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, TopLeft);
 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			resize(c, True, TopLeft);
 60		}
 61		else
 62			ban(c);
 63	}
 64	if(!sel || !isvisible(sel)) {
 65		for(c = stack; c && !isvisible(c); c = c->snext);
 66		focus(c);
 67	}
 68	restack();
 69}
 70
 71void
 72dotile(void) {
 73	unsigned int i, n, mw, mh, tw, th;
 74	Client *c;
 75
 76	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
 77		n++;
 78
 79	/* window geoms */
 80	if(nmaster > 0) {
 81		mh = (n > nmaster) ?  wah / nmaster : wah / (n > 0 ? n : 1);
 82		mw = (n > nmaster) ? (waw * master) / 1000 : waw;
 83	}
 84	else
 85		mh = mw = 0;
 86	th = (n > nmaster) ? wah / (n - nmaster) : 0;
 87	tw = waw - mw;
 88
 89	for(i = 0, c = clients; c; c = c->next)
 90		if(isvisible(c)) {
 91			if(c->isfloat) {
 92				resize(c, True, TopLeft);
 93				continue;
 94			}
 95			c->ismax = False;
 96			c->x = wax;
 97			c->y = way;
 98			if((nmaster > 0) && (i < nmaster)) {
 99				c->y += i * mh;
100				c->w = mw - 2 * BORDERPX;
101				c->h = mh - 2 * BORDERPX;
102			}
103			else {  /* tile window */
104				c->x += mw;
105				c->w = tw - 2 * BORDERPX;
106				if(th > bh) {
107					c->y += (i - nmaster) * th;
108					c->h = th - 2 * BORDERPX;
109				}
110				else /* fallback if th < bh */
111					c->h = wah - 2 * BORDERPX;
112			}
113			resize(c, False, TopLeft);
114			i++;
115		}
116		else
117			ban(c);
118
119	if(!sel || !isvisible(sel)) {
120		for(c = stack; c && !isvisible(c); c = c->snext);
121		focus(c);
122	}
123	restack();
124}
125
126void
127focusnext(Arg *arg) {
128	Client *c;
129   
130	if(!sel)
131		return;
132	if(!(c = getnext(sel->next)))
133		c = getnext(clients);
134	if(c) {
135		focus(c);
136		restack();
137	}
138}
139
140void
141focusprev(Arg *arg) {
142	Client *c;
143
144	if(!sel)
145		return;
146	if(!(c = getprev(sel->prev))) {
147		for(c = clients; c && c->next; c = c->next);
148		c = getprev(c);
149	}
150	if(c) {
151		focus(c);
152		restack();
153	}
154}
155
156void
157incnmaster(Arg *arg) {
158	if((arrange == dofloat)
159	|| ((int)nmaster + arg->i < 0)
160	|| (((int)nmaster + arg->i > 0) && (wah / (nmaster + arg->i) < bh)))
161		return;
162	nmaster += arg->i;
163	updatemodetext();
164	if(sel)
165		arrange();
166	else
167		drawstatus();
168}
169
170Bool
171isvisible(Client *c) {
172	unsigned int i;
173
174	for(i = 0; i < ntags; i++)
175		if(c->tags[i] && seltag[i])
176			return True;
177	return False;
178}
179
180void
181resizemaster(Arg *arg) {
182	if(arg->i == 0)
183		master = MASTER;
184	else {
185		if(master + arg->i > 950 || master + arg->i < 50)
186			return;
187		master += arg->i;
188	}
189	arrange();
190}
191
192void
193restack(void) {
194	Client *c;
195	XEvent ev;
196
197	if(!sel) {
198		drawstatus();
199		return;
200	}
201	if(sel->isfloat || arrange == dofloat) {
202		XRaiseWindow(dpy, sel->win);
203		XRaiseWindow(dpy, sel->twin);
204	}
205	if(arrange != dofloat) {
206		if(!sel->isfloat) {
207			XLowerWindow(dpy, sel->twin);
208			XLowerWindow(dpy, sel->win);
209		}
210		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
211			if(c == sel)
212				continue;
213			XLowerWindow(dpy, c->twin);
214			XLowerWindow(dpy, c->win);
215		}
216	}
217	drawall();
218	XSync(dpy, False);
219	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
220}
221
222void
223togglefloat(Arg *arg) {
224	if (!sel || arrange == dofloat)
225		return;
226	sel->isfloat = !sel->isfloat;
227	arrange();
228}
229
230void
231togglemode(Arg *arg) {
232	arrange = (arrange == dofloat) ? dotile : dofloat;
233	updatemodetext();
234	if(sel)
235		arrange();
236	else
237		drawstatus();
238}
239
240void
241toggleview(Arg *arg) {
242	unsigned int i;
243
244	seltag[arg->i] = !seltag[arg->i];
245	for(i = 0; i < ntags && !seltag[i]; i++);
246	if(i == ntags)
247		seltag[arg->i] = True; /* cannot toggle last view */
248	arrange();
249}
250
251void
252updatemodetext() {
253	snprintf(mtext, sizeof mtext, arrange == dofloat ? FLOATSYMBOL : TILESYMBOL, nmaster);
254	bmw = textw(mtext);
255}
256
257void
258view(Arg *arg) {
259	unsigned int i;
260
261	for(i = 0; i < ntags; i++)
262		seltag[i] = (arg->i == -1) ? True : False;
263	if(arg->i >= 0 && arg->i < ntags)
264		seltag[arg->i] = True;
265	arrange();
266}
267
268void
269zoom(Arg *arg) {
270	unsigned int n;
271	Client *c;
272
273	if(!sel)
274		return;
275	if(sel->isfloat || (arrange == dofloat)) {
276		togglemax(sel);
277		return;
278	}
279	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
280		n++;
281
282	if((c = sel) == nexttiled(clients))
283		if(!(c = nexttiled(c->next)))
284			return;
285	detach(c);
286	if(clients)
287		clients->prev = c;
288	c->next = clients;
289	clients = c;
290	focus(c);
291	arrange();
292}