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Diffstat (limited to 'src/plugins/gfxdrivers/directfb/qdirectfbpixmap.cpp')
-rw-r--r--src/plugins/gfxdrivers/directfb/qdirectfbpixmap.cpp31
1 files changed, 28 insertions, 3 deletions
diff --git a/src/plugins/gfxdrivers/directfb/qdirectfbpixmap.cpp b/src/plugins/gfxdrivers/directfb/qdirectfbpixmap.cpp
index 1cbfdaf..f27440e 100644
--- a/src/plugins/gfxdrivers/directfb/qdirectfbpixmap.cpp
+++ b/src/plugins/gfxdrivers/directfb/qdirectfbpixmap.cpp
@@ -552,6 +552,34 @@ QImage *QDirectFBPixmapData::buffer()
return &lockedImage;
}
+
+bool QDirectFBPixmapData::scroll(int dx, int dy, const QRect &rect)
+{
+ if (!dfbSurface) {
+ return false;
+ }
+ unlockSurface();
+ DFBResult result = dfbSurface->SetBlittingFlags(dfbSurface, DSBLIT_NOFX);
+ if (result != DFB_OK) {
+ DirectFBError("QDirectFBPixmapData::scroll", result);
+ return false;
+ }
+ result = dfbSurface->SetPorterDuff(dfbSurface, DSPD_NONE);
+ if (result != DFB_OK) {
+ DirectFBError("QDirectFBPixmapData::scroll", result);
+ return false;
+ }
+
+ const DFBRectangle source = { rect.x(), rect.y(), rect.width(), rect.height() };
+ result = dfbSurface->Blit(dfbSurface, dfbSurface, &source, source.x + dx, source.y + dy);
+ if (result != DFB_OK) {
+ DirectFBError("QDirectFBPixmapData::scroll", result);
+ return false;
+ }
+
+ return true;
+}
+
void QDirectFBPixmapData::invalidate()
{
if (dfbSurface) {
@@ -568,6 +596,3 @@ void QDirectFBPixmapData::invalidate()
QT_END_NAMESPACE
#endif // QT_NO_QWS_DIRECTFB
-
-
-