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

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef    HAVE_CONFIG_H
   4 #  include "../config.h"
   5 #endif // HAVE_CONFIG_H
   6
   7 extern "C" {
   8 #ifdef HAVE_STDLIB_H
   9 #  include <stdlib.h>
  10 #endif // HAVE_STDLIB_H
  11 }
  12
  13 #include "font.hh"
  14 #include "display.hh"
  15 #include "color.hh"
  16 #include "screeninfo.hh"
  17
  18 extern "C" {
  19 #ifdef    HAVE_STDIO_H
  20 #  include <stdio.h>
  21 #endif // HAVE_STDIO_H
  22
  23 #include "gettext.h"
  24 #define _(str) gettext(str)
  25 }
  26
  27 namespace otk {
  28
  29 std::string Font::_fallback_font = "fixed";
  30 bool        Font::_xft_init      = false;
  31
  32 Font::Font(int screen_num, const std::string &fontstring,
  33              bool shadow, unsigned char offset, unsigned char tint)
  34   : _screen_num(screen_num),
  35     _fontstring(fontstring),
  36     _shadow(shadow),
  37     _offset(offset),
  38     _tint(tint),
  39     _xftfont(0)
  40 {
  41   assert(screen_num >= 0);
  42   assert(tint <= CHAR_MAX);
  43
  44   if (!_xft_init) {
  45     if (!XftInit(0)) {
  46       printf(_("Couldn't initialize Xft.\n\n"));
  47       ::exit(3);
  48     }
  49     int version = XftGetVersion();
  50     printf(_("Using Xft %d.%d.%d.\n"),
  51            version / 10000 % 100, version / 100 % 100, version % 100);
  52     _xft_init = true;
  53   }
  54
  55   if ((_xftfont = XftFontOpenName(Display::display, _screen_num,
  56                                   _fontstring.c_str())))
  57     return;
  58
  59   printf(_("Unable to load font: %s\n"), _fontstring.c_str());
  60   printf(_("Trying fallback font: %s\n"), _fallback_font.c_str());
  61
  62   if ((_xftfont = XftFontOpenName(Display::display, _screen_num,
  63                                   _fallback_font.c_str())))
  64     return;
  65
  66   printf(_("Unable to load font: %s\n"), _fallback_font.c_str());
  67   printf(_("Aborting!.\n"));
  68
  69   ::exit(3); // can't continue without a font
  70 }
  71
  72
  73 Font::~Font(void)
  74 {
  75   if (_xftfont)
  76     XftFontClose(Display::display, _xftfont);
  77 }
  78
  79
  80 void Font::drawString(XftDraw *d, int x, int y, const Color &color,
  81                        const userstring &string) const
  82 {
  83   assert(d);
  84
  85   if (_shadow) {
  86     XftColor c;
  87     c.color.red = 0;
  88     c.color.green = 0;
  89     c.color.blue = 0;
  90     c.color.alpha = _tint | _tint << 8; // transparent shadow
  91     c.pixel = BlackPixel(Display::display, _screen_num);
  92
  93     if (string.utf8())
  94       XftDrawStringUtf8(d, &c, _xftfont, x + _offset,
  95                         _xftfont->ascent + y + _offset,
  96                         (FcChar8*)string.c_str(), string.size());
  97     else
  98       XftDrawString8(d, &c, _xftfont, x + _offset,
  99                      _xftfont->ascent + y + _offset,
 100                      (FcChar8*)string.c_str(), string.size());
 101   }
 102
 103   XftColor c;
 104   c.color.red = color.red() | color.red() << 8;
 105   c.color.green = color.green() | color.green() << 8;
 106   c.color.blue = color.blue() | color.blue() << 8;
 107   c.pixel = color.pixel();
 108   c.color.alpha = 0xff | 0xff << 8; // no transparency in Color yet
 109
 110   if (string.utf8())
 111     XftDrawStringUtf8(d, &c, _xftfont, x, _xftfont->ascent + y,
 112                       (FcChar8*)string.c_str(), string.size());
 113   else
 114     XftDrawString8(d, &c, _xftfont, x, _xftfont->ascent + y,
 115                    (FcChar8*)string.c_str(), string.size());
 116
 117   return;
 118 }
 119
 120
 121 unsigned int Font::measureString(const userstring &string) const
 122 {
 123   XGlyphInfo info;
 124
 125   if (string.utf8())
 126     XftTextExtentsUtf8(Display::display, _xftfont,
 127                        (FcChar8*)string.c_str(), string.size(), &info);
 128   else
 129     XftTextExtents8(Display::display, _xftfont,
 130                     (FcChar8*)string.c_str(), string.size(), &info);
 131
 132   return info.xOff + (_shadow ? _offset : 0);
 133 }
 134
 135
 136 unsigned int Font::height(void) const
 137 {
 138   return _xftfont->height + (_shadow ? _offset : 0);
 139 }
 140
 141
 142 unsigned int Font::maxCharWidth(void) const
 143 {
 144   return _xftfont->max_advance_width;
 145 }
 146
 147 }