Revert "ci: build on xcbproto/libxcb master"

This reverts commit 026815ebac5f3117def7156f375cdbe31c657585.

hw/xnest/Args.c

@@ -28,29 +28,25 @@ is" without express or implied warranty.
 #include "scrnintstr.h"
 #include "servermd.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Args.h"
 
 char *xnestDisplayName = NULL;
-Bool xnestSynchronize = False;
-Bool xnestFullGeneration = False;
+Bool xnestFullGeneration = FALSE;
 int xnestDefaultClass;
-Bool xnestUserDefaultClass = False;
+Bool xnestUserDefaultClass = FALSE;
 int xnestDefaultDepth;
-Bool xnestUserDefaultDepth = False;
-Bool xnestSoftwareScreenSaver = False;
-int xnestX;
-int xnestY;
-unsigned int xnestWidth;
-unsigned int xnestHeight;
+Bool xnestUserDefaultDepth = FALSE;
+Bool xnestSoftwareScreenSaver = FALSE;
+xRectangle xnestGeometry = { 0 };
 int xnestUserGeometry = 0;
 int xnestBorderWidth;
-Bool xnestUserBorderWidth = False;
+Bool xnestUserBorderWidth = FALSE;
 char *xnestWindowName = NULL;
 int xnestNumScreens = 0;
-Bool xnestDoDirectColormaps = False;
+Bool xnestDoDirectColormaps = FALSE;
 Window xnestParentWindow = 0;
 
 int
@@ -63,44 +59,40 @@ ddxProcessArgument(int argc, char *argv[], int i)
         }
         return 0;
     }
-    if (!strcmp(argv[i], "-sync")) {
-        xnestSynchronize = True;
-        return 1;
-    }
     if (!strcmp(argv[i], "-full")) {
-        xnestFullGeneration = True;
+        xnestFullGeneration = TRUE;
         return 1;
     }
     if (!strcmp(argv[i], "-class")) {
         if (++i < argc) {
             if (!strcmp(argv[i], "StaticGray")) {
                 xnestDefaultClass = StaticGray;
-                xnestUserDefaultClass = True;
+                xnestUserDefaultClass = TRUE;
                 return 2;
             }
             else if (!strcmp(argv[i], "GrayScale")) {
                 xnestDefaultClass = GrayScale;
-                xnestUserDefaultClass = True;
+                xnestUserDefaultClass = TRUE;
                 return 2;
             }
             else if (!strcmp(argv[i], "StaticColor")) {
                 xnestDefaultClass = StaticColor;
-                xnestUserDefaultClass = True;
+                xnestUserDefaultClass = TRUE;
                 return 2;
             }
             else if (!strcmp(argv[i], "PseudoColor")) {
                 xnestDefaultClass = PseudoColor;
-                xnestUserDefaultClass = True;
+                xnestUserDefaultClass = TRUE;
                 return 2;
             }
             else if (!strcmp(argv[i], "TrueColor")) {
                 xnestDefaultClass = TrueColor;
-                xnestUserDefaultClass = True;
+                xnestUserDefaultClass = TRUE;
                 return 2;
             }
             else if (!strcmp(argv[i], "DirectColor")) {
                 xnestDefaultClass = DirectColor;
-                xnestUserDefaultClass = True;
+                xnestUserDefaultClass = TRUE;
                 return 2;
             }
         }
@@ -109,7 +101,7 @@ ddxProcessArgument(int argc, char *argv[], int i)
     if (!strcmp(argv[i], "-cc")) {
         if (++i < argc && sscanf(argv[i], "%i", &xnestDefaultClass) == 1) {
             if (xnestDefaultClass >= 0 && xnestDefaultClass <= 5) {
-                xnestUserDefaultClass = True;
+                xnestUserDefaultClass = TRUE;
                 /* lex the OS layer process it as well, so return 0 */
             }
         }
@@ -118,22 +110,19 @@ ddxProcessArgument(int argc, char *argv[], int i)
     if (!strcmp(argv[i], "-depth")) {
         if (++i < argc && sscanf(argv[i], "%i", &xnestDefaultDepth) == 1) {
             if (xnestDefaultDepth > 0) {
-                xnestUserDefaultDepth = True;
+                xnestUserDefaultDepth = TRUE;
                 return 2;
             }
         }
         return 0;
     }
     if (!strcmp(argv[i], "-sss")) {
-        xnestSoftwareScreenSaver = True;
+        xnestSoftwareScreenSaver = TRUE;
         return 1;
     }
     if (!strcmp(argv[i], "-geometry")) {
         if (++i < argc) {
-            xnestUserGeometry = XParseGeometry(argv[i],
-                                               &xnestX, &xnestY,
-                                               &xnestWidth, &xnestHeight);
-            if (xnestUserGeometry)
+            if (xnestParseGeometry(argv[i], &xnestGeometry))
                 return 2;
         }
         return 0;
@@ -141,7 +130,7 @@ ddxProcessArgument(int argc, char *argv[], int i)
     if (!strcmp(argv[i], "-bw")) {
         if (++i < argc && sscanf(argv[i], "%i", &xnestBorderWidth) == 1) {
             if (xnestBorderWidth >= 0) {
-                xnestUserBorderWidth = True;
+                xnestUserBorderWidth = TRUE;
                 return 2;
             }
         }
@@ -167,7 +156,7 @@ ddxProcessArgument(int argc, char *argv[], int i)
         return 0;
     }
     if (!strcmp(argv[i], "-install")) {
-        xnestDoDirectColormaps = True;
+        xnestDoDirectColormaps = TRUE;
         return 1;
     }
     if (!strcmp(argv[i], "-parent")) {
@@ -183,7 +172,6 @@ void
 ddxUseMsg(void)
 {
     ErrorF("-display string        display name of the real server\n");
-    ErrorF("-sync                  sinchronize with the real server\n");
     ErrorF("-full                  utilize full regeneration\n");
     ErrorF("-class string          default visual class\n");
     ErrorF("-depth int             default depth\n");

hw/xnest/Args.h

@@ -19,17 +19,13 @@ is" without express or implied warranty.
 #include <X11/Xdefs.h>
 
 extern char *xnestDisplayName;
-extern Bool xnestSynchronize;
 extern Bool xnestFullGeneration;
 extern int xnestDefaultClass;
 extern Bool xnestUserDefaultClass;
 extern int xnestDefaultDepth;
 extern Bool xnestUserDefaultDepth;
 extern Bool xnestSoftwareScreenSaver;
-extern int xnestX;
-extern int xnestY;
-extern unsigned int xnestWidth;
-extern unsigned int xnestHeight;
+extern xRectangle xnestGeometry;
 extern int xnestUserGeometry;
 extern int xnestBorderWidth;
 extern Bool xnestUserBorderWidth;

hw/xnest/Color.c

@@ -26,15 +26,16 @@ is" without express or implied warranty.
 #include "colormapst.h"
 #include "resource.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Screen.h"
 #include "Color.h"
-#include "Visual.h"
 #include "XNWindow.h"
 #include "Args.h"
 
+#include <xcb/xcb_icccm.h>
+
 DevPrivateKeyRec xnestColormapPrivateKeyRec;
 
 static DevPrivateKeyRec cmapScrPrivateKeyRec;
@@ -44,59 +45,79 @@ static DevPrivateKeyRec cmapScrPrivateKeyRec;
 #define GetInstalledColormap(s) ((ColormapPtr) dixLookupPrivate(&(s)->devPrivates, cmapScrPrivateKey))
 #define SetInstalledColormap(s,c) (dixSetPrivate(&(s)->devPrivates, cmapScrPrivateKey, c))
 
+static Bool loadColormap(ColormapPtr pCmap, int ncolors, uint32_t *colors)
+{
+    xcb_generic_error_t *err = NULL;
+    xcb_query_colors_reply_t *reply = xcb_query_colors_reply(
+        xnestUpstreamInfo.conn,
+        xcb_query_colors(
+            xnestUpstreamInfo.conn,
+            xnestColormap(pCmap),
+            ncolors,
+            colors),
+        &err);
+
+    if (!reply) {
+        LogMessage(X_WARNING, "loadColormap: missing reply for QueryColors request\n");
+        free(colors);
+        return FALSE;
+    }
+
+    if (xcb_query_colors_colors_length(reply) != ncolors) {
+        LogMessage(X_WARNING, "loadColormap: received wrong number of entries: %d - expected %d\n",
+            xcb_query_colors_colors_length(reply), ncolors);
+        free(reply);
+        free(colors);
+        return FALSE;
+    }
+
+    xcb_rgb_t *rgb = xcb_query_colors_colors(reply);
+    for (int i = 0; i < ncolors; i++) {
+        pCmap->red[i].co.local.red = rgb[i].red;
+        pCmap->green[i].co.local.green = rgb[i].green;
+        pCmap->blue[i].co.local.blue = rgb[i].blue;
+    }
+
+    free(colors);
+    free(reply);
+    return TRUE;
+}
+
 Bool
 xnestCreateColormap(ColormapPtr pCmap)
 {
-    VisualPtr pVisual;
-    XColor *colors;
-    int i, ncolors;
-    Pixel red, green, blue;
-    Pixel redInc, greenInc, blueInc;
+    VisualPtr pVisual = pCmap->pVisual;
+    int ncolors = pVisual->ColormapEntries;
 
-    pVisual = pCmap->pVisual;
-    ncolors = pVisual->ColormapEntries;
+    uint32_t const cmap = xcb_generate_id(xnestUpstreamInfo.conn);
+    xnestColormapPriv(pCmap)->colormap = cmap;
 
-    xnestColormapPriv(pCmap)->colormap =
-        XCreateColormap(xnestDisplay,
+    xcb_create_colormap(xnestUpstreamInfo.conn,
+                        (pVisual->class & DynamicClass) ? XCB_COLORMAP_ALLOC_ALL : XCB_COLORMAP_ALLOC_NONE,
+                        cmap,
                         xnestDefaultWindows[pCmap->pScreen->myNum],
-                        xnestVisual(pVisual),
-                        (pVisual->class & DynamicClass) ? AllocAll : AllocNone);
+                        xnest_visual_map_to_host(pVisual->vid));
 
     switch (pVisual->class) {
     case StaticGray:           /* read only */
-        colors = xallocarray(ncolors, sizeof(XColor));
-        for (i = 0; i < ncolors; i++)
-            colors[i].pixel = i;
-        XQueryColors(xnestDisplay, xnestColormap(pCmap), colors, ncolors);
-        for (i = 0; i < ncolors; i++) {
-            pCmap->red[i].co.local.red = colors[i].red;
-            pCmap->red[i].co.local.green = colors[i].red;
-            pCmap->red[i].co.local.blue = colors[i].red;
-        }
-        free(colors);
-        break;
-
     case StaticColor:          /* read only */
-        colors = xallocarray(ncolors, sizeof(XColor));
-        for (i = 0; i < ncolors; i++)
-            colors[i].pixel = i;
-        XQueryColors(xnestDisplay, xnestColormap(pCmap), colors, ncolors);
-        for (i = 0; i < ncolors; i++) {
-            pCmap->red[i].co.local.red = colors[i].red;
-            pCmap->red[i].co.local.green = colors[i].green;
-            pCmap->red[i].co.local.blue = colors[i].blue;
+    {
+        uint32_t *colors = malloc(ncolors * sizeof(uint32_t));
+        for (int i = 0; i < ncolors; i++)
+            colors[i] = i;
+        return loadColormap(pCmap, ncolors, colors);
     }
-        free(colors);
     break;
 
     case TrueColor:            /* read only */
-        colors = xallocarray(ncolors, sizeof(XColor));
-        red = green = blue = 0L;
-        redInc = lowbit(pVisual->redMask);
-        greenInc = lowbit(pVisual->greenMask);
-        blueInc = lowbit(pVisual->blueMask);
-        for (i = 0; i < ncolors; i++) {
-            colors[i].pixel = red | green | blue;
+    {
+        uint32_t *colors = malloc(ncolors * sizeof(uint32_t));
+        Pixel red = 0, redInc = lowbit(pVisual->redMask);
+        Pixel green = 0, greenInc = lowbit(pVisual->greenMask);
+        Pixel blue = 0, blueInc = lowbit(pVisual->blueMask);
+
+        for (int i = 0; i < ncolors; i++) {
+            colors[i] = red | green | blue;
             red += redInc;
             if (red > pVisual->redMask)
                 red = 0L;
@@ -107,13 +128,8 @@ xnestCreateColormap(ColormapPtr pCmap)
             if (blue > pVisual->blueMask)
                 blue = 0L;
         }
-        XQueryColors(xnestDisplay, xnestColormap(pCmap), colors, ncolors);
-        for (i = 0; i < ncolors; i++) {
-            pCmap->red[i].co.local.red = colors[i].red;
-            pCmap->green[i].co.local.green = colors[i].green;
-            pCmap->blue[i].co.local.blue = colors[i].blue;
+        return loadColormap(pCmap, ncolors, colors);
     }
-        free(colors);
     break;
 
     case GrayScale:            /* read and write */
@@ -126,17 +142,17 @@ xnestCreateColormap(ColormapPtr pCmap)
         break;
     }
 
-    return True;
+    return TRUE;
 }
 
 void
 xnestDestroyColormap(ColormapPtr pCmap)
 {
-    XFreeColormap(xnestDisplay, xnestColormap(pCmap));
+    xcb_free_colormap(xnestUpstreamInfo.conn, xnestColormap(pCmap));
 }
 
 #define SEARCH_PREDICATE \
-  (xnestWindow(pWin) != None && wColormap(pWin) == icws->cmapIDs[i])
+  (xnestWindow(pWin) != XCB_WINDOW_NONE && wColormap(pWin) == icws->cmapIDs[i])
 
 static int
 xnestCountInstalledColormapWindows(WindowPtr pWin, void *ptr)
@@ -175,19 +191,19 @@ static Bool
 xnestSameInstalledColormapWindows(Window *windows, int numWindows)
 {
     if (xnestNumOldInstalledColormapWindows != numWindows)
-        return False;
+        return FALSE;
 
     if (xnestOldInstalledColormapWindows == windows)
-        return True;
+        return TRUE;
 
     if (xnestOldInstalledColormapWindows == NULL || windows == NULL)
-        return False;
+        return FALSE;
 
     if (memcmp(xnestOldInstalledColormapWindows, windows,
                numWindows * sizeof(Window)))
-        return False;
+        return FALSE;
 
-    return True;
+    return TRUE;
 }
 
 void
@@ -217,22 +233,10 @@ xnestSetInstalledColormapWindows(ScreenPtr pScreen)
     if (!xnestSameInstalledColormapWindows(icws.windows, icws.numWindows)) {
         free(xnestOldInstalledColormapWindows);
 
-#ifdef _XSERVER64
-        {
-            int i;
-            Window64 *windows = xallocarray(numWindows, sizeof(Window64));
-
-            for (i = 0; i < numWindows; ++i)
-                windows[i] = icws.windows[i];
-            XSetWMColormapWindows(xnestDisplay,
-                                  xnestDefaultWindows[pScreen->myNum], windows,
+        xnestWMColormapWindows(xnestUpstreamInfo.conn,
+                               xnestDefaultWindows[pScreen->myNum],
+                               icws.windows,
                                numWindows);
-            free(windows);
-        }
-#else
-        XSetWMColormapWindows(xnestDisplay, xnestDefaultWindows[pScreen->myNum],
-                              icws.windows, numWindows);
-#endif
 
         xnestOldInstalledColormapWindows = icws.windows;
         xnestNumOldInstalledColormapWindows = icws.numWindows;
@@ -244,13 +248,12 @@ xnestSetInstalledColormapWindows(ScreenPtr pScreen)
          */
         if (icws.numWindows) {
             WindowPtr pWin;
-            Visual *visual;
             ColormapPtr pCmap;
 
             pWin = xnestWindowPtr(icws.windows[0]);
-            visual = xnestVisualFromID(pScreen, wVisual(pWin));
 
-            if (visual == xnestDefaultVisual(pScreen))
+            if (xnest_visual_map_to_host(wVisual(pWin)) ==
+                xnest_visual_map_to_host(pScreen->rootVisual))
                 dixLookupResourceByType((void **) &pCmap, wColormap(pWin),
                                         X11_RESTYPE_COLORMAP, serverClient,
                                         DixUseAccess);
@@ -259,9 +262,11 @@ xnestSetInstalledColormapWindows(ScreenPtr pScreen)
                                         pScreen->defColormap, X11_RESTYPE_COLORMAP,
                                         serverClient, DixUseAccess);
 
-            XSetWindowColormap(xnestDisplay,
+            uint32_t cmap = xnestColormap(pCmap);
+            xcb_change_window_attributes(xnestUpstreamInfo.conn,
                                          xnestDefaultWindows[pScreen->myNum],
-                               xnestColormap(pCmap));
+                                         XCB_CW_COLORMAP,
+                                         &cmap);
         }
 #endif                          /* DUMB_WINDOW_MANAGERS */
     }
@@ -274,19 +279,10 @@ xnestSetScreenSaverColormapWindow(ScreenPtr pScreen)
 {
     free(xnestOldInstalledColormapWindows);
 
-#ifdef _XSERVER64
-    {
-        Window64 window;
-
-        window = xnestScreenSaverWindows[pScreen->myNum];
-        XSetWMColormapWindows(xnestDisplay, xnestDefaultWindows[pScreen->myNum],
-                              &window, 1);
-        xnestScreenSaverWindows[pScreen->myNum] = window;
-    }
-#else
-    XSetWMColormapWindows(xnestDisplay, xnestDefaultWindows[pScreen->myNum],
-                          &xnestScreenSaverWindows[pScreen->myNum], 1);
-#endif                          /* _XSERVER64 */
+    xnestWMColormapWindows(xnestUpstreamInfo.conn,
+                           xnestDefaultWindows[pScreen->myNum],
+                           &xnestScreenSaverWindows[pScreen->myNum],
+                           1);
 
     xnestOldInstalledColormapWindows = NULL;
     xnestNumOldInstalledColormapWindows = 0;
@@ -311,7 +307,7 @@ xnestDirectInstallColormaps(ScreenPtr pScreen)
         dixLookupResourceByType((void **) &pCmap, pCmapIDs[i], X11_RESTYPE_COLORMAP,
                                 serverClient, DixInstallAccess);
         if (pCmap)
-            XInstallColormap(xnestDisplay, xnestColormap(pCmap));
+            xcb_install_colormap(xnestUpstreamInfo.conn, xnestColormap(pCmap));
     }
 }
 
@@ -332,7 +328,7 @@ xnestDirectUninstallColormaps(ScreenPtr pScreen)
         dixLookupResourceByType((void **) &pCmap, pCmapIDs[i], X11_RESTYPE_COLORMAP,
                                 serverClient, DixUninstallAccess);
         if (pCmap)
-            XUninstallColormap(xnestDisplay, xnestColormap(pCmap));
+            xcb_uninstall_colormap(xnestUpstreamInfo.conn, xnestColormap(pCmap));
     }
 }
 
@@ -345,7 +341,7 @@ xnestInstallColormap(ColormapPtr pCmap)
         xnestDirectUninstallColormaps(pCmap->pScreen);
 
         /* Uninstall pInstalledMap. Notify all interested parties. */
-        if (pOldCmap != (ColormapPtr) None)
+        if (pOldCmap != (ColormapPtr) XCB_COLORMAP_NONE)
             WalkTree(pCmap->pScreen, TellLostMap, (void *) &pOldCmap->mid);
 
         SetInstalledColormap(pCmap->pScreen, pCmap);
@@ -372,7 +368,7 @@ xnestUninstallColormap(ColormapPtr pCmap)
     }
 }
 
-static Bool xnestInstalledDefaultColormap = False;
+static Bool xnestInstalledDefaultColormap = FALSE;
 
 int
 xnestListInstalledColormaps(ScreenPtr pScreen, Colormap * pCmapIDs)
@@ -389,25 +385,10 @@ void
 xnestStoreColors(ColormapPtr pCmap, int nColors, xColorItem * pColors)
 {
     if (pCmap->pVisual->class & DynamicClass)
-#ifdef _XSERVER64
-    {
-        int i;
-        XColor *pColors64 = xallocarray(nColors, sizeof(XColor));
-
-        for (i = 0; i < nColors; ++i) {
-            pColors64[i].pixel = pColors[i].pixel;
-            pColors64[i].red = pColors[i].red;
-            pColors64[i].green = pColors[i].green;
-            pColors64[i].blue = pColors[i].blue;
-            pColors64[i].flags = pColors[i].flags;
-        }
-        XStoreColors(xnestDisplay, xnestColormap(pCmap), pColors64, nColors);
-        free(pColors64);
-    }
-#else
-        XStoreColors(xnestDisplay, xnestColormap(pCmap),
-                     (XColor *) pColors, nColors);
-#endif
+        xcb_store_colors(xnestUpstreamInfo.conn,
+                         xnestColormap(pCmap),
+                         nColors,
+                         (xcb_coloritem_t*) pColors);
 }
 
 void
@@ -474,7 +455,7 @@ xnestCreateDefaultColormap(ScreenPtr pScreen)
                        (pVisual->class & DynamicClass) ? AllocNone : AllocAll,
                        0)
         != Success)
-        return False;
+        return FALSE;
 
     wp = pScreen->whitePixel;
     bp = pScreen->blackPixel;
@@ -486,7 +467,7 @@ xnestCreateDefaultColormap(ScreenPtr pScreen)
     pScreen->blackPixel = bp;
     (*pScreen->InstallColormap) (pCmap);
 
-    xnestInstalledDefaultColormap = True;
+    xnestInstalledDefaultColormap = TRUE;
 
-    return True;
+    return TRUE;
 }

hw/xnest/Cursor.c

@@ -28,12 +28,11 @@ is" without express or implied warranty.
 #include "servermd.h"
 #include "mipointrst.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Screen.h"
 #include "XNCursor.h"
-#include "Visual.h"
 #include "Keyboard.h"
 #include "Args.h"
 
@@ -42,97 +41,87 @@ xnestCursorFuncRec xnestCursorFuncs = { NULL };
 Bool
 xnestRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
 {
-    XImage *ximage;
-    Pixmap source, mask;
-    XColor fg_color, bg_color;
-    unsigned long valuemask;
-    XGCValues values;
+    uint32_t valuemask = XCB_GC_FUNCTION | XCB_GC_PLANE_MASK | XCB_GC_FOREGROUND
+                         | XCB_GC_BACKGROUND | XCB_GC_CLIP_MASK;
 
-    valuemask = GCFunction |
-        GCPlaneMask | GCForeground | GCBackground | GCClipMask;
+    XnGCValues values = {
+        .function   = XCB_GX_COPY,
+        .plane_mask = ((unsigned long)~0L),
+        .foreground = 1L,
+    };
 
-    values.function = GXcopy;
-    values.plane_mask = AllPlanes;
-    values.foreground = 1L;
-    values.background = 0L;
-    values.clip_mask = None;
+    xnChangeGC(xnestUpstreamInfo.conn, xnestBitmapGC, values, valuemask);
 
-    XChangeGC(xnestDisplay, xnestBitmapGC, valuemask, &values);
+    uint32_t const winId = xnestDefaultWindows[pScreen->myNum];
 
-    source = XCreatePixmap(xnestDisplay,
-                           xnestDefaultWindows[pScreen->myNum],
-                           pCursor->bits->width, pCursor->bits->height, 1);
+    Pixmap const source = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_create_pixmap(xnestUpstreamInfo.conn, 1, source, winId, pCursor->bits->width, pCursor->bits->height);
 
-    mask = XCreatePixmap(xnestDisplay,
-                         xnestDefaultWindows[pScreen->myNum],
-                         pCursor->bits->width, pCursor->bits->height, 1);
+    Pixmap const mask = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_create_pixmap(xnestUpstreamInfo.conn, 1, mask, winId, pCursor->bits->width, pCursor->bits->height);
 
-    ximage = XCreateImage(xnestDisplay,
-                          xnestDefaultVisual(pScreen),
-                          1, XYBitmap, 0,
-                          (char *) pCursor->bits->source,
+    int const pixmap_len = BitmapBytePad(pCursor->bits->width) * pCursor->bits->height;
+
+    xcb_put_image(xnestUpstreamInfo.conn,
+                  XCB_IMAGE_FORMAT_XY_BITMAP,
+                  source,
+                  xnestBitmapGC,
                   pCursor->bits->width,
-                          pCursor->bits->height, BitmapPad(xnestDisplay), 0);
+                  pCursor->bits->height,
+                  0, // x
+                  0, // y
+                  0, // left_pad
+                  1, // depth
+                  pixmap_len,
+                  (uint8_t*) pCursor->bits->source);
 
