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xserver/hw/xwin/winshadgdi.c

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/*
*Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
*
*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 XFREE86 PROJECT 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 XFree86 Project
*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 XFree86 Project.
*
* Authors: Harold L Hunt II
*/
/* $XFree86: xc/programs/Xserver/hw/xwin/winshadgdi.c,v 1.21 2002/10/17 08:18:25 alanh Exp $ */
#include "win.h"
/*
* Local function prototypes
*/
BOOL CALLBACK
winRedrawAllProcShadowGDI (HWND hwnd, LPARAM lParam);
/*
* Internal function to get the DIB format that is compatible with the screen
*/
static
Bool
winQueryScreenDIBFormat (ScreenPtr pScreen, BITMAPINFOHEADER *pbmih)
{
winScreenPriv(pScreen);
HBITMAP hbmp;
#if CYGDEBUG
LPDWORD pdw = NULL;
#endif
/* Create a memory bitmap compatible with the screen */
hbmp = CreateCompatibleBitmap (pScreenPriv->hdcScreen, 1, 1);
if (hbmp == NULL)
{
ErrorF ("winQueryScreenDIBFormat - CreateCompatibleBitmap failed\n");
return FALSE;
}
/* Initialize our bitmap info header */
ZeroMemory (pbmih, sizeof (BITMAPINFOHEADER) + 256 * sizeof (RGBQUAD));
pbmih->biSize = sizeof (BITMAPINFOHEADER);
/* Get the biBitCount */
if (!GetDIBits (pScreenPriv->hdcScreen,
hbmp,
0, 1,
NULL,
(BITMAPINFO*) pbmih,
DIB_RGB_COLORS))
{
ErrorF ("winQueryScreenDIBFormat - First call to GetDIBits failed\n");
DeleteObject (hbmp);
return FALSE;
}
#if CYGDEBUG
/* Get a pointer to bitfields */
pdw = (DWORD*) ((CARD8*)pbmih + sizeof (BITMAPINFOHEADER));
ErrorF ("winQueryScreenDIBFormat - First call masks: %08x %08x %08x\n",
pdw[0], pdw[1], pdw[2]);
#endif
/* Get optimal color table, or the optimal bitfields */
if (!GetDIBits (pScreenPriv->hdcScreen,
hbmp,
0, 1,
NULL,
(BITMAPINFO*)pbmih,
DIB_RGB_COLORS))
{
ErrorF ("winQueryScreenDIBFormat - Second call to GetDIBits "
"failed\n");
DeleteObject (hbmp);
return FALSE;
}
/* Free memory */
DeleteObject (hbmp);
return TRUE;
}
/*
* Internal function to determine the GDI bits per rgb and bit masks
*/
static
Bool
winQueryRGBBitsAndMasks (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
BITMAPINFOHEADER *pbmih = NULL;
Bool fReturn = TRUE;
LPDWORD pdw = NULL;
DWORD dwRedBits, dwGreenBits, dwBlueBits;
/* Color masks for 8 bpp are standardized */
if (GetDeviceCaps (pScreenPriv->hdcScreen, RASTERCAPS) & RC_PALETTE)
{
/*
* RGB BPP for 8 bit palletes is always 8
* and the color masks are always 0.
