diff options
| -rw-r--r-- | src/gui/graphicsview/qgraphicsview.cpp | 19 | ||||
| -rw-r--r-- | tests/auto/qgraphicsview/tst_qgraphicsview.cpp | 97 |
2 files changed, 113 insertions, 3 deletions
diff --git a/src/gui/graphicsview/qgraphicsview.cpp b/src/gui/graphicsview/qgraphicsview.cpp index ffe64aa..3bb40fb 100644 --- a/src/gui/graphicsview/qgraphicsview.cpp +++ b/src/gui/graphicsview/qgraphicsview.cpp @@ -1208,6 +1208,11 @@ void QGraphicsView::setTransformationAnchor(ViewportAnchor anchor) { Q_D(QGraphicsView); d->transformationAnchor = anchor; + + // Ensure mouse tracking is enabled in the case we are using AnchorUnderMouse + // in order to have up-to-date information for centering the view. + if (d->transformationAnchor == AnchorUnderMouse) + d->viewport->setMouseTracking(true); } /*! @@ -1235,6 +1240,11 @@ void QGraphicsView::setResizeAnchor(ViewportAnchor anchor) { Q_D(QGraphicsView); d->resizeAnchor = anchor; + + // Ensure mouse tracking is enabled in the case we are using AnchorUnderMouse + // in order to have up-to-date information for centering the view. + if (d->resizeAnchor == AnchorUnderMouse) + d->viewport->setMouseTracking(true); } /*! @@ -2597,9 +2607,12 @@ void QGraphicsView::setupViewport(QWidget *widget) } // We are only interested in mouse tracking if items - // accept hover events or use non-default cursors. - if (d->scene && (!d->scene->d_func()->allItemsIgnoreHoverEvents - || !d->scene->d_func()->allItemsUseDefaultCursor)) { + // accept hover events or use non-default cursors or if + // AnchorUnderMouse is used as transformation or resize anchor. + if ((d->scene && (!d->scene->d_func()->allItemsIgnoreHoverEvents + || !d->scene->d_func()->allItemsUseDefaultCursor)) + || d->transformationAnchor == AnchorUnderMouse + || d->resizeAnchor == AnchorUnderMouse) { widget->setMouseTracking(true); } diff --git a/tests/auto/qgraphicsview/tst_qgraphicsview.cpp b/tests/auto/qgraphicsview/tst_qgraphicsview.cpp index 69df39b..9e4321b 100644 --- a/tests/auto/qgraphicsview/tst_qgraphicsview.cpp +++ b/tests/auto/qgraphicsview/tst_qgraphicsview.cpp @@ -211,6 +211,7 @@ private slots: void centerOnDirtyItem(); void mouseTracking(); void mouseTracking2(); + void mouseTracking3(); void render(); void exposeRegion(); void update_data(); @@ -3403,6 +3404,102 @@ void tst_QGraphicsView::mouseTracking2() QCOMPARE(spy.count(), 1); } +void tst_QGraphicsView::mouseTracking3() +{ + // Mouse tracking should be automatically enabled if AnchorUnderMouse is used for + // view transform or resize. We never disable mouse tracking if it is already enabled. + + { // Make sure we enable mouse tracking when using AnchorUnderMouse for view transformation. + QGraphicsScene scene(-10000, -10000, 20000, 20000); + QGraphicsView view(&scene); + QVERIFY(!view.viewport()->hasMouseTracking()); + + view.setTransformationAnchor(QGraphicsView::AnchorUnderMouse); + QVERIFY(view.viewport()->hasMouseTracking()); + } + + { // Make sure we enable mouse tracking when using AnchorUnderMouse for view resizing. + QGraphicsScene scene(-10000, -10000, 20000, 20000); + QGraphicsView view(&scene); + QVERIFY(!view.viewport()->hasMouseTracking()); + + view.setResizeAnchor(QGraphicsView::AnchorUnderMouse); + QVERIFY(view.viewport()->hasMouseTracking()); + } + + { // Make sure we don't disable mouse tracking in setViewport/setScene (transformation anchor). + QGraphicsView view; + view.setTransformationAnchor(QGraphicsView::AnchorUnderMouse); + QVERIFY(view.viewport()->hasMouseTracking()); + + QWidget *viewport = new QWidget; + view.setViewport(viewport); + QVERIFY(viewport->hasMouseTracking()); + + QGraphicsScene scene(-10000, -10000, 20000, 20000); + view.setScene(&scene); + QVERIFY(viewport->hasMouseTracking()); + } + + { // Make sure we don't disable mouse tracking in setViewport/setScene (resize anchor). + QGraphicsView view; + view.setResizeAnchor(QGraphicsView::AnchorUnderMouse); + QVERIFY(view.viewport()->hasMouseTracking()); + + QWidget *viewport = new QWidget; + view.setViewport(viewport); + QVERIFY(viewport->hasMouseTracking()); + + QGraphicsScene scene(-10000, -10000, 20000, 20000); + view.setScene(&scene); + QVERIFY(viewport->hasMouseTracking()); + } + + // Make sure we don't disable mouse tracking when adding an item (transformation anchor). + { // Adding an item to the scene before the scene is set on the view. + QGraphicsScene scene(-10000, -10000, 20000, 20000); + QGraphicsRectItem *item = new QGraphicsRectItem(10, 10, 10, 10); + scene.addItem(item); + + QGraphicsView view; + view.setTransformationAnchor(QGraphicsView::AnchorUnderMouse); + view.setScene(&scene); + QVERIFY(view.viewport()->hasMouseTracking()); + } + + { // Adding an item to the scene after the scene is set on the view. + QGraphicsScene scene(-10000, -10000, 20000, 20000); + QGraphicsView view(&scene); + view.setTransformationAnchor(QGraphicsView::AnchorUnderMouse); + + QGraphicsRectItem *item = new QGraphicsRectItem(10, 10, 10, 10); + scene.addItem(item); + QVERIFY(view.viewport()->hasMouseTracking()); + } + + // Make sure we don't disable mouse tracking when adding an item (resize anchor). + { // Adding an item to the scene before the scene is set on the view. + QGraphicsScene scene(-10000, -10000, 20000, 20000); + QGraphicsRectItem *item = new QGraphicsRectItem(10, 10, 10, 10); + scene.addItem(item); + + QGraphicsView view; + view.setResizeAnchor(QGraphicsView::AnchorUnderMouse); + view.setScene(&scene); + QVERIFY(view.viewport()->hasMouseTracking()); + } + + { // Adding an item to the scene after the scene is set on the view. + QGraphicsScene scene(-10000, -10000, 20000, 20000); + QGraphicsView view(&scene); + view.setResizeAnchor(QGraphicsView::AnchorUnderMouse); + + QGraphicsRectItem *item = new QGraphicsRectItem(10, 10, 10, 10); + scene.addItem(item); + QVERIFY(view.viewport()->hasMouseTracking()); + } +} + class RenderTester : public QGraphicsRectItem { public: |