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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/RefCounted.h>
#include <LibGfx/AffineTransform.h>
#include <LibGfx/Color.h>
#include <LibGfx/Forward.h>
#include <LibGfx/Painter.h>
#include <LibGfx/Path.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/DOM/ExceptionOr.h>
namespace Web::HTML {
class CanvasRenderingContext2D
: public RefCounted<CanvasRenderingContext2D>
, public Bindings::Wrappable {
AK_MAKE_NONCOPYABLE(CanvasRenderingContext2D);
AK_MAKE_NONMOVABLE(CanvasRenderingContext2D);
public:
using WrapperType = Bindings::CanvasRenderingContext2DWrapper;
static NonnullRefPtr<CanvasRenderingContext2D> create(HTMLCanvasElement& element) { return adopt(*new CanvasRenderingContext2D(element)); }
~CanvasRenderingContext2D();
void set_fill_style(String);
String fill_style() const;
void set_stroke_style(String);
String stroke_style() const;
void fill_rect(float x, float y, float width, float height);
void stroke_rect(float x, float y, float width, float height);
void clear_rect(float x, float y, float width, float height);
void draw_image(const HTMLImageElement&, float x, float y);
void scale(float sx, float sy);
void translate(float x, float y);
void rotate(float degrees);
void set_line_width(float line_width) { m_line_width = line_width; }
float line_width() const { return m_line_width; }
void begin_path();
void close_path();
void move_to(float x, float y);
void line_to(float x, float y);
void quadratic_curve_to(float cx, float cy, float x, float y);
DOM::ExceptionOr<void> arc(float x, float y, float radius, float start_angle, float end_angle, bool counter_clockwise);
DOM::ExceptionOr<void> ellipse(float x, float y, float radius_x, float radius_y, float rotation, float start_angle, float end_angle, bool counter_clockwise);
void rect(float x, float y, float width, float height);
void stroke();
void fill_text(const String&, float x, float y, Optional<double> max_width);
// FIXME: We should only have one fill(), really. Fix the wrapper generator!
void fill(Gfx::Painter::WindingRule);
void fill(const String& fill_rule);
RefPtr<ImageData> create_image_data(int width, int height) const;
void put_image_data(const ImageData&, float x, float y);
HTMLCanvasElement* canvas() { return m_element; }
private:
explicit CanvasRenderingContext2D(HTMLCanvasElement&);
void did_draw(const Gfx::FloatRect&);
OwnPtr<Gfx::Painter> painter();
WeakPtr<HTMLCanvasElement> m_element;
Gfx::AffineTransform m_transform;
Gfx::Color m_fill_style;
Gfx::Color m_stroke_style;
float m_line_width { 1 };
Gfx::Path m_path;
};
}
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