diff options
Diffstat (limited to 'src/gui/painting/qpainter.cpp')
| -rw-r--r-- | src/gui/painting/qpainter.cpp | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp index 8defcfb28d..6472481e7a 100644 --- a/src/gui/painting/qpainter.cpp +++ b/src/gui/painting/qpainter.cpp @@ -2186,11 +2186,10 @@ void QPainter::setBrushOrigin(const QPointF &p) destination pixel in such a way that the alpha component of the source defines the translucency of the pixel. - When the paint device is a QImage, the image format must be set to - \l {QImage::Format}{Format_ARGB32_Premultiplied} or - \l {QImage::Format}{Format_ARGB32} for the composition modes to have - any effect. For performance the premultiplied version is the preferred - format. + Several composition modes require an alpha channel in the source or + target images to have an effect. For optimal performance the + image format \l {QImage::Format}{Format_ARGB32_Premultiplied} is + preferred. When a composition mode is set it applies to all painting operator, pens, brushes, gradients and pixmap/image drawing. @@ -2469,7 +2468,7 @@ void QPainter::setClipping(bool enable) // we can't enable clipping if we don't have a clip if (enable - && (d->state->clipInfo.isEmpty() || d->state->clipInfo.last().operation == Qt::NoClip)) + && (d->state->clipInfo.isEmpty() || d->state->clipInfo.constLast().operation == Qt::NoClip)) return; d->state->clipEnabled = enable; |