Bug 32933 – WebKit hang while snapshoting this page

• Status: UNCONFIRMED
• Component: Printing

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URL: http://blog.oup.com/2009/11/unfriend/ 
I try to capture the webpage after loading but it hangs and CPU runs to 100%. It works well for most other pages.

This is my codes in QtWebKit(r50477 + Qt4.6.0 + GCC4.4.0).

    // set the viewport size to the whole webpage size
    m_webview->page()->setViewportSize ( tmpSize );  
    //disable scrollbar
    m_webview->page()->mainFrame()->setScrollBarPolicy(Qt::Horizontal,Qt::ScrollBarAlwaysOff); 
    m_webview->page()->mainFrame()->setScrollBarPolicy(Qt::Vertical,Qt::ScrollBarAlwaysOff); 
    //paint webpage into image
    QImage im ( tmpSize , QImage::Format_RGB888); //QImage::Format_RGB32
    QPainter painter ( & im );
    m_webview->page()->mainFrame()->render ( & painter ); 

The tree i have tracked:
.....QWebFramePrivate::renderPrivate(QPainter *painter, QWebFrame::RenderLayer layer, const QRegion &clip)           
...........WebCore::FrameView::paintContents(GraphicsContext* p, const IntRect& rect)
................contentRenderer->layer()->paint(p, rect, m_paintRestriction, eltRenderer); //void RenderLayer::paint
......................void RenderLayer::paintLayer(....)
...........................void RenderBlock::paint(PaintInfo& paintInfo, int tx, int ty)
...............................void RenderBlock::paintObject(PaintInfo& paintInfo, int tx, int ty)
....................................paintBoxDecorations(paintInfo, tx, ty);  //hang here now....

I am not familiar with the WebKit rendering codes. It is too hard for me now. Please help to fix this bug. Thanks.

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Safari 4.0.4 for Win hangs(or load OK but hangs while refreshing) while loading this page. Arora 0.10.0 and Chrome 4.0.0249.30 finish loading soon.

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Sorry, it seems a bug of Qt 4.6. Program hangs on QPainter::fillRect while invoking GraphicsContext::fillRect(FloatRect(0, 0, 1019, 44364), Color(-1)));

Any one can help to report this bug to Qt community? Thanks.