1/*
  2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  3 * See LICENSE file for license details.
  4 */
  5#include "dwm.h"
  6
  7#include <stdlib.h>
  8#include <string.h>
  9#include <X11/Xatom.h>
 10#include <X11/Xutil.h>
 11
 12/* static functions */
 13
 14static void
 15resizetitle(Client *c)
 16{
 17	int i;
 18
 19	c->tw = 0;
 20	for(i = 0; i < TLast; i++)
 21		if(c->tags[i])
 22			c->tw += textw(c->tags[i]);
 23	c->tw += textw(c->name);
 24	if(c->tw > c->w)
 25		c->tw = c->w + 2;
 26	c->tx = c->x + c->w - c->tw + 2;
 27	c->ty = c->y;
 28	if(c->tags[tsel])
 29		XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
 30	else
 31		XMoveResizeWindow(dpy, c->title, c->tx + 2 * sw, c->ty, c->tw, c->th);
 32
 33}
 34
 35static int
 36xerrordummy(Display *dsply, XErrorEvent *ee)
 37{
 38	return 0;
 39}
 40
 41/* extern functions */
 42
 43void
 44ban(Client *c)
 45{
 46	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 47	XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
 48}
 49
 50void
 51focus(Client *c)
 52{
 53	Client *old = sel;
 54	XEvent ev;
 55
 56	sel = c;
 57	if(old && old != c)
 58		drawtitle(old);
 59	drawtitle(c);
 60	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 61	XSync(dpy, False);
 62	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 63}
 64
 65void
 66focusnext(Arg *arg)
 67{
 68	Client *c;
 69   
 70	if(!sel)
 71		return;
 72
 73	if(sel->ismax)
 74		togglemax(NULL);
 75
 76	if(!(c = getnext(sel->next)))
 77		c = getnext(clients);
 78	if(c) {
 79		higher(c);
 80		focus(c);
 81	}
 82}
 83
 84void
 85focusprev(Arg *arg)
 86{
 87	Client *c;
 88
 89	if(!sel)
 90		return;
 91
 92	if(sel->ismax)
 93		togglemax(NULL);
 94
 95	if(!(c = getprev(sel->prev))) {
 96		for(c = clients; c && c->next; c = c->next);
 97		c = getprev(c);
 98	}
 99	if(c) {
100		higher(c);
101		focus(c);
102	}
103}
104
105Client *
106getclient(Window w)
107{
108	Client *c;
109
110	for(c = clients; c; c = c->next)
111		if(c->win == w)
112			return c;
113	return NULL;
114}
115
116Client *
117getctitle(Window w)
118{
119	Client *c;
120
121	for(c = clients; c; c = c->next)
122		if(c->title == w)
123			return c;
124	return NULL;
125}
126
127void
128gravitate(Client *c, Bool invert)
129{
130	int dx = 0, dy = 0;
131
132	switch(c->grav) {
133	default:
134		break;
135	case StaticGravity:
136	case NorthWestGravity:
137	case NorthGravity:
138	case NorthEastGravity:
139		dy = c->border;
140		break;
141	case EastGravity:
142	case CenterGravity:
143	case WestGravity:
144		dy = -(c->h / 2) + c->border;
145		break;
146	case SouthEastGravity:
147	case SouthGravity:
148	case SouthWestGravity:
149		dy = -(c->h);
150		break;
151	}
152
153	switch (c->grav) {
154	default:
155		break;
156	case StaticGravity:
157	case NorthWestGravity:
158	case WestGravity:
159	case SouthWestGravity:
160		dx = c->border;
161		break;
162	case NorthGravity:
163	case CenterGravity:
164	case SouthGravity:
165		dx = -(c->w / 2) + c->border;
166		break;
167	case NorthEastGravity:
168	case EastGravity:
169	case SouthEastGravity:
170		dx = -(c->w + c->border);
171		break;
172	}
173
174	if(invert) {
175		dx = -dx;
176		dy = -dy;
177	}
178	c->x += dx;
179	c->y += dy;
180}
181
182void
183higher(Client *c)
184{
185	XRaiseWindow(dpy, c->win);