-    XPutImage(xnestDisplay, source, xnestBitmapGC, ximage,
-              0, 0, 0, 0, pCursor->bits->width, pCursor->bits->height);
-
-    XFree(ximage);
-
-    ximage = XCreateImage(xnestDisplay,
-                          xnestDefaultVisual(pScreen),
-                          1, XYBitmap, 0,
-                          (char *) pCursor->bits->mask,
+    xcb_put_image(xnestUpstreamInfo.conn,
+                  XCB_IMAGE_FORMAT_XY_BITMAP,
+                  mask,
+                  xnestBitmapGC,
                   pCursor->bits->width,
-                          pCursor->bits->height, BitmapPad(xnestDisplay), 0);
-
-    XPutImage(xnestDisplay, mask, xnestBitmapGC, ximage,
-              0, 0, 0, 0, pCursor->bits->width, pCursor->bits->height);
-
-    XFree(ximage);
-
-    fg_color.red = pCursor->foreRed;
-    fg_color.green = pCursor->foreGreen;
-    fg_color.blue = pCursor->foreBlue;
-
-    bg_color.red = pCursor->backRed;
-    bg_color.green = pCursor->backGreen;
-    bg_color.blue = pCursor->backBlue;
+                  pCursor->bits->height,
+                  0, // x
+                  0, // y
+                  0, // left_pad
+                  1, // depth
+                  pixmap_len,
+                  (uint8_t*) pCursor->bits->mask);
 
     xnestSetCursorPriv(pCursor, pScreen, calloc(1, sizeof(xnestPrivCursor)));
-    xnestCursor(pCursor, pScreen) =
-        XCreatePixmapCursor(xnestDisplay, source, mask, &fg_color, &bg_color,
+    uint32_t cursor = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_create_cursor(xnestUpstreamInfo.conn, cursor, source, mask,
+                      pCursor->foreRed, pCursor->foreGreen, pCursor->foreBlue,
+                      pCursor->backRed, pCursor->backGreen, pCursor->backBlue,
                       pCursor->bits->xhot, pCursor->bits->yhot);
 
-    XFreePixmap(xnestDisplay, source);
-    XFreePixmap(xnestDisplay, mask);
+    xnestCursor(pCursor, pScreen) = cursor;
 
-    return True;
+    xcb_free_pixmap(xnestUpstreamInfo.conn, source);
+    xcb_free_pixmap(xnestUpstreamInfo.conn, mask);
+
+    return TRUE;
 }
 
 Bool
 xnestUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
 {
-    XFreeCursor(xnestDisplay, xnestCursor(pCursor, pScreen));
+    xcb_free_cursor(xnestUpstreamInfo.conn, xnestCursor(pCursor, pScreen));
     free(xnestGetCursorPriv(pCursor, pScreen));
-    return True;
+    return TRUE;
 }
 
 void
 xnestRecolorCursor(ScreenPtr pScreen, CursorPtr pCursor, Bool displayed)
 {
-    XColor fg_color, bg_color;
-
-    fg_color.red = pCursor->foreRed;
-    fg_color.green = pCursor->foreGreen;
-    fg_color.blue = pCursor->foreBlue;
-
-    bg_color.red = pCursor->backRed;
-    bg_color.green = pCursor->backGreen;
-    bg_color.blue = pCursor->backBlue;
-
-    XRecolorCursor(xnestDisplay,
-                   xnestCursor(pCursor, pScreen), &fg_color, &bg_color);
+    xcb_recolor_cursor(xnestUpstreamInfo.conn,
+                       xnestCursor(pCursor, pScreen),
+                       pCursor->foreRed,
+                       pCursor->foreGreen,
+                       pCursor->foreBlue,
+                       pCursor->backRed,
+                       pCursor->backGreen,
+                       pCursor->backBlue);
 }
 
 void
@@ -140,9 +129,12 @@ xnestSetCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor, int x,
                int y)
 {
     if (pCursor) {
-        XDefineCursor(xnestDisplay,
+        uint32_t cursor = xnestCursor(pCursor, pScreen);
+
+        xcb_change_window_attributes(xnestUpstreamInfo.conn,
                                      xnestDefaultWindows[pScreen->myNum],
-                      xnestCursor(pCursor, pScreen));
+                                     XCB_CW_CURSOR,
+                                     &cursor);
     }
 }
 

hw/xnest/Display.c

@@ -30,7 +30,7 @@ is" without express or implied warranty.
 #include "scrnintstr.h"
 #include "servermd.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Init.h"
@@ -39,173 +39,111 @@ is" without express or implied warranty.
 #include "icon"
 #include "screensaver"
 
-Display *xnestDisplay = NULL;
-XVisualInfo *xnestVisuals;
-int xnestNumVisuals;
-int xnestDefaultVisualIndex;
 Colormap *xnestDefaultColormaps;
-static uint16_t xnestNumDefaultColormaps;
-int *xnestDepths;
-int xnestNumDepths;
-XPixmapFormatValues *xnestPixmapFormats;
 int xnestNumPixmapFormats;
-Pixel xnestBlackPixel;
-Pixel xnestWhitePixel;
 Drawable xnestDefaultDrawables[MAXDEPTH + 1];
 Pixmap xnestIconBitmap;
 Pixmap xnestScreenSaverPixmap;
-XlibGC xnestBitmapGC;
-unsigned long xnestEventMask;
-
-static int _X_NORETURN
-x_io_error_handler(Display * dpy)
-{
-    ErrorF("Lost connection to X server: %s\n", strerror(errno));
-    CloseWellKnownConnections();
-    OsCleanup(1);
-    exit(1);
-}
+uint32_t xnestBitmapGC;
+uint32_t xnestEventMask;
 
 void
 xnestOpenDisplay(int argc, char *argv[])
 {
-    XVisualInfo vi;
-    long mask;
-    int i, j;
+    int i;
 
     if (!xnestDoFullGeneration)
         return;
 
-    XSetIOErrorHandler(x_io_error_handler);
-
     xnestCloseDisplay();
 
-    xnestDisplay = XOpenDisplay(xnestDisplayName);
-    if (xnestDisplay == NULL)
-        FatalError("Unable to open display \"%s\".\n",
-                   XDisplayName(xnestDisplayName));
-
-    if (xnestSynchronize)
-        XSynchronize(xnestDisplay, True);
-
-    mask = VisualScreenMask;
-    vi.screen = DefaultScreen(xnestDisplay);
-    xnestVisuals = XGetVisualInfo(xnestDisplay, mask, &vi, &xnestNumVisuals);
-    if (xnestNumVisuals == 0 || xnestVisuals == NULL)
-        FatalError("Unable to find any visuals.\n");
-
-    if (xnestUserDefaultClass || xnestUserDefaultDepth) {
-        xnestDefaultVisualIndex = UNDEFINED;
-        for (i = 0; i < xnestNumVisuals; i++)
-            if ((!xnestUserDefaultClass ||
-                 xnestVisuals[i].class == xnestDefaultClass)
-                &&
-                (!xnestUserDefaultDepth ||
-                 xnestVisuals[i].depth == xnestDefaultDepth)) {
-                xnestDefaultVisualIndex = i;
-                break;
-            }
-        if (xnestDefaultVisualIndex == UNDEFINED)
-            FatalError("Unable to find desired default visual.\n");
-    }
-    else {
-        vi.visualid = XVisualIDFromVisual(DefaultVisual(xnestDisplay,
-                                                        DefaultScreen
-                                                        (xnestDisplay)));
-        xnestDefaultVisualIndex = 0;
-        for (i = 0; i < xnestNumVisuals; i++)
-            if (vi.visualid == xnestVisuals[i].visualid)
-                xnestDefaultVisualIndex = i;
-    }
-
-    xnestNumDefaultColormaps = xnestNumVisuals;
-    xnestDefaultColormaps = xallocarray(xnestNumDefaultColormaps,
-                                        sizeof(Colormap));
-    for (i = 0; i < xnestNumDefaultColormaps; i++)
-        xnestDefaultColormaps[i] = XCreateColormap(xnestDisplay,
-                                                   DefaultRootWindow
-                                                   (xnestDisplay),
-                                                   xnestVisuals[i].visual,
-                                                   AllocNone);
-
-    xnestDepths = XListDepths(xnestDisplay, DefaultScreen(xnestDisplay),
-                              &xnestNumDepths);
-
-    xnestPixmapFormats = XListPixmapFormats(xnestDisplay,
-                                            &xnestNumPixmapFormats);
-
-    xnestBlackPixel = BlackPixel(xnestDisplay, DefaultScreen(xnestDisplay));
-    xnestWhitePixel = WhitePixel(xnestDisplay, DefaultScreen(xnestDisplay));
+    if (!xnest_upstream_setup(xnestDisplayName))
+        FatalError("Unable to open display \"%s\".\n", xnestDisplayName);
 
     if (xnestParentWindow != (Window) 0)
-        xnestEventMask = StructureNotifyMask;
+        xnestEventMask = XCB_EVENT_MASK_STRUCTURE_NOTIFY;
     else
         xnestEventMask = 0L;
 
     for (i = 0; i <= MAXDEPTH; i++)
-        xnestDefaultDrawables[i] = None;
+        xnestDefaultDrawables[i] = XCB_WINDOW_NONE;
 
-    for (i = 0; i < xnestNumPixmapFormats; i++)
-        for (j = 0; j < xnestNumDepths; j++)
-            if (xnestPixmapFormats[i].depth == 1 ||
-                xnestPixmapFormats[i].depth == xnestDepths[j]) {
-                xnestDefaultDrawables[xnestPixmapFormats[i].depth] =
-                    XCreatePixmap(xnestDisplay, DefaultRootWindow(xnestDisplay),
-                                  1, 1, xnestPixmapFormats[i].depth);
+    xcb_format_t *fmt = xcb_setup_pixmap_formats(xnestUpstreamInfo.setup);
+    const xcb_format_t *fmtend = fmt + xcb_setup_pixmap_formats_length(xnestUpstreamInfo.setup);
+    for(; fmt != fmtend; ++fmt) {
+        xcb_depth_iterator_t depth_iter;
+        for (depth_iter = xcb_screen_allowed_depths_iterator(xnestUpstreamInfo.screenInfo);
+             depth_iter.rem;
+             xcb_depth_next(&depth_iter))
+        {
+            if (fmt->depth == 1 || fmt->depth == depth_iter.data->depth) {
+                uint32_t pixmap = xcb_generate_id(xnestUpstreamInfo.conn);
+                xcb_create_pixmap(xnestUpstreamInfo.conn,
+                                  fmt->depth,
+                                  pixmap,
+                                  xnestUpstreamInfo.screenInfo->root,
+                                  1, 1);
+                xnestDefaultDrawables[fmt->depth] = pixmap;
+            }
+        }
     }
 
-    xnestBitmapGC = XCreateGC(xnestDisplay, xnestDefaultDrawables[1], 0L, NULL);
+    xnestBitmapGC = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_create_gc(xnestUpstreamInfo.conn,
+                  xnestBitmapGC,
+                  xnestDefaultDrawables[1],
+                  0,
+                  NULL);
 
-    if (!(xnestUserGeometry & XValue))
-        xnestX = 0;
+    if (!(xnestUserGeometry & XCB_CONFIG_WINDOW_X))
+        xnestGeometry.x = 0;
 
-    if (!(xnestUserGeometry & YValue))
-        xnestY = 0;
+    if (!(xnestUserGeometry & XCB_CONFIG_WINDOW_Y))
+        xnestGeometry.y = 0;
 
     if (xnestParentWindow == 0) {
-        if (!(xnestUserGeometry & WidthValue))
-            xnestWidth = 3 * DisplayWidth(xnestDisplay,
-                                          DefaultScreen(xnestDisplay)) / 4;
+        if (!(xnestUserGeometry & XCB_CONFIG_WINDOW_WIDTH))
+            xnestGeometry.width = 3 * xnestUpstreamInfo.screenInfo->width_in_pixels / 4;
 
-        if (!(xnestUserGeometry & HeightValue))
-            xnestHeight = 3 * DisplayHeight(xnestDisplay,
-                                            DefaultScreen(xnestDisplay)) / 4;
+        if (!(xnestUserGeometry & XCB_CONFIG_WINDOW_HEIGHT))
+            xnestGeometry.height = 3 * xnestUpstreamInfo.screenInfo->height_in_pixels / 4;
     }
 
     if (!xnestUserBorderWidth)
         xnestBorderWidth = 1;
 
     xnestIconBitmap =
-        XCreateBitmapFromData(xnestDisplay,
-                              DefaultRootWindow(xnestDisplay),
+        xnestCreateBitmapFromData(xnestUpstreamInfo.conn,
+                                  xnestUpstreamInfo.screenInfo->root,
                               (char *) icon_bits, icon_width, icon_height);
 
     xnestScreenSaverPixmap =
-        XCreatePixmapFromBitmapData(xnestDisplay,
-                                    DefaultRootWindow(xnestDisplay),
+        xnestCreatePixmapFromBitmapData(xnestUpstreamInfo.conn,
+                                        xnestUpstreamInfo.screenInfo->root,
                                     (char *) screensaver_bits,
                                     screensaver_width,
                                     screensaver_height,
-                                    xnestWhitePixel,
-                                    xnestBlackPixel,
-                                    DefaultDepth(xnestDisplay,
-                                                 DefaultScreen(xnestDisplay)));
+                                    xnestUpstreamInfo.screenInfo->white_pixel,
+                                    xnestUpstreamInfo.screenInfo->black_pixel,
+                                    xnestUpstreamInfo.screenInfo->root_depth);
 }
 
 void
 xnestCloseDisplay(void)
 {
-    if (!xnestDoFullGeneration || !xnestDisplay)
+    if (!xnestDoFullGeneration || !xnestUpstreamInfo.conn)
         return;
 
     /*
        If xnestDoFullGeneration all x resources will be destroyed upon closing
        the display connection.  There is no need to generate extra protocol.
      */
+    free(xnestVisualMap);
+    xnestVisualMap = NULL;
+    xnestNumVisualMap = 0;
 
-    free(xnestDefaultColormaps);
-    XFree(xnestVisuals);
-    XFree(xnestDepths);
-    XFree(xnestPixmapFormats);
-    XCloseDisplay(xnestDisplay);
+    xcb_disconnect(xnestUpstreamInfo.conn);
+    xnestUpstreamInfo.conn = NULL;
+    xnestUpstreamInfo.screenInfo = NULL;
+    xnestUpstreamInfo.setup = NULL;
 }

hw/xnest/Display.h

@@ -15,28 +15,19 @@ is" without express or implied warranty.
 #ifndef XNESTCOMMON_H
 #define XNESTCOMMON_H
 
+#include "colormap.h"
+
 #define UNDEFINED -1
 
 #define MAXDEPTH 32
 #define MAXVISUALSPERDEPTH 256
 
-extern Display *xnestDisplay;
-extern XVisualInfo *xnestVisuals;
-extern int xnestNumVisuals;
-extern int xnestDefaultVisualIndex;
-extern Colormap *xnestDefaultColormaps;
-extern int xnestNumDefaultClormaps;
-extern int *xnestDepths;
-extern int xnestNumDepths;
-extern XPixmapFormatValues *xnestPixmapFormats;
 extern int xnestNumPixmapFormats;
-extern Pixel xnestBlackPixel;
-extern Pixel xnestWhitePixel;
 extern Drawable xnestDefaultDrawables[MAXDEPTH + 1];
 extern Pixmap xnestIconBitmap;
 extern Pixmap xnestScreenSaverPixmap;
-extern XlibGC xnestBitmapGC;
-extern unsigned long xnestEventMask;
+extern uint32_t xnestBitmapGC;
+extern uint32_t xnestEventMask;
 
 void xnestOpenDisplay(int argc, char *argv[]);
 void xnestCloseDisplay(void);

hw/xnest/Events.c

@@ -31,7 +31,7 @@ is" without express or implied warranty.
 
 #include "mi.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Args.h"
 #include "Color.h"
@@ -65,42 +65,6 @@ SetTimeSinceLastInputEvent(void)
     lastEventTime = GetTimeInMillis();
 }
 
-static Bool
-xnestExposurePredicate(Display * dpy, XEvent * event, char *args)
-{
-    return event->type == Expose || event->type == ProcessedExpose;
-}
-
-static Bool
-xnestNotExposurePredicate(Display * dpy, XEvent * event, char *args)
-{
-    return !xnestExposurePredicate(dpy, event, args);
-}
-
-void
-xnestCollectExposures(void)
-{
-    XEvent X;
-    WindowPtr pWin;
-    RegionRec Rgn;
-    BoxRec Box;
-
-    while (XCheckIfEvent(xnestDisplay, &X, xnestExposurePredicate, NULL)) {
-        pWin = xnestWindowPtr(X.xexpose.window);
-
-        if (pWin && X.xexpose.width && X.xexpose.height) {
-            Box.x1 = pWin->drawable.x + wBorderWidth(pWin) + X.xexpose.x;
-            Box.y1 = pWin->drawable.y + wBorderWidth(pWin) + X.xexpose.y;
-            Box.x2 = Box.x1 + X.xexpose.width;
-            Box.y2 = Box.y1 + X.xexpose.height;
-
-            RegionInit(&Rgn, &Box, 1);
-
-            miSendExposures(pWin, &Rgn, Box.x2, Box.y2);
-        }
-    }
-}
-
 void
 xnestQueueKeyEvent(int type, unsigned int keycode)
 {
@@ -108,78 +72,106 @@ xnestQueueKeyEvent(int type, unsigned int keycode)
     QueueKeyboardEvents(xnestKeyboardDevice, type, keycode);
 }
 
-void
-xnestCollectEvents(void)
-{
-    XEvent X;
-    int valuators[2];
-    ValuatorMask mask;
-    ScreenPtr pScreen;
+#define EVTYPE(tname) tname *ev = (tname*)event
 
-    while (XCheckIfEvent(xnestDisplay, &X, xnestNotExposurePredicate, NULL)) {
-        switch (X.type) {
+static void
+xnest_handle_event(xcb_generic_event_t *event)
+{
+    if (!event)
+        return;
+
+    switch (event->response_type & ~0x80) {
         case KeyPress:
-            xnestUpdateModifierState(X.xkey.state);
-            xnestQueueKeyEvent(KeyPress, X.xkey.keycode);
+        {
+            EVTYPE(xcb_key_press_event_t);
+            xnestUpdateModifierState(ev->state);
+            xnestQueueKeyEvent(KeyPress, ev->detail);
             break;
+        }
 
         case KeyRelease:
-            xnestUpdateModifierState(X.xkey.state);
-            xnestQueueKeyEvent(KeyRelease, X.xkey.keycode);
+        {
+            EVTYPE(xcb_key_release_event_t);
+            xnestUpdateModifierState(ev->state);
+            xnestQueueKeyEvent(KeyRelease, ev->detail);
             break;
+        }
 
         case ButtonPress:
+        {
+            ValuatorMask mask;
+            EVTYPE(xcb_button_press_event_t);
             valuator_mask_set_range(&mask, 0, 0, NULL);
-            xnestUpdateModifierState(X.xkey.state);
+            xnestUpdateModifierState(ev->state);
             lastEventTime = GetTimeInMillis();
             QueuePointerEvents(xnestPointerDevice, ButtonPress,
-                               X.xbutton.button, POINTER_RELATIVE, &mask);
+                               ev->detail, POINTER_RELATIVE, &mask);
             break;
+        }
 
         case ButtonRelease:
+        {
+            ValuatorMask mask;
+            EVTYPE(xcb_button_release_event_t);
             valuator_mask_set_range(&mask, 0, 0, NULL);
-            xnestUpdateModifierState(X.xkey.state);
+            xnestUpdateModifierState(ev->state);
             lastEventTime = GetTimeInMillis();
             QueuePointerEvents(xnestPointerDevice, ButtonRelease,
-                               X.xbutton.button, POINTER_RELATIVE, &mask);
+                               ev->detail, POINTER_RELATIVE, &mask);
             break;
+        }
 
         case MotionNotify:
-            valuators[0] = X.xmotion.x;
-            valuators[1] = X.xmotion.y;
+        {
+            EVTYPE(xcb_motion_notify_event_t);
+            ValuatorMask mask;
+            int valuators[2];
+            valuators[0] = ev->event_x;
+            valuators[1] = ev->event_y;
             valuator_mask_set_range(&mask, 0, 2, valuators);
             lastEventTime = GetTimeInMillis();
             QueuePointerEvents(xnestPointerDevice, MotionNotify,
                                0, POINTER_ABSOLUTE, &mask);
             break;
+        }
 
         case FocusIn:
-            if (X.xfocus.detail != NotifyInferior) {
-                pScreen = xnestScreen(X.xfocus.window);
+        {
+            EVTYPE(xcb_focus_in_event_t);
+            if (ev->detail != NotifyInferior) {
+                ScreenPtr pScreen = xnestScreen(ev->event);
                 if (pScreen)
                     xnestDirectInstallColormaps(pScreen);
             }
             break;
+        }
 
         case FocusOut:
-            if (X.xfocus.detail != NotifyInferior) {
-                pScreen = xnestScreen(X.xfocus.window);
+        {
+            EVTYPE(xcb_focus_out_event_t);
+            if (ev->detail != NotifyInferior) {
+                ScreenPtr pScreen = xnestScreen(ev->event);
                 if (pScreen)
                     xnestDirectUninstallColormaps(pScreen);
             }
             break;
+        }
 
         case KeymapNotify:
             break;
 
         case EnterNotify:
-            if (X.xcrossing.detail != NotifyInferior) {
-                pScreen = xnestScreen(X.xcrossing.window);
+        {
+            EVTYPE(xcb_enter_notify_event_t);
+            if (ev->detail != NotifyInferior) {
+                ScreenPtr pScreen = xnestScreen(ev->event);
                 if (pScreen) {
-                    NewCurrentScreen(inputInfo.pointer, pScreen, X.xcrossing.x,
-                                     X.xcrossing.y);
-                    valuators[0] = X.xcrossing.x;
-                    valuators[1] = X.xcrossing.y;
+                    ValuatorMask mask;
+                    int valuators[2];
+                    NewCurrentScreen(inputInfo.pointer, pScreen,
+                                     ev->event_x, ev->event_y);
+                    valuators[0] = ev->event_x;
+                    valuators[1] = ev->event_y;
                     valuator_mask_set_range(&mask, 0, 2, valuators);
                     lastEventTime = GetTimeInMillis();
                     QueuePointerEvents(xnestPointerDevice, MotionNotify,
@@ -188,21 +180,28 @@ xnestCollectEvents(void)
                 }
             }
             break;
+        }
 
         case LeaveNotify:
-            if (X.xcrossing.detail != NotifyInferior) {
-                pScreen = xnestScreen(X.xcrossing.window);
+        {
+            EVTYPE(xcb_leave_notify_event_t);
+            if (ev->detail != NotifyInferior) {
+                ScreenPtr pScreen = xnestScreen(ev->event);
                 if (pScreen) {
                     xnestDirectUninstallColormaps(pScreen);
                 }
             }
             break;
+        }
 
         case DestroyNotify:
-            if (xnestParentWindow != (Window) 0 &&
-                X.xdestroywindow.window == xnestParentWindow)
+        {
+            xcb_destroy_notify_event_t *ev = (xcb_destroy_notify_event_t*)event;
+            if (xnestParentWindow &&
+                ev->window == xnestParentWindow)
                 exit(0);
             break;
+        }
 
         case CirculateNotify:
         case ConfigureNotify:
@@ -210,12 +209,65 @@ xnestCollectEvents(void)
         case MapNotify:
         case ReparentNotify:
         case UnmapNotify:
+            break;
+
+        case Expose:
+        {
+            EVTYPE(xcb_expose_event_t);
+            WindowPtr pWin = xnestWindowPtr(ev->window);
+            if (pWin && ev->width && ev->height) {
+                RegionRec Rgn;
+                BoxRec Box = {
+                    .x1 = pWin->drawable.x + wBorderWidth(pWin) + ev->x,
+                    .y1 = pWin->drawable.y + wBorderWidth(pWin) + ev->y,
+                    .x2 = Box.x1 + ev->width,
+                    .y2 = Box.y1 + ev->height,
+                };
+                RegionInit(&Rgn, &Box, 1);
+                miSendExposures(pWin, &Rgn, Box.x1, Box.y1);
+            }
+        }
+        break;
+
         case NoExpose:
+            ErrorF("xnest: received stray NoExpose\n");
+        break;
+        case GraphicsExpose:
+            ErrorF("xnest: received stray GraphicsExpose\n");
         break;
 
         default:
-            ErrorF("xnest warning: unhandled event: %d\n", X.type);
+            ErrorF("xnest warning: unhandled event: %d\n", event->response_type);
             break;
     }
 }
+
+void
+xnestCollectEvents(void)
+{
+    /* process queued events */
+    xnestEventQueue *tmp = NULL, *walk = NULL;
+    xorg_list_for_each_entry_safe(walk, tmp, &xnestUpstreamInfo.eventQueue.entry, entry) {
+        xnest_handle_event(walk->event);
+        xorg_list_del(&walk->entry);
+        free(walk->event);
+        free(walk);
+    }
+
+    xcb_flush(xnestUpstreamInfo.conn);
+
+    int err = xcb_connection_has_error(xnestUpstreamInfo.conn);
+    if (err) {
+        ErrorF("Xnest: upstream connection error: %d\n", err);
+        exit(0);
+    }
+
+    /* fetch new events from xcb */
+    xcb_generic_event_t *event = NULL;
+    while ((event = xcb_poll_for_event(xnestUpstreamInfo.conn))) {
+        xnest_handle_event(event);
+        free(event);
+    }
+
+    xcb_flush(xnestUpstreamInfo.conn);
 }

hw/xnest/Events.h

@@ -17,12 +17,9 @@ is" without express or implied warranty.
 
