1/*
  2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  3 * See LICENSE file for license details.
  4 */
  5#include "dwm.h"
  6#include <regex.h>
  7#include <stdio.h>
  8#include <stdlib.h>
  9#include <string.h>
 10#include <sys/types.h>
 11#include <X11/Xutil.h>
 12
 13
 14typedef struct {
 15	const char *clpattern;
 16	const char *tpattern;
 17	Bool isfloat;
 18} Rule;
 19
 20typedef struct {
 21	regex_t *clregex;
 22	regex_t *tregex;
 23} RReg;
 24
 25/* static */
 26
 27TAGS
 28RULES
 29
 30static RReg *rreg = NULL;
 31static unsigned int len = 0;
 32
 33void (*arrange)(Arg *) = DEFMODE;
 34
 35/* extern */
 36
 37void
 38appendtag(Arg *arg)
 39{
 40	if(!sel)
 41		return;
 42
 43	sel->tags[arg->i] = True;
 44	arrange(NULL);
 45}
 46
 47void
 48dofloat(Arg *arg)
 49{
 50	Client *c;
 51
 52	for(c = clients; c; c = c->next) {
 53		c->ismax = False;
 54		if(c->tags[tsel]) {
 55			resize(c, True, TopLeft);
 56		}
 57		else
 58			ban(c);
 59	}
 60	if((sel = getnext(clients))) {
 61		higher(sel);
 62		focus(sel);
 63	}
 64	else
 65		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 66	drawall();
 67}
 68
 69void
 70dotile(Arg *arg)
 71{
 72	int n, i, w, h;
 73	Client *c;
 74
 75	w = sw - mw;
 76	for(n = 0, c = clients; c; c = c->next)
 77		if(c->tags[tsel] && !c->isfloat)
 78			n++;
 79
 80	if(n > 1)
 81		h = (sh - bh) / (n - 1);
 82	else
 83		h = sh - bh;
 84
 85	for(i = 0, c = clients; c; c = c->next) {
 86		c->ismax = False;
 87		if(c->tags[tsel]) {
 88			if(c->isfloat) {
 89				higher(c);
 90				resize(c, True, TopLeft);
 91				continue;
 92			}
 93			if(n == 1) {
 94				c->x = sx;
 95				c->y = sy + bh;
 96				c->w = sw - 2;
 97				c->h = sh - 2 - bh;
 98			}
 99			else if(i == 0) {
100				c->x = sx;
101				c->y = sy + bh;
102				c->w = mw - 2;
103				c->h = sh - 2 - bh;
104			}
105			else if(h > bh) {
106				c->x = sx + mw;
107				c->y = sy + (i - 1) * h + bh;
108				c->w = w - 2;
109				c->h = h - 2;
110			}
111			else { /* fallback if h < bh */
112				c->x = sx + mw;
113				c->y = sy + bh;
114				c->w = w - 2;
115				c->h = sh - 2 - bh;
116			}
117			resize(c, False, TopLeft);
118			i++;
119		}
120		else
121			ban(c);
122	}
123	if((sel = getnext(clients))) {
124		higher(sel);
125		focus(sel);
126	}
127	else
128		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
129	drawall();
130}
131
132Client *
133getnext(Client *c)
134{
135	for(; c && !c->tags[tsel]; c = c->next);
136	return c;
137}
138
139Client *
140getprev(Client *c)
141{
142	for(; c && !c->tags[tsel]; c = c->prev);
143	return c;
144}
145
146void
147initrregs()
148{
149	unsigned int i;
150	regex_t *reg;
151
152	if(rreg)
153		return;
154	len = sizeof(rule) / sizeof(rule[0]);
155	rreg = emallocz(len * sizeof(RReg));
156
157	for(i = 0; i < len; i++) {
158		if(rule[i].clpattern) {
159			reg = emallocz(sizeof(regex_t));
160			if(regcomp(reg, rule[i].clpattern, 0))
161				free(reg);
162			else
163				rreg[i].clregex = reg;
164		}
165		if(rule[i].tpattern) {
166			reg = emallocz(sizeof(regex_t));
167			if(regcomp(reg, rule[i].tpattern, 0))
168				free(reg);
169			else
170				rreg[i].tregex = reg;
171		}
172	}
173}
174
175void
176replacetag(Arg *arg)
177{
178	int i;
179
180	if(!sel)
181		return;
182
183	for(i = 0; i < ntags; i++)
184		sel->tags[i] = False;
185	appendtag(arg);
186}
187
188void
189settags(Client *c)
190{
191	char classinst[256];
192	unsigned int i, j;
193	regmatch_t tmp;
194	Bool matched = False;
195	XClassHint ch;
196
197	if(XGetClassHint(dpy, c->win, &ch)) {
198		snprintf(classinst, sizeof(classinst), "%s:%s",
199				ch.res_class ? ch.res_class : "",
200				ch.res_name ? ch.res_name : "");
201		for(i = 0; !matched && i < len; i++)
202			if(rreg[i].clregex && !regexec(rreg[i].clregex, classinst, 1, &tmp, 0)) {
203				c->isfloat = rule[i].isfloat;
204				for(j = 0; rreg[i].tregex && j < ntags; j++) {
205					if(!regexec(rreg[i].tregex, tags[j], 1, &tmp, 0)) {
206						matched = True;
207						c->tags[j] = True;
208					}
209				}
210			}
211		if(ch.res_class)
212			XFree(ch.res_class);
213		if(ch.res_name)
214			XFree(ch.res_name);
215	}
216	if(!matched)
217		c->tags[tsel] = True;
218}
219
220void
221togglemode(Arg *arg)
222{
223	arrange = arrange == dofloat ? dotile : dofloat;
224	arrange(NULL);
225}
226
227void
228view(Arg *arg)
229{
230	tsel = arg->i;
231	arrange(NULL);
232	drawall();
233}
234
235void
236viewnext(Arg *arg)
237{
238	arg->i = (tsel < ntags-1) ? tsel+1 : 0;
239	view(arg);
240}
241
242void
243viewprev(Arg *arg)
244{
245	arg->i = (tsel > 0) ? tsel-1 : ntags-1;
246	view(arg);
247}