| // Copyright 2016 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. |
| |
| #include "modules/canvas/offscreencanvas/OffscreenCanvasModule.h" |
| |
| #include "core/dom/ExecutionContext.h" |
| #include "core/html/canvas/CanvasContextCreationAttributes.h" |
| #include "core/offscreencanvas/OffscreenCanvas.h" |
| #include "modules/canvas/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h" |
| |
| namespace blink { |
| |
| void OffscreenCanvasModule::getContext( |
| ExecutionContext* execution_context, |
| OffscreenCanvas& offscreen_canvas, |
| const String& id, |
| const CanvasContextCreationAttributes& attributes, |
| ExceptionState& exception_state, |
| OffscreenRenderingContext& result) { |
| if (offscreen_canvas.IsNeutered()) { |
| exception_state.ThrowDOMException(kInvalidStateError, |
| "OffscreenCanvas object is detached"); |
| return; |
| } |
| |
| // OffscreenCanvas cannot be transferred after getContext, so this execution |
| // context will always be the right one from here on. |
| CanvasRenderingContext* context = offscreen_canvas.GetCanvasRenderingContext( |
| execution_context, id, attributes); |
| if (context) |
| context->SetOffscreenCanvasGetContextResult(result); |
| } |
| |
| } // namespace blink |
