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() ||
 114                   GetName().CmpNoCase(font.GetFaceName()) == 0,
 115                   _T("calling GetFaceForFont for incompatible font") );
 116
 117     int type = FaceType_Regular;
 118
 119     if ( font.GetWeight() == wxBOLD )
 120         type |= FaceType_Bold;
 121
 122     // FIXME -- this should read "if ( font->GetStyle() == wxITALIC )",
 123     // but since MGL neither DFB supports slant, we try to display it with
 124     // italic face (better than nothing...)
 125     if ( font.GetStyle() == wxITALIC || font.GetStyle() == wxSLANT )
 126     {
 127         if ( HasFace((FaceType)(type | FaceType_Italic)) )
 128             type |= FaceType_Italic;
 129     }
 130
 131     if ( !HasFace((FaceType)type) )
 132     {
 133         for (int i = 0; i < FaceType_Max; i++)
 134         {
 135             if ( HasFace((FaceType)i) )
 136                 return GetFace((FaceType)i);
 137         }
 138
 139         wxFAIL_MSG( _T("no face") );
 140         return NULL;
 141     }
 142
 143     return GetFace((FaceType)type);
 144 }
 145
 146 // ----------------------------------------------------------------------------
 147 // wxFontsManagerBase
 148 // ----------------------------------------------------------------------------
 149
 150 wxFontsManager *wxFontsManagerBase::ms_instance = NULL;
 151
 152 wxFontsManagerBase::wxFontsManagerBase()
 153 {
 154     m_hash = new wxFontBundleHash();
 155     m_list = new wxFontBundleList;
 156     m_list->DeleteContents(true);
 157 }
 158
 159 wxFontsManagerBase::~wxFontsManagerBase()
 160 {
 161     delete m_hash;
 162     delete m_list;
 163 }
 164
 165 /* static */
 166 wxFontsManager *wxFontsManagerBase::Get()
 167 {
 168     if ( !ms_instance )
 169         ms_instance = new wxFontsManager();
 170     return ms_instance;
 171 }
 172
 173 /* static */
 174 void wxFontsManagerBase::CleanUp()
 175 {
 176     wxDELETE(ms_instance);
 177 }
 178
 179 wxFontBundle *wxFontsManagerBase::GetBundle(const wxString& name) const
 180 {
 181     return (*m_hash)[name.Lower()];
 182 }
 183
 184 wxFontBundle *
 185 wxFontsManagerBase::GetBundleForFont(const wxFontMgrFontRefData& font) const
 186 {
 187     wxFontBundle *bundle = NULL;
 188
 189     wxString facename = font.GetFaceName();
 190     if ( !facename.empty() )
 191         bundle = GetBundle(facename);
 192
 193     if ( !bundle )
 194     {
 195         facename = GetDefaultFacename((wxFontFamily)font.GetFamily());
 196         if ( !facename.empty() )
 197             bundle = GetBundle(facename);
 198     }
 199
 200     if ( !bundle )
 201     {
 202        if ( m_list->GetFirst() )
 203            bundle = m_list->GetFirst()->GetData();
 204        else
 205            wxFAIL_MSG(wxT("Fatal error, no fonts available!"));
 206     }
 207
 208     return bundle;
 209 }
 210
 211 void wxFontsManagerBase::AddBundle(wxFontBundle *bundle)
 212 {
 213     (*m_hash)[bundle->GetName().Lower()] = bundle;
 214     m_list->Append(bundle);
 215 }
 216
 217
 218 // ----------------------------------------------------------------------------
 219 // wxFontMgrFontRefData
 220 // ----------------------------------------------------------------------------
 221
 222 wxFontMgrFontRefData::wxFontMgrFontRefData(int size,
 223                                            int family,
 224                                            int style,
