1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_sd.hxx" 26 27 #include "tools/IconCache.hxx" 28 29 #include "sdresid.hxx" 30 #include <hash_map> 31 #include <osl/doublecheckedlocking.h> 32 #include <osl/getglobalmutex.hxx> 33 34 namespace sd { 35 36 //===== IconCache::Implementation ============================================= 37 38 class IconCache::Implementation 39 { 40 private: 41 friend class IconCache; 42 43 /** This pointer holds a valid reference from first time that 44 IconCache::Instance() is called to the end of the sd module when the 45 cache is destroyed from SdGlobalResourceContainer. 46 */ 47 static IconCache* mpInstance; 48 49 typedef ::std::hash_map<sal_uInt16,Image> ImageContainer; 50 ImageContainer maContainer; 51 52 Image GetIcon (sal_uInt16 nResourceId); 53 }; 54 55 IconCache* IconCache::Implementation::mpInstance = NULL; 56 57 58 59 Image IconCache::Implementation::GetIcon (sal_uInt16 nResourceId) 60 { 61 Image aResult; 62 ImageContainer::iterator iImage; 63 iImage = maContainer.find (nResourceId); 64 if (iImage == maContainer.end()) 65 { 66 aResult = Image(BitmapEx(SdResId(nResourceId))); 67 maContainer[nResourceId] = aResult; 68 } 69 else 70 aResult = iImage->second; 71 return aResult; 72 } 73 74 75 76 77 //===== IconCache ============================================================= 78 79 //static 80 IconCache& IconCache::Instance (void) 81 { 82 if (Implementation::mpInstance == NULL) 83 { 84 ::osl::GetGlobalMutex aMutexFunctor; 85 ::osl::MutexGuard aGuard (aMutexFunctor()); 86 if (Implementation::mpInstance == NULL) 87 { 88 IconCache* pCache = new IconCache (); 89 SdGlobalResourceContainer::Instance().AddResource ( 90 ::std::auto_ptr<SdGlobalResource>(pCache)); 91 OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER(); 92 Implementation::mpInstance = pCache; 93 } 94 } 95 else 96 { 97 OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER(); 98 } 99 100 DBG_ASSERT(Implementation::mpInstance!=NULL, 101 "IconCache::Instance(): instance is NULL"); 102 return *Implementation::mpInstance; 103 } 104 105 106 107 108 Image IconCache::GetIcon (sal_uInt16 nResourceId) 109 { 110 return mpImpl->GetIcon (nResourceId); 111 } 112 113 114 115 116 IconCache::IconCache (void) 117 : mpImpl (new Implementation()) 118 { 119 } 120 121 122 123 124 IconCache::~IconCache (void) 125 { 126 // empty 127 } 128 129 } // end of namespace sd 130