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