mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-21 02:08:12 +03:00
77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/QuickSort.h>
|
|
#include <LibWeb/DOM/ExceptionOr.h>
|
|
#include <LibWeb/HTML/CanvasGradient.h>
|
|
#include <LibWeb/HTML/Window.h>
|
|
|
|
namespace Web::HTML {
|
|
|
|
JS::NonnullGCPtr<CanvasGradient> CanvasGradient::create_radial(HTML::Window& window, double x0, double y0, double r0, double x1, double y1, double r1)
|
|
{
|
|
(void)x0;
|
|
(void)y0;
|
|
(void)r0;
|
|
(void)x1;
|
|
(void)y1;
|
|
(void)r1;
|
|
return *window.heap().allocate<CanvasGradient>(window.realm(), window, Type::Radial);
|
|
}
|
|
|
|
JS::NonnullGCPtr<CanvasGradient> CanvasGradient::create_linear(HTML::Window& window, double x0, double y0, double x1, double y1)
|
|
{
|
|
(void)x0;
|
|
(void)y0;
|
|
(void)x1;
|
|
(void)y1;
|
|
return *window.heap().allocate<CanvasGradient>(window.realm(), window, Type::Linear);
|
|
}
|
|
|
|
JS::NonnullGCPtr<CanvasGradient> CanvasGradient::create_conic(HTML::Window& window, double start_angle, double x, double y)
|
|
{
|
|
(void)start_angle;
|
|
(void)x;
|
|
(void)y;
|
|
return *window.heap().allocate<CanvasGradient>(window.realm(), window, Type::Conic);
|
|
}
|
|
|
|
CanvasGradient::CanvasGradient(HTML::Window& window, Type type)
|
|
: PlatformObject(window.realm())
|
|
, m_type(type)
|
|
{
|
|
set_prototype(&window.cached_web_prototype("CanvasGradient"));
|
|
}
|
|
|
|
CanvasGradient::~CanvasGradient() = default;
|
|
|
|
// https://html.spec.whatwg.org/multipage/canvas.html#dom-canvasgradient-addcolorstop
|
|
DOM::ExceptionOr<void> CanvasGradient::add_color_stop(double offset, String const& color)
|
|
{
|
|
// 1. If the offset is less than 0 or greater than 1, then throw an "IndexSizeError" DOMException.
|
|
if (offset < 0 || offset > 1)
|
|
return DOM::IndexSizeError::create(global_object(), "CanvasGradient color stop offset out of bounds");
|
|
|
|
// 2. Let parsed color be the result of parsing color.
|
|
auto parsed_color = Color::from_string(color);
|
|
|
|
// 3. If parsed color is failure, throw a "SyntaxError" DOMException.
|
|
if (!parsed_color.has_value())
|
|
return DOM::SyntaxError::create(global_object(), "Could not parse color for CanvasGradient");
|
|
|
|
// 4. Place a new stop on the gradient, at offset offset relative to the whole gradient, and with the color parsed color.
|
|
m_color_stops.append(ColorStop { offset, parsed_color.value() });
|
|
|
|
// FIXME: If multiple stops are added at the same offset on a gradient, then they must be placed in the order added,
|
|
// with the first one closest to the start of the gradient, and each subsequent one infinitesimally further along
|
|
// towards the end point (in effect causing all but the first and last stop added at each point to be ignored).
|
|
quick_sort(m_color_stops, [](auto& a, auto& b) { return a.offset < b.offset; });
|
|
|
|
return {};
|
|
}
|
|
|
|
}
|