src/os2/fontenum.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/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 #ifdef __GNUG__
  21     #pragma implementation "fontenum.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if wxUSE_FONTMAP
  28
  29 #ifndef WX_PRECOMP
  30   #include "wx/font.h"
  31 #endif
  32
  33 #include "wx/fontenum.h"
  34 #include "wx/fontmap.h"
  35
  36 #include "wx/os2/private.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // private classes
  40 // ----------------------------------------------------------------------------
  41
  42 class wxFontEnumeratorHelper
  43 {
  44 public:
  45     wxFontEnumeratorHelper(wxFontEnumerator *fontEnum);
  46
  47     // control what exactly are we enumerating
  48     bool SetEncoding(wxFontEncoding encoding);
  49     void SetFixedOnly(bool fixedOnly)
  50         { m_fixedOnly = fixedOnly; }
  51
  52     // call to start enumeration
  53     void DoEnumerate();
  54
  55     // called by our font enumeration proc
  56     bool OnFont(/*const LPLOGFONT lf, const LPTEXTMETRIC tm*/) const;
  57
  58 private:
  59     // the object we forward calls to OnFont() to
  60     wxFontEnumerator *m_fontEnum;
  61
  62     // if != -1, enum only fonts which have this encoding
  63     int m_charset;
  64
  65     // if not empty, enum only the fonts with this facename
  66     wxString m_facename;
  67
  68     // if TRUE, enum only fixed fonts
  69     bool m_fixedOnly;
  70 };
  71
  72 // ----------------------------------------------------------------------------
  73 // private functions
  74 // ----------------------------------------------------------------------------
  75
  76 // TODO:
  77 /*
  78 int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm,
  79                                   DWORD dwStyle, LONG lParam);
  80 */
  81
  82 // ============================================================================
  83 // implementation
  84 // ============================================================================
  85
  86 // ----------------------------------------------------------------------------
  87 // wxFontEnumeratorHelper
  88 // ----------------------------------------------------------------------------
  89
  90 wxFontEnumeratorHelper::wxFontEnumeratorHelper(wxFontEnumerator *fontEnum)
  91 {
  92     m_fontEnum = fontEnum;
  93     m_charset = -1;
  94     m_fixedOnly = FALSE;
  95 }
  96
  97 bool wxFontEnumeratorHelper::SetEncoding(wxFontEncoding encoding)
  98 {
  99     wxNativeEncodingInfo info;
 100     if ( !wxGetNativeFontEncoding(encoding, &info) )
 101     {
 102         if ( !wxTheFontMapper->GetAltForEncoding(encoding, &info) )
 103         {
 104             // no such encodings at all
 105             return FALSE;
 106         }
 107     }
 108     m_charset = info.charset;
 109     m_facename = info.facename;
 110
 111     return TRUE;
 112 }
 113
 114 #define wxFONTENUMPROC FONTENUMPROC
 115
 116 void wxFontEnumeratorHelper::DoEnumerate()
 117 {
 118    // TODO:
 119    /*
 120     HDC hDC = ::GetDC(NULL);
 121
 122 #ifdef __WIN32__
 123     LOGFONT lf;
 124     lf.lfCharSet = m_charset;
 125     wxStrncpy(lf.lfFaceName, m_facename, WXSIZEOF(lf.lfFaceName));
 126     lf.lfPitchAndFamily = 0;
 127     ::EnumFontFamiliesEx(hDC, &lf, (wxFONTENUMPROC)wxFontEnumeratorProc,
 128                          (LPARAM)this, 0) ;
 129 #else // Win16
 130     ::EnumFonts(hDC, (LPTSTR)NULL, (FONTENUMPROC)wxFontEnumeratorProc,
 131     #ifdef STRICT
 132                (LPARAM)
 133     #else
 134                (LPSTR)
 135     #endif
 136                this);
 137 #endif // Win32/16
 138
 139     ::ReleaseDC(NULL, hDC);
 140     */
 141 }
 142
 143 bool wxFontEnumeratorHelper::OnFont(/*const LPLOGFONT lf,
 144                                       const LPTEXTMETRIC tm */) const
 145 {
 146    // TODO:
 147    /*
 148     if ( m_fixedOnly )
 149     {
 150         // check that it's a fixed pitch font (there is *no* error here, the
 151         // flag name is misleading!)
 152         if ( tm->tmPitchAndFamily & TMPF_FIXED_PITCH )
 153         {
 154             // not a fixed pitch font
 155             return TRUE;
 156         }
 157     }
 158
 159     if ( m_charset != -1 )
 160     {
 161         // check that we have the right encoding
 162         if ( lf->lfCharSet != m_charset )
 163         {
 164             return TRUE;
 165         }
 166     }
 167
 168     return m_fontEnum->OnFacename(lf->lfFaceName);
 169    */
 170     return TRUE;
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // wxFontEnumerator
 175 // ----------------------------------------------------------------------------
 176
 177 bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding,
 178                                           bool fixedWidthOnly)
 179 {
 180     wxFontEnumeratorHelper fe(this);
 181     if ( fe.SetEncoding(encoding) )
 182     {
 183         fe.SetFixedOnly(fixedWidthOnly);
 184
 185         fe.DoEnumerate();
 186     }
 187     // else: no such fonts, unknown encoding
 188
 189     return TRUE;
 190 }
 191
 192 bool wxFontEnumerator::EnumerateEncodings(const wxString& family)
 193 {
 194     wxFAIL_MSG(wxT("TODO"));
 195
 196     return TRUE;
 197 }
 198
 199 // ----------------------------------------------------------------------------
 200 // Windows callbacks
 201 // ----------------------------------------------------------------------------
 202
 203 // TODO:
 204 /*
 205 int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm,
 206                                   DWORD dwStyle, LONG lParam)
 207 {
 208     // Get rid of any fonts that we don't want...
 209     if ( dwStyle != TRUETYPE_FONTTYPE )
 210     {
 211         // continue enumeration
 212         return TRUE;
 213     }
 214
 215     wxFontEnumeratorHelper *fontEnum = (wxFontEnumeratorHelper *)lParam;
 216
 217     return fontEnum->OnFont(lplf, lptm);
 218 }
 219 */
 220
 221 #endif // wxUSE_FONTMAP