1 files changed, 91 insertions, 0 deletions
diff --git a/src/javascript/jsc/bindings/webcore/OffscreenCanvas.h b/src/javascript/jsc/bindings/webcore/OffscreenCanvas.h
new file mode 100644
index 000000000..464a22275
--- /dev/null
+++ b/src/javascript/jsc/bindings/webcore/OffscreenCanvas.h
@@ -0,0 +1,91 @@
+#pragma once
+
+#include "root.h"
+
+#include "ContextDestructionObserver.h"
+#include "EventTarget.h"
+#include "ExceptionOr.h"
+#include "IDLTypes.h"
+// #include "ImageBuffer.h"
+// #include "ImageBufferPipe.h"
+// #include "IntSize.h"
+#include "ScriptWrappable.h"
+#include <wtf/FixedVector.h>
+#include <wtf/Forward.h>
+#include <wtf/RefCounted.h>
+#include <wtf/ThreadSafeRefCounted.h>
+#include <wtf/WeakPtr.h>
+#include <wtf/text/WTFString.h>
+
+namespace WebCore {
+class OffscreenCanvasRenderingContext2D;
+class OffscreenCanvas : public RefCounted<OffscreenCanvas>, public EventTargetWithInlineData, private ContextDestructionObserver {
+    WTF_MAKE_ISO_ALLOCATED(OffscreenCanvas);
+
+public:
+    struct ImageEncodeOptions {
+        String type = "image/png";
+        double quality = 1.0;
+    };
+
+    enum class RenderingContextType {
+        _2d,
+        Webgl,
+        Webgl2
+    };
+    using OffscreenRenderingContext = std::variant<
+#if ENABLE(WEBGL)
+        RefPtr<WebGLRenderingContext>,
+#endif
+#if ENABLE(WEBGL2)
+        RefPtr<WebGL2RenderingContext>,
+#endif
+        RefPtr<OffscreenCanvasRenderingContext2D>>;
+
+    inline unsigned width()
+    {
+        return m_width;
+    }
+    inline unsigned height()
+    {
+        return m_height;
+    }
+    void setWidth(unsigned dimension)
+    {
+        m_width = dimension;
+    }
+    void setHeight(unsigned dimension)
+    {
+        m_height = dimension;
+    }
+
+    ExceptionOr<std::optional<OffscreenRenderingContext>> getContext(JSC::JSGlobalObject&, RenderingContextType);
+
+    using RefCounted::deref;
+    using RefCounted::ref;
+
+    static Ref<OffscreenCanvas> create(ScriptExecutionContext&, unsigned width, unsigned height);
+
+    ~OffscreenCanvas();
+
+private:
+    OffscreenCanvas(ScriptExecutionContext& ctx, unsigned width, unsigned height);
+
+    bool isOffscreenCanvas() const { return true; }
+
+    ScriptExecutionContext* scriptExecutionContext() const { return ContextDestructionObserver::scriptExecutionContext(); }
+    ScriptExecutionContext* canvasBaseScriptExecutionContext() const { return ContextDestructionObserver::scriptExecutionContext(); }
+
+    EventTargetInterface eventTargetInterface() const { return OffscreenCanvasEventTargetInterfaceType; }
+    void refEventTarget() { ref(); }
+    void derefEventTarget() { deref(); }
+
+    void refCanvasBase() { ref(); }
+    void derefCanvasBase() { deref(); }
+
+    // void setSize(const IntSize&) final;
+    unsigned m_width;
+    unsigned m_height;
+};
+
+}
+\ No newline at end of file