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LibWeb: Resolve and paint simple SVG masks

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This allows applying SVG <mask>s to elements. It is only implemented for
the simplest (and default) case:

	- mask-type = luminance
 	- maskContentUnits = maskContentUnits
 	- maskUnits = objectBoundingBox
	- Default masking area

It should be possible to extend to cover more cases. Though the layout
for maskContentUnits = objectBoundingBox will be tricky to figure out.
This commit is contained in:
MacDue 2023-09-10 14:10:55 +01:00 • committed by Andreas Kling
parent 650180811e
commit 909bcfe9a4
12 changed files with 123 additions and 17 deletions
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3
Userland/Libraries/LibWeb/Painting/PaintableBox.h
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@ -27,6 +27,9 @@ public:
[[nodiscard]] bool is_visible() const;
virtual Optional<CSSPixelRect> get_masking_area() const { return {}; }
virtual void apply_mask(PaintContext&, Gfx::Bitmap&, CSSPixelRect const&) const {};
Layout::Box& layout_box() { return static_cast<Layout::Box&>(Paintable::layout_node()); }
Layout::Box const& layout_box() const { return static_cast<Layout::Box const&>(Paintable::layout_node()); }