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LibWeb: Make tiled backgrounds scroll with content

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Previously the page background was always draw relative to the viewport
instead of following with the content. This should eventually become
an opt-in mode (via CSS "background-attachment") but for now let's have
the default behavior be that backgrounds scroll with content.

Also take this opportunity to move the background painting code from
the two web views to a shared location in InitialContainingBlockBox.
This commit is contained in:
Andreas Kling 2021-03-07 13:46:20 +01:00
parent 6c087480cf
commit 7f9f916470
4 changed files with 21 additions and 15 deletions
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2
Userland/Libraries/LibWeb/Layout/InitialContainingBlockBox.h
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@ -41,6 +41,8 @@ public:
void paint_all_phases(PaintContext&);
virtual void paint(PaintContext&, PaintPhase) override;
void paint_document_background(PaintContext&);
virtual HitTestResult hit_test(const Gfx::IntPoint&, HitTestType) const override;
const LayoutRange& selection() const { return m_selection; }