[fireball] 42614: - Don't try to lock DC twice in BitBlt if it's a same DC. - Implement GetPixel operation (lacks color conversion!). - Implement SetPixel using the idea from trunk's win32k: create a solid brush and PatBlt it to the needed place. Return value needs to be checked though, what gdi32 expects from it.

Author: fireball
Date: Tue Aug 11 15:26:06 2009
New Revision: 42614

URL: http://svn.reactos.org/svn/reactos?rev=42614&view=rev
Log:
- Don't try to lock DC twice in BitBlt if it's a same DC.
- Implement GetPixel operation (lacks color conversion!).
- Implement SetPixel using the idea from trunk's win32k: create a solid brush and
PatBlt it to the needed place. Return value needs to be checked though, what gdi32 expects
from it.

Modified:
    branches/arwinss/reactos/subsystems/win32/win32k/gdi/bitmap.c
    branches/arwinss/reactos/subsystems/win32/win32k/gdi/dc.c
    branches/arwinss/reactos/subsystems/win32/win32k/gre/surfobj.c
    branches/arwinss/reactos/subsystems/win32/win32k/include/gre.h
    branches/arwinss/reactos/subsystems/win32/win32k/include/palobj.h

Modified: branches/arwinss/reactos/subsystems/win32/win32k/gdi/bitmap.c
URL:
http://svn.reactos.org/svn/reactos/branches/arwinss/reactos/subsystems/win3…
==============================================================================
--- branches/arwinss/reactos/subsystems/win32/win32k/gdi/bitmap.c [iso-8859-1] (original)
+++ branches/arwinss/reactos/subsystems/win32/win32k/gdi/bitmap.c [iso-8859-1] Tue Aug 11
15:26:06 2009
@@ -36,13 +36,16 @@
 
     /* Get a pointer to the DCs */
     pSrc = DC_Lock(physDevSrc);
-    pDst = DC_Lock(physDevDst);
+    if (physDevSrc != physDevDst)
+        pDst = DC_Lock(physDevDst);
+    else
+        pDst = pSrc;
 
     /* Call the internal helper */
     bRes = GreBitBlt(pDst, xDst, yDst, width, height, pSrc, xSrc, ySrc, rop);
 
     /* Release DC objects */
-    DC_Unlock(pDst);
+    if (physDevSrc != physDevDst) DC_Unlock(pDst);
     DC_Unlock(pSrc);
 
     /* Return status */
@@ -227,8 +230,33 @@
 
 COLORREF APIENTRY RosGdiGetPixel( HDC physDev, INT x, INT y )
 {
-    UNIMPLEMENTED;
-    return 0;
+    PDC pDC;
+    COLORREF crPixel;
+
+    /* Get a pointer to the DC */
+    pDC = DC_Lock(physDev);
+
+    crPixel = GreGetPixel(pDC, x, y);
+
+    /* Release DC */
+    DC_Unlock(pDC);
+
+    return crPixel;
+}
+
+COLORREF APIENTRY RosGdiSetPixel( HDC physDev, INT x, INT y, COLORREF color )
+{
+    PDC pDC;
+
+    /* Get a pointer to the DC */
+    pDC = DC_Lock(physDev);
+
+    GreSetPixel(pDC, x, y, color);
+
+    /* Release DC */
+    DC_Unlock(pDC);
+
+    return color;
 }
 
 BOOL APIENTRY RosGdiPatBlt( HDC physDev, INT left, INT top, INT width, INT height, DWORD
rop )

Modified: branches/arwinss/reactos/subsystems/win32/win32k/gdi/dc.c
URL:
http://svn.reactos.org/svn/reactos/branches/arwinss/reactos/subsystems/win3…
==============================================================================
--- branches/arwinss/reactos/subsystems/win32/win32k/gdi/dc.c [iso-8859-1] (original)
+++ branches/arwinss/reactos/subsystems/win32/win32k/gdi/dc.c [iso-8859-1] Tue Aug 11
15:26:06 2009
@@ -484,12 +484,6 @@
     return FALSE;
 }
 
-COLORREF APIENTRY RosGdiSetPixel( HDC physDev, INT x, INT y, COLORREF color )
-{
-    UNIMPLEMENTED;
-    return 0;
-}
-
 BOOL APIENTRY RosGdiSetPixelFormat(HDC physDev,
                                    int iPixelFormat,
                                    const PIXELFORMATDESCRIPTOR *ppfd)

