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->bw = 0;
 20	for(i = 0; i < TLast; i++)
 21		if(c->tags[i])
 22			c->bw += textw(c->tags[i]);
 23	c->bw += textw(c->name);
 24	if(c->bw > *c->w)
 25		c->bw = *c->w + 2;
 26	c->bx = *c->x + *c->w - c->bw + 2;
 27	c->by = *c->y;
 28	if(c->tags[tsel])
 29		XMoveResizeWindow(dpy, c->title, c->bx, c->by, c->bw, c->bh);
 30	else
 31		XMoveResizeWindow(dpy, c->title, c->bx + 2 * sw, c->by, c->bw, c->bh);
 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->bx + 2 * sw, c->by);
 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(!(c = getnext(sel->next, tsel)))
 74		c = getnext(clients, tsel);
 75	if(c) {
 76		higher(c);
 77		c->revert = sel;
 78		focus(c);
 79	}
 80}
 81
 82void
 83focusprev(Arg *arg)
 84{
 85	Client *c;
 86
 87	if(!sel)
 88		return;
 89
 90	if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
 91		higher(c);
 92		focus(c);
 93	}
 94}
 95
 96Client *
 97getclient(Window w)
 98{
 99	Client *c;
100	for(c = clients; c; c = c->next)
101		if(c->win == w)
102			return c;
103	return NULL;
104}
105
106Client *
107getctitle(Window w)
108{
109	Client *c;
110	for(c = clients; c; c = c->next)
111		if(c->title == w)
112			return c;
113	return NULL;
114}
115
116void
117gravitate(Client *c, Bool invert)
118{
119	int dx = 0, dy = 0;
120
121	switch(c->grav) {
122	case StaticGravity:
123	case NorthWestGravity:
124	case NorthGravity:
125	case NorthEastGravity:
126		dy = c->border;
127		break;
128	case EastGravity:
129	case CenterGravity:
130	case WestGravity:
131		dy = -(*c->h / 2) + c->border;
132		break;
133	case SouthEastGravity:
134	case SouthGravity:
135	case SouthWestGravity:
136		dy = -(*c->h);
137		break;
138	default:
139		break;
140	}
141
142	switch (c->grav) {
143	case StaticGravity:
144	case NorthWestGravity:
145	case WestGravity:
146	case SouthWestGravity:
147		dx = c->border;
148		break;
149	case NorthGravity:
150	case CenterGravity:
151	case SouthGravity:
152		dx = -(*c->w / 2) + c->border;
153		break;
154	case NorthEastGravity:
155	case EastGravity:
156	case SouthEastGravity:
157		dx = -(*c->w + c->border);
158		break;
159	default:
160		break;
161	}
162
163	if(invert) {
164		dx = -dx;
165		dy = -dy;
166	}
167	*c->x += dx;
168	*c->y += dy;
169}
170
171void
172higher(Client *c)
173{
174	XRaiseWindow(dpy, c->win);
175	XRaiseWindow(dpy, c->title);
176}
177
178void
179killclient(Arg *arg)
180{
181	if(!sel)
182		return;
183	if(sel->proto & WM_PROTOCOL_DELWIN)
184		sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
185	else
186		XKillClient(dpy, sel->win);
187}
188
189void
190lower(Client *c)
191{
192	XLowerWindow(dpy, c->title);
193	XLowerWindow(dpy, c->win);
194}
195
196void
197manage(Window w, XWindowAttributes *wa)
198{
199	int diff;
200	Client *c;
201	XSetWindowAttributes twa;
202	Window trans;
203
204	c = emallocz(sizeof(Client));
205	c->win = w;
206	c->bx = c->fx = c->tx = wa->x;
207	c->by = c->fy = c->ty = wa->y;
208	c->bw = c->fw = c->tw = wa->width;
209	c->fh = c->th = wa->height;
210	c->bh = bh;
211
212	diff = sw - c->fw;
213	c->fx = random() % (diff ? diff : 1);
214	diff = sh - c->fh - bh;
215	c->fy = random() % (diff ? diff : 1);
216
217	if(c->fy < bh)
218		c->by = c->fy = c->ty = bh;
219
220	c->border = 1;
221	c->proto = getproto(c->win);
222	setsize(c);
223	XSelectInput(dpy, c->win,
224			StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
225	XGetTransientForHint(dpