Do not modify window size for fullscreen windows in setGeometry_sys

Minimum sizes of widgets can cause windows to expand beyond screen
limits in QWidgetPrivate::setGeometry_sys. Normally this is not
noticeable as the window size is forced in various places to the
clientRect, but there are certain sequences where the size set in
setGeometry_sys is the final one, resulting in too large windows.

Removed the modification of window size in setGeometry_sys
for fullscreen windows for which the correct size is already requested.

Task-number: QTBUG-18749
Reviewed-by: Sami Merila
(cherry picked from commit d4a2ce8ad5be6633f0e5c5a74eaa8b9c32c02ba8)

Reapplied after bad v4.7.4 merge

1 files changed, 10 insertions, 1 deletions

diff --git a/src/gui/kernel/qwidget_s60.cpp b/src/gui/kernel/qwidget_s60.cpp
index 5630706..ada85ce 100644
--- a/src/gui/kernel/qwidget_s60.cpp
+++ b/src/gui/kernel/qwidget_s60.cpp
@@ -239,7 +239,16 @@ void QWidgetPrivate::setGeometry_sys(int x, int y, int w, int h, bool isMove)
     if (w != oldSize.width() || h != oldSize.height())
         data.window_state &= ~Qt::WindowMaximized;
 
-    if (extra) {                                // any size restrictions?
+    bool checkExtra = true;
+    if (q->isWindow() && (data.window_state & Qt::WindowFullScreen)) {
+        // Do not modity window size for fullscreen windows, if requested
+        // size is already equal to clientRect.
+        TRect r = static_cast<CEikAppUi*>(S60->appUi())->ClientRect();
+        if (w == r.Width() && h == r.Height())
+            checkExtra = false;
+    }
+
+    if (checkExtra && extra) {  // any size restrictions?
         w = qMin(w,extra->maxw);
         h = qMin(h,extra->maxh);
         w = qMax(w,extra->minw);