Examples and fixes for QML Window properties

Setting Window.color in QML takes effect immediately.
It was only possible to set the property at startup.
Examples demonstrate new Window property features.

Change-Id: Ic5b43d0d84371f3fe5c42223ccc98e6de27aed10
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>

examples/window/window/standalone.qml

@@ -44,13 +44,29 @@ import QtQuick.Window 2.0
 Item {
     width: 320
     height: 240
+    // It's not possible to set an Item's windowTitle.  If you want to modify
+    // window properties, you need to explicitly create a Window.
     Text {
+        id: text1
         anchors.centerIn: parent
         text: "First Window"
     }
     Rectangle {
         border.color: "black"
-        color: childWindow.visible ? "green" : "yellow"
+        radius: 4
+        anchors.top: text1.bottom
+        anchors.horizontalCenter: text1.horizontalCenter
+        width: 100
+        height: 30
+        TextInput {
+            id: ti1
+            focus: true // but the modal popup will prevent input while it is open
+            anchors.centerIn: parent
+        }
+    }
+    Rectangle {
+        border.color: "black"
+        color: childWindow.visible ? "goldenrod" : "beige"
         radius: height / 4
         anchors.bottom: parent.bottom
         anchors.right: parent.right
@@ -72,16 +88,39 @@ Item {
         id: childWindow
         width: 320
         height: 240
-        x: 320
-        y: 240
-        color: "green"
+        x: 220
+        y: 120
+        color: "beige"
+        title: "Second Window"
+        modality: Qt.ApplicationModal
+        flags: Qt.WindowStaysOnTopHint | Qt.FramelessWindowHint
         Text {
+            id: text2
             anchors.centerIn: parent
-            text: "Second Window"
+            text: "Modal Frameless Stay-on-Top Window"
         }
-        MouseArea{
-            anchors.fill: parent
-            onClicked: Qt.quit()
+        Text {
+            anchors.top: parent.top
+            anchors.right: parent.right
+            anchors.margins: 10
+            text: "X"
+            MouseArea{
+                anchors.fill: parent
+                onClicked: childWindow.visible = false
+            }
+        }
+        Rectangle {
+            border.color: "black"
+            radius: 4
+            anchors.top: text2.bottom
+            anchors.horizontalCenter: text2.horizontalCenter
+            width: 100
+            height: 30
+            TextInput {
+                id: ti2
+                focus: true
+                anchors.centerIn: parent
+            }
         }
     }
 }

examples/window/window/twowindows.qml

@@ -43,27 +43,47 @@ import QtQuick.Window 2.0
 
 QtObject {
     property var win1: Window {
-        width: 640
-        height: 480
+        width: 320
+        height: 240
         x: 0
         y: 0
         visible: true
         color: "#ccffff"
+        title: "First Window"
         Text {
             anchors.centerIn: parent
             text: "First Window"
+            Text {
+                id: statusText
+                anchors.top: parent.bottom
+                anchors.horizontalCenter: parent.horizontalCenter
+            }
+        }
+        MouseArea {
+            anchors.fill: parent
+            onClicked: win2.visible = !win2.visible
         }
     }
     property var win2: Window {
-        width: 640
-        height: 480
-        x: 640
-        y: 480
+        width: 320
+        height: 240
+        x: 220
+        y: 120
         visible: true
         color: "green"
-        Text {
-            anchors.centerIn: parent
-            text: "Second Window"
+        title: "Second Window: " + color
+        Rectangle {
+            anchors.fill: parent
+            anchors.margins: 10
+            Text {
+                anchors.centerIn: parent
+                text: "Second Window"
+            }
+            MouseArea {
+                anchors.fill: parent
+                onClicked: win2.color = "#ffffcc"
+            }
         }
+        onVisibleChanged: statusText.text = "second window is " + (visible ? "visible" : "invisible")
     }
 }

src/quick/items/qquickwindow.cpp

@@ -2776,6 +2776,7 @@ void QQuickWindow::setColor(const QColor &color)
 
     d->clearColor = color;
     emit colorChanged(color);
+    d->dirtyItem(contentItem());
 }
 
 QColor QQuickWindow::color() const

tools/qmlscene/main.cpp

@@ -476,6 +476,9 @@ int main(int argc, char ** argv)
                 if (contentItem) {
                     qxView = new QQuickView(&engine, NULL);
                     window = qxView;
+                    // Set window default properties; the qml can still override them
+                    QString oname = contentItem->objectName();
+                    window->setTitle(oname.isEmpty() ? QString::fromLatin1("qmlscene") : QString::fromLatin1("qmlscene: ") + oname);
                     window->setFlags(Qt::Window | Qt::WindowSystemMenuHint | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint);
                     if (options.resizeViewToRootItem)
                         qxView->setResizeMode(QQuickView::SizeViewToRootObject);