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a37c29e353
This patch adds HTMLCanvasElement along with a LayoutCanvas object.
The DOM and layout parts are very similar to <img> elements.
The <canvas> element holds a Gfx::Bitmap which is sized according to
the "width" and "height" attributes on the element.
Calling .getContext("2d") on a <canvas> element gives you a context
object that draws into the underlying Gfx::Bitmap of the <canvas>.
The context weakly points to the <canvas> which allows it to outlive
the canvas element if needed.
This is really quite cool. :^)
44 lines
962 B
C++
44 lines
962 B
C++
#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(int x, int y, int width, int 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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painter->fill_rect({ x, y, width, height }, m_fill_style);
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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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