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, tsel)))
 77		c = getnext(clients, tsel);
 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 & WM_PROTOCOL_DELWIN)
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	if(c->y < bh)
223		c->y = c->ty = bh;
224
225	c->border = 1;
226	c->proto = getproto(c->win);
227	setsize(c);
228	XSelectInput(dpy, c->win,
229		StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
230	XGetTransientForHint(dpy, c->win, &trans);
231	twa.override_redirect = 1;
232	twa.background_pixmap = ParentRelative;
233	twa.event_mask = ExposureMask;
234
235	c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
236			0, DefaultDepth(dpy, screen), CopyFromParent,
237			DefaultVisual(dpy, screen),
238			CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
239
240	settags(c);
241
242	if(clients)
243		clients->prev = c;
244	c->next = clients;
245	clients = c;
246
247	XGrabButton(dpy, Button1, MODKEY, c->win, False, ButtonPressMask,
248			GrabModeAsync, GrabModeSync, None, None);
249	XGrabButton(dpy, Button2, MODKEY, c->win, False, ButtonPressMask,
250			GrabModeAsync, GrabModeSync, None, None);
251	XGrabButton(dpy, Button3, MODKEY, c->win, False, ButtonPressMask,
252			GrabModeAsync, GrabModeSync, None, None);
253
254	if(!c->isfloat)
255		c->isfloat = trans || (c->maxw && c->minw &&
256				(c->maxw == c->minw) && (c->maxh == c->minh));
257
258
259	settitle(c);
260	arrange(NULL);
261
262	/* mapping the window now prevents flicker */
263	if(c->tags[tsel]) {
264		XMapRaised(dpy, c->win);
265		XMapRaised(dpy, c->title);
266		focus(c);
267	}
268	else {
269		XMapRaised(dpy, c->win);
270		XMapRaised(dpy, c->title);
271
272	}
273}
274
275void
276pop(Client *c)
277{
278	Client **l;
279
280	for(l = &clients; *l && *l != c; l = &(*l)->next);
281	if(c->prev)
282		c->prev->next = c->next;
283	if(c->next)
284		c->next->prev = c->prev;
285	*l = c->next;
286
287	if(clients)
288		clients->prev = c;
289	c->next = clients;
290	clients = c;
291	arrange(NULL);
292}
293
294void
295resize(Client *c, Bool inc, Corner sticky)
296{
297	int bottom = c->y + c->h;
298	int right = c->x + c->w;
299	XConfigureEvent e;
300
301	if(inc) {
302		if(c->incw)
303			c->w -= (c->w - c->basew) % c->incw;
304		if(c->inch)
305			c->h -= (c->h - c->baseh) % c->inch;
306	}
307	if(c->x > sw) /* might happen on restart */
308		c->x = sw - c->w;
309	if(c->y > sh)
310		c->y = sh - c->h;
311	if(c->minw && c->w < c->minw)
312		c->w = c->minw;
313	if(c->minh && c->h < c->minh)
314		c->h = c->minh;
315	if(c->maxw && c->w > c->maxw)
316		c->w = c->maxw;
317	if(c->maxh && c->h > c->maxh)
318		c->h = c->maxh;
319	if(sticky == TopRight || sticky == BotRight)
320		c->x = right - c->w;
321	if(sticky == BotLeft || sticky == BotRight)
322		c->y = bottom - c->h;
323
324	resizetitle(c);
325	XSetWindowBorderWidth(dpy, c->win, 1);
326	XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
327
328	e.type = ConfigureNotify;
329	e.event = c->win;
330	e.window = c->win;
331	e.x = c->x;
332	e.y = c->y;
333	e.width = c->w;
334	e.height = c->h;
335	e.border_width = c->border;
336	e.above = None;
337	e.override_redirect = False;
338	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
339	XSync(dpy, False);
340}
341
342void
343setsize(Client *c)
344{
345	long msize;
346	XSizeHints size;
347
348	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
349		size.flags = PSize;
350	c->flags = size.flags;
351	if(c->flags & PBaseSize) {
352		c->basew = size.base_width;
353		c->baseh = size.base_height;
354	}
355	else
356		c->basew = c->baseh = 0;
357	if(c->flags & PResizeInc) {
358		c->incw = size.width_inc;
359		c->inch = size.height_inc;
360	}
361	else
362		c->incw = c->inch = 0;
363	if(c->flags & PMaxSize) {
364		c->maxw = size.max_width;
365		c->maxh = size.max_height;
366	}
367	else
368		c->maxw = c->maxh = 0;
369	if(c->flags & PMinSize) {
370		c->minw = size.min_width;
371		c->minh = size.min_height;
372	}
373	else
374		c->minw = c->minh = 0;
375	if(c->flags & PWinGravity)
376		c->grav = size.win_gravity;
377	else
378		c->grav = NorthWestGravity;
379}
380
381void
382settitle(Client *c)
383{
384	char **list = NULL;
385	int n;
386	XTextProperty name;
387
388	name.nitems = 0;
389	c->name[0] = 0;
390	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
391	if(!name.nitems)
392		XGetWMName(dpy, c->win, &name);
393	if(!name.nitems)
394		return;
395	if(name.encoding == XA_STRING)
396		strncpy(c->name, (char *)name.value, sizeof(c->name));
397	else {
398		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
399				&& n > 0 && *list)
400		{
401			strncpy(c->name, *list, sizeof(c->name));
402			XFreeStringList(list);
403		}
404	}
405	XFree(name.value);
406	resizetitle(c);
407}
408
409void
410togglemax(Arg *arg)
411{
412	int ox, oy, ow, oh;
413	XEvent ev;
414
415	if(!sel)
416		return;
417
418	if((sel->ismax = !sel->ismax)) {
419		ox = sel->x;
420		oy = sel->y;
421		ow = sel->w;
422		oh = sel->h;
423		sel->x = sx;
424		sel->y = sy + bh;
425		sel->w = sw - 2 * sel->border;
426		sel->h = sh - 2 * sel->border - bh;
427
428		higher(sel);
429		resize(sel, False, TopLeft);
430
431		sel->x = ox;
432		sel->y = oy;
433		sel->w = ow;
434		sel->h = oh;
435	}
436	else
437		resize(sel, False, TopLeft);
438	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
439}
440
441void
442unmanage(Client *c)
443{
444	Client **l;
445
446	XGrabServer(dpy);
447	XSetErrorHandler(xerrordummy);
448
449	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
450	XDestroyWindow(dpy, c->title);
451
452	for(l = &clients; *l && *l != c; l = &(*l)->next);
453	if(c->prev)
454		c->prev->next = c->next;
455	if(c->next)
456		c->next->prev = c->prev;
457	*l = c->next;
458	if(sel == c) {
459		sel = getnext(c->next, tsel);
460		if(!sel)
461			sel = getprev(c->prev);
462		if(!sel)
463			sel = clients;
464	}
465	free(c);
466
467	XSync(dpy, False);
468	XSetErrorHandler(xerror);
469	XUngrabServer(dpy);
470	arrange(NULL);
471	if(sel)
472		focus(sel);
473}
474
475void
476zoom(Arg *arg)
477{
478	Client *c;
479
480	if(!sel)
481		return;
482
483	if(sel == getnext(clients, tsel) && sel->next)  {
484		if((c = getnext(sel->next, tsel)))
485			sel = c;
486	}
487
488	pop(sel);
489	focus(sel);
490}