[gschneider] 42324: FloodFill: - Remove unneeded casts when setting the initial flood start, add debug print for flood region location (silenced) - Improve memory guards, free memory on error

Author: gschneider
Date: Sat Aug  1 19:58:28 2009
New Revision: 42324

URL: http://svn.reactos.org/svn/reactos?rev=42324&view=rev
Log:
FloodFill:
- Remove unneeded casts when setting the initial flood start, add debug print for flood region location (silenced)
- Improve memory guards, free memory on error

Modified:
    trunk/reactos/subsystems/win32/win32k/dib/floodfill.c

Modified: trunk/reactos/subsystems/win32/win32k/dib/floodfill.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/dib...
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/dib/floodfill.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/dib/floodfill.c [iso-8859-1] Sat Aug  1 19:58:28 2009
@@ -43,7 +43,8 @@
     {
         return FALSE;
     }
-    info->floodStart = (FLOODITEM*)((PBYTE)info->floodData + (width * height * sizeof(FLOODITEM)));
+    info->floodStart = info->floodData + (width * height);
+    DPRINT("Allocated flood stack from %p to %p\n", info->floodData, info->floodStart);
     return TRUE;
 }
 static __inline VOID finalizeFlood(FLOODINFO *info)
@@ -118,15 +119,16 @@
             removeItemFlood(&flood);

DibFunctionsForBitmapFormat[DstSurf->iBitmapFormat].DIB_PutPixel(DstSurf, x, y, BrushColor);
+            if (flood.floodStart - 4 < flood.floodData)
+            {   
+                DPRINT1("Can't finish flooding!\n");
+                finalizeFlood(&flood);
+                return FALSE;
+            }
             addItemFlood(&flood, x, y + 1, DstSurf, DstRect, ConvColor, FALSE);
             addItemFlood(&flood, x, y - 1, DstSurf, DstRect, ConvColor, FALSE);
             addItemFlood(&flood, x + 1, y, DstSurf, DstRect, ConvColor, FALSE);
             addItemFlood(&flood, x - 1, y, DstSurf, DstRect, ConvColor, FALSE);
-            if (flood.floodStart <= flood.floodData)
-            {   
-                DPRINT1("Couldn't finish flooding!\n");
-                return FALSE;
-            }
         }
         finalizeFlood(&flood);
     }
@@ -150,15 +152,16 @@
             removeItemFlood(&flood);

DibFunctionsForBitmapFormat[DstSurf->iBitmapFormat].DIB_PutPixel(DstSurf, x, y, BrushColor);
+            if (flood.floodStart - 4 < flood.floodData)
+            {
+                DPRINT1("Can't finish flooding!\n");
+                finalizeFlood(&flood);
+                return FALSE;
+            }
             addItemFlood(&flood, x, y + 1, DstSurf, DstRect, ConvColor, TRUE);
             addItemFlood(&flood, x, y - 1, DstSurf, DstRect, ConvColor, TRUE);
             addItemFlood(&flood, x + 1, y, DstSurf, DstRect, ConvColor, TRUE);
             addItemFlood(&flood, x - 1, y, DstSurf, DstRect, ConvColor, TRUE);
-            if (flood.floodStart <= flood.floodData)
-            {   
-                DPRINT1("Couldn't finish flooding!\n");
-                return FALSE;
-            }
         }
         finalizeFlood(&flood);
     }