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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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12
Libraries/LibHTML/Layout/LayoutBlock.h
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@ -38,3 +38,15 @@ private:
Vector<LineBox> m_line_boxes;
};
template<typename Callback>
void LayoutNode::for_each_fragment_of_this(Callback callback)
{
auto& block = *containing_block();
for (auto& line_box : block.line_boxes()) {
for (auto& fragment : line_box.fragments()) {
if (callback(fragment) == IterationDecision::Break)
return;
}
}
}