 #include <X11/Xmd.h>
 
-#define ProcessedExpose (LASTEvent + 1)
-
 extern CARD32 lastEventTime;
 
 void SetTimeSinceLastInputEvent(void);
-void xnestCollectExposures(void);
 void xnestCollectEvents(void);
 void xnestQueueKeyEvent(int type, unsigned int keycode);
 

hw/xnest/Font.c

@@ -28,7 +28,7 @@ is" without express or implied warranty.
 #include "dixfontstr.h"
 #include "scrnintstr.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "XNFont.h"
@@ -38,7 +38,7 @@ int xnestFontPrivateIndex;
 Bool
 xnestRealizeFont(ScreenPtr pScreen, FontPtr pFont)
 {
-    void *priv;
+    xnestPrivFont *priv;
     Atom name_atom, value_atom;
     int nprops;
     FontPropPtr props;
@@ -47,7 +47,7 @@ xnestRealizeFont(ScreenPtr pScreen, FontPtr pFont)
 
     xfont2_font_set_private(pFont, xnestFontPrivateIndex, NULL);
 
-    name_atom = MakeAtom("FONT", 4, True);
+    name_atom = MakeAtom("FONT", 4, TRUE);
     value_atom = 0L;
 
     nprops = pFont->info.nprops;
@@ -60,32 +60,46 @@ xnestRealizeFont(ScreenPtr pScreen, FontPtr pFont)
         }
 
     if (!value_atom)
-        return False;
+        return FALSE;
 
     name = NameForAtom(value_atom);
 
     if (!name)
-        return False;
+        return FALSE;
 
     priv = (void *) malloc(sizeof(xnestPrivFont));
     xfont2_font_set_private(pFont, xnestFontPrivateIndex, priv);
 
-    xnestFontPriv(pFont)->font_struct = XLoadQueryFont(xnestDisplay, name);
+    priv->font_id = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_open_font(xnestUpstreamInfo.conn, priv->font_id, strlen(name), name);
 
-    if (!xnestFontStruct(pFont))
-        return False;
+    xcb_generic_error_t *err = NULL;
+    priv->font_reply = xcb_query_font_reply(
+        xnestUpstreamInfo.conn,
+        xcb_query_font(xnestUpstreamInfo.conn, priv->font_id),
+        &err);
+    if (err) {
+        ErrorF("failed to query font \"%s\": %d", name, err->error_code);
+        free(err);
+        return FALSE;
+    }
+    if (!priv->font_reply) {
+        ErrorF("failed to query font \"%s\": no reply", name);
+        return FALSE;
+    }
+    priv->chars_len = xcb_query_font_char_infos_length(priv->font_reply);
+    priv->chars = xcb_query_font_char_infos(priv->font_reply);
 
-    return True;
+    return TRUE;
 }
 
 Bool
 xnestUnrealizeFont(ScreenPtr pScreen, FontPtr pFont)
 {
     if (xnestFontPriv(pFont)) {
-        if (xnestFontStruct(pFont))
-            XFreeFont(xnestDisplay, xnestFontStruct(pFont));
+        xcb_close_font(xnestUpstreamInfo.conn, xnestFontPriv(pFont)->font_id);
         free(xnestFontPriv(pFont));
         xfont2_font_set_private(pFont, xnestFontPrivateIndex, NULL);
     }
-    return True;
+    return TRUE;
 }

hw/xnest/GC.c

@@ -28,7 +28,7 @@ is" without express or implied warranty.
 #include "mistruct.h"
 #include "region.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "XNGC.h"
@@ -80,11 +80,14 @@ xnestCreateGC(GCPtr pGC)
 
     pGC->miTranslate = 1;
 
-    xnestGCPriv(pGC)->gc = XCreateGC(xnestDisplay,
+    xnestGCPriv(pGC)->gc = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_create_gc(xnestUpstreamInfo.conn,
+                  xnestGCPriv(pGC)->gc,
                   xnestDefaultDrawables[pGC->depth],
-                                     0L, NULL);
+                  0,
+                  NULL);
 
-    return True;
+    return TRUE;
 }
 
 void
@@ -95,7 +98,7 @@ xnestValidateGC(GCPtr pGC, unsigned long changes, DrawablePtr pDrawable)
 void
 xnestChangeGC(GCPtr pGC, unsigned long mask)
 {
-    XGCValues values;
+    XnGCValues values;
 
     if (mask & GCFunction)
         values.function = pGC->alu;
@@ -144,7 +147,7 @@ xnestChangeGC(GCPtr pGC, unsigned long mask)
         values.ts_y_origin = pGC->patOrg.y;
 
     if (mask & GCFont)
-        values.font = xnestFont(pGC->font);
+        values.font = xnestFontPriv(pGC->font)->font_id;
 
     if (mask & GCSubwindowMode)
         values.subwindow_mode = pGC->subWindowMode;
@@ -166,62 +169,89 @@ xnestChangeGC(GCPtr pGC, unsigned long mask)
 
     if (mask & GCDashList) {
         mask &= ~GCDashList;
-        XSetDashes(xnestDisplay, xnestGC(pGC),
-                   pGC->dashOffset, (char *) pGC->dash, pGC->numInDashList);
+        xcb_set_dashes(xnestUpstreamInfo.conn,
+                       xnestUpstreamGC(pGC),
+                       pGC->dashOffset,
+                       pGC->numInDashList,
+                       (uint8_t*) pGC->dash);
     }
 
     if (mask & GCArcMode)
         values.arc_mode = pGC->arcMode;
 
     if (mask)
-        XChangeGC(xnestDisplay, xnestGC(pGC), mask, &values);
+        xnChangeGC(xnestUpstreamInfo.conn, xnestUpstreamGC(pGC), values, mask);
 }
 
 void
 xnestCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst)
 {
-    XCopyGC(xnestDisplay, xnestGC(pGCSrc), mask, xnestGC(pGCDst));
+    xcb_copy_gc(xnestUpstreamInfo.conn,
+                xnestGC(pGCSrc),
+                xnestGC(pGCDst),
+                mask);
 }
 
 void
 xnestDestroyGC(GCPtr pGC)
 {
-    XFreeGC(xnestDisplay, xnestGC(pGC));
+    xcb_free_gc(xnestUpstreamInfo.conn, xnestGC(pGC));
 }
 
 void
 xnestChangeClip(GCPtr pGC, int type, void *pValue, int nRects)
 {
-    int i;
-    BoxPtr pBox;
-    XRectangle *pRects;
-
     xnestDestroyClip(pGC);
 
     switch (type) {
     case CT_NONE:
-        XSetClipMask(xnestDisplay, xnestGC(pGC), None);
+        {
+            uint32_t pixmap = XCB_PIXMAP_NONE;
+            xcb_change_gc(xnestUpstreamInfo.conn,
+                          xnestUpstreamGC(pGC),
+                          XCB_GC_CLIP_MASK,
+                          &pixmap);
+        }
         pValue = NULL;
         break;
 
     case CT_REGION:
+        {
             nRects = RegionNumRects((RegionPtr) pValue);
-        pRects = xallocarray(nRects, sizeof(*pRects));
-        pBox = RegionRects((RegionPtr) pValue);
-        for (i = nRects; i-- > 0;) {
-            pRects[i].x = pBox[i].x1;
-            pRects[i].y = pBox[i].y1;
-            pRects[i].width = pBox[i].x2 - pBox[i].x1;
-            pRects[i].height = pBox[i].y2 - pBox[i].y1;
+            xcb_rectangle_t *rects= calloc(nRects, sizeof(xcb_rectangle_t));
+            if (rects == NULL) {
+                ErrorF("xnestChangeClip: memory alloc failure");
+                return;
+            }
+            BoxPtr pBox = RegionRects((RegionPtr) pValue);
+            for (int i = nRects; i-- > 0;)
+                rects[i] = (xcb_rectangle_t) {
+                    .x = pBox[i].x1,
+                    .y = pBox[i].y1,
+                    .width = pBox[i].x2 - pBox[i].x1,
+                    .height = pBox[i].y2 - pBox[i].y1,
+                };
+            xcb_set_clip_rectangles(
+                xnestUpstreamInfo.conn,
+                XCB_CLIP_ORDERING_UNSORTED,
+                xnestUpstreamGC(pGC),
+                0,
+                0,
+                nRects,
+                rects);
+
+            free(rects);
         }
-        XSetClipRectangles(xnestDisplay, xnestGC(pGC), 0, 0,
-                           pRects, nRects, Unsorted);
-        free((char *) pRects);
         break;
 
     case CT_PIXMAP:
-        XSetClipMask(xnestDisplay, xnestGC(pGC),
-                     xnestPixmap((PixmapPtr) pValue));
+        {
+            uint32_t val = xnestPixmap((PixmapPtr) pValue);
+            xcb_change_gc(xnestUpstreamInfo.conn,
+                          xnestUpstreamGC(pGC),
+                          XCB_GC_CLIP_MASK,
+                          &val);
+        }
         /*
          * Need to change into region, so subsequent uses are with
          * current pixmap contents.
@@ -232,27 +262,47 @@ xnestChangeClip(GCPtr pGC, int type, void *pValue, int nRects)
         break;
 
     case CT_UNSORTED:
-        XSetClipRectangles(xnestDisplay, xnestGC(pGC),
+        xcb_set_clip_rectangles(
+            xnestUpstreamInfo.conn,
+            XCB_CLIP_ORDERING_UNSORTED,
+            xnestUpstreamGC(pGC),
             pGC->clipOrg.x, pGC->clipOrg.y,
-                           (XRectangle *) pValue, nRects, Unsorted);
+            nRects,
+            (xcb_rectangle_t*)pValue);
         break;
 
     case CT_YSORTED:
-        XSetClipRectangles(xnestDisplay, xnestGC(pGC),
-                           pGC->clipOrg.x, pGC->clipOrg.y,
-                           (XRectangle *) pValue, nRects, YSorted);
+        xcb_set_clip_rectangles(
+            xnestUpstreamInfo.conn,
+            XCB_CLIP_ORDERING_Y_SORTED,
+            xnestUpstreamGC(pGC),
+            pGC->clipOrg.x,
+            pGC->clipOrg.y,
+            nRects,
+            (xcb_rectangle_t*)pValue);
         break;
 
     case CT_YXSORTED:
-        XSetClipRectangles(xnestDisplay, xnestGC(pGC),
-                           pGC->clipOrg.x, pGC->clipOrg.y,
-                           (XRectangle *) pValue, nRects, YXSorted);
+        xcb_set_clip_rectangles(
+            xnestUpstreamInfo.conn,
+            XCB_CLIP_ORDERING_YX_SORTED,
+            xnestUpstreamGC(pGC),
+            pGC->clipOrg.x,
+            pGC->clipOrg.y,
+            nRects,
+            (xcb_rectangle_t*)pValue);
+
         break;
 
     case CT_YXBANDED:
-        XSetClipRectangles(xnestDisplay, xnestGC(pGC),
-                           pGC->clipOrg.x, pGC->clipOrg.y,
-                           (XRectangle *) pValue, nRects, YXBanded);
+        xcb_set_clip_rectangles(
+            xnestUpstreamInfo.conn,
+            XCB_CLIP_ORDERING_YX_BANDED,
+            xnestUpstreamGC(pGC),
+            pGC->clipOrg.x,
+            pGC->clipOrg.y,
+            nRects,
+            (xcb_rectangle_t*)pValue);
         break;
     }
 
@@ -279,7 +329,11 @@ xnestDestroyClip(GCPtr pGC)
 {
     if (pGC->clientClip) {
         RegionDestroy(pGC->clientClip);
-        XSetClipMask(xnestDisplay, xnestGC(pGC), None);
+        uint32_t val = XCB_PIXMAP_NONE;
+        xcb_change_gc(xnestUpstreamInfo.conn,
+                      xnestUpstreamGC(pGC),
+                      XCB_GC_CLIP_MASK,
+                      &val);
         pGC->clientClip = NULL;
     }
 }

hw/xnest/GCOps.c

@@ -29,7 +29,7 @@ is" without express or implied warranty.
 #include "region.h"
 #include "servermd.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Screen.h"
@@ -37,7 +37,6 @@ is" without express or implied warranty.
 #include "XNFont.h"
 #include "GCOps.h"
 #include "Drawable.h"
-#include "Visual.h"
 
 void
 xnestFillSpans(DrawablePtr pDrawable, GCPtr pGC, int nSpans, xPoint * pPoints,
@@ -64,74 +63,81 @@ void
 xnestQueryBestSize(int class, unsigned short *pWidth, unsigned short *pHeight,
                    ScreenPtr pScreen)
 {
-    unsigned int width, height;
-
-    width = *pWidth;
-    height = *pHeight;
-
-    XQueryBestSize(xnestDisplay, class,
+    xcb_generic_error_t *err = NULL;
+    xcb_query_best_size_reply_t *reply = xcb_query_best_size_reply(
+        xnestUpstreamInfo.conn,
+        xcb_query_best_size(
+            xnestUpstreamInfo.conn,
+            class,
             xnestDefaultWindows[pScreen->myNum],
-                   width, height, &width, &height);
+            *pWidth,
+            *pHeight),
+        &err);
 
-    *pWidth = width;
-    *pHeight = height;
+    if (err) {
+        ErrorF("QueryBestSize request failed: %d\n", err->error_code);
+        free(err);
+        return;
+    }
+
+    if (!reply) {
+        ErrorF("QueryBestSize request failed: no reply\n");
+        return;
+    }
+
+    *pWidth = reply->width;
+    *pHeight = reply->height;
+    free(reply);
 }
 
 void
 xnestPutImage(DrawablePtr pDrawable, GCPtr pGC, int depth, int x, int y,
               int w, int h, int leftPad, int format, char *pImage)
 {
-    XImage *ximage;
-
-    ximage = XCreateImage(xnestDisplay, xnestDefaultVisual(pDrawable->pScreen),
-                          depth, format, leftPad, (char *) pImage,
-                          w, h, BitmapPad(xnestDisplay),
-                          (format == ZPixmap) ?
-                          PixmapBytePad(w, depth) : BitmapBytePad(w + leftPad));
-
-    if (ximage) {
-        XPutImage(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                  ximage, 0, 0, x, y, w, h);
-        XFree(ximage);
-    }
-}
-
-static int
-xnestIgnoreErrorHandler (Display     *dpy,
-                         XErrorEvent *event)
-{
-    return False; /* return value is ignored */
+    xcb_put_image(xnestUpstreamInfo.conn,
+                  format,
+                  xnestDrawable(pDrawable),
+                  xnestUpstreamGC(pGC),
+                  w,
+                  h,
+                  x,
+                  y,
+                  leftPad,
+                  depth,
+                  (format == XCB_IMAGE_FORMAT_Z_PIXMAP ? PixmapBytePad(w, depth)
+                                                       : BitmapBytePad(w + leftPad)) * h,
+                  (uint8_t*)pImage);
 }
 
 void
 xnestGetImage(DrawablePtr pDrawable, int x, int y, int w, int h,
               unsigned int format, unsigned long planeMask, char *pImage)
 {
-    XImage *ximage;
-    int length;
-    int (*old_handler)(Display*, XErrorEvent*);
+    xcb_generic_error_t * err = NULL;
+    xcb_get_image_reply_t *reply= xcb_get_image_reply(
+        xnestUpstreamInfo.conn,
+        xcb_get_image(
+            xnestUpstreamInfo.conn,
+            format,
+            xnestDrawable(pDrawable),
+            x, y, w, h, planeMask),
+        &err);
 
-    /* we may get BadMatch error when xnest window is minimized */
-    XSync(xnestDisplay, False);
-    old_handler = XSetErrorHandler (xnestIgnoreErrorHandler);
-
-    ximage = XGetImage(xnestDisplay, xnestDrawable(pDrawable),
-                       x, y, w, h, planeMask, format);
-    XSetErrorHandler(old_handler);
-
-    if (ximage) {
-        length = ximage->bytes_per_line * ximage->height;
-
-        memmove(pImage, ximage->data, length);
-
-        XDestroyImage(ximage);
-    }
+    if (err) {
+        //  badMatch may happeen if the upstream window is currently minimized
+        if (err->error_code != BadMatch)
+            LogMessage(X_WARNING, "xnestGetImage: received error %d\n", err->error_code);
+        free(err);
+        return;
     }
 
-static Bool
-xnestBitBlitPredicate(Display * dpy, XEvent * event, char *args)
-{
-    return event->type == GraphicsExpose || event->type == NoExpose;
+    if (!reply) {
+        LogMessage(X_WARNING, "xnestGetImage: received no reply\n");
+        return;
+    }
+
+    memmove(pImage, xcb_get_image_data(reply), xcb_get_image_data_length(reply));
+    free(reply);
 }
 
 static RegionPtr
@@ -140,9 +146,7 @@ xnestBitBlitHelper(GCPtr pGC)
     if (!pGC->graphicsExposures)
         return NullRegion;
     else {
-        XEvent event;
         RegionPtr pReg, pTmpReg;
-        BoxRec Box;
         Bool pending, overlap;
 
         pReg = RegionCreate(NULL, 1);
@@ -150,25 +154,44 @@ xnestBitBlitHelper(GCPtr pGC)
         if (!pReg || !pTmpReg)
             return NullRegion;
 
-        pending = True;
-        while (pending) {
-            XIfEvent(xnestDisplay, &event, xnestBitBlitPredicate, NULL);
+        xcb_flush(xnestUpstreamInfo.conn);
 
-            switch (event.type) {
+        pending = TRUE;
+        while (pending) {
+            xcb_generic_event_t *event = xcb_wait_for_event(xnestUpstreamInfo.conn);
+            if (!event) {
+                pending = FALSE;
+                break;
+            }
+
+            switch (event->response_type & ~0x80) {
                 case NoExpose:
-                pending = False;
+                    pending = FALSE;
+                    free(event);
                     break;
 
                 case GraphicsExpose:
-                Box.x1 = event.xgraphicsexpose.x;
-                Box.y1 = event.xgraphicsexpose.y;
-                Box.x2 = event.xgraphicsexpose.x + event.xgraphicsexpose.width;
-                Box.y2 = event.xgraphicsexpose.y + event.xgraphicsexpose.height;
+                {
+                    xcb_graphics_exposure_event_t* ev = (xcb_graphics_exposure_event_t*)event;
+                    BoxRec Box = {
+                        .x1 = ev->x,
+                        .y1 = ev->y,
+                        .x2 = ev->x + ev->width,
+                        .y2 = ev->y + ev->height,
+                    };
                     RegionReset(pTmpReg, &Box);
                     RegionAppend(pReg, pTmpReg);
-                pending = event.xgraphicsexpose.count;
+                    pending = ev->count;
+                    free(event);
                     break;
                 }
+                default:
+                {
+                    xnestEventQueue *q = malloc(sizeof(xnestEventQueue));
+                    q->event = event;
+                    xorg_list_add(&q->entry, &xnestUpstreamInfo.eventQueue.entry);
+                }
+            }
         }
 
         RegionDestroy(pTmpReg);
@@ -182,9 +205,11 @@ xnestCopyArea(DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable,
               GCPtr pGC, int srcx, int srcy, int width, int height,
               int dstx, int dsty)
 {
-    XCopyArea(xnestDisplay,
-              xnestDrawable(pSrcDrawable), xnestDrawable(pDstDrawable),
-              xnestGC(pGC), srcx, srcy, width, height, dstx, dsty);
+    xcb_copy_area(xnestUpstreamInfo.conn,
+                  xnestDrawable(pSrcDrawable),
+                  xnestDrawable(pDstDrawable),
+                  xnestUpstreamGC(pGC),
+                  srcx, srcy, dstx, dsty, width, height);
 
     return xnestBitBlitHelper(pGC);
 }
@@ -194,9 +219,11 @@ xnestCopyPlane(DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable,
                GCPtr pGC, int srcx, int srcy, int width, int height,
                int dstx, int dsty, unsigned long plane)
 {
-    XCopyPlane(xnestDisplay,
-               xnestDrawable(pSrcDrawable), xnestDrawable(pDstDrawable),
-               xnestGC(pGC), srcx, srcy, width, height, dstx, dsty, plane);
+    xcb_copy_plane(xnestUpstreamInfo.conn,
+                   xnestDrawable(pSrcDrawable),
+                   xnestDrawable(pDstDrawable),
+                   xnestUpstreamGC(pGC),
+                   srcx, srcy, dstx, dsty, width, height, plane);
 
     return xnestBitBlitHelper(pGC);
 }
@@ -205,106 +232,184 @@ void
 xnestPolyPoint(DrawablePtr pDrawable, GCPtr pGC, int mode, int nPoints,
                DDXPointPtr pPoints)
 {
-    XDrawPoints(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                (XPoint *) pPoints, nPoints, mode);
+    /* xPoint and xcb_segment_t are defined in the same way, both matching
+       the protocol layout, so we can directly typecast them */
+    xcb_poly_point(xnestUpstreamInfo.conn,
+                   mode,
+                   xnestDrawable(pDrawable),
+                   xnestUpstreamGC(pGC),
+                   nPoints,
+                   (xcb_point_t*)pPoints);
 }
 
 void
 xnestPolylines(DrawablePtr pDrawable, GCPtr pGC, int mode, int nPoints,
                DDXPointPtr pPoints)
 {
-    XDrawLines(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-               (XPoint *) pPoints, nPoints, mode);
+    /* xPoint and xcb_segment_t are defined in the same way, both matching
+       the protocol layout, so we can directly typecast them */
+    xcb_poly_line(xnestUpstreamInfo.conn,
+                  mode,
+                  xnestDrawable(pDrawable),
+                  xnestUpstreamGC(pGC),
+                  nPoints,
+                  (xcb_point_t*)pPoints);
 }
 
 void
 xnestPolySegment(DrawablePtr pDrawable, GCPtr pGC, int nSegments,
                  xSegment * pSegments)
 {
-    XDrawSegments(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                  (XSegment *) pSegments, nSegments);
+    /* xSegment and xcb_segment_t are defined in the same way, both matching
+       the protocol layout, so we can directly typecast them */
+    xcb_poly_segment(xnestUpstreamInfo.conn,
+                     xnestDrawable(pDrawable),
+                     xnestUpstreamGC(pGC),
+                     nSegments,
+                     (xcb_segment_t*)pSegments);
 }
 
 void
 xnestPolyRectangle(DrawablePtr pDrawable, GCPtr pGC, int nRectangles,
                    xRectangle *pRectangles)
 {
-    XDrawRectangles(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                    (XRectangle *) pRectangles, nRectangles);
+    /* xRectangle and xcb_rectangle_t are defined in the same way, both matching
+       the protocol layout, so we can directly typecast them */
+    xcb_poly_rectangle(xnestUpstreamInfo.conn,
+                       xnestDrawable(pDrawable),
+                       xnestUpstreamGC(pGC),
+                       nRectangles,
+                       (xcb_rectangle_t*)pRectangles);
 }
 
 void
 xnestPolyArc(DrawablePtr pDrawable, GCPtr pGC, int nArcs, xArc * pArcs)
 {
-    XDrawArcs(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-              (XArc *) pArcs, nArcs);
+    /* xArc and xcb_arc_t are defined in the same way, both matching
+       the protocol layout, so we can directly typecast them */
+    xcb_poly_arc(xnestUpstreamInfo.conn,
+                 xnestDrawable(pDrawable),
+                 xnestUpstreamGC(pGC),
+                 nArcs,
+                 (xcb_arc_t*)pArcs);
 }
 
 void
 xnestFillPolygon(DrawablePtr pDrawable, GCPtr pGC, int shape, int mode,
                  int nPoints, DDXPointPtr pPoints)
 {
-    XFillPolygon(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                 (XPoint *) pPoints, nPoints, shape, mode);
+    /* xPoint and xcb_segment_t are defined in the same way, both matching
+       the protocol layout, so we can directly typecast them */
+    xcb_fill_poly(xnestUpstreamInfo.conn,
+                  xnestDrawable(pDrawable),
+                  xnestUpstreamGC(pGC),
+                  shape,
+                  mode,
+                  nPoints,
+                  (xcb_point_t*)pPoints);
 }
 
 void
 xnestPolyFillRect(DrawablePtr pDrawable, GCPtr pGC, int nRectangles,
                   xRectangle *pRectangles)
 {
-    XFillRectangles(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                    (XRectangle *) pRectangles, nRectangles);
+    /* xRectangle and xcb_rectangle_t are defined in the same way, both matching
+       the protocol layout, so we can directly typecast them */
+    xcb_poly_fill_rectangle(xnestUpstreamInfo.conn,
+                            xnestDrawable(pDrawable),
+                            xnestUpstreamGC(pGC),
+                            nRectangles,
+                            (xcb_rectangle_t*)pRectangles);
 }
 
 void
 xnestPolyFillArc(DrawablePtr pDrawable, GCPtr pGC, int nArcs, xArc * pArcs)
 {
-    XFillArcs(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-              (XArc *) pArcs, nArcs);
+    /* xArc and xcb_arc_t are defined in the same way, both matching
+       the protocol layout, so we can directly typecast them */
+    xcb_poly_fill_arc(xnestUpstreamInfo.conn,
+                      xnestDrawable(pDrawable),
+                      xnestUpstreamGC(pGC),
+                      nArcs,
+                      (xcb_arc_t*)pArcs);
 }
 
 int
 xnestPolyText8(DrawablePtr pDrawable, GCPtr pGC, int x, int y, int count,
                char *string)
 {
-    int width;
+    // we need to prepend a xTextElt struct before our actual characters
+    // won't get more than 254 elements, since it's already processed by doPolyText()
+    int const bufsize = sizeof(xTextElt) + count;
+    uint8_t *buffer = malloc(bufsize);
+    xTextElt *elt = (xTextElt*)buffer;
+    elt->len = count;
+    elt->delta = 0;
+    memcpy(buffer+2, string, count);
 
-    XDrawString(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                x, y, string, count);
+    xcb_poly_text_8(xnestUpstreamInfo.conn,
+                    xnestDrawable(pDrawable),
+                    xnestUpstreamGC(pGC),
+                    x,
+                    y,
+                    bufsize,
+                    (uint8_t*)buffer);
 
