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LibWeb: Separate layout tree rendering into phases

CSS defines a very specific paint order. This patch starts steering us
towards respecting that by introducing the PaintPhase enum with values:

- Background
- Border
- Foreground
- Overlay (internal overlays used by inspector)

Basically, to get the right visual result, we have to render the page
multiple times, going one phase at a time.
This commit is contained in:
Andreas Kling 2020-06-18 18:57:35 +02:00
parent abe811104f
commit cfab53903f
22 changed files with 109 additions and 95 deletions

View file

@ -67,7 +67,7 @@ public:
void set_stacking_context(NonnullOwnPtr<StackingContext> context) { m_stacking_context = move(context); }
StackingContext* enclosing_stacking_context();
virtual void render(RenderingContext&) override;
virtual void render(RenderingContext&, PaintPhase) override;
protected:
LayoutBox(const Node* node, NonnullRefPtr<StyleProperties> style)