src/os2/fontenum.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/os2/fontenum.cpp
   3 // Purpose:     wxFontEnumerator class for Windows
   4 // Author:      Julian Smart
   5 // Modified by: David Webster to add support for font encodings
   6 // Created:     01/03/00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #if wxUSE_FONTMAP
  24
  25 #include "wx/fontenum.h"
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/font.h"
  29 #endif
  30
  31 #include "wx/fontmap.h"
  32 #include "wx/encinfo.h"
  33
  34 #include "wx/os2/private.h"
  35
  36 // ----------------------------------------------------------------------------
  37 // private classes
  38 // ----------------------------------------------------------------------------
  39
  40 class wxFontEnumeratorHelper
  41 {
  42 public:
  43     wxFontEnumeratorHelper(wxFontEnumerator *fontEnum);
  44
  45     // control what exactly are we enumerating
  46     bool SetEncoding(wxFontEncoding encoding);
  47     void SetFixedOnly(bool fixedOnly)
  48         { m_fixedOnly = fixedOnly; }
  49
  50     // call to start enumeration
  51     void DoEnumerate();
  52
  53     // called by our font enumeration proc
  54     bool OnFont(/*const LPLOGFONT lf, const LPTEXTMETRIC tm*/) const;
  55
  56 private:
  57     // the object we forward calls to OnFont() to
  58     wxFontEnumerator *m_fontEnum;
  59
  60     // if != -1, enum only fonts which have this encoding
  61     int m_charset;
  62
  63     // if not empty, enum only the fonts with this facename
  64     wxString m_facename;
  65
  66     // if true, enum only fixed fonts
  67     bool m_fixedOnly;
  68 };
  69
  70 // ----------------------------------------------------------------------------
  71 // private functions
  72 // ----------------------------------------------------------------------------
  73
  74 // TODO:
  75 /*
  76 int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm,
  77                                   DWORD dwStyle, LONG lParam);
  78 */
  79
  80 // ============================================================================
  81 // implementation
  82 // ============================================================================
  83
  84 // ----------------------------------------------------------------------------
  85 // wxFontEnumeratorHelper
  86 // ----------------------------------------------------------------------------
  87
  88 wxFontEnumeratorHelper::wxFontEnumeratorHelper(wxFontEnumerator *fontEnum)
  89 {
  90     m_fontEnum = fontEnum;
  91     m_charset = -1;
  92     m_fixedOnly = FALSE;
  93 }
  94
  95 bool wxFontEnumeratorHelper::SetEncoding(wxFontEncoding encoding)
  96 {
  97     wxNativeEncodingInfo info;
  98     if ( !wxGetNativeFontEncoding(encoding, &info) )
  99     {
 100         if ( !wxFontMapper::Get()->GetAltForEncoding(encoding, &info) )
 101         {
 102             // no such encodings at all
 103             return FALSE;
 104         }
 105     }
 106     m_charset = info.charset;
 107     m_facename = info.facename;
 108
 109     return true;
 110 }
 111
 112 #define wxFONTENUMPROC FONTENUMPROC
 113
 114 void wxFontEnumeratorHelper::DoEnumerate()
 115 {
 116    // TODO:
 117    /*
 118     HDC hDC = ::GetDC(NULL);
 119
 120 #ifdef __WIN32__
 121     LOGFONT lf;
 122     lf.lfCharSet = m_charset;
 123     wxStrncpy(lf.lfFaceName, m_facename, WXSIZEOF(lf.lfFaceName));
 124     lf.lfPitchAndFamily = 0;
 125     ::EnumFontFamiliesEx(hDC, &lf, (wxFONTENUMPROC)wxFontEnumeratorProc,
 126                          (LPARAM)this, 0) ;
 127 #else // Win16
 128     ::EnumFonts(hDC, (LPTSTR)NULL, (FONTENUMPROC)wxFontEnumeratorProc,
 129     #ifdef STRICT
 130                (LPARAM)
 131     #else
 132                (LPSTR)
 133     #endif
 134                this);
 135 #endif // Win32/16
 136
 137     ::ReleaseDC(NULL, hDC);
 138     */
 139 }
 140
 141 bool wxFontEnumeratorHelper::OnFont(/*const LPLOGFONT lf,
 142                                       const LPTEXTMETRIC tm */) const
 143 {
 144    // TODO:
 145    /*
 146     if ( m_fixedOnly )
 147     {
 148         // check that it's a fixed pitch font (there is *no* error here, the
 149         // flag name is misleading!)
 150         if ( tm->tmPitchAndFamily & TMPF_FIXED_PITCH )
 151         {
 152             // not a fixed pitch font
 153             return true;
 154         }
 155     }
 156
 157     if ( m_charset != -1 )
 158     {
 159         // check that we have the right encoding
 160         if ( lf->lfCharSet != m_charset )
 161         {
 162             return true;
 163         }
 164     }
 165
 166     return m_fontEnum->OnFacename(lf->lfFaceName);
 167    */
 168     return true;
 169 }
 170
 171 // ----------------------------------------------------------------------------
 172 // wxFontEnumerator
 173 // ----------------------------------------------------------------------------
 174
 175 bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding,
 176                                           bool fixedWidthOnly)
 177 {
 178     wxFontEnumeratorHelper fe(this);
 179     if ( fe.SetEncoding(encoding) )
 180     {
 181         fe.SetFixedOnly(fixedWidthOnly);
 182
 183         fe.DoEnumerate();
 184     }
 185     // else: no such fonts, unknown encoding
 186
 187     return true;
 188 }
 189
 190 bool wxFontEnumerator::EnumerateEncodings(const wxString& WXUNUSED(family))
 191 {
 192     wxFAIL_MSG(wxT("TODO"));
 193
 194     return true;
 195 }
 196
 197 // ----------------------------------------------------------------------------
 198 // Windows callbacks
 199 // ----------------------------------------------------------------------------
 200
 201 // TODO:
 202 /*
 203 int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm,
 204                                   DWORD dwStyle, LONG lParam)
 205 {
 206     // Get rid of any fonts that we don't want...
 207     if ( dwStyle != TRUETYPE_FONTTYPE )
 208     {
 209         // continue enumeration
 210         return TRUE;
 211     }
 212
 213     wxFontEnumeratorHelper *fontEnum = (wxFontEnumeratorHelper *)lParam;
 214
 215     return fontEnum->OnFont(lplf, lptm);
 216 }
 217 */
 218
 219 #endif // wxUSE_FONTMAP