summaryrefslogtreecommitdiffstats
path: root/tests/auto/qwidget/tst_qwidget.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'tests/auto/qwidget/tst_qwidget.cpp')
-rw-r--r--tests/auto/qwidget/tst_qwidget.cpp247
1 files changed, 247 insertions, 0 deletions
diff --git a/tests/auto/qwidget/tst_qwidget.cpp b/tests/auto/qwidget/tst_qwidget.cpp
index 76e20b9..f4add5a 100644
--- a/tests/auto/qwidget/tst_qwidget.cpp
+++ b/tests/auto/qwidget/tst_qwidget.cpp
@@ -385,6 +385,7 @@ private slots:
void setGraphicsEffect();
void destroyBackingStore();
+ void destroyBackingStoreWhenHidden();
void activateWindow();
@@ -9517,6 +9518,252 @@ void tst_QWidget::destroyBackingStore()
#endif
}
+// Helper function
+QWidgetBackingStore* backingStore(QWidget &widget)
+{
+ QWidgetBackingStore *backingStore = 0;
+#ifdef QT_BUILD_INTERNAL
+ if (QTLWExtra *topExtra = qt_widget_private(&widget)->maybeTopData())
+ backingStore = topExtra->backingStore;
+#endif
+ return backingStore;
+}
+
+// Wait for a condition to be true, timing out after 1 second
+// This is used following calls to QWidget::show() and QWidget::hide(), which are
+// expected to asynchronously trigger native window visibility events.
+#define WAIT_AND_VERIFY(condition) \
+ do { \
+ QTime start = QTime::currentTime(); \
+ while (!(condition) && (start.elapsed() < 1000)) { \
+ qApp->processEvents(); \
+ QTest::qWait(50); \
+ } \
+ if (!QTest::qVerify((condition), #condition, "", __FILE__, __LINE__)) \
+ return; \
+ } while (0)
+
+void tst_QWidget::destroyBackingStoreWhenHidden()
+{
+#ifndef QT_BUILD_INTERNAL
+ QSKIP("Test step requires access to Q_AUTOTEST_EXPORT", SkipAll);
+#endif
+
+#ifndef Q_OS_SYMBIAN
+ QSKIP("Only Symbian destroys backing store when native window becomes invisible", SkipAll);
+#endif
+
+ testWidget->hide();
+ QTest::qWait(1000);
+
+ // 1. Single top-level QWidget
+ {
+ QWidget w;
+ w.setAutoFillBackground(true);
+ w.setPalette(Qt::yellow);
+ w.setGeometry(0, 0, 100, 100);
+ w.show();
+ QTest::qWaitForWindowShown(&w);
+ QVERIFY(0 != backingStore(w));
+
+ w.hide();
+ WAIT_AND_VERIFY(0 == backingStore(w));
+
+ w.show();
+ QTest::qWaitForWindowShown(&w);
+ QVERIFY(0 != backingStore(w));
+ }
+
+ // 2. Two top-level widgets
+ {
+ QWidget w1;
+ w1.setGeometry(0, 0, 100, 100);
+ w1.setAutoFillBackground(true);
+ w1.setPalette(Qt::red);
+ w1.show();
+ QTest::qWaitForWindowShown(&w1);
+ QVERIFY(0 != backingStore(w1));
+
+ QWidget w2;
+ w2.setGeometry(w1.geometry());
+ w1.setAutoFillBackground(true);
+ w1.setPalette(Qt::blue);
+ w2.show();
+ QTest::qWaitForWindowShown(&w2);
+ QVERIFY(0 != backingStore(w2));
+
+ // Check that w1 deleted its backing store when obscured by w2
+ QVERIFY(0 == backingStore(w1));
+
+ w2.move(w2.pos() + QPoint(10, 10));
+
+ // Check that w1 recreates its backing store when partially revealed
+ WAIT_AND_VERIFY(0 != backingStore(w1));
+ }
+
+ // 3. Native child widget
+ {
+ QWidget parent;
+ parent.setGeometry(0, 0, 100, 100);
+ parent.setAutoFillBackground(true);
+ parent.setPalette(Qt::yellow);
+
+ QWidget child(&parent);
+ child.setAutoFillBackground(true);
+ child.setPalette(Qt::green);
+
+ QVBoxLayout layout(&parent);
+ layout.setContentsMargins(10, 10, 10, 10);
+ layout.addWidget(&child);
+ parent.setLayout(&layout);
+
+ child.winId();
+
+ parent.show();
+ QTest::qWaitForWindowShown(&parent);
+
+ // Check that child window does not obscure parent window
+ QVERIFY(!parent.visibleRegion().subtracted(child.visibleRegion()).isEmpty());
+
+ // Native child widget should share parent's backing store
+ QWidgetBackingStore *const parentBs = backingStore(parent);
+ QVERIFY(0 != parentBs);
+ QVERIFY(0 == backingStore(child));
+
+ // Set margins to zero so that child widget totally obscures parent
+ layout.setContentsMargins(0, 0, 0, 0);
+
+ WAIT_AND_VERIFY(parent.visibleRegion().subtracted(child.visibleRegion()).isEmpty());
+
+ // Backing store should remain unchanged despite child window obscuring
+ // parent window
+ QEXPECT_FAIL("", "QTBUG-8697", Continue);
+ QVERIFY(parentBs == backingStore(parent));
+ QVERIFY(0 == backingStore(child));
+ }
+
+ // 4. Alien child widget which is made full-screen
