diff options
Diffstat (limited to 'tests/auto/widgets/graphicsview/qgraphicsproxywidget/tst_qgraphicsproxywidget.cpp')
| -rw-r--r-- | tests/auto/widgets/graphicsview/qgraphicsproxywidget/tst_qgraphicsproxywidget.cpp | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/tests/auto/widgets/graphicsview/qgraphicsproxywidget/tst_qgraphicsproxywidget.cpp b/tests/auto/widgets/graphicsview/qgraphicsproxywidget/tst_qgraphicsproxywidget.cpp index b5ed792c67..4bd0dd0a8c 100644 --- a/tests/auto/widgets/graphicsview/qgraphicsproxywidget/tst_qgraphicsproxywidget.cpp +++ b/tests/auto/widgets/graphicsview/qgraphicsproxywidget/tst_qgraphicsproxywidget.cpp @@ -157,7 +157,11 @@ private slots: void mapToGlobal(); void mapToGlobalWithoutScene(); void QTBUG_43780_visibility(); +#if QT_CONFIG(wheelevent) + void wheelEventPropagation(); +#endif void forwardTouchEvent(); + void touchEventPropagation(); }; // Subclass that exposes the protected functions. @@ -3632,6 +3636,149 @@ public: } }; +#if QT_CONFIG(wheelevent) +/*! + QGraphicsProxyWidget receives wheel events from QGraphicsScene, and then + generates a new event that is sent spontaneously in order to enable event + propagation. This requires extra handling of the wheel grabbing we do for + high-precision wheel event streams. + + Test that this doesn't trigger infinite recursion, while still resulting in + event propagation within the embedded widget hierarchy, and back to the + QGraphicsView if the event is not accepted. + + See tst_QApplication::wheelEventPropagation for a similar test. +*/ +void tst_QGraphicsProxyWidget::wheelEventPropagation() +{ + QGraphicsScene scene(0, 0, 600, 600); + + QWidget *label = new QLabel("Direct"); + label->setFixedSize(300, 30); + QGraphicsProxyWidget *labelProxy = scene.addWidget(label); + labelProxy->setPos(0, 50); + labelProxy->show(); + + class NestedWidget : public QWidget + { + public: + NestedWidget(const QString &text) + { + setObjectName("Nested Label"); + QLabel *nested = new QLabel(text); + QHBoxLayout *hbox = new QHBoxLayout; + hbox->addWidget(nested); + setLayout(hbox); + } + + int wheelEventCount = 0; + protected: + void wheelEvent(QWheelEvent *) override + { + ++wheelEventCount; + } + }; + NestedWidget *nestedWidget = new NestedWidget("Nested"); + nestedWidget->setFixedSize(300, 60); + QGraphicsProxyWidget *nestedProxy = scene.addWidget(nestedWidget); + nestedProxy->setPos(0, 120); + nestedProxy->show(); + + QGraphicsView view(&scene); + view.setFixedHeight(200); + view.show(); + + QVERIFY(QTest::qWaitForWindowActive(&view)); + QVERIFY(view.verticalScrollBar()->isVisible()); + + view.verticalScrollBar()->setValue(0); + QSignalSpy scrollSpy(view.verticalScrollBar(), &QScrollBar::valueChanged); + + const QPoint wheelPosition(50, 25); + auto wheelUp = [&view, wheelPosition](Qt::ScrollPhase phase) { + const QPoint global = view.mapToGlobal(wheelPosition); + const QPoint pixelDelta(0, -25); + const QPoint angleDelta(0, -120); + QWindowSystemInterface::handleWheelEvent(view.windowHandle(), wheelPosition, global, + pixelDelta, angleDelta, Qt::NoModifier, + phase); + QCoreApplication::processEvents(); + }; + + int scrollCount = 0; + // test non-kinetic events; they are not grabbed, and should scroll the view unless + // accepted by the embedded widget + QCOMPARE(view.itemAt(wheelPosition), nullptr); + wheelUp(Qt::NoScrollPhase); + QCOMPARE(scrollSpy.count(), ++scrollCount); + + // wheeling on the label, which ignores the event, should scroll the view + QCOMPARE(view.itemAt(wheelPosition), labelProxy); + wheelUp(Qt::NoScrollPhase); + QCOMPARE(scrollSpy.count(), ++scrollCount); + QCOMPARE(view.itemAt(wheelPosition), labelProxy); + wheelUp(Qt::NoScrollPhase); + QCOMPARE(scrollSpy.count(), ++scrollCount); + + // left the widget + QCOMPARE(view.itemAt(wheelPosition), nullptr); + wheelUp(Qt::NoScrollPhase); + QCOMPARE(scrollSpy.count(), ++scrollCount); + + // reached the nested widget, which accepts the wheel event, so no more scrolling + QCOMPARE(view.itemAt(wheelPosition), nestedProxy); + // remember this position for later + const int scrollBarValueOnNestedProxy = view.verticalScrollBar()->value(); + wheelUp(Qt::NoScrollPhase); + QCOMPARE(scrollSpy.count(), scrollCount); + QCOMPARE(nestedWidget->wheelEventCount, 1); + + // reset, try with kinetic events + view.verticalScrollBar()->setValue(0); + ++scrollCount; + + // starting a scroll outside any widget and scrolling through the widgets should work, + // no matter if the widget accepts wheel events - the view has the grab + QCOMPARE(view.itemAt(wheelPosition), nullptr); + wheelUp(Qt::ScrollBegin); + QCOMPARE(scrollSpy.count(), ++scrollCount); + for (int i = 0; i < 5; ++i) { + wheelUp(Qt::ScrollUpdate); + QCOMPARE(scrollSpy.count(), ++scrollCount); + } + wheelUp(Qt::ScrollEnd); + QCOMPARE(scrollSpy.count(), ++scrollCount); + + // reset + view.verticalScrollBar()->setValue(0); + scrollCount = scrollSpy.count(); + + // starting a scroll on a widget that doesn't accept wheel events + // should also scroll the view, which still gets the grab + wheelUp(Qt::NoScrollPhase); + scrollCount = scrollSpy.count(); + + QCOMPARE(view.itemAt(wheelPosition), labelProxy); + wheelUp(Qt::ScrollBegin); + QCOMPARE(scrollSpy.count(), ++scrollCount); + for (int i = 0; i < 5; ++i) { + wheelUp(Qt::ScrollUpdate); + QCOMPARE(scrollSpy.count(), ++scrollCount); + } + wheelUp(Qt::ScrollEnd); + QCOMPARE(scrollSpy.count(), ++scrollCount); + + // starting a scroll on a widget that does accept wheel events + // should not scroll the view + view.verticalScrollBar()->setValue(scrollBarValueOnNestedProxy); + scrollCount = scrollSpy.count(); + + QCOMPARE(view.itemAt(wheelPosition), nestedProxy); + wheelUp(Qt::ScrollBegin); + QCOMPARE(scrollSpy.count(), scrollCount); +} +#endif // QT_CONFIG(wheelevent) + // QTBUG_45737 void tst_QGraphicsProxyWidget::forwardTouchEvent() { @@ -3670,5 +3817,173 @@ void tst_QGraphicsProxyWidget::forwardTouchEvent() QCOMPARE(eventSpy.counts[QEvent::TouchEnd], 1); } +void tst_QGraphicsProxyWidget::touchEventPropagation() +{ + QGraphicsScene scene(0, 0, 300, 200); + QWidget *simpleWidget = new QWidget; + simpleWidget->setObjectName("simpleWidget"); + simpleWidget->setAttribute(Qt::WA_AcceptTouchEvents, true); + QGraphicsProxyWidget *simpleProxy = scene.addWidget(simpleWidget); + simpleProxy->setAcceptTouchEvents(true); + simpleProxy->setGeometry(QRectF(0, 0, 30, 30)); + + QWidget *formWidget = new QWidget; + formWidget->setObjectName("formWidget"); + formWidget->setAttribute(Qt::WA_AcceptTouchEvents, true); + QPushButton *pushButton1 = new QPushButton("One"); + pushButton1->setObjectName("pushButton1"); + pushButton1->setAttribute(Qt::WA_AcceptTouchEvents, true); + QPushButton *pushButton2 = new QPushButton("Two"); + pushButton2->setObjectName("pushButton2"); + pushButton2->setAttribute(Qt::WA_AcceptTouchEvents, true); + QVBoxLayout *vbox = new QVBoxLayout; + vbox->addWidget(pushButton1); + vbox->addWidget(pushButton2); + formWidget->setLayout(vbox); + QGraphicsProxyWidget *formProxy = scene.addWidget(formWidget); + formProxy->setAcceptTouchEvents(true); + formProxy->setGeometry(QRectF(50, 50, 200, 160)); + + QGraphicsView view(&scene); + view.setFixedSize(scene.width(), scene.height()); + view.verticalScrollBar()->setValue(0); + view.horizontalScrollBar()->setValue(0); + view.show(); + QVERIFY(QTest::qWaitForWindowExposed(&view)); + + class TouchEventSpy : public QObject + { + public: + using QObject::QObject; + + struct TouchRecord { + QObject *receiver; + QEvent::Type eventType; + QHash<int, QPointF> positions; + }; + QList<TouchRecord> records; + + int count() const { return records.count(); } + TouchRecord at(int i) const { return records.at(i); } + void clear() { records.clear(); } + protected: + bool eventFilter(QObject *receiver, QEvent *event) override + { + switch (event->type()) { + case QEvent::TouchBegin: + case QEvent::TouchUpdate: + case QEvent::TouchCancel: + case QEvent::TouchEnd: { + QTouchEvent *touchEvent = static_cast<QTouchEvent *>(event); + // instead of detaching each QEventPoint, just store the relative positions + QHash<int, QPointF> positions; + for (const auto &touchPoint : touchEvent->points()) + positions[touchPoint.id()] = touchPoint.position(); + records << TouchRecord{receiver, event->type(), positions}; + break; + } + default: + break; + } + return QObject::eventFilter(receiver, event); + } + } eventSpy; + qApp->installEventFilter(&eventSpy); + + auto touchDevice = QTest::createTouchDevice(); + const QPointF simpleCenter = simpleProxy->geometry().center(); + + // On systems without double conversion we might get different rounding behavior. + // One pixel off in any direction is acceptable for this test. + constexpr auto closeEnough = [](QPointF exp, QPointF act) -> bool { + const QRectF expArea(exp - QPointF(1., 1.), exp + QPointF(1., 1.)); + const bool contains = expArea.contains(act); + if (!contains) + qWarning() << act << "not in" << exp; + return contains; + }; + + // verify that the embedded widget gets the correctly translated event + { + auto sequence = QTest::touchEvent(view.viewport(), touchDevice); + sequence.press(0, simpleCenter.toPoint()); + } + // window, viewport, scene, simpleProxy, simpleWidget + QCOMPARE(eventSpy.count(), 5); + auto record = eventSpy.at(eventSpy.count() - 1); + QCOMPARE(record.receiver, simpleWidget); + QCOMPARE(record.eventType, QEvent::TouchBegin); + QCOMPARE(record.positions.count(), 1); + QVERIFY(closeEnough(record.positions[0], simpleCenter)); + eventSpy.clear(); + + // verify that the layout of formWidget is how we expect it to be + QCOMPARE(formWidget->childAt(QPoint(5, 5)), nullptr); + const QPoint pb1Center = pushButton1->rect().center(); + QCOMPARE(formWidget->childAt(pushButton1->pos() + pb1Center), pushButton1); + const QPoint pb2Center = pushButton2->rect().center(); + QCOMPARE(formWidget->childAt(pushButton2->pos() + pb2Center), pushButton2); + + // Single touch point to nested widget not accepting event. + // Event should bubble up and translate correctly. + { + auto sequence = QTest::touchEvent(view.viewport(), touchDevice); + sequence.press(0, pushButton1->pos() + pb1Center + formProxy->pos().toPoint()); + } + // ..., formProxy, pushButton1, formWidget + QCOMPARE(eventSpy.count(), 6); + record = eventSpy.at(eventSpy.count() - 2); + QCOMPARE(record.receiver, pushButton1); + QVERIFY(closeEnough(record.positions[0], pb1Center)); + QCOMPARE(record.eventType, QEvent::TouchBegin); + // pushButton doesn't accept the point, so it propagates to parent + record = eventSpy.at(eventSpy.count() - 1); + QCOMPARE(record.receiver, formWidget); + QVERIFY(closeEnough(record.positions[0], pushButton1->pos() + pb1Center)); + QCOMPARE(record.eventType, QEvent::TouchBegin); + eventSpy.clear(); + + // multi-touch to different widgets + { + auto sequence = QTest::touchEvent(view.viewport(), touchDevice); + sequence.press(0, pushButton1->pos() + pb1Center + formProxy->pos().toPoint()); + sequence.press(1, pushButton2->pos() + pb2Center + formProxy->pos().toPoint()); + } + // window, viewport, scene, formProxy, pushButton1, formWidget, pushButton2, formWidget + QCOMPARE(eventSpy.count(), 8); + record = eventSpy.at(4); + // the order in which the two presses are delivered is not defined + const bool pb1First = record.receiver == pushButton1; + if (pb1First) { + QCOMPARE(record.receiver, pushButton1); + QVERIFY(closeEnough(record.positions[0], pb1Center)); + } else { + QCOMPARE(record.receiver, pushButton2); + QVERIFY(closeEnough(record.positions[1], pb2Center)); + } + record = eventSpy.at(5); + QCOMPARE(record.receiver, formWidget); + if (pb1First) { + QVERIFY(closeEnough(record.positions[0], pushButton1->pos() + pb1Center)); + } else { + QVERIFY(closeEnough(record.positions[1], pushButton2->pos() + pb2Center)); + } + record = eventSpy.at(6); + if (pb1First) { + QCOMPARE(record.receiver, pushButton2); + QVERIFY(closeEnough(record.positions[1], pb2Center)); + } else { + QCOMPARE(record.receiver, pushButton1); + QVERIFY(closeEnough(record.positions[0], pb1Center)); + } + record = eventSpy.at(7); + QCOMPARE(record.receiver, formWidget); + if (pb1First) { + QVERIFY(closeEnough(record.positions[1], pushButton2->pos() + pb2Center)); + } else { + QVERIFY(closeEnough(record.positions[0], pushButton1->pos() + pb1Center)); + } +} + QTEST_MAIN(tst_QGraphicsProxyWidget) #include "tst_qgraphicsproxywidget.moc" |