diff options
Diffstat (limited to 'src/gui/image/qimage.cpp')
| -rw-r--r-- | src/gui/image/qimage.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp index 2770a04bce..463a1e4a6d 100644 --- a/src/gui/image/qimage.cpp +++ b/src/gui/image/qimage.cpp @@ -4921,7 +4921,14 @@ QImage Q_TRACE_INSTRUMENT(qtgui) QImage::transformed(const QTransform &matrix, Q if (target_format >= QImage::Format_RGB32) { // Prevent QPainter from applying devicePixelRatio corrections - const QImage sImage = (devicePixelRatio() != 1) ? QImage(constBits(), width(), height(), format()) : *this; + QImage sImage = (devicePixelRatio() != 1) ? QImage(constBits(), width(), height(), format()) : *this; + if (sImage.d != d + && (d->format == QImage::Format_MonoLSB + || d->format == QImage::Format_Mono + || d->format == QImage::Format_Indexed8)) { + sImage.d->colortable = d->colortable; + sImage.d->has_alpha_clut = d->has_alpha_clut; + } Q_ASSERT(sImage.devicePixelRatio() == 1); Q_ASSERT(sImage.devicePixelRatio() == dImage.devicePixelRatio()); |