-    width = XTextWidth(xnestFontStruct(pGC->font), string, count);
+    free(buffer);
 
-    return width + x;
+    return x + xnestTextWidth(xnestFontPriv(pGC->font), string, count);
 }
 
 int
 xnestPolyText16(DrawablePtr pDrawable, GCPtr pGC, int x, int y, int count,
                 unsigned short *string)
 {
-    int width;
+    // we need to prepend a xTextElt struct before our actual characters
+    // won't get more than 254 elements, since it's already processed by doPolyText()
+    int const bufsize = sizeof(xTextElt) + count*2;
+    uint8_t *buffer = malloc(bufsize);
+    xTextElt *elt = (xTextElt*)buffer;
+    elt->len = count;
+    elt->delta = 0;
+    memcpy(buffer+2, string, count*2);
 
-    XDrawString16(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                  x, y, (XChar2b *) string, count);
+    xcb_poly_text_16(xnestUpstreamInfo.conn,
+                     xnestDrawable(pDrawable),
+                     xnestUpstreamGC(pGC),
+                     x,
+                     y,
+                     bufsize,
+                     buffer);
 
-    width = XTextWidth16(xnestFontStruct(pGC->font), (XChar2b *) string, count);
+    free(buffer);
 
-    return width + x;
+    return x + xnestTextWidth16(xnestFontPriv(pGC->font), string, count);
 }
 
 void
 xnestImageText8(DrawablePtr pDrawable, GCPtr pGC, int x, int y, int count,
                 char *string)
 {
-    XDrawImageString(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                     x, y, string, count);
+    xcb_image_text_8(xnestUpstreamInfo.conn,
+                     count,
+                     xnestDrawable(pDrawable),
+                     xnestUpstreamGC(pGC),
+                     x,
+                     y,
+                     string);
 }
 
 void
 xnestImageText16(DrawablePtr pDrawable, GCPtr pGC, int x, int y, int count,
                  unsigned short *string)
 {
-    XDrawImageString16(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
-                       x, y, (XChar2b *) string, count);
+    xcb_image_text_16(xnestUpstreamInfo.conn,
+                      count,
+                      xnestDrawable(pDrawable),
+                      xnestUpstreamGC(pGC),
+                      x,
+                      y,
+                      (xcb_char2b_t*)string);
 }
 
 void
@@ -329,12 +434,35 @@ xnestPushPixels(GCPtr pGC, PixmapPtr pBitmap, DrawablePtr pDst,
 {
     /* only works for solid bitmaps */
     if (pGC->fillStyle == FillSolid) {
-        XSetStipple(xnestDisplay, xnestGC(pGC), xnestPixmap(pBitmap));
-        XSetTSOrigin(xnestDisplay, xnestGC(pGC), x, y);
-        XSetFillStyle(xnestDisplay, xnestGC(pGC), FillStippled);
-        XFillRectangle(xnestDisplay, xnestDrawable(pDst),
-                       xnestGC(pGC), x, y, width, height);
-        XSetFillStyle(xnestDisplay, xnestGC(pGC), FillSolid);
+        xnChangeGC(xnestUpstreamInfo.conn,
+                   xnestUpstreamGC(pGC),
+                   (XnGCValues) {
+                        .fill_style = XCB_FILL_STYLE_STIPPLED,
+                        .ts_x_origin = x,
+                        .ts_y_origin = y,
+                        .stipple = xnestPixmap(pBitmap),
+                   },
+                   XCB_GC_FILL_STYLE | XCB_GC_TILE_STIPPLE_ORIGIN_X |
+                      XCB_GC_TILE_STIPPLE_ORIGIN_Y | XCB_GC_STIPPLE);
+
+        xcb_rectangle_t rect = {
+            .x = x, .y = y, .width = width, .height = height,
+        };
+        xcb_poly_fill_rectangle(xnestUpstreamInfo.conn,
+                                xnestDrawable(pDst),
+                                xnestUpstreamGC(pGC),
+                                1,
+                                &rect);
+
+        xnChangeGC(xnestUpstreamInfo.conn,
+                   xnestUpstreamGC(pGC),
+                   (XnGCValues) {
+                        .fill_style = XCB_FILL_STYLE_SOLID,
+                        .ts_x_origin = x,
+                        .ts_y_origin = y,
+                        .stipple = xnestPixmap(pBitmap),
+                   },
+                   XCB_GC_FILL_STYLE);
     }
     else
         ErrorF("xnest warning: function xnestPushPixels not implemented\n");

hw/xnest/Handlers.c

@@ -25,8 +25,6 @@ is" without express or implied warranty.
 #include "windowstr.h"
 #include "servermd.h"
 
-#include "Xnest.h"
-
 #include "Display.h"
 #include "Events.h"
 #include "Handlers.h"
@@ -34,8 +32,7 @@ is" without express or implied warranty.
 void
 xnestBlockHandler(void *blockData, void *timeout)
 {
-    xnestCollectExposures();
-    XFlush(xnestDisplay);
+    xnestCollectEvents();
 }
 
 void

hw/xnest/Init.c

@@ -34,8 +34,8 @@ is" without express or implied warranty.
 #include "mi.h"
 #include "dixfontstr.h"
 #include "extinit_priv.h"
-#include "Xnest.h"
 
+#include "xnest-xcb.h"
 #include "Display.h"
 #include "Screen.h"
 #include "Pointer.h"
@@ -51,7 +51,7 @@ is" without express or implied warranty.
 #include "dpmsproc.h"
 #endif
 
-Bool xnestDoFullGeneration = True;
+Bool xnestDoFullGeneration = TRUE;
 
 #ifdef GLXEXT
 void
@@ -63,29 +63,37 @@ GlxExtensionInit(void)
 void
 InitOutput(ScreenInfo * screen_info, int argc, char *argv[])
 {
-    int i, j;
+    int i;
 
     xnestOpenDisplay(argc, argv);
 
-    screen_info->imageByteOrder = ImageByteOrder(xnestDisplay);
-    screen_info->bitmapScanlineUnit = BitmapUnit(xnestDisplay);
-    screen_info->bitmapScanlinePad = BitmapPad(xnestDisplay);
-    screen_info->bitmapBitOrder = BitmapBitOrder(xnestDisplay);
-
+    screen_info->imageByteOrder = xnestUpstreamInfo.setup->image_byte_order;
+    screen_info->bitmapScanlineUnit = xnestUpstreamInfo.setup->bitmap_format_scanline_unit;
+    screen_info->bitmapScanlinePad = xnestUpstreamInfo.setup->bitmap_format_scanline_pad;
+    screen_info->bitmapBitOrder = xnestUpstreamInfo.setup->bitmap_format_bit_order;
     screen_info->numPixmapFormats = 0;
-    for (i = 0; i < xnestNumPixmapFormats; i++)
-        for (j = 0; j < xnestNumDepths; j++)
-            if ((xnestPixmapFormats[i].depth == 1) ||
-                (xnestPixmapFormats[i].depth == xnestDepths[j])) {
+
+    xcb_format_t *fmt = xcb_setup_pixmap_formats(xnestUpstreamInfo.setup);
+    const xcb_format_t *fmtend = fmt + xcb_setup_pixmap_formats_length(xnestUpstreamInfo.setup);
+    for(; fmt != fmtend; ++fmt) {
+        xcb_depth_iterator_t depth_iter;
+        for (depth_iter = xcb_screen_allowed_depths_iterator(xnestUpstreamInfo.screenInfo);
+             depth_iter.rem;
+             xcb_depth_next(&depth_iter))
+        {
+            if ((fmt->depth == 1) ||
+                (fmt->depth == depth_iter.data->depth)) {
                 screen_info->formats[screen_info->numPixmapFormats].depth =
-                    xnestPixmapFormats[i].depth;
+                    fmt->depth;
                 screen_info->formats[screen_info->numPixmapFormats].bitsPerPixel =
-                    xnestPixmapFormats[i].bits_per_pixel;
+                    fmt->bits_per_pixel;
                 screen_info->formats[screen_info->numPixmapFormats].scanlinePad =
-                    xnestPixmapFormats[i].scanline_pad;
+                    fmt->scanline_pad;
                 screen_info->numPixmapFormats++;
                 break;
             }
+        }
+    }
 
     xnestFontPrivateIndex = xfont2_allocate_font_private_index();
 
@@ -121,7 +129,10 @@ InitInput(int argc, char *argv[])
 
     mieqInit();
 
-    SetNotifyFd(XConnectionNumber(xnestDisplay), xnestNotifyConnection, X_NOTIFY_READ, NULL);
+    SetNotifyFd(xcb_get_file_descriptor(xnestUpstreamInfo.conn),
+                xnestNotifyConnection,
+                X_NOTIFY_READ,
+                NULL);
 
     RegisterBlockAndWakeupHandlers(xnestBlockHandler, xnestWakeupHandler, NULL);
 }
@@ -135,7 +146,7 @@ CloseInput(void)
 void
 ddxGiveUp(enum ExitCode error)
 {
-    xnestDoFullGeneration = True;
+    xnestDoFullGeneration = TRUE;
     xnestCloseDisplay();
 }
 

hw/xnest/Keyboard.c

@@ -24,6 +24,7 @@ is" without express or implied warranty.
 #include <X11/Xdefs.h>
 #include <X11/Xproto.h>
 #include <X11/keysym.h>
+#include <xcb/xkb.h>
 
 #include "screenint.h"
 #include "inputstr.h"
@@ -31,7 +32,7 @@ is" without express or implied warranty.
 #include "scrnintstr.h"
 #include "servermd.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Screen.h"
@@ -41,39 +42,19 @@ is" without express or implied warranty.
 
 #include <X11/extensions/XKB.h>
 #include "xkbsrv.h"
-#include <X11/extensions/XKBconfig.h>
-
-extern Bool
- XkbQueryExtension(Display * /* dpy */ ,
-                   int * /* opcodeReturn */ ,
-                   int * /* eventBaseReturn */ ,
-                   int * /* errorBaseReturn */ ,
-                   int * /* majorRtrn */ ,
-                   int *        /* minorRtrn */
-    );
-
-extern XkbDescPtr XkbGetKeyboard(Display * /* dpy */ ,
-                                 unsigned int /* which */ ,
-                                 unsigned int   /* deviceSpec */
-    );
-
-extern Status XkbGetControls(Display * /* dpy */ ,
-                             unsigned long /* which */ ,
-                             XkbDescPtr /* desc */
-    );
 
 DeviceIntPtr xnestKeyboardDevice = NULL;
 
 void
 xnestBell(int volume, DeviceIntPtr pDev, void *ctrl, int cls)
 {
-    XBell(xnestDisplay, volume);
+    xcb_bell(xnestUpstreamInfo.conn, volume);
 }
 
 void
 DDXRingBell(int volume, int pitch, int duration)
 {
-    XBell(xnestDisplay, volume);
+    xcb_bell(xnestUpstreamInfo.conn, volume);
 }
 
 void
@@ -81,7 +62,7 @@ xnestChangeKeyboardControl(DeviceIntPtr pDev, KeybdCtrl * ctrl)
 {
 #if 0
     unsigned long value_mask;
-    XKeyboardControl values;
+    XnKeyboardControl values;
     int i;
 
     value_mask = KBKeyClickPercent |
@@ -94,7 +75,9 @@ xnestChangeKeyboardControl(DeviceIntPtr pDev, KeybdCtrl * ctrl)
     values.auto_repeat_mode = ctrl->autoRepeat ?
         AutoRepeatModeOn : AutoRepeatModeOff;
 
-    XChangeKeyboardControl(xnestDisplay, value_mask, &values);
+    uint32_t value_list[16];
+    xnestEncodeKeyboardControl(values, value_mask, value_list);
+    xcb_change_keyboard_control(xnestUpstreamConn(), value_mask, value_list);
 
     /*
        value_mask = KBKey | KBAutoRepeatMode;
@@ -107,7 +90,9 @@ xnestChangeKeyboardControl(DeviceIntPtr pDev, KeybdCtrl * ctrl)
         values.led = i;
         values.led_mode =
             (ctrl->leds & (1 << (i - 1))) ? LedModeOn : LedModeOff;
-        XChangeKeyboardControl(xnestDisplay, value_mask, &values);
+
+        xnestEncodeKeyboardControl(values, value_mask, value_list);
+        xcb_change_keyboard_control(xnestUpstreamConn(), value_mask, value_list);
     }
 #endif
 }
@@ -115,73 +100,60 @@ xnestChangeKeyboardControl(DeviceIntPtr pDev, KeybdCtrl * ctrl)
 int
 xnestKeyboardProc(DeviceIntPtr pDev, int onoff)
 {
-    XModifierKeymap *modifier_keymap;
-    KeySym *keymap;
-    int mapWidth;
-    int min_keycode, max_keycode;
-    KeySymsRec keySyms;
-    CARD8 modmap[MAP_LENGTH];
     int i, j;
-    XKeyboardState values;
-    XkbDescPtr xkb;
-    int op, event, error, major, minor;
 
     switch (onoff) {
     case DEVICE_INIT:
-        XDisplayKeycodes(xnestDisplay, &min_keycode, &max_keycode);
-#ifdef _XSERVER64
     {
-            KeySym64 *keymap64;
-            int len;
+        const int min_keycode = xnestUpstreamInfo.setup->min_keycode;
+        const int max_keycode = xnestUpstreamInfo.setup->max_keycode;
+        const int num_keycode = max_keycode - min_keycode + 1;
 
-            keymap64 = XGetKeyboardMapping(xnestDisplay,
+        xcb_get_keyboard_mapping_reply_t * keymap_reply = xnestGetKeyboardMapping(
+            xnestUpstreamInfo.conn,
             min_keycode,
-                                           max_keycode - min_keycode + 1,
-                                           &mapWidth);
-            len = (max_keycode - min_keycode + 1) * mapWidth;
-            keymap = xallocarray(len, sizeof(KeySym));
-            for (i = 0; i < len; ++i)
-                keymap[i] = keymap64[i];
-            XFree(keymap64);
+            num_keycode);
+
+        if (!keymap_reply) {
+            ErrorF("Couldn't get keyboard mappings: no reply");
+            goto XkbError;
         }
-#else
-        keymap = XGetKeyboardMapping(xnestDisplay,
-                                     min_keycode,
-                                     max_keycode - min_keycode + 1, &mapWidth);
-#endif
 
-        memset(modmap, 0, sizeof(modmap));
-        modifier_keymap = XGetModifierMapping(xnestDisplay);
+        KeySymsRec keySyms = {
+            .minKeyCode = min_keycode,
+            .maxKeyCode = max_keycode,
+            .mapWidth = keymap_reply->keysyms_per_keycode,
+            .map = xcb_get_keyboard_mapping_keysyms(keymap_reply),
+        };
+
+        xcb_generic_error_t *mod_err = NULL;
+        xcb_get_modifier_mapping_reply_t *mod_reply = xcb_get_modifier_mapping_reply(
+            xnestUpstreamInfo.conn,
+            xcb_get_modifier_mapping(xnestUpstreamInfo.conn),
+            &mod_err);
+
+        if (mod_err) {
+            free(keymap_reply);
+            ErrorF("Couldn't get keyboard modifier mapping: %d\n", mod_err->error_code);
+            goto XkbError;
+        }
+
+        if (!mod_reply) {
+            free(keymap_reply);
+            ErrorF("Couldn't get keyboard modifier mapping: no reply\n");
+            goto XkbError;
+        }
+
+        xcb_keycode_t *mod_keycodes = xcb_get_modifier_mapping_keycodes(mod_reply);
+        CARD8 modmap[MAP_LENGTH] = { 0 };
         for (j = 0; j < 8; j++)
-            for (i = 0; i < modifier_keymap->max_keypermod; i++) {
+            for (i = 0; i < mod_reply->keycodes_per_modifier; i++) {
                 CARD8 keycode;
 
                 if ((keycode =
-                     modifier_keymap->modifiermap[j *
-                                                  modifier_keymap->
-                                                  max_keypermod + i]))
+                     mod_keycodes[j * mod_reply->keycodes_per_modifier + i]))
                     modmap[keycode] |= 1 << j;
             }
-        XFreeModifiermap(modifier_keymap);
-
-        keySyms.minKeyCode = min_keycode;
-        keySyms.maxKeyCode = max_keycode;
-        keySyms.mapWidth = mapWidth;
-        keySyms.map = keymap;
-
-        if (XkbQueryExtension(xnestDisplay, &op, &event, &error, &major, &minor)
-            == 0) {
-            ErrorF("Unable to initialize XKEYBOARD extension.\n");
-            goto XkbError;
-        }
-        xkb =
-            XkbGetKeyboard(xnestDisplay, XkbGBN_AllComponentsMask,
-                           XkbUseCoreKbd);
-        if (xkb == NULL || xkb->geom == NULL) {
-            ErrorF("Couldn't get keyboard.\n");
-            goto XkbError;
-        }
-        XkbGetControls(xnestDisplay, XkbAllControlsMask, xkb);
 
         InitKeyboardDeviceStruct(pDev, NULL,
                                  xnestBell, xnestChangeKeyboardControl);
@@ -190,19 +162,80 @@ xnestKeyboardProc(DeviceIntPtr pDev, int onoff)
                               keySyms.maxKeyCode - keySyms.minKeyCode + 1,
                               modmap, serverClient);
 
-        XkbDDXChangeControls(pDev, xkb->ctrls, xkb->ctrls);
-        XkbFreeKeyboard(xkb, 0, False);
-        free(keymap);
+        free(keymap_reply);
+
+        xnestXkbInit(xnestUpstreamInfo.conn);
+
+        int device_id = xnestXkbDeviceId(xnestUpstreamInfo.conn);
+
+        xcb_generic_error_t *err = NULL;
+        xcb_xkb_get_controls_reply_t *reply = xcb_xkb_get_controls_reply(
+            xnestUpstreamInfo.conn,
+            xcb_xkb_get_controls(xnestUpstreamInfo.conn, device_id),
+            &err);
+
+        if (err) {
+            ErrorF("Couldn't get keyboard controls for %d: error %d\n", device_id, err->error_code);
+            free(err);
+            goto XkbError;
+        }
+
+        if (!reply) {
+            ErrorF("Couldn't get keyboard controls for %d: no reply", device_id);
+            goto XkbError;
+        }
+
+        XkbControlsRec ctrls = {
+            .mk_dflt_btn = reply->mouseKeysDfltBtn,
+            .num_groups = reply->numGroups,
+            .groups_wrap = reply->groupsWrap,
+            .internal = (XkbModsRec) {
+                .mask = reply->internalModsMask,
+                .real_mods = reply->internalModsRealMods,
+                .vmods = reply->internalModsVmods,
+            },
+            .ignore_lock = (XkbModsRec) {
+                .mask = reply->ignoreLockModsMask,
+                .real_mods = reply->ignoreLockModsRealMods,
+                .vmods = reply->ignoreLockModsVmods,
+            },
+            .enabled_ctrls = reply->enabledControls,
+            .repeat_delay = reply->repeatDelay,
+            .repeat_interval = reply->repeatInterval,
+            .slow_keys_delay = reply->slowKeysDelay,
+            .debounce_delay = reply->debounceDelay,
+            .mk_delay = reply->mouseKeysDelay,
+            .mk_interval = reply->mouseKeysInterval,
+            .mk_time_to_max = reply->mouseKeysTimeToMax,
+            .mk_max_speed = reply->mouseKeysMaxSpeed,
+            .mk_curve = reply->mouseKeysCurve,
+            .ax_options = reply->accessXOption,
+            .ax_timeout = reply->accessXTimeout,
+            .axt_opts_mask = reply->accessXTimeoutOptionsMask,
+            .axt_opts_values = reply->accessXTimeoutOptionsValues,
+            .axt_ctrls_mask = reply->accessXTimeoutMask,
+            .axt_ctrls_values = reply->accessXTimeoutValues,
+        };
+        memcpy(&ctrls.per_key_repeat, reply->perKeyRepeat, sizeof(ctrls.per_key_repeat));
+
+        XkbDDXChangeControls(pDev, &ctrls, &ctrls);
         break;
+    }
     case DEVICE_ON:
         xnestEventMask |= XNEST_KEYBOARD_EVENT_MASK;
         for (i = 0; i < xnestNumScreens; i++)
-            XSelectInput(xnestDisplay, xnestDefaultWindows[i], xnestEventMask);
+            xcb_change_window_attributes(xnestUpstreamInfo.conn,
+                                         xnestDefaultWindows[i],
+                                         XCB_CW_EVENT_MASK,
+                                         &xnestEventMask);
         break;
     case DEVICE_OFF:
         xnestEventMask &= ~XNEST_KEYBOARD_EVENT_MASK;
         for (i = 0; i < xnestNumScreens; i++)
-            XSelectInput(xnestDisplay, xnestDefaultWindows[i], xnestEventMask);
+            xcb_change_window_attributes(xnestUpstreamInfo.conn,
+                                         xnestDefaultWindows[i],
+                                         XCB_CW_EVENT_MASK,
+                                         &xnestEventMask);
         break;
     case DEVICE_CLOSE:
         break;
@@ -210,12 +243,28 @@ xnestKeyboardProc(DeviceIntPtr pDev, int onoff)
     return Success;
 
 XkbError:
-    XGetKeyboardControl(xnestDisplay, &values);
-    memmove((char *) defaultKeyboardControl.autoRepeats,
-            (char *) values.auto_repeats, sizeof(values.auto_repeats));
+    {
+        xcb_generic_error_t *ctrl_err = NULL;
+        xcb_get_keyboard_control_reply_t *ctrl_reply =
+            xcb_get_keyboard_control_reply(xnestUpstreamInfo.conn,
+                                           xcb_get_keyboard_control(xnestUpstreamInfo.conn),
+                                           &ctrl_err);
+        if (ctrl_err) {
+            ErrorF("failed retrieving keyboard control: %d\n", ctrl_err->error_code);
+            free(ctrl_err);
+        }
+        else if (!ctrl_reply) {
+            ErrorF("failed retrieving keyboard control: no reply\n");
+        }
+        else {
+            memcpy(defaultKeyboardControl.autoRepeats,
+                   ctrl_reply->auto_repeats,
+                   sizeof(ctrl_reply->auto_repeats));
+            free(ctrl_reply);
+        }
+    }
 
     InitKeyboardDeviceStruct(pDev, NULL, xnestBell, xnestChangeKeyboardControl);
-    free(keymap);
     return Success;
 }
 

hw/xnest/Keyboard.h

@@ -16,7 +16,8 @@ is" without express or implied warranty.
 #define XNESTKEYBOARD_H
 
 #define XNEST_KEYBOARD_EVENT_MASK \
-        (KeyPressMask | KeyReleaseMask | FocusChangeMask | KeymapStateMask)
+        (XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE | \
+         XCB_EVENT_MASK_FOCUS_CHANGE | XCB_EVENT_MASK_KEYMAP_STATE)
 
 extern DeviceIntPtr xnestKeyboardDevice;
 

hw/xnest/Pixmap.c

@@ -28,7 +28,7 @@ is" without express or implied warranty.
 #include "privates.h"
 #include "mi.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Screen.h"
@@ -59,11 +59,12 @@ xnestCreatePixmap(ScreenPtr pScreen, int width, int height, int depth,
     pPixmap->refcnt = 1;
     pPixmap->devKind = PixmapBytePad(width, depth);
     pPixmap->usage_hint = usage_hint;
-    if (width && height)
-        xnestPixmapPriv(pPixmap)->pixmap =
-            XCreatePixmap(xnestDisplay,
-                          xnestDefaultWindows[pScreen->myNum],
-                          width, height, depth);
+    if (width && height) {
+        uint32_t pixmap = xcb_generate_id(xnestUpstreamInfo.conn);
+        xcb_create_pixmap(xnestUpstreamInfo.conn, depth, pixmap,
+                          xnestDefaultWindows[pScreen->myNum], width, height);
+        xnestPixmapPriv(pPixmap)->pixmap = pixmap;
+    }
     else
         xnestPixmapPriv(pPixmap)->pixmap = 0;
 
@@ -75,7 +76,7 @@ xnestDestroyPixmap(PixmapPtr pPixmap)
 {
     if (--pPixmap->refcnt)
         return TRUE;
-    XFreePixmap(xnestDisplay, xnestPixmap(pPixmap));
+    xcb_free_pixmap(xnestUpstreamInfo.conn, xnestPixmap(pPixmap));
     FreePixmap(pPixmap);
     return TRUE;
 }
@@ -85,10 +86,11 @@ xnestModifyPixmapHeader(PixmapPtr pPixmap, int width, int height, int depth,
                         int bitsPerPixel, int devKind, void *pPixData)
 {
   if(!xnestPixmapPriv(pPixmap)->pixmap && width > 0 && height > 0) {
-    xnestPixmapPriv(pPixmap)->pixmap =
-        XCreatePixmap(xnestDisplay,
+        uint32_t pixmap = xcb_generate_id(xnestUpstreamInfo.conn);
+        xcb_create_pixmap(xnestUpstreamInfo.conn, depth, pixmap,
                           xnestDefaultWindows[pPixmap->drawable.pScreen->myNum],
-                      width, height, depth);
+                          width, height);
+        xnestPixmapPriv(pPixmap)->pixmap = pixmap;
   }
 
   return miModifyPixmapHeader(pPixmap, width, height, depth,
@@ -98,30 +100,60 @@ xnestModifyPixmapHeader(PixmapPtr pPixmap, int width, int height, int depth,
 RegionPtr
 xnestPixmapToRegion(PixmapPtr pPixmap)
 {
-    XImage *ximage;
     register RegionPtr pReg, pTmpReg;
     register int x, y;
     unsigned long previousPixel, currentPixel;
     BoxRec Box = { 0, 0, 0, 0 };
     Bool overlap;
 
