QtWidgets: use new QRegion::begin()/end() instead of rect()

Saves ~600b in text size on optimized GCC 5.3 Linux AMD64 builds.

Change-Id: Ib542a128982fc53638780945014d903f2cbee9c3
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/src/widgets/kernel/qwidgetbackingstore.cpp b/src/widgets/kernel/qwidgetbackingstore.cpp
index 03f62582ff..e925475b79 100644
--- a/src/widgets/kernel/qwidgetbackingstore.cpp
+++ b/src/widgets/kernel/qwidgetbackingstore.cpp
@@ -158,7 +158,7 @@ static void showYellowThing_win(QWidget *widget, const QRegion &region, int msec
     }
     i = (i + 1) & 3;
 
-    foreach (const QRect &rect, region.rects()) {
+    for (const QRect &rect : region) {
         RECT winRect;
         SetRect(&winRect, rect.left(), rect.top(), rect.right(), rect.bottom());
         FillRect(hdc, &winRect, brush);
@@ -1311,9 +1311,8 @@ void QWidgetBackingStore::doSync()
         updateStaticContentsSize();
         dirty = QRegion();
         updateRequestSent = false;
-        const QVector<QRect> rects(toClean.rects());
-        for (int i = 0; i < rects.size(); ++i)
-            tlw->d_func()->extra->proxyWidget->update(rects.at(i));
+        for (const QRect &rect : toClean)
+            tlw->d_func()->extra->proxyWidget->update(rect);
         return;
     }
 #endif