1/* © 2006-2007 Anselm R. Garbe <garbeam at gmail dot com>
  2 * © 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
  3 * © 2006-2007 Jukka Salmi <jukka at salmi dot ch>
  4 * © 2007 Premysl Hruby <dfenze at gmail dot com>
  5 * © 2007 Szabolcs Nagy <nszabolcs at gmail dot com>
  6 * See LICENSE file for license details. */
  7#include "dwm.h"
  8#include <stdlib.h>
  9
 10unsigned int blw = 0;
 11Layout *lt = NULL;
 12
 13/* static */
 14
 15static unsigned int nlayouts = 0;
 16static unsigned int masterw = MASTERWIDTH;
 17static unsigned int nmaster = NMASTER;
 18
 19static void
 20ban(Client *c) {
 21	if (c->isbanned)
 22		return;
 23	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 24	c->isbanned = True;
 25}
 26
 27static void
 28unban(Client *c) {
 29	if (!c->isbanned)
 30		return;
 31	XMoveWindow(dpy, c->win, c->x, c->y);
 32	c->isbanned = False;
 33}
 34
 35static void
 36tile(void) {
 37	unsigned int i, n, nx, ny, nw, nh, mw, mh, tw, th;
 38	Client *c;
 39
 40	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
 41		n++;
 42	/* window geoms */
 43	mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
 44	mw = (n > nmaster) ? (waw * masterw) / 1000 : waw;
 45	th = (n > nmaster) ? wah / (n - nmaster) : 0;
 46	tw = waw - mw;
 47
 48	for(i = 0, c = clients; c; c = c->next)
 49		if(isvisible(c)) {
 50			unban(c);
 51			if(c->isfloating)
 52				continue;
 53			c->ismax = False;
 54			nx = wax;
 55			ny = way;
 56			if(i < nmaster) {
 57				ny += i * mh;
 58				nw = mw - 2 * c->border;
 59				nh = mh;
 60				if(i + 1 == (n < nmaster ? n : nmaster)) /* remainder */
 61					nh = wah - mh * i;
 62				nh -= 2 * c->border;
 63			}
 64			else {  /* tile window */
 65				nx += mw;
 66				nw = tw - 2 * c->border;
 67				if(th > 2 * c->border) {
 68					ny += (i - nmaster) * th;
 69					nh = th;
 70					if(i + 1 == n) /* remainder */
 71						nh = wah - th * (i - nmaster);
 72					nh -= 2 * c->border;
 73				}
 74				else /* fallback if th <= 2 * c->border */
 75					nh = wah - 2 * c->border;
 76			}
 77			resize(c, nx, ny, nw, nh, False);
 78			i++;
 79		}
 80		else
 81			ban(c);
 82	focus(NULL);
 83	restack();
 84}
 85
 86LAYOUTS
 87
 88/* extern */
 89
 90void
 91floating(void) {
 92	Client *c;
 93
 94	for(c = clients; c; c = c->next)
 95		if(isvisible(c)) {
 96			if(c->isbanned)
 97				XMoveWindow(dpy, c->win, c->x, c->y);
 98			c->isbanned = False;
 99			resize(c, c->x, c->y, c->w, c->h, True);
100		}
101		else
102			ban(c);
103	focus(NULL);
104	restack();
105}
106
107void
108focusclient(const char *arg) {
109	Client *c;
110   
111	if(!sel || !arg)
112		return;
113	if(atoi(arg) < 0) {
114		for(c = sel->prev; c && !isvisible(c); c = c->prev);
115		if(!c) {
116			for(c = clients; c && c->next; c = c->next);
117			for(; c && !isvisible(c); c = c->prev);
118		}
119	}
120	else {
121		for(c = sel->next; c && !isvisible(c); c = c->next);
122		if(!c)
123			for(c = clients; c && !isvisible(c); c = c->next);
124	}
125	if(c) {
126		focus(c);
127		restack();
128	}
129}
130
131void
132incmasterw(const char *arg) {
133	int i;
134	if(lt->arrange != tile)
135		return;
136	if(!arg)
137		masterw = MASTERWIDTH;
138	else {
139		i = atoi(arg);
140		if(waw * (masterw + i) / 1000 >= waw - 2 * BORDERPX 
141		|| waw * (masterw + i) / 1000 <= 2 * BORDERPX)
142			return;
143		masterw += i;
144	}
145	lt->arrange();
146}
147
148void
149incnmaster(const char *arg) {
150	int i;
151
152	if(!arg)
153		nmaster = NMASTER;
154	else {
155		i = atoi(arg);
156		if((lt->arrange != tile) || (nmaster + i < 1)
157		|| (wah / (nmaster + i) <= 2 * BORDERPX))
158			return;
159		nmaster += i;
160	}
161	if(sel)
162		lt->arrange();
163	else
164		drawstatus();
165}
166
167void
168initlayouts(void) {
169	unsigned int i, w;
170
171	lt = &layout[0];
172	nlayouts = sizeof layout / sizeof layout[0];
173	for(blw = i = 0; i < nlayouts; i++) {
174		w = textw(layout[i].symbol);
175		if(w > blw)
176			blw = w;
177	}
178}
179
180Client *
181nexttiled(Client *c) {
182	for(; c && (c->isfloating || !isvisible(c)); c = c->next);
183	return c;
184}
185
186void
187restack(void) {
188	Client *c;
189	XEvent ev;
190
191	drawstatus();
192	if(!sel)
193		return;
194	if(sel->isfloating || lt->arrange == floating)
195		XRaiseWindow(dpy, sel->win);
196	if(lt->arrange != floating) {
197		if(!sel->isfloating)
198			XLowerWindow(dpy, sel->win);
199		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
200			if(c == sel)
201				continue;
202			XLowerWindow(dpy, c->win);
203		}
204	}
205	XSync(dpy, False);
206	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
207}
208
209void
210setlayout(const char *arg) {
211	int i;
212
213	if(!arg) {
214		lt++;
215		if(lt == layout + nlayouts)
216			lt = layout;
217	}
218	else {
219		i = atoi(arg);
220		if(i < 0 || i >= nlayouts)
221			return;
222		lt = &layout[i];
223	}
224	if(sel)
225		lt->arrange();
226	else
227		drawstatus();
228}
229
230void
231togglebar(const char *arg) {
232	if(bpos == BarOff)
233		bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
234	else
235		bpos = BarOff;
236	updatebarpos();
237	lt->arrange();
238}
239
240void
241togglemax(const char *arg) {
242	XEvent ev;
243
244	if(!sel || (lt->arrange != floating && !sel->isfloating) || sel->isfixed)
245		return;
246	if((sel->ismax = !sel->ismax)) {
247		sel->rx = sel->x;
248		sel->ry = sel->y;
249		sel->rw = sel->w;
250		sel->rh = sel->h;
251		resize(sel, wax, way, waw - 2 * BORDERPX, wah - 2 * BORDERPX, True);
252	}
253	else
254		resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);
255	drawstatus();
256	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
257}
258
259void
260zoom(const char *arg) {
261	Client *c;
262
263	if(!sel || lt->arrange == floating || sel->isfloating)
264		return;
265	if((c = sel) == nexttiled(clients))
266		if(!(c = nexttiled(c->next)))
267			return;
268	detach(c);
269	attach(c);
270	focus(c);
271	lt->arrange();
272}