1/* See LICENSE file for copyright and license details. */
  2#include "dwm.h"
  3#include <stdio.h>
  4#include <stdlib.h>
  5
  6unsigned int blw = 0;
  7Layout *lt = NULL;
  8
  9/* static */
 10
 11static double hratio = HRATIO;
 12static double vratio = VRATIO;
 13static unsigned int nlayouts = 0;
 14static unsigned int nmaster = NMASTER;
 15
 16static double /* simple pow() */
 17spow(double x, double y)
 18{
 19	if(y == 0)
 20		return 1;
 21	while(--y)
 22		x *= x;
 23	return x;
 24}
 25
 26static void
 27tile(void) {
 28	double mscale = 0, tscale = 0, sum = 0;
 29	unsigned int i, n, nx, ny, nw, nh, mw, tw;
 30	Client *c;
 31
 32	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
 33		n++;
 34
 35	mw = (n <= nmaster) ? waw :  waw / (1 + hratio);
 36	tw = waw - mw;
 37
 38	if(n > 0) {
 39		if(n < nmaster) {
 40			for(i = 0; i < n; i++)
 41				sum += spow(vratio, i);
 42			mscale = wah / sum;
 43		}
 44		else {
 45			for(i = 0; i < nmaster; i++)
 46				sum += spow(vratio, i);
 47			mscale = wah / sum;
 48			for(sum = 0, i = 0; i < (n - nmaster); i++)
 49				sum += spow(vratio, i);
 50			tscale = wah / sum;
 51		}
 52	}
 53	nx = wax;
 54	ny = way;
 55	for(i = 0, c = clients; c; c = c->next)
 56		if(isvisible(c)) {
 57			unban(c);
 58			if(c->isfloating)
 59				continue;
 60			c->ismax = False;
 61			if(i < nmaster) { /* master window */
 62				nw = mw - 2 * c->border;
 63				if(i + 1 == n || i + 1 == nmaster)
 64					nh = (way + wah) - ny - (2 * c->border);
 65				else
 66					nh = (mscale * spow(vratio, i)) - (2 * c->border);
 67			}
 68			else { /* tile window */
 69				if(i == nmaster) {
 70					ny = way;
 71					nx = wax + mw;
 72				}
 73				nw = tw - 2 * c->border;
 74				if(i + 1 == n)
 75					nh = (way + wah) - ny - (2 * c->border);
 76				else
 77					nh = (tscale * spow(vratio, i - nmaster)) - (2 * c->border);
 78			}
 79			if(nh < bh) {
 80				nh = bh;
 81				ny = way + wah - nh;
 82			}
 83			resize(c, nx, ny, nw, nh, False);
 84			ny += nh;
 85			i++;
 86		}
 87		else
 88			ban(c);
 89	focus(NULL);
 90	restack();
 91}
 92
 93LAYOUTS
 94
 95static void
 96incratio(const char *arg, double *ratio, double def) {
 97	double delta;
 98
 99	if(lt->arrange != tile)
100		return;
101	if(!arg)
102		*ratio = def;
103	else {
104		if(1 == sscanf(arg, "%lf", &delta)) {
105			if(delta + (*ratio) < .1 || delta + (*ratio) > 1.9)
106				return;
107			*ratio += delta;
108		}
109	}
110	lt->arrange();
111}
112
113/* extern */
114
115void
116floating(void) {
117	Client *c;
118
119	for(c = clients; c; c = c->next)
120		if(isvisible(c)) {
121			unban(c);
122			resize(c, c->x, c->y, c->w, c->h, True);
123		}
124		else
125			ban(c);
126	focus(NULL);
127	restack();
128}
129
130void
131focusclient(const char *arg) {
132	Client *c;
133   
134	if(!sel || !arg)
135		return;
136	if(atoi(arg) < 0) {
137		for(c = sel->prev; c && !isvisible(c); c = c->prev);
138		if(!c) {
139			for(c = clients; c && c->next; c = c->next);
140			for(; c && !isvisible(c); c = c->prev);
141		}
142	}
143	else {
144		for(c = sel->next; c && !isvisible(c); c = c->next);
145		if(!c)
146			for(c = clients; c && !isvisible(c); c = c->next);
147	}
148	if(c) {
149		focus(c);
150		restack();
151	}
152}
153
154void
155inchratio(const char *arg) {
156	incratio(arg, &hratio, HRATIO);
157}
158
159void
160incvratio(const char *arg) {
161	incratio(arg, &vratio, VRATIO);
162}
163
164void
165incnmaster(const char *arg) {
166	int i;
167
168	if(!arg)
169		nmaster = NMASTER;
170	else {
171		i = atoi(arg);
172		if((lt->arrange != tile) || (nmaster + i < 1)
173		|| (wah / (nmaster + i) <= 2 * BORDERPX))
174			return;
175		nmaster += i;
176	}
177	if(sel)
178		lt->arrange();
179	else
180		drawstatus();
181}
182
183void
184initlayouts(void) {
185	unsigned int i, w;
186
187	lt = &layout[0];
188	nlayouts = sizeof layout / sizeof layout[0];
189	for(blw = i = 0; i < nlayouts; i++) {
190		w = textw(layout[i].symbol);
191		if(w > blw)
192			blw = w;
193	}
194}
195
196Client *
197nexttiled(Client *c) {
198	for(; c && (c->isfloating || !isvisible(c)); c = c->next);
199	return c;
200}
201
202void
203restack(void) {
204	Client *c;
205	XEvent ev;
206	XWindowChanges wc;
207
208	drawstatus();
209	if(!sel)
210		return;
211	if(sel->isfloating || lt->arrange == floating)
212		XRaiseWindow(dpy, sel->win);
213	if(lt->arrange != floating) {
214		wc.stack_mode = Below;
215		wc.sibling = barwin;
216		if(!sel->isfloating) {
217			XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
218			wc.sibling = sel->win;
219		}
220		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
221			if(c == sel)
222				continue;
223			XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
224			wc.sibling = c->win;
225		}
226	}
227	XSync(dpy, False);
228	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
229}
230
231void
232setlayout(const char *arg) {
233	int i;
234
235	if(!arg) {
236		lt++;
237		if(lt == layout + nlayouts)
238			lt = layout;
239	}
240	else {
241		i = atoi(arg);
242		if(i < 0 || i >= nlayouts)
243			return;
244		lt = &layout[i];
245	}
246	if(sel)
247		lt->arrange();
248	else
249		drawstatus();
250}
251
252void
253togglebar(const char *arg) {
254	if(bpos == BarOff)
255		bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
256	else
257		bpos = BarOff;
258	updatebarpos();
259	lt->arrange();
260}
261
262void
263togglemax(const char *arg) {
264	XEvent ev;
265
266	if(!sel || (lt->arrange != floating && !sel->isfloating) || sel->isfixed)
267		return;
268	if((sel->ismax = !sel->ismax)) {
269		sel->rx = sel->x;
270		sel->ry = sel->y;
271		sel->rw = sel->w;
272		sel->rh = sel->h;
273		resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
274	}
275	else
276		resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);
277	drawstatus();
278	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
279}
280
281void
282zoom(const char *arg) {
283	Client *c;
284
285	if(!sel || lt->arrange == floating || sel->isfloating)
286		return;
287	if((c = sel) == nexttiled(clients))
288		if(!(c = nexttiled(c->next)))
289			return;
290	detach(c);
291	attach(c);
292	focus(c);
293	lt->arrange();
294}