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https://github.com/LadybirdBrowser/ladybird
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fd44da6829
Previously, the LibWeb bindings generator would output multiple per interface files like Prototype/Constructor/Namespace/GlobalMixin depending on the contents of that IDL file. This complicates the build system as it means that it does not know what files will be generated without knowledge of the contents of that IDL file. Instead, for each IDL file only generate a single Bindings/<IDLFile>.h and Bindings/<IDLFile>.cpp.
89 lines
4.0 KiB
C++
89 lines
4.0 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <andreas@ladybird.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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#include <AK/QuickSort.h>
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#include <LibWeb/Bindings/CanvasGradient.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/CSS/PropertyID.h>
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#include <LibWeb/HTML/CanvasGradient.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::HTML {
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GC_DEFINE_ALLOCATOR(CanvasGradient);
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// https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-createradialgradient
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WebIDL::ExceptionOr<GC::Ref<CanvasGradient>> CanvasGradient::create_radial(JS::Realm& realm, double x0, double y0, double r0, double x1, double y1, double r1)
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{
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// If either of r0 or r1 are negative, then an "IndexSizeError" DOMException must be thrown.
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if (r0 < 0)
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return WebIDL::IndexSizeError::create(realm, "The r0 passed is less than 0"_utf16);
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if (r1 < 0)
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return WebIDL::IndexSizeError::create(realm, "The r1 passed is less than 0"_utf16);
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auto radial_gradient = TRY_OR_THROW_OOM(realm.vm(), Gfx::CanvasRadialGradientPaintStyle::create(Gfx::FloatPoint { x0, y0 }, r0, Gfx::FloatPoint { x1, y1 }, r1));
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return realm.create<CanvasGradient>(realm, *radial_gradient);
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}
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// https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-createlineargradient
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WebIDL::ExceptionOr<GC::Ref<CanvasGradient>> CanvasGradient::create_linear(JS::Realm& realm, double x0, double y0, double x1, double y1)
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{
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auto linear_gradient = TRY_OR_THROW_OOM(realm.vm(), Gfx::CanvasLinearGradientPaintStyle::create(Gfx::FloatPoint { x0, y0 }, Gfx::FloatPoint { x1, y1 }));
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return realm.create<CanvasGradient>(realm, *linear_gradient);
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}
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// https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-createconicgradient
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WebIDL::ExceptionOr<GC::Ref<CanvasGradient>> CanvasGradient::create_conic(JS::Realm& realm, double start_angle, double x, double y)
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{
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auto conic_gradient = TRY_OR_THROW_OOM(realm.vm(), Gfx::CanvasConicGradientPaintStyle::create(Gfx::FloatPoint { x, y }, start_angle));
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return realm.create<CanvasGradient>(realm, *conic_gradient);
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}
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CanvasGradient::CanvasGradient(JS::Realm& realm, Gfx::GradientPaintStyle& gradient)
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: PlatformObject(realm)
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, m_gradient(gradient)
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{
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}
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CanvasGradient::~CanvasGradient() = default;
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void CanvasGradient::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(CanvasGradient);
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Base::initialize(realm);
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}
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// https://html.spec.whatwg.org/multipage/canvas.html#dom-canvasgradient-addcolorstop
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WebIDL::ExceptionOr<void> CanvasGradient::add_color_stop(double offset, StringView color)
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{
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// 1. If the offset is less than 0 or greater than 1, then throw an "IndexSizeError" DOMException.
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if (offset < 0 || offset > 1)
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return WebIDL::IndexSizeError::create(realm(), "CanvasGradient color stop offset out of bounds"_utf16);
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// 2. Let parsed color be the result of parsing color.
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// https://drafts.csswg.org/css-color/#parse-a-css-color-value
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auto const maybe_color = parse_css_value(CSS::Parser::ParsingParams { CSS::Parser::SpecialContext::CanvasContextGenericValue }, color, CSS::PropertyID::Color);
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// 3. If parsed color is failure, throw a "SyntaxError" DOMException.
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if (maybe_color.is_null() || !maybe_color->has_color())
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return WebIDL::SyntaxError::create(realm(), "Could not parse color for CanvasGradient"_utf16);
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auto const parsed_color = maybe_color->to_color({}).value();
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// 4. Place a new stop on the gradient, at offset offset relative to the whole gradient, and with the color parsed color.
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TRY_OR_THROW_OOM(realm().vm(), m_gradient->add_color_stop(offset, parsed_color));
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// FIXME: If multiple stops are added at the same offset on a gradient, then they must be placed in the order added,
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// with the first one closest to the start of the gradient, and each subsequent one infinitesimally further along
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// towards the end point (in effect causing all but the first and last stop added at each point to be ignored).
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return {};
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}
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}
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