added new stuff

[dwm.git] / font.c

diff --git a/font.c b/font.c
new file mode 100644 (file)
index 0000000..99301b5
--- /dev/null
+++ b/font.c
@@ -0,0 +1,81 @@
+/*
+ * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
+ * See LICENSE file for license details.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <locale.h>
+
+unsigned int
+textwidth_l(BlitzFont *font, char *text, unsigned int len)
+{
+       if(font->set) {
+               XRectangle r;
+               XmbTextExtents(font->set, text, len, nil, &r);
+               return r.width;
+       }
+       return XTextWidth(font->xfont, text, len);
+}
+
+unsigned int
+textwidth(BlitzFont *font, char *text)
+{
+       return blitz_textwidth_l(font, text, strlen(text));
+}
+
+void
+loadfont(Blitz *blitz, BlitzFont *font)
+{
+       char *fontname = font->fontstr;
+       char **missing = nil, *def = "?";
+       int n;
+
+       setlocale(LC_ALL, "");
+       if(font->set)
+               XFreeFontSet(blitz->dpy, font->set);
+       font->set = XCreateFontSet(blitz->dpy, fontname, &missing, &n, &def);
+       if(missing) {
+               while(n--)
+                       fprintf(stderr, "liblitz: missing fontset: %s\n", missing[n]);
+               XFreeStringList(missing);
+               if(font->set) {
+                       XFreeFontSet(blitz->dpy, font->set);
+                       font->set = nil;
+               }
+       }
+       if(font->set) {
+               XFontSetExtents *font_extents;
+               XFontStruct **xfonts;
+               char **font_names;
+               unsigned int i;
+
+               font->ascent = font->descent = 0;
+               font_extents = XExtentsOfFontSet(font->set);
+               n = XFontsOfFontSet(font->set, &xfonts, &font_names);
+               for(i = 0, font->ascent = 0, font->descent = 0; i < n; i++) {
+                       if(font->ascent < (*xfonts)->ascent)
+                               font->ascent = (*xfonts)->ascent;
+                       if(font->descent < (*xfonts)->descent)
+                               font->descent = (*xfonts)->descent;
+                       xfonts++;
+               }
+       }
+       else {
+               if(font->xfont)
+                       XFreeFont(blitz->dpy, font->xfont);
+               font->xfont = nil;
+               font->xfont = XLoadQueryFont(blitz->dpy, fontname);
+               if (!font->xfont) {
+                       fontname = "fixed";
+                       font->xfont = XLoadQueryFont(blitz->dpy, fontname);
+               }
+               if (!font->xfont) {
+                       fprintf(stderr, "%s", "liblitz: error, cannot load 'fixed' font\n");
+                       exit(1);
+               }
+               font->ascent = font->xfont->ascent;
+               font->descent = font->xfont->descent;
+       }
+}