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 && (c->isfloat || !isvisible(c)); c = 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	for(c = sel->next; c && !isvisible(c); c = c->next);
129	if(!c)
130		for(c = clients; c && !isvisible(c); c = c->next);
131	if(c) {
132		focus(c);
133		restack();
134	}
135}
136
137void
138focusprev(Arg *arg) {
139	Client *c;
140
141	if(!sel)
142		return;
143	for(c = sel->prev; c && !isvisible(c); c = c->prev);
144	if(!c) {
145		for(c = clients; c && c->next; c = c->next);
146		for(; c && !isvisible(c); c = c->prev);
147	}
148	if(c) {
149		focus(c);
150		restack();
151	}
152}
153
154void
155incnmaster(Arg *arg) {
156	if((arrange == dofloat) || (nmaster + arg->i < 1)
157	|| (wah / (nmaster + arg->i) <= 2 * BORDERPX))
158		return;
159	nmaster += arg->i;
160	if(sel)
161		arrange();
162	else
163		drawstatus();
164}
165
166Bool
167isvisible(Client *c) {
168	unsigned int i;
169
170	for(i = 0; i < ntags; i++)
171		if(c->tags[i] && seltag[i])
172			return True;
173	return False;
174}
175
176void
177resizemaster(Arg *arg) {
178	if(arg->i == 0)
179		master = MASTER;
180	else {
181		if(waw * (master + arg->i) / 1000 >= waw - 2 * BORDERPX
182		|| waw * (master + arg->i) / 1000 <= 2 * BORDERPX)
183			return;
184		master += arg->i;
185	}
186	arrange();
187}
188
189void
190restack(void) {
191	Client *c;
192	XEvent ev;
193
194	drawstatus();
195	if(!sel)
196		return;
197	if(sel->isfloat || arrange == dofloat)
198		XRaiseWindow(dpy, sel->win);
199	if(arrange != dofloat) {
200		if(!sel->isfloat)
201			XLowerWindow(dpy, sel->win);
202		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
203			if(c == sel)
204				continue;
205			XLowerWindow(dpy, c->win);
206		}
207	}
208	XSync(dpy, False);
209	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
210}
211
212void
213togglefloat(Arg *arg) {
214	if(!sel || arrange == dofloat)
215		return;
216	sel->isfloat = !sel->isfloat;
217	arrange();
218}
219
220void
221togglemode(Arg *arg) {
222	arrange = (arrange == dofloat) ? dotile : dofloat;
223	if(sel)
224		arrange();
225	else
226		drawstatus();
227}
228
229void
230toggleview(Arg *arg) {
231	unsigned int i;
232
233	seltag[arg->i] = !seltag[arg->i];
234	for(i = 0; i < ntags && !seltag[i]; i++);
235	if(i == ntags)
236		seltag[arg->i] = True; /* cannot toggle last view */
237	arrange();
238}
239
240void
241view(Arg *arg) {
242	unsigned int i;
243
244	for(i = 0; i < ntags; i++)
245		seltag[i] = (arg->i == -1) ? True : False;
246	if(arg->i >= 0 && arg->i < ntags)
247		seltag[arg->i] = True;
248	arrange();
249}
250
251void
252zoom(Arg *arg) {
253	unsigned int n;
254	Client *c;
255
256	if(!sel)
257		return;
258	if(sel->isfloat || (arrange == dofloat)) {
259		togglemax(sel);
260		return;
261	}
262	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
263		n++;
264
265	if((c = sel) == nexttiled(clients))
266		if(!(c = nexttiled(c->next)))
267			return;
268	detach(c);
269	if(clients)
270		clients->prev = c;
271	c->next = clients;
272	clients = c;
273	focus(c);
274	arrange();
275}