bool QQnxRasterBackingStore::scroll(const QRegion &area, int dx, int dy)
{
qRasterBackingStoreDebug() << Q_FUNC_INFO << "w =" << window();
// calculate entire region affected by scroll operation (src + dst)
QRegion totalArea = area.translated(dx, dy);
totalArea += area;
m_hasUnflushedPaintOperations = true;
// visit all pending scroll operations
for (int i = m_scrollOpList.size() - 1; i >= 0; i--) {
ScrollOp &op = m_scrollOpList[i];
if (op.totalArea == totalArea) {
// same area is being scrolled again - update delta
op.dx += dx;
op.dy += dy;
return true;
} else if (op.totalArea.intersects(totalArea)) {
// current scroll overlaps previous scroll but is
// not equal in area - just paint everything
qWarning("QQNX: pending scroll operations overlap but not equal");
return false;
}
}
// create new scroll operation
m_scrollOpList.append( ScrollOp(totalArea, dx, dy) );
return true;
}
bool QBBRasterWindowSurface::scroll(const QRegion &area, int dx, int dy)
{
#if defined(QBBRASTERWINDOWSURFACE_DEBUG)
qDebug() << "QBBRasterWindowSurface::scroll - w=" << window();
#endif
// calculate entire region affected by scroll operation (src + dst)
QRegion totalArea = area.translated(dx, dy);
totalArea += area;
// visit all pending scroll operations
for (int i = mScrollOpList.size() - 1; i >= 0; i--) {
ScrollOp& op = mScrollOpList[i];
if (op.totalArea == totalArea) {
// same area is being scrolled again - update delta
op.dx += dx;
op.dy += dy;
return true;
} else if (op.totalArea.intersects(totalArea)) {
// current scroll overlaps previous scroll but is
// not equal in area - just paint everything
qWarning("QBB: pending scroll operations overlap but not equal");
return false;
}
}
// create new scroll operation
mScrollOpList.append( ScrollOp(totalArea, dx, dy) );
return true;
}
