1/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
  2 * See LICENSE file for license details.
  3 */
  4#include "dwm.h"
  5#include <stdio.h>
  6
  7/* static */
  8
  9static Client *
 10nexttiled(Client *c) {
 11	for(c = getnext(c); c && c->isfloat; c = getnext(c->next));
 12	return c;
 13}
 14
 15static void
 16togglemax(Client *c) {
 17	XEvent ev;
 18		
 19	if(c->isfixed)
 20		return;
 21
 22	if((c->ismax = !c->ismax)) {
 23		c->rx = c->x; c->x = wax;
 24		c->ry = c->y; c->y = way;
 25		c->rw = c->w; c->w = waw - 2 * BORDERPX;
 26		c->rh = c->h; c->h = wah - 2 * BORDERPX;
 27	}
 28	else {
 29		c->x = c->rx;
 30		c->y = c->ry;
 31		c->w = c->rw;
 32		c->h = c->rh;
 33	}
 34	resize(c, True);
 35	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 36}
 37
 38/* extern */
 39
 40void (*arrange)(void) = DEFMODE;
 41
 42void
 43detach(Client *c) {
 44	if(c->prev)
 45		c->prev->next = c->next;
 46	if(c->next)
 47		c->next->prev = c->prev;
 48	if(c == clients)
 49		clients = c->next;
 50	c->next = c->prev = NULL;
 51}
 52
 53void
 54dofloat(void) {
 55	Client *c;
 56
 57	for(c = clients; c; c = c->next) {
 58		if(isvisible(c)) {
 59			c->isbanned = False;
 60			resize(c, True);
 61		}
 62		else
 63			ban(c);
 64	}
 65	if(!sel || !isvisible(sel)) {
 66		for(c = stack; c && !isvisible(c); c = c->snext);
 67		focus(c);
 68	}
 69	restack();
 70}
 71
 72void
 73dotile(void) {
 74	unsigned int i, n, mw, mh, tw, th;
 75	Client *c;
 76
 77	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
 78		n++;
 79	/* window geoms */
 80	mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
 81	mw = (n > nmaster) ? (waw * master) / 1000 : waw;
 82	th = (n > nmaster) ? wah / (n - nmaster) : 0;
 83	tw = waw - mw;
 84
 85	for(i = 0, c = clients; c; c = c->next)
 86		if(isvisible(c)) {
 87			c->isbanned = False;
 88			if(c->isfloat) {
 89				resize(c, True);
 90				continue;
 91			}
 92			c->ismax = False;
 93			c->x = wax;
 94			c->y = way;
 95			if(i < nmaster) {
 96				c->y += i * mh;
 97				c->w = mw - 2 * BORDERPX;
 98				c->h = mh - 2 * BORDERPX;
 99			}
100			else {  /* tile window */
101				c->x += mw;
102				c->w = tw - 2 * BORDERPX;
103				if(th > 2 * BORDERPX) {
104					c->y += (i - nmaster) * th;
105					c->h = th - 2 * BORDERPX;
106				}
107				else /* fallback if th <= 2 * BORDERPX */
108					c->h = wah - 2 * BORDERPX;
109			}
110			resize(c, False);
111			i++;
112		}
113		else
114			ban(c);
115	if(!sel || !isvisible(sel)) {
116		for(c = stack; c && !isvisible(c); c = c->snext);
117		focus(c);
118	}
119	restack();
120}
121
122void
123focusnext(Arg *arg) {
124	Client *c;
125   
126	if(!sel)
127		return;
128	if(!(c = getnext(sel->next)))
129		c = getnext(clients);
130	if(c) {
131		focus(c);
132		restack();
133	}
134}
135
136void
137focusprev(Arg *arg) {
138	Client *c;
139
140	if(!sel)
141		return;
142	if(!(c = getprev(sel->prev))) {
143		for(c = clients; c && c->next; c = c->next);
144		c = getprev(c);
145	}
146	if(c) {
147		focus(c);
148		restack();
149	}
150}
151
152void
153incnmaster(Arg *arg) {
154	if((arrange == dofloat) || (nmaster + arg->i < 1)
155	|| (wah / (nmaster + arg->i) <= 2 * BORDERPX))
156		return;
157	nmaster += arg->i;
158	if(sel)
159		arrange();
160	else
161		drawstatus();
162}
163
164Bool
165isvisible(Client *c) {
166	unsigned int i;
167
168	for(i = 0; i < ntags; i++)
169		if(c->tags[i] && seltag[i])
170			return True;
171	return False;
172}
173
174void
175resizemaster(Arg *arg) {
176	if(arg->i == 0)
177		master = MASTER;
178	else {
179		if(waw * (master + arg->i) / 1000 >= waw - 2 * BORDERPX
180		|| waw * (master + arg->i) / 1000 <= 2 * BORDERPX)
181			return;
182		master += arg->i;
183	}
184	arrange();
185}
186
187void
188restack(void) {
189	Client *c;
190	XEvent ev;
191
192	drawstatus();
193	if(!sel)
194		return;
195	if(sel->isfloat || arrange == dofloat)
196		XRaiseWindow(dpy, sel->win);
197	if(arrange != dofloat) {
198		if(!sel->isfloat)
199			XLowerWindow(dpy, sel->win);
200		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
201			if(c == sel)
202				continue;
203			XLowerWindow(dpy, c->win);
204		}
205	}
206	XSync(dpy, False);
207	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
208}
209
210void
211togglefloat(Arg *arg) {
212	if(!sel || arrange == dofloat)
213		return;
214	sel->isfloat = !sel->isfloat;
215	arrange();
216}
217
218void
219togglemode(Arg *arg) {
220	arrange = (arrange == dofloat) ? dotile : dofloat;
221	if(sel)
222		arrange();
223	else
224		drawstatus();
225}
226
227void
228toggleview(Arg *arg) {
229	unsigned int i;
230
231	seltag[arg->i] = !seltag[arg->i];
232	for(i = 0; i < ntags && !seltag[i]; i++);
233	if(i == ntags)
234		seltag[arg->i] = True; /* cannot toggle last view */
235	arrange();
236}
237
238void
239view(Arg *arg) {
240	unsigned int i;
241
242	for(i = 0; i < ntags; i++)
243		seltag[i] = (arg->i == -1) ? True : False;
244	if(arg->i >= 0 && arg->i < ntags)
245		seltag[arg->i] = True;
246	arrange();
247}
248
249void
250zoom(Arg *arg) {
251	unsigned int n;
252	Client *c;
253
254	if(!sel)
255		return;
256	if(sel->isfloat || (arrange == dofloat)) {
257		togglemax(sel);
258		return;
259	}
260	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
261		n++;
262
263	if((c = sel) == nexttiled(clients))
264		if(!(c = nexttiled(c->next)))
265			return;
266	detach(c);
267	if(clients)
268		clients->prev = c;
269	c->next = clients;
270	clients = c;
271	focus(c);
272	arrange();
273}