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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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3
Libraries/LibHTML/Layout/LayoutBlock.cpp
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@ -194,6 +194,9 @@ void LayoutBlock::compute_height()
void LayoutBlock::render(RenderingContext& context)
{
if (!is_visible())
return;
LayoutNode::render(context);
// FIXME: position this properly