300 lines
8.1 KiB
C
300 lines
8.1 KiB
C
/*
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* Copyright © 1998 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "fb.h"
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Bool
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fbCloseScreen (int index, ScreenPtr pScreen)
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{
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int d;
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DepthPtr depths = pScreen->allowedDepths;
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for (d = 0; d < pScreen->numDepths; d++)
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xfree (depths[d].vids);
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xfree (depths);
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xfree (pScreen->visuals);
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xfree (pScreen->devPrivate);
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#ifdef FB_SCREEN_PRIVATE
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xfree (dixLookupPrivate(&pScreen->devPrivates, fbGetScreenPrivateKey()));
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#endif
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return TRUE;
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}
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Bool
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fbRealizeFont(ScreenPtr pScreen, FontPtr pFont)
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{
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return (TRUE);
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}
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Bool
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fbUnrealizeFont(ScreenPtr pScreen, FontPtr pFont)
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{
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return (TRUE);
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}
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void
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fbQueryBestSize (int class,
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unsigned short *width, unsigned short *height,
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ScreenPtr pScreen)
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{
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unsigned short w;
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switch (class) {
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case CursorShape:
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if (*width > pScreen->width)
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*width = pScreen->width;
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if (*height > pScreen->height)
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*height = pScreen->height;
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break;
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case TileShape:
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case StippleShape:
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w = *width;
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if ((w & (w - 1)) && w < FB_UNIT)
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{
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for (w = 1; w < *width; w <<= 1)
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;
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*width = w;
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}
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}
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}
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PixmapPtr
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_fbGetWindowPixmap (WindowPtr pWindow)
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{
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return fbGetWindowPixmap (pWindow);
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}
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void
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_fbSetWindowPixmap (WindowPtr pWindow, PixmapPtr pPixmap)
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{
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#ifdef FB_NO_WINDOW_PIXMAPS
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FatalError ("Attempted to set window pixmap without fb support\n");
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#else
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dixSetPrivate(&pWindow->devPrivates, fbGetWinPrivateKey(), pPixmap);
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#endif
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}
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Bool
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fbSetupScreen(ScreenPtr pScreen,
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pointer pbits, /* pointer to screen bitmap */
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int xsize, /* in pixels */
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int ysize,
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int dpix, /* dots per inch */
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int dpiy,
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int width, /* pixel width of frame buffer */
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int bpp) /* bits per pixel for screen */
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{
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if (!fbAllocatePrivates(pScreen, NULL))
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return FALSE;
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pScreen->defColormap = FakeClientID(0);
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/* let CreateDefColormap do whatever it wants for pixels */
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pScreen->blackPixel = pScreen->whitePixel = (Pixel) 0;
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pScreen->QueryBestSize = fbQueryBestSize;
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/* SaveScreen */
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pScreen->GetImage = fbGetImage;
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pScreen->GetSpans = fbGetSpans;
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pScreen->CreateWindow = fbCreateWindow;
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pScreen->DestroyWindow = fbDestroyWindow;
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pScreen->PositionWindow = fbPositionWindow;
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pScreen->ChangeWindowAttributes = fbChangeWindowAttributes;
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pScreen->RealizeWindow = fbMapWindow;
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pScreen->UnrealizeWindow = fbUnmapWindow;
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pScreen->CopyWindow = fbCopyWindow;
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pScreen->CreatePixmap = fbCreatePixmap;
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pScreen->DestroyPixmap = fbDestroyPixmap;
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pScreen->RealizeFont = fbRealizeFont;
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pScreen->UnrealizeFont = fbUnrealizeFont;
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pScreen->CreateGC = fbCreateGC;
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pScreen->CreateColormap = fbInitializeColormap;
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pScreen->DestroyColormap = (void (*)(ColormapPtr))NoopDDA;
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pScreen->InstallColormap = fbInstallColormap;
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pScreen->UninstallColormap = fbUninstallColormap;
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pScreen->ListInstalledColormaps = fbListInstalledColormaps;
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pScreen->StoreColors = (void (*)(ColormapPtr, int, xColorItem *))NoopDDA;
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pScreen->ResolveColor = fbResolveColor;
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pScreen->BitmapToRegion = fbPixmapToRegion;
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pScreen->GetWindowPixmap = _fbGetWindowPixmap;
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pScreen->SetWindowPixmap = _fbSetWindowPixmap;
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return TRUE;
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}
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#ifdef FB_ACCESS_WRAPPER
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Bool
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wfbFinishScreenInit(ScreenPtr pScreen,
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pointer pbits,
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int xsize,
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int ysize,
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int dpix,
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int dpiy,
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int width,
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int bpp,
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SetupWrapProcPtr setupWrap,
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FinishWrapProcPtr finishWrap)
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#else
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Bool
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fbFinishScreenInit(ScreenPtr pScreen,
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pointer pbits,
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int xsize,
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int ysize,
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int dpix,
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int dpiy,
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int width,
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int bpp)
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#endif
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{
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VisualPtr visuals;
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DepthPtr depths;
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int nvisuals;
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int ndepths;
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int rootdepth;
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VisualID defaultVisual;
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int imagebpp = bpp;
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#ifdef FB_DEBUG
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int stride;
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ysize -= 2;
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stride = (width * bpp) / 8;
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fbSetBits ((FbStip *) pbits,
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stride / sizeof (FbStip), FB_HEAD_BITS);
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pbits = (void *) ((char *) pbits + stride);
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fbSetBits ((FbStip *) ((char *) pbits + stride * ysize),
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stride / sizeof (FbStip), FB_TAIL_BITS);
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#endif
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/*
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* By default, a 24bpp screen will use 32bpp images, this avoids
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* problems with many applications which just can't handle packed
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* pixels. If you want real 24bit images, include a 24bpp
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* format in the pixmap formats
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*/
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#ifdef FB_24_32BIT
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if (bpp == 24)
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{
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int f;
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imagebpp = 32;
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/*
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* Check to see if we're advertising a 24bpp image format,
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* in which case windows will use it in preference to a 32 bit
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* format.
