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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/LayoutImage.cpp
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@ -34,6 +34,9 @@ void LayoutImage::layout()
void LayoutImage::render(RenderingContext& context)
{
if (!is_visible())
return;
if (renders_as_alt_text()) {
context.painter().set_font(Font::default_font());
StylePainter::paint_frame(context.painter(), rect(), FrameShape::Container, FrameShadow::Sunken, 2);