src/common/fontmgrcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/fontmgrcmn.cpp
   3 // Purpose:     font management for ports that don't have their own
   4 // Author:      Vaclav Slavik
   5 // Created:     2006-11-18
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
   8 //              (c) 2006 REA Elektronik GmbH
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #include "wx/private/fontmgr.h"
  20
  21 #include "wx/listimpl.cpp"
  22 #include "wx/hashmap.h"
  23
  24 WX_DECLARE_LIST(wxFontInstance, wxFontInstanceList);
  25 WX_DEFINE_LIST(wxFontInstanceList)
  26 WX_DEFINE_LIST(wxFontBundleList)
  27 WX_DECLARE_HASH_MAP(wxString, wxFontBundle*,
  28                     wxStringHash, wxStringEqual,
  29                     wxFontBundleHash);
  30
  31 // ============================================================================
  32 // implementation
  33 // ============================================================================
  34
  35 // ----------------------------------------------------------------------------
  36 // wxFontFaceBase
  37 // ----------------------------------------------------------------------------
  38
  39 wxFontFaceBase::wxFontFaceBase()
  40     : m_refCnt(0)
  41 {
  42     m_instances = new wxFontInstanceList;
  43     m_instances->DeleteContents(true);
  44 }
  45
  46 wxFontFaceBase::~wxFontFaceBase()
  47 {
  48     delete m_instances;
  49 }
  50
  51 void wxFontFaceBase::Acquire()
  52 {
  53     m_refCnt++;
  54 }
  55
  56 void wxFontFaceBase::Release()
  57 {
  58     if ( --m_refCnt == 0 )
  59     {
  60         m_instances->Clear();
  61     }
  62 }
  63
  64 wxFontInstance *wxFontFaceBase::GetFontInstance(float ptSize, bool aa)
  65 {
  66     wxASSERT_MSG( m_refCnt > 0, _T("font library not loaded!") );
  67
  68     wxFontInstance *i;
  69     wxFontInstanceList::Node *node;
  70
  71     for ( node = m_instances->GetFirst(); node; node = node->GetNext() )
  72     {
  73         i = node->GetData();
  74         if ( i->GetPointSize() == ptSize && i->IsAntiAliased() == aa )
  75             return i;
  76     }
  77
  78     i = CreateFontInstance(ptSize, aa);
  79     m_instances->Append(i);
  80     return i;
  81 }
  82
  83 // ----------------------------------------------------------------------------
  84 // wxFontBundleBase
  85 // ----------------------------------------------------------------------------
  86
  87 wxFontBundleBase::wxFontBundleBase()
  88 {
  89     for (int i = 0; i < FaceType_Max; i++)
  90         m_faces[i] = NULL;
  91 }
  92
  93 wxFontBundleBase::~wxFontBundleBase()
  94 {
  95     for (int i = 0; i < FaceType_Max; i++)
  96         delete m_faces[i];
  97 }
  98
  99 wxFontFace *wxFontBundleBase::GetFace(FaceType type) const
 100 {
 101     wxFontFace *f = m_faces[type];
 102
 103     wxCHECK_MSG( f, NULL, _T("no such face in font bundle") );
 104
 105     f->Acquire();
 106
 107     return f;
 108 }
 109
 110 wxFontFace *
 111 wxFontBundleBase::GetFaceForFont(const wxFontMgrFontRefData& font) const
 112 {
 113     wxASSERT_MSG( font.GetFaceName().empty() || font.GetFaceName() == GetName(),
 114                   _T("calling GetFaceForFont for incompatible font") );
 115
 116     int type = FaceType_Regular;
 117
 118     if ( font.GetWeight() == wxBOLD )
 119         type |= FaceType_Bold;
 120
 121     // FIXME -- this should read "if ( font->GetStyle() == wxITALIC )",
 122     // but since MGL neither DFB supports slant, we try to display it with
 123     // italic face (better than nothing...)
 124     if ( font.GetStyle() == wxITALIC || font.GetStyle() == wxSLANT )
 125     {
 126         if ( HasFace((FaceType)(type | FaceType_Italic)) )
 127             type |= FaceType_Italic;
 128     }
 129
 130     if ( !HasFace((FaceType)type) )
 131     {
 132         for (int i = 0; i < FaceType_Max; i++)
 133         {
 134             if ( HasFace((FaceType)i) )
 135                 return GetFace((FaceType)i);
 136         }
 137
 138         wxFAIL_MSG( _T("no face") );
 139         return NULL;
 140     }
 141
 142     return GetFace((FaceType)type);
 143 }
 144
 145 // ----------------------------------------------------------------------------
 146 // wxFontsManagerBase
 147 // ----------------------------------------------------------------------------
 148
 149 wxFontsManager *wxFontsManagerBase::ms_instance = NULL;
 150
 151 wxFontsManagerBase::wxFontsManagerBase()
 152 {
 153     m_hash = new wxFontBundleHash();
 154     m_list = new wxFontBundleList;
 155     m_list->DeleteContents(true);
 156 }
 157
 158 wxFontsManagerBase::~wxFontsManagerBase()
 159 {
 160     delete m_hash;
 161     delete m_list;
 162 }
 163
 164 /* static */
 165 wxFontsManager *wxFontsManagerBase::Get()
 166 {
 167     if ( !ms_instance )
 168         ms_instance = new wxFontsManager();
 169     return ms_instance;
 170 }
 171
 172 /* static */
 173 void wxFontsManagerBase::CleanUp()
 174 {
