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/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
 * See LICENSE file for license details.
 */
#include "dwm.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <unistd.h>

/* extern */

void *
emallocz(unsigned int size) {
	void *res = calloc(1, size);

	if(!res)
		eprint("fatal: could not malloc() %u bytes\n", size);
	return res;
}

void
eprint(const char *errstr, ...) {
	va_list ap;

	va_start(ap, errstr);
	vfprintf(stderr, errstr, ap);
	va_end(ap);
	exit(EXIT_FAILURE);
}

void
spawn(const char *arg) {
	static char *shell = NULL;

	if(!shell && !(shell = getenv("SHELL")))
		shell = "/bin/sh";
	if(!arg)
		return;
	/* The double-fork construct avoids zombie processes and keeps the code
	 * clean from stupid signal handlers. */
	if(fork() == 0) {
		if(fork() == 0) {
			if(dpy)
				close(ConnectionNumber(dpy));
			setsid();
			execl(shell, shell, "-c", arg, (char *)NULL);
			fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
			perror(" failed");
		}
		exit(0);
	}
	wait(0);
}
pan>len, NULL, &r); return r.width; } return XTextWidth(dc.font.xfont, text, len); } static void drawtext(const char *text, Bool invert) { int x, y, w, h; static char buf[256]; unsigned int len, olen; XGCValues gcv; XPoint points[5]; XRectangle r = { dc.x, dc.y, dc.w, dc.h }; XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg); XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1); XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter); XSetForeground(dpy, dc.gc, dc.border); points[0].x = dc.x; points[0].y = dc.y; points[1].x = dc.w - 1; points[1].y = 0; points[2].x = 0; points[2].y = dc.h - 1; points[3].x = -(dc.w - 1); points[3].y = 0; points[4].x = 0; points[4].y = -(dc.h - 1); XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious); if(!text) return; w = 0; olen = len = strlen(text); if(len >= sizeof(buf)) len = sizeof(buf) - 1; memcpy(buf, text, len); buf[len] = 0; h = dc.font.ascent + dc.font.descent; y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent; x = dc.x + (h / 2); /* shorten text if necessary */ while(len && (w = textnw(buf, len)) > dc.w - h) buf[--len] = 0; if(len < olen) { if(len > 1) buf[len - 1] = '.'; if(len > 2) buf[len - 2] = '.'; if(len > 3) buf[len - 3] = '.'; } if(w > dc.w) return; /* too long */ gcv.foreground = invert ? dc.bg : dc.fg; gcv.background = invert ? dc.fg : dc.bg; if(dc.font.set) { XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv); XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len); } else { gcv.font = dc.font.xfont->fid; XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv); XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len); } } /* extern */ void drawall() { Client *c; for(c = clients; c; c = getnext(c->next)) drawtitle(c); drawstatus(); } void drawstatus() { int i, x; Bool istile = arrange == dotile; dc.x = dc.y = 0; dc.w = bw; drawtext(NULL, !istile); dc.w = 0; for(i = 0; i < ntags; i++) { dc.x += dc.w; dc.w = textw(tags[i]); if(istile) drawtext(tags[i], seltag[i]); else drawtext(tags[i], !seltag[i]); } x = dc.x + dc.w; dc.w = textw(stext); dc.x = bx + bw - dc.w; drawtext(stext, !istile); if(sel && ((dc.w = dc.x - x) >= bh)) { dc.x = x; drawtext(sel->name, istile); } XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0); XSync(dpy, False); } void drawtitle(Client *c) { int i; Bool istile = arrange == dotile; if(c == sel && issel) { drawstatus(); XUnmapWindow(dpy, c->title); XSetWindowBorder(dpy, c->win, dc.fg); return; } XSetWindowBorder(dpy, c->win, dc.bg); XMapWindow(dpy, c->title); dc.x = dc.y = 0; dc.w = 0; for(i = 0; i < ntags; i++) { if(c->tags[i]) { dc.x += dc.w; dc.w = textw(tags[i]); drawtext(tags[i], !istile); } } dc.x += dc.w; dc.w = c->tw - dc.x; drawtext(c->name, !istile); XCopyArea(dpy, dc.drawable, c->title, dc.gc, 0, 0, c->tw, c->th, 0, 0); XSync(dpy, False); } unsigned long getcolor(const char *colstr) { Colormap cmap = DefaultColormap(dpy, screen); XColor color; XAllocNamedColor(dpy, cmap, colstr, &color, &color); return color.pixel; } void setfont(const char *fontstr) { char **missing, *def; int i, n; missing = NULL; setlocale(LC_ALL, ""); if(dc.font.set) XFreeFontSet(dpy, dc.font.set); dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def); if(missing) { while(n--) fprintf(stderr, "missing fontset: %s\n", missing[n]); XFreeStringList(missing); if(dc.font.set) { XFreeFontSet(dpy, dc.font.set); dc.font.set = NULL; } } if(dc.font.set) { XFontSetExtents *font_extents; XFontStruct **xfonts; char **font_names; dc.font.ascent = dc.font.descent = 0; font_extents = XExtentsOfFontSet(dc.font.set); n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names); for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) { if(dc.font.ascent < (*xfonts)->ascent) dc.font.ascent = (*xfonts)->ascent; if(dc.font.descent < (*xfonts)->descent) dc.font.descent = (*xfonts)->descent; xfonts++; } } else { if(dc.font.xfont) XFreeFont(dpy, dc.font.xfont); dc.font.xfont = NULL; dc.font.xfont = XLoadQueryFont(dpy, fontstr); if (!dc.font.xfont) dc.font.xfont = XLoadQueryFont(dpy, "fixed"); if (!dc.font.xfont) eprint("error, cannot init 'fixed' font\n"); dc.font.ascent = dc.font.xfont->ascent; dc.font.descent = dc.font.xfont->descent; } dc.font.height = dc.font.ascent + dc.font.descent; } unsigned int textw(const char *text) { return textnw(text, strlen(text)) + dc.font.height; }