186	XRaiseWindow(dpy, c->title);
187}
188
189void
190killclient(Arg *arg)
191{
192	if(!sel)
193		return;
194	if(sel->proto & PROTODELWIN)
195		sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
196	else
197		XKillClient(dpy, sel->win);
198}
199
200void
201lower(Client *c)
202{
203	XLowerWindow(dpy, c->title);
204	XLowerWindow(dpy, c->win);
205}
206
207void
208manage(Window w, XWindowAttributes *wa)
209{
210	Client *c;
211	Window trans;
212	XSetWindowAttributes twa;
213
214	c = emallocz(sizeof(Client));
215	c->win = w;
216	c->x = c->tx = wa->x;
217	c->y = c->ty = wa->y;
218	c->w = c->tw = wa->width;
219	c->h = wa->height;
220	c->th = bh;
221
222	c->border = 1;
223	setsize(c);
224
225	if(c->h != sh && c->y < bh)
226		c->y = c->ty = bh;
227
228	c->proto = getproto(c->win);
229	XSelectInput(dpy, c->win,
230		StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
231	XGetTransientForHint(dpy, c->win, &trans);
232	twa.override_redirect = 1;
233	twa.background_pixmap = ParentRelative;
234	twa.event_mask = ExposureMask | EnterWindowMask;
235
236	c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
237			0, DefaultDepth(dpy, screen), CopyFromParent,
238			DefaultVisual(dpy, screen),
239			CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
240
241	if(clients)
242		clients->prev = c;
243	c->next = clients;
244	clients = c;
245
246	XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
247			GrabModeAsync, GrabModeSync, None, None);
248	XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
249			GrabModeAsync, GrabModeSync, None, None);
250	XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
251			GrabModeAsync, GrabModeSync, None, None);
252
253	settags(c);
254	if(!c->isfloat)
255		c->isfloat = trans
256			|| (c->maxw && c->minw &&
257				c->maxw == c->minw && c->maxh == c->minh)
258			|| (c->w == sw && c->h == sh);
259	settitle(c);
260	arrange(NULL);
261
262	/* mapping the window now prevents flicker */
263	XMapRaised(dpy, c->win);
264	XMapRaised(dpy, c->title);
265	if(c->tags[tsel])
266		focus(c);
267}
268
269void
270resize(Client *c, Bool sizehints, Corner sticky)
271{
272	int bottom = c->y + c->h;
273	int right = c->x + c->w;
274	XConfigureEvent e;
275	XWindowChanges wc;
276
277	if(sizehints) {
278		if(c->incw)
279			c->w -= (c->w - c->basew) % c->incw;
280		if(c->inch)
281			c->h -= (c->h - c->baseh) % c->inch;
282		if(c->minw && c->w < c->minw)
283			c->w = c->minw;
284		if(c->minh && c->h < c->minh)
285			c->h = c->minh;
286		if(c->maxw && c->w > c->maxw)
287			c->w = c->maxw;
288		if(c->maxh && c->h > c->maxh)
289			c->h = c->maxh;
290	}
291	if(c->x > right) /* might happen on restart */
292		c->x = right - c->w;
293	if(c->y > bottom)
294		c->y = bottom - c->h;
295	if(sticky == TopRight || sticky == BotRight)
296		c->x = right - c->w;
297	if(sticky == BotLeft || sticky == BotRight)
298		c->y = bottom - c->h;
299
300	resizetitle(c);
301	wc.x = c->x;
302	wc.y = c->y;
303	wc.width = c->w;
304	wc.height = c->h;
305	wc.border_width = 1;
306	XConfigureWindow(dpy, c->win,
307			CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
308
309	e.type = ConfigureNotify;
310	e.event = c->win;
311	e.window = c->win;
312	e.x = c->x;
313	e.y = c->y;
314	e.width = c->w;
315	e.height = c->h;
316	e.border_width = c->border;
