Integrate some QML examples and demos into qtdemo

Includes minor changes and additions to the existing doc and examples,
so that they follow Qt conventions better.

Note that while blurring the background was part of the plan for the
embedded QML viewer I could not get it to perform well enough. In the
future, when blur is fast enough (or someone else can get it to
perform better than I) -use-blur should become the default, and
-no-blur the option.

Task-number: QTBUG-10582

1 files changed, 99 insertions, 11 deletions

diff --git a/demos/qtdemo/menumanager.cpp b/demos/qtdemo/menumanager.cpp
index 40af30f..9eb5664 100644
--- a/demos/qtdemo/menumanager.cpp
+++ b/demos/qtdemo/menumanager.cpp
@@ -59,6 +59,8 @@ MenuManager::MenuManager()
     this->tickerInAnim = 0;
     this->upButton = 0;
     this->downButton = 0;
+    this->mainSceneBlur = 0;
+    this->qmlShadow = 0;
     this->helpEngine = 0;
     this->score = new Score();
     this->currentMenu = QLatin1String("[no menu visible]");
@@ -152,6 +154,9 @@ void MenuManager::itemSelected(int userCode, const QString &menuName)
     case LAUNCH:
         this->launchExample(this->currentInfo);
         break;
+    case LAUNCH_QML:
+        this->launchQmlExample(this->currentInfo);
+        break;
     case DOCUMENTATION:
         this->showDocInAssistant(this->currentInfo);
         break;
@@ -169,6 +174,8 @@ void MenuManager::itemSelected(int userCode, const QString &menuName)
         this->score->queueMovie(this->currentInfo + " -out");
         this->score->queueMovie(this->currentInfo + " -buttons -out", Score::NEW_ANIMATION_ONLY);
         this->score->queueMovie("back -out", Score::ONLY_IF_VISIBLE);
+        if(qmlRoot)
+            qmlRoot->setProperty("show", QVariant(false));
         // book-keeping:
         this->currentMenuCode = ROOT;
         this->currentMenu = menuName + " -menu1";
@@ -191,6 +198,8 @@ void MenuManager::itemSelected(int userCode, const QString &menuName)
         this->score->queueMovie(this->currentMenu + " -out", Score::FROM_START, Score::LOCK_ITEMS);
         this->score->queueMovie(this->currentMenuButtons + " -out", Score::FROM_START, Score::LOCK_ITEMS);
         this->score->queueMovie(this->currentInfo + " -out");
+        if(qmlRoot)
+            qmlRoot->setProperty("show", QVariant(false));
         // book-keeping:
         this->currentMenuCode = MENU1;
         this->currentCategory = menuName;
@@ -208,6 +217,8 @@ void MenuManager::itemSelected(int userCode, const QString &menuName)
         // out:
         this->score->queueMovie(this->currentInfo + " -out", Score::NEW_ANIMATION_ONLY);
         this->score->queueMovie(this->currentInfo + " -buttons -out", Score::NEW_ANIMATION_ONLY);
+        if(qmlRoot)
+            qmlRoot->setProperty("show", QVariant(false));
         // book-keeping:
         this->currentMenuCode = MENU2;
         this->currentInfo = menuName;
@@ -242,6 +253,8 @@ void MenuManager::itemSelected(int userCode, const QString &menuName)
             // out:
             this->score->queueMovie(this->currentInfo + " -out", Score::NEW_ANIMATION_ONLY);
             this->score->queueMovie(this->currentInfo + " -buttons -out", Score::NEW_ANIMATION_ONLY);
+            if(qmlRoot)
+                qmlRoot->setProperty("show", QVariant(false));
             // book-keeping:
             this->currentMenuCode = MENU1;
             this->currentMenuButtons = this->currentCategory + " -buttons";
@@ -343,6 +356,35 @@ void MenuManager::launchExample(const QString &name)
 #endif
 }
 
+void MenuManager::launchQmlExample(const QString &name)
+{
+    if(!qmlRoot){
+        exampleError(QProcess::UnknownError);
+        return;
+    }
+    //resolveQmlFilename - refactor to separate fn?
+    QString dirName = this->info[name]["dirname"];
+    QString category = this->info[name]["category"];
+    QString fileName = this->info[name]["filename"];
+    QDir dir;
+    if (category == "demos")
+        dir = QDir(QLibraryInfo::location(QLibraryInfo::DemosPath));
+    else
+        dir = QDir(QLibraryInfo::location(QLibraryInfo::ExamplesPath));
+    QFile file(dir.path() + "/" + dirName + "/" + fileName + "/" + fileName.split('/').last() + ".qml");
+    if(!file.exists()){
+        //try main.qml as well
+        file.setFileName(dir.path() + "/" + dirName + "/" + fileName + "/" + "main.qml");
+        if(!file.exists()){
+            exampleError(QProcess::UnknownError);
+            return;
+        }
+    }
+
+    qmlRoot->setProperty("show", QVariant(true));
+    qmlRoot->setProperty("source", file.fileName());
+}
+
 void MenuManager::exampleFinished()
 {
 }
@@ -359,6 +401,15 @@ void MenuManager::init(MainWindow *window)
 {
     this->window = window;
 
