[vlc] vlc and qgraphicsitem

Fri Jun 10 08:50:12 CEST 2011

In the code below I tried to implement a VLC player with PyQt.
Unfortunately the video will not displayed (ton is available)
If I use the QGraphicsview as parent for the frame widget, the proxy widget can not embedded in the graphicsscene, but will be shown correctly.

Does anybody have an idea to solve this issue?

best regards,
Christian

#!/usr/bin/env python

import sys

from PyQt4.QtCore import QDir, QStringList, Qt
from PyQt4.QtGui import QApplication, QGraphicsScene, QGraphicsProxyWidget, QGraphicsView, QPainter, QPixmap, QGraphicsView, QBrush, QPalette, QFrame
from PyQt4.QtOpenGL import QGLWidget
from PyQt4.QtWebKit import QWebView
from PyQt4.phonon import Phonon
import vlc,os
import qrc_resources # compiled videowall.qrc by pyrcc4

APPNAME = 'Embedded QWebView and VideoWidget (Video Background)'
VIDEOFILE = '/media/test//Audio-Video/baguetteboden.mpg'
HTMLCODE = u"""
<html>
<head><style type="text/css"><!--
body {
    background-color: transparent;
    color:red;
}
--></style></head>
<body>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
Test Test sdfsdfsdfsdfsdaf df sdfsdfskdfjslkjf sfk sfsdflkflf fslf <br/>
</body>
</html>
"""

def main():

    app = QApplication(sys.argv)
    app.setApplicationName(APPNAME)
    scene = QGraphicsScene()

    view = QGraphicsView()

    ### VideoWidget
    ###############
    frame = QFrame()
#    frame = QFrame(view)
#    frame.setAttribute(Qt.WA_NativeWindow)
    video = QFrame(frame)
    video.resize(400,300)
    video.show()
    movieName = os.path.normcase(VIDEOFILE)
    instance=vlc.Instance()
    player=instance.media_player_new()
    vlcMedia = instance.media_new_path(movieName)
    player.set_media(vlcMedia)
    vlcMedia.parse()

    proxy_video = scene.addWidget(frame)
    proxy_video.setObjectName('proxy_video')    
    frame.resize(video.size())
#    proxy_video.resize(600, 480)
    proxy_video.show()

    #hwnd = int(video.winId())
#    print int(proxy_video.widget().winId())
    hwnd = int(frame.winId())
    # the media player has to be 'connected' to the QFrame
    # (otherwise a video would be displayed in it's own window)
    # this is platform specific!
    # you have to give the id of the QFrame (or similar object) to
    # vlc, different platforms have different functions for this
    if sys.platform == "linux2": # for Linux using the X Server
        player.set_xwindow(hwnd)
    elif sys.platform == "win32": # for Windows
        player.set_hwnd(hwnd)
    elif sys.platform == "darwin": # for MacOS
        player.set_agl(hwnd)

    player.play()  
    proxy_video.setZValue(5.0)

    ### WebView
    ###########

    webview = QWebView()

    # ensure transparent background

    palette = webview.palette()
    palette.setBrush(QPalette.Base, Qt.transparent)
    webview.page().setPalette(palette)
    #webview.setAttribute(Qt.WA_OpaquePaintEvent, False)
    webview.setAttribute(Qt.WA_OpaquePaintEvent, True)
    #webview.setAttribute(Qt.WA_NoSystemBackground, True)

    proxy_web = QGraphicsProxyWidget()
    proxy_web.setObjectName('proxy_web')
    proxy_web.setWidget(webview)
    proxy_web.show()
    scene.addItem(proxy_web)

    webview.setHtml(HTMLCODE)
    proxy_web.setZValue(10.0)
    ### Other stuff
    ###############

    scene.setSceneRect(scene.itemsBoundingRect())

    view.setScene(scene)

    for item in scene.items():
        print item.objectName(), item.zValue()

    # OpenGL rendering enabled.
    # OpenGL will speed up rendering and
    # decreases CPU utilization
    #view.setViewport(QGLWidget())

    view.setRenderHints(QPainter.Antialiasing | QPainter.SmoothPixmapTransform)
    view.setBackgroundBrush(QBrush(QPixmap(":/background.jpg")))
    view.setCacheMode(QGraphicsView.CacheBackground)
    view.setViewportUpdateMode(QGraphicsView.BoundingRectViewportUpdate)
    view.show()
    view.setWindowTitle(APPNAME)

    app.exec_()

if __name__ == '__main__':
    main()

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