| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: artprov.cpp |
| 3 | // Purpose: wxArtProvider class |
| 4 | // Author: Vaclav Slavik |
| 5 | // Modified by: |
| 6 | // Created: 18/03/2002 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Vaclav Slavik |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // --------------------------------------------------------------------------- |
| 13 | // headers |
| 14 | // --------------------------------------------------------------------------- |
| 15 | |
| 16 | #ifdef __GNUG__ |
| 17 | #pragma implementation "artprov.h" |
| 18 | #endif |
| 19 | |
| 20 | // For compilers that support precompilation, includes "wx.h". |
| 21 | #include "wx/wxprec.h" |
| 22 | |
| 23 | #if defined(__BORLANDC__) |
| 24 | #pragma hdrstop |
| 25 | #endif |
| 26 | |
| 27 | #ifndef WX_PRECOMP |
| 28 | #include "wx/log.h" |
| 29 | #include "wx/list.h" |
| 30 | #endif |
| 31 | |
| 32 | #include "wx/artprov.h" |
| 33 | #include "wx/hashmap.h" |
| 34 | #include "wx/module.h" |
| 35 | #include "wx/image.h" |
| 36 | |
| 37 | // For the purposes of forcing this module to link |
| 38 | extern char g_ArtProviderModule; |
| 39 | |
| 40 | // =========================================================================== |
| 41 | // implementation |
| 42 | // =========================================================================== |
| 43 | |
| 44 | #include "wx/listimpl.cpp" |
| 45 | WX_DECLARE_LIST(wxArtProvider, wxArtProvidersList); |
| 46 | WX_DEFINE_LIST(wxArtProvidersList); |
| 47 | |
| 48 | // ---------------------------------------------------------------------------- |
| 49 | // Cache class - stores already requested bitmaps |
| 50 | // ---------------------------------------------------------------------------- |
| 51 | |
| 52 | WX_DECLARE_EXPORTED_STRING_HASH_MAP(wxBitmap, wxArtProviderBitmapsHash); |
| 53 | |
| 54 | class WXDLLEXPORT wxArtProviderCache |
| 55 | { |
| 56 | public: |
| 57 | bool GetBitmap(const wxString& full_id, wxBitmap* bmp); |
| 58 | void PutBitmap(const wxString& full_id, const wxBitmap& bmp) |
| 59 | { m_bitmapsHash[full_id] = bmp; } |
| 60 | |
| 61 | void Clear(); |
| 62 | |
| 63 | static wxString ConstructHashID(const wxArtID& id, |
| 64 | const wxArtClient& client, |
| 65 | const wxSize& size); |
| 66 | |
| 67 | private: |
| 68 | wxArtProviderBitmapsHash m_bitmapsHash; |
| 69 | }; |
| 70 | |
| 71 | bool wxArtProviderCache::GetBitmap(const wxString& full_id, wxBitmap* bmp) |
| 72 | { |
| 73 | wxArtProviderBitmapsHash::iterator entry = m_bitmapsHash.find(full_id); |
| 74 | if ( entry == m_bitmapsHash.end() ) |
| 75 | { |
| 76 | return FALSE; |
| 77 | } |
| 78 | else |
| 79 | { |
| 80 | *bmp = entry->second; |
| 81 | return TRUE; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | void wxArtProviderCache::Clear() |
| 86 | { |
| 87 | // Hack to make the default provider link |
| 88 | // with the application |
| 89 | g_ArtProviderModule = 0; |
| 90 | m_bitmapsHash.clear(); |
| 91 | } |
| 92 | |
| 93 | /*static*/ wxString wxArtProviderCache::ConstructHashID( |
| 94 | const wxArtID& id, const wxArtClient& client, |
| 95 | const wxSize& size) |
| 96 | { |
| 97 | wxString str; |
| 98 | str.Printf(wxT("%s-%s-%i-%i"), id.c_str(), client.c_str(), size.x, size.y); |
| 99 | return str; |
| 100 | } |
| 101 | |
| 102 | |
| 103 | // ---------------------------------------------------------------------------- |
| 104 | // wxArtProvider class |
| 105 | // ---------------------------------------------------------------------------- |
| 106 | |
