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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 
     28 #include "core/html/canvas/WebGLLoseContext.h"
     29 
     30 #include "core/html/canvas/WebGLRenderingContext.h"
     31 
     32 namespace WebCore {
     33 
     34 WebGLLoseContext::WebGLLoseContext(WebGLRenderingContext* context)
     35     : WebGLExtension(context)
     36 {
     37     ScriptWrappable::init(this);
     38 }
     39 
     40 WebGLLoseContext::~WebGLLoseContext()
     41 {
     42 }
     43 
     44 void WebGLLoseContext::lose(bool force)
     45 {
     46     if (force)
     47         WebGLExtension::lose(true);
     48 }
     49 
     50 WebGLExtension::ExtensionName WebGLLoseContext::getName() const
     51 {
     52     return WebGLLoseContextName;
     53 }
     54 
     55 PassRefPtr<WebGLLoseContext> WebGLLoseContext::create(WebGLRenderingContext* context)
     56 {
     57     return adoptRef(new WebGLLoseContext(context));
     58 }
     59 
     60 void WebGLLoseContext::loseContext()
     61 {
     62     if (!isLost())
     63         m_context->forceLostContext(WebGLRenderingContext::SyntheticLostContext);
     64 }
     65 
     66 void WebGLLoseContext::restoreContext()
     67 {
     68     if (!isLost())
     69         m_context->forceRestoreContext();
     70 }
     71 
     72 bool WebGLLoseContext::supported(WebGLRenderingContext*)
     73 {
     74     return true;
     75 }
     76 
     77 const char* WebGLLoseContext::getExtensionName()
     78 {
     79     return "WEBGL_lose_context";
     80 }
     81 
     82 } // namespace WebCore
     83