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https://github.com/RGBCube/serenity
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dc9cb449b1
This removes the awkward hack to recompute the layout transform at paint time, and makes it possible for path sizes to be computed during layout. For example, it's possible to use relative units in SVG shapes (e.g. <rect>), which can be resolved during layout, but would be hard to resolve again during painting.
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWeb/Layout/SVGGeometryBox.h>
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#include <LibWeb/Painting/SVGGraphicsPaintable.h>
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namespace Web::Painting {
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class SVGGeometryPaintable final : public SVGGraphicsPaintable {
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JS_CELL(SVGGeometryPaintable, SVGGraphicsPaintable);
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public:
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class PathData {
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public:
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PathData(Gfx::Path path, Gfx::AffineTransform svg_to_viewbox_transform, Gfx::AffineTransform svg_transform)
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: m_computed_path(move(path))
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, m_svg_to_viewbox_transform(svg_to_viewbox_transform)
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, m_svg_transform(svg_transform)
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{
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}
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Gfx::Path const& computed_path() const { return m_computed_path; }
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Gfx::AffineTransform const& svg_to_viewbox_transform() const { return m_svg_to_viewbox_transform; }
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Gfx::AffineTransform const& svg_transform() const { return m_svg_transform; }
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Gfx::AffineTransform svg_to_css_pixels_transform(
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Optional<Gfx::AffineTransform const&> additional_svg_transform = {}) const
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{
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return Gfx::AffineTransform {}.multiply(svg_to_viewbox_transform()).multiply(additional_svg_transform.value_or(Gfx::AffineTransform {})).multiply(svg_transform());
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}
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Gfx::AffineTransform svg_to_device_pixels_transform(
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PaintContext const& context,
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Gfx::AffineTransform const& additional_svg_transform) const
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{
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auto css_scale = context.device_pixels_per_css_pixel();
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return Gfx::AffineTransform {}.scale({ css_scale, css_scale }).multiply(svg_to_css_pixels_transform(additional_svg_transform));
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}
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private:
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Gfx::Path m_computed_path;
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Gfx::AffineTransform m_svg_to_viewbox_transform;
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Gfx::AffineTransform m_svg_transform;
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};
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static JS::NonnullGCPtr<SVGGeometryPaintable> create(Layout::SVGGeometryBox const&);
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virtual Optional<HitTestResult> hit_test(CSSPixelPoint, HitTestType) const override;
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virtual void paint(PaintContext&, PaintPhase) const override;
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Layout::SVGGeometryBox const& layout_box() const;
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void set_path_data(PathData path_data)
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{
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m_path_data = move(path_data);
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}
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Optional<PathData> const& path_data() const { return m_path_data; }
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protected:
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SVGGeometryPaintable(Layout::SVGGeometryBox const&);
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Optional<PathData> m_path_data = {};
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};
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}
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