diff options
Diffstat (limited to 'tests/auto/widgets/widgets/qabstractscrollarea')
-rw-r--r-- | tests/auto/widgets/widgets/qabstractscrollarea/tst_qabstractscrollarea.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tests/auto/widgets/widgets/qabstractscrollarea/tst_qabstractscrollarea.cpp b/tests/auto/widgets/widgets/qabstractscrollarea/tst_qabstractscrollarea.cpp index 01ecfb2ca9..ec1013a078 100644 --- a/tests/auto/widgets/widgets/qabstractscrollarea/tst_qabstractscrollarea.cpp +++ b/tests/auto/widgets/widgets/qabstractscrollarea/tst_qabstractscrollarea.cpp @@ -37,6 +37,7 @@ #include <qlabel.h> #include <qwidget.h> #include <qdialog.h> +#include <qscroller.h> class tst_QAbstractScrollArea : public QObject { @@ -57,6 +58,7 @@ private slots: void task214488_layoutDirection(); void margins(); + void resizeWithOvershoot(); }; tst_QAbstractScrollArea::tst_QAbstractScrollArea() @@ -398,5 +400,42 @@ void tst_QAbstractScrollArea::margins() QCOMPARE(area.viewportMargins(), margins); } +void tst_QAbstractScrollArea::resizeWithOvershoot() +{ + QWidget window; + + QScrollArea scrollArea(&window); + scrollArea.setWidget([]{ + QWidget *widget = new QWidget; + widget->setFixedSize(QSize(0, 200)); + return widget; + }()); + scrollArea.setGeometry(0, 20, 100, 100); + + QScroller::grabGesture(&scrollArea, QScroller::LeftMouseButtonGesture); + + window.show(); + QVERIFY(QTest::qWaitForWindowExposed(&window)); + + const QPoint originAtRest = scrollArea.viewport()->pos(); + + QPoint center = scrollArea.viewport()->mapToGlobal(scrollArea.viewport()->rect().center()); + center = window.windowHandle()->mapFromGlobal(center); + QTest::mousePress(window.windowHandle(), Qt::LeftButton, {}, center); + QTest::mouseMove(window.windowHandle(), center + QPoint(0, 50)); + QTRY_COMPARE(scrollArea.viewport()->pos(), originAtRest + QPoint(0, 25)); + QPoint overshootPosition = scrollArea.viewport()->pos(); + + // trigger a layout of the scroll area while there's overshoot + scrollArea.setGeometry(0, 0, 100, 120); + QCOMPARE(scrollArea.viewport()->pos(), overshootPosition); + QTest::mouseRelease(window.windowHandle(), Qt::LeftButton, {}, center + QPoint(0, 50)); + QTRY_COMPARE(scrollArea.viewport()->pos(), originAtRest); + // Process a few more events and verify that the scroll area + // doesn't overcompensate for the overshoot. + QApplication::processEvents(); + QTRY_COMPARE(scrollArea.viewport()->pos(), originAtRest); +} + QTEST_MAIN(tst_QAbstractScrollArea) #include "tst_qabstractscrollarea.moc" |