Bring support of anchors in QML for QGraphicsWidget derived classes.

This commit add a extension object to bring the anchors property for
a QGraphicsWidget. The actual implement uses a separate object for storing
the anchor pointer. In the future it would be nice if the extension object
is the anchor itself. Also there are two connects extra for QGraphicsWidget
one can perhaps disappear with a later commit. Only baseline case is not
supported because QGraphicsWidget don't have any concept of baseline.

Reviewed-by:akennedy

2 files changed, 253 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativeanchors/data/anchorsqgraphicswidget.qml b/tests/auto/declarative/qdeclarativeanchors/data/anchorsqgraphicswidget.qml
new file mode 100644
index 0000000..ba424b9
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativeanchors/data/anchorsqgraphicswidget.qml
@@ -0,0 +1,163 @@
+import Qt 4.6
+import Qt.widgets 4.7
+
+Rectangle {
+    color: "white"
+    width: 240
+    height: 320
+    Rectangle { id: masterRect; objectName: "masterRect"; x: 26; width: 96; height: 20; color: "red" }
+    QGraphicsWidget {
+        id: rect1; objectName: "rect1"
+        y: 20; width: 10; height: 10
+        anchors.left: masterRect.left
+    }
+    QGraphicsWidget {
+        id: rect2; objectName: "rect2"
+        y: 20; width: 10; height: 10
+        anchors.left: masterRect.right
+    }
+    QGraphicsWidget {
+        id: rect3; objectName: "rect3"
+        y: 20; width: 10; height: 10
+        anchors.left: masterRect.horizontalCenter
+    }
+    QGraphicsWidget {
+        id: rect4; objectName: "rect4"
+        y: 30; width: 10; height: 10
+        anchors.right: masterRect.left
+    }
+    QGraphicsWidget {
+        id: rect5; objectName: "rect5"
+        y: 30; width: 10; height: 10
+        anchors.right: masterRect.right
+    }
+    QGraphicsWidget {
+        id: rect6; objectName: "rect6"
+        y: 30; width: 10; height: 10
+        anchors.right: masterRect.horizontalCenter
+    }
+    QGraphicsWidget {
+        id: rect7; objectName: "rect7"
+        y: 50; width: 10; height: 10
+        anchors.left: parent.left
+    }
+    QGraphicsWidget {
+        id: rect8; objectName: "rect8"
+        y: 50; width: 10; height: 10
+        anchors.left: parent.right
+    }
+    QGraphicsWidget {
+        id: rect9; objectName: "rect9"
+        y: 50; width: 10; height: 10
+        anchors.left: parent.horizontalCenter
+    }
+    QGraphicsWidget {
+        id: rect10; objectName: "rect10"
+        y: 60; width: 10; height: 10
+        anchors.right: parent.left
+    }
+    QGraphicsWidget {
+        id: rect11; objectName: "rect11"
+        y: 60; width: 10; height: 10
+        anchors.right: parent.right
+    }
+    QGraphicsWidget {
+        id: rect12; objectName: "rect12"
+        y: 60; width: 10; height: 10
+        anchors.right: parent.horizontalCenter
+    }
+    QGraphicsWidget {
+        id: rect13; objectName: "rect13"
+        x: 200; width: 10; height: 10
+        anchors.top: masterRect.bottom
+    }
+    QGraphicsWidget {
+        id: rect14; objectName: "rect14"
+        width: 10; height: 10;
+        anchors.verticalCenter: parent.verticalCenter
+    }
+    QGraphicsWidget {
+        id: rect15; objectName: "rect15"
+        y: 200; height: 10
+        anchors.left: masterRect.left
+        anchors.right: masterRect.right
+    }
+    QGraphicsWidget {
+        id: rect16; objectName: "rect16"
+        y: 220; height: 10
+        anchors.left: masterRect.left
+        anchors.horizontalCenter: masterRect.right
+    }
+    QGraphicsWidget {
+        id: rect17; objectName: "rect17"
+        y: 240; height: 10
+        anchors.right: masterRect.right
+        anchors.horizontalCenter: masterRect.left
+    }
+    QGraphicsWidget {
+        id: rect18; objectName: "rect18"
+        x: 180; width: 10
+        anchors.top: masterRect.bottom
+        anchors.bottom: rect12.top
+    }
+    QGraphicsWidget {
+        id: rect19; objectName: "rect19"
+        y: 70; width: 10; height: 10
+        anchors.horizontalCenter: parent.horizontalCenter
+    }
+    QGraphicsWidget {
+        id: rect20; objectName: "rect20"
+        y: 70; width: 10; height: 10
+        anchors.horizontalCenter: parent.right
+    }
+    QGraphicsWidget {
+        id: rect21; objectName: "rect21"
+        y: 70; width: 10; height: 10
+        anchors.horizontalCenter: parent.left
+    }
+    QGraphicsWidget {
+        id: rect22; objectName: "rect22"
+        width: 10; height: 10
+        anchors.centerIn: masterRect
+    }
+    QGraphicsWidget {
+        id: rect23; objectName: "rect23"
+        anchors.left: masterRect.left
+        anchors.leftMargin: 5
+        anchors.right: masterRect.right
+        anchors.rightMargin: 5
+        anchors.top: masterRect.top
+        anchors.topMargin: 5
+        anchors.bottom: masterRect.bottom
+        anchors.bottomMargin: 5
+    }
+    QGraphicsWidget {
+        id: rect24; objectName: "rect24"
+        width: 10; height: 10
+        anchors.horizontalCenter: masterRect.left
+        anchors.horizontalCenterOffset: width/2
+    }
+    QGraphicsWidget {
+        id: rect25; objectName: "rect25"
+        width: 10; height: 10
+        anchors.verticalCenter: rect12.top
+        anchors.verticalCenterOffset: height/2
+    }
+    Rectangle {
+        id: rect26; objectName: "rect26"
+        width: 10; height: 10
+        anchors.baseline: masterRect.top
+        anchors.baselineOffset: height/2
+    }
+    Text {
+        id: text1; objectName: "text1"
+        y: 200;
+        text: "Hello"
+    }
+    Text {
+        id: text2; objectName: "text2"
+        anchors.baseline: text1.baseline
+        anchors.left: text1.right
+        text: "World"
+    }
+}
diff --git a/tests/auto/declarative/qdeclarativeanchors/tst_qdeclarativeanchors.cpp b/tests/auto/declarative/qdeclarativeanchors/tst_qdeclarativeanchors.cpp
index 9eaa400..05974aa 100644
--- a/tests/auto/declarative/qdeclarativeanchors/tst_qdeclarativeanchors.cpp
+++ b/tests/auto/declarative/qdeclarativeanchors/tst_qdeclarativeanchors.cpp
@@ -40,6 +40,8 @@
 ****************************************************************************/
 #include <qtest.h>
 #include <QSignalSpy>
+#include <QtGui/QGraphicsWidget>
+#include <private/qgraphicsitem_p.h>
 #include <QtDeclarative/qdeclarativeengine.h>
 #include <QtDeclarative/qdeclarativecomponent.h>
 #include <QtDeclarative/qdeclarativeview.h>
@@ -59,9 +61,11 @@ public:
 
