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| author | Trond Kjernåsen <trond@trolltech.com> | 2009-06-02 15:55:58 (GMT) |
|---|---|---|
| committer | Trond Kjernåsen <trond@trolltech.com> | 2009-06-02 15:58:00 (GMT) |
| commit | b3ebeff77de9f3e53bea08bfd09eac9cb3a32be3 (patch) | |
| tree | 6d894918b6df435037b531b8341ff06dc87915f1 | |
| parent | e8c6c0cf4d341572e4740940590b0301d208d239 (diff) | |
| download | Qt-b3ebeff77de9f3e53bea08bfd09eac9cb3a32be3.zip Qt-b3ebeff77de9f3e53bea08bfd09eac9cb3a32be3.tar.gz Qt-b3ebeff77de9f3e53bea08bfd09eac9cb3a32be3.tar.bz2 | |
Fixed a byte ordering issue when using the raster graphicssystem.
The R and B channels were swapped on little endian machines with
BGR layout.
Task-number: 254934
Reviewed-by: Samuel
| -rw-r--r-- | src/gui/painting/qpaintengine_x11.cpp | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/src/gui/painting/qpaintengine_x11.cpp b/src/gui/painting/qpaintengine_x11.cpp index 9cc9683..2e6d593 100644 --- a/src/gui/painting/qpaintengine_x11.cpp +++ b/src/gui/painting/qpaintengine_x11.cpp @@ -1826,9 +1826,10 @@ Q_GUI_EXPORT void qt_x11_drawImage(const QRect &rect, const QPoint &pos, const Q const int h = rect.height(); QImage im; - if ((QSysInfo::ByteOrder == QSysInfo::BigEndian - && ((ImageByteOrder(X11->display) == LSBFirst) || bgr_layout)) - || (ImageByteOrder(X11->display) == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) + int image_byte_order = ImageByteOrder(X11->display); + if ((QSysInfo::ByteOrder == QSysInfo::BigEndian && ((image_byte_order == LSBFirst) || bgr_layout)) + || (image_byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian) + || (image_byte_order == LSBFirst && bgr_layout)) { im = image.copy(rect); const int iw = im.bytesPerLine() / 4; @@ -1836,19 +1837,21 @@ Q_GUI_EXPORT void qt_x11_drawImage(const QRect &rect, const QPoint &pos, const Q for (int i=0; i < h; i++) { uint *p = data; uint *end = p + w; - if (bgr_layout && ImageByteOrder(X11->display) == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian) { + if (bgr_layout && image_byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian) { while (p < end) { *p = ((*p << 8) & 0xffffff00) | ((*p >> 24) & 0x000000ff); p++; } - } else if ((ImageByteOrder(X11->display) == LSBFirst && QSysInfo::ByteOrder == QSysInfo::BigEndian) - || (ImageByteOrder(X11->display) == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) { + } else if ((image_byte_order == LSBFirst && QSysInfo::ByteOrder == QSysInfo::BigEndian) + || (image_byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) { while (p < end) { *p = ((*p << 24) & 0xff000000) | ((*p << 8) & 0x00ff0000) | ((*p >> 8) & 0x0000ff00) | ((*p >> 24) & 0x000000ff); p++; } - } else if (ImageByteOrder(X11->display) == MSBFirst && QSysInfo::ByteOrder == QSysInfo::BigEndian) { + } else if ((image_byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::BigEndian) + || (image_byte_order == LSBFirst && bgr_layout)) + { while (p < end) { *p = ((*p << 16) & 0x00ff0000) | ((*p >> 16) & 0x000000ff) | ((*p ) & 0xff00ff00); |