include/wx/font.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/font.h
   3 // Purpose:     wxFontBase class: the interface of wxFont
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     20.09.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_FONT_H_BASE_
  13 #define _WX_FONT_H_BASE_
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 #include "wx/defs.h"        // for wxDEFAULT &c
  20 #include "wx/fontenc.h"     // the font encoding constants
  21 #include "wx/gdiobj.h"      // the base class
  22 #include "wx/gdicmn.h"      // for wxGDIObjListBase
  23
  24 // ----------------------------------------------------------------------------
  25 // forward declarations
  26 // ----------------------------------------------------------------------------
  27
  28 class WXDLLIMPEXP_FWD_CORE wxFontData;
  29 class WXDLLIMPEXP_FWD_CORE wxFontBase;
  30 class WXDLLIMPEXP_FWD_CORE wxFont;
  31 class WXDLLIMPEXP_FWD_CORE wxSize;
  32
  33 // ----------------------------------------------------------------------------
  34 // font constants
  35 // ----------------------------------------------------------------------------
  36
  37 // standard font families: these may be used only for the font creation, it
  38 // doesn't make sense to query an existing font for its font family as,
  39 // especially if the font had been created from a native font description, it
  40 // may be unknown
  41 enum wxFontFamily
  42 {
  43     wxFONTFAMILY_DEFAULT = wxDEFAULT,
  44     wxFONTFAMILY_DECORATIVE = wxDECORATIVE,
  45     wxFONTFAMILY_ROMAN = wxROMAN,
  46     wxFONTFAMILY_SCRIPT = wxSCRIPT,
  47     wxFONTFAMILY_SWISS = wxSWISS,
  48     wxFONTFAMILY_MODERN = wxMODERN,
  49     wxFONTFAMILY_TELETYPE = wxTELETYPE,
  50     wxFONTFAMILY_MAX,
  51     wxFONTFAMILY_UNKNOWN = wxFONTFAMILY_MAX
  52 };
  53
  54 // font styles
  55 enum wxFontStyle
  56 {
  57     wxFONTSTYLE_NORMAL = wxNORMAL,
  58     wxFONTSTYLE_ITALIC = wxITALIC,
  59     wxFONTSTYLE_SLANT = wxSLANT,
  60     wxFONTSTYLE_MAX
  61 };
  62
  63 // font weights
  64 enum wxFontWeight
  65 {
  66     wxFONTWEIGHT_NORMAL = wxNORMAL,
  67     wxFONTWEIGHT_LIGHT = wxLIGHT,
  68     wxFONTWEIGHT_BOLD = wxBOLD,
  69     wxFONTWEIGHT_MAX
  70 };
  71
  72 // the font flag bits for the new font ctor accepting one combined flags word
  73 enum
  74 {
  75     // no special flags: font with default weight/slant/anti-aliasing
  76     wxFONTFLAG_DEFAULT          = 0,
  77
  78     // slant flags (default: no slant)
  79     wxFONTFLAG_ITALIC           = 1 << 0,
  80     wxFONTFLAG_SLANT            = 1 << 1,
  81
  82     // weight flags (default: medium)
  83     wxFONTFLAG_LIGHT            = 1 << 2,
  84     wxFONTFLAG_BOLD             = 1 << 3,
  85
  86     // anti-aliasing flag: force on or off (default: the current system default)
  87     wxFONTFLAG_ANTIALIASED      = 1 << 4,
  88     wxFONTFLAG_NOT_ANTIALIASED  = 1 << 5,
  89
  90     // underlined/strikethrough flags (default: no lines)
  91     wxFONTFLAG_UNDERLINED       = 1 << 6,
  92     wxFONTFLAG_STRIKETHROUGH    = 1 << 7,
  93
  94     // the mask of all currently used flags
  95     wxFONTFLAG_MASK = wxFONTFLAG_ITALIC             |
  96                       wxFONTFLAG_SLANT              |
  97                       wxFONTFLAG_LIGHT              |
  98                       wxFONTFLAG_BOLD               |
  99                       wxFONTFLAG_ANTIALIASED        |
 100                       wxFONTFLAG_NOT_ANTIALIASED    |
 101                       wxFONTFLAG_UNDERLINED         |
 102                       wxFONTFLAG_STRIKETHROUGH
 103 };
 104
 105 // ----------------------------------------------------------------------------
 106 // wxFontBase represents a font object
 107 // ----------------------------------------------------------------------------
 108
 109 class WXDLLIMPEXP_FWD_CORE wxNativeFontInfo;
 110
 111 class WXDLLIMPEXP_CORE wxFontBase : public wxGDIObject
 112 {
 113 public:
 114     // creator function
 115     virtual ~wxFontBase();
 116
 117     // from the font components
 118     static wxFont *New(
 119         int pointSize,              // size of the font in points
 120         int family,                 // see wxFontFamily enum
 121         int style,                  // see wxFontStyle enum
 122         int weight,                 // see wxFontWeight enum
 123         bool underlined = false,    // not underlined by default
 124         const wxString& face = wxEmptyString,              // facename
 125         wxFontEncoding encoding = wxFONTENCODING_DEFAULT); // ISO8859-X, ...