+    //Create blur for later use
+    // Note that blur is DISABLED by default because it's too slow, even on Desktop machines
+    if(!Colors::noBlur){
+        this->mainSceneBlur = new QGraphicsBlurEffect(this);
+        this->mainSceneBlur->setEnabled(false);
+        this->mainSceneBlur->setBlurRadius(0);
+        this->window->mainSceneRoot->setGraphicsEffect(mainSceneBlur);
+    }
+
     // Create div:
     this->createTicker();
     this->createUpnDownButtons();
@@ -385,6 +436,37 @@ void MenuManager::init(MainWindow *window)
 
         level2MenuNode = level2MenuNode.nextSibling();
     }
+
+    // Create QML Loader
+    qmlRegisterType<QGraphicsBlurEffect>("Effects", 1, 0, "Blur");
+    declarativeEngine = new QDeclarativeEngine(this);
+    MenuManager::instance()->declarativeEngine->rootContext()->setContextProperty("realBlur", this->mainSceneBlur);
+    QDeclarativeComponent component(declarativeEngine, QUrl("qrc:qml/qmlShell.qml"), this);
+    qmlRoot = 0;
+    if(component.isReady())
+        qmlRoot = qobject_cast<QDeclarativeItem*>(component.create());
+    else
+        qDebug() << component.status() << component.errorString();
+    if(qmlRoot){
+        qmlRoot->setHeight(this->window->scene->sceneRect().height());
+        qmlRoot->setWidth(this->window->scene->sceneRect().width());
+        qmlRoot->setZValue(1000);//Above other items
+        qmlRoot->setCursor(Qt::ArrowCursor);
+        window->scene->addItem(qmlRoot);
+        if(!Colors::noBlur){
+            qmlShadow = new QGraphicsDropShadowEffect(this);
+            qmlShadow->setOffset(4);
+            qmlRoot->setGraphicsEffect(qmlShadow);
+        }
+
+        //Note that QML adds key handling to the app.
+        window->viewport()->setFocusPolicy(Qt::NoFocus);//Correct keyboard focus handling
+        window->setFocusPolicy(Qt::StrongFocus);
+        window->scene->setStickyFocus(true);
+        window->setFocus();
+    }else{
+        qDebug() << "Error intializing QML subsystem, Declarative examples will not work";
+    }
 }
 
 void MenuManager::readInfoAboutExample(const QDomElement &example)
@@ -392,13 +474,14 @@ void MenuManager::readInfoAboutExample(const QDomElement &example)
     QString name = example.attribute("name");
     if (this->info.contains(name))
         qWarning() << "__WARNING: MenuManager::readInfoAboutExample: Demo/example with name"
-                    << name << "appears twize in the xml-file!__";
+                    << name << "appears twice in the xml-file!__";
 
     this->info[name]["filename"] = example.attribute("filename");
     this->info[name]["category"] = example.parentNode().toElement().tagName();
     this->info[name]["dirname"] = example.parentNode().toElement().attribute("dirname");
     this->info[name]["changedirectory"] = example.attribute("changedirectory");
     this->info[name]["image"] = example.attribute("image");
+    this->info[name]["qml"] = example.attribute("qml");
 }
 
 QString MenuManager::resolveDataDir(const QString &name)
@@ -454,7 +537,7 @@ QString MenuManager::resolveDocUrl(const QString &name)
     QString fileName = this->info[name]["filename"];
 
     if (category == "demos")
-        return this->helpRootUrl + "demos-" + fileName + ".html";
+        return this->helpRootUrl + "demos-" + fileName.replace("/", "-") + ".html";
     else
         return this->helpRootUrl + dirName.replace("/", "-") + "-" + fileName + ".html";
 }
@@ -474,6 +557,9 @@ QByteArray MenuManager::getImage(const QString &name)
     QString imageName = this->info[name]["image"];
     QString category = this->info[name]["category"];
     QString fileName = this->info[name]["filename"];
+    bool qml = (this->info[name]["qml"] == QLatin1String("true"));
+    if(qml)
+        fileName = QLatin1String("qml-") + fileName.split('/').last();
 
     if (imageName.isEmpty()){
         if (category == "demos")
@@ -493,7 +579,7 @@ void MenuManager::createRootMenu(const QDomElement &el)
 {
     QString name = el.attribute("name");
     createMenu(el, MENU1);
-    createInfo(new MenuContentItem(el, this->window->scene, 0), name + " -info");
+    createInfo(new MenuContentItem(el, this->window->scene, this->window->mainSceneRoot), name + " -info");
 
     Movie *menuButtonsIn = this->score->insertMovie(name + " -buttons");
     Movie *menuButtonsOut = this->score->insertMovie(name + " -buttons -out");
@@ -505,19 +591,21 @@ void MenuManager::createSubMenu(const QDomElement &el)
 {
     QString name = el.attribute("name");
     createMenu(el, MENU2);
-    createInfo(new MenuContentItem(el, this->window->scene, 0), name + " -info");
+    createInfo(new MenuContentItem(el, this->window->scene, this->window->mainSceneRoot), name + " -info");
 }
 
 void MenuManager::createLeafMenu(const QDomElement &el)
 {
     QString name = el.attribute("name");
-    createInfo(new ExampleContent(name, this->window->scene, 0), name);
+    createInfo(new ExampleContent(name, this->window->scene, this->window->mainSceneRoot), name);
 
     Movie *infoButtonsIn = this->score->insertMovie(name + " -buttons");
     Movie *infoButtonsOut = this->score->insertMovie(name + " -buttons -out");
     createLowRightLeafButton("Documentation", 600, DOCUMENTATION, infoButtonsIn, infoButtonsOut, 0);
     if (el.attribute("executable") != "false")
         createLowRightLeafButton("Launch", 405, LAUNCH, infoButtonsIn, infoButtonsOut, 0);
+    else if(el.attribute("qml") == "true")
+        createLowRightLeafButton("Display", 405, LAUNCH_QML, infoButtonsIn, infoButtonsOut, 0);
 }
 
 void MenuManager::createMenu(const QDomElement &category, BUTTON_TYPE type)
@@ -546,7 +634,7 @@ void MenuManager::createMenu(const QDomElement &category, BUTTON_TYPE type)
 
             // create normal menu button
             QString label = currentNode.toElement().attribute("name");
-            item = new TextButton(label, TextButton::LEFT, type, this->window->scene, 0);
+            item = new TextButton(label, TextButton::LEFT, type, this->window->scene, this->window->mainSceneRoot);
             currentNode = currentNode.nextSibling();
 
 #ifndef QT_OPENGL_SUPPORT
@@ -646,7 +734,7 @@ void MenuManager::createMenu(const QDomElement &category, BUTTON_TYPE type)
 void MenuManager::createLowLeftButton(const QString &label, BUTTON_TYPE type,
     Movie *movieIn, Movie *movieOut, Movie *movieShake, const QString &menuString)
 {
-    TextButton *button = new TextButton(label, TextButton::RIGHT, type, this->window->scene, 0, TextButton::PANEL);
+    TextButton *button = new TextButton(label, TextButton::RIGHT, type, this->window->scene, this->window->mainSceneRoot, TextButton::PANEL);
     if (!menuString.isNull())
         button->setMenuString(menuString);
     button->setRecursiveVisible(false);
@@ -688,7 +776,7 @@ void MenuManager::createLowLeftButton(const QString &label, BUTTON_TYPE type,
 
 void MenuManager::createLowRightButton(const QString &label, BUTTON_TYPE type, Movie *movieIn, Movie *movieOut, Movie * /*movieShake*/)
 {
-    TextButton *item = new TextButton(label, TextButton::RIGHT, type, this->window->scene, 0, TextButton::PANEL);
+    TextButton *item = new TextButton(label, TextButton::RIGHT, type, this->window->scene, this->window->mainSceneRoot, TextButton::PANEL);
     item->setRecursiveVisible(false);
     item->setZValue(10);
 
@@ -715,7 +803,7 @@ void MenuManager::createLowRightButton(const QString &label, BUTTON_TYPE type, M
 
 void MenuManager::createLowRightLeafButton(const QString &label, int xOffset, BUTTON_TYPE type, Movie *movieIn, Movie *movieOut, Movie * /*movieShake*/)
 {
-    TextButton *item = new TextButton(label, TextButton::RIGHT, type, this->window->scene, 0, TextButton::PANEL);
+    TextButton *item = new TextButton(label, TextButton::RIGHT, type, this->window->scene, this->window->mainSceneRoot, TextButton::PANEL);
     item->setRecursiveVisible(false);
     item->setZValue(10);
 
@@ -831,12 +919,12 @@ void MenuManager::createUpnDownButtons()
     float xOffset = 15.0f;
     float yOffset = 450.0f;
 
-    this->upButton = new TextButton("", TextButton::LEFT, MenuManager::UP, this->window->scene, 0, TextButton::UP);
+    this->upButton = new TextButton("", TextButton::LEFT, MenuManager::UP, this->window->scene, this->window->mainSceneRoot, TextButton::UP);
     this->upButton->prepare();
     this->upButton->setPos(xOffset, yOffset);
     this->upButton->setState(TextButton::DISABLED);
 
-    this->downButton = new TextButton("", TextButton::LEFT, MenuManager::DOWN, this->window->scene, 0, TextButton::DOWN);
+    this->downButton = new TextButton("", TextButton::LEFT, MenuManager::DOWN, this->window->scene, this->window->mainSceneRoot, TextButton::DOWN);
     this->downButton->prepare();
     this->downButton->setPos(xOffset + 10 + this->downButton->sceneBoundingRect().width(), yOffset);