Fix childrenRect calculation

Because the 'bottom' and 'right' variables were both initialized to 0,
the bottom right corner of the children rect was clamped to
coordinates >= (0, 0).

Additionally, replace FLT_MAX with the more appropriate
std::numeric_limits<qreal>::max().

Task-number: QTBUG-38732
Change-Id: I073b0b44737cf1faed5e4f6a5d466dd830d451bf
Reviewed-by: Mitch Curtis <mitch.curtis@theqtcompany.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/auto/quick/qquickitem2/tst_qquickitem.cpp b/tests/auto/quick/qquickitem2/tst_qquickitem.cpp
index a31f7ab9ce..c7717b9cca 100644
--- a/tests/auto/quick/qquickitem2/tst_qquickitem.cpp
+++ b/tests/auto/quick/qquickitem2/tst_qquickitem.cpp
@@ -104,6 +104,7 @@ private slots:
     void childrenRectBug();
     void childrenRectBug2();
     void childrenRectBug3();
+    void childrenRectBottomRightCorner();
 
     void childrenProperty();
     void resourcesProperty();
@@ -2595,6 +2596,22 @@ void tst_QQuickItem::childrenRectBug3()
     delete window;
 }
 
+// QTBUG-38732
+void tst_QQuickItem::childrenRectBottomRightCorner()
+{
+    QQuickView *window = new QQuickView(0);
+    window->setSource(testFileUrl("childrenRectBottomRightCorner.qml"));
+    window->show();
+
+    QQuickItem *rect = window->rootObject()->findChild<QQuickItem*>("childrenRectProxy");
+    QCOMPARE(rect->x(), qreal(-100));
+    QCOMPARE(rect->y(), qreal(-100));
+    QCOMPARE(rect->width(), qreal(50));
+    QCOMPARE(rect->height(), qreal(50));
+
+    delete window;
+}
+
 // QTBUG-13893
 void tst_QQuickItem::transformCrash()
 {