--- a/src/gui/painting/qblendfunctions.cpp Tue Jan 26 12:42:25 2010 +0200
+++ b/src/gui/painting/qblendfunctions.cpp Tue Feb 02 00:43:10 2010 +0200
@@ -223,11 +223,24 @@
int h = ty2 - ty1;
int w = tx2 - tx1;
- const int dstx = qCeil((tx1 + 0.5 - qMin(targetRect.left(), targetRect.right())) * ix) - 1;
- const int dsty = qCeil((ty1 + 0.5 - qMin(targetRect.top(), targetRect.bottom())) * iy) - 1;
+
+ quint32 basex;
+ quint32 srcy;
- quint32 basex = quint32((sx < 0 ? srcRect.right() : srcRect.left()) * 65536) + dstx;
- quint32 srcy = quint32((sy < 0 ? srcRect.bottom() : srcRect.top()) * 65536) + dsty;
+ if (sx < 0) {
+ int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1;
+ basex = quint32(srcRect.right() * 65536) + dstx;
+ } else {
+ int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1;
+ basex = quint32(srcRect.left() * 65536) + dstx;
+ }
+ if (sy < 0) {
+ int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1;
+ srcy = quint32(srcRect.bottom() * 65536) + dsty;
+ } else {
+ int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1;
+ srcy = quint32(srcRect.top() * 65536) + dsty;
+ }
quint16 *dst = ((quint16 *) (destPixels + ty1 * dbpl)) + tx1;
@@ -592,7 +605,7 @@
}
-static void qt_blend_rgb32_on_rgb32(uchar *destPixels, int dbpl,
+void qt_blend_rgb32_on_rgb32(uchar *destPixels, int dbpl,
const uchar *srcPixels, int sbpl,
int w, int h,
int const_alpha)
@@ -723,11 +736,23 @@
int h = ty2 - ty1;
int w = tx2 - tx1;
- const int dstx = qCeil((tx1 + 0.5 - qMin(targetRect.left(), targetRect.right())) * ix) - 1;
- const int dsty = qCeil((ty1 + 0.5 - qMin(targetRect.top(), targetRect.bottom())) * iy) - 1;
+ quint32 basex;
+ quint32 srcy;
- quint32 basex = quint32((sx < 0 ? srcRect.right() : srcRect.left()) * 65536) + dstx;
- quint32 srcy = quint32((sy < 0 ? srcRect.bottom() : srcRect.top()) * 65536) + dsty;
+ if (sx < 0) {
+ int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1;
+ basex = quint32(srcRect.right() * 65536) + dstx;
+ } else {
+ int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1;
+ basex = quint32(srcRect.left() * 65536) + dstx;
+ }
+ if (sy < 0) {
+ int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1;
+ srcy = quint32(srcRect.bottom() * 65536) + dsty;
+ } else {
+ int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1;
+ srcy = quint32(srcRect.top() * 65536) + dsty;
+ }
quint32 *dst = ((quint32 *) (destPixels + ty1 * dbpl)) + tx1;