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;
 24		c->ry = c->y;
 25		c->rw = c->w;
 26		c->rh = c->h;
 27		resize(c, wax, way, waw - 2 * BORDERPX, wah - 2 * BORDERPX, True);
 28	}
 29	else
 30		resize(c, c->rx, c->ry, c->rw, c->rh, True);
 31	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 32}
 33
 34/* extern */
 35
 36void (*arrange)(void) = DEFMODE;
 37
 38void
 39detach(Client *c) {
 40	if(c->prev)
 41		c->prev->next = c->next;
 42	if(c->next)
 43		c->next->prev = c->prev;
 44	if(c == clients)
 45		clients = c->next;
 46	c->next = c->prev = NULL;
 47}
 48
 49void
 50dofloat(void) {
 51	Client *c;
 52
 53	for(c = clients; c; c = c->next) {
 54		if(isvisible(c)) {
 55			if(c->isbanned)
 56				XMoveWindow(dpy, c->win, c->x, c->y);
 57			c->isbanned = False;
 58			resize(c, c->x, c->y, c->w, c->h, True);
 59		}
 60		else {
 61			c->isbanned = True;
 62			XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 63		}
 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, nx, ny, nw, nh, 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			if(c->isbanned)
 88				XMoveWindow(dpy, c->win, c->x, c->y);
 89			c->isbanned = False;
 90			if(c->isfloat)
 91				continue;
 92			c->ismax = False;
 93			nx = wax;
 94			ny = way;
 95			if(i < nmaster) {
 96				ny += i * mh;
 97				nw = mw - 2 * BORDERPX;
 98				nh = mh - 2 * BORDERPX;
 99			}
100			else {  /* tile window */
101				nx += mw;
102				nw = tw - 2 * BORDERPX;
103				if(th > 2 * BORDERPX) {
104					ny += (i - nmaster) * th;
105					nh = th - 2 * BORDERPX;
106				}
107				else /* fallback if th <= 2 * BORDERPX */
108					nh = wah - 2 * BORDERPX;
109			}
110			resize(c, nx, ny, nw, nh, False);
111			i++;
112		}
113		else {
114			c->isbanned = True;
115			XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
116		}
117	if(!sel || !isvisible(sel)) {
118		for(c = stack; c && !isvisible(c); c = c->snext);
119		focus(c);
120	}
121	restack();
122}
123
124void
125focusnext(Arg *arg) {
126	Client *c;
127   
128	if(!sel)
129		return;
130	for(c = sel->next; c && !isvisible(c); c = c->next);
131	if(!c)
132		for(c = clients; c && !isvisible(c); c = c->next);
133	if(c) {
134		focus(c);
135		restack();
136	}
137}
138
139void
140focusprev(Arg *arg) {
141	Client *c;
142
143	if(!sel)
144		return;
145	for(c = sel->prev; c && !isvisible(c); c = c->prev);
146	if(!c) {
147		for(c = clients; c && c->next; c = c->next);
148		for(; c && !isvisible(c); c = c->prev);
149	}
150	if(c) {
151		focus(c);
152		restack();
153	}
154}
155
156void
157incnmaster(Arg *arg) {
158	if((arrange == dofloat) || (nmaster + arg->i < 1)
159	|| (wah / (nmaster + arg->i) <= 2 * BORDERPX))
160		return;
161	nmaster += arg->i;
162	if(sel)
163		arrange();
164	else
165		drawstatus();
166}
167
168Bool
169isvisible(Client *c) {
170	unsigned int i;
171
172	for(i = 0; i < ntags; i++)
173		if(c->tags[i] && seltag[i])
174			return True;
175	return False;
176}
177
178void
179resizemaster(Arg *arg) {
180	if(arrange != dotile)
181		return;
182	if(arg->i == 0)
183		master = MASTER;
184	else {
185		if(waw * (master + arg->i) / 1000 >= waw - 2 * BORDERPX
186		|| waw * (master + arg->i) / 1000 <= 2 * BORDERPX)
187			return;
188		master += arg->i;
189	}
190	arrange();
191}
192
193void
194restack(void) {
195	Client *c;
196	XEvent ev;
197
198	drawstatus();
199	if(!sel)
200		return;
201	if(sel->isfloat || arrange == dofloat)
202		XRaiseWindow(dpy, sel->win);
203	if(arrange != dofloat) {
204		if(!sel->isfloat)
205			XLowerWindow(dpy, sel->win);
206		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
207			if(c == sel)
208				continue;
209			XLowerWindow(dpy, c->win);
210		}
211	}
212	XSync(dpy, False);
213	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
214}
215
216void
217togglefloat(Arg *arg) {
218	if(!sel || arrange == dofloat)
219		return;
220	sel->isfloat = !sel->isfloat;
221	arrange();
222}
223
224void
225togglemode(Arg *arg) {
226	arrange = (arrange == dofloat) ? dotile : dofloat;
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
245view(Arg *arg) {
246	unsigned int i;
247
248	for(i = 0; i < ntags; i++)
249		seltag[i] = (arg->i == -1) ? True : False;
250	if(arg->i >= 0 && arg->i < ntags)
251		seltag[arg->i] = True;
252	arrange();
253}
254
255void
256zoom(Arg *arg) {
257	unsigned int n;
258	Client *c;
259
260	if(!sel)
261		return;
262	if(sel->isfloat || (arrange == dofloat)) {
263		togglemax(sel);
264		return;
265	}
266	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
267		n++;
268
269	if((c = sel) == nexttiled(clients))
270		if(!(c = nexttiled(c->next)))
271			return;
272	detach(c);
273	if(clients)
274		clients->prev = c;
275	c->next = clients;
276	clients = c;
277	focus(c);
278	arrange();
279}