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LibWeb: Let Paintable perform the painting

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This patch adds a bunch of Paintable subclasses, each corresponding to
the Layout::Node subclasses that had a paint() override. All painting
logic is moved from layout nodes into their corresponding paintables.

Paintables are now created by asking a Layout::Box to produce one:

    static NonnullOwnPtr<Paintable> Layout::Box::create_paintable()

Note that inline nodes still have their painting logic. Since they
are not boxes, and all paintables have a corresponding box, we'll need
to come up with some other solution for them.
This commit is contained in:
Andreas Kling 2022-03-10 14:02:25 +01:00
parent f6497b64ac
commit 02b316fd5c
64 changed files with 1307 additions and 602 deletions
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12
Userland/Libraries/LibWeb/Layout/Box.h
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@ -32,13 +32,6 @@ public:
bool is_body() const;
virtual void paint(PaintContext&, Painting::PaintPhase) override;
virtual void paint_border(PaintContext& context);
virtual void paint_box_shadow(PaintContext& context);
virtual void paint_background(PaintContext& context);
Painting::BorderRadiusData normalized_border_radius_data();
virtual Optional<float> intrinsic_width() const { return {}; }
virtual Optional<float> intrinsic_height() const { return {}; }
virtual Optional<float> intrinsic_aspect_ratio() const { return {}; }
@ -47,13 +40,12 @@ public:
bool has_intrinsic_height() const { return intrinsic_height().has_value(); }
bool has_intrinsic_aspect_ratio() const { return intrinsic_aspect_ratio().has_value(); }
virtual void before_children_paint(PaintContext&, Painting::PaintPhase) override;
virtual void after_children_paint(PaintContext&, Painting::PaintPhase) override;
virtual ~Box() override;
virtual void did_set_rect() { }
virtual OwnPtr<Painting::Paintable> create_paintable() const;
protected:
Box(DOM::Document&, DOM::Node*, NonnullRefPtr<CSS::StyleProperties>);
Box(DOM::Document&, DOM::Node*, CSS::ComputedValues);