xref: /aoo42x/main/sd/source/ui/tools/IconCache.cxx (revision 79aad27f)
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21*5b190011SAndrew Rist 
22*5b190011SAndrew Rist 
23cdf0e10cSrcweir 
24cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove
25cdf0e10cSrcweir #include "precompiled_sd.hxx"
26cdf0e10cSrcweir 
27cdf0e10cSrcweir #include "tools/IconCache.hxx"
28cdf0e10cSrcweir 
29cdf0e10cSrcweir #include "sdresid.hxx"
30cdf0e10cSrcweir #include <hash_map>
31cdf0e10cSrcweir #include <osl/doublecheckedlocking.h>
32cdf0e10cSrcweir #include <osl/getglobalmutex.hxx>
33cdf0e10cSrcweir 
34cdf0e10cSrcweir namespace sd {
35cdf0e10cSrcweir 
36cdf0e10cSrcweir //===== IconCache::Implementation =============================================
37cdf0e10cSrcweir 
38cdf0e10cSrcweir class IconCache::Implementation
39cdf0e10cSrcweir {
40cdf0e10cSrcweir private:
41cdf0e10cSrcweir     friend class IconCache;
42cdf0e10cSrcweir 
43cdf0e10cSrcweir     /** This pointer holds a valid reference from first time that
44cdf0e10cSrcweir         IconCache::Instance() is called to the end of the sd module when the
45cdf0e10cSrcweir         cache is destroyed from SdGlobalResourceContainer.
46cdf0e10cSrcweir     */
47cdf0e10cSrcweir     static IconCache* mpInstance;
48cdf0e10cSrcweir 
49cdf0e10cSrcweir     typedef ::std::hash_map<sal_uInt16,Image> ImageContainer;
50cdf0e10cSrcweir     ImageContainer maContainer;
51cdf0e10cSrcweir 
52cdf0e10cSrcweir     Image GetIcon (sal_uInt16 nResourceId);
53cdf0e10cSrcweir };
54cdf0e10cSrcweir 
55cdf0e10cSrcweir IconCache* IconCache::Implementation::mpInstance = NULL;
56cdf0e10cSrcweir 
57cdf0e10cSrcweir 
58cdf0e10cSrcweir 
GetIcon(sal_uInt16 nResourceId)59cdf0e10cSrcweir Image IconCache::Implementation::GetIcon (sal_uInt16 nResourceId)
60cdf0e10cSrcweir {
61cdf0e10cSrcweir     Image aResult;
62cdf0e10cSrcweir     ImageContainer::iterator iImage;
63cdf0e10cSrcweir     iImage = maContainer.find (nResourceId);
64cdf0e10cSrcweir     if (iImage == maContainer.end())
65cdf0e10cSrcweir     {
66cdf0e10cSrcweir         aResult = Image(BitmapEx(SdResId(nResourceId)));
67cdf0e10cSrcweir         maContainer[nResourceId] = aResult;
68cdf0e10cSrcweir     }
69cdf0e10cSrcweir     else
70cdf0e10cSrcweir         aResult = iImage->second;
71cdf0e10cSrcweir     return aResult;
72cdf0e10cSrcweir }
73cdf0e10cSrcweir 
74cdf0e10cSrcweir 
75cdf0e10cSrcweir 
76cdf0e10cSrcweir 
77cdf0e10cSrcweir //===== IconCache =============================================================
78cdf0e10cSrcweir 
79cdf0e10cSrcweir //static
Instance(void)80cdf0e10cSrcweir IconCache& IconCache::Instance (void)
81cdf0e10cSrcweir {
82cdf0e10cSrcweir     if (Implementation::mpInstance == NULL)
83cdf0e10cSrcweir     {
84cdf0e10cSrcweir         ::osl::GetGlobalMutex aMutexFunctor;
85cdf0e10cSrcweir         ::osl::MutexGuard aGuard (aMutexFunctor());
86cdf0e10cSrcweir         if (Implementation::mpInstance == NULL)
87cdf0e10cSrcweir         {
88cdf0e10cSrcweir             IconCache* pCache = new IconCache ();
89cdf0e10cSrcweir             SdGlobalResourceContainer::Instance().AddResource (
90cdf0e10cSrcweir                 ::std::auto_ptr<SdGlobalResource>(pCache));
91cdf0e10cSrcweir             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
92cdf0e10cSrcweir             Implementation::mpInstance = pCache;
93cdf0e10cSrcweir         }
94cdf0e10cSrcweir     }
95cdf0e10cSrcweir     else
96cdf0e10cSrcweir     {
97cdf0e10cSrcweir         OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
98cdf0e10cSrcweir     }
99cdf0e10cSrcweir 
100cdf0e10cSrcweir     DBG_ASSERT(Implementation::mpInstance!=NULL,
101cdf0e10cSrcweir         "IconCache::Instance(): instance is NULL");
102cdf0e10cSrcweir     return *Implementation::mpInstance;
103cdf0e10cSrcweir }
104cdf0e10cSrcweir 
105cdf0e10cSrcweir 
106cdf0e10cSrcweir 
107cdf0e10cSrcweir 
GetIcon(sal_uInt16 nResourceId)108cdf0e10cSrcweir Image IconCache::GetIcon (sal_uInt16 nResourceId)
109cdf0e10cSrcweir {
110cdf0e10cSrcweir     return mpImpl->GetIcon (nResourceId);
111cdf0e10cSrcweir }
112cdf0e10cSrcweir 
113cdf0e10cSrcweir 
114cdf0e10cSrcweir 
115cdf0e10cSrcweir 
IconCache(void)116cdf0e10cSrcweir IconCache::IconCache (void)
117cdf0e10cSrcweir     : mpImpl (new Implementation())
118cdf0e10cSrcweir {
119cdf0e10cSrcweir }
120cdf0e10cSrcweir 
121cdf0e10cSrcweir 
122cdf0e10cSrcweir 
123cdf0e10cSrcweir 
~IconCache(void)124cdf0e10cSrcweir IconCache::~IconCache (void)
125cdf0e10cSrcweir {
126cdf0e10cSrcweir     // empty
127cdf0e10cSrcweir }
128cdf0e10cSrcweir 
129cdf0e10cSrcweir } // end of namespace sd
130