1 files changed, 61 insertions, 0 deletions
diff --git a/tests/auto/widgets/graphicsview/qgraphicsitem/tst_qgraphicsitem.cpp b/tests/auto/widgets/graphicsview/qgraphicsitem/tst_qgraphicsitem.cpp
index 3e24257736..9353aa0eba 100644
--- a/tests/auto/widgets/graphicsview/qgraphicsitem/tst_qgraphicsitem.cpp
+++ b/tests/auto/widgets/graphicsview/qgraphicsitem/tst_qgraphicsitem.cpp
@@ -471,6 +471,7 @@ private slots:
     void QTBUG_16374_crashInDestructor();
     void QTBUG_20699_focusScopeCrash();
     void QTBUG_30990_rightClickSelection();
+    void QTBUG_21618_untransformable_sceneTransform();
 
 private:
     QList<QGraphicsItem *> paintedItems;
@@ -11496,5 +11497,65 @@ void tst_QGraphicsItem::QTBUG_30990_rightClickSelection()
     QVERIFY(!item2->isSelected());
 }
 
+void tst_QGraphicsItem::QTBUG_21618_untransformable_sceneTransform()
+{
+    QGraphicsScene scene(0, 0, 150, 150);
+    scene.addRect(-2, -2, 4, 4);
+
+    QGraphicsItem *item1 = scene.addRect(0, 0, 100, 100, QPen(), Qt::red);
+    item1->setPos(50, 50);
+    item1->translate(50, 50);
+    item1->rotate(90);
+    QGraphicsItem *item2 = scene.addRect(0, 0, 100, 100, QPen(), Qt::green);
+    item2->setPos(50, 50);
+    item2->translate(50, 50);
+    item2->rotate(90);
+    item2->setFlags(QGraphicsItem::ItemIgnoresTransformations);
+
+    QGraphicsRectItem *item1_topleft = new QGraphicsRectItem(QRectF(-2, -2, 4, 4));
+    item1_topleft->setParentItem(item1);
+    item1_topleft->setBrush(Qt::black);
+    QGraphicsRectItem *item1_bottomright = new QGraphicsRectItem(QRectF(-2, -2, 4, 4));
+    item1_bottomright->setParentItem(item1);
+    item1_bottomright->setPos(100, 100);
+    item1_bottomright->setBrush(Qt::yellow);
+
+    QGraphicsRectItem *item2_topleft = new QGraphicsRectItem(QRectF(-2, -2, 4, 4));
+    item2_topleft->setParentItem(item2);
+    item2_topleft->setBrush(Qt::black);
+    QGraphicsRectItem *item2_bottomright = new QGraphicsRectItem(QRectF(-2, -2, 4, 4));
+    item2_bottomright->setParentItem(item2);
+    item2_bottomright->setPos(100, 100);
+    item2_bottomright->setBrush(Qt::yellow);
+
+    QCOMPARE(item1->sceneTransform(), item2->sceneTransform());
+    QCOMPARE(item1_topleft->sceneTransform(), item2_topleft->sceneTransform());
+    QCOMPARE(item1_bottomright->sceneTransform(), item2_bottomright->sceneTransform());
+    QCOMPARE(item1->deviceTransform(QTransform()), item2->deviceTransform(QTransform()));
+    QCOMPARE(item1->deviceTransform(QTransform()).map(QPointF()), QPointF(100, 100));
+    QCOMPARE(item2->deviceTransform(QTransform()).map(QPointF()), QPointF(100, 100));
+    QCOMPARE(item1->deviceTransform(QTransform()).map(QPointF(100, 100)), QPointF(0, 200));
+    QCOMPARE(item2->deviceTransform(QTransform()).map(QPointF(100, 100)), QPointF(0, 200));
+    QCOMPARE(item1_topleft->deviceTransform(QTransform()).map(QPointF()), QPointF(100, 100));
+    QCOMPARE(item2_topleft->deviceTransform(QTransform()).map(QPointF()), QPointF(100, 100));
+    QCOMPARE(item1_bottomright->deviceTransform(QTransform()).map(QPointF()), QPointF(0, 200));
+    QCOMPARE(item2_bottomright->deviceTransform(QTransform()).map(QPointF()), QPointF(0, 200));
+
+    item2->setParentItem(item1);
+
+    QCOMPARE(item2->deviceTransform(QTransform()).map(QPointF()), QPointF(100, 200));
+    QCOMPARE(item2->deviceTransform(QTransform()).map(QPointF(100, 100)), QPointF(0, 300));
+    QCOMPARE(item2_topleft->deviceTransform(QTransform()).map(QPointF()), QPointF(100, 200));
+    QCOMPARE(item2_bottomright->deviceTransform(QTransform()).map(QPointF()), QPointF(0, 300));
+
+    QTransform tx = QTransform::fromTranslate(100, 0);
+    QCOMPARE(item1->deviceTransform(tx).map(QPointF()), QPointF(200, 100));
+    QCOMPARE(item1->deviceTransform(tx).map(QPointF(100, 100)), QPointF(100, 200));
+    QCOMPARE(item2->deviceTransform(tx).map(QPointF()), QPointF(200, 200));
+    QCOMPARE(item2->deviceTransform(tx).map(QPointF(100, 100)), QPointF(100, 300));
+    QCOMPARE(item2_topleft->deviceTransform(tx).map(QPointF()), QPointF(200, 200));
+    QCOMPARE(item2_bottomright->deviceTransform(tx).map(QPointF()), QPointF(100, 300));
+}
+
 QTEST_MAIN(tst_QGraphicsItem)
 #include "tst_qgraphicsitem.moc"