97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
/*
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* Copyright (c) 2026, Callum Law <callumlaw1709@outlook.com>
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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/Bindings/CanvasRenderingContext2D.h>
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#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
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#include <LibWeb/HTML/CanvasGradient.h>
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#include <LibWeb/HTML/CanvasPattern.h>
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namespace Web::HTML {
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using FillOrStrokeVariant = Variant<Gfx::Color, GC::Ref<CanvasGradient>, GC::Ref<CanvasPattern>>;
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struct FillOrStrokeStyle {
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FillOrStrokeStyle(Gfx::Color color)
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: m_fill_or_stroke_style(color)
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{
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}
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FillOrStrokeStyle(GC::Ref<CanvasGradient> gradient)
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: m_fill_or_stroke_style(gradient)
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{
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}
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FillOrStrokeStyle(GC::Ref<CanvasPattern> pattern)
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: m_fill_or_stroke_style(pattern)
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{
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}
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NonnullRefPtr<Gfx::PaintStyle> to_gfx_paint_style();
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Optional<Gfx::Color> as_color() const;
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Gfx::Color to_color_but_fixme_should_accept_any_paint_style() const;
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using JsFillOrStrokeStyle = Variant<String, GC::Ref<CanvasGradient>, GC::Ref<CanvasPattern>>;
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JsFillOrStrokeStyle to_js_fill_or_stroke_style() const
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{
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return m_fill_or_stroke_style.visit(
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[&](Gfx::Color color) -> JsFillOrStrokeStyle {
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return color.to_string(Gfx::Color::HTMLCompatibleSerialization::Yes);
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},
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[&](auto handle) -> JsFillOrStrokeStyle {
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return handle;
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});
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}
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void visit_edges(GC::Cell::Visitor& visitor)
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{
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visitor.visit(m_fill_or_stroke_style);
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}
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private:
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FillOrStrokeVariant m_fill_or_stroke_style;
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RefPtr<Gfx::PaintStyle> m_color_paint_style { nullptr };
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};
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// https://html.spec.whatwg.org/multipage/canvas.html#drawing-state
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struct DrawingState {
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Gfx::AffineTransform transform;
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FillOrStrokeStyle fill_style { Gfx::Color::Black };
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FillOrStrokeStyle stroke_style { Gfx::Color::Black };
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float shadow_offset_x { 0.0f };
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float shadow_offset_y { 0.0f };
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float shadow_blur { 0.0f };
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Gfx::Color shadow_color { Gfx::Color::Transparent };
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Optional<Gfx::Filter> filter;
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Optional<String> filter_string;
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float line_width { 1 };
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Bindings::CanvasLineCap line_cap { Bindings::CanvasLineCap::Butt };
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Bindings::CanvasLineJoin line_join { Bindings::CanvasLineJoin::Miter };
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float miter_limit { 10 };
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Vector<double> dash_list;
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float line_dash_offset { 0 };
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bool image_smoothing_enabled { true };
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Bindings::ImageSmoothingQuality image_smoothing_quality { Bindings::ImageSmoothingQuality::Low };
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float global_alpha = { 1 };
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Gfx::CompositingAndBlendingOperator current_compositing_and_blending_operator = Gfx::CompositingAndBlendingOperator::SourceOver;
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RefPtr<CSS::StyleValue const> font_style_value { nullptr };
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RefPtr<Gfx::FontCascadeList const> current_font_cascade_list { nullptr };
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Bindings::CanvasTextAlign text_align { Bindings::CanvasTextAlign::Start };
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Bindings::CanvasTextBaseline text_baseline { Bindings::CanvasTextBaseline::Alphabetic };
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Bindings::CanvasDirection direction { Bindings::CanvasDirection::Inherit };
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NonnullRefPtr<CSS::StyleValue const> letter_spacing { CSS::LengthStyleValue::create(CSS::Length::make_px(0)) };
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void visit_edges(GC::Cell::Visitor& visitor)
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{
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fill_style.visit_edges(visitor);
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stroke_style.visit_edges(visitor);
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}
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};
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}
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