*/
pScreenPriv->dwBitsPerRGB = 8;
pScreenPriv->dwRedMask = 0x0L;
pScreenPriv->dwGreenMask = 0x0L;
pScreenPriv->dwBlueMask = 0x0L;
return TRUE;
}
/* Color masks for 24 bpp are standardized */
if (GetDeviceCaps (pScreenPriv->hdcScreen, PLANES)
* GetDeviceCaps (pScreenPriv->hdcScreen, BITSPIXEL) == 24)
{
ErrorF ("winQueryRGBBitsAndMasks - GetDeviceCaps (BITSPIXEL) "
"returned 24 for the screen. Using default 24bpp masks.\n");
/* 8 bits per primary color */
pScreenPriv->dwBitsPerRGB = 8;
/* Set screen privates masks */
pScreenPriv->dwRedMask = WIN_24BPP_MASK_RED;
pScreenPriv->dwGreenMask = WIN_24BPP_MASK_GREEN;
pScreenPriv->dwBlueMask = WIN_24BPP_MASK_BLUE;
return TRUE;
}
/* Allocate a bitmap header and color table */
pbmih = (BITMAPINFOHEADER*) malloc (sizeof (BITMAPINFOHEADER)
+ 256 * sizeof (RGBQUAD));
if (pbmih == NULL)
{
ErrorF ("winQueryRGBBitsAndMasks - malloc failed\n");
return FALSE;
}
/* Get screen description */
if (winQueryScreenDIBFormat (pScreen, pbmih))
{
/* Get a pointer to bitfields */
pdw = (DWORD*) ((CARD8*)pbmih + sizeof (BITMAPINFOHEADER));
#if CYGDEBUG
ErrorF ("winQueryRGBBitsAndMasks - Masks: %08x %08x %08x\n",
pdw[0], pdw[1], pdw[2]);
#endif
/* Count the number of bits in each mask */
dwRedBits = winCountBits (pdw[0]);
dwGreenBits = winCountBits (pdw[1]);
dwBlueBits = winCountBits (pdw[2]);
/* Find maximum bits per red, green, blue */
if (dwRedBits > dwGreenBits && dwRedBits > dwBlueBits)
pScreenPriv->dwBitsPerRGB = dwRedBits;
else if (dwGreenBits > dwRedBits && dwGreenBits > dwBlueBits)
pScreenPriv->dwBitsPerRGB = dwGreenBits;
else
pScreenPriv->dwBitsPerRGB = dwBlueBits;
/* Set screen privates masks */
pScreenPriv->dwRedMask = pdw[0];
pScreenPriv->dwGreenMask = pdw[1];
pScreenPriv->dwBlueMask = pdw[2];
}
else
{
ErrorF ("winQueryRGBBitsAndMasks - winQueryScreenDIBFormat failed\n");
free (pbmih);
fReturn = FALSE;
}
/* Free memory */
free (pbmih);
return fReturn;
}
/*
* Redraw all ---?
*/
BOOL CALLBACK
winRedrawAllProcShadowGDI (HWND hwnd, LPARAM lParam)
{
char strClassName[100];
if (GetClassName (hwnd, strClassName, 100))
{
if (strncmp (WINDOW_CLASS_X, strClassName, strlen (WINDOW_CLASS_X)) == 0)
{
InvalidateRect (hwnd, NULL, FALSE);
UpdateWindow (hwnd);
}
}
return TRUE;
}
/*
* Allocate a DIB for the shadow framebuffer GDI server
*/
Bool
winAllocateFBShadowGDI (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
BITMAPINFOHEADER *pbmih = NULL;
DIBSECTION dibsection;
Bool fReturn = TRUE;
/* Get device contexts for the screen and shadow bitmap */
pScreenPriv->hdcScreen = GetDC (pScreenPriv->hwndScreen);
pScreenPriv->hdcShadow = CreateCompatibleDC (pScreenPriv->hdcScreen);
/* Allocate bitmap info header */
pbmih = (BITMAPINFOHEADER*) malloc (sizeof (BITMAPINFOHEADER)
+ 256 * sizeof (RGBQUAD));
if (pbmih == NULL)
{
ErrorF ("winAllocateFBShadowGDI - malloc () failed\n");
return FALSE;
}
/* Query the screen format */
fReturn = winQueryScreenDIBFormat (pScreen, pbmih);
/* Describe shadow bitmap to be created */
pbmih->biWidth = pScreenInfo->dwWidth;
pbmih->biHeight = -pScreenInfo->dwHeight;
ErrorF ("winAllocateFBShadowGDI - Creating DIB with width: %d height: %d "
"depth: %d\n",
pbmih->biWidth, -pbmih->biHeight, pbmih->biBitCount);
/* Create a DI shadow bitmap with a bit pointer */
pScreenPriv->hbmpShadow = CreateDIBSection (pScreenPriv->hdcScreen,
(BITMAPINFO *) pbmih,
DIB_RGB_COLORS,
(VOID**) &pScreenInfo->pfb,
NULL,
0);
if (pScreenPriv->hbmpShadow == NULL || pScreenInfo->pfb == NULL)
{
ErrorF ("winAllocateFBShadowGDI - CreateDIBSection failed\n");
return FALSE;
}
else
{
#if CYGDEBUG
ErrorF ("winAllocateFBShadowGDI - Shadow buffer allocated\n");
#endif
}
