#pragma once
#include "AffineTransform.h"
#include "CanvasBase.h"
#include "EventTarget.h"
#include "ExceptionOr.h"
#include "IntSize.h"
#include "JSDOMPromiseDeferred.h"
#include "ScriptWrappable.h"
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class ImageBitmap;
class WebGLRenderingContext;
#if ENABLE(WEBGL)
using OffscreenRenderingContext = RefPtr<WebGLRenderingContext>;
#endif
class OffscreenCanvas final : public RefCounted<OffscreenCanvas>, public CanvasBase, public EventTargetWithInlineData {
WTF_MAKE_FAST_ALLOCATED;
public:
struct ImageEncodeOptions {
String type = "image/png";
double quality = 1.0;
};
enum class RenderingContextType {
_2d,
Webgl
};
static Ref<OffscreenCanvas> create(ScriptExecutionContext&, unsigned width, unsigned height);
virtual ~OffscreenCanvas();
unsigned width() const final;
void setWidth(unsigned);
unsigned height() const final;
void setHeight(unsigned);
const IntSize& size() const final;
void setSize(const IntSize&) final;
#if ENABLE(WEBGL)
ExceptionOr<OffscreenRenderingContext> getContext(JSC::ExecState&, RenderingContextType, Vector<JSC::Strong<JSC::Unknown>>&& arguments);
#endif
RefPtr<ImageBitmap> transferToImageBitmap();
GraphicsContext* drawingContext() const final { return nullptr; }
GraphicsContext* existingDrawingContext() const final { return nullptr; }
void makeRenderingResultsAvailable() final { }
void didDraw(const FloatRect&) final { }
AffineTransform baseTransform() const final { return { }; }
Image* copiedImage() const final { return nullptr; }
using RefCounted::ref;
using RefCounted::deref;
private:
OffscreenCanvas(ScriptExecutionContext&, unsigned width, unsigned height);
bool isOffscreenCanvas() const final { return true; }
ScriptExecutionContext* scriptExecutionContext() const final { return CanvasBase::scriptExecutionContext(); }
EventTargetInterface eventTargetInterface() const final { return OffscreenCanvasEventTargetInterfaceType; }
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
void refCanvasBase() final { ref(); }
void derefCanvasBase() final { deref(); }
IntSize m_size;
};
}
SPECIALIZE_TYPE_TRAITS_CANVAS(WebCore::OffscreenCanvas, isOffscreenCanvas())