wmii

git clone git://oldgit.suckless.org/wmii/
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drawstring.c (2079B)

      1 /* Copyright ©2007-2010 Kris Maglione <maglione.k at Gmail>
      2  * See LICENSE file for license details.
      3  */
      4 #include <string.h>
      5 #include "../x11.h"
      6 
      7 uint
      8 fillstring(Image *dst, Font *font,
      9 	   Rectangle r, Align align,
     10 	   const char *text, CTuple *col, int borderw) {
     11 
     12 	fill(dst, r, &col->bg);
     13 	if(borderw)
     14 		border(dst, r, borderw, &col->border);
     15 	return drawstring(dst, font, r, align, text, &col->fg);
     16 }
     17 
     18 uint
     19 drawstring(Image *dst, Font *font,
     20 	   Rectangle r, Align align,
     21 	   const char *text, Color *col) {
     22 	Rectangle tr;
     23 	char *buf;
     24 	uint x, y, width, height, len;
     25 	int shortened;
     26 
     27 	shortened = 0;
     28 
     29 	len = strlen(text);
     30 	buf = emalloc(len+1);
     31 	memcpy(buf, text, len+1);
     32 
     33 	r.max.y -= font->pad.min.y;
     34 	r.min.y += font->pad.max.y;
     35 
     36 	height = font->ascent + font->descent;
     37 	y = r.min.y + Dy(r) / 2 - height / 2 + font->ascent;
     38 
     39 	width = Dx(r) - font->pad.min.x - font->pad.max.x - (font->height & ~1);
     40 
     41 	r.min.x += font->pad.min.x;
     42 	r.max.x -= font->pad.max.x;
     43 
     44 	/* shorten text if necessary */
     45 	tr = ZR;
     46 	while(len > 0) {
     47 		tr = textextents_l(font, buf, len + min(shortened, 3), nil);
     48 		if(Dx(tr) <= width)
     49 			break;
     50 		while(len > 0 && (buf[--len]&0xC0) == 0x80)
     51 			buf[len] = '.';
     52 		buf[len] = '.';
     53 		shortened++;
     54 	}
     55 
     56 	if(len == 0 || Dx(tr) > width)
     57 		goto done;
     58 
     59 	/* mark shortened info in the string */
     60 	if(shortened)
     61 		len += min(shortened, 3);
     62 
     63 	switch (align) {
     64 	case East:
     65 		x = r.max.x - (tr.max.x + (font->height / 2));
     66 		break;
     67 	case Center:
     68 		x = r.min.x + (Dx(r) - Dx(tr)) / 2 - tr.min.x;
     69 		break;
     70 	default:
     71 		x = r.min.x + (font->height / 2) - tr.min.x;
     72 		break;
     73 	}
     74 
     75 	setgccol(dst, col);
     76 	switch(font->type) {
     77 	case FFontSet:
     78 		Xutf8DrawString(display, dst->xid,
     79 				font->font.set, dst->gc,
     80 				x, y,
     81 				buf, len);
     82 		break;
     83 	case FXft:
     84 		xft->drawstring(xftdrawable(dst), xftcolor(dst, col),
     85 				font->font.xft,
     86 				x, y, buf, len);
     87 		break;
     88 	case FX11:
     89 		XSetFont(display, dst->gc, font->font.x11->fid);
     90 		XDrawString(display, dst->xid, dst->gc,
     91 			    x, y, buf, len);
     92 		break;
     93 	default:
     94 		die("Invalid font type.");
     95 	}
     96 
     97 done:
     98 	free(buf);
     99 	return Dx(tr);
    100 }