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LibWeb: Add ImageData objects and implement 2D context putImageData()

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An ImageData is a wrapper around a Bitmap wrapper around a
JS::Uint8ClampedArray.
This commit is contained in:
Andreas Kling 2020-04-21 23:49:51 +02:00
parent 54133c683d
commit 2d4c91df8e
10 changed files with 359 additions and 0 deletions
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15
Libraries/LibWeb/DOM/CanvasRenderingContext2D.cpp
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@ -29,6 +29,7 @@
#include <LibWeb/DOM/CanvasRenderingContext2D.h>
#include <LibWeb/DOM/HTMLCanvasElement.h>
#include <LibWeb/DOM/HTMLImageElement.h>
#include <LibWeb/DOM/ImageData.h>
namespace Web {
@ -175,4 +176,18 @@ void CanvasRenderingContext2D::stroke()
painter->stroke_path(m_path, m_stroke_style, m_line_width);
}
RefPtr<ImageData> CanvasRenderingContext2D::create_image_data(JS::GlobalObject& global_object, int width, int height) const
{
return ImageData::create_with_size(global_object, width, height);
}
void CanvasRenderingContext2D::put_image_data(const ImageData& image_data, float x, float y)
{
auto painter = this->painter();
if (!painter)
return;
painter->blit(Gfx::Point(x, y), image_data.bitmap(), image_data.bitmap().rect());
}
}