/* Get information about the bitmap that was allocated */
GetObject (pScreenPriv->hbmpShadow,
sizeof (dibsection),
&dibsection);
#if CYGDEBUG || YES
/* Print information about bitmap allocated */
ErrorF ("winAllocateFBShadowGDI - Dibsection width: %d height: %d "
"depth: %d size image: %d\n",
dibsection.dsBmih.biWidth, dibsection.dsBmih.biHeight,
dibsection.dsBmih.biBitCount,
dibsection.dsBmih.biSizeImage);
#endif
/* Select the shadow bitmap into the shadow DC */
SelectObject (pScreenPriv->hdcShadow,
pScreenPriv->hbmpShadow);
#if CYGDEBUG
ErrorF ("winAllocateFBShadowGDI - Attempting a shadow blit\n");
#endif
/* Do a test blit from the shadow to the screen, I think */
fReturn = BitBlt (pScreenPriv->hdcScreen,
0, 0,
pScreenInfo->dwWidth, pScreenInfo->dwHeight,
pScreenPriv->hdcShadow,
0, 0,
SRCCOPY);
if (fReturn)
{
#if CYGDEBUG
ErrorF ("winAllocateFBShadowGDI - Shadow blit success\n");
#endif
}
else
{
ErrorF ("winAllocateFBShadowGDI - Shadow blit failure\n");
return FALSE;
}
/* Look for height weirdness */
if (dibsection.dsBmih.biHeight < 0)
{
/* FIXME: Figure out why biHeight is sometimes negative */
ErrorF ("winAllocateFBShadowGDI - WEIRDNESS - biHeight "
"still negative: %d\n"
"winAllocateFBShadowGDI - WEIRDNESS - Flipping biHeight sign\n",
dibsection.dsBmih.biHeight);
dibsection.dsBmih.biHeight = -dibsection.dsBmih.biHeight;
}
/* Set screeninfo stride */
pScreenInfo->dwStride = ((dibsection.dsBmih.biSizeImage
/ dibsection.dsBmih.biHeight)
* 8) / pScreenInfo->dwBPP;
#if CYGDEBUG || YES
ErrorF ("winAllocateFBShadowGDI - Created shadow stride: %d\n",
pScreenInfo->dwStride);
#endif
/* See if the shadow bitmap will be larger than the DIB size limit */
if (pScreenInfo->dwWidth * pScreenInfo->dwHeight * pScreenInfo->dwBPP
>= WIN_DIB_MAXIMUM_SIZE)
{
ErrorF ("winAllocateFBShadowGDI - Requested DIB (bitmap) "
"will be larger than %d MB. The surface may fail to be "
"allocated on Windows 95, 98, or Me, due to a %d MB limit in "
"DIB size. This limit does not apply to Windows NT/2000, and "
"this message may be ignored on those platforms.\n",
WIN_DIB_MAXIMUM_SIZE_MB, WIN_DIB_MAXIMUM_SIZE_MB);
}
/* Determine our color masks */
if (!winQueryRGBBitsAndMasks (pScreen))
{
ErrorF ("winAllocateFBShadowGDI - winQueryRGBBitsAndMasks failed\n");
return FALSE;
}
/* Redraw all windows */
if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
return fReturn;
}
/*
* Blit the damaged regions of the shadow fb to the screen
*/
void
winShadowUpdateGDI (ScreenPtr pScreen,
shadowBufPtr pBuf)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
RegionPtr damage = &pBuf->damage;
DWORD dwBox = REGION_NUM_RECTS (damage);
BoxPtr pBox = REGION_RECTS (damage);
int x, y, w, h;
HRGN hrgnTemp = NULL, hrgnCombined = NULL;
#if WIN_UPDATE_STATS
static DWORD s_dwNonUnitRegions = 0;
static DWORD s_dwTotalUpdates = 0;
static DWORD s_dwTotalBoxes = 0;
#endif
/*
* Return immediately if the app is not active
* and we are fullscreen, or if we have a bad display depth
*/
if ((!pScreenPriv->fActive && pScreenInfo->fFullScreen)
|| pScreenPriv->fBadDepth) return;
#if WIN_UPDATE_STATS
++s_dwTotalUpdates;
s_dwTotalBoxes += dwBox;
if (dwBox != 1)
{
++s_dwNonUnitRegions;
ErrorF ("winShadowUpdatGDI - dwBox: %d\n", dwBox);
}
if ((s_dwTotalUpdates % 100) == 0)
ErrorF ("winShadowUpdateGDI - %d%% non-unity regions, avg boxes: %d "
"nu: %d tu: %d\n",
(s_dwNonUnitRegions * 100) / s_dwTotalUpdates,
s_dwTotalBoxes / s_dwTotalUpdates,
s_dwNonUnitRegions, s_dwTotalUpdates);
#endif /* WIN_UPDATE_STATS */
/*
* Handle small regions with multiple blits,
* handle large regions by creating a clipping region and
* doing a single blit constrained to that clipping region.
