Dogcows Code - chaz/openbox/blob - otk/font.hh

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 #ifndef   __font_hh
   3 #define   __font_hh
   4
   5 extern "C" {
   6 #include <X11/Xlib.h>
   7 #define _XFT_NO_COMPAT_ // no Xft 1 API
   8 #include <X11/Xft/Xft.h>
   9 }
  10
  11 #include <assert.h>
  12 #include <string>
  13
  14 namespace otk {
  15
  16 class Color;
  17
  18 class Font {
  19   /*
  20    * static members
  21    */
  22 private:
  23   static std::string  _fallback_font;
  24   static bool         _xft_init;
  25
  26 public:
  27   // the fallback is only used for X fonts, not for Xft fonts, since it is
  28   // assumed that X fonts will be the fallback from Xft.
  29   inline static std::string fallbackFont(void) { return _fallback_font; }
  30   inline static void setFallbackFont(const std::string &f)
  31     { _fallback_font = f; }
  32
  33   /*
  34    * instance members
  35    */
  36 private:
  37   int               _screen_num;
  38
  39   std::string       _fontstring;
  40
  41   bool              _shadow;
  42   unsigned char     _offset;
  43   unsigned char     _tint;
  44
  45   XftFont          *_xftfont;
  46
  47   bool createXftFont(void);
  48
  49 public:
  50   // loads an Xft font
  51   Font(int screen_num, const std::string &fontstring, bool shadow,
  52         unsigned char offset, unsigned char tint);
  53   virtual ~Font();
  54
  55   inline const std::string &fontstring() const { return _fontstring; }
  56
  57   unsigned int height() const;
  58   unsigned int maxCharWidth() const;
  59
  60   unsigned int measureString(const std::string &string,
  61                              bool utf8 = true) const;
  62
  63   //! Draws a string into an XftDraw object
  64   /*!
  65     Be Warned: If you use an XftDraw object and a color, or a font from
  66     different screens, you WILL have unpredictable results! :)
  67   */
  68   void drawString(XftDraw *d, int x, int y, const Color &color,
  69                   const std::string &string, bool utf8 = true) const;
  70 };
  71
  72 }
  73
  74 #endif // __font_hh