348e209eb5
This matches what we already do for the layout tree and things are expected to work this way regardless.
129 lines
4 KiB
C++
129 lines
4 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/OwnPtr.h>
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#include <LibGfx/Painter.h>
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#include <LibWeb/DOM/CanvasRenderingContext2D.h>
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#include <LibWeb/DOM/HTMLCanvasElement.h>
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namespace Web {
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CanvasRenderingContext2D::CanvasRenderingContext2D(HTMLCanvasElement& element)
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: m_element(element.make_weak_ptr())
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{
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}
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CanvasRenderingContext2D::~CanvasRenderingContext2D()
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{
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}
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void CanvasRenderingContext2D::set_fill_style(String style)
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{
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m_fill_style = Gfx::Color::from_string(style).value_or(Color::Black);
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}
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String CanvasRenderingContext2D::fill_style() const
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{
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return m_fill_style.to_string();
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}
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void CanvasRenderingContext2D::fill_rect(float x, float y, float width, float height)
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{
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auto painter = this->painter();
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if (!painter)
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return;
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Gfx::FloatRect rect = compute_rect(x, y, width, height);
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painter->fill_rect(enclosing_int_rect(rect), m_fill_style);
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did_draw(rect);
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}
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void CanvasRenderingContext2D::set_stroke_style(String style)
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{
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m_stroke_style = Gfx::Color::from_string(style).value_or(Color::Black);
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}
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String CanvasRenderingContext2D::stroke_style() const
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{
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return m_fill_style.to_string();
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}
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void CanvasRenderingContext2D::stroke_rect(float x, float y, float width, float height)
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{
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auto painter = this->painter();
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if (!painter)
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return;
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Gfx::FloatRect rect = compute_rect(x, y, width, height);
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painter->draw_rect(enclosing_int_rect(rect), m_stroke_style);
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did_draw(rect);
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}
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void CanvasRenderingContext2D::scale(float sx, float sy)
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{
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// FIXME: Actually do something with the scale factor!
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dbg() << "CanvasRenderingContext2D::scale(): " << String::format("%f", sx) << ", " << String::format("%f", sy);
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m_scale_x = sx;
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m_scale_y = sy;
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}
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void CanvasRenderingContext2D::translate(float x, float y)
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{
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// FIXME: Actually do something with the translation!
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dbg() << "CanvasRenderingContext2D::translate(): " << String::format("%f", x) << ", " << String::format("%f", y);
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m_translate_x = x;
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m_translate_y = y;
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}
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Gfx::FloatRect CanvasRenderingContext2D::compute_rect(float x, float y, float width, float height)
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{
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return {
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(x + m_translate_x) * m_scale_x,
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(y + m_translate_y) * m_scale_y,
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width * m_scale_x,
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height * m_scale_y
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};
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}
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void CanvasRenderingContext2D::did_draw(const Gfx::FloatRect&)
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{
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// FIXME: Make use of the rect to reduce the invalidated area when possible.
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if (!m_element)
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return;
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if (!m_element->layout_node())
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return;
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m_element->layout_node()->set_needs_display();
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}
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OwnPtr<Gfx::Painter> CanvasRenderingContext2D::painter()
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{
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if (!m_element)
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return nullptr;
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return make<Gfx::Painter>(m_element->ensure_bitmap());
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}
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}
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