*/
if (pScreenInfo->dwClipUpdatesNBoxes == 0
|| dwBox < pScreenInfo->dwClipUpdatesNBoxes)
{
/* Loop through all boxes in the damaged region */
while (dwBox--)
{
/*
* Calculate x offset, y offset, width, and height for
* current damage box
*/
x = pBox->x1;
y = pBox->y1;
w = pBox->x2 - pBox->x1;
h = pBox->y2 - pBox->y1;
BitBlt (pScreenPriv->hdcScreen,
x, y,
w, h,
pScreenPriv->hdcShadow,
x, y,
SRCCOPY);
/* Get a pointer to the next box */
++pBox;
}
}
else
{
BoxPtr pBoxExtents = REGION_EXTENTS (pScreen, damage);
/* Compute a GDI region from the damaged region */
hrgnCombined = CreateRectRgn (pBox->x1, pBox->y1, pBox->x2, pBox->y2);
dwBox--;
pBox++;
while (dwBox--)
{
hrgnTemp = CreateRectRgn (pBox->x1, pBox->y1, pBox->x2, pBox->y2);
CombineRgn (hrgnCombined, hrgnCombined, hrgnTemp, RGN_OR);
DeleteObject (hrgnTemp);
pBox++;
}
/* Install the GDI region as a clipping region */
SelectClipRgn (pScreenPriv->hdcScreen, hrgnCombined);
DeleteObject (hrgnCombined);
hrgnCombined = NULL;
/*
* Blit the shadow buffer to the screen,
* constrained to the clipping region.
*/
BitBlt (pScreenPriv->hdcScreen,
pBoxExtents->x1, pBoxExtents->y1,
pBoxExtents->x2 - pBoxExtents->x1,
pBoxExtents->y2 - pBoxExtents->y1,
pScreenPriv->hdcShadow,
pBoxExtents->x1, pBoxExtents->y1,
SRCCOPY);
/* Reset the clip region */
SelectClipRgn (pScreenPriv->hdcScreen, NULL);
}
/* Redraw all windows */
if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
}
/* See Porting Layer Definition - p. 33 */
/*
* We wrap whatever CloseScreen procedure was specified by fb;
* a pointer to said procedure is stored in our privates.
*/
Bool
winCloseScreenShadowGDI (int nIndex, ScreenPtr pScreen)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
Bool fReturn;
#if CYGDEBUG
ErrorF ("winCloseScreenShadowGDI - Freeing screen resources\n");
#endif
/* Flag that the screen is closed */
pScreenPriv->fClosed = TRUE;
pScreenPriv->fActive = FALSE;
/* Call the wrapped CloseScreen procedure */
pScreen->CloseScreen = pScreenPriv->CloseScreen;
fReturn = (*pScreen->CloseScreen) (nIndex, pScreen);
/* Delete the window property */
RemoveProp (pScreenPriv->hwndScreen, WIN_SCR_PROP);
/* Free the shadow DC; which allows the bitmap to be freed */
DeleteDC (pScreenPriv->hdcShadow);
/* Free the shadow bitmap */
DeleteObject (pScreenPriv->hbmpShadow);
/* Free the screen DC */
ReleaseDC (pScreenPriv->hwndScreen, pScreenPriv->hdcScreen);
/* Delete tray icon, if we have one */
if (!pScreenInfo->fNoTrayIcon)
winDeleteNotifyIcon (pScreenPriv);
/* Free the exit confirmation dialog box, if it exists */
if (g_hDlgExit != NULL)
{
DestroyWindow (g_hDlgExit);
g_hDlgExit = NULL;
}
/* Kill our window */
if (pScreenPriv->hwndScreen)
{
DestroyWindow (pScreenPriv->hwndScreen);
pScreenPriv->hwndScreen = NULL;
}
/* Destroy the thread startup mutex */
pthread_mutex_destroy (&pScreenPriv->pmServerStarted);
/* Invalidate our screeninfo's pointer to the screen */
pScreenInfo->pScreen = NULL;
/* Invalidate the ScreenInfo's fb pointer */
pScreenInfo->pfb = NULL;
/* Free the screen privates for this screen */
free ((pointer) pScreenPriv);
return fReturn;
}
/*
* Tell mi what sort of visuals we need.
