1/*
 2 * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
 3 * See LICENSE file for license details.
 4 */
 5
 6#include <stdio.h>
 7#include <stdlib.h>
 8#include <string.h>
 9#include <locale.h>
10
11unsigned int
12textwidth_l(BlitzFont *font, char *text, unsigned int len)
13{
14	if(font->set) {
15		XRectangle r;
16		XmbTextExtents(font->set, text, len, nil, &r);
17		return r.width;
18	}
19	return XTextWidth(font->xfont, text, len);
20}
21
22unsigned int
23textwidth(BlitzFont *font, char *text)
24{
25	return blitz_textwidth_l(font, text, strlen(text));
26}
27
28void
29loadfont(Blitz *blitz, BlitzFont *font)
30{
31	char *fontname = font->fontstr;
32	char **missing = nil, *def = "?";
33	int n;
34
35	setlocale(LC_ALL, "");
36	if(font->set)
37		XFreeFontSet(blitz->dpy, font->set);
38	font->set = XCreateFontSet(blitz->dpy, fontname, &missing, &n, &def);
39	if(missing) {
40		while(n--)
41			fprintf(stderr, "missing fontset: %s\n", missing[n]);
42		XFreeStringList(missing);
43		if(font->set) {
44			XFreeFontSet(blitz->dpy, font->set);
45			font->set = nil;
46		}
47	}
48	if(font->set) {
49		XFontSetExtents *font_extents;
50		XFontStruct **xfonts;
51		char **font_names;
52		unsigned int i;
53
54		font->ascent = font->descent = 0;
55		font_extents = XExtentsOfFontSet(font->set);
56		n = XFontsOfFontSet(font->set, &xfonts, &font_names);
57		for(i = 0, font->ascent = 0, font->descent = 0; i < n; i++) {
58			if(font->ascent < (*xfonts)->ascent)
59				font->ascent = (*xfonts)->ascent;
60			if(font->descent < (*xfonts)->descent)
61				font->descent = (*xfonts)->descent;
62			xfonts++;
63		}
64	}
65	else {
66		if(font->xfont)
67			XFreeFont(blitz->dpy, font->xfont);
68		font->xfont = nil;
69		font->xfont = XLoadQueryFont(blitz->dpy, fontname);
70		if (!font->xfont) {
71			fontname = "fixed";
72			font->xfont = XLoadQueryFont(blitz->dpy, fontname);
73		}
74		if (!font->xfont) {
75			fprintf(stderr, "%s", "error, cannot load 'fixed' font\n");
76			exit(1);
77		}
78		font->ascent = font->xfont->ascent;
79		font->descent = font->xfont->descent;
80	}
81}