| 107 | IMPLEMENT_ABSTRACT_CLASS(wxArtProvider, wxObject) |
| 108 | |
| 109 | wxArtProvidersList *wxArtProvider::sm_providers = NULL; |
| 110 | wxArtProviderCache *wxArtProvider::sm_cache = NULL; |
| 111 | |
| 112 | /*static*/ void wxArtProvider::PushProvider(wxArtProvider *provider) |
| 113 | { |
| 114 | if ( !sm_providers ) |
| 115 | { |
| 116 | sm_providers = new wxArtProvidersList; |
| 117 | sm_providers->DeleteContents(TRUE); |
| 118 | sm_cache = new wxArtProviderCache; |
| 119 | } |
| 120 | |
| 121 | sm_providers->Insert(provider); |
| 122 | sm_cache->Clear(); |
| 123 | } |
| 124 | |
| 125 | /*static*/ bool wxArtProvider::PopProvider() |
| 126 | { |
| 127 | wxCHECK_MSG( sm_providers, FALSE, _T("no wxArtProvider exists") ); |
| 128 | wxCHECK_MSG( sm_providers->GetCount() > 0, FALSE, _T("wxArtProviders stack is empty") ); |
| 129 | |
| 130 | sm_providers->DeleteNode(sm_providers->GetFirst()); |
| 131 | sm_cache->Clear(); |
| 132 | return TRUE; |
| 133 | } |
| 134 | |
| 135 | /*static*/ bool wxArtProvider::RemoveProvider(wxArtProvider *provider) |
| 136 | { |
| 137 | wxCHECK_MSG( sm_providers, FALSE, _T("no wxArtProvider exists") ); |
| 138 | |
| 139 | if ( sm_providers->DeleteObject(provider) ) |
| 140 | { |
| 141 | sm_cache->Clear(); |
| 142 | return TRUE; |
| 143 | } |
| 144 | |
| 145 | return FALSE; |
| 146 | } |
| 147 | |
| 148 | /*static*/ void wxArtProvider::CleanUpProviders() |
| 149 | { |
| 150 | wxDELETE(sm_providers); |
| 151 | wxDELETE(sm_cache); |
| 152 | } |
| 153 | |
| 154 | /*static*/ wxBitmap wxArtProvider::GetBitmap(const wxArtID& id, |
| 155 | const wxArtClient& client, |
| 156 | const wxSize& size) |
| 157 | { |
| 158 | // safety-check against writing client,id,size instead of id,client,size: |
| 159 | wxASSERT_MSG( client.Last() == _T('C'), _T("invalid 'client' parameter") ); |
| 160 | |
| 161 | wxCHECK_MSG( sm_providers, wxNullBitmap, _T("no wxArtProvider exists") ); |
| 162 | |
| 163 | wxString hashId = wxArtProviderCache::ConstructHashID(id, client, size); |
| 164 | |
| 165 | wxBitmap bmp; |
| 166 | if ( !sm_cache->GetBitmap(hashId, &bmp) ) |
| 167 | { |
| 168 | for (wxArtProvidersList::Node *node = sm_providers->GetFirst(); |
| 169 | node; node = node->GetNext()) |
| 170 | { |
| 171 | bmp = node->GetData()->CreateBitmap(id, client, size); |
| 172 | if ( bmp.Ok() ) |
| 173 | { |
| 174 | if ( size != wxDefaultSize && |
| 175 | (bmp.GetWidth() != size.x || bmp.GetHeight() != size.y) ) |
| 176 | { |
| 177 | wxImage img = bmp.ConvertToImage(); |
| 178 | img.Rescale(size.x, size.y); |
| 179 | bmp = wxBitmap(img); |
| 180 | } |
| 181 | break; |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | sm_cache->PutBitmap(hashId, bmp); |
| 186 | } |
| 187 | |
| 188 | return bmp; |
| 189 | } |
| 190 | |
| 191 | /*static*/ wxIcon wxArtProvider::GetIcon(const wxArtID& id, |
| 192 | const wxArtClient& client, |
| 193 | const wxSize& size) |
| 194 | { |
| 195 | wxCHECK_MSG( sm_providers, wxNullIcon, _T("no wxArtProvider exists") ); |
| 196 | |
| 197 | wxBitmap bmp = GetBitmap(id, client, size); |
| 198 | if ( !bmp.Ok() ) |
| 199 | return wxNullIcon; |
| 200 | |
| 201 | wxIcon icon; |
| 202 | icon.CopyFromBitmap(bmp); |
| 203 | return icon; |
| 204 | } |
| 205 | |
| 206 | |
| 207 | class wxArtProviderModule: public wxModule |
| 208 | { |
| 209 | public: |
| 210 | bool OnInit() { return TRUE; } |
| 211 | void OnExit() { wxArtProvider::CleanUpProviders(); } |
| 212 | |
| 213 | DECLARE_DYNAMIC_CLASS(wxArtProviderModule) |
| 214 | }; |
| 215 | |
| 216 | IMPLEMENT_DYNAMIC_CLASS(wxArtProviderModule, wxModule) |