webkit paint html 调用栈

1,同所有浏览器一样，webkit也是在render 完毕以后，发送paint 消息给view，由view画出所有内容

2，在WebCore::Font::drawGlyphs设置断点，调用栈如下

#0  WebCore::Font::drawGlyphs

#1  0x4115c088 in WebCore::Font::drawGlyphBuffer

#2  0x4115bea9 in WebCore::Font::drawSimpleText

#3  0x4115c10d in WebCore::Font::drawText

#4  0x4105db97 in WebCore::GraphicsContext::drawText

#5  0x410a004a in WebCore::InlineTextBox::paint

#6  0x4109ca59 in WebCore::InlineFlowBox::paint

#7  0x41142f44 in WebCore::RootInlineBox::paint

#8  0x410d624a in WebCore::RenderFlow::paintLines

#9  0x410aa685 in WebCore::RenderBlock::paintContents 

#10 0x410aad3d in WebCore::RenderBlock::paintObject

#11 0x410aa0ed in WebCore::RenderBlock::paint

#12 0x410aa8c2 in WebCore::RenderBlock::paintChildren

#13 0x410aa6a7 in WebCore::RenderBlock::paintContents

#14 0x410aad3d in WebCore::RenderBlock::paintObject

#15 0x410aa0ed in WebCore::RenderBlock::paint

#16 0x410aa8c2 in WebCore::RenderBlock::paintChildren

#17 0x410aa6a7 in WebCore::RenderBlock::paintContents  //开始递归paint

#18 0x410aad3d in WebCore::RenderBlock::paintObject

#19 0x410aa0ed in WebCore::RenderBlock::paint

#20 0x410e748c in WebCore::RenderLayer::paintLayer

#21 0x410e7687 in WebCore::RenderLayer::paintLayer

#22 0x410e6ea8 in WebCore::RenderLayer::paint

#23 0x41027307 in WebCore::Frame::paint

#24 0x411963e7 in QWebFrame::viewportPaintEvent

#25 0x40319f67 in QScrollView::eventFilter ()