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LibWeb: Add initial implementation of CRC2D.globalAlpha
Works for fills and strokes (using colors, gradients, or patterns), along with images. fill_rect() has been updated to use fill_path(), which allows it to easily transform the rect, and already supports opacity. Co-authored-by: MacDue <macdue@dueutil.tech>
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8 changed files with 150 additions and 39 deletions
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Userland/Libraries/LibWeb/HTML/Canvas/CanvasCompositing.h
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Userland/Libraries/LibWeb/HTML/Canvas/CanvasCompositing.h
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/*
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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 <LibWeb/HTML/ImageData.h>
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namespace Web::HTML {
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// https://html.spec.whatwg.org/multipage/canvas.html#canvascompositing
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class CanvasCompositing {
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public:
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virtual ~CanvasCompositing() = default;
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virtual float global_alpha() const = 0;
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virtual void set_global_alpha(float) = 0;
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protected:
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CanvasCompositing() = default;
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};
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}
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