content/canvas/src/WebGLQuery.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef WEBGLQUERY_H_
   7 #define WEBGLQUERY_H_
   8
   9 #include "WebGLObjectModel.h"
  10
  11 #include "nsWrapperCache.h"
  12
  13 #include "mozilla/LinkedList.h"
  14
  15 namespace mozilla {
  16
  17 class WebGLQuery MOZ_FINAL
  18     : public nsWrapperCache
  19     , public WebGLRefCountedObject<WebGLQuery>
  20     , public LinkedListElement<WebGLQuery>
  21     , public WebGLContextBoundObject
  22 {
  23 // -----------------------------------------------------------------------------
  24 // PUBLIC
  25 public:
  26
  27     // -------------------------------------------------------------------------
  28     // CONSTRUCTOR & DESTRUCTOR
  29
  30     WebGLQuery(WebGLContext *context);
  31
  32     ~WebGLQuery() {
  33         DeleteOnce();
  34     };
  35
  36
  37     // -------------------------------------------------------------------------
  38     // MEMBER FUNCTIONS
  39
  40     bool IsActive() const;
  41
  42     bool HasEverBeenActive()
  43     {
  44         return mType != 0;
  45     }
  46
  47
  48     // -------------------------------------------------------------------------
  49     // IMPLEMENT WebGLRefCountedObject and WebGLContextBoundObject
  50
  51     void Delete();
  52
  53     WebGLContext* GetParentObject() const
  54     {
  55         return Context();
  56     }
  57
  58
  59     // -------------------------------------------------------------------------
  60     // IMPLEMENT NS
  61     virtual JSObject* WrapObject(JSContext *cx,
  62                                  JS::Handle<JSObject*> scope) MOZ_OVERRIDE;
  63
  64     NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLQuery)
  65     NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLQuery)
  66
  67
  68 // -----------------------------------------------------------------------------
  69 // PRIVATE
  70 private:
  71
  72     // -------------------------------------------------------------------------
  73     // MEMBERS
  74     GLuint mGLName;
  75     GLenum mType;
  76
  77     // -------------------------------------------------------------------------
  78     // FRIENDSHIPS
  79     friend class WebGLContext;
  80 };
  81
  82 } // namespace mozilla
  83
  84 #endif