Address some z-ordering issues in overlay windows

examples/tests/qmlTest.js

@@ -8,33 +8,6 @@ qmlWindow = new OverlayWindow({
     visible: true
 });
 
-//qmlWindow.eventBridge.webEventReceived.connect(function(data) {
+Script.setInterval(function() {
-//    print("JS Side event received: " + data);
+    qmlWindow.raise();
-//});
+}, 2 * 1000);
-//
-//var titles = ["A", "B", "C"];
-//var titleIndex = 0;
-//
-//Script.setInterval(function() {
-//    qmlWindow.eventBridge.emitScriptEvent("JS Event sent");
-//    var size = qmlWindow.size;
-//    var position = qmlWindow.position;
-//    print("Window visible: " + qmlWindow.visible)
-//    if (qmlWindow.visible) {
-//        print("Window size:  " + size.x + "x" + size.y)
-//        print("Window pos:   " + position.x + "x" + position.y)
-//        qmlWindow.setVisible(false);
-//    } else {
-//        qmlWindow.setVisible(true);
-//        qmlWindow.setTitle(titles[titleIndex]);
-//        qmlWindow.setSize(320 + Math.random() * 100, 240 + Math.random() * 100);
-//        titleIndex += 1;
-//        titleIndex %= titles.length;
-//    }
-//}, 2 * 1000);
-//
-//Script.setTimeout(function() {
-//    print("Closing script");
-//    qmlWindow.close();
-//    Script.stop();
-//}, 15 * 1000)

interface/resources/qml/AddressBarDialog.qml

@@ -16,6 +16,7 @@ import "styles"
 DialogContainer {
     id: root
     HifiConstants { id: hifi }
+    z: 1000
 
     objectName: "AddressBarDialog"
 

interface/resources/qml/Global.js

@@ -0,0 +1,165 @@
+var OFFSCREEN_ROOT_OBJECT_NAME = "desktopRoot"
+var OFFSCREEN_WINDOW_OBJECT_NAME = "topLevelWindow"
+
+function findChild(item, name) {
+    for (var i = 0; i < item.children.length; ++i) {
+        if (item.children[i].objectName === name) {
+            return item.children[i];
+        }
+    }
+    return null;
+}
+
+function findParent(item, name) {
+    while (item) {
+        if (item.objectName === name) {
+            return item;
+        }
+        item = item.parent;
+    }
+    return null;
+}
+
+function getDesktop(item) {
+    return findParent(item, OFFSCREEN_ROOT_OBJECT_NAME);
+}
+
+function findRootMenu(item) {
+    item = getDesktop(item);
+    return item ? item.rootMenu : null;
+}
+
+
+function getTopLevelWindows(item) {
+    var desktop = getDesktop(item);
+    var currentWindows = [];
+    if (!desktop) {
+        console.log("Could not find desktop for " + item)
+        return currentWindows;
+    }
+
+    for (var i = 0; i < desktop.children.length; ++i) {
+        var child = desktop.children[i];
+        if (Global.OFFSCREEN_WINDOW_OBJECT_NAME === child.objectName) {
+            var windowId = child.toString();
+            currentWindows.push(child)
+        }
+    }
+    return currentWindows;
+}
+
+
+function getDesktopWindow(item) {
+    item = findParent(item, OFFSCREEN_WINDOW_OBJECT_NAME);
+    return item;
+}
+
+function closeWindow(item) {
+    item = findDialog(item);
+    if (item) {
+        item.enabled = false
+    } else {
+        console.warn("Could not find top level dialog")
+    }
+}
+
+function findMenuChild(menu, childName) {
+    if (!menu) {
+        return null;
+    }
+
+    if (menu.type !== 2) {
+        console.warn("Tried to find child of a non-menu");
+        return null;
+    }
+
+    var items = menu.items;
+    var count = items.length;
+    for (var i = 0; i < count; ++i) {
+        var child = items[i];
+        var name;
+        switch (child.type) {
+            case 2:
+                name = child.title;
+                break;
+            case 1:
+                name = child.text;
+                break;
+            default:
+                break;
+        }
+
+        if (name && name === childName) {
+            return child;
+        }
+    }
+}
+
+function findMenu(rootMenu, path) {
+    if ('string' === typeof(path)) {
+        path = [ path ]
+    }
+
+    var currentMenu = rootMenu;
+    for (var i = 0; currentMenu && i < path.length; ++i) {
+        currentMenu = findMenuChild(currentMenu, path[i]);
+    }
+
+    return currentMenu;
+}
+
+function findInRootMenu(item, path) {
+    return findMenu(findRootMenu(item), path);
+}
+
+
+function menuItemsToListModel(parent, items) {
+    var newListModel = Qt.createQmlObject('import QtQuick 2.5; ListModel {}', parent);
+    for (var i = 0; i < items.length; ++i) {
+        var item = items[i];
+        switch (item.type) {
+        case 2:
+            newListModel.append({"type":item.type, "name": item.title, "item": item})
+            break;
+        case 1:
+            newListModel.append({"type":item.type, "name": item.text, "item": item})
+            break;
+        case 0:
+            newListModel.append({"type":item.type, "name": "-----", "item": item})
+            break;
+        }
+    }
+    return newListModel;
+}
+
+function raiseWindow(item) {
+    var targetWindow = getDesktopWindow(item);
+    if (!targetWindow) {
+        console.warn("Could not find top level window for " + item);
+        return;
+    }
+    
+    var desktop = getDesktop(targetWindow);
+    if (!desktop) {
+        //console.warn("Could not find desktop for window " + targetWindow);
+        return;
+    }
+        
+    var maxZ = 0;
+    var minZ = 100000;
+    var windows = desktop.windows;
+    windows.sort(function(a, b){
+       return a.z - b.z; 
+    });
+    var lastZ = -1;
+    var lastTargetZ = -1;
+    for (var i = 0; i < windows.length; ++i) {
+        var window = windows[i];
+        if (window.z > lastZ) {
+            lastZ = window.z;
+            ++lastTargetZ;
+        }
+        window.z = lastTargetZ;
+    }
+    targetWindow.z = lastTargetZ + 1;
+}

