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