     template<typename T>
     T *findItem(QGraphicsObject *parent, const QString &id);
+    QGraphicsObject *findObject(QGraphicsObject *parent, const QString &objectName);
 
 private slots:
     void basicAnchors();
+    void basicAnchorsQGraphicsWidget();
     void loops();
     void illegalSets();
     void illegalSets_data();
@@ -99,6 +103,25 @@ T *tst_qdeclarativeanchors::findItem(QGraphicsObject *parent, const QString &obj
     return 0;
 }
 
+QGraphicsObject *tst_qdeclarativeanchors::findObject(QGraphicsObject *parent, const QString &objectName)
+{
+    QList<QGraphicsItem *> children = parent->childItems();
+    for (int i = 0; i < children.count(); ++i) {
+        QGraphicsObject *item = children.at(i)->toGraphicsObject();
+        if (item) {
+            if (objectName.isEmpty() || item->objectName() == objectName) {
+                return item;
+            }
+            item = findObject(item, objectName);
+            if (item)
+                return item;
+        }
+    }
+
+    return 0;
+}
+
+
 void tst_qdeclarativeanchors::basicAnchors()
 {
     QDeclarativeView *view = new QDeclarativeView;
@@ -166,6 +189,73 @@ void tst_qdeclarativeanchors::basicAnchors()
     delete view;
 }
 
+void tst_qdeclarativeanchors::basicAnchorsQGraphicsWidget()
+{
+    QDeclarativeView *view = new QDeclarativeView;
+    view->setSource(QUrl::fromLocalFile(SRCDIR "/data/anchorsqgraphicswidget.qml"));
+
+    qApp->processEvents();
+
+    //sibling horizontal
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect1"))->x(), 26.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect2"))->x(), 122.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect3"))->x(), 74.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect4"))->x(), 16.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect5"))->x(), 112.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect6"))->x(), 64.0);
+
+    //parent horizontal
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect7"))->x(), 0.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect8"))->x(), 240.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect9"))->x(), 120.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect10"))->x(), -10.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect11"))->x(), 230.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect12"))->x(), 110.0);
+
+    //vertical
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect13"))->y(), 20.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect14"))->y(), 155.0);
+
+    //stretch
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect15"))->x(), 26.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect15"))->property("width").toReal(), 96.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect16"))->x(), 26.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect16"))->property("width").toReal(), 192.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect17"))->x(), -70.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect17"))->property("width").toReal(), 192.0);
+
+    //vertical stretch
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect18"))->y(), 20.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect18"))->property("height").toReal(), 40.0);
+
+    //more parent horizontal
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect19"))->x(), 115.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect20"))->x(), 235.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect21"))->x(), -5.0);
+
+    //centerIn
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect22"))->x(), 69.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect22"))->y(), 5.0);
+
+     //margins
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect23"))->x(), 31.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect23"))->y(), 5.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect23"))->property("width").toReal(), 86.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect23"))->property("height").toReal(), 10.0);
+
+    // offsets
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect24"))->x(), 26.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect25"))->y(), 60.0);
+    QCOMPARE(findObject(view->rootObject(), QLatin1String("rect26"))->y(), 5.0);
+
+    //baseline
+    QDeclarativeText *text1 = findItem<QDeclarativeText>(view->rootObject(), QLatin1String("text1"));
+    QDeclarativeText *text2 = findItem<QDeclarativeText>(view->rootObject(), QLatin1String("text2"));
+    QCOMPARE(text1->y(), text2->y());
+
+    delete view;
+}
+
 // mostly testing that we don't crash
 void tst_qdeclarativeanchors::loops()
 {