-    ximage = XGetImage(xnestDisplay, xnestPixmap(pPixmap), 0, 0,
-                       pPixmap->drawable.width, pPixmap->drawable.height,
-                       1, XYPixmap);
+    if (pPixmap->drawable.depth != 1) {
+        LogMessage(X_WARNING, "xnestPixmapToRegion() depth != 1: %d\n", pPixmap->drawable.depth);
+        return NULL;
+    }
+
+    xcb_generic_error_t *err = NULL;
+    xcb_get_image_reply_t *reply = xcb_get_image_reply(
+        xnestUpstreamInfo.conn,
+        xcb_get_image(
+            xnestUpstreamInfo.conn,
+            XCB_IMAGE_FORMAT_XY_PIXMAP,
+            xnestPixmap(pPixmap),
+            0,
+            0,
+            pPixmap->drawable.width,
+            pPixmap->drawable.height,
+            ~0),
+        &err);
+
+    if (err) {
+        //  badMatch may happeen if the upstream window is currently minimized
+        if (err->error_code != BadMatch)
+            ErrorF("xnestGetImage: received error %d\n", err->error_code);
+        free(err);
+        return NULL;
+    }
+
+    if (!reply) {
+        ErrorF("xnestGetImage: received no reply\n");
+        return NULL;
+    }
 
     pReg = RegionCreate(NULL, 1);
     pTmpReg = RegionCreate(NULL, 1);
     if (!pReg || !pTmpReg) {
-        XDestroyImage(ximage);
+        free(reply);
         return NullRegion;
     }
 
+    uint8_t *image_data = xcb_get_image_data(reply);
     for (y = 0; y < pPixmap->drawable.height; y++) {
         Box.y1 = y;
         Box.y2 = y + 1;
         previousPixel = 0L;
+        const int line_start = BitmapBytePad(pPixmap->drawable.width) * y;
+
         for (x = 0; x < pPixmap->drawable.width; x++) {
-            currentPixel = XGetPixel(ximage, x, y);
+            currentPixel = ((image_data[line_start + (x/8)]) >> (x % 8)) & 1;
             if (previousPixel != currentPixel) {
                 if (previousPixel == 0L) {
                     /* left edge */
@@ -145,7 +177,7 @@ xnestPixmapToRegion(PixmapPtr pPixmap)
     }
 
     RegionDestroy(pTmpReg);
-    XDestroyImage(ximage);
+    free(reply);
 
     RegionValidate(pReg, &overlap);
 

hw/xnest/Pointer.c

@@ -26,7 +26,7 @@ is" without express or implied warranty.
 #include "servermd.h"
 #include "mipointer.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Screen.h"
@@ -41,25 +41,24 @@ DeviceIntPtr xnestPointerDevice = NULL;
 void
 xnestChangePointerControl(DeviceIntPtr pDev, PtrCtrl * ctrl)
 {
-    XChangePointerControl(xnestDisplay, True, True,
-                          ctrl->num, ctrl->den, ctrl->threshold);
+    xcb_change_pointer_control(xnestUpstreamInfo.conn,
+                               ctrl->num,
+                               ctrl->den,
+                               ctrl->threshold,
+                               TRUE,
+                               TRUE);
 }
 
 int
 xnestPointerProc(DeviceIntPtr pDev, int onoff)
 {
-    CARD8 map[MAXBUTTONS];
     Atom btn_labels[MAXBUTTONS] = { 0 };
     Atom axes_labels[2] = { 0 };
-    int nmap;
     int i;
 
     switch (onoff) {
     case DEVICE_INIT:
-        nmap = XGetPointerMapping(xnestDisplay, map, MAXBUTTONS);
-        for (i = 0; i <= nmap; i++)
-            map[i] = i;         /* buttons are already mapped */
-
+    {
         btn_labels[0] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_LEFT);
         btn_labels[1] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_MIDDLE);
         btn_labels[2] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_RIGHT);
@@ -71,23 +70,57 @@ xnestPointerProc(DeviceIntPtr pDev, int onoff)
         axes_labels[0] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_X);
         axes_labels[1] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_Y);
 
-        XGetPointerControl(xnestDisplay,
+        xnestGetPointerControl(xnestUpstreamInfo.conn,
                                &defaultPointerControl.num,
                                &defaultPointerControl.den,
                                &defaultPointerControl.threshold);
-        InitPointerDeviceStruct(&pDev->public, map, nmap, btn_labels,
+
+        xcb_generic_error_t *pm_err = NULL;
+        xcb_get_pointer_mapping_reply_t *pm_reply =
+            xcb_get_pointer_mapping_reply(
+                xnestUpstreamInfo.conn,
+                xcb_get_pointer_mapping(xnestUpstreamInfo.conn),
+                &pm_err);
+        if (pm_err) {
+            ErrorF("failed getting pointer mapping %d\n", pm_err->error_code);
+            free(pm_err);
+            break;
+        }
+
+        if (!pm_reply) {
+            ErrorF("failed getting pointer mapping: no reply\n");
+            break;
+        }
+
+        const int nmap = xcb_get_pointer_mapping_map_length(pm_reply);
+        uint8_t *map = xcb_get_pointer_mapping_map(pm_reply);
+        for (i=0; i<nmap; i++)
+            map[i] = i;         /* buttons are already mapped */
+
+        InitPointerDeviceStruct(&pDev->public,
+                                map,
+                                nmap,
+                                btn_labels,
                                 xnestChangePointerControl,
                                 GetMotionHistorySize(), 2, axes_labels);
+        free(pm_reply);
         break;
+    }
     case DEVICE_ON:
         xnestEventMask |= XNEST_POINTER_EVENT_MASK;
         for (i = 0; i < xnestNumScreens; i++)
-            XSelectInput(xnestDisplay, xnestDefaultWindows[i], xnestEventMask);
+            xcb_change_window_attributes(xnestUpstreamInfo.conn,
+                                         xnestDefaultWindows[i],
+                                         XCB_CW_EVENT_MASK,
+                                         &xnestEventMask);
         break;
     case DEVICE_OFF:
         xnestEventMask &= ~XNEST_POINTER_EVENT_MASK;
         for (i = 0; i < xnestNumScreens; i++)
-            XSelectInput(xnestDisplay, xnestDefaultWindows[i], xnestEventMask);
+            xcb_change_window_attributes(xnestUpstreamInfo.conn,
+                                         xnestDefaultWindows[i],
+                                         XCB_CW_EVENT_MASK,
+                                         &xnestEventMask);
         break;
     case DEVICE_CLOSE:
         break;

hw/xnest/Screen.c

@@ -20,6 +20,8 @@ is" without express or implied warranty.
 #include <X11/Xdefs.h>
 #include <X11/Xproto.h>
 
+#include <xcb/xcb_icccm.h>
+
 #include "mi/mi_priv.h"
 
 #include "scrnintstr.h"
@@ -29,7 +31,7 @@ is" without express or implied warranty.
 #include "colormapst.h"
 #include "resource.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Screen.h"
@@ -39,7 +41,6 @@ is" without express or implied warranty.
 #include "XNFont.h"
 #include "Color.h"
 #include "XNCursor.h"
-#include "Visual.h"
 #include "Events.h"
 #include "Init.h"
 #include "mipointer.h"
@@ -78,31 +79,36 @@ static Bool
 xnestSaveScreen(ScreenPtr pScreen, int what)
 {
     if (xnestSoftwareScreenSaver)
-        return False;
+        return FALSE;
     else {
         switch (what) {
         case SCREEN_SAVER_ON:
-            XMapRaised(xnestDisplay, xnestScreenSaverWindows[pScreen->myNum]);
+            xcb_map_window(xnestUpstreamInfo.conn, xnestScreenSaverWindows[pScreen->myNum]);
+            uint32_t value = XCB_STACK_MODE_ABOVE;
+            xcb_configure_window(xnestUpstreamInfo.conn,
+                                 xnestScreenSaverWindows[pScreen->myNum],
+                                 XCB_CONFIG_WINDOW_STACK_MODE,
+                                 &value);
             xnestSetScreenSaverColormapWindow(pScreen);
             break;
 
         case SCREEN_SAVER_OFF:
-            XUnmapWindow(xnestDisplay, xnestScreenSaverWindows[pScreen->myNum]);
+            xcb_unmap_window(xnestUpstreamInfo.conn, xnestScreenSaverWindows[pScreen->myNum]);
             xnestSetInstalledColormapWindows(pScreen);
             break;
 
         case SCREEN_SAVER_FORCER:
             lastEventTime = GetTimeInMillis();
-            XUnmapWindow(xnestDisplay, xnestScreenSaverWindows[pScreen->myNum]);
+            xcb_unmap_window(xnestUpstreamInfo.conn, xnestScreenSaverWindows[pScreen->myNum]);
             xnestSetInstalledColormapWindows(pScreen);
             break;
 
         case SCREEN_SAVER_CYCLE:
-            XUnmapWindow(xnestDisplay, xnestScreenSaverWindows[pScreen->myNum]);
+            xcb_unmap_window(xnestUpstreamInfo.conn, xnestScreenSaverWindows[pScreen->myNum]);
             xnestSetInstalledColormapWindows(pScreen);
             break;
         }
-        return True;
+        return TRUE;
     }
 }
 
@@ -132,17 +138,39 @@ static miPointerSpriteFuncRec xnestPointerSpriteFuncs = {
     xnestDeviceCursorCleanup
 };
 
+static int addDepthVisual(DepthPtr depths, int numDepths, int nplanes, VisualID vid)
+{
+    DepthPtr walk = NULL;
+
+    for (int j = 0; j < numDepths; j++)
+        if (depths[j].depth == nplanes) {
+            walk = &depths[j];
+            break;
+        }
+
+    if (!walk) {
+        walk = &depths[numDepths++];
+        walk->depth = nplanes;
+        walk->numVids = 0;
+        walk->vids = (VisualID *) malloc(MAXVISUALSPERDEPTH * sizeof(VisualID));
+    }
+    if (walk->numVids >= MAXVISUALSPERDEPTH) {
+        FatalError("Visual table overflow");
+    }
+    walk->vids[walk->numVids] = vid;
+    walk->numVids++;
+
+    return numDepths;
+}
+
 Bool
 xnestOpenScreen(ScreenPtr pScreen, int argc, char *argv[])
 {
     VisualPtr visuals;
     DepthPtr depths;
     int numVisuals, numDepths;
-    int i, j, depthIndex;
+    int j;
     unsigned long valuemask;
-    XSetWindowAttributes attributes;
-    XWindowAttributes gattributes;
-    XSizeHints sizeHints;
     VisualID defaultVisual;
     int rootDepth;
     miPointerScreenPtr PointPriv;
@@ -167,96 +195,128 @@ xnestOpenScreen(ScreenPtr pScreen, int argc, char *argv[])
                                      PRIVATE_CURSOR, 0))
         return FALSE;
 
-    visuals = xallocarray(xnestNumVisuals, sizeof(VisualRec));
+    visuals = xallocarray(1, sizeof(VisualRec));
     numVisuals = 0;
 
+    if (!xnestVisualMap)
+        xnestVisualMap = calloc(1, sizeof(XnestVisualRec));
+    else
+        xnestVisualMap = reallocarray(xnestVisualMap, xnestNumVisualMap+1, sizeof(XnestVisualRec));
+
     depths = (DepthPtr) malloc(MAXDEPTH * sizeof(DepthRec));
     depths[0].depth = 1;
     depths[0].numVids = 0;
     depths[0].vids = (VisualID *) malloc(MAXVISUALSPERDEPTH * sizeof(VisualID));
     numDepths = 1;
 
-    for (i = 0; i < xnestNumVisuals; i++) {
-        visuals[numVisuals].class = xnestVisuals[i].class;
-        visuals[numVisuals].bitsPerRGBValue = xnestVisuals[i].bits_per_rgb;
-        visuals[numVisuals].ColormapEntries = xnestVisuals[i].colormap_size;
-        visuals[numVisuals].nplanes = xnestVisuals[i].depth;
-        visuals[numVisuals].redMask = xnestVisuals[i].red_mask;
-        visuals[numVisuals].greenMask = xnestVisuals[i].green_mask;
-        visuals[numVisuals].blueMask = xnestVisuals[i].blue_mask;
-        visuals[numVisuals].offsetRed = offset(xnestVisuals[i].red_mask);
-        visuals[numVisuals].offsetGreen = offset(xnestVisuals[i].green_mask);
-        visuals[numVisuals].offsetBlue = offset(xnestVisuals[i].blue_mask);
-
-        /* Check for and remove duplicates. */
+    int found_default_visual = 0;
+    xcb_depth_iterator_t depth_iter;
+    for (depth_iter = xcb_screen_allowed_depths_iterator(xnestUpstreamInfo.screenInfo);
+         depth_iter.rem;
+         xcb_depth_next(&depth_iter))
+    {
+        int vlen = xcb_depth_visuals_length (depth_iter.data);
+        xcb_visualtype_t *vts = xcb_depth_visuals (depth_iter.data);
+        for (int x=0; x<vlen; x++) {
             for (j = 0; j < numVisuals; j++) {
-            if (visuals[numVisuals].class == visuals[j].class &&
-                visuals[numVisuals].bitsPerRGBValue ==
-                visuals[j].bitsPerRGBValue &&
-                visuals[numVisuals].ColormapEntries ==
-                visuals[j].ColormapEntries &&
-                visuals[numVisuals].nplanes == visuals[j].nplanes &&
-                visuals[numVisuals].redMask == visuals[j].redMask &&
-                visuals[numVisuals].greenMask == visuals[j].greenMask &&
-                visuals[numVisuals].blueMask == visuals[j].blueMask &&
-                visuals[numVisuals].offsetRed == visuals[j].offsetRed &&
-                visuals[numVisuals].offsetGreen == visuals[j].offsetGreen &&
-                visuals[numVisuals].offsetBlue == visuals[j].offsetBlue)
-                break;
-        }
-        if (j < numVisuals)
-            break;
-
-        visuals[numVisuals].vid = FakeClientID(0);
-
-        depthIndex = UNDEFINED;
-        for (j = 0; j < numDepths; j++)
-            if (depths[j].depth == xnestVisuals[i].depth) {
-                depthIndex = j;
-                break;
+                if (vts[x]._class == visuals[j].class &&
+                    vts[x].bits_per_rgb_value == visuals[j].bitsPerRGBValue &&
+                    vts[x].colormap_entries == visuals[j].ColormapEntries &&
+                    depth_iter.data->depth == visuals[j].nplanes &&
+                    vts[x].red_mask == visuals[j].redMask &&
+                    vts[x].green_mask == visuals[j].greenMask &&
+                    vts[x].blue_mask == visuals[j].blueMask &&
+                    offset(vts[x].red_mask) == visuals[j].offsetRed &&
+                    offset(vts[x].green_mask) == visuals[j].offsetGreen &&
+                    offset(vts[x].blue_mask) == visuals[j].offsetBlue)
+                        goto breakout;
             }
 
-        if (depthIndex == UNDEFINED) {
-            depthIndex = numDepths;
-            depths[depthIndex].depth = xnestVisuals[i].depth;
-            depths[depthIndex].numVids = 0;
-            depths[depthIndex].vids =
-                (VisualID *) malloc(MAXVISUALSPERDEPTH * sizeof(VisualID));
-            numDepths++;
+            visuals[numVisuals] = (VisualRec) {
+                .class = vts[x]._class,
+                .bitsPerRGBValue = vts[x].bits_per_rgb_value,
+                .ColormapEntries = vts[x].colormap_entries,
+                .nplanes = depth_iter.data->depth,
+                .redMask = vts[x].red_mask,
+                .greenMask = vts[x].green_mask,
+                .blueMask = vts[x].blue_mask,
+                .offsetRed = offset(vts[x].red_mask),
+                .offsetGreen = offset(vts[x].green_mask),
+                .offsetBlue = offset(vts[x].blue_mask),
+                .vid = FakeClientID(0),
+            };
+
+            xnestVisualMap[xnestNumVisualMap] = (XnestVisualRec) {
+                .ourXID = visuals[numVisuals].vid,
+                .ourVisual = &visuals[numVisuals],
+                .upstreamDepth = depth_iter.data,
+                .upstreamVisual = &vts[x],
+                .upstreamCMap = xcb_generate_id(xnestUpstreamInfo.conn),
+            };
+
+            xcb_create_colormap(xnestUpstreamInfo.conn,
+                                XCB_COLORMAP_ALLOC_NONE,
+                                xnestVisualMap[xnestNumVisualMap].upstreamCMap,
+                                xnestUpstreamInfo.screenInfo->root,
+                                xnestVisualMap[xnestNumVisualMap].upstreamVisual->visual_id);
+
+            numDepths = addDepthVisual(depths, numDepths, visuals[numVisuals].nplanes, visuals[numVisuals].vid);
+
+            if (xnestUserDefaultClass || xnestUserDefaultDepth) {
+                if ((!xnestDefaultClass || visuals[numVisuals].class == xnestDefaultClass) &&
+                    (!xnestDefaultDepth || visuals[numVisuals].nplanes == xnestDefaultDepth))
+                {
+                    defaultVisual = visuals[numVisuals].vid;
+                    rootDepth = visuals[numVisuals].nplanes;
+                    found_default_visual = 1;
+                }
+            }
+            else
+            {
+                VisualID visual_id = xnestUpstreamInfo.screenInfo->root_visual;
+                if (visual_id == vts[x].visual_id) {
+                    defaultVisual = visuals[numVisuals].vid;
+                    rootDepth = visuals[numVisuals].nplanes;
+                    found_default_visual = 1;
                 }
-        if (depths[depthIndex].numVids >= MAXVISUALSPERDEPTH) {
-            FatalError("Visual table overflow");
             }
-        depths[depthIndex].vids[depths[depthIndex].numVids] =
-            visuals[numVisuals].vid;
-        depths[depthIndex].numVids++;
 
             numVisuals++;
+            xnestNumVisualMap++;
+            visuals = reallocarray(visuals, numVisuals+1, sizeof(VisualRec));
+            xnestVisualMap = reallocarray(xnestVisualMap, xnestNumVisualMap+1, sizeof(XnestVisualRec));
         }
+    }
+breakout:
     visuals = reallocarray(visuals, numVisuals, sizeof(VisualRec));
+    xnestVisualMap = reallocarray(xnestVisualMap, xnestNumVisualMap, sizeof(XnestVisualRec));
 
-    defaultVisual = visuals[xnestDefaultVisualIndex].vid;
-    rootDepth = visuals[xnestDefaultVisualIndex].nplanes;
+    if (!found_default_visual) {
+        ErrorF("Xnest: can't find matching visual for user specified depth %d\n", xnestDefaultDepth);
+        defaultVisual = visuals[0].vid;
+        rootDepth = visuals[0].nplanes;
+    }
 
     if (xnestParentWindow != 0) {
-        XGetWindowAttributes(xnestDisplay, xnestParentWindow, &gattributes);
-        xnestWidth = gattributes.width;
-        xnestHeight = gattributes.height;
+        xRectangle r = xnestGetGeometry(xnestUpstreamInfo.conn, xnestParentWindow);
+        xnestGeometry.width = r.width;
+        xnestGeometry.height = r.height;
     }
 
     /* myNum */
     /* id */
-    if (!miScreenInit(pScreen, NULL, xnestWidth, xnestHeight, 1, 1, xnestWidth, rootDepth, numDepths, depths, defaultVisual, /* root visual */
+    if (!miScreenInit(pScreen, NULL, xnestGeometry.width, xnestGeometry.height,
+                      1, 1, xnestGeometry.width, rootDepth, numDepths, depths, defaultVisual, /* root visual */
                       numVisuals, visuals))
         return FALSE;
 
     pScreen->defColormap = (Colormap) FakeClientID(0);
     pScreen->minInstalledCmaps = MINCMAPS;
     pScreen->maxInstalledCmaps = MAXCMAPS;
-    pScreen->backingStoreSupport = NotUseful;
-    pScreen->saveUnderSupport = NotUseful;
-    pScreen->whitePixel = xnestWhitePixel;
-    pScreen->blackPixel = xnestBlackPixel;
+    pScreen->backingStoreSupport = XCB_BACKING_STORE_NOT_USEFUL;
+    pScreen->saveUnderSupport = XCB_BACKING_STORE_NOT_USEFUL;
+    pScreen->whitePixel = xnestUpstreamInfo.screenInfo->white_pixel;
+    pScreen->blackPixel = xnestUpstreamInfo.screenInfo->black_pixel;
     /* GCperDepth */
     /* defaultStipple */
     /* WindowPrivateLen */
@@ -282,9 +342,10 @@ xnestOpenScreen(ScreenPtr pScreen, int argc, char *argv[])
     pScreen->RealizeWindow = xnestRealizeWindow;
     pScreen->UnrealizeWindow = xnestUnrealizeWindow;
     pScreen->PostValidateTree = NULL;
-    pScreen->WindowExposures = xnestWindowExposures;
+    pScreen->WindowExposures = miWindowExposures;
     pScreen->CopyWindow = xnestCopyWindow;
     pScreen->ClipNotify = xnestClipNotify;
+    pScreen->ClearToBackground = xnestClearToBackground;
 
     /* Pixmap procedures */
 
@@ -325,13 +386,12 @@ xnestOpenScreen(ScreenPtr pScreen, int argc, char *argv[])
                   &xnestCursorFuncs);
     PointPriv->spriteFuncs = &xnestPointerSpriteFuncs;
 
-    pScreen->mmWidth = xnestWidth * DisplayWidthMM(xnestDisplay,
-                                                   DefaultScreen(xnestDisplay))
-        / DisplayWidth(xnestDisplay, DefaultScreen(xnestDisplay));
+    pScreen->mmWidth =
+        xnestGeometry.width * xnestUpstreamInfo.screenInfo->width_in_millimeters /
+        xnestUpstreamInfo.screenInfo->width_in_pixels;
     pScreen->mmHeight =
-        xnestHeight * DisplayHeightMM(xnestDisplay,
-                                      DefaultScreen(xnestDisplay)) /
-        DisplayHeight(xnestDisplay, DefaultScreen(xnestDisplay));
+        xnestGeometry.height * xnestUpstreamInfo.screenInfo->height_in_millimeters /
+        xnestUpstreamInfo.screenInfo->height_in_pixels;
 
     /* overwrite miCloseScreen with our own */
     pScreen->CloseScreen = xnestCloseScreen;
@@ -341,74 +401,123 @@ xnestOpenScreen(ScreenPtr pScreen, int argc, char *argv[])
 
     /* devPrivates */
 
-#define POSITION_OFFSET (pScreen->myNum * (xnestWidth + xnestHeight) / 32)
+#define POSITION_OFFSET (pScreen->myNum * (xnestGeometry.width + xnestGeometry.height) / 32)
 
     if (xnestDoFullGeneration) {
 
-        valuemask = CWBackPixel | CWEventMask | CWColormap;
-        attributes.background_pixel = xnestWhitePixel;
-        attributes.event_mask = xnestEventMask;
-        attributes.colormap =
-            xnestDefaultVisualColormap(xnestDefaultVisual(pScreen));
+        XnSetWindowAttr attributes = {
+            .background_pixel = xnestUpstreamInfo.screenInfo->white_pixel,
+            .event_mask = xnestEventMask,
+            .colormap = xnestVisualToHostCmap(pScreen->rootVisual),
+        };
+
+        valuemask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK | XCB_CW_COLORMAP;
 
         if (xnestParentWindow != 0) {
             xnestDefaultWindows[pScreen->myNum] = xnestParentWindow;
-            XSelectInput(xnestDisplay, xnestDefaultWindows[pScreen->myNum],
-                         xnestEventMask);
+            xcb_change_window_attributes(xnestUpstreamInfo.conn,
+                                         xnestDefaultWindows[pScreen->myNum],
+                                         XCB_CW_EVENT_MASK,
+                                         &xnestEventMask);
         }
-        else
-            xnestDefaultWindows[pScreen->myNum] =
-                XCreateWindow(xnestDisplay,
-                              DefaultRootWindow(xnestDisplay),
-                              xnestX + POSITION_OFFSET,
-                              xnestY + POSITION_OFFSET,
-                              xnestWidth, xnestHeight,
-                              xnestBorderWidth,
+        else {
+            uint32_t values[32] = { 0 };
+            xnest_encode_window_attr(attributes, valuemask, values);
+
+            xnestDefaultWindows[pScreen->myNum] = xcb_generate_id(xnestUpstreamInfo.conn);
+            xcb_create_window(xnestUpstreamInfo.conn,
                               pScreen->rootDepth,
-                              InputOutput,
-                              xnestDefaultVisual(pScreen),
-                              valuemask, &attributes);
+                              xnestDefaultWindows[pScreen->myNum],
+                              xnestUpstreamInfo.screenInfo->root,
+                              xnestGeometry.x + POSITION_OFFSET,
+                              xnestGeometry.y + POSITION_OFFSET,
+                              xnestGeometry.width,
+                              xnestGeometry.height,
+                              xnestBorderWidth,
+                              XCB_WINDOW_CLASS_INPUT_OUTPUT,
+                              xnest_visual_map_to_host(pScreen->rootVisual),
+                              valuemask,
+                              values);
+        }
 
         if (!xnestWindowName)
             xnestWindowName = argv[0];
 
