[greatlrd] 21794: Bug : 1452 : patch from w3seek, some xlate obj fixes for indexed palettes, should fix a hack introduced in r21292

Author: greatlrd
Date: Thu May  4 09:23:54 2006
New Revision: 21794

URL: http://svn.reactos.ru/svn/reactos?rev=21794&view=rev
Log:
Bug : 1452  : patch from w3seek, some xlate obj fixes for indexed palettes, should fix a
hack introduced in r21292

Modified:
    trunk/reactos/subsystems/win32/win32k/eng/objects.h
    trunk/reactos/subsystems/win32/win32k/eng/xlate.c

Modified: trunk/reactos/subsystems/win32/win32k/eng/objects.h
URL:
http://svn.reactos.ru/svn/reactos/trunk/reactos/subsystems/win32/win32k/eng…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/eng/objects.h (original)
+++ trunk/reactos/subsystems/win32/win32k/eng/objects.h Thu May  4 09:23:54 2006
@@ -158,9 +158,6 @@
       INT GreenShift;
       INT BlueShift;
 //    };
-//    struct {            /* For Table Translations */
-      ULONG *translationTable;
-//    };
 //    struct {            /* For Color -> Mono Translations */
       ULONG BackgroundColor;
 //    };

Modified: trunk/reactos/subsystems/win32/win32k/eng/xlate.c
URL:
http://svn.reactos.ru/svn/reactos/trunk/reactos/subsystems/win32/win32k/eng…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/eng/xlate.c (original)
+++ trunk/reactos/subsystems/win32/win32k/eng/xlate.c Thu May  4 09:23:54 2006
@@ -181,6 +181,7 @@
    XlateObj->iSrcType = SourcePalType;
    XlateObj->iDstType = DestPalType;
    XlateObj->flXlate = 0;
+   XlateObj->cEntries = 0;
 
    /* Store handles of palettes in internal Xlate GDI object (or NULLs) */
    XlateGDI->SourcePal = PaletteSource;
@@ -237,34 +238,34 @@
    /* Indexed -> Indexed */
    if (SourcePalType == PAL_INDEXED && DestPalType == PAL_INDEXED)
    {
-      XlateGDI->translationTable =
-         EngAllocMem(0, sizeof(ULONG) * SourcePalGDI->NumColors, 0);
+      XlateObj->cEntries = SourcePalGDI->NumColors;
+      XlateObj->pulXlate =
+         EngAllocMem(0, sizeof(ULONG) * XlateObj->cEntries, 0);
 
       XlateObj->flXlate |= XO_TRIVIAL;
-      for (i = 0; i < SourcePalGDI->NumColors; i++)
+      for (i = 0; i < XlateObj->cEntries; i++)
       {
-         XlateGDI->translationTable[i] = ClosestColorMatch(
+         XlateObj->pulXlate[i] = ClosestColorMatch(
             XlateGDI, SourcePalGDI->IndexedColors + i,
-            DestPalGDI->IndexedColors, DestPalGDI->NumColors);
-         if (XlateGDI->translationTable[i] != i)
+            DestPalGDI->IndexedColors, XlateObj->cEntries);
+         if (XlateObj->pulXlate[i] != i)
             XlateObj->flXlate &= ~XO_TRIVIAL;
       }
 
       XlateObj->flXlate |= XO_TABLE;
-      XlateObj->pulXlate = XlateGDI->translationTable;
       goto end;
    }
 
    /* Indexed -> Bitfields/RGB/BGR */
    if (SourcePalType == PAL_INDEXED)
    {
-      XlateGDI->translationTable =
-         EngAllocMem(0, sizeof(ULONG) * SourcePalGDI->NumColors, 0);
-      for (i = 0; i < SourcePalGDI->NumColors; i++)
-         XlateGDI->translationTable[i] =
+      XlateObj->cEntries = SourcePalGDI->NumColors;
+      XlateObj->pulXlate =
+         EngAllocMem(0, sizeof(ULONG) * XlateObj->cEntries, 0);
+      for (i = 0; i < XlateObj->cEntries; i++)
+         XlateObj->pulXlate[i] =
             ShiftAndMask(XlateGDI, *((ULONG *)&SourcePalGDI->IndexedColors[i]));
       XlateObj->flXlate |= XO_TABLE;
-      XlateObj->pulXlate = XlateGDI->translationTable;
       goto end;
    }
 