*
* Generally we only need one visual, as our screen can only
* handle one format at a time, I believe. You may want
* to verify that last sentence.
*/
Bool
winInitVisualsShadowGDI (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
/* Display debugging information */
ErrorF ("winInitVisualsShadowGDI - Masks %08x %08x %08x BPRGB %d d %d "
"bpp %d\n",
pScreenPriv->dwRedMask,
pScreenPriv->dwGreenMask,
pScreenPriv->dwBlueMask,
pScreenPriv->dwBitsPerRGB,
pScreenInfo->dwDepth,
pScreenInfo->dwBPP);
/* Create a single visual according to the Windows screen depth */
switch (pScreenInfo->dwDepth)
{
case 24:
case 16:
case 15:
#if defined(XFree86Server)
/* Setup the real visual */
if (!miSetVisualTypesAndMasks (pScreenInfo->dwDepth,
TrueColorMask,
pScreenPriv->dwBitsPerRGB,
-1,
pScreenPriv->dwRedMask,
pScreenPriv->dwGreenMask,
pScreenPriv->dwBlueMask))
{
ErrorF ("winInitVisualsShadowGDI - miSetVisualTypesAndMasks "
"failed\n");
return FALSE;
}
#if WIN_EMULATE_PSEUDO_SUPPORT
if (!pScreenInfo->fEmulatePseudo)
break;
/* Setup a pseudocolor visual */
if (!miSetVisualTypesAndMasks (8,
PseudoColorMask,
8,
-1,
0,
0,
0))
{
ErrorF ("winInitVisualsShadowGDI - miSetVisualTypesAndMasks "
"failed for PseudoColor\n");
return FALSE;
}
#endif
#else /* XFree86Server */
/* Setup the real visual */
if (!fbSetVisualTypesAndMasks (pScreenInfo->dwDepth,
TrueColorMask,
pScreenPriv->dwBitsPerRGB,
pScreenPriv->dwRedMask,
pScreenPriv->dwGreenMask,
pScreenPriv->dwBlueMask))
{
ErrorF ("winInitVisualsShadowGDI - fbSetVisualTypesAndMasks "
"failed for TrueColor\n");
return FALSE;
}
#if WIN_EMULATE_PSEUDO_SUPPORT
if (!pScreenInfo->fEmulatePseudo)
break;
/* Setup a pseudocolor visual */
if (!fbSetVisualTypesAndMasks (8,
PseudoColorMask,
8,
0,
0,
0))
{
ErrorF ("winInitVisualsShadowGDI - fbSetVisualTypesAndMasks "
"failed for PseudoColor\n");
return FALSE;
}
#endif
#endif /* XFree86Server */
break;
case 8:
#if defined(XFree86Server)
if (!miSetVisualTypesAndMasks (pScreenInfo->dwDepth,
PseudoColorMask,
pScreenPriv->dwBitsPerRGB,
PseudoColor,
pScreenPriv->dwRedMask,
pScreenPriv->dwGreenMask,
pScreenPriv->dwBlueMask))
{
ErrorF ("winInitVisualsShadowGDI - miSetVisualTypesAndMasks "
"failed\n");
return FALSE;
}
#else /* XFree86Server */
if (!fbSetVisualTypesAndMasks (pScreenInfo->dwDepth,
PseudoColorMask,
pScreenPriv->dwBitsPerRGB,
pScreenPriv->dwRedMask,
pScreenPriv->dwGreenMask,
pScreenPriv->dwBlueMask))
{
ErrorF ("winInitVisualsShadowGDI - fbSetVisualTypesAndMasks "
"failed\n");
return FALSE;
}
#endif
break;
default:
ErrorF ("winInitVisualsShadowGDI - Unknown screen depth\n");
return FALSE;
}
#if CYGDEBUG
ErrorF ("winInitVisualsShadowGDI - Returning\n");
#endif
return TRUE;
}
