docs/latex/wx/fontmap.tex

   1 %
   2 % automatically generated by HelpGen from
   3 % fontmap.h at 10/Mar/00 23:54:16
   4 %
   5
   6 \section{\class{wxFontMapper}}\label{wxfontmapper}
   7
   8 wxFontMapper manages user-definable correspondence between logical font
   9 names and the fonts present on the machine.
  10
  11 The default implementations of all functions will ask the user if they are
  12 not capable of finding the answer themselves and store the answer in a
  13 config file (configurable via SetConfigXXX functions). This behaviour may
  14 be disabled by giving the value of false to "interactive" parameter.
  15
  16 However, the functions will always consult the config file to allow the
  17 user-defined values override the default logic and there is no way to
  18 disable this - which shouldn't be ever needed because if "interactive" was
  19 never true, the config file is never created anyhow.
  20
  21 In case everything else fails (i.e. there is no record in config file
  22 and "interactive" is false or user denied to choose any replacement),
  23 the class queries \helpref{wxEncodingConverter}{wxencodingconverter}
  24 for "equivalent" encodings (e.g. iso8859-2 and cp1250) and tries them.
  25
  26 \wxheading{Using wxFontMapper in conjunction with wxMBConv classes}
  27
  28 If you need to display text in encoding which is not available at
  29 host system (see \helpref{IsEncodingAvailable}{wxfontmapperisencodingavailable}),
  30 you may use these two classes to find font in some similar encoding
  31 (see \helpref{GetAltForEncoding}{wxfontmappergetaltforencoding})
  32 and convert the text to this encoding
  33 (\helpref{wxMBConv classes}{mbconvclasses}).
  34
  35 Following code snippet demonstrates it:
  36
  37 \begin{verbatim}
  38 if (!wxFontMapper::Get()->IsEncodingAvailable(enc, facename))
  39 {
  40    wxFontEncoding alternative;
  41    if (wxFontMapper::Get()->GetAltForEncoding(enc, &alternative,
  42                                               facename, false))
  43    {
  44        wxCSConv convFrom(wxFontMapper::Get()->GetEncodingName(enc));
  45        wxCSConv convTo(wxFontMapper::Get()->GetEncodingName(alternative));
  46        text = wxString(text.mb_str(convFrom), convTo);
  47    }
  48    else
  49        ...failure (or we may try iso8859-1/7bit ASCII)...
  50 }
  51 ...display text...
  52 \end{verbatim}
  53
  54
  55 \wxheading{Derived from}
  56
  57 No base class
  58
  59 \wxheading{Include files}
  60
  61 <wx/fontmap.h>
  62
  63 \wxheading{See also}
  64
  65 \helpref{wxEncodingConverter}{wxencodingconverter},
  66 \helpref{Writing non-English applications}{nonenglishoverview}
  67
  68 \latexignore{\rtfignore{\wxheading{Members}}}
  69
  70
  71 \membersection{wxFontMapper::wxFontMapper}\label{wxfontmapperwxfontmapper}
  72
  73 \func{}{wxFontMapper}{\void}
  74
  75 Default ctor.
  76
  77 \wxheading{Note}
  78
  79 The preferred way of creating a wxFontMapper instance is to call
  80 \helpref{wxFontMapper::Get}{wxfontmapperget}.
  81
  82
  83 \membersection{wxFontMapper::\destruct{wxFontMapper}}\label{wxfontmapperdtor}
  84
  85 \func{}{\destruct{wxFontMapper}}{\void}
  86
  87 Virtual dtor for a base class.
  88
  89
  90 \membersection{wxFontMapper::CharsetToEncoding}\label{wxfontmappercharsettoencoding}
  91
  92 \func{wxFontEncoding}{CharsetToEncoding}{\param{const wxString\& }{charset}, \param{bool }{interactive = true}}
  93
  94 Returns the encoding for the given charset (in the form of RFC 2046) or
  95 \texttt{wxFONTENCODING\_SYSTEM} if couldn't decode it.
  96
  97 Be careful when using this function with \arg{interactive} set to \true
  98 (default value) as the function then may show a dialog box to the user which
  99 may lead to unexpected reentrancies and may also take a significantly longer
 100 time than a simple function call. For these reasons, it is almost always a bad
 101 idea to call this function from the event handlers for repeatedly generated
 102 events such as \texttt{EVT\_PAINT}.
 103
 104
 105 \membersection{wxFontMapper::Get}\label{wxfontmapperget}
 106
 107 \func{static wxFontMapper *}{Get}{\void}
 108
 109 Get the current font mapper object. If there is no current object, creates
 110 one.
 111
 112 \wxheading{See also}
 113
 114 \helpref{wxFontMapper::Set}{wxfontmapperset}
 115
 116
 117 \membersection{wxFontMapper::GetAllEncodingNames}\label{wxfontmappergetallencodingnames}
 118
 119 \func{static const wxChar**}{GetAllEncodingNames}{\param{wxFontEncoding }{encoding}}
 120
 121 Returns the array of all possible names for the given encoding. The array is
 122 \NULL-terminated. IF it isn't empty, the first name in it is the canonical
 123 encoding name, i.e. the same string as returned by
 124 \helpref{GetEncodingName()}{wxfontmappergetencodingname}.
