QtOpenGL/plugins/platformsupport: use new QRegion::begin()/end() instead of rect()

Saves e.g. ~900b and ~2900b in text size in QtOpenGL and
XcbQpa libs, resp., on optimized GCC 5.3 Linux AMD64 builds.

Change-Id: Id904689164ca32df41118a23747c70048d8e6604
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>

1 files changed, 3 insertions, 9 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoahelpers.mm b/src/plugins/platforms/cocoa/qcocoahelpers.mm
index 25fc9f0d5e..b6b1862d80 100644
--- a/src/plugins/platforms/cocoa/qcocoahelpers.mm
+++ b/src/plugins/platforms/cocoa/qcocoahelpers.mm
@@ -200,15 +200,9 @@ NSImage *qt_mac_create_nsimage(const QIcon &icon)
 HIMutableShapeRef qt_mac_QRegionToHIMutableShape(const QRegion &region)
 {
     HIMutableShapeRef shape = HIShapeCreateMutable();
-    QVector<QRect> rects = region.rects();
-    if (!rects.isEmpty()) {
-        int n = rects.count();
-        const QRect *qt_r = rects.constData();
-        while (n--) {
-            CGRect cgRect = CGRectMake(qt_r->x(), qt_r->y(), qt_r->width(), qt_r->height());
-            HIShapeUnionWithRect(shape, &cgRect);
-            ++qt_r;
-        }
+    for (const QRect &rect : region) {
+        CGRect cgRect = CGRectMake(rect.x(), rect.y(), rect.width(), rect.height());
+        HIShapeUnionWithRect(shape, &cgRect);
     }
     return shape;
 }