/*
* Adjust the proposed video mode
*/
Bool
winAdjustVideoModeShadowGDI (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
HDC hdc;
DWORD dwBPP;
hdc = GetDC (NULL);
/* We're in serious trouble if we can't get a DC */
if (hdc == NULL)
{
ErrorF ("winAdjustVideoModeShadowGDI - GetDC () failed\n");
return FALSE;
}
/* Query GDI for current display depth */
dwBPP = GetDeviceCaps (hdc, BITSPIXEL);
/* GDI cannot change the screen depth */
if (pScreenInfo->dwBPP == WIN_DEFAULT_BPP)
{
/* No -depth parameter passed, let the user know the depth being used */
ErrorF ("winAdjustVideoModeShadowGDI - Using Windows display "
"depth of %d bits per pixel\n", dwBPP);
/* Use GDI's depth */
pScreenInfo->dwBPP = dwBPP;
}
else if (dwBPP != pScreenInfo->dwBPP)
{
/* Warn user if GDI depth is different than -depth parameter */
ErrorF ("winAdjustVideoModeShadowGDI - Command line bpp: %d, "\
"using bpp: %d\n", pScreenInfo->dwBPP, dwBPP);
/* We'll use GDI's depth */
pScreenInfo->dwBPP = dwBPP;
}
/* Release our DC */
ReleaseDC (NULL, hdc);
hdc = NULL;
return TRUE;
}
/*
* Blt exposed regions to the screen
*/
Bool
winBltExposedRegionsShadowGDI (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
winPrivCmapPtr pCmapPriv = NULL;
HDC hdcUpdate;
PAINTSTRUCT ps;
/* BeginPaint gives us an hdc that clips to the invalidated region */
hdcUpdate = BeginPaint (pScreenPriv->hwndScreen, &ps);
/* Realize the palette, if we have one */
if (pScreenPriv->pcmapInstalled != NULL)
{
pCmapPriv = winGetCmapPriv (pScreenPriv->pcmapInstalled);
SelectPalette (hdcUpdate, pCmapPriv->hPalette, FALSE);
RealizePalette (hdcUpdate);
}
/* Our BitBlt will be clipped to the invalidated region */
BitBlt (hdcUpdate,
0, 0,
pScreenInfo->dwWidth, pScreenInfo->dwHeight,
pScreenPriv->hdcShadow,
0, 0,
SRCCOPY);
/* EndPaint frees the DC */
EndPaint (pScreenPriv->hwndScreen, &ps);
/* Redraw all windows */
if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
return TRUE;
}
/*
* Do any engine-specific appliation-activation processing
*/
Bool
winActivateAppShadowGDI (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
#if CYGDEBUG
ErrorF ("winActivateAppShadowGDI\n");
#endif
/*
* Are we active?
* Are we fullscreen?
*/
if (pScreenPriv->fActive
&& pScreenInfo->fFullScreen)
{
/*
* Activating, attempt to bring our window
* to the top of the display
*/
ShowWindow (pScreenPriv->hwndScreen, SW_RESTORE);
}
else if (!pScreenPriv->fActive
&& pScreenInfo->fFullScreen)
{
/*
* Deactivating, stuff our window onto the
* task bar.
*/
ShowWindow (pScreenPriv->hwndScreen, SW_MINIMIZE);
}
#if CYGDEBUG
ErrorF ("winActivateAppShadowGDI - Returning\n");
#endif
return TRUE;
}
/*
* Reblit the shadow framebuffer to the screen.