 125
 126
 127 \membersection{wxFontMapper::GetAltForEncoding}\label{wxfontmappergetaltforencoding}
 128
 129 \func{bool}{GetAltForEncoding}{\param{wxFontEncoding }{encoding}, \param{wxNativeEncodingInfo* }{info}, \param{const wxString\& }{facename = wxEmptyString}, \param{bool }{interactive = true}}
 130
 131 \func{bool}{GetAltForEncoding}{\param{wxFontEncoding }{encoding}, \param{wxFontEncoding* }{alt\_encoding}, \param{const wxString\& }{facename = wxEmptyString}, \param{bool }{interactive = true}}
 132
 133 Find an alternative for the given encoding (which is supposed to not be
 134 available on this system). If successful, return true and fill info
 135 structure with the parameters required to create the font, otherwise
 136 return false.
 137
 138 The first form is for wxWidgets' internal use while the second one
 139 is better suitable for general use -- it returns wxFontEncoding which
 140 can consequently be passed to wxFont constructor.
 141
 142
 143 \membersection{wxFontMapper::GetEncoding}\label{wxfontmappergetencoding}
 144
 145 \func{static wxFontEncoding}{GetEncoding}{\param{size\_t }{n}}
 146
 147 Returns the {\it n}-th supported encoding. Together with
 148 \helpref{GetSupportedEncodingsCount()}{wxfontmappergetsupportedencodingscount}
 149 this method may be used to get all supported encodings.
 150
 151
 152 \membersection{wxFontMapper::GetEncodingDescription}\label{wxfontmappergetencodingdescription}
 153
 154 \func{static wxString}{GetEncodingDescription}{\param{wxFontEncoding }{encoding}}
 155
 156 Return user-readable string describing the given encoding.
 157
 158
 159 \membersection{wxFontMapper::GetEncodingFromName}\label{wxfontmappergetencodingfromname}
 160
 161 \func{static wxFontEncoding}{GetEncodingFromName}{\param{const wxString\& }{encoding}}
 162
 163 Return the encoding corresponding to the given internal name. This function is
 164 the inverse of \helpref{GetEncodingName}{wxfontmappergetencodingname} and is
 165 intentionally less general than
 166 \helpref{CharsetToEncoding}{wxfontmappercharsettoencoding}, i.e. it doesn't
 167 try to make any guesses nor ever asks the user. It is meant just as a way of
 168 restoring objects previously serialized using
 169 \helpref{GetEncodingName}{wxfontmappergetencodingname}.
 170
 171
 172 \membersection{wxFontMapper::GetEncodingName}\label{wxfontmappergetencodingname}
 173
 174 \func{static wxString}{GetEncodingName}{\param{wxFontEncoding }{encoding}}
 175
 176 Return internal string identifier for the encoding (see also
 177 \helpref{GetEncodingDescription()}{wxfontmappergetencodingdescription})
 178
 179 \wxheading{See also}
 180
 181 \helpref{GetEncodingFromName}{wxfontmappergetencodingfromname}
 182
 183
 184 \membersection{wxFontMapper::GetSupportedEncodingsCount}\label{wxfontmappergetsupportedencodingscount}
 185
 186 \func{static size\_t}{GetSupportedEncodingsCount}{\void}
 187
 188 Returns the number of the font encodings supported by this class. Together with
 189 \helpref{GetEncoding}{wxfontmappergetencoding} this method may be used to get
 190 all supported encodings.
 191
 192
 193 \membersection{wxFontMapper::IsEncodingAvailable}\label{wxfontmapperisencodingavailable}
 194
 195 \func{bool}{IsEncodingAvailable}{\param{wxFontEncoding }{encoding}, \param{const wxString\& }{facename = wxEmptyString}}
 196
 197 Check whether given encoding is available in given face or not.
 198 If no facename is given, find {\it any} font in this encoding.
 199
 200
 201 \membersection{wxFontMapper::SetDialogParent}\label{wxfontmappersetdialogparent}
 202
 203 \func{void}{SetDialogParent}{\param{wxWindow* }{parent}}
 204
 205 The parent window for modal dialogs.
 206
 207
 208 \membersection{wxFontMapper::SetDialogTitle}\label{wxfontmappersetdialogtitle}
 209
 210 \func{void}{SetDialogTitle}{\param{const wxString\& }{title}}
 211
 212 The title for the dialogs (note that default is quite reasonable).
 213
 214
 215 \membersection{wxFontMapper::Set}\label{wxfontmapperset}
 216
 217 \func{static wxFontMapper *}{Set}{\param{wxFontMapper *}{mapper}}
 218
 219 Set the current font mapper object and return previous one (may be NULL).
 220 This method is only useful if you want to plug-in an alternative font mapper
 221 into wxWidgets.
 222
 223 \wxheading{See also}
 224
 225 \helpref{wxFontMapper::Get}{wxfontmapperget}
 226
 227
 228 \membersection{wxFontMapper::SetConfig}\label{wxfontmappersetconfig}
 229
 230 \func{void}{SetConfig}{\param{wxConfigBase* }{config}}
 231
 232 Set the config object to use (may be NULL to use default).
 233
 234 By default, the global one (from wxConfigBase::Get() will be used)
 235 and the default root path for the config settings is the string returned by
 236 GetDefaultConfigPath().
 237
 238
 239 \membersection{wxFontMapper::SetConfigPath}\label{wxfontmappersetconfigpath}
 240
 241 \func{void}{SetConfigPath}{\param{const wxString\& }{prefix}}
 242
 243 Set the root config path to use (should be an absolute path).
 244