third_party/WebKit/Source/modules/offscreencanvas/OffscreenCanvas.idl

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Note: If there're more context types implemented, they should be added here
// to form a union type of OffscreenCanvasRenderingContext
typedef OffscreenCanvasRenderingContext2D OffscreenRenderingContext;

[
    Constructor([EnforceRange] unsigned long width, [EnforceRange] unsigned long height),
    GarbageCollected,
    Exposed=(Window,Worker),
    RuntimeEnabled=ExperimentalCanvasFeatures,
] interface OffscreenCanvas {
    [EnforceRange] attribute unsigned long width;
    [EnforceRange] attribute unsigned long height;

    OffscreenRenderingContext? getContext(DOMString contextId, optional CanvasContextCreationAttributes attributes); 
};