*/
Bool
winRedrawScreenShadowGDI (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
/* Redraw the whole window, to take account for the new colors */
BitBlt (pScreenPriv->hdcScreen,
0, 0,
pScreenInfo->dwWidth, pScreenInfo->dwHeight,
pScreenPriv->hdcShadow,
0, 0,
SRCCOPY);
/* Redraw all windows */
if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
return TRUE;
}
/*
* Realize the currently installed colormap
*/
Bool
winRealizeInstalledPaletteShadowGDI (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
winPrivCmapPtr pCmapPriv = NULL;
#if CYGDEBUG
ErrorF ("winRealizeInstalledPaletteShadowGDI\n");
#endif
/* Don't do anything if there is not a colormap */
if (pScreenPriv->pcmapInstalled == NULL)
{
#if CYGDEBUG
ErrorF ("winRealizeInstalledPaletteShadowGDI - No colormap "
"installed\n");
#endif
return TRUE;
}
pCmapPriv = winGetCmapPriv (pScreenPriv->pcmapInstalled);
/* Realize our palette for the screen */
if (RealizePalette (pScreenPriv->hdcScreen) == GDI_ERROR)
{
ErrorF ("winRealizeInstalledPaletteShadowGDI - RealizePalette () "
"failed\n");
return FALSE;
}
/* Set the DIB color table */
if (SetDIBColorTable (pScreenPriv->hdcShadow,
0,
WIN_NUM_PALETTE_ENTRIES,
pCmapPriv->rgbColors) == 0)
{
ErrorF ("winRealizeInstalledPaletteShadowGDI - SetDIBColorTable () "
"failed\n");
return FALSE;
}
return TRUE;
}
/*
* Install the specified colormap
*/
Bool
winInstallColormapShadowGDI (ColormapPtr pColormap)
{
ScreenPtr pScreen = pColormap->pScreen;
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
winCmapPriv(pColormap);
/*
* Tell Windows to install the new colormap
*/
if (SelectPalette (pScreenPriv->hdcScreen,
pCmapPriv->hPalette,
FALSE) == NULL)
{
ErrorF ("winInstallColormapShadowGDI - SelectPalette () failed\n");
return FALSE;
}
/* Realize the palette */
if (GDI_ERROR == RealizePalette (pScreenPriv->hdcScreen))
{
ErrorF ("winInstallColormapShadowGDI - RealizePalette () failed\n");
return FALSE;
}
/* Set the DIB color table */
if (SetDIBColorTable (pScreenPriv->hdcShadow,
0,
WIN_NUM_PALETTE_ENTRIES,
pCmapPriv->rgbColors) == 0)
{
ErrorF ("winInstallColormapShadowGDI - SetDIBColorTable () failed\n");
return FALSE;
}
/* Redraw the whole window, to take account for the new colors */
BitBlt (pScreenPriv->hdcScreen,
0, 0,
pScreenInfo->dwWidth, pScreenInfo->dwHeight,
pScreenPriv->hdcShadow,
0, 0,
SRCCOPY);
/* Save a pointer to the newly installed colormap */
pScreenPriv->pcmapInstalled = pColormap;
/* Redraw all windows */
if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
return TRUE;
}
/*
* Store the specified colors in the specified colormap
*/
Bool
winStoreColorsShadowGDI (ColormapPtr pColormap,
int ndef,
xColorItem *pdefs)
{
ScreenPtr pScreen = pColormap->pScreen;
winScreenPriv(pScreen);
winCmapPriv(pColormap);
ColormapPtr curpmap = pScreenPriv->pcmapInstalled;
/* Put the X colormap entries into the Windows logical palette */
if (SetPaletteEntries (pCmapPriv->hPalette,
pdefs[0].pixel,
ndef,
pCmapPriv->peColors + pdefs[0].pixel) == 0)
{
ErrorF ("winStoreColorsShadowGDI - SetPaletteEntries () failed\n");
return FALSE;
}
/* Don't install the Windows palette if the colormap is not installed */
if (pColormap != curpmap)
{
return TRUE;
}
/* Try to install the newly modified colormap */
if (!winInstallColormapShadowGDI (pColormap))
{
ErrorF ("winInstallColormapShadowGDI - winInstallColormapShadowGDI "
"failed\n");
return FALSE;
}
#if 0
/* Tell Windows that the palette has changed */
RealizePalette (pScreenPriv->hdcScreen);
/* Set the DIB color table */
if (SetDIBColorTable (pScreenPriv->hdcShadow,
pdefs[0].pixel,
ndef,
pCmapPriv->rgbColors + pdefs[0].pixel) == 0)
{
ErrorF ("winInstallColormapShadowGDI - SetDIBColorTable () failed\n");
return FALSE;
}
/* Save a pointer to the newly installed colormap */
pScreenPriv->pcmapInstalled = pColormap;
#endif
return TRUE;
}
/*
* Colormap initialization procedure
*/
Bool
winCreateColormapShadowGDI (ColormapPtr pColormap)
{
LPLOGPALETTE lpPaletteNew = NULL;
DWORD dwEntriesMax;
VisualPtr pVisual;
HPALETTE hpalNew = NULL;
winCmapPriv(pColormap);
/* Get a pointer to the visual that the colormap belongs to */
pVisual = pColormap->pVisual;
/* Get the maximum number of palette entries for this visual */
dwEntriesMax = pVisual->ColormapEntries;
/* Allocate a Windows logical color palette with max entries */
lpPaletteNew = malloc (sizeof (LOGPALETTE)
+ (dwEntriesMax - 1) * sizeof (PALETTEENTRY));
if (lpPaletteNew == NULL)
{
ErrorF ("winCreateColormapShadowGDI - Couldn't allocate palette "
"with %d entries\n",
dwEntriesMax);
return FALSE;
}
/* Zero out the colormap */
ZeroMemory (lpPaletteNew, sizeof (LOGPALETTE)
+ (dwEntriesMax - 1) * sizeof (PALETTEENTRY));
/* Set the logical palette structure */
lpPaletteNew->palVersion = 0x0300;
lpPaletteNew->palNumEntries = dwEntriesMax;
/* Tell Windows to create the palette */
hpalNew = CreatePalette (lpPaletteNew);
if (hpalNew == NULL)
{
ErrorF ("winCreateColormapShadowGDI - CreatePalette () failed\n");
free (lpPaletteNew);
return FALSE;
}
/* Save the Windows logical palette handle in the X colormaps' privates */
pCmapPriv->hPalette = hpalNew;
/* Free the palette initialization memory */
free (lpPaletteNew);
return TRUE;
}
/*
* Colormap destruction procedure
*/
Bool
winDestroyColormapShadowGDI (ColormapPtr pColormap)
{
winScreenPriv(pColormap->pScreen);
winCmapPriv(pColormap);
/*
* Is colormap to be destroyed the default?
