Source/WebCore/html/HTMLCanvasElement.idl

/*
 * Copyright (C) 2006, 2008, 2009 Apple Inc. All rights reserved.
 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

typedef (
#if defined(ENABLE_WEBGL) && ENABLE_WEBGL
    WebGLRenderingContext or
#endif
#if defined(ENABLE_WEBGL2) && ENABLE_WEBGL2
    WebGL2RenderingContext or
#endif
    ImageBitmapRenderingContext or 
    CanvasRenderingContext2D) RenderingContext;

[
    ActiveDOMObject,
    JSCustomMarkFunction,
    JSGenerateToNativeObject,
    ReportExtraMemoryCost,
    ReportExternalMemoryCost,
    Exposed=Window
] interface HTMLCanvasElement : HTMLElement {
    [CEReactions=NotNeeded, CallTracer=InspectorCanvasCallTracer] attribute unsigned long width;
    [CEReactions=NotNeeded, CallTracer=InspectorCanvasCallTracer] attribute unsigned long height;

    [CallWith=GlobalObject] RenderingContext? getContext(DOMString contextId, any... arguments);

    DOMString toDataURL(optional DOMString type, optional any quality);
    [CallWith=ScriptExecutionContext] undefined toBlob(BlobCallback callback, optional DOMString type, optional any quality);
    [Conditional=OFFSCREEN_CANVAS, EnabledAtRuntime=OffscreenCanvasEnabled, CallWith=ScriptExecutionContext] OffscreenCanvas transferControlToOffscreen();

    [Conditional=MEDIA_STREAM, CallWith=Document, NewObject] MediaStream captureStream(optional double frameRequestRate);
};