1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 14:37:46 +00:00

LibWeb: Add barebones CanvasGradient object

Also add the CanvasRenderingContext2D APIs to go along with it.
Note that it can't be used for anything yet.
This commit is contained in:
Andreas Kling 2022-02-03 20:08:27 +01:00
parent 545ec334f0
commit dc3bf32307
10 changed files with 130 additions and 0 deletions

View file

@ -0,0 +1,53 @@
/*
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/HTML/CanvasGradient.h>
namespace Web::HTML {
NonnullRefPtr<CanvasGradient> CanvasGradient::create_radial(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 adopt_ref(*new CanvasGradient(Type::Radial));
}
NonnullRefPtr<CanvasGradient> CanvasGradient::create_linear(double x0, double y0, double x1, double y1)
{
(void)x0;
(void)y0;
(void)x1;
(void)y1;
return adopt_ref(*new CanvasGradient(Type::Linear));
}
NonnullRefPtr<CanvasGradient> CanvasGradient::create_conic(double start_angle, double x, double y)
{
(void)start_angle;
(void)x;
(void)y;
return adopt_ref(*new CanvasGradient(Type::Conic));
}
CanvasGradient::CanvasGradient(Type type)
: m_type(type)
{
}
CanvasGradient::~CanvasGradient()
{
}
void CanvasGradient::add_color_stop(double offset, String const& color)
{
dbgln("CanvasGradient#addColorStop({}, '{}')", offset, color);
}
}

View file

@ -0,0 +1,40 @@
/*
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefCounted.h>
#include <LibWeb/Bindings/Wrappable.h>
namespace Web::HTML {
class CanvasGradient final
: public RefCounted<CanvasGradient>
, public Bindings::Wrappable {
public:
using WrapperType = Bindings::CanvasGradientWrapper;
enum class Type {
Linear,
Radial,
Conic,
};
static NonnullRefPtr<CanvasGradient> create_radial(double x0, double y0, double r0, double x1, double y1, double r1);
static NonnullRefPtr<CanvasGradient> create_linear(double x0, double y0, double x1, double y1);
static NonnullRefPtr<CanvasGradient> create_conic(double start_angle, double x, double y);
void add_color_stop(double offset, String const& color);
~CanvasGradient();
private:
explicit CanvasGradient(Type);
Type m_type {};
};
}

View file

@ -0,0 +1,5 @@
[Exposed=(Window,Worker)]
interface CanvasGradient {
// opaque object
undefined addColorStop(double offset, DOMString color);
};

View file

@ -496,4 +496,19 @@ CanvasRenderingContext2D::PreparedText CanvasRenderingContext2D::prepare_text(St
return prepared_text;
}
NonnullRefPtr<CanvasGradient> CanvasRenderingContext2D::create_radial_gradient(double x0, double y0, double r0, double x1, double y1, double r1)
{
return CanvasGradient::create_radial(x0, y0, r0, x1, y1, r1);
}
NonnullRefPtr<CanvasGradient> CanvasRenderingContext2D::create_linear_gradient(double x0, double y0, double x1, double y1)
{
return CanvasGradient::create_linear(x0, y0, x1, y1);
}
NonnullRefPtr<CanvasGradient> CanvasRenderingContext2D::create_conic_gradient(double start_angle, double x, double y)
{
return CanvasGradient::create_conic(start_angle, x, y);
}
}

View file

@ -14,6 +14,7 @@
#include <LibGfx/Path.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/DOM/ExceptionOr.h>
#include <LibWeb/HTML/CanvasGradient.h>
#include <LibWeb/Layout/InlineNode.h>
#include <LibWeb/Layout/LineBox.h>
@ -83,6 +84,10 @@ public:
RefPtr<TextMetrics> measure_text(String const& text);
NonnullRefPtr<CanvasGradient> create_radial_gradient(double x0, double y0, double r0, double x1, double y1, double r1);
NonnullRefPtr<CanvasGradient> create_linear_gradient(double x0, double y0, double x1, double y1);
NonnullRefPtr<CanvasGradient> create_conic_gradient(double start_angle, double x, double y);
private:
explicit CanvasRenderingContext2D(HTMLCanvasElement&);

View file

@ -40,4 +40,9 @@ interface CanvasRenderingContext2D {
readonly attribute HTMLCanvasElement canvas;
TextMetrics measureText(DOMString text);
CanvasGradient createRadialGradient(double x0, double y0, double r0, double x1, double y1, double r1);
CanvasGradient createLinearGradient(double x0, double y0, double x1, double y1);
CanvasGradient createConicGradient(double startAngle, double x, double y);
};