Merge commit 'origin/4.5'

Conflicts:
	src/sql/drivers/psql/qsql_psql.cpp

3 files changed, 18 insertions, 12 deletions

diff --git a/src/gui/painting/qbackingstore.cpp b/src/gui/painting/qbackingstore.cpp
index d3b4157..34bc578 100644
--- a/src/gui/painting/qbackingstore.cpp
+++ b/src/gui/painting/qbackingstore.cpp
@@ -258,7 +258,10 @@ void QWidgetBackingStore::unflushPaint(QWidget *widget, const QRegion &rgn)
 bool QWidgetBackingStore::bltRect(const QRect &rect, int dx, int dy, QWidget *widget)
 {
     const QPoint pos(tlwOffset + widget->mapTo(tlw, rect.topLeft()));
-    return windowSurface->scroll(QRect(pos, rect.size()), dx, dy);
+    const QRect tlwRect(QRect(pos, rect.size()));
+    if (dirty.intersects(tlwRect))
+        return false; // We don't want to scroll junk.
+    return windowSurface->scroll(tlwRect, dx, dy);
 }
 
 void QWidgetBackingStore::releaseBuffer()
diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp
index 37f7b6d..37a88a3 100644
--- a/src/gui/painting/qpaintengine_raster.cpp
+++ b/src/gui/painting/qpaintengine_raster.cpp
@@ -1322,6 +1322,7 @@ void QRasterPaintEngine::clip(const QRect &rect, Qt::ClipOperation op)
             delete s->clip;
 
         s->clip = clip;
+        s->clip->enabled = true;
         s->flags.has_clip_ownership = true;
 
     } else { // intersect clip with current clip
@@ -1338,6 +1339,7 @@ void QRasterPaintEngine::clip(const QRect &rect, Qt::ClipOperation op)
                 s->clip->setClipRect(base->clipRect & clipRect);
             else
                 s->clip->setClipRegion(base->clipRegion & clipRect);
+            s->clip->enabled = true;
         } else {
             QPaintEngineEx::clip(rect, op);
             return;
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index 6953e04..34305c2 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -2545,6 +2545,9 @@ void QPainter::setClipRect(const QRectF &rect, Qt::ClipOperation op)
     Q_D(QPainter);
 
     if (d->extended) {
+        if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
+            op = Qt::ReplaceClip;
+
         if (!d->engine) {
             qWarning("QPainter::setClipRect: Painter not active");
             return;
@@ -2598,6 +2601,9 @@ void QPainter::setClipRect(const QRect &rect, Qt::ClipOperation op)
         return;
     }
 
+    if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
+        op = Qt::ReplaceClip;
+
     if (d->extended) {
         d->state->clipEnabled = true;
         d->extended->clip(rect, op);
@@ -2606,9 +2612,6 @@ void QPainter::setClipRect(const QRect &rect, Qt::ClipOperation op)
         return;
     }
 
-    if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
-        op = Qt::ReplaceClip;
-
     d->state->clipRegion = rect;
     d->state->clipOperation = op;
     if (op == Qt::NoClip || op == Qt::ReplaceClip)
@@ -2651,6 +2654,9 @@ void QPainter::setClipRegion(const QRegion &r, Qt::ClipOperation op)
         return;
     }
 
+    if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
+        op = Qt::ReplaceClip;
+
     if (d->extended) {
         d->state->clipEnabled = true;
         d->extended->clip(r, op);
@@ -2659,9 +2665,6 @@ void QPainter::setClipRegion(const QRegion &r, Qt::ClipOperation op)
         return;
     }
 
-    if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
-        op = Qt::ReplaceClip;
-
     d->state->clipRegion = r;
     d->state->clipOperation = op;
     if (op == Qt::NoClip || op == Qt::ReplaceClip)
@@ -3048,6 +3051,9 @@ void QPainter::setClipPath(const QPainterPath &path, Qt::ClipOperation op)
         return;
     }
 
+    if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
+        op = Qt::ReplaceClip;
+
     if (d->extended) {
         d->state->clipEnabled = true;
         d->extended->clip(path, op);
@@ -3056,11 +3062,6 @@ void QPainter::setClipPath(const QPainterPath &path, Qt::ClipOperation op)
         return;
     }
 
-
-
-    if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
-        op = Qt::ReplaceClip;
-
     d->state->clipPath = path;
     d->state->clipOperation = op;
     if (op == Qt::NoClip || op == Qt::ReplaceClip)