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LibWeb: Implement the canvas gradients
This gets: - CanvasRenderingContext2D.createLinearGradient() - CanvasRenderingContext2D.createConicGradient() - CanvasRenderingContext2D.createRadialGradient() Actually working as fill styles for paths and rectangles :^) Getting them working for strokes is left as an exercise is left as an exercise for the reader.
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4 changed files with 26 additions and 38 deletions
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@ -1,12 +1,13 @@
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/*
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2023, MacDue <macdue@dueutil.tech>
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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 <LibGfx/Color.h>
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#include <LibGfx/PaintStyle.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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namespace Web::HTML {
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@ -15,12 +16,6 @@ class CanvasGradient final : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(CanvasGradient, Bindings::PlatformObject);
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public:
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enum class Type {
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Linear,
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Radial,
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Conic,
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};
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static JS::NonnullGCPtr<CanvasGradient> create_radial(JS::Realm&, double x0, double y0, double r0, double x1, double y1, double r1);
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static JS::NonnullGCPtr<CanvasGradient> create_linear(JS::Realm&, double x0, double y0, double x1, double y1);
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static JS::NonnullGCPtr<CanvasGradient> create_conic(JS::Realm&, double start_angle, double x, double y);
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@ -29,19 +24,14 @@ public:
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~CanvasGradient();
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NonnullRefPtr<Gfx::PaintStyle> to_gfx_paint_style() { return m_gradient; }
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private:
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CanvasGradient(JS::Realm&, Type);
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CanvasGradient(JS::Realm&, Gfx::GradientPaintStyle& gradient);
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virtual void initialize(JS::Realm&) override;
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Type m_type {};
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struct ColorStop {
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double offset { 0 };
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Gfx::Color color;
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};
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Vector<ColorStop> m_color_stops;
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NonnullRefPtr<Gfx::GradientPaintStyle> m_gradient;
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};
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}
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