-        sizeHints.flags = PPosition | PSize | PMaxSize;
-        sizeHints.x = xnestX + POSITION_OFFSET;
-        sizeHints.y = xnestY + POSITION_OFFSET;
-        sizeHints.width = sizeHints.max_width = xnestWidth;
-        sizeHints.height = sizeHints.max_height = xnestHeight;
-        if (xnestUserGeometry & XValue || xnestUserGeometry & YValue)
-            sizeHints.flags |= USPosition;
-        if (xnestUserGeometry & WidthValue || xnestUserGeometry & HeightValue)
-            sizeHints.flags |= USSize;
-        XSetStandardProperties(xnestDisplay,
+        xcb_size_hints_t sizeHints = {
+            .flags = XCB_ICCCM_SIZE_HINT_P_POSITION | XCB_ICCCM_SIZE_HINT_P_SIZE | XCB_ICCCM_SIZE_HINT_P_MAX_SIZE,
+            .x = xnestGeometry.x + POSITION_OFFSET,
+            .y = xnestGeometry.y + POSITION_OFFSET,
+            .width = xnestGeometry.width,
+            .height = xnestGeometry.height,
+            .max_width = xnestGeometry.width,
+            .max_height = xnestGeometry.height,
+        };
+
+        if (xnestUserGeometry & XCB_CONFIG_WINDOW_X ||
+            xnestUserGeometry & XCB_CONFIG_WINDOW_Y)
+            sizeHints.flags |= XCB_ICCCM_SIZE_HINT_US_POSITION;
+        if (xnestUserGeometry & XCB_CONFIG_WINDOW_WIDTH ||
+            xnestUserGeometry & XCB_CONFIG_WINDOW_HEIGHT)
+            sizeHints.flags |= XCB_ICCCM_SIZE_HINT_US_SIZE;
+
+        const size_t windowNameLen = strlen(xnestWindowName);
+
+        xcb_icccm_set_wm_name_checked(xnestUpstreamInfo.conn,
                                       xnestDefaultWindows[pScreen->myNum],
-                               xnestWindowName,
-                               xnestWindowName,
-                               xnestIconBitmap, argv, argc, &sizeHints);
+                                      XCB_ATOM_STRING,
+                                      8,
+                                      windowNameLen,
+                                      xnestWindowName);
 
-        XMapWindow(xnestDisplay, xnestDefaultWindows[pScreen->myNum]);
+        xcb_icccm_set_wm_icon_name_checked(xnestUpstreamInfo.conn,
+                                           xnestDefaultWindows[pScreen->myNum],
+                                           XCB_ATOM_STRING,
+                                           8,
+                                           windowNameLen,
+                                           xnestWindowName);
 
-        valuemask = CWBackPixmap | CWColormap;
+        xnestSetCommand(xnestUpstreamInfo.conn,
+                        xnestDefaultWindows[pScreen->myNum],
+                        argv, argc);
+
+        xcb_icccm_wm_hints_t wmhints = {
+            .icon_pixmap = xnestIconBitmap,
+            .flags = XCB_ICCCM_WM_HINT_ICON_PIXMAP,
+        };
+
+        xcb_icccm_set_wm_hints_checked(xnestUpstreamInfo.conn,
+                                       xnestDefaultWindows[pScreen->myNum],
+                                       &wmhints);
+
+        xcb_map_window(xnestUpstreamInfo.conn, xnestDefaultWindows[pScreen->myNum]);
+
+        valuemask = XCB_CW_BACK_PIXMAP | XCB_CW_COLORMAP;
         attributes.background_pixmap = xnestScreenSaverPixmap;
-        attributes.colormap =
-            DefaultColormap(xnestDisplay, DefaultScreen(xnestDisplay));
-        xnestScreenSaverWindows[pScreen->myNum] =
-            XCreateWindow(xnestDisplay,
+        attributes.colormap = xnestUpstreamInfo.screenInfo->default_colormap;
+
+        uint32_t values[32] = { 0 };
+        xnest_encode_window_attr(attributes, valuemask, values);
+
+        xnestScreenSaverWindows[pScreen->myNum] = xcb_generate_id(xnestUpstreamInfo.conn);
+        xcb_create_window(xnestUpstreamInfo.conn,
+                          xnestUpstreamInfo.screenInfo->root_depth,
+                          xnestScreenSaverWindows[pScreen->myNum],
                           xnestDefaultWindows[pScreen->myNum],
-                          0, 0, xnestWidth, xnestHeight, 0,
-                          DefaultDepth(xnestDisplay,
-                                       DefaultScreen(xnestDisplay)),
-                          InputOutput, DefaultVisual(xnestDisplay,
-                                                     DefaultScreen
-                                                     (xnestDisplay)), valuemask,
-                          &attributes);
+                          0,
+                          0,
+                          xnestGeometry.width,
+                          xnestGeometry.height,
+                          0,
+                          XCB_WINDOW_CLASS_INPUT_OUTPUT,
+                          xnestUpstreamInfo.screenInfo->root_visual,
+                          valuemask,
+                          values);
     }
 
     if (!xnestCreateDefaultColormap(pScreen))
-        return False;
+        return FALSE;
 
-    return True;
+    return TRUE;
 }
 
 Bool
@@ -427,5 +536,5 @@ xnestCloseScreen(ScreenPtr pScreen)
        the display connection.  There is no need to generate extra protocol.
      */
 
-    return True;
+    return TRUE;
 }

hw/xnest/Visual.c

@@ -1,69 +0,0 @@
-/*
-
-Copyright 1993 by Davor Matic
-
-Permission to use, copy, modify, distribute, and sell this software
-and its documentation for any purpose is hereby granted without fee,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation.  Davor Matic makes no representations about
-the suitability of this software for any purpose.  It is provided "as
-is" without express or implied warranty.
-
-*/
-
-#ifdef HAVE_XNEST_CONFIG_H
-#include <xnest-config.h>
-#endif
-
-#include <X11/X.h>
-#include <X11/Xproto.h>
-#include "scrnintstr.h"
-#include "dix.h"
-#include "mi.h"
-#include "Xnest.h"
-
-#include "Display.h"
-#include "Visual.h"
-
-Visual *
-xnestVisual(VisualPtr pVisual)
-{
-    int i;
-
-    for (i = 0; i < xnestNumVisuals; i++)
-        if (pVisual->class == xnestVisuals[i].class &&
-            pVisual->bitsPerRGBValue == xnestVisuals[i].bits_per_rgb &&
-            pVisual->ColormapEntries == xnestVisuals[i].colormap_size &&
-            pVisual->nplanes == xnestVisuals[i].depth &&
-            pVisual->redMask == xnestVisuals[i].red_mask &&
-            pVisual->greenMask == xnestVisuals[i].green_mask &&
-            pVisual->blueMask == xnestVisuals[i].blue_mask)
-            return xnestVisuals[i].visual;
-
-    return NULL;
-}
-
-Visual *
-xnestVisualFromID(ScreenPtr pScreen, VisualID visual)
-{
-    int i;
-
-    for (i = 0; i < pScreen->numVisuals; i++)
-        if (pScreen->visuals[i].vid == visual)
-            return xnestVisual(&pScreen->visuals[i]);
-
-    return NULL;
-}
-
-Colormap
-xnestDefaultVisualColormap(Visual * visual)
-{
-    int i;
-
-    for (i = 0; i < xnestNumVisuals; i++)
-        if (xnestVisuals[i].visual == visual)
-            return xnestDefaultColormaps[i];
-
-    return None;
-}

hw/xnest/Visual.h

@@ -1,27 +0,0 @@
-/*
-
-Copyright 1993 by Davor Matic
-
-Permission to use, copy, modify, distribute, and sell this software
-and its documentation for any purpose is hereby granted without fee,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation.  Davor Matic makes no representations about
-the suitability of this software for any purpose.  It is provided "as
-is" without express or implied warranty.
-
-*/
-
-#ifndef XNESTVISUAL_H
-#define XNESTVISUAL_H
-
-#include <X11/X.h>
-
-Visual *xnestVisual(VisualPtr pVisual);
-Visual *xnestVisualFromID(ScreenPtr pScreen, VisualID visual);
-Colormap xnestDefaultVisualColormap(Visual * visual);
-
-#define xnestDefaultVisual(pScreen) \
-  xnestVisualFromID((pScreen), (pScreen)->rootVisual)
-
-#endif                          /* XNESTVISUAL_H */

hw/xnest/Window.c

@@ -16,6 +16,9 @@ is" without express or implied warranty.
 #include <xnest-config.h>
 #endif
 
+#include <xcb/xcb.h>
+#include <xcb/shape.h>
+
 #include <X11/X.h>
 #include <X11/Xdefs.h>
 #include <X11/Xproto.h>
@@ -30,14 +33,13 @@ is" without express or implied warranty.
 
 #include "mi.h"
 
-#include "Xnest.h"
+#include "xnest-xcb.h"
 
 #include "Display.h"
 #include "Screen.h"
 #include "XNGC.h"
 #include "Drawable.h"
 #include "Color.h"
-#include "Visual.h"
 #include "Events.h"
 #include "Args.h"
 
@@ -78,25 +80,25 @@ Bool
 xnestCreateWindow(WindowPtr pWin)
 {
     unsigned long mask;
-    XSetWindowAttributes attributes;
-    Visual *visual;
+    XnSetWindowAttr attributes = { 0 };
+    uint32_t visual = CopyFromParent; /* 0L */
     ColormapPtr pCmap;
+    uint32_t params[32] = { 0 };
 
     if (pWin->drawable.class == InputOnly) {
         mask = 0L;
         visual = CopyFromParent;
     }
     else {
-        mask = CWEventMask | CWBackingStore;
-        attributes.event_mask = ExposureMask;
-        attributes.backing_store = NotUseful;
+        mask = XCB_CW_EVENT_MASK | XCB_CW_BACKING_STORE;
+        attributes.event_mask = XCB_EVENT_MASK_EXPOSURE;
+        attributes.backing_store = XCB_BACKING_STORE_NOT_USEFUL;
 
         if (pWin->parent) {
             if (pWin->optional &&
                 pWin->optional->visual != wVisual(pWin->parent)) {
-                visual =
-                    xnestVisualFromID(pWin->drawable.pScreen, wVisual(pWin));
-                mask |= CWColormap;
+                visual = xnest_visual_map_to_host(wVisual(pWin));
+                mask |= XCB_CW_COLORMAP;
                 if (pWin->optional->colormap) {
                     dixLookupResourceByType((void **) &pCmap, wColormap(pWin),
                                             X11_RESTYPE_COLORMAP, serverClient,
@@ -104,39 +106,43 @@ xnestCreateWindow(WindowPtr pWin)
                     attributes.colormap = xnestColormap(pCmap);
                 }
                 else
-                    attributes.colormap = xnestDefaultVisualColormap(visual);
+                    attributes.colormap = xnestHostVisualToHostCmap(visual);
             }
             else
                 visual = CopyFromParent;
         }
         else {                  /* root windows have their own colormaps at creation time */
-            visual = xnestVisualFromID(pWin->drawable.pScreen, wVisual(pWin));
+            visual = xnest_visual_map_to_host(wVisual(pWin));
             dixLookupResourceByType((void **) &pCmap, wColormap(pWin),
                                     X11_RESTYPE_COLORMAP, serverClient, DixUseAccess);
-            mask |= CWColormap;
+            mask |= XCB_CW_COLORMAP;
             attributes.colormap = xnestColormap(pCmap);
         }
     }
 
-    xnestWindowPriv(pWin)->window = XCreateWindow(xnestDisplay,
+    xnestWindowPriv(pWin)->window = xcb_generate_id(xnestUpstreamInfo.conn);
+    xnest_encode_window_attr(attributes, mask, params);
+    xcb_create_window(xnestUpstreamInfo.conn,
+                      pWin->drawable.depth,
+                      xnestWindowPriv(pWin)->window,
                       xnestWindowParent(pWin),
-                                                  pWin->origin.x -
-                                                  wBorderWidth(pWin),
-                                                  pWin->origin.y -
-                                                  wBorderWidth(pWin),
+                      pWin->origin.x - wBorderWidth(pWin),
+                      pWin->origin.y - wBorderWidth(pWin),
                       pWin->drawable.width,
                       pWin->drawable.height,
                       pWin->borderWidth,
-                                                  pWin->drawable.depth,
                       pWin->drawable.class,
-                                                  visual, mask, &attributes);
+                      visual,
+                      mask,
+                      &params);
+
     xnestWindowPriv(pWin)->parent = xnestWindowParent(pWin);
     xnestWindowPriv(pWin)->x = pWin->origin.x - wBorderWidth(pWin);
     xnestWindowPriv(pWin)->y = pWin->origin.y - wBorderWidth(pWin);
     xnestWindowPriv(pWin)->width = pWin->drawable.width;
     xnestWindowPriv(pWin)->height = pWin->drawable.height;
     xnestWindowPriv(pWin)->border_width = pWin->borderWidth;
-    xnestWindowPriv(pWin)->sibling_above = None;
+    xnestWindowPriv(pWin)->sibling_above = XCB_WINDOW_NONE;
     if (pWin->nextSib)
         xnestWindowPriv(pWin->nextSib)->sibling_above = xnestWindow(pWin);
     xnestWindowPriv(pWin)->bounding_shape = RegionCreate(NULL, 1);
@@ -145,7 +151,7 @@ xnestCreateWindow(WindowPtr pWin)
     if (!pWin->parent)          /* only the root window will have the right colormap */
         xnestSetInstalledColormapWindows(pWin->drawable.pScreen);
 
-    return True;
+    return TRUE;
 }
 
 Bool
@@ -156,83 +162,90 @@ xnestDestroyWindow(WindowPtr pWin)
             xnestWindowPriv(pWin)->sibling_above;
     RegionDestroy(xnestWindowPriv(pWin)->bounding_shape);
     RegionDestroy(xnestWindowPriv(pWin)->clip_shape);
-    XDestroyWindow(xnestDisplay, xnestWindow(pWin));
-    xnestWindowPriv(pWin)->window = None;
+    xcb_destroy_window(xnestUpstreamInfo.conn, xnestWindow(pWin));
+    xnestWindowPriv(pWin)->window = XCB_WINDOW_NONE;
 
     if (pWin->optional && pWin->optional->colormap && pWin->parent)
         xnestSetInstalledColormapWindows(pWin->drawable.pScreen);
 
-    return True;
+    return TRUE;
 }
 
 Bool
 xnestPositionWindow(WindowPtr pWin, int x, int y)
 {
     xnestConfigureWindow(pWin,
-                         CWParent |
-                         CWX | CWY | CWWidth | CWHeight | CWBorderWidth);
+                         XCB_CONFIG_WINDOW_SIBLING | \
+                         XCB_CONFIG_WINDOW_X | \
+                         XCB_CONFIG_WINDOW_Y | \
+                         XCB_CONFIG_WINDOW_WIDTH | \
+                         XCB_CONFIG_WINDOW_HEIGHT | \
+                         XCB_CONFIG_WINDOW_BORDER_WIDTH);
 
-    return True;
+    return TRUE;
 }
 
 void
 xnestConfigureWindow(WindowPtr pWin, unsigned int mask)
 {
     unsigned int valuemask;
-    XWindowChanges values;
+    XnWindowChanges values;
 
-    if (mask & CWParent &&
+    if (mask & XCB_CONFIG_WINDOW_SIBLING  &&
         xnestWindowPriv(pWin)->parent != xnestWindowParent(pWin)) {
-        XReparentWindow(xnestDisplay, xnestWindow(pWin),
+
+        xcb_reparent_window(
+            xnestUpstreamInfo.conn,
+            xnestWindow(pWin),
             xnestWindowParent(pWin),
             pWin->origin.x - wBorderWidth(pWin),
             pWin->origin.y - wBorderWidth(pWin));
+
         xnestWindowPriv(pWin)->parent = xnestWindowParent(pWin);
         xnestWindowPriv(pWin)->x = pWin->origin.x - wBorderWidth(pWin);
         xnestWindowPriv(pWin)->y = pWin->origin.y - wBorderWidth(pWin);
-        xnestWindowPriv(pWin)->sibling_above = None;
+        xnestWindowPriv(pWin)->sibling_above = XCB_WINDOW_NONE;
         if (pWin->nextSib)
             xnestWindowPriv(pWin->nextSib)->sibling_above = xnestWindow(pWin);
     }
 
     valuemask = 0;
 
-    if (mask & CWX &&
+    if (mask & XCB_CONFIG_WINDOW_X &&
         xnestWindowPriv(pWin)->x != pWin->origin.x - wBorderWidth(pWin)) {
-        valuemask |= CWX;
+        valuemask |= XCB_CONFIG_WINDOW_X;
         values.x =
             xnestWindowPriv(pWin)->x = pWin->origin.x - wBorderWidth(pWin);
     }
 
-    if (mask & CWY &&
+    if (mask & XCB_CONFIG_WINDOW_Y &&
         xnestWindowPriv(pWin)->y != pWin->origin.y - wBorderWidth(pWin)) {
-        valuemask |= CWY;
+        valuemask |= XCB_CONFIG_WINDOW_Y;
         values.y =
             xnestWindowPriv(pWin)->y = pWin->origin.y - wBorderWidth(pWin);
     }
 
-    if (mask & CWWidth && xnestWindowPriv(pWin)->width != pWin->drawable.width) {
-        valuemask |= CWWidth;
+    if (mask & XCB_CONFIG_WINDOW_WIDTH && xnestWindowPriv(pWin)->width != pWin->drawable.width) {
+        valuemask |= XCB_CONFIG_WINDOW_WIDTH;
         values.width = xnestWindowPriv(pWin)->width = pWin->drawable.width;
     }
 
-    if (mask & CWHeight &&
+    if (mask & XCB_CONFIG_WINDOW_HEIGHT &&
         xnestWindowPriv(pWin)->height != pWin->drawable.height) {
-        valuemask |= CWHeight;
+        valuemask |= XCB_CONFIG_WINDOW_HEIGHT;
         values.height = xnestWindowPriv(pWin)->height = pWin->drawable.height;
     }
 
-    if (mask & CWBorderWidth &&
+    if (mask & XCB_CONFIG_WINDOW_BORDER_WIDTH &&
         xnestWindowPriv(pWin)->border_width != pWin->borderWidth) {
-        valuemask |= CWBorderWidth;
+        valuemask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
         values.border_width =
             xnestWindowPriv(pWin)->border_width = pWin->borderWidth;
     }
 
-    if (valuemask)
-        XConfigureWindow(xnestDisplay, xnestWindow(pWin), valuemask, &values);
+    xnest_configure_window(xnestUpstreamInfo.conn, xnestWindow(pWin), valuemask, values);
 
-    if (mask & CWStackingOrder &&
+    if (mask & XCB_CONFIG_WINDOW_SIBLING &&
         xnestWindowPriv(pWin)->sibling_above != xnestWindowSiblingAbove(pWin)) {
         WindowPtr pSib;
 
@@ -240,18 +253,18 @@ xnestConfigureWindow(WindowPtr pWin, unsigned int mask)
         for (pSib = pWin; pSib->prevSib != NullWindow; pSib = pSib->prevSib);
 
         /* the top sibling */
-        valuemask = CWStackMode;
+        valuemask = XCB_CONFIG_WINDOW_STACK_MODE;
         values.stack_mode = Above;
-        XConfigureWindow(xnestDisplay, xnestWindow(pSib), valuemask, &values);
-        xnestWindowPriv(pSib)->sibling_above = None;
+
+        xnest_configure_window(xnestUpstreamInfo.conn, xnestWindow(pSib), valuemask, values);
+        xnestWindowPriv(pSib)->sibling_above = XCB_WINDOW_NONE;
 
         /* the rest of siblings */
         for (pSib = pSib->nextSib; pSib != NullWindow; pSib = pSib->nextSib) {
-            valuemask = CWSibling | CWStackMode;
+            valuemask = XCB_CONFIG_WINDOW_SIBLING | XCB_CONFIG_WINDOW_STACK_MODE;
             values.sibling = xnestWindowSiblingAbove(pSib);
             values.stack_mode = Below;
-            XConfigureWindow(xnestDisplay, xnestWindow(pSib), valuemask,
-                             &values);
+            xnest_configure_window(xnestUpstreamInfo.conn, xnestWindow(pSib), valuemask, values);
             xnestWindowPriv(pSib)->sibling_above =
                 xnestWindowSiblingAbove(pSib);
         }
@@ -261,15 +274,15 @@ xnestConfigureWindow(WindowPtr pWin, unsigned int mask)
 Bool
 xnestChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
 {
-    XSetWindowAttributes attributes;
+    XnSetWindowAttr attributes;
 
-    if (mask & CWBackPixmap)
+    if (mask & XCB_CW_BACK_PIXMAP)
         switch (pWin->backgroundState) {
-        case None:
-            attributes.background_pixmap = None;
+        case XCB_BACK_PIXMAP_NONE:
+            attributes.background_pixmap = XCB_PIXMAP_NONE;
             break;
 
-        case ParentRelative:
+        case XCB_BACK_PIXMAP_PARENT_RELATIVE:
             attributes.background_pixmap = ParentRelative;
             break;
 
@@ -278,59 +291,59 @@ xnestChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
             break;
 
         case BackgroundPixel:
-            mask &= ~CWBackPixmap;
+            mask &= ~XCB_CW_BACK_PIXMAP;
             break;
         }
 
-    if (mask & CWBackPixel) {
+    if (mask & XCB_CW_BACK_PIXEL) {
         if (pWin->backgroundState == BackgroundPixel)
             attributes.background_pixel = xnestPixel(pWin->background.pixel);
         else
-            mask &= ~CWBackPixel;
+            mask &= ~XCB_CW_BACK_PIXEL;
     }
 
-    if (mask & CWBorderPixmap) {
+    if (mask & XCB_CW_BORDER_PIXMAP) {
         if (pWin->borderIsPixel)
-            mask &= ~CWBorderPixmap;
+            mask &= ~XCB_CW_BORDER_PIXMAP;
         else
             attributes.border_pixmap = xnestPixmap(pWin->border.pixmap);
     }
 
-    if (mask & CWBorderPixel) {
+    if (mask & XCB_CW_BORDER_PIXEL) {
         if (pWin->borderIsPixel)
             attributes.border_pixel = xnestPixel(pWin->border.pixel);
         else
-            mask &= ~CWBorderPixel;
+            mask &= ~XCB_CW_BORDER_PIXEL;
     }
 
-    if (mask & CWBitGravity)
+    if (mask & XCB_CW_BIT_GRAVITY)
         attributes.bit_gravity = pWin->bitGravity;
 
-    if (mask & CWWinGravity)    /* dix does this for us */
-        mask &= ~CWWinGravity;
+    if (mask & XCB_CW_WIN_GRAVITY)    /* dix does this for us */
+        mask &= ~XCB_CW_WIN_GRAVITY;
 
-    if (mask & CWBackingStore)  /* this is really not useful */
-        mask &= ~CWBackingStore;
+    if (mask & XCB_CW_BACKING_STORE)  /* this is really not useful */
+        mask &= ~XCB_CW_BACKING_STORE;
 
-    if (mask & CWBackingPlanes) /* this is really not useful */
-        mask &= ~CWBackingPlanes;
+    if (mask & XCB_CW_BACKING_PLANES) /* this is really not useful */
+        mask &= ~XCB_CW_BACKING_PLANES;
 
-    if (mask & CWBackingPixel)  /* this is really not useful */
-        mask &= ~CWBackingPixel;
+    if (mask & XCB_CW_BACKING_PIXEL)  /* this is really not useful */
+        mask &= ~XCB_CW_BACKING_PIXEL;
 
-    if (mask & CWOverrideRedirect)
+    if (mask & XCB_CW_OVERRIDE_REDIRECT)
         attributes.override_redirect = pWin->overrideRedirect;
 
-    if (mask & CWSaveUnder)     /* this is really not useful */
-        mask &= ~CWSaveUnder;
+    if (mask & XCB_CW_SAVE_UNDER)     /* this is really not useful */
+        mask &= ~XCB_CW_SAVE_UNDER;
 
-    if (mask & CWEventMask)     /* events are handled elsewhere */
-        mask &= ~CWEventMask;
+    if (mask & XCB_CW_EVENT_MASK)     /* events are handled elsewhere */
+        mask &= ~XCB_CW_EVENT_MASK;
 
-    if (mask & CWDontPropagate) /* events are handled elsewhere */
-        mask &= ~CWDontPropagate;
+    if (mask & XCB_CW_DONT_PROPAGATE) /* events are handled elsewhere */
+        mask &= ~XCB_CW_DONT_PROPAGATE;
 
-    if (mask & CWColormap) {
+    if (mask & XCB_CW_COLORMAP) {
         ColormapPtr pCmap;
 
         dixLookupResourceByType((void **) &pCmap, wColormap(pWin),
@@ -341,32 +354,35 @@ xnestChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
         xnestSetInstalledColormapWindows(pWin->drawable.pScreen);
     }
 
-    if (mask & CWCursor)        /* this is handled in cursor code */
-        mask &= ~CWCursor;
+    if (mask & XCB_CW_CURSOR)        /* this is handled in cursor code */
+        mask &= ~XCB_CW_CURSOR;
 
