xorg: added rdpRegionPixelCount

xorg/server/module/rdpReg.c

@@ -244,3 +244,22 @@ rdpRegionUnionRect(RegionPtr pReg, BoxPtr prect)
     rdpRegionUnion(pReg, pReg, &reg);
     rdpRegionUninit(&reg);
 }
+
+/*****************************************************************************/
+int
+rdpRegionPixelCount(RegionPtr pReg)
+{
+    int index;
+    int count;
+    int rv;
+    BoxRec box;
+
+    rv = 0;
+    count = REGION_NUM_RECTS(pReg);
+    for (index = 0; index < count; index++)
+    {
+        box = REGION_RECTS(pReg)[index];
+        rv += (box.x2 - box.x1) * (box.y2 - box.y1);
+    }
+    return rv;
+}

xorg/server/module/rdpReg.h

@@ -58,5 +58,7 @@ Bool
 rdpRegionBreak(RegionPtr pReg);
 void
 rdpRegionUnionRect(RegionPtr pReg, BoxPtr prect);
+int
+rdpRegionPixelCount(RegionPtr pReg);
 
 #endif