Merge remote branch 'qt/4.7' into lighthouse-4.7

Conflicts:
	src/opengl/qgl_p.h

1 files changed, 74 insertions, 1 deletions

diff --git a/tests/auto/qwidget/tst_qwidget.cpp b/tests/auto/qwidget/tst_qwidget.cpp
index 57b01f1cc0..b618479c45 100644
--- a/tests/auto/qwidget/tst_qwidget.cpp
+++ b/tests/auto/qwidget/tst_qwidget.cpp
@@ -9745,7 +9745,6 @@ void tst_QWidget::destroyBackingStoreWhenHidden()
     QVERIFY(0 != backingStore(child));
 
     // Parent is obscured, therefore its backing store should be destroyed
-    QEXPECT_FAIL("", "QTBUG-12406", Continue);
     QVERIFY(0 == backingStore(parent));
 
     // Disable full screen
@@ -9761,6 +9760,80 @@ void tst_QWidget::destroyBackingStoreWhenHidden()
     QVERIFY(0 != backingStore(parent));
     QVERIFY(0 == backingStore(child));
     }
+
+    // 6. Partial reveal followed by full reveal
+    {
+    QWidget upper;
+    upper.setAutoFillBackground(true);
+    upper.setPalette(Qt::red);
+    upper.setGeometry(50, 50, 100, 100);
+
+    QWidget lower;
+    lower.setAutoFillBackground(true);
+    lower.setPalette(Qt::green);
+    lower.setGeometry(50, 50, 100, 100);
+
+    lower.show();
+    QTest::qWaitForWindowShown(&lower);
+    upper.show();
+    QTest::qWaitForWindowShown(&upper);
+    upper.raise();
+
+    QVERIFY(0 != backingStore(upper));
+    QVERIFY(0 == backingStore(lower));
+
+    // Check that upper obscures lower
+    QVERIFY(lower.visibleRegion().subtracted(upper.visibleRegion()).isEmpty());
+
+    // Partially reveal lower
+    upper.move(100, 100);
+
+    // Completely reveal lower
+    upper.hide();
+
+    // Hide lower widget - this should cause its backing store to be deleted
+    lower.hide();
+
+    // Check that backing store was deleted
+    WAIT_AND_VERIFY(0 == backingStore(lower));
+    }
+
+    // 7. Reparenting of visible native child widget
+    {
+    QWidget parent1;
+    parent1.setAutoFillBackground(true);
+    parent1.setPalette(Qt::green);
+    parent1.setGeometry(50, 50, 100, 100);
+
+    QWidget *child = new QWidget(&parent1);
+    child->winId();
+    child->setAutoFillBackground(true);
+    child->setPalette(Qt::red);
+    child->setGeometry(10, 10, 30, 30);
+
+    QWidget parent2;
+    parent2.setAutoFillBackground(true);
+    parent2.setPalette(Qt::blue);
+    parent2.setGeometry(150, 150, 100, 100);
+
+    parent1.show();
+    QTest::qWaitForWindowShown(&parent1);
+    QVERIFY(0 != backingStore(parent1));
+
+    parent2.show();
+    QTest::qWaitForWindowShown(&parent2);
+    QVERIFY(0 != backingStore(parent2));
+
+    child->setParent(&parent2);
+    child->setGeometry(10, 10, 30, 30);
+    child->show();
+
+    parent1.hide();
+    WAIT_AND_VERIFY(0 == backingStore(parent1));
+
+    parent2.hide();
+    WAIT_AND_VERIFY(0 == backingStore(parent2));
+    }
 }
 
 #undef WAIT_AND_VERIFY