317	e.above = None;
318	e.override_redirect = False;
319	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
320	XSync(dpy, False);
321}
322
323void
324setsize(Client *c)
325{
326	long msize;
327	XSizeHints size;
328
329	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
330		size.flags = PSize;
331	c->flags = size.flags;
332	if(c->flags & PBaseSize) {
333		c->basew = size.base_width;
334		c->baseh = size.base_height;
335	}
336	else
337		c->basew = c->baseh = 0;
338	if(c->flags & PResizeInc) {
339		c->incw = size.width_inc;
340		c->inch = size.height_inc;
341	}
342	else
343		c->incw = c->inch = 0;
344	if(c->flags & PMaxSize) {
345		c->maxw = size.max_width;
346		c->maxh = size.max_height;
347	}
348	else
349		c->maxw = c->maxh = 0;
350	if(c->flags & PMinSize) {
351		c->minw = size.min_width;
352		c->minh = size.min_height;
353	}
354	else
355		c->minw = c->minh = 0;
356	if(c->flags & PWinGravity)
357		c->grav = size.win_gravity;
358	else
359		c->grav = NorthWestGravity;
360}
361
362void
363settitle(Client *c)
364{
365	char **list = NULL;
366	int n;
367	XTextProperty name;
368
369	name.nitems = 0;
370	c->name[0] = 0;
371	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
372	if(!name.nitems)
373		XGetWMName(dpy, c->win, &name);
374	if(!name.nitems)
375		return;
376	if(name.encoding == XA_STRING)
377		strncpy(c->name, (char *)name.value, sizeof(c->name));
378	else {
379		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
380				&& n > 0 && *list)
381		{
382			strncpy(c->name, *list, sizeof(c->name));
383			XFreeStringList(list);
384		}
385	}
386	XFree(name.value);
387	resizetitle(c);
388}
389
390void
391togglemax(Arg *arg)
392{
393	int ox, oy, ow, oh;
394	XEvent ev;
395
396	if(!sel)
397		return;
398
399	if((sel->ismax = !sel->ismax)) {
400		ox = sel->x;
401		oy = sel->y;
402		ow = sel->w;
403		oh = sel->h;
404		sel->x = sx;
405		sel->y = sy + bh;
406		sel->w = sw - 2 * sel->border;
407		sel->h = sh - 2 * sel->border - bh;
408
409		higher(sel);
410		resize(sel, False, TopLeft);
411
412		sel->x = ox;
413		sel->y = oy;
414		sel->w = ow;
415		sel->h = oh;
416	}
417	else
418		resize(sel, False, TopLeft);
419	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
420}
421
422void
423unmanage(Client *c)
424{
425	XGrabServer(dpy);
426	XSetErrorHandler(xerrordummy);
427
428	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
429	XDestroyWindow(dpy, c->title);
430
431	if(c->prev)
432		c->prev->next = c->next;
433	if(c->next)
434		c->next->prev = c->prev;
435	if(c == clients)
436		clients = c->next;
437	if(sel == c) {
438		sel = getnext(c->next);
439		if(!sel)
440			sel = getprev(c->prev);
441		if(!sel)
442			sel = clients;
443	}
444	free(c);
445
446	XSync(dpy, False);
447	XSetErrorHandler(xerror);
448	XUngrabServer(dpy);
449	arrange(NULL);
450	if(sel)
451		focus(sel);
452}
453
454void
455zoom(Arg *arg)
456{
457	Client *c;
458
459	if(!sel)
460		return;
461
462	if(sel == getnext(clients) && sel->next)  {
463		if((c = getnext(sel->next)))
464			sel = c;
465	}
466
467	/* pop */
468	if(sel->prev)
469		sel->prev->next = sel->next;
470	if(sel->next)
471		sel->next->prev = sel->prev;
472	sel->prev = NULL;
473	if(clients)
474		clients->prev = sel;
475	sel->next = clients;
476	clients = sel;
477	arrange(NULL);
478	focus(sel);
479}