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
  23 // ----------------------------------------------------------------------------
  24 // forward declarations
  25 // ----------------------------------------------------------------------------
  26
  27 class WXDLLEXPORT wxFontData;
  28 class WXDLLEXPORT wxFontBase;
  29 class WXDLLEXPORT wxFont;
  30 class WXDLLEXPORT wxSize;
  31
  32 // ----------------------------------------------------------------------------
  33 // font constants
  34 // ----------------------------------------------------------------------------
  35
  36 // standard font families: these may be used only for the font creation, it
  37 // doesn't make sense to query an existing font for its font family as,
  38 // especially if the font had been created from a native font description, it
  39 // may be unknown
  40 enum wxFontFamily
  41 {
  42     wxFONTFAMILY_DEFAULT = wxDEFAULT,
  43     wxFONTFAMILY_DECORATIVE = wxDECORATIVE,
  44     wxFONTFAMILY_ROMAN = wxROMAN,
  45     wxFONTFAMILY_SCRIPT = wxSCRIPT,
  46     wxFONTFAMILY_SWISS = wxSWISS,
  47     wxFONTFAMILY_MODERN = wxMODERN,
  48     wxFONTFAMILY_TELETYPE = wxTELETYPE,
  49     wxFONTFAMILY_MAX,
  50     wxFONTFAMILY_UNKNOWN = wxFONTFAMILY_MAX
  51 };
  52
  53 // font styles
  54 enum wxFontStyle
  55 {
  56     wxFONTSTYLE_NORMAL = wxNORMAL,
  57     wxFONTSTYLE_ITALIC = wxITALIC,
  58     wxFONTSTYLE_SLANT = wxSLANT,
  59     wxFONTSTYLE_MAX
  60 };
  61
  62 // font weights
  63 enum wxFontWeight
  64 {
  65     wxFONTWEIGHT_NORMAL = wxNORMAL,
  66     wxFONTWEIGHT_LIGHT = wxLIGHT,
  67     wxFONTWEIGHT_BOLD = wxBOLD,
  68     wxFONTWEIGHT_MAX
  69 };
  70
  71 // the font flag bits for the new font ctor accepting one combined flags word
  72 enum
  73 {
  74     // no special flags: font with default weight/slant/anti-aliasing
  75     wxFONTFLAG_DEFAULT          = 0,
  76
  77     // slant flags (default: no slant)
  78     wxFONTFLAG_ITALIC           = 1 << 0,
  79     wxFONTFLAG_SLANT            = 1 << 1,
  80
  81     // weight flags (default: medium)
  82     wxFONTFLAG_LIGHT            = 1 << 2,
  83     wxFONTFLAG_BOLD             = 1 << 3,
  84
  85     // anti-aliasing flag: force on or off (default: the current system default)
  86     wxFONTFLAG_ANTIALIASED      = 1 << 4,
  87     wxFONTFLAG_NOT_ANTIALIASED  = 1 << 5,
  88
  89     // underlined/strikethrough flags (default: no lines)
  90     wxFONTFLAG_UNDERLINED       = 1 << 6,
  91     wxFONTFLAG_STRIKETHROUGH    = 1 << 7,
  92
  93     // the mask of all currently used flags
  94     wxFONTFLAG_MASK = wxFONTFLAG_ITALIC             |
  95                       wxFONTFLAG_SLANT              |
  96                       wxFONTFLAG_LIGHT              |
  97                       wxFONTFLAG_BOLD               |
  98                       wxFONTFLAG_ANTIALIASED        |
  99                       wxFONTFLAG_NOT_ANTIALIASED    |
 100                       wxFONTFLAG_UNDERLINED         |
 101                       wxFONTFLAG_STRIKETHROUGH
 102 };
 103
 104 // ----------------------------------------------------------------------------
 105 // wxFontBase represents a font object
 106 // ----------------------------------------------------------------------------
 107
 108 class WXDLLEXPORT wxFontRefData;
 109 struct WXDLLEXPORT wxNativeFontInfo;
 110
 111 class WXDLLEXPORT 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     // was the font successfully created?
