[fireball] 40331: - NtGdiSetDIBitsToDeviceInternal: use bitmap's palette if it exists instead of always using system palette. Based on a patch by Evgeniy Boltik from bug 4326. See issue #4326 for more details.

Author: fireball
Date: Thu Apr  2 21:25:56 2009
New Revision: 40331

URL: http://svn.reactos.org/svn/reactos?rev=40331&view=rev
Log:
- NtGdiSetDIBitsToDeviceInternal: use bitmap's palette if it exists instead of always
using system palette. Based on a patch by Evgeniy Boltik from bug 4326.

See issue #4326 for more details.

Modified:
    trunk/reactos/subsystems/win32/win32k/objects/dibobj.c

Modified: trunk/reactos/subsystems/win32/win32k/objects/dibobj.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/ob…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/objects/dibobj.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/objects/dibobj.c [iso-8859-1] Thu Apr  2
21:25:56 2009
@@ -437,6 +437,7 @@
     PDC pDC;
     HBITMAP hSourceBitmap = NULL;
     SURFOBJ *pDestSurf, *pSourceSurf = NULL;
+    SURFACE *pSurf;
     RECTL rcDest;
     POINTL ptSource;
     INT DIBWidth;
@@ -476,13 +477,18 @@
         return 0;
     }
 
+    /* Use destination palette obtained from the DC by default */
+    DDBPalette = pDC->ppdev->DevInfo.hpalDefault;
+
+    /* Try to use hDIBPalette if it exists */
+    pSurf = SURFACE_LockSurface(pDC->rosdc.hBitmap);
+    if (pSurf && pSurf->hDIBPalette)
+    {
+        DDBPalette = pSurf->hDIBPalette;
+        SURFACE_UnlockSurface(pSurf);
+    }
+
     pDestSurf = EngLockSurface((HSURF)pDC->rosdc.hBitmap);
-    if (!pDestSurf)
-    {
-        /* FIXME: SetLastError ? */
-        DC_UnlockDc(pDC);
-        return 0;
-    }
 
     rcDest.left = XDest;
     rcDest.top = YDest;
@@ -521,8 +527,8 @@
        goto Exit;
     }
 
-    /* Obtain destination palette from the DC */
-    pDCPalette = PALETTE_LockPalette(pDC->ppdev->DevInfo.hpalDefault);
+    /* Obtain destination palette */
+    pDCPalette = PALETTE_LockPalette(DDBPalette);
     if (!pDCPalette)
     {
        SetLastWin32Error(ERROR_INVALID_HANDLE);
@@ -531,7 +537,6 @@
     }
 
     DDBPaletteType = pDCPalette->Mode;
-    DDBPalette = pDC->ppdev->DevInfo.hpalDefault;
     PALETTE_UnlockPalette(pDCPalette);
 
     DIBPalette = BuildDIBPalette(bmi, (PINT)&DIBPaletteType);