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LibWeb+WebContent: Don't relayout page on every scroll event

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The WebContent process was redoing page layout every time you scrolled
the page. This was a huge CPU hog for no reason. Fix this by only doing
a relayout when the viewport is resized, not when it moves around.
This commit is contained in:
Andreas Kling 2021-02-09 22:40:16 +01:00
parent 964894dee6
commit f24b674d7a
3 changed files with 24 additions and 4 deletions
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5
Userland/Services/WebContent/PageHost.cpp
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@ -100,10 +100,7 @@ void PageHost::paint(const Gfx::IntRect& content_rect, Gfx::Bitmap& target)
void PageHost::set_viewport_rect(const Gfx::IntRect& rect)
{
page().main_frame().set_size(rect.size());
if (page().main_frame().document())
page().main_frame().document()->update_layout();
page().main_frame().set_viewport_scroll_offset(rect.location());
page().main_frame().set_viewport_rect(rect);
}
void PageHost::page_did_invalidate(const Gfx::IntRect& content_rect)