[Webkit-unassigned] [Bug 105608] [Qt] Outmost window's content size doesn't update when inner <object> frame is expanded

Tue Dec 25 22:29:23 PST 2012

https://bugs.webkit.org/show_bug.cgi?id=105608

--- Comment #2 from Chen Zhixiang <chenzx at cn.fujitsu.com>  2012-12-25 22:31:32 PST ---
During some debugging and watching,
I found that when a html contains child frames (using <object> to include),
And enable FrameFlatteningEnabled,
The outer FrameView does not get correct contentsSize.

Add log to Qt-4.8.4 demos/browser:

#include "qwebframe.h" 
void WebView::loadFinished() 
{ 
...

   QWebFrame* pMainFrame = m_page->mainFrame(); 
   int scrollBarVerticalMaximum = pMainFrame->scrollBarMaximum(Qt::Vertical); 
   qDebug()<<"scrollBarVerticalMaximum="<<scrollBarVerticalMaximum; 

   QSize contentsSize = pMainFrame->contentsSize(); 
   qDebug()<<"contentsSize="<<contentsSize; 
} 

Test cases:
bug.html:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><head>
<body>
<object type="text/html" data="a.html" border="0" height="100%" width="100%"></object>
</body></html>

a.html:

<body style="width:100%; height:2000px;">
a
</body>

（1）When directly accessing a.html using default Qt demos/browser:
scrollBarVerticalMaximum= 1717 
contentsSize= QSize(551, 2016) 

（2）When accessing bug.html：
ERROR: called FrameView::paint with nil renderer 
.\page\FrameView.cpp(2377) : WebCore::FrameView::paintContents 
scrollBarVerticalMaximum= 16 
contentsSize= QSize(543, 517)

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