 160     bool Ok() const { return m_refData != NULL; }
 161
 162     // comparison
 163     bool operator == (const wxFont& font) const;
 164     bool operator != (const wxFont& font) const;
 165
 166     // accessors: get the font characteristics
 167     virtual int GetPointSize() const = 0;
 168     virtual wxSize GetPixelSize() const;
 169     virtual bool IsUsingSizeInPixels() const;
 170     virtual int GetFamily() const = 0;
 171     virtual int GetStyle() const = 0;
 172     virtual int GetWeight() const = 0;
 173     virtual bool GetUnderlined() const = 0;
 174     virtual wxString GetFaceName() const = 0;
 175     virtual wxFontEncoding GetEncoding() const = 0;
 176     virtual const wxNativeFontInfo *GetNativeFontInfo() const = 0;
 177
 178     virtual bool IsFixedWidth() const;
 179
 180     wxString GetNativeFontInfoDesc() const;
 181     wxString GetNativeFontInfoUserDesc() const;
 182
 183     // change the font characteristics
 184     virtual void SetPointSize( int pointSize ) = 0;
 185     virtual void SetPixelSize( const wxSize& pixelSize );
 186     virtual void SetFamily( int family ) = 0;
 187     virtual void SetStyle( int style ) = 0;
 188     virtual void SetWeight( int weight ) = 0;
 189     virtual void SetFaceName( const wxString& faceName ) = 0;
 190     virtual void SetUnderlined( bool underlined ) = 0;
 191     virtual void SetEncoding(wxFontEncoding encoding) = 0;
 192     void SetNativeFontInfo(const wxNativeFontInfo& info)
 193         { DoSetNativeFontInfo(info); }
 194
 195     void SetNativeFontInfo(const wxString& info);
 196     void SetNativeFontInfoUserDesc(const wxString& info);
 197
 198     // translate the fonts into human-readable string (i.e. GetStyleString()
 199     // will return "wxITALIC" for an italic font, ...)
 200     wxString GetFamilyString() const;
 201     wxString GetStyleString() const;
 202     wxString GetWeightString() const;
 203
 204     // Unofficial API, don't use
 205     virtual void SetNoAntiAliasing( bool WXUNUSED(no) = true ) {  }
 206     virtual bool GetNoAntiAliasing() const { return false; }
 207
 208     // the default encoding is used for creating all fonts with default
 209     // encoding parameter
 210     static wxFontEncoding GetDefaultEncoding() { return ms_encodingDefault; }
 211     static void SetDefaultEncoding(wxFontEncoding encoding);
 212
 213 protected:
 214     // get the internal data
 215     wxFontRefData *GetFontData() const
 216         { return (wxFontRefData *)m_refData; }
 217
 218     // the function called by both overloads of SetNativeFontInfo()
 219     virtual void DoSetNativeFontInfo(const wxNativeFontInfo& info);
 220
 221 private:
 222     // the currently default encoding: by default, it's the default system
 223     // encoding, but may be changed by the application using
 224     // SetDefaultEncoding() to make all subsequent fonts created without
 225     // specifying encoding parameter using this encoding
 226     static wxFontEncoding ms_encodingDefault;
 227 };
 228
 229 // include the real class declaration
 230 #if defined(__WXPALMOS__)
 231     #include "wx/palmos/font.h"
 232 #elif defined(__WXMSW__)
 233     #include "wx/msw/font.h"
 234 #elif defined(__WXMOTIF__)
 235     #include "wx/motif/font.h"
 236 #elif defined(__WXGTK20__)
 237     #include "wx/gtk/font.h"
 238 #elif defined(__WXGTK__)
 239     #include "wx/gtk1/font.h"
 240 #elif defined(__WXX11__)
 241     #include "wx/x11/font.h"
 242 #elif defined(__WXMGL__)
 243     #include "wx/mgl/font.h"
 244 #elif defined(__WXMAC__)
 245     #include "wx/mac/font.h"
 246 #elif defined(__WXCOCOA__)
 247     #include "wx/cocoa/font.h"
 248 #elif defined(__WXPM__)
 249     #include "wx/os2/font.h"
 250 #endif
 251
 252 // ----------------------------------------------------------------------------
 253 // macros
 254 // ----------------------------------------------------------------------------
 255
 256 #define M_FONTDATA GetFontData()
 257
 258 #endif
 259     // _WX_FONT_H_BASE_