 225                                            int weight,
 226                                            bool underlined,
 227                                            const wxString& faceName,
 228                                            wxFontEncoding encoding)
 229 {
 230     if ( family == wxDEFAULT )
 231         family = wxSWISS;
 232     if ( style == wxDEFAULT )
 233         style = wxNORMAL;
 234     if ( weight == wxDEFAULT )
 235         weight = wxNORMAL;
 236     if ( size == wxDEFAULT )
 237         size = 12;
 238
 239     m_info.family = (wxFontFamily)family;
 240     m_info.faceName = faceName;
 241     m_info.style = (wxFontStyle)style;
 242     m_info.weight = (wxFontWeight)weight;
 243     m_info.pointSize = size;
 244     m_info.underlined = underlined;
 245     m_info.encoding = encoding;
 246
 247     m_noAA = false;
 248
 249     m_fontFace = NULL;
 250     m_fontBundle = NULL;
 251     m_fontValid = false;
 252 }
 253
 254 wxFontMgrFontRefData::wxFontMgrFontRefData(const wxFontMgrFontRefData& data)
 255 {
 256     m_info = data.m_info;
 257     m_noAA = data.m_noAA;
 258
 259     m_fontFace = data.m_fontFace;
 260     m_fontBundle = data.m_fontBundle;
 261     m_fontValid = data.m_fontValid;
 262     if ( m_fontFace )
 263         m_fontFace->Acquire();
 264 }
 265
 266 wxFontMgrFontRefData::~wxFontMgrFontRefData()
 267 {
 268     if ( m_fontFace )
 269         m_fontFace->Release();
 270 }
 271
 272 wxFontBundle *wxFontMgrFontRefData::GetFontBundle() const
 273 {
 274     wxConstCast(this, wxFontMgrFontRefData)->EnsureValidFont();
 275     return m_fontBundle;
 276 }
 277
 278 wxFontInstance *
 279 wxFontMgrFontRefData::GetFontInstance(float scale, bool antialiased) const
 280 {
 281     wxConstCast(this, wxFontMgrFontRefData)->EnsureValidFont();
 282     return m_fontFace->GetFontInstance(m_info.pointSize * scale,
 283                                        antialiased && !m_noAA);
 284 }
 285
 286 void wxFontMgrFontRefData::SetPointSize(int pointSize)
 287 {
 288     m_info.pointSize = pointSize;
 289     m_fontValid = false;
 290 }
 291
 292 void wxFontMgrFontRefData::SetFamily(int family)
 293 {
 294     m_info.family = (wxFontFamily)family;
 295     m_fontValid = false;
 296 }
 297
 298 void wxFontMgrFontRefData::SetStyle(int style)
 299 {
 300     m_info.style = (wxFontStyle)style;
 301     m_fontValid = false;
 302 }
 303
 304 void wxFontMgrFontRefData::SetWeight(int weight)
 305 {
 306     m_info.weight = (wxFontWeight)weight;
 307     m_fontValid = false;
 308 }
 309
 310 void wxFontMgrFontRefData::SetFaceName(const wxString& faceName)
 311 {
 312     m_info.faceName = faceName;
 313     m_fontValid = false;
 314 }
 315
 316 void wxFontMgrFontRefData::SetUnderlined(bool underlined)
 317 {
 318     m_info.underlined = underlined;
 319     m_fontValid = false;
 320 }
 321
 322 void wxFontMgrFontRefData::SetEncoding(wxFontEncoding encoding)
 323 {
 324     m_info.encoding = encoding;
 325     m_fontValid = false;
 326 }
 327
 328 void wxFontMgrFontRefData::SetNoAntiAliasing(bool no)
 329 {
 330     m_noAA = no;
 331 }
 332
 333
 334 void wxFontMgrFontRefData::EnsureValidFont()
 335 {
 336     if ( !m_fontValid )
 337     {
 338         wxFontFace *old = m_fontFace;
 339
 340         m_fontBundle = wxFontsManager::Get()->GetBundleForFont(*this);
 341         m_fontFace = m_fontBundle->GetFaceForFont(*this);
 342
 343         if ( old )
 344             old->Release();
 345     }
 346 }