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LibHTML: Implement the <blink> element

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Just in time for Serenity's 1st birthday, here is the <blink> element!

This patch adds a bunch of different mechanisms to enable partial
repaints of the layout tree (LayoutNode::set_needs_display()))
It also adds LayoutNode::is_visible(), which can be toggled to prevent
a LayoutNode from rendering anything (it still takes up space though.)
This commit is contained in:
Andreas Kling 2019-10-09 21:25:29 +02:00
parent 33043941f9
commit fdbad6284c
16 changed files with 140 additions and 0 deletions
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7
Libraries/LibHTML/Frame.cpp
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@ -29,3 +29,10 @@ void Frame::set_size(const Size& size)
return;
m_size = size;
}
void Frame::set_needs_display(const Rect& rect)
{
if (!on_set_needs_display)
return;
on_set_needs_display(rect);
}