 175     wxDELETE(ms_instance);
 176 }
 177
 178 wxFontBundle *wxFontsManagerBase::GetBundle(const wxString& name) const
 179 {
 180     return (*m_hash)[name.Lower()];
 181 }
 182
 183 wxFontBundle *
 184 wxFontsManagerBase::GetBundleForFont(const wxFontMgrFontRefData& font) const
 185 {
 186     wxFontBundle *bundle = NULL;
 187
 188     wxString facename = font.GetFaceName();
 189     if ( !facename.empty() )
 190         bundle = GetBundle(facename);
 191
 192     if ( !bundle )
 193     {
 194         facename = GetDefaultFacename((wxFontFamily)font.GetFamily());
 195         if ( !facename.empty() )
 196             bundle = GetBundle(facename);
 197     }
 198
 199     if ( !bundle )
 200     {
 201        if ( m_list->GetFirst() )
 202            bundle = m_list->GetFirst()->GetData();
 203        else
 204            wxFAIL_MSG(wxT("Fatal error, no fonts available!"));
 205     }
 206
 207     return bundle;
 208 }
 209
 210 void wxFontsManagerBase::AddBundle(wxFontBundle *bundle)
 211 {
 212     (*m_hash)[bundle->GetName().Lower()] = bundle;
 213     m_list->Append(bundle);
 214 }
 215
 216
 217 // ----------------------------------------------------------------------------
 218 // wxFontMgrFontRefData
 219 // ----------------------------------------------------------------------------
 220
 221 wxFontMgrFontRefData::wxFontMgrFontRefData(int size,
 222                                            int family,
 223                                            int style,
 224                                            int weight,
 225                                            bool underlined,
 226                                            const wxString& faceName,
 227                                            wxFontEncoding encoding)
 228 {
 229     if ( family == wxDEFAULT )
 230         family = wxSWISS;
 231     if ( style == wxDEFAULT )
 232         style = wxNORMAL;
 233     if ( weight == wxDEFAULT )
 234         weight = wxNORMAL;
 235     if ( size == wxDEFAULT )
 236         size = 12;
 237
 238     m_info.family = (wxFontFamily)family;
 239     m_info.faceName = faceName;
 240     m_info.style = (wxFontStyle)style;
 241     m_info.weight = (wxFontWeight)weight;
 242     m_info.pointSize = size;
 243     m_info.underlined = underlined;
 244     m_info.encoding = encoding;
 245
 246     m_noAA = false;
 247
 248     m_fontFace = NULL;
 249     m_fontBundle = NULL;
 250     m_fontValid = false;
 251 }
 252
 253 wxFontMgrFontRefData::wxFontMgrFontRefData(const wxFontMgrFontRefData& data)
 254 {
 255     m_info = data.m_info;
 256     m_noAA = data.m_noAA;
 257
 258     m_fontFace = data.m_fontFace;
 259     m_fontBundle = data.m_fontBundle;
 260     m_fontValid = data.m_fontValid;
 261     if ( m_fontFace )
 262         m_fontFace->Acquire();
 263 }
 264
 265 wxFontMgrFontRefData::~wxFontMgrFontRefData()
 266 {
 267     if ( m_fontFace )
 268         m_fontFace->Release();
 269 }
 270
 271 wxFontBundle *wxFontMgrFontRefData::GetFontBundle() const
 272 {
 273     wxConstCast(this, wxFontMgrFontRefData)->EnsureValidFont();
 274     return m_fontBundle;
 275 }
 276
 277 wxFontInstance *
 278 wxFontMgrFontRefData::GetFontInstance(float scale, bool antialiased) const
 279 {
 280     wxConstCast(this, wxFontMgrFontRefData)->EnsureValidFont();
 281     return m_fontFace->GetFontInstance(m_info.pointSize * scale,
 282                                        antialiased && !m_noAA);
 283 }
 284
 285 void wxFontMgrFontRefData::SetPointSize(int pointSize)
 286 {
 287     m_info.pointSize = pointSize;
 288     m_fontValid = false;
 289 }
 290
 291 void wxFontMgrFontRefData::SetFamily(int family)
 292 {
 293     m_info.family = (wxFontFamily)family;
 294     m_fontValid = false;
 295 }
 296
 297 void wxFontMgrFontRefData::SetStyle(int style)
 298 {
 299     m_info.style = (wxFontStyle)style;
 300     m_fontValid = false;
 301 }
 302
 303 void wxFontMgrFontRefData::SetWeight(int weight)
 304 {
 305     m_info.weight = (wxFontWeight)weight;
 306     m_fontValid = false;
 307 }
 308
 309 void wxFontMgrFontRefData::SetFaceName(const wxString& faceName)
 310 {
 311     m_info.faceName = faceName;
 312     m_fontValid = false;
 313 }
 314
 315 void wxFontMgrFontRefData::SetUnderlined(bool underlined)
 316 {
 317     m_info.underlined = underlined;
 318     m_fontValid = false;
 319 }
 320
 321 void wxFontMgrFontRefData::SetEncoding(wxFontEncoding encoding)
 322 {
 323     m_info.encoding = encoding;
 324     m_fontValid = false;
 325 }
 326
 327 void wxFontMgrFontRefData::SetNoAntiAliasing(bool no)
 328 {
 329     m_noAA = no;
 330 }
 331
 332
 333 void wxFontMgrFontRefData::EnsureValidFont()
 334 {
 335     if ( !m_fontValid )
 336     {
 337         wxFontFace *old = m_fontFace;
 338
 339         m_fontBundle = wxFontsManager::Get()->GetBundleForFont(*this);
 340         m_fontFace = m_fontBundle->GetFaceForFont(*this);
 341
 342         if ( old )
 343             old->Release();
 344     }
 345 }