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