 126
 127     // from the font components but using the font flags instead of separate
 128     // parameters for each flag
 129     static wxFont *New(int pointSize,
 130                        wxFontFamily family,
 131                        int flags = wxFONTFLAG_DEFAULT,
 132                        const wxString& face = wxEmptyString,
 133                        wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
 134
 135     // from the font components
 136     static wxFont *New(
 137         const wxSize& pixelSize,    // size of the font in pixels
 138         int family,                 // see wxFontFamily enum
 139         int style,                  // see wxFontStyle enum
 140         int weight,                 // see wxFontWeight enum
 141         bool underlined = false,    // not underlined by default
 142         const wxString& face = wxEmptyString,              // facename
 143         wxFontEncoding encoding = wxFONTENCODING_DEFAULT); // ISO8859-X, ...
 144
 145     // from the font components but using the font flags instead of separate
 146     // parameters for each flag
 147     static wxFont *New(const wxSize& pixelSize,
 148                        wxFontFamily family,
 149                        int flags = wxFONTFLAG_DEFAULT,
 150                        const wxString& face = wxEmptyString,
 151                        wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
 152
 153     // from the (opaque) native font description object
 154     static wxFont *New(const wxNativeFontInfo& nativeFontDesc);
 155
 156     // from the string representation of wxNativeFontInfo
 157     static wxFont *New(const wxString& strNativeFontDesc);
 158
 159     // comparison
 160     bool operator==(const wxFont& font) const;
 161     bool operator!=(const wxFont& font) const { return !(*this == font); }
 162
 163     // accessors: get the font characteristics
 164     virtual int GetPointSize() const = 0;
 165     virtual wxSize GetPixelSize() const;
 166     virtual bool IsUsingSizeInPixels() const;
 167     virtual int GetFamily() const = 0;
 168     virtual int GetStyle() const = 0;
 169     virtual int GetWeight() const = 0;
 170     virtual bool GetUnderlined() const = 0;
 171     virtual wxString GetFaceName() const = 0;
 172     virtual wxFontEncoding GetEncoding() const = 0;
 173     virtual const wxNativeFontInfo *GetNativeFontInfo() const = 0;
 174
 175     virtual bool IsFixedWidth() const;
 176
 177     wxString GetNativeFontInfoDesc() const;
 178     wxString GetNativeFontInfoUserDesc() const;
 179
 180     // change the font characteristics
 181     virtual void SetPointSize( int pointSize ) = 0;
 182     virtual void SetPixelSize( const wxSize& pixelSize );
 183     virtual void SetFamily( int family ) = 0;
 184     virtual void SetStyle( int style ) = 0;
 185     virtual void SetWeight( int weight ) = 0;
 186     virtual void SetUnderlined( bool underlined ) = 0;
 187     virtual void SetEncoding(wxFontEncoding encoding) = 0;
 188     virtual bool SetFaceName( const wxString& faceName );
 189     void SetNativeFontInfo(const wxNativeFontInfo& info)
 190         { DoSetNativeFontInfo(info); }
 191
 192     bool SetNativeFontInfo(const wxString& info);
 193     bool SetNativeFontInfoUserDesc(const wxString& info);
 194
 195     // translate the fonts into human-readable string (i.e. GetStyleString()
 196     // will return "wxITALIC" for an italic font, ...)