@@ -313,6 +314,7 @@
    XlateGDI->SourcePal = PaletteSource;
 
    XlateObj->flXlate = XO_TO_MONO;
+   XlateObj->cEntries = 1;
    XlateObj->pulXlate = &XlateGDI->BackgroundColor;
    switch (SourcePalType)
    {
@@ -368,16 +370,15 @@
    }
    XlateObj = GDIToObj(XlateGDI, XLATE);
 
-   XlateGDI->translationTable = EngAllocMem(0, sizeof(ULONG) * 2, 0);
-   if (XlateGDI->translationTable == NULL)
+   XlateObj->cEntries = 2;
+   XlateObj->pulXlate = EngAllocMem(0, sizeof(ULONG) * XlateObj->cEntries, 0);
+   if (XlateObj->pulXlate == NULL)
    {
       PALETTE_UnlockPalette(DestPalGDI);
       EngFreeMem(XlateGDI);
       return NULL;
    }
 
-   XlateObj->pulXlate = XlateGDI->translationTable;
-
    XlateObj->iSrcType = PAL_INDEXED;
    XlateObj->iDstType = DestPalGDI->Mode;
 
@@ -394,19 +395,19 @@
    XlateGDI->GreenShift = CalculateShift(RGB(0x00, 0xFF, 0x00)) -
CalculateShift(XlateGDI->GreenMask);
    XlateGDI->BlueShift =  CalculateShift(RGB(0x00, 0x00, 0xFF)) -
CalculateShift(XlateGDI->BlueMask);
 
-   XlateGDI->translationTable[0] = ShiftAndMask(XlateGDI, BackgroundColor);
-   XlateGDI->translationTable[1] = ShiftAndMask(XlateGDI, ForegroundColor);
+   XlateObj->pulXlate[0] = ShiftAndMask(XlateGDI, BackgroundColor);
+   XlateObj->pulXlate[1] = ShiftAndMask(XlateGDI, ForegroundColor);
 
    if (XlateObj->iDstType == PAL_INDEXED)
    {
-      XlateGDI->translationTable[0] =
+      XlateObj->pulXlate[0] =
          ClosestColorMatch(XlateGDI,
-                           (LPPALETTEENTRY)&XlateGDI->translationTable[0],
+                           (LPPALETTEENTRY)&XlateObj->pulXlate[0],
                            DestPalGDI->IndexedColors,
                            DestPalGDI->NumColors);
-      XlateGDI->translationTable[1] =
+      XlateObj->pulXlate[1] =
          ClosestColorMatch(XlateGDI,
-                           (LPPALETTEENTRY)&XlateGDI->translationTable[1],
+                           (LPPALETTEENTRY)&XlateObj->pulXlate[1],
                            DestPalGDI->IndexedColors,
                            DestPalGDI->NumColors);
    }
@@ -453,9 +454,9 @@
    XlateGDI = ObjToGDI(XlateObj, XLATE);
 
    if ((XlateObj->flXlate & XO_TABLE) &&
-       XlateGDI->translationTable != NULL)
-   {
-      EngFreeMem(XlateGDI->translationTable);
+       XlateObj->pulXlate != NULL)
+   {
+      EngFreeMem(XlateObj->pulXlate);
    }
 
    EngFreeMem(XlateGDI);
@@ -467,11 +468,9 @@
 PULONG STDCALL
 XLATEOBJ_piVector(XLATEOBJ *XlateObj)
 {
-   XLATEGDI *XlateGDI = ObjToGDI(XlateObj, XLATE);
-
    if (XlateObj->iSrcType == PAL_INDEXED)
    {
-      return XlateGDI->translationTable;
+      return XlateObj->pulXlate;
    }
 
    return NULL;
@@ -494,8 +493,13 @@
    if (XlateObj->flXlate & XO_TRIVIAL)
       return Color;
     
-   if ((XlateObj->flXlate & XO_TABLE))   
-      return XlateObj->pulXlate[Color & 0xff];
+   if (XlateObj->flXlate & XO_TABLE)
+   {
+      if (Color >= XlateObj->cEntries)
+          Color %= XlateObj->cEntries;
+
+      return XlateObj->pulXlate[Color];
+   }
 
 
    if (XlateObj->flXlate & XO_TO_MONO)