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 <string.h>
  8
  9#include <X11/Xlocale.h>
 10
 11#include "wm.h"
 12
 13static void
 14drawborder(Brush *b)
 15{
 16	XPoint points[5];
 17	XSetLineAttributes(dpy, b->gc, 1, LineSolid, CapButt, JoinMiter);
 18	XSetForeground(dpy, b->gc, b->border);
 19	points[0].x = b->x;
 20	points[0].y = b->y;
 21	points[1].x = b->w - 1;
 22	points[1].y = 0;
 23	points[2].x = 0;
 24	points[2].y = b->h - 1;
 25	points[3].x = -(b->w - 1);
 26	points[3].y = 0;
 27	points[4].x = 0;
 28	points[4].y = -(b->h - 1);
 29	XDrawLines(dpy, b->drawable, b->gc, points, 5, CoordModePrevious);
 30}
 31
 32void
 33draw(Brush *b, Bool border, const char *text)
 34{
 35	int x, y, w, h;
 36	unsigned int len;
 37	static char buf[256];
 38	XGCValues gcv;
 39	XRectangle r = { b->x, b->y, b->w, b->h };
 40
 41	XSetForeground(dpy, b->gc, b->bg);
 42	XFillRectangles(dpy, b->drawable, b->gc, &r, 1);
 43
 44	w = 0;
 45	if(border)
 46		drawborder(b);
 47
 48	if(!text)
 49		return;
 50
 51	len = strlen(text);
 52	if(len >= sizeof(buf))
 53		len = sizeof(buf) - 1;
 54	memcpy(buf, text, len);
 55	buf[len] = 0;
 56
 57	h = b->font.ascent + b->font.descent;
 58	y = b->y + (b->h / 2) - (h / 2) + b->font.ascent;
 59	x = b->x + (h / 2);
 60
 61	/* shorten text if necessary */
 62	while(len && (w = textnw(&b->font, buf, len)) > b->w - h)
 63		buf[--len] = 0;
 64
 65	if(w > b->w)
 66		return; /* too long */
 67
 68	gcv.foreground = b->fg;
 69	gcv.background = b->bg;
 70	if(b->font.set) {
 71		XChangeGC(dpy, b->gc, GCForeground | GCBackground, &gcv);
 72		XmbDrawImageString(dpy, b->drawable, b->font.set, b->gc,
 73				x, y, buf, len);
 74	}
 75	else {
 76		gcv.font = b->font.xfont->fid;
 77		XChangeGC(dpy, b->gc, GCForeground | GCBackground | GCFont, &gcv);
 78		XDrawImageString(dpy, b->drawable, b->gc, x, y, buf, len);
 79	}
 80}
 81
 82static unsigned long
 83xloadcolors(Colormap cmap, const char *colstr)
 84{
 85	XColor color;
 86	XAllocNamedColor(dpy, cmap, colstr, &color, &color);
 87	return color.pixel;
 88}
 89
 90void
 91loadcolors(int scr, Brush *b,
 92		const char *bg, const char *fg, const char *border)
 93{
 94	Colormap cmap = DefaultColormap(dpy, scr);
 95	b->bg = xloadcolors(cmap, bg);
 96	b->fg = xloadcolors(cmap, fg);
 97	b->border = xloadcolors(cmap, border);
 98}
 99
100unsigned int
101textnw(Fnt *font, char *text, unsigned int len)
102{
103	XRectangle r;
104	if(font->set) {
105		XmbTextExtents(font->set, text, len, NULL, &r);
106		return r.width;
107	}
108	return XTextWidth(font->xfont, text, len);
109}
110
111unsigned int
112textw(Fnt *font, char *text)
113{
114	return textnw(font, text, strlen(text));
115}
116
117unsigned int
118texth(Fnt *font)
119{
120	return font->height + 4;
121}
122
123void
124loadfont(Fnt *font, const char *fontstr)
125{
126	char **missing, *def;
127	int i, n;
128
129	missing = NULL;
130	setlocale(LC_ALL, "");
131	if(font->set)
132		XFreeFontSet(dpy, font->set);
133	font->set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
134	if(missing) {
135		while(n--)
136			fprintf(stderr, "missing fontset: %s\n", missing[n]);
137		XFreeStringList(missing);
138		if(font->set) {
139			XFreeFontSet(dpy, font->set);
140			font->set = NULL;
141		}
142	}
143	if(font->set) {
144		XFontSetExtents *font_extents;
145		XFontStruct **xfonts;
146		char **font_names;
147
148		font->ascent = font->descent = 0;
149		font_extents = XExtentsOfFontSet(font->set);
150		n = XFontsOfFontSet(font->set, &xfonts, &font_names);
151		for(i = 0, font->ascent = 0, font->descent = 0; i < n; i++) {
152			if(font->ascent < (*xfonts)->ascent)
153				font->ascent = (*xfonts)->ascent;
154			if(font->descent < (*xfonts)->descent)
155				font->descent = (*xfonts)->descent;
156			xfonts++;
157		}
158	}
159	else {
160		if(font->xfont)
161			XFreeFont(dpy, font->xfont);
162		font->xfont = NULL;
163		font->xfont = XLoadQueryFont(dpy, fontstr);
164		if (!font->xfont)
165			font->xfont = XLoadQueryFont(dpy, "fixed");
166		if (!font->xfont)
167			error("error, cannot load 'fixed' font\n");
168		font->ascent = font->xfont->ascent;
169		font->descent = font->xfont->descent;
170	}
171	font->height = font->ascent + font->descent;
172}