diff options
Diffstat (limited to 'src/gui/painting/qblendfunctions.cpp')
| -rw-r--r-- | src/gui/painting/qblendfunctions.cpp | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/src/gui/painting/qblendfunctions.cpp b/src/gui/painting/qblendfunctions.cpp index 8737f10..ba1b642 100644 --- a/src/gui/painting/qblendfunctions.cpp +++ b/src/gui/painting/qblendfunctions.cpp @@ -223,21 +223,25 @@ void qt_scale_image_16bit(uchar *destPixels, int dbpl, int h = ty2 - ty1; int w = tx2 - tx1; + quint32 basex; quint32 srcy; + 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; + if (sx < 0) { - int dstx = qFloor((tx1 + 0.5 - targetRect.right()) * ix) + 1; + int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1; basex = quint32(srcRect.right() * 65536) + dstx; } else { - int dstx = qCeil((tx1 + 0.5 - targetRect.left()) * ix) - 1; + int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1; basex = quint32(srcRect.left() * 65536) + dstx; } if (sy < 0) { - int dsty = qFloor((ty1 + 0.5 - targetRect.bottom()) * iy) + 1; + int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1; srcy = quint32(srcRect.bottom() * 65536) + dsty; } else { - int dsty = qCeil((ty1 + 0.5 - targetRect.top()) * iy) - 1; + int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1; srcy = quint32(srcRect.top() * 65536) + dsty; } @@ -738,18 +742,22 @@ template <typename T> void qt_scale_image_32bit(uchar *destPixels, int dbpl, quint32 basex; quint32 srcy; + 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; + + if (sx < 0) { - int dstx = qFloor((tx1 + 0.5 - targetRect.right()) * ix) + 1; + int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1; basex = quint32(srcRect.right() * 65536) + dstx; } else { - int dstx = qCeil((tx1 + 0.5 - targetRect.left()) * ix) - 1; + int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1; basex = quint32(srcRect.left() * 65536) + dstx; } if (sy < 0) { - int dsty = qFloor((ty1 + 0.5 - targetRect.bottom()) * iy) + 1; + int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1; srcy = quint32(srcRect.bottom() * 65536) + dsty; } else { - int dsty = qCeil((ty1 + 0.5 - targetRect.top()) * iy) - 1; + int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1; srcy = quint32(srcRect.top() * 65536) + dsty; } |