-    if (mask)
-        XChangeWindowAttributes(xnestDisplay, xnestWindow(pWin),
-                                mask, &attributes);
-
-    return True;
+    if (mask) {
+        uint32_t values[32];
+        xnest_encode_window_attr(attributes, mask, values);
+        xcb_change_window_attributes(xnestUpstreamInfo.conn,
+                                     xnestWindow(pWin),
+                                     mask,
+                                     values);
+    }
+    return TRUE;
 }
 
 Bool
 xnestRealizeWindow(WindowPtr pWin)
 {
-    xnestConfigureWindow(pWin, CWStackingOrder);
+    xnestConfigureWindow(pWin, XCB_CONFIG_WINDOW_SIBLING);
     xnestShapeWindow(pWin);
-    XMapWindow(xnestDisplay, xnestWindow(pWin));
+    xcb_map_window(xnestUpstreamInfo.conn, xnestWindow(pWin));
 
-    return True;
+    return TRUE;
 }
 
 Bool
 xnestUnrealizeWindow(WindowPtr pWin)
 {
-    XUnmapWindow(xnestDisplay, xnestWindow(pWin));
-
-    return True;
+    xcb_unmap_window(xnestUpstreamInfo.conn, xnestWindow(pWin));
+    return TRUE;
 }
 
 void
@@ -377,44 +393,10 @@ xnestCopyWindow(WindowPtr pWin, xPoint oldOrigin, RegionPtr oldRegion)
 void
 xnestClipNotify(WindowPtr pWin, int dx, int dy)
 {
-    xnestConfigureWindow(pWin, CWStackingOrder);
+    xnestConfigureWindow(pWin, XCB_CONFIG_WINDOW_SIBLING);
     xnestShapeWindow(pWin);
 }
 
-static Bool
-xnestWindowExposurePredicate(Display * dpy, XEvent * event, XPointer ptr)
-{
-    return (event->type == Expose && event->xexpose.window == *(Window *) ptr);
-}
-
-void
-xnestWindowExposures(WindowPtr pWin, RegionPtr pRgn)
-{
-    XEvent event;
-    Window window;
-    BoxRec Box;
-
-    XSync(xnestDisplay, False);
-
-    window = xnestWindow(pWin);
-
-    while (XCheckIfEvent(xnestDisplay, &event,
-                         xnestWindowExposurePredicate, (char *) &window)) {
-
-        Box.x1 = pWin->drawable.x + wBorderWidth(pWin) + event.xexpose.x;
-        Box.y1 = pWin->drawable.y + wBorderWidth(pWin) + event.xexpose.y;
-        Box.x2 = Box.x1 + event.xexpose.width;
-        Box.y2 = Box.y1 + event.xexpose.height;
-
-        event.xexpose.type = ProcessedExpose;
-
-        if (RegionContainsRect(pRgn, &Box) != rgnIN)
-            XPutBackEvent(xnestDisplay, &event);
-    }
-
-    miWindowExposures(pWin, pRgn);
-}
-
 void
 xnestSetShape(WindowPtr pWin, int kind)
 {
@@ -429,10 +411,10 @@ xnestRegionEqual(RegionPtr pReg1, RegionPtr pReg2)
     unsigned int n1, n2;
 
     if (pReg1 == pReg2)
-        return True;
+        return TRUE;
 
     if (pReg1 == NullRegion || pReg2 == NullRegion)
-        return False;
+        return FALSE;
 
     pBox1 = RegionRects(pReg1);
     n1 = RegionNumRects(pReg1);
@@ -441,25 +423,20 @@ xnestRegionEqual(RegionPtr pReg1, RegionPtr pReg2)
     n2 = RegionNumRects(pReg2);
 
     if (n1 != n2)
-        return False;
+        return FALSE;
 
     if (pBox1 == pBox2)
-        return True;
+        return TRUE;
 
     if (memcmp(pBox1, pBox2, n1 * sizeof(BoxRec)))
-        return False;
+        return FALSE;
 
-    return True;
+    return TRUE;
 }
 
 void
 xnestShapeWindow(WindowPtr pWin)
 {
-    Region reg;
-    BoxPtr pBox;
-    XRectangle rect;
-    int i;
-
     if (!xnestRegionEqual(xnestWindowPriv(pWin)->bounding_shape,
                           wBoundingShape(pWin))) {
 
@@ -467,26 +444,27 @@ xnestShapeWindow(WindowPtr pWin)
             RegionCopy(xnestWindowPriv(pWin)->bounding_shape,
                        wBoundingShape(pWin));
 
-            reg = XCreateRegion();
-            pBox = RegionRects(xnestWindowPriv(pWin)->bounding_shape);
-            for (i = 0;
-                 i < RegionNumRects(xnestWindowPriv(pWin)->bounding_shape);
-                 i++) {
-                rect.x = pBox[i].x1;
-                rect.y = pBox[i].y1;
-                rect.width = pBox[i].x2 - pBox[i].x1;
-                rect.height = pBox[i].y2 - pBox[i].y1;
-                XUnionRectWithRegion(&rect, reg, reg);
+            int const num_rects = RegionNumRects(xnestWindowPriv(pWin)->bounding_shape);
+            BoxPtr const pBox = RegionRects(xnestWindowPriv(pWin)->bounding_shape);
+            xcb_rectangle_t *rects = calloc(num_rects, sizeof(xcb_rectangle_t));
+
+            for (int i = 0; i < num_rects; i++) {
+                rects[i].x = pBox[i].x1;
+                rects[i].y = pBox[i].y1;
+                rects[i].width = pBox[i].x2 - pBox[i].x1;
+                rects[i].height = pBox[i].y2 - pBox[i].y1;
             }
-            XShapeCombineRegion(xnestDisplay, xnestWindow(pWin),
-                                ShapeBounding, 0, 0, reg, ShapeSet);
-            XDestroyRegion(reg);
+
+            xcb_shape_rectangles(xnestUpstreamInfo.conn, XCB_SHAPE_SO_SET,
+                                 XCB_SHAPE_SK_BOUNDING, XCB_CLIP_ORDERING_YX_BANDED,
+                                 xnestWindow(pWin), 0, 0, num_rects, rects);
+            free(rects);
         }
         else {
             RegionEmpty(xnestWindowPriv(pWin)->bounding_shape);
-
-            XShapeCombineMask(xnestDisplay, xnestWindow(pWin),
-                              ShapeBounding, 0, 0, None, ShapeSet);
+            xcb_shape_mask(xnestUpstreamInfo.conn, XCB_SHAPE_SO_SET,
+                           XCB_SHAPE_SK_BOUNDING, xnestWindow(pWin),
+                           0, 0, XCB_PIXMAP_NONE);
         }
     }
 
@@ -495,25 +473,34 @@ xnestShapeWindow(WindowPtr pWin)
         if (wClipShape(pWin)) {
             RegionCopy(xnestWindowPriv(pWin)->clip_shape, wClipShape(pWin));
 
-            reg = XCreateRegion();
-            pBox = RegionRects(xnestWindowPriv(pWin)->clip_shape);
-            for (i = 0;
-                 i < RegionNumRects(xnestWindowPriv(pWin)->clip_shape); i++) {
-                rect.x = pBox[i].x1;
-                rect.y = pBox[i].y1;
-                rect.width = pBox[i].x2 - pBox[i].x1;
-                rect.height = pBox[i].y2 - pBox[i].y1;
-                XUnionRectWithRegion(&rect, reg, reg);
+            int const num_rects = RegionNumRects(xnestWindowPriv(pWin)->clip_shape);
+            BoxPtr const pBox = RegionRects(xnestWindowPriv(pWin)->clip_shape);
+            xcb_rectangle_t *rects = calloc(num_rects, sizeof(xcb_rectangle_t));
+
+            for (int i = 0; i < num_rects; i++) {
+                rects[i].x = pBox[i].x1;
+                rects[i].y = pBox[i].y1;
+                rects[i].width = pBox[i].x2 - pBox[i].x1;
+                rects[i].height = pBox[i].y2 - pBox[i].y1;
             }
-            XShapeCombineRegion(xnestDisplay, xnestWindow(pWin),
-                                ShapeClip, 0, 0, reg, ShapeSet);
-            XDestroyRegion(reg);
+
+            xcb_shape_rectangles(xnestUpstreamInfo.conn, XCB_SHAPE_SO_SET,
+                                 XCB_SHAPE_SK_CLIP, XCB_CLIP_ORDERING_YX_BANDED,
+                                 xnestWindow(pWin), 0, 0, num_rects, rects);
+            free(rects);
         }
         else {
             RegionEmpty(xnestWindowPriv(pWin)->clip_shape);
+            xcb_shape_mask(xnestUpstreamInfo.conn, XCB_SHAPE_SO_SET,
+                           XCB_SHAPE_SK_CLIP, xnestWindow(pWin), 0, 0, XCB_PIXMAP_NONE);
+        }
+    }
+}
 
-            XShapeCombineMask(xnestDisplay, xnestWindow(pWin),
-                              ShapeClip, 0, 0, None, ShapeSet);
-        }
-    }
+void xnestClearToBackground(WindowPtr pWin, int x, int y, int w, int h, Bool generateExposures)
+{
+    xcb_clear_area(xnestUpstreamInfo.conn,
+                   generateExposures,
+                   xnestWindow(pWin),
+                   x, y, w, h);
 }

hw/xnest/XNFont.h

@@ -17,19 +17,13 @@ is" without express or implied warranty.
 
 #include <X11/Xdefs.h>
 
-typedef struct {
-    XFontStruct *font_struct;
-} xnestPrivFont;
+#include <xcb/xcb.h>
 
 extern int xnestFontPrivateIndex;
 
 #define xnestFontPriv(pFont) \
   ((xnestPrivFont *)FontGetPrivate(pFont, xnestFontPrivateIndex))
 
-#define xnestFontStruct(pFont) (xnestFontPriv(pFont)->font_struct)
-
-#define xnestFont(pFont) (xnestFontStruct(pFont)->fid)
-
 Bool xnestRealizeFont(ScreenPtr pScreen, FontPtr pFont);
 Bool xnestUnrealizeFont(ScreenPtr pScreen, FontPtr pFont);
 

hw/xnest/XNGC.h

@@ -17,10 +17,11 @@ is" without express or implied warranty.
 
 #include <X11/Xdefs.h>
 
-/* This file uses the GC definition form Xlib.h as XlibGC. */
+#include "include/gcstruct.h"
+#include "include/privates.h"
 
 typedef struct {
-    XlibGC gc;
+    uint32_t gc;
 } xnestPrivGC;
 
 extern DevPrivateKeyRec xnestGCPrivateKeyRec;

hw/xnest/XNWindow.h

@@ -50,13 +50,10 @@ extern DevPrivateKeyRec xnestWindowPrivateKeyRec;
    xnestDefaultWindows[pWin->drawable.pScreen->myNum])
 
 #define xnestWindowSiblingAbove(pWin) \
-  ((pWin)->prevSib ? xnestWindow((pWin)->prevSib) : None)
+  ((pWin)->prevSib ? xnestWindow((pWin)->prevSib) : XCB_WINDOW_NONE)
 
 #define xnestWindowSiblingBelow(pWin) \
-  ((pWin)->nextSib ? xnestWindow((pWin)->nextSib) : None)
-
-#define CWParent CWSibling
-#define CWStackingOrder CWStackMode
+  ((pWin)->nextSib ? xnestWindow((pWin)->nextSib) : XCB_WINDOW_NONE)
 
 WindowPtr xnestWindowPtr(Window window);
 Bool xnestCreateWindow(WindowPtr pWin);
@@ -68,8 +65,8 @@ Bool xnestRealizeWindow(WindowPtr pWin);
 Bool xnestUnrealizeWindow(WindowPtr pWin);
 void xnestCopyWindow(WindowPtr pWin, xPoint oldOrigin, RegionPtr oldRegion);
 void xnestClipNotify(WindowPtr pWin, int dx, int dy);
-void xnestWindowExposures(WindowPtr pWin, RegionPtr pRgn);
 void xnestSetShape(WindowPtr pWin, int kind);
 void xnestShapeWindow(WindowPtr pWin);
+void xnestClearToBackground(WindowPtr pWin, int x, int y, int w, int h, Bool generateExposures);
 
 #endif                          /* XNESTWINDOW_H */

hw/xnest/Xnest.h

@@ -1,90 +0,0 @@
-/*
-
-Copyright (c) 1995  X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of the X Consortium shall
-not be used in advertising or otherwise to promote the sale, use or
-other dealings in this Software without prior written authorization
-from the X Consortium.
-
-*/
-
-/*
-** Machines with a 64 bit library interface and a 32 bit server require
-** name changes to protect the guilty.
-*/
-#ifdef _XSERVER64
-#define _XSERVER64_tmp
-#undef _XSERVER64
-typedef unsigned long XID64;
-typedef unsigned long Mask64;
-typedef unsigned long Atom64;
-typedef unsigned long VisualID64;
-typedef unsigned long Time64;
-
-#define XID     XID64
-#define Mask    Mask64
-#define Atom    Atom64
-#define VisualID VisualID64
-#define Time    Time64
-typedef XID Window64;
-typedef XID Drawable64;
-typedef XID Font64;
-typedef XID Pixmap64;
-typedef XID Cursor64;
-typedef XID Colormap64;
-typedef XID GContext64;
-typedef XID KeySym64;
-
-#define Window          Window64
-#define Drawable        Drawable64
-#define Font            Font64
-#define Pixmap          Pixmap64
-#define Cursor          Cursor64
-#define Colormap        Colormap64
-#define GContext        GContext64
-#define KeySym          KeySym64
-#endif  /*_XSERVER64*/
-
-#define GC XlibGC
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-#include <X11/extensions/shape.h>
-#undef GC
-
-#ifdef _XSERVER64_tmp
-#define _XSERVER64
-#undef _XSERVER64_tmp
-#undef XID
-#undef Mask
-#undef Atom
-#undef VisualID
-#undef Time
-#undef Window
-#undef Drawable
-#undef Font
-#undef Pixmap
-#undef Cursor
-#undef Colormap
-#undef GContext
-#undef KeySym
-#endif /*_XSERVER64_tmp*/

hw/xnest/meson.build

@@ -13,19 +13,28 @@ srcs = [
     'Pixmap.c',
     'Pointer.c',
     'Screen.c',
-    'Visual.c',
     'Window.c',
     '../../mi/miinitext.c',
     '../../mi/miinitext.h',
+    'xcb.c',
+    'xkb.c',
 ]
 
+xcb_dep = dependency('xcb', required: true)
+xcb_shape_dep = dependency('xcb-shape', required: true)
+xcb_icccm_dep = dependency('xcb-icccm', required: true)
+xcb_xkb_dep = dependency('xcb-xkb', required: true)
+
 executable(
     'Xnest',
     srcs,
     include_directories: inc,
     dependencies: [
         common_dep,
-        xnest_dep,
+        xcb_dep,
+        xcb_shape_dep,
+        xcb_icccm_dep,
+        xcb_xkb_dep,
     ],
     link_with: [
         libxserver_main,