*
* Non-default colormaps should have had winUninstallColormap
* called on them before we get here. The default colormap
* will not have had winUninstallColormap called on it. Thus,
* we need to handle the default colormap in a special way.
*/
if (pColormap->flags & IsDefault)
{
#if CYGDEBUG
ErrorF ("winDestroyColormapShadowGDI - Destroying default "
"colormap\n");
#endif
/*
* FIXME: Walk the list of all screens, popping the default
* palette out of each screen device context.
*/
/* Pop the palette out of the device context */
SelectPalette (pScreenPriv->hdcScreen,
GetStockObject (DEFAULT_PALETTE),
FALSE);
/* Clear our private installed colormap pointer */
pScreenPriv->pcmapInstalled = NULL;
}
/* Try to delete the logical palette */
if (DeleteObject (pCmapPriv->hPalette) == 0)
{
ErrorF ("winDestroyColormap - DeleteObject () failed\n");
return FALSE;
}
/* Invalidate the colormap privates */
pCmapPriv->hPalette = NULL;
return TRUE;
}
/*
* Set engine specific funtions
*/
Bool
winSetEngineFunctionsShadowGDI (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
/* Set our pointers */
pScreenPriv->pwinAllocateFB = winAllocateFBShadowGDI;
pScreenPriv->pwinShadowUpdate = winShadowUpdateGDI;
pScreenPriv->pwinCloseScreen = winCloseScreenShadowGDI;
pScreenPriv->pwinInitVisuals = winInitVisualsShadowGDI;
pScreenPriv->pwinAdjustVideoMode = winAdjustVideoModeShadowGDI;
if (pScreenInfo->fFullScreen)
pScreenPriv->pwinCreateBoundingWindow = winCreateBoundingWindowFullScreen;
else
pScreenPriv->pwinCreateBoundingWindow = winCreateBoundingWindowWindowed;
pScreenPriv->pwinFinishScreenInit = winFinishScreenInitFB;
pScreenPriv->pwinBltExposedRegions = winBltExposedRegionsShadowGDI;
pScreenPriv->pwinActivateApp = winActivateAppShadowGDI;
pScreenPriv->pwinRedrawScreen = winRedrawScreenShadowGDI;
pScreenPriv->pwinRealizeInstalledPalette =
winRealizeInstalledPaletteShadowGDI;
pScreenPriv->pwinInstallColormap = winInstallColormapShadowGDI;
pScreenPriv->pwinStoreColors = winStoreColorsShadowGDI;
pScreenPriv->pwinCreateColormap = winCreateColormapShadowGDI;
pScreenPriv->pwinDestroyColormap = winDestroyColormapShadowGDI;
pScreenPriv->pwinHotKeyAltTab = (winHotKeyAltTabProcPtr) (void (*)())NoopDDA;
pScreenPriv->pwinCreatePrimarySurface
= (winCreatePrimarySurfaceProcPtr) (void (*)())NoopDDA;
pScreenPriv->pwinReleasePrimarySurface
= (winReleasePrimarySurfaceProcPtr) (void (*)())NoopDDA;
return TRUE;
}
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