garbeam@2: /*
garbeam@2:  * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
garbeam@2:  * See LICENSE file for license details.
garbeam@2:  */
garbeam@2: 
garbeam@2: #include <stdio.h>
garbeam@2: #include <stdlib.h>
garbeam@2: #include <string.h>
garbeam@2: #include <locale.h>
garbeam@2: 
garbeam@2: unsigned int
garbeam@2: textwidth_l(BlitzFont *font, char *text, unsigned int len)
garbeam@2: {
garbeam@2: 	if(font->set) {
garbeam@2: 		XRectangle r;
garbeam@2: 		XmbTextExtents(font->set, text, len, nil, &r);
garbeam@2: 		return r.width;
garbeam@2: 	}
garbeam@2: 	return XTextWidth(font->xfont, text, len);
garbeam@2: }
garbeam@2: 
garbeam@2: unsigned int
garbeam@2: textwidth(BlitzFont *font, char *text)
garbeam@2: {
garbeam@2: 	return blitz_textwidth_l(font, text, strlen(text));
garbeam@2: }
garbeam@2: 
garbeam@2: void
garbeam@2: loadfont(Blitz *blitz, BlitzFont *font)
garbeam@2: {
garbeam@2: 	char *fontname = font->fontstr;
garbeam@2: 	char **missing = nil, *def = "?";
garbeam@2: 	int n;
garbeam@2: 
garbeam@2: 	setlocale(LC_ALL, "");
garbeam@2: 	if(font->set)
garbeam@2: 		XFreeFontSet(blitz->dpy, font->set);
garbeam@2: 	font->set = XCreateFontSet(blitz->dpy, fontname, &missing, &n, &def);
garbeam@2: 	if(missing) {
garbeam@2: 		while(n--)
garbeam@9: 			fprintf(stderr, "missing fontset: %s\n", missing[n]);
garbeam@2: 		XFreeStringList(missing);
garbeam@2: 		if(font->set) {
garbeam@2: 			XFreeFontSet(blitz->dpy, font->set);
garbeam@2: 			font->set = nil;
garbeam@2: 		}
garbeam@2: 	}
garbeam@2: 	if(font->set) {
garbeam@2: 		XFontSetExtents *font_extents;
garbeam@2: 		XFontStruct **xfonts;
garbeam@2: 		char **font_names;
garbeam@2: 		unsigned int i;
garbeam@2: 
garbeam@2: 		font->ascent = font->descent = 0;
garbeam@2: 		font_extents = XExtentsOfFontSet(font->set);
garbeam@2: 		n = XFontsOfFontSet(font->set, &xfonts, &font_names);
garbeam@2: 		for(i = 0, font->ascent = 0, font->descent = 0; i < n; i++) {
garbeam@2: 			if(font->ascent < (*xfonts)->ascent)
garbeam@2: 				font->ascent = (*xfonts)->ascent;
garbeam@2: 			if(font->descent < (*xfonts)->descent)
garbeam@2: 				font->descent = (*xfonts)->descent;
garbeam@2: 			xfonts++;
garbeam@2: 		}
garbeam@2: 	}
garbeam@2: 	else {
garbeam@2: 		if(font->xfont)
garbeam@2: 			XFreeFont(blitz->dpy, font->xfont);
garbeam@2: 		font->xfont = nil;
garbeam@2: 		font->xfont = XLoadQueryFont(blitz->dpy, fontname);
garbeam@2: 		if (!font->xfont) {
garbeam@2: 			fontname = "fixed";
garbeam@2: 			font->xfont = XLoadQueryFont(blitz->dpy, fontname);
garbeam@2: 		}
garbeam@2: 		if (!font->xfont) {
garbeam@9: 			fprintf(stderr, "%s", "error, cannot load 'fixed' font\n");
garbeam@2: 			exit(1);
garbeam@2: 		}
garbeam@2: 		font->ascent = font->xfont->ascent;
garbeam@2: 		font->descent = font->xfont->descent;
garbeam@2: 	}
garbeam@2: }