hw/xnest/xcb.c

@@ -0,0 +1,676 @@
+/* SPDX-License-Identifier: MIT OR X11
+ *
+ * Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
+ */
+#include <dix-config.h>
+
+#include <xcb/xcb.h>
+#include <xcb/xcb_icccm.h>
+
+#include <X11/X.h>
+#include <X11/Xdefs.h>
+#include <X11/Xproto.h>
+#include <xcb/xkb.h>
+
+#include "include/gc.h"
+#include "include/servermd.h"
+
+#include "xnest-xcb.h"
+#include "xnest-xkb.h"
+#include "XNGC.h"
+#include "Display.h"
+
+xnestUpstreamInfoRec xnestUpstreamInfo = { 0 };
+XnestVisualRec *xnestVisualMap;
+int xnestNumVisualMap;
+
+Bool xnest_upstream_setup(const char* displayName)
+{
+    xnestUpstreamInfo.conn = xcb_connect(displayName, &xnestUpstreamInfo.screenId);
+    if (!xnestUpstreamInfo.conn)
+        return FALSE;
+
+    /* retrieve setup data for our screen */
+    xnestUpstreamInfo.setup = xcb_get_setup(xnestUpstreamInfo.conn);
+    xcb_screen_iterator_t iter = xcb_setup_roots_iterator (xnestUpstreamInfo.setup);
+
+    for (int i = 0; i < xnestUpstreamInfo.screenId; ++i)
+        xcb_screen_next (&iter);
+    xnestUpstreamInfo.screenInfo = iter.data;
+
+    xorg_list_init(&xnestUpstreamInfo.eventQueue.entry);
+
+    return TRUE;
+}
+
+/* retrieve upstream GC XID for our xserver GC */
+uint32_t xnestUpstreamGC(GCPtr pGC) {
+    if (pGC == NULL) return 0;
+
+    xnestPrivGC *priv = dixLookupPrivate(&(pGC)->devPrivates, xnestGCPrivateKey);
+    if (priv == NULL) return 0;
+
+    return priv->gc;
+}
+
+void xnest_encode_window_attr(XnSetWindowAttr attr, uint32_t mask, uint32_t *values)
+{
+    int idx = 0;
+#define EXTRA_VALUE(flag,val) if (mask & flag) { values[idx++] = attr.val; }
+    EXTRA_VALUE(XCB_CW_BACK_PIXMAP,       background_pixmap);
+    EXTRA_VALUE(XCB_CW_BACK_PIXEL,        background_pixel)
+    EXTRA_VALUE(XCB_CW_BORDER_PIXMAP,     border_pixmap)
+    EXTRA_VALUE(XCB_CW_BORDER_PIXEL,      border_pixel)
+    EXTRA_VALUE(XCB_CW_BIT_GRAVITY,       bit_gravity)
+    EXTRA_VALUE(XCB_CW_WIN_GRAVITY,       win_gravity);
+    EXTRA_VALUE(XCB_CW_BACKING_STORE,     backing_store);
+    EXTRA_VALUE(XCB_CW_BACKING_PLANES,    backing_planes);
+    EXTRA_VALUE(XCB_CW_BACKING_PIXEL,     backing_pixel);
+    EXTRA_VALUE(XCB_CW_OVERRIDE_REDIRECT, override_redirect);
+    EXTRA_VALUE(XCB_CW_SAVE_UNDER,        save_under);
+    EXTRA_VALUE(XCB_CW_EVENT_MASK,        event_mask);
+    EXTRA_VALUE(XCB_CW_DONT_PROPAGATE,    do_not_propagate_mask);
+    EXTRA_VALUE(XCB_CW_COLORMAP,          colormap);
+    EXTRA_VALUE(XCB_CW_CURSOR,            cursor);
+#undef EXTRA_VALUE
+}
+
+void xnest_configure_window(xcb_connection_t *conn, uint32_t window,
+                            uint32_t mask, XnWindowChanges values)
+{
+    if (mask) {
+        uint32_t value_list[16] = { 0 };
+
+        int idx = 0;
+
+#define EXTRA_VALUE(flag,val) if (mask & flag) { value_list[idx++] = values.val; }
+        EXTRA_VALUE(XCB_CONFIG_WINDOW_X,            x);
+        EXTRA_VALUE(XCB_CONFIG_WINDOW_Y,            y);
+        EXTRA_VALUE(XCB_CONFIG_WINDOW_WIDTH,        width);
+        EXTRA_VALUE(XCB_CONFIG_WINDOW_HEIGHT,       height);
+        EXTRA_VALUE(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
+        EXTRA_VALUE(XCB_CONFIG_WINDOW_SIBLING,      sibling);
+        EXTRA_VALUE(XCB_CONFIG_WINDOW_STACK_MODE,   stack_mode);
+#undef EXTRA_VALUE
+
+        xcb_configure_window(conn, window, mask, value_list);
+    }
+}
+
+void xnestEncodeKeyboardControl(XnKeyboardControl ctrl, long mask, uint32_t *value)
+{
+    if (mask & KBKeyClickPercent)
+        *value++ = ctrl.key_click_percent;
+
+    if (mask & KBBellPercent)
+        *value++ = ctrl.bell_percent;
+
+    if (mask & KBBellPitch)
+        *value++ = ctrl.bell_pitch;
+
+    if (mask & KBBellDuration)
+        *value++ = ctrl.bell_duration;
+
+    if (mask & KBLed)
+        *value++ = ctrl.led;
+
+    if (mask & KBLedMode)
+        *value++ = ctrl.led_mode;
+
+    if (mask & KBKey)
+        *value++ = ctrl.key;
+
+    if (mask & KBAutoRepeatMode)
+        *value++ = ctrl.auto_repeat_mode;
+}
+
+void xnChangeGC(xcb_connection_t *conn, uint32_t gc, XnGCValues gcval, uint32_t mask)
+{
+    char value_list[128] = { 0 };
+    char *walk = value_list;
+
+#define EXTRA_VALUE(flag,val) if (mask & flag) { *((uint32_t*)walk) = gcval.val; walk+=4; }
+    EXTRA_VALUE(GCFunction,          function);
+    EXTRA_VALUE(GCPlaneMask,         plane_mask);
+    EXTRA_VALUE(GCForeground,        foreground);
+    EXTRA_VALUE(GCBackground,        background);
+    EXTRA_VALUE(GCLineWidth,         line_width);
+    EXTRA_VALUE(GCLineStyle,         line_style);
+    EXTRA_VALUE(GCCapStyle,          cap_style);
+    EXTRA_VALUE(GCJoinStyle,         join_style);
+    EXTRA_VALUE(GCFillStyle,         fill_style);
+    EXTRA_VALUE(GCFillRule,          fill_rule);
+    EXTRA_VALUE(GCTile,              tile);
+    EXTRA_VALUE(GCStipple,           stipple);
+    EXTRA_VALUE(GCTileStipXOrigin,   ts_x_origin);
+    EXTRA_VALUE(GCTileStipYOrigin,   ts_y_origin);
+    EXTRA_VALUE(GCFont,              font);
+    EXTRA_VALUE(GCSubwindowMode,     subwindow_mode);
+    EXTRA_VALUE(GCGraphicsExposures, graphics_exposures);
+    EXTRA_VALUE(GCClipXOrigin,       clip_x_origin);
+    EXTRA_VALUE(GCClipYOrigin,       clip_y_origin);
+    EXTRA_VALUE(GCClipMask,          clip_mask);
+    EXTRA_VALUE(GCDashOffset,        dash_offset);
+    EXTRA_VALUE(GCDashList,          dashes);
+    EXTRA_VALUE(GCArcMode,           arc_mode);
+#undef EXTRA_VALUE
+
+    xcb_change_gc(conn, gc, mask, value_list);
+}
+
+const char WM_COLORMAP_WINDOWS[] = "WM_COLORMAP_WINDOWS";
+
+void xnestWMColormapWindows(xcb_connection_t *conn, xcb_window_t w, xcb_window_t *windows, int count)
+{
+    xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(
+        conn,
+        xcb_intern_atom(
+            conn, 0,
+            sizeof(WM_COLORMAP_WINDOWS)-1,
+            WM_COLORMAP_WINDOWS),
+        NULL);
+
+    if (!reply)
+        return;
+
+    xcb_icccm_set_wm_colormap_windows_checked(
+        conn,
+        w,
+        reply->atom,
+        count,
+        (xcb_window_t*)windows);
+
+    free(reply);
+}
+
+uint32_t xnestCreateBitmapFromData(
+     xcb_connection_t *conn,
+     uint32_t drawable,
+     const char *data,
+     uint32_t width,
+     uint32_t height)
+{
+    uint32_t pix = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_create_pixmap(conn, 1, pix, drawable, width, height);
+
+    uint32_t gc = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_create_gc(conn, gc, pix, 0, NULL);
+
+    const int leftPad = 0;
+
+    xcb_put_image(conn,
+                  XYPixmap,
+                  pix,
+                  gc,
+                  width,
+                  height,
+                  0 /* dst_x */,
+                  0 /* dst_y */,
+                  leftPad,
+                  1 /* depth */,
+                  BitmapBytePad(width + leftPad) * height,
+                  (uint8_t*)data);
+
+    xcb_free_gc(conn, gc);
+    return pix;
+}
+
+uint32_t xnestCreatePixmapFromBitmapData(
+    xcb_connection_t *conn,
+    uint32_t drawable,
+    const char *data,
+    uint32_t width,
+    uint32_t height,
+    uint32_t fg,
+    uint32_t bg,
+    uint16_t depth)
+{
+    uint32_t pix = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_create_pixmap(conn, depth, pix, drawable, width, height);
+
+    uint32_t gc = xcb_generate_id(xnestUpstreamInfo.conn);
+    xcb_create_gc(conn, gc, pix, 0, NULL);
+
+    XnGCValues gcv = {
+        .foreground = fg,
+        .background = bg
+    };
+
+    xnChangeGC(conn, gc, gcv, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND);
+
+    const int leftPad = 0;
+    xcb_put_image(conn,
+                  XYBitmap,
+                  pix,
+                  gc,
+                  width,
+                  height,
+                  0 /* dst_x */,
+                  0 /* dst_y */,
+                  leftPad,
+                  1 /* depth */,
+                  BitmapBytePad(width + leftPad) * height,
+                  (uint8_t*)data);
+
+    xcb_free_gc(conn, gc);
+    return pix;
+}
+
+void xnestSetCommand(
+    xcb_connection_t *conn,
+    xcb_window_t window,
+    char **argv,
+    int argc)
+{
+    int i = 0, nbytes = 0;
+
+    for (i = 0, nbytes = 0; i < argc; i++)
+        nbytes += strlen(argv[i]) + 1;
+
+    if (nbytes >= (2^16) - 1)
+        return;
+
+    char buf[nbytes+1];
+    char *bp = buf;
+
+    /* copy arguments into single buffer */
+    for (i = 0; i < argc; i++) {
+        strcpy(bp, argv[i]);
+        bp += strlen(argv[i]) + 1;
+    }
+
+    xcb_change_property(conn,
+                        XCB_PROP_MODE_REPLACE,
+                        window,
+                        XCB_ATOM_WM_COMMAND,
+                        XCB_ATOM_STRING,
+                        8,
+                        nbytes,
+                        buf);
+}
+
+void xnestXkbInit(xcb_connection_t *conn)
+{
+    xcb_generic_error_t *err = NULL;
+    xcb_xkb_use_extension_reply_t *reply = xcb_xkb_use_extension_reply(
+        xnestUpstreamInfo.conn,
+        xcb_xkb_use_extension(
+            xnestUpstreamInfo.conn,
+            XCB_XKB_MAJOR_VERSION,
+            XCB_XKB_MINOR_VERSION),
+        &err);
+
+    if (err) {
+        ErrorF("failed query xkb extension: %d\n", err->error_code);
+        free(err);
+    } else {
+        free(reply);
+    }
+}
+
+#define XkbGBN_AllComponentsMask_2 ( \
+    XCB_XKB_GBN_DETAIL_TYPES | \
+    XCB_XKB_GBN_DETAIL_COMPAT_MAP | \
+    XCB_XKB_GBN_DETAIL_CLIENT_SYMBOLS | \
+    XCB_XKB_GBN_DETAIL_SERVER_SYMBOLS | \
+    XCB_XKB_GBN_DETAIL_INDICATOR_MAPS | \
+    XCB_XKB_GBN_DETAIL_KEY_NAMES | \
+    XCB_XKB_GBN_DETAIL_GEOMETRY | \
+    XCB_XKB_GBN_DETAIL_OTHER_NAMES)
+
+int xnestXkbDeviceId(xcb_connection_t *conn)
+{
+    int device_id = -1;
+    uint8_t xlen[6] = { 0 };
+    xcb_generic_error_t *err = NULL;
+
+    xcb_xkb_get_kbd_by_name_reply_t *reply = xcb_xkb_get_kbd_by_name_reply(
+        xnestUpstreamInfo.conn,
+        xcb_xkb_get_kbd_by_name_2(
+            xnestUpstreamInfo.conn,
+            XCB_XKB_ID_USE_CORE_KBD,
+            XkbGBN_AllComponentsMask_2,
+            XkbGBN_AllComponentsMask_2,
+            0,
+            sizeof(xlen),
+            xlen),
+        &err);
+
+    if (err) {
+        ErrorF("failed retrieving core keyboard: %d\n", err->error_code);
+        free(err);
+        return -1;
+    }
+
+    if (!reply) {
+        ErrorF("failed retrieving core keyboard: no reply");
+        return -1;
+    }
+
+    device_id = reply->deviceID;
+    free(reply);
+    return device_id;
+}
+
+xcb_get_keyboard_mapping_reply_t *xnestGetKeyboardMapping(
+    xcb_connection_t *conn,
+    int min_keycode,
+    int count
+) {
+    xcb_generic_error_t *err= NULL;
+    xcb_get_keyboard_mapping_reply_t * reply = xcb_get_keyboard_mapping_reply(
+        xnestUpstreamInfo.conn,
+        xcb_get_keyboard_mapping(conn, min_keycode, count),
+        &err);
+
+    if (err) {
+        ErrorF("Couldn't get keyboard mapping: %d\n", err->error_code);
+        free(err);
+    }
+
+    return reply;
+}
+
+void xnestGetPointerControl(
+    xcb_connection_t *conn,
+    int *acc_num,
+    int *acc_den,
+    int *threshold)
+{
+    xcb_generic_error_t *err = NULL;
+    xcb_get_pointer_control_reply_t *reply = xcb_get_pointer_control_reply(
+        xnestUpstreamInfo.conn,
+        xcb_get_pointer_control(xnestUpstreamInfo.conn),
+        &err);
+
+    if (err) {
+        ErrorF("error retrieving pointer control data: %d\n", err->error_code);
+        free(err);
+    }
+
+    if (!reply) {
+        ErrorF("error retrieving pointer control data: no reply\n");
+        return;
+    }
+
+    *acc_num = reply->acceleration_numerator;
+    *acc_den = reply->acceleration_denominator;
+    *threshold = reply->threshold;
+    free(reply);
+}
+
+xRectangle xnestGetGeometry(xcb_connection_t *conn, uint32_t window)
+{
+    xcb_generic_error_t *err = NULL;
+    xcb_get_geometry_reply_t *reply = xcb_get_geometry_reply(
+        xnestUpstreamInfo.conn,
+        xcb_get_geometry(xnestUpstreamInfo.conn, window),
+        &err);
+
+    if (err) {
+        ErrorF("failed getting window attributes for %d: %d\n", window, err->error_code);
+        free(err);
+        return (xRectangle) { 0 };
+    }
+
+    if (!reply) {
+        ErrorF("failed getting window attributes for %d: no reply\n", window);
+        return (xRectangle) { 0 };
+    }
+
+    return (xRectangle) {
+        .x = reply->x,
+        .y = reply->y,
+        .width = reply->width,
+        .height = reply->height };
+}
+
+static int __readint(const char *str, const char **next)
+{
+    int res = 0, sign = 1;
+
+    if (*str=='+')
+        str++;
+    else if (*str=='-') {
+        str++;
+        sign = -1;
+    }
+
+    for (; (*str>='0') && (*str<='9'); str++)
+        res = (res * 10) + (*str-'0');
+
+    *next = str;
+    return sign * res;
+}
+
+int xnestParseGeometry(const char *string, xRectangle *geometry)
+{
+    int mask = 0;
+    const char *next;
+    xRectangle temp = { 0 };
+
+    if ((string == NULL) || (*string == '\0')) return 0;
+
+    if (*string == '=')
+        string++;  /* ignore possible '=' at beg of geometry spec */
+
+    if (*string != '+' && *string != '-' && *string != 'x') {
+        temp.width = __readint(string, &next);
+        if (string == next)
+            return 0;
+        string = next;
+        mask |= XCB_CONFIG_WINDOW_WIDTH;
+    }
+
+    if (*string == 'x' || *string == 'X') {
+        string++;
+        temp.height = __readint(string, &next);
+        if (string == next)
+            return 0;
+        string = next;
+        mask |= XCB_CONFIG_WINDOW_HEIGHT;
+    }
+
+    if ((*string == '+') || (*string== '-')) {
+        if (*string== '-') {
+            string++;
+            temp.x = -__readint(string, &next);
+            if (string == next)
+                return 0;
+            string = next;
+        }
+        else
+        {
+            string++;
+            temp.x = __readint(string, &next);
+            if (string == next)
+                return 0;
+            string = next;
+        }
+        mask |= XCB_CONFIG_WINDOW_X;
+        if ((*string == '+') || (*string== '-')) {
+            if (*string== '-') {
+                string++;
+                temp.y = -__readint(string, &next);
+                if (string == next)
+                    return 0;
+                string = next;
+            }
+            else
+            {
+                string++;
+                temp.y = __readint(string, &next);
+                if (string == next)
+                    return 0;
+                string = next;
+            }
+            mask |= XCB_CONFIG_WINDOW_Y;
+        }
+    }
+
+    if (*string != '\0') return 0;
+
+    if (mask & XCB_CONFIG_WINDOW_X)
+        geometry->x = temp.x;
+    if (mask & XCB_CONFIG_WINDOW_Y)
+        geometry->y = temp.y;
+    if (mask & XCB_CONFIG_WINDOW_WIDTH)
+        geometry->width = temp.width;
+    if (mask & XCB_CONFIG_WINDOW_HEIGHT)
+        geometry->height = temp.height;
+
+    return mask;
+}
+
+uint32_t xnest_visual_map_to_host(VisualID visual)
+{
+    for (int i = 0; i < xnestNumVisualMap; i++) {
+        if (xnestVisualMap[i].ourXID == visual) {
+            return xnestVisualMap[i].upstreamVisual->visual_id;
+        }
+    }
+    return XCB_NONE;
+}
+
+uint32_t xnestHostVisualToHostCmap(uint32_t upstreamVisual)
+{
+    for (int i = 0; i < xnestNumVisualMap; i++) {
+        if (xnestVisualMap[i].upstreamVisual->visual_id == upstreamVisual) {
+            return xnestVisualMap[i].upstreamCMap;
+        }
+    }
+    return XCB_COLORMAP_NONE;
+}
+
+uint32_t xnestVisualToHostCmap(uint32_t visual)
+{
+    for (int i = 0; i < xnestNumVisualMap; i++) {
+        if (xnestVisualMap[i].ourXID == visual) {
+            return xnestVisualMap[i].upstreamCMap;
+        }
+    }
+    return XCB_COLORMAP_NONE;
+}
+
+static inline char XN_CI_NONEXISTCHAR(xcb_charinfo_t *cs)
+{
+    return ((cs->character_width == 0) && \
+             ((cs->right_side_bearing | cs->left_side_bearing | cs->ascent | cs->descent) == 0));
+}
+
+#define XN_CI_GET_CHAR_INFO_1D(font,col,def,cs) \
+do { \
+    cs = def; \
+    if (col >= font->font_reply->min_char_or_byte2 && col <= font->font_reply->max_char_or_byte2) { \
+        if (font->chars == NULL) { \
+            cs = &font->font_reply->min_bounds; \
+        } else { \
+            cs = (xcb_charinfo_t *)&font->chars[(col - font->font_reply->min_char_or_byte2)]; \
+            if (XN_CI_NONEXISTCHAR(cs)) cs = def; \
+        } \
+    } \
+} while (0)
+
+#define XN_CI_GET_CHAR_INFO_2D(font,row,col,def,cs) \
+do { \
+    cs = def; \
+    if (row >= font->font_reply->min_byte1 && row <= font->font_reply->max_byte1 && \
+        col >= font->font_reply->min_char_or_byte2 && col <= font->font_reply->max_char_or_byte2) { \
+        if (font->chars == NULL) { \
+            cs = &font->font_reply->min_bounds; \
+        } else { \
+            cs = (xcb_charinfo_t*)&font->chars[((row - font->font_reply->min_byte1) * \
+                                (font->font_reply->max_char_or_byte2 - \
+                                 font->font_reply->min_char_or_byte2 + 1)) + \
+                               (col - font->font_reply->min_char_or_byte2)]; \
+            if (XN_CI_NONEXISTCHAR(cs)) cs = def; \
+        } \
+    } \
+} while (0)
+
+#define XN_CI_GET_DEFAULT_INFO_2D(font,cs) \
+do { \
+    unsigned int r = (font->font_reply->default_char >> 8); \
+    unsigned int c = (font->font_reply->default_char & 0xff); \
+    XN_CI_GET_CHAR_INFO_2D (font, r, c, NULL, cs); \
+} while (0)
+
+#define XN_CI_GET_ROWZERO_CHAR_INFO_2D(font,col,def,cs) \
+do { \
+    cs = def; \
+    if (font->font_reply->min_byte1 == 0 && \
+        col >= font->font_reply->min_char_or_byte2 && col <= font->font_reply->max_char_or_byte2) { \
+        if (font->chars == NULL) { \
+            cs = &font->font_reply->min_bounds; \
+        } else { \
+            cs = (xcb_charinfo_t*)&font->chars[(col - font->font_reply->min_char_or_byte2)]; \
+            if (XN_CI_NONEXISTCHAR(cs)) cs = def; \
+        } \
+    } \
+} while (0)
+
+int
+xnestTextWidth (
+    xnestPrivFont *font,
+    const char *string,
+    int count)
+{
+    xcb_charinfo_t *def;
+
+    if (font->font_reply->max_byte1 == 0)
+        XN_CI_GET_CHAR_INFO_1D (font, font->font_reply->default_char, NULL, def);
+    else
+        XN_CI_GET_DEFAULT_INFO_2D (font, def);
+
+    if (def && font->font_reply->min_bounds.character_width == font->font_reply->max_bounds.character_width)
+        return (font->font_reply->min_bounds.character_width * count);
+
+    int width = 0, i = 0;
+    unsigned char *us;
+    for (i = 0, us = (unsigned char *) string; i < count; i++, us++) {
+        unsigned uc = (unsigned) *us;
+        xcb_charinfo_t *cs;
+
+        if (font->font_reply->max_byte1 == 0) {
+            XN_CI_GET_CHAR_INFO_1D (font, uc, def, cs);
+        } else {
+            XN_CI_GET_ROWZERO_CHAR_INFO_2D (font, uc, def, cs);
+        }
+
+        if (cs) width += cs->character_width;
+    }
+
+    return width;
+}
+
+int xnestTextWidth16 (xnestPrivFont *font, const uint16_t* str, int count)
+{
+    xcb_charinfo_t *def;
+    xcb_char2b_t *string = (xcb_char2b_t*)str;
+
+    if (font->font_reply->max_byte1 == 0)
+        XN_CI_GET_CHAR_INFO_1D (font, font->font_reply->default_char, NULL, def);
+    else
+        XN_CI_GET_DEFAULT_INFO_2D (font, def);
+
+    if (def && font->font_reply->min_bounds.character_width == font->font_reply->max_bounds.character_width)
+        return (font->font_reply->min_bounds.character_width * count);
+
+    int width = 0;
+    for (int i = 0; i < count; i++, string++) {
+        xcb_charinfo_t *cs;
+        unsigned int r = (unsigned int) string->byte1;
+        unsigned int c = (unsigned int) string->byte2;
+
+        if (font->font_reply->max_byte1 == 0) {
+            unsigned int ind = ((r << 8) | c);
+            XN_CI_GET_CHAR_INFO_1D (font, ind, def, cs);
+        } else {
+            XN_CI_GET_CHAR_INFO_2D (font, r, c, def, cs);
+        }
+
+        if (cs) width += cs->character_width;
+    }
+
+    return width;
+}

hw/xnest/xkb.c

@@ -0,0 +1,90 @@
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <stddef.h>  /* for offsetof() */
+
+#include <xcb/xcbext.h>
+#include <xcb/xkb.h>
+#include <xcb/xproto.h>
+
+#include "xnest-xkb.h"
+
+xcb_xkb_get_kbd_by_name_cookie_t
+xcb_xkb_get_kbd_by_name_2 (xcb_connection_t      *c,
+                         xcb_xkb_device_spec_t  deviceSpec,
+                         uint16_t               need,
+                         uint16_t               want,
+                         uint8_t                load,
+                         uint32_t               data_len,
+                         const uint8_t         *data)
+{
+    static const xcb_protocol_request_t xcb_req = {
+        .count = 4,
+        .ext = &xcb_xkb_id,
+        .opcode = XCB_XKB_GET_KBD_BY_NAME,
+        .isvoid = 0
+    };
+
+    struct iovec xcb_parts[6];
+    xcb_xkb_get_kbd_by_name_cookie_t xcb_ret;
+    xcb_xkb_get_kbd_by_name_request_t xcb_out;
+
+    xcb_out.deviceSpec = deviceSpec;
+    xcb_out.need = need;
+    xcb_out.want = want;
+    xcb_out.load = load;
+    xcb_out.pad0 = 0;
+
+    xcb_parts[2].iov_base = (char *) &xcb_out;
+    xcb_parts[2].iov_len = sizeof(xcb_out);
+    xcb_parts[3].iov_base = 0;
+    xcb_parts[3].iov_len = -xcb_parts[2].iov_len & 3;
+    /* uint8_t data */
+    xcb_parts[4].iov_base = (char *) data;
+    xcb_parts[4].iov_len = data_len * sizeof(uint8_t);
+    xcb_parts[5].iov_base = 0;
+    xcb_parts[5].iov_len = -xcb_parts[4].iov_len & 3;
+
+    xcb_ret.sequence = xcb_send_request(c, XCB_REQUEST_CHECKED, xcb_parts + 2, &xcb_req);
+    return xcb_ret;
+}
+
+xcb_xkb_get_kbd_by_name_cookie_t
+xcb_xkb_get_kbd_by_name_2_unchecked (xcb_connection_t      *c,
+                                   xcb_xkb_device_spec_t  deviceSpec,
+                                   uint16_t               need,
+                                   uint16_t               want,
+                                   uint8_t                load,
+                                   uint32_t               data_len,
+                                   const uint8_t         *data)
+{
+    static const xcb_protocol_request_t xcb_req = {
+        .count = 4,
+        .ext = &xcb_xkb_id,
+        .opcode = XCB_XKB_GET_KBD_BY_NAME,
+        .isvoid = 0
+    };
+
+    struct iovec xcb_parts[6];
+    xcb_xkb_get_kbd_by_name_cookie_t xcb_ret;
+    xcb_xkb_get_kbd_by_name_request_t xcb_out;
+
+    xcb_out.deviceSpec = deviceSpec;
+    xcb_out.need = need;
+    xcb_out.want = want;
+    xcb_out.load = load;
+    xcb_out.pad0 = 0;
+
+    xcb_parts[2].iov_base = (char *) &xcb_out;
+    xcb_parts[2].iov_len = sizeof(xcb_out);
+    xcb_parts[3].iov_base = 0;
+    xcb_parts[3].iov_len = -xcb_parts[2].iov_len & 3;
+    /* uint8_t data */
+    xcb_parts[4].iov_base = (char *) data;
+    xcb_parts[4].iov_len = data_len * sizeof(uint8_t);
+    xcb_parts[5].iov_base = 0;
+    xcb_parts[5].iov_len = -xcb_parts[4].iov_len & 3;
+
+    xcb_ret.sequence = xcb_send_request(c, 0, xcb_parts + 2, &xcb_req);
+    return xcb_ret;
+}

hw/xnest/xnest-xcb.h

@@ -0,0 +1,157 @@
+/* SPDX-License-Identifier: MIT OR X11
+ *
+ * Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
+ */
+#ifndef __XNEST__XCB_H
+#define __XNEST__XCB_H
+
+#include <xcb/xcb.h>
+
+#include "include/list.h"
+
+typedef struct {
+    struct xorg_list entry;
+    xcb_generic_event_t *event;
+} xnestEventQueue;
+
+typedef struct {
+    xcb_connection_t *conn;
+    int screenId;
+    const xcb_screen_t *screenInfo;
+    const xcb_setup_t *setup;
+    xnestEventQueue eventQueue;
+} xnestUpstreamInfoRec;
+
+extern xnestUpstreamInfoRec xnestUpstreamInfo;
+
+/* connect to upstream X server */
+Bool xnest_upstream_setup(const char* displayName);
+
+/* retrieve upstream GC XID for our xserver GC */
+uint32_t xnestUpstreamGC(GCPtr pGC);
+
+typedef struct {
+    uint32_t background_pixmap;
+    uint32_t background_pixel;
+    uint32_t border_pixmap;
+    uint32_t border_pixel;
+    uint16_t bit_gravity;
+    uint16_t win_gravity;
+    uint16_t backing_store;
+    uint32_t backing_planes;
+    uint32_t backing_pixel;
+    Bool save_under;
+    uint32_t event_mask;
+    uint32_t do_not_propagate_mask;
+    Bool override_redirect;
+    uint32_t colormap;
+    uint32_t cursor;
+} XnSetWindowAttr;
+
+void xnest_encode_window_attr(XnSetWindowAttr attr, uint32_t mask, uint32_t *values);
+
+typedef struct {
+    int x, y;
+    int width, height;
+    int border_width;
+    uint32_t sibling;
+    int stack_mode;
+} XnWindowChanges;
+
+void xnest_configure_window(xcb_connection_t *conn, uint32_t window, uint32_t mask, XnWindowChanges values);
+
+typedef struct {
+    int key_click_percent;
+    int bell_percent;
+    int bell_pitch;
+    int bell_duration;
+    int led;
+    int led_mode;
+    int key;
+    int auto_repeat_mode;
+} XnKeyboardControl;
+
+typedef struct {
+    xcb_visualtype_t *upstreamVisual;
+    xcb_depth_t *upstreamDepth;
+    xcb_colormap_t upstreamCMap;
+    uint32_t ourXID;
+    VisualPtr ourVisual;
+} XnestVisualRec;
+
+extern XnestVisualRec *xnestVisualMap;
+extern int xnestNumVisualMap;
+
+void xnestEncodeKeyboardControl(XnKeyboardControl ctrl, long mask, uint32_t *value);
+
+typedef struct {
+        int function;           /* logical operation */
+        unsigned long plane_mask;/* plane mask */
+        unsigned long foreground;/* foreground pixel */
+        unsigned long background;/* background pixel */
+        int line_width;         /* line width */
+        int line_style;         /* LineSolid, LineOnOffDash, LineDoubleDash */
+        int cap_style;          /* CapNotLast, CapButt,
+                                   CapRound, CapProjecting */
+        int join_style;         /* JoinMiter, JoinRound, JoinBevel */
+        int fill_style;         /* FillSolid, FillTiled,
+                                   FillStippled, FillOpaqueStippled */
+        int fill_rule;          /* EvenOddRule, WindingRule */
+        int arc_mode;           /* ArcChord, ArcPieSlice */
+        xcb_pixmap_t tile;            /* tile pixmap for tiling operations */
+        xcb_pixmap_t stipple;         /* stipple 1 plane pixmap for stippling */
+        int ts_x_origin;        /* offset for tile or stipple operations */
+        int ts_y_origin;
+        xcb_font_t font;              /* default text font for text operations */
+        int subwindow_mode;     /* ClipByChildren, IncludeInferiors */
+        Bool graphics_exposures;/* boolean, should exposures be generated */
+        int clip_x_origin;      /* origin for clipping */
+        int clip_y_origin;
+        xcb_pixmap_t clip_mask;       /* bitmap clipping; other calls for rects */
+        int dash_offset;        /* patterned/dashed line information */
+        char dashes;
+} XnGCValues;
+
+void xnChangeGC(xcb_connection_t *conn, uint32_t gc, XnGCValues gcval, uint32_t mask);
+
+void xnestWMColormapWindows(xcb_connection_t *conn, xcb_window_t w, xcb_window_t *windows, int count);
+
+uint32_t xnestCreateBitmapFromData(xcb_connection_t *conn, uint32_t drawable,
+                                   const char *data, uint32_t width, uint32_t height);
+
+uint32_t xnestCreatePixmapFromBitmapData(xcb_connection_t *conn, uint32_t drawable,
+                                         const char *data, uint32_t width, uint32_t height,
+                                         uint32_t fg, uint32_t bg, uint16_t depth);
+
+void xnestSetCommand(xcb_connection_t *conn, xcb_window_t window, char ** argv, int argc);
+
+void xnestXkbInit(xcb_connection_t *conn);
+int xnestXkbDeviceId(xcb_connection_t *conn);
+
+xcb_get_keyboard_mapping_reply_t *xnestGetKeyboardMapping(
+    xcb_connection_t *conn,
+    int min_keycode,
+    int count
+);
+
+void xnestGetPointerControl(xcb_connection_t *conn, int *acc_num, int *acc_den, int *threshold);
+
+xRectangle xnestGetGeometry(xcb_connection_t *conn, uint32_t window);
+
+int xnestParseGeometry(const char *string, xRectangle *geometry);
+
+uint32_t xnest_visual_map_to_host(VisualID visual);
+uint32_t xnestHostVisualToHostCmap(uint32_t visual);
+uint32_t xnestVisualToHostCmap(uint32_t visual);
+
+typedef struct {
+    xcb_query_font_reply_t *font_reply;
+    xcb_font_t font_id;
+    xcb_charinfo_t *chars;
+    uint16_t chars_len;
+} xnestPrivFont;
+
+int xnestTextWidth (xnestPrivFont *font, const char *string, int count);
+int xnestTextWidth16 (xnestPrivFont *font, const uint16_t *string, int count);
+
+#endif /* __XNEST__XCB_H */

hw/xnest/xnest-xkb.h

@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: MIT OR X11
+ *
+ * Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
+ */
+#ifndef __XNEST__XKB_H
+#define __XNEST__XKB_H
+
+#include <xcb/xcb.h>
+#include <xcb/xkb.h>
+
+xcb_xkb_get_kbd_by_name_cookie_t
+xcb_xkb_get_kbd_by_name_2 (xcb_connection_t      *c,
+                         xcb_xkb_device_spec_t  deviceSpec,
+                         uint16_t               need,
+                         uint16_t               want,
+                         uint8_t                load,
+                         uint32_t               data_len,
+                         const uint8_t         *data);
+
+xcb_xkb_get_kbd_by_name_cookie_t
+xcb_xkb_get_kbd_by_name_2_unchecked (xcb_connection_t      *c,
+                                   xcb_xkb_device_spec_t  deviceSpec,
+                                   uint16_t               need,
+                                   uint16_t               want,
+                                   uint8_t                load,
+                                   uint32_t               data_len,
+                                   const uint8_t         *data);
+
+#endif /* __XNEST__XKB_H */

meson.build

@@ -245,20 +245,6 @@ endif
 
 ## configure Xnest - nesting X server
 build_xnest = get_option('xnest') != 'false'
-xnest_required = get_option('xnest') == 'true'
-xnest_dep = [
-    dependency('xext', version: xext_req, required: xnest_required),
-    dependency('x11', required: xnest_required),
-    dependency('xau', required: xnest_required),
-]
-if get_option('xnest') == 'auto'
-    # check for all the deps being found, to handle 'auto' mode.
-    foreach d: xnest_dep
-        if not d.found()
-            build_xnest = false
-        endif
-    endforeach
-endif
 
 build_xwin = false
 if get_option('xwin') == 'auto'