1 /* 2 * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21 #ifndef RefCountedGDIHandle_h 22 #define RefCountedGDIHandle_h 23 24 #include <windows.h> 25 #include <wtf/HashFunctions.h> 26 #include <wtf/OwnPtr.h> 27 #include <wtf/RefCounted.h> 28 29 namespace WebCore { 30 31 template <typename T> class RefCountedGDIHandle : public RefCounted<RefCountedGDIHandle<T> > { 32 public: 33 static PassRefPtr<RefCountedGDIHandle> create(T handle) 34 { 35 return adoptRef(new RefCountedGDIHandle<T>(handle)); 36 } 37 38 static PassRefPtr<RefCountedGDIHandle<T> > createDeleted() 39 { 40 return adoptRef(new RefCountedGDIHandle<T>(reinterpret_cast<T>(-1))); 41 } 42 43 ~RefCountedGDIHandle() 44 { 45 if (m_handle != reinterpret_cast<T>(-1)) 46 WTF::deleteOwnedPtr(m_handle); 47 } 48 49 T handle() const 50 { 51 return m_handle; 52 } 53 54 unsigned hash() const 55 { 56 return WTF::PtrHash<T>::hash(m_handle); 57 } 58 59 private: 60 RefCountedGDIHandle(T handle) 61 : m_handle(handle) 62 { 63 } 64 65 T m_handle; 66 }; 67 68 } // namespace WebCore 69 70 #endif // RefCountedGDIHandle_h 71
