1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 font.c for the Openbox window manager
4 Copyright (c) 2003 Ben Jansens
5 Copyright (c) 2003 Derek Foreman
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 See the COPYING file for a copy of the GNU General Public License.
26 #include <X11/Xft/Xft.h>
32 #define ELIPSES_LENGTH(font) \
33 (font->elipses_length + (font->shadow ? font->offset : 0))
35 #define OB_SHADOW "shadow"
36 #define OB_SHADOW_OFFSET "shadowoffset"
37 #define OB_SHADOW_ALPHA "shadowtint"
39 FcObjectType objs[] = {
40 { OB_SHADOW, FcTypeBool },
41 { OB_SHADOW_OFFSET, FcTypeInteger },
42 { OB_SHADOW_ALPHA, FcTypeInteger }
45 static gboolean started = FALSE;
47 static void font_startup(void)
50 g_warning(_("Couldn't initialize Xft."));
53 FcNameRegisterObjectTypes(objs, (sizeof(objs) / sizeof(objs[0])));
56 static void measure_font(RrFont *f)
60 /* measure an elipses */
61 XftTextExtentsUtf8(RrDisplay(f->inst), f->xftfont,
62 (FcChar8*)ELIPSES, strlen(ELIPSES), &info);
63 f->elipses_length = (signed) info.xOff;
66 static RrFont *openfont(const RrInstance *inst, char *fontstring)
69 FcPattern *pat, *match;
74 if (!(pat = XftNameParse(fontstring)))
77 match = XftFontMatch(RrDisplay(inst), RrScreen(inst), pat, &res);
78 FcPatternDestroy(pat);
82 out = g_new(RrFont, 1);
85 if (FcPatternGetBool(match, OB_SHADOW, 0, &out->shadow) != FcResultMatch)
88 if (FcPatternGetInteger(match, OB_SHADOW_OFFSET, 0, &out->offset) !=
92 if (FcPatternGetInteger(match, OB_SHADOW_ALPHA, 0, &tint) != FcResultMatch)
94 if (tint > 100) tint = 100;
95 else if (tint < -100) tint = -100;
98 font = XftFontOpenPattern(RrDisplay(inst), match);
100 FcPatternDestroy(match);
111 RrFont *RrFontOpen(const RrInstance *inst, char *fontstring)
120 if ((out = openfont(inst, fontstring)))
122 g_warning(_("Unable to load font: %s\n"), fontstring);
123 g_warning(_("Trying fallback font: %s\n"), "sans");
125 if ((out = openfont(inst, "sans")))
127 g_warning(_("Unable to load font: %s\n"), "sans");
132 void RrFontClose(RrFont *f)
135 XftFontClose(RrDisplay(f->inst), f->xftfont);
140 static void font_measure_full(const RrFont *f, const gchar *str,
145 XftTextExtentsUtf8(RrDisplay(f->inst), f->xftfont,
146 (const FcChar8*)str, strlen(str), &info);
148 *x = (signed) info.xOff + (f->shadow ? ABS(f->offset) : 0);
149 *y = info.height + (f->shadow ? ABS(f->offset) : 0);
152 int RrFontMeasureString(const RrFont *f, const gchar *str)
155 font_measure_full (f, str, &x, &y);
159 int RrFontHeight(const RrFont *f)
161 return f->xftfont->ascent + f->xftfont->descent +
162 (f->shadow ? f->offset : 0);
165 int RrFontMaxCharWidth(const RrFont *f)
167 return (signed) f->xftfont->max_advance_width;
170 void RrFontDraw(XftDraw *d, RrTextureText *t, RrRect *area)
177 gboolean shortened = FALSE;
179 /* center vertically */
181 (area->height - RrFontHeight(t->font)) / 2;
182 /* the +2 and -4 leave a small blank edge on the sides */
187 text = g_string_new(t->string);
188 l = g_utf8_strlen(text->str, -1);
189 font_measure_full(t->font, text->str, &mw, &mh);
190 while (l && mw > area->width) {
192 /* remove a character from the middle */
193 text = g_string_erase(text, l-- / 2, 1);
194 /* if the elipses are too large, don't show them at all */
195 if (ELIPSES_LENGTH(t->font) > area->width)
197 font_measure_full(t->font, text->str, &mw, &mh);
198 mw += ELIPSES_LENGTH(t->font);
201 text = g_string_insert(text, (l + 1) / 2, ELIPSES);
206 switch (t->justify) {
207 case RR_JUSTIFY_LEFT:
209 case RR_JUSTIFY_RIGHT:
212 case RR_JUSTIFY_CENTER:
217 l = strlen(text->str); /* number of bytes */
219 if (t->font->shadow) {
220 if (t->font->tint >= 0) {
224 c.color.alpha = 0xffff * t->font->tint / 100;
225 c.pixel = BlackPixel(RrDisplay(t->font->inst),
226 RrScreen(t->font->inst));
228 c.color.red = 0xffff;
229 c.color.green = 0xffff;
230 c.color.blue = 0xffff;
231 c.color.alpha = 0xffff * -t->font->tint / 100;
232 c.pixel = WhitePixel(RrDisplay(t->font->inst),
233 RrScreen(t->font->inst));
235 XftDrawStringUtf8(d, &c, t->font->xftfont, x + t->font->offset,
236 t->font->xftfont->ascent + y + t->font->offset,
237 (FcChar8*)text->str, l);
239 c.color.red = t->color->r | t->color->r << 8;
240 c.color.green = t->color->g | t->color->g << 8;
241 c.color.blue = t->color->b | t->color->b << 8;
242 c.color.alpha = 0xff | 0xff << 8; /* fully opaque text */
243 c.pixel = t->color->pixel;
245 XftDrawStringUtf8(d, &c, t->font->xftfont, x,
246 t->font->xftfont->ascent + y,
247 (FcChar8*)text->str, l);
249 g_string_free(text, TRUE);