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*/
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for (f = 0; f < screenInfo.numPixmapFormats; f++)
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{
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if (screenInfo.formats[f].bitsPerPixel == 24)
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{
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imagebpp = 24;
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break;
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}
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}
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}
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#endif
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#ifdef FB_SCREEN_PRIVATE
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if (imagebpp == 32)
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{
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fbGetScreenPrivate(pScreen)->win32bpp = bpp;
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fbGetScreenPrivate(pScreen)->pix32bpp = bpp;
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}
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else
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{
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fbGetScreenPrivate(pScreen)->win32bpp = 32;
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fbGetScreenPrivate(pScreen)->pix32bpp = 32;
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}
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#ifdef FB_ACCESS_WRAPPER
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fbGetScreenPrivate(pScreen)->setupWrap = setupWrap;
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fbGetScreenPrivate(pScreen)->finishWrap = finishWrap;
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#endif
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#endif
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rootdepth = 0;
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if (!fbInitVisuals (&visuals, &depths, &nvisuals, &ndepths, &rootdepth,
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&defaultVisual,((unsigned long)1<<(imagebpp-1)), 8))
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return FALSE;
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if (! miScreenInit(pScreen, pbits, xsize, ysize, dpix, dpiy, width,
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rootdepth, ndepths, depths,
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defaultVisual, nvisuals, visuals))
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return FALSE;
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/* overwrite miCloseScreen with our own */
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pScreen->CloseScreen = fbCloseScreen;
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#ifdef FB_24_32BIT
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if (bpp == 24 && imagebpp == 32)
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{
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pScreen->ModifyPixmapHeader = fb24_32ModifyPixmapHeader;
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pScreen->CreateScreenResources = fb24_32CreateScreenResources;
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}
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#endif
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#if 0
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/* leave backing store initialization to the enclosing code so
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* it can choose the correct order of wrappers
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*/
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/* init backing store here so we can overwrite CloseScreen without stepping
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* on the backing store wrapped version */
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fbInitializeBackingStore (pScreen);
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#endif
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return TRUE;
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}
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/* dts * (inch/dot) * (25.4 mm / inch) = mm */
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#ifdef FB_ACCESS_WRAPPER
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Bool
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wfbScreenInit(ScreenPtr pScreen,
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pointer pbits,
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int xsize,
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int ysize,
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int dpix,
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int dpiy,
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int width,
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int bpp,
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SetupWrapProcPtr setupWrap,
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FinishWrapProcPtr finishWrap)
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{
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if (!fbSetupScreen(pScreen, pbits, xsize, ysize, dpix, dpiy, width, bpp))
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return FALSE;
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if (!wfbFinishScreenInit(pScreen, pbits, xsize, ysize, dpix, dpiy,
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width, bpp, setupWrap, finishWrap))
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return FALSE;
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return TRUE;
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}
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#else
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Bool
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fbScreenInit(ScreenPtr pScreen,
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pointer pbits,
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int xsize,
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int ysize,
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int dpix,
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int dpiy,
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int width,
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int bpp)
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{
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if (!fbSetupScreen(pScreen, pbits, xsize, ysize, dpix, dpiy, width, bpp))
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return FALSE;
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if (!fbFinishScreenInit(pScreen, pbits, xsize, ysize, dpix, dpiy,
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width, bpp))
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return FALSE;
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return TRUE;
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}
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#endif
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