Modified: branches/arwinss/reactos/subsystems/win32/win32k/gre/surfobj.c
URL:
http://svn.reactos.org/svn/reactos/branches/arwinss/reactos/subsystems/win3…
==============================================================================
--- branches/arwinss/reactos/subsystems/win32/win32k/gre/surfobj.c [iso-8859-1]
(original)
+++ branches/arwinss/reactos/subsystems/win32/win32k/gre/surfobj.c [iso-8859-1] Tue Aug 11
15:26:06 2009
@@ -238,3 +238,65 @@
     /* Return amount copied */
     return ulBytes;
 }
+
+COLORREF
+NTAPI
+GreGetPixel(
+    PDC pDC,
+    UINT x,
+    UINT y)
+{
+    COLORREF crPixel = (COLORREF)CLR_INVALID;
+    PSURFACE psurf;
+    SURFOBJ *pso;
+
+    /* Offset coordinate by DC origin */
+    x += pDC->rcVport.left + pDC->rcDcRect.left;
+    y += pDC->rcVport.top + pDC->rcDcRect.top;
+
+    /* If points is outside combined clipping region - return error */
+    if (!RECTL_bPointInRect(&pDC->CombinedClip->rclBounds, x, y))
+        return CLR_INVALID;
+
+    /* Get DC's surface */
+    psurf = pDC->pBitmap;
+
+    if (!psurf) return CLR_INVALID;
+
+    pso = &psurf->SurfObj;
+
+    /* Actually get the pixel */
+    if (pso->pvScan0)
+    {
+        ASSERT(pso->lDelta);
+
+        // FIXME: Translate the color?
+        crPixel = DibFunctionsForBitmapFormat[pso->iBitmapFormat].DIB_GetPixel(pso, x,
y);
+    }
+
+    /* Return found pixel color */
+    return crPixel;
+}
+
+VOID
+NTAPI
+GreSetPixel(
+    PDC pDC,
+    UINT x,
+    UINT y,
+    COLORREF crColor)
+{
+    PBRUSHGDI pOldBrush = pDC->pFillBrush;
+
+    /* Create a solid brush with this color */
+    pDC->pFillBrush = GreCreateSolidBrush(crColor);
+
+    /* Put pixel */
+    GrePatBlt(pDC, x, y, 1, 1, PATCOPY, pDC->pFillBrush);
+
+    /* Free the created brush */
+    GreFreeBrush(pDC->pFillBrush);
+
+    /* Restore the old brush */
+    pDC->pFillBrush = pOldBrush;
+}

Modified: branches/arwinss/reactos/subsystems/win32/win32k/include/gre.h
URL:
http://svn.reactos.org/svn/reactos/branches/arwinss/reactos/subsystems/win3…
==============================================================================
--- branches/arwinss/reactos/subsystems/win32/win32k/include/gre.h [iso-8859-1]
(original)
+++ branches/arwinss/reactos/subsystems/win32/win32k/include/gre.h [iso-8859-1] Tue Aug 11
15:26:06 2009
@@ -172,6 +172,23 @@
             y >= prcl->top  && y <= prcl->bottom);
 }
 
+/* surfobj.c */
+COLORREF
+NTAPI
+GreGetPixel(
+    PDC pDC,
+    UINT x,
+    UINT y);
+
+VOID
+NTAPI
+GreSetPixel(
+    PDC pDC,
+    UINT x,
+    UINT y,
+    COLORREF crColor);
+
+
 /* Private Eng functions */
 BOOL APIENTRY
 EngpStretchBlt(SURFOBJ *psoDest,

Modified: branches/arwinss/reactos/subsystems/win32/win32k/include/palobj.h
URL:
http://svn.reactos.org/svn/reactos/branches/arwinss/reactos/subsystems/win3…
==============================================================================
--- branches/arwinss/reactos/subsystems/win32/win32k/include/palobj.h [iso-8859-1]
(original)
+++ branches/arwinss/reactos/subsystems/win32/win32k/include/palobj.h [iso-8859-1] Tue Aug
11 15:26:06 2009
@@ -44,5 +44,7 @@
 #define  PALETTE_LockPalette(hPalette) ((PPALETTE)GDIOBJ_LockObj((HGDIOBJ)hPalette,
GDI_OBJECT_TYPE_PALETTE))
 #define  PALETTE_UnlockPalette(pPalette) GDIOBJ_UnlockObjByPtr((PBASEOBJECT)pPalette)
 
+#define  PALETTE_ShareLock(hpal) ((PPALETTE)GDIOBJ_ShareLockObj((HGDIOBJ)hpal,
GDI_OBJECT_TYPE_PALETTE))
+#define  PALETTE_ShareUnlock(ppal) GDIOBJ_ShareUnlockObjByPtr(&ppal->BaseObject)
 
 #endif