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LibWeb: Add fast_is<T> optimization for more paintables

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We were doing a lot of dynamic_cast with these types, so let's avoid it.
This commit is contained in:
Andreas Kling 2025-09-21 14:14:39 +02:00 committed by Andreas Kling
parent 4eca3781c7
commit 84bedebb09
4 changed files with 20 additions and 0 deletions
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3
Libraries/LibWeb/Painting/Paintable.h
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@ -118,10 +118,13 @@ public:
bool fast_is() const = delete;
[[nodiscard]] virtual bool is_navigable_container_viewport_paintable() const { return false; }
[[nodiscard]] virtual bool is_viewport_paintable() const { return false; }
[[nodiscard]] virtual bool is_paintable_box() const { return false; }
[[nodiscard]] virtual bool is_paintable_with_lines() const { return false; }
[[nodiscard]] virtual bool is_svg_paintable() const { return false; }
[[nodiscard]] virtual bool is_svg_svg_paintable() const { return false; }
[[nodiscard]] virtual bool is_svg_path_paintable() const { return false; }
[[nodiscard]] virtual bool is_svg_graphics_paintable() const { return false; }
[[nodiscard]] virtual bool is_text_paintable() const { return false; }
DOM::Document const& document() const;

6
Libraries/LibWeb/Painting/SVGGraphicsPaintable.h
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@ -71,6 +71,12 @@ protected:
SVGGraphicsPaintable(Layout::SVGGraphicsBox const&);
ComputedTransforms m_computed_transforms;
private:
virtual bool is_svg_graphics_paintable() const final { return true; }
};
template<>
inline bool Paintable::fast_is<SVGGraphicsPaintable>() const { return is_svg_graphics_paintable(); }
}

6
Libraries/LibWeb/Painting/SVGPathPaintable.h
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@ -37,6 +37,12 @@ protected:
SVGPathPaintable(Layout::SVGGraphicsBox const&);
Optional<Gfx::Path> m_computed_path = {};
private:
virtual bool is_svg_path_paintable() const final { return true; }
};
template<>
inline bool Paintable::fast_is<SVGPathPaintable>() const { return is_svg_path_paintable(); }
}

5
Libraries/LibWeb/Painting/ViewportPaintable.h
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@ -45,6 +45,8 @@ public:
ReadonlySpan<GC::Ref<PaintableBox>> paintable_boxes_with_auto_content_visibility() const { return m_paintable_boxes_with_auto_content_visibility; }
private:
virtual bool is_viewport_paintable() const override { return true; }
void build_stacking_context_tree();
explicit ViewportPaintable(Layout::Viewport const&);
@ -57,4 +59,7 @@ private:
Vector<GC::Ref<PaintableBox>> m_paintable_boxes_with_auto_content_visibility;
};
template<>
inline bool Paintable::fast_is<ViewportPaintable>() const { return is_viewport_paintable(); }
}