 197     wxString GetFamilyString() const;
 198     wxString GetStyleString() const;
 199     wxString GetWeightString() const;
 200
 201     // Unofficial API, don't use
 202     virtual void SetNoAntiAliasing( bool WXUNUSED(no) = true ) {  }
 203     virtual bool GetNoAntiAliasing() const { return false; }
 204
 205     // the default encoding is used for creating all fonts with default
 206     // encoding parameter
 207     static wxFontEncoding GetDefaultEncoding() { return ms_encodingDefault; }
 208     static void SetDefaultEncoding(wxFontEncoding encoding);
 209
 210 protected:
 211     // the function called by both overloads of SetNativeFontInfo()
 212     virtual void DoSetNativeFontInfo(const wxNativeFontInfo& info);
 213
 214 private:
 215     // the currently default encoding: by default, it's the default system
 216     // encoding, but may be changed by the application using
 217     // SetDefaultEncoding() to make all subsequent fonts created without
 218     // specifying encoding parameter using this encoding
 219     static wxFontEncoding ms_encodingDefault;
 220 };
 221
 222 // wxFontBase <-> wxString utilities, used by wxConfig
 223 WXDLLIMPEXP_CORE wxString wxToString(const wxFontBase& font);
 224 WXDLLIMPEXP_CORE bool wxFromString(const wxString& str, wxFontBase* font);
 225
 226
 227
 228 // include the real class declaration
 229 #if defined(__WXPALMOS__)
 230     #include "wx/palmos/font.h"
 231 #elif defined(__WXMSW__)
 232     #include "wx/msw/font.h"
 233 #elif defined(__WXMOTIF__)
 234     #include "wx/motif/font.h"
 235 #elif defined(__WXGTK20__)
 236     #include "wx/gtk/font.h"
 237 #elif defined(__WXGTK__)
 238     #include "wx/gtk1/font.h"
 239 #elif defined(__WXX11__)
 240     #include "wx/x11/font.h"
 241 #elif defined(__WXMGL__)
 242     #include "wx/mgl/font.h"
 243 #elif defined(__WXDFB__)
 244     #include "wx/dfb/font.h"
 245 #elif defined(__WXMAC__)
 246     #include "wx/mac/font.h"
 247 #elif defined(__WXCOCOA__)
 248     #include "wx/cocoa/font.h"
 249 #elif defined(__WXPM__)
 250     #include "wx/os2/font.h"
 251 #endif
 252
 253 class WXDLLIMPEXP_CORE wxFontList: public wxGDIObjListBase
 254 {
 255 public:
 256     wxFont *FindOrCreateFont(int pointSize,
 257                              wxFontFamily family,
 258                              wxFontStyle style,
 259                              wxFontWeight weight,
 260                              bool underline = false,
 261                              const wxString& face = wxEmptyString,
 262                              wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
 263
 264 #if FUTURE_WXWIN_COMPATIBILITY_3_0
 265      wxFont *FindOrCreateFont(int pointSize, int family, int style, int weight,
 266                               bool underline = false,
 267                               const wxString& face = wxEmptyString,
 268                               wxFontEncoding encoding = wxFONTENCODING_DEFAULT)
 269         { return FindOrCreateFont(pointSize, (wxFontFamily)family, (wxFontStyle)style,
 270                                   (wxFontWeight)weight, underline, face, encoding); }
 271 #endif
 272
 273 #if WXWIN_COMPATIBILITY_2_6
 274     wxDEPRECATED( void AddFont(wxFont*) );
 275     wxDEPRECATED( void RemoveFont(wxFont*) );
 276 #endif
 277 };
 278
 279 extern WXDLLIMPEXP_DATA_CORE(wxFontList*)    wxTheFontList;
 280
 281 #endif
 282     // _WX_FONT_H_BASE_