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 #include "userstring.hh"
   6
   7 extern "C" {
   8 #include <X11/Xlib.h>
   9 #define _XFT_NO_COMPAT_ // no Xft 1 API
  10 #include <X11/Xft/Xft.h>
  11 }
  12
  13 #include <assert.h>
  14
  15 #include <string>
  16
  17 namespace otk {
  18
  19 class Color;
  20
  21 class Font {
  22   /*
  23    * static members
  24    */
  25 private:
  26   static std::string  _fallback_font;
  27   static bool         _xft_init;
  28
  29 public:
  30   // the fallback is only used for X fonts, not for Xft fonts, since it is
  31   // assumed that X fonts will be the fallback from Xft.
  32   inline static std::string fallbackFont(void) { return _fallback_font; }
  33   inline static void setFallbackFont(const std::string &f)
  34     { _fallback_font = f; }
  35
  36   /*
  37    * instance members
  38    */
  39 private:
  40   int               _screen_num;
  41
  42   std::string       _fontstring;
  43
  44   bool              _shadow;
  45   unsigned char     _offset;
  46   unsigned char     _tint;
  47
  48   XftFont          *_xftfont;
  49
  50   bool createXftFont(void);
  51
  52 public:
  53   // loads an Xft font
  54   Font(int screen_num, const std::string &fontstring, bool shadow,
  55         unsigned char offset, unsigned char tint);
  56   virtual ~Font();
  57
  58   inline const std::string &fontstring() const { return _fontstring; }
  59
  60   unsigned int height() const;
  61   unsigned int maxCharWidth() const;
  62
  63   //! Measures the length of a string
  64   /*!
  65     @param string The string to measure, it should be UTF8 encoded.
  66   */
  67   unsigned int measureString(const userstring &string) const;
  68
  69   //! Draws a string into an XftDraw object
  70   /*!
  71     Be Warned: If you use an XftDraw object and a color, or a font from
  72     different screens, you WILL have unpredictable results! :)
  73     @param d The drawable to render into.
  74     @param x The X offset onto the drawable at which to start drawing.
  75     @param x The Y offset onto the drawable at which to start drawing.
  76     @param color The color to use for drawing the text.
  77     @param string The string to draw, it should be UTF8 encoded.
  78   */
  79   void drawString(XftDraw *d, int x, int y, const Color &color,
  80                   const userstring &string) const;
  81 };
  82
  83 }
  84
  85 #endif // __font_hh