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

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #include "config.h"
   4
   5 #include <cstdlib>
   6 #include <iostream>
   7 #include <algorithm>
   8
   9 #include "font.hh"
  10 #include "surface.hh"
  11 #include "util.hh"
  12 #include "display.hh"
  13 #include "screeninfo.hh"
  14
  15 extern "C" {
  16 #ifdef    HAVE_STDIO_H
  17 #  include <stdio.h>
  18 #endif // HAVE_STDIO_H
  19
  20 #include "../src/gettext.h"
  21 #define _(str) gettext(str)
  22 }
  23
  24 namespace otk {
  25
  26 std::string Font::_fallback_font = "fixed";
  27 bool        Font::_xft_init      = false;
  28
  29 Font::Font(int screen_num, const std::string &fontstring,
  30              bool shadow, unsigned char offset, unsigned char tint)
  31   : _screen_num(screen_num),
  32     _fontstring(fontstring),
  33     _shadow(shadow),
  34     _offset(offset),
  35     _tint(tint),
  36     _xftfont(0)
  37 {
  38   assert(screen_num >= 0);
  39   assert(tint <= CHAR_MAX);
  40
  41   if (!_xft_init) {
  42     if (!XftInit(0)) {
  43       printf(_("Couldn't initialize Xft.\n\n"));
  44       ::exit(3);
  45     }
  46     int version = XftGetVersion();
  47     printf(_("Using Xft %d.%d.%d (Built against %d.%d.%d).\n"),
  48            version / 10000 % 100, version / 100 % 100, version % 100,
  49            XFT_MAJOR, XFT_MINOR, XFT_REVISION);
  50     _xft_init = true;
  51   }
  52
  53   if ((_xftfont = XftFontOpenName(**display, _screen_num,
  54                                   _fontstring.c_str())))
  55     return;
  56
  57   printf(_("Unable to load font: %s\n"), _fontstring.c_str());
  58   printf(_("Trying fallback font: %s\n"), _fallback_font.c_str());
  59
  60   if ((_xftfont = XftFontOpenName(**display, _screen_num,
  61                                   _fallback_font.c_str())))
  62     return;
  63
  64   printf(_("Unable to load font: %s\n"), _fallback_font.c_str());
  65   printf(_("Aborting!.\n"));
  66
  67   ::exit(3); // can't continue without a font
  68 }
  69
  70
  71 Font::~Font(void)
  72 {
  73   if (_xftfont)
  74     XftFontClose(**display, _xftfont);
  75 }
  76
  77
  78 int Font::measureString(const ustring &string) const
  79 {
  80   XGlyphInfo info;
  81
  82   if (string.utf8())
  83     XftTextExtentsUtf8(**display, _xftfont,
  84                        (FcChar8*)string.c_str(), string.bytes(), &info);
  85   else
  86     XftTextExtents8(**display, _xftfont,
  87                     (FcChar8*)string.c_str(), string.bytes(), &info);
  88
  89   return (signed) info.xOff + (_shadow ? _offset : 0);
  90 }
  91
  92
  93 int Font::height(void) const
  94 {
  95   return (signed) _xftfont->height + (_shadow ? _offset : 0);
  96 }
  97
  98
  99 int Font::maxCharWidth(void) const
 100 {
 101   return (signed) _xftfont->max_advance_width;
 102 }
 103
 104 }