+ {
+ QWidget parent;
+ parent.setGeometry(0, 0, 100, 100);
+ parent.setAutoFillBackground(true);
+ parent.setPalette(Qt::red);
+
+ QWidget child(&parent);
+ child.setAutoFillBackground(true);
+ child.setPalette(Qt::blue);
+
+ QVBoxLayout layout(&parent);
+ layout.setContentsMargins(10, 10, 10, 10);
+ layout.addWidget(&child);
+ parent.setLayout(&layout);
+
+ parent.show();
+ QTest::qWaitForWindowShown(&parent);
+
+ // Check that child window does not obscure parent window
+ QVERIFY(!parent.visibleRegion().subtracted(child.visibleRegion()).isEmpty());
+
+ // Native child widget should share parent's backing store
+ QVERIFY(0 != backingStore(parent));
+ QVERIFY(0 == backingStore(child));
+
+ // Make child widget full screen
+ child.setWindowFlags((child.windowFlags() | Qt::Window) ^ Qt::SubWindow);
+ child.setWindowState(child.windowState() | Qt::WindowFullScreen);
+ child.show();
+ QTest::qWaitForWindowShown(&child);
+
+ // Check that child window obscures parent window
+ QVERIFY(parent.visibleRegion().subtracted(child.visibleRegion()).isEmpty());
+
+ // Now that extent of child widget goes beyond parent's extent,
+ // a new backing store should be created for the child widget.
+ QVERIFY(0 != backingStore(child));
+
+ // Parent is obscured, therefore its backing store should be destroyed
+ QVERIFY(0 == backingStore(parent));
+
+ // Disable full screen
+ child.setWindowFlags(child.windowFlags() ^ (Qt::Window | Qt::SubWindow));
+ child.setWindowState(child.windowState() ^ Qt::WindowFullScreen);
+ child.show();
+ QTest::qWaitForWindowShown(&child);
+
+ // Check that parent is now visible again
+ QVERIFY(!parent.visibleRegion().subtracted(child.visibleRegion()).isEmpty());
+
+ // Native child widget should once again share parent's backing store
+ QVERIFY(0 != backingStore(parent));
+ QEXPECT_FAIL("", "QTBUG-10643", Continue);
+ QVERIFY(0 == backingStore(child));
+ }
+
+ // 5. Native child widget which is made full-screen
+ {
+ QWidget parent;
+ parent.setGeometry(0, 0, 100, 100);
+ parent.setAutoFillBackground(true);
+ parent.setPalette(Qt::red);
+
+ QWidget child(&parent);
+ child.setAutoFillBackground(true);
+ child.setPalette(Qt::blue);
+
+ QVBoxLayout layout(&parent);
+ layout.setContentsMargins(10, 10, 10, 10);
+ layout.addWidget(&child);
+ parent.setLayout(&layout);
+
+ child.winId();
+
+ parent.show();
+ QTest::qWaitForWindowShown(&parent);
+
+ // Check that child window does not obscure parent window
+ QVERIFY(!parent.visibleRegion().subtracted(child.visibleRegion()).isEmpty());
+
+ // Native child widget should share parent's backing store
+ QVERIFY(0 != backingStore(parent));
+ QVERIFY(0 == backingStore(child));
+
+ // Make child widget full screen
+ child.setWindowFlags((child.windowFlags() | Qt::Window) ^ Qt::SubWindow);
+ child.setWindowState(child.windowState() | Qt::WindowFullScreen);
+ child.show();
+ QTest::qWaitForWindowShown(&child);
+
+ // Ensure that 'window hidden' event is received by parent
+ qApp->processEvents();
+
+ // Check that child window obscures parent window
+ QVERIFY(parent.visibleRegion().subtracted(child.visibleRegion()).isEmpty());
+
+ // Now that extent of child widget goes beyond parent's extent,
+ // a new backing store should be created for the child widget.
+ QVERIFY(0 != backingStore(child));
+
+ // Parent is obscured, therefore its backing store should be destroyed
+ QVERIFY(0 == backingStore(parent));
+
+ // Disable full screen
+ child.setWindowFlags(child.windowFlags() ^ (Qt::Window | Qt::SubWindow));
+ child.setWindowState(child.windowState() ^ Qt::WindowFullScreen);
+ child.show();
+ QTest::qWaitForWindowShown(&child);
+
+ // Check that parent is now visible again
+ QVERIFY(!parent.visibleRegion().subtracted(child.visibleRegion()).isEmpty());
+
+ // Native child widget should once again share parent's backing store
+ QVERIFY(0 != backingStore(parent));
+ QEXPECT_FAIL("", "QTBUG-10643", Continue);
+ QVERIFY(0 == backingStore(child));
+ }
+}
+
+#undef WAIT_AND_VERIFY
+
void tst_QWidget::rectOutsideCoordinatesLimit_task144779()
{
#ifdef Q_OS_WINCE_WM
generated by cgit v0.12 at 2024-10-26 06:39:55 (GMT)