91 lines
3.5 KiB
C++
91 lines
3.5 KiB
C++
/*
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* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2022, Sam Atkins <atkinssj@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 <AK/String.h>
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#include <LibWeb/HTML/Canvas/CanvasState.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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// https://html.spec.whatwg.org/multipage/canvas.html#canvasfillstrokestyles
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template<typename IncludingClass>
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class CanvasFillStrokeStyles {
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public:
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~CanvasFillStrokeStyles() = default;
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using FillOrStrokeStyleVariant = Variant<String, JS::Handle<CanvasGradient>, JS::Handle<CanvasPattern>>;
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static CanvasState::FillOrStrokeStyle to_canvas_state_fill_or_stroke_style(auto const& style)
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{
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return style.visit(
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[&](String const& string) -> CanvasState::FillOrStrokeStyle {
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return Gfx::Color::from_string(string).value_or(Color::Black);
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},
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[&](auto fill_or_stroke_style) -> CanvasState::FillOrStrokeStyle {
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return fill_or_stroke_style;
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});
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}
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void set_fill_style(FillOrStrokeStyleVariant style)
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{
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// FIXME: 2. If the given value is a CanvasPattern object that is marked as not origin-clean, then set this's origin-clean flag to false.
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my_drawing_state().fill_style = to_canvas_state_fill_or_stroke_style(style);
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}
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FillOrStrokeStyleVariant fill_style() const
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{
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return my_drawing_state().fill_style.to_js_fill_or_stroke_style();
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}
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void set_stroke_style(FillOrStrokeStyleVariant style)
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{
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// FIXME: 2. If the given value is a CanvasPattern object that is marked as not origin-clean, then set this's origin-clean flag to false.
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my_drawing_state().stroke_style = to_canvas_state_fill_or_stroke_style(style);
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}
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FillOrStrokeStyleVariant stroke_style() const
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{
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return my_drawing_state().stroke_style.to_js_fill_or_stroke_style();
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}
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WebIDL::ExceptionOr<JS::NonnullGCPtr<CanvasGradient>> create_radial_gradient(double x0, double y0, double r0, double x1, double y1, double r1)
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{
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auto& realm = static_cast<IncludingClass&>(*this).realm();
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return CanvasGradient::create_radial(realm, x0, y0, r0, x1, y1, r1);
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}
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JS::NonnullGCPtr<CanvasGradient> create_linear_gradient(double x0, double y0, double x1, double y1)
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{
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auto& realm = static_cast<IncludingClass&>(*this).realm();
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return CanvasGradient::create_linear(realm, x0, y0, x1, y1).release_value_but_fixme_should_propagate_errors();
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}
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JS::NonnullGCPtr<CanvasGradient> create_conic_gradient(double start_angle, double x, double y)
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{
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auto& realm = static_cast<IncludingClass&>(*this).realm();
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return CanvasGradient::create_conic(realm, start_angle, x, y).release_value_but_fixme_should_propagate_errors();
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}
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WebIDL::ExceptionOr<JS::GCPtr<CanvasPattern>> create_pattern(CanvasImageSource const& image, StringView repetition)
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{
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auto& realm = static_cast<IncludingClass&>(*this).realm();
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return CanvasPattern::create(realm, image, repetition);
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}
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protected:
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CanvasFillStrokeStyles() = default;
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private:
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CanvasState::DrawingState& my_drawing_state() { return reinterpret_cast<IncludingClass&>(*this).drawing_state(); }
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CanvasState::DrawingState const& my_drawing_state() const { return reinterpret_cast<IncludingClass const&>(*this).drawing_state(); }
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};
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}
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