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