interface/resources/qml/QmlWindow.qml

@@ -5,6 +5,8 @@ import QtWebChannel 1.0
 import QtWebSockets 1.0
 import "qrc:///qtwebchannel/qwebchannel.js" as WebChannel
 
+import "Global.js" as Global
+
 import "controls"
 import "styles"
 
@@ -23,6 +25,10 @@ VrDialog {
     contentImplicitWidth: clientArea.implicitWidth
     contentImplicitHeight: clientArea.implicitHeight
     property alias source: pageLoader.source 
+    
+    function raiseWindow() {
+        Global.raiseWindow(root)
+    }
 
     Item {
         id: clientArea

interface/resources/qml/Root.qml

@@ -2,16 +2,23 @@ import Hifi 1.0
 import QtQuick 2.5
 import QtQuick.Controls 1.4
 
+import "Global.js" as Global
+
 // This is our primary 'window' object to which all dialogs and controls will 
 // be childed. 
 Root {
     id: root
-    objectName: "desktopRoot"
+    objectName: Global.OFFSCREEN_ROOT_OBJECT_NAME
-    anchors.fill: parent
+    anchors.fill: parent;
+    property var windows: [];
     property var rootMenu: Menu {
         objectName: "rootMenu"
     }
 
+    onChildrenChanged:  {
+        windows = Global.getTopLevelWindows(root);
+    }
+
     onParentChanged: {
         forceActiveFocus();
     }

interface/resources/qml/controls/VrDialog.qml

@@ -3,6 +3,8 @@ import QtQuick.Controls 1.2
 import "."
 import "../styles"
 
+import "../Global.js" as Global
+
 /*
  * FIXME Need to create a client property here so that objects can be
  * placed in it without having to think about positioning within the outer 
@@ -45,9 +47,18 @@ DialogBase {
         // trigger making it visible.
         if (enabled) {
             visible = true;
+            if (root.parent) {
+                Global.raiseWindow(root);
+            }
         }
     }
 
+    onParentChanged: {
+        if (enabled && parent) {
+            Global.raiseWindow(root);
+        }
+    } 
+
     // The actual animator
     Behavior on opacity {
         NumberAnimation {
@@ -60,6 +71,12 @@ DialogBase {
     onOpacityChanged: {
         visible = (opacity != 0.0);
     }
+    
+    Component.onCompleted: {
+        if (visible) {
+            Global.raiseWindow(root);
+        }
+    }
 
     // Some dialogs should be destroyed when they become invisible,
     // so handle that
@@ -118,6 +135,7 @@ DialogBase {
         y: root.titleY
         width: root.titleWidth
         height: root.titleHeight
+        onClicked: Global.raiseWindow(root)
 
         drag {
             target: root

libraries/ui/src/QmlWindowClass.cpp

@@ -15,6 +15,8 @@
 #include <QtScript/QScriptEngine>
 
 #include <QtQuick/QQuickItem>
+#include <QtQml/QQmlContext>
+#include <QtQml/QQmlEngine>
 
 #include <QtWebSockets/QWebSocketServer>
 #include <QtWebSockets/QWebSocket>
@@ -141,6 +143,7 @@ QScriptValue QmlWindowClass::internalConstructor(const QString& qmlSource,
         Q_ARG(std::function<void(QQmlContext*, QObject*)>, [&](QQmlContext* context, QObject* object) {
             setupServer();
             retVal = function(context, object);
+            context->engine()->setObjectOwnership(retVal->_qmlWindow, QQmlEngine::CppOwnership);
             registerObject(url.toLower(), retVal);
             if (!title.isEmpty()) {
                 retVal->setTitle(title);
@@ -274,7 +277,7 @@ void QmlWindowClass::hasClosed() {
 }
 
 void QmlWindowClass::raise() {
-    // FIXME
+    QMetaObject::invokeMethod(_qmlWindow, "raiseWindow", Qt::QueuedConnection);
 }
 
 #include "QmlWindowClass.moc"