[Webkit-unassigned] [Bug 24157] New: Flash content not visible if QWebView is inside QGraphicsView

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=24157

           Summary: Flash content not visible if QWebView is inside
                    QGraphicsView
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: lasse.holmstedt at gmail.com


When loading Flash content in a QWebView which is added inside QGraphicsView,
the Flash content is not visible at all. It works, however, because JavaScript
calls to the Flash object get through to it. 

If QWebView is added under some other container, like QMainWindow, Flash works 
just fine and everything is displayed. JavaScript works too as expected. 

The build used to test the problem was 41149, but it occurs with the build
currently shipping with Qt 4.5.0-tp1 as well.

On the Flash side, following steps are required:
* ExternalInterface.addCallback("funcnameForJs", asFuncName);

On JS side, the script has to first wait for the Flash to be 100% initialized.
After that, the call 

document.getElementById(flashElementName).funcnameForJs() 

can be made. This will show that the Flash itself does, in fact, work, it's
just not visible. There must be other, easier ways to do it too though.

This example does NOT work as expected, and shows the real issue:

MainWindow::MainWindow(QWidget *parent)
   : QMainWindow(parent), ui(new Ui::MainWindowClass), editorObj(this)
{
   ui->setupUi(this);

   QString projpath("/your/path/here");

   QGraphicsView* graphicsView = new QGraphicsView(this);

   QGraphicsScene* scenePtr = new QGraphicsScene(graphicsView);
   webview = new QWebView();
   graphicsView->setScene(scenePtr);

   scenePtr->addWidget(webview);
   graphicsView->resize(800, 800);
   graphicsView->move(300, 50);

   webview->settings()->setAttribute(QWebSettings::PluginsEnabled, true);
   webview->settings()->setAttribute(QWebSettings::DeveloperExtrasEnabled,
true);
   webview->settings()->setAttribute(QWebSettings::JavascriptEnabled, true);
   webview->load(QUrl("file://" + projpath +
"/someFlashAndJSEnabledFile.html"));
   webview->resize(600, 400);
   webview->show();

   QWidget* centralWidgetPtr = &editorObj;

   this->setCentralWidget(centralWidgetPtr);
}

As for Qt, one can for example do this working setup in a class that inherits
QMainWindow:

MainWindow::MainWindow(QWidget *parent)
   : QMainWindow(parent), ui(new Ui::MainWindowClass)
{
   ui->setupUi(this);

   QString projpath("/your/path/here");

   webview = new QWebView(this);
   webview->settings()->setAttribute(QWebSettings::PluginsEnabled, true);
   webview->settings()->setAttribute(QWebSettings::DeveloperExtrasEnabled,
true);
   webview->settings()->setAttribute(QWebSettings::JavascriptEnabled, true);

   webview->load(QUrl("file://" + projpath +
"/someFlashAndJSEnabledFile.html"));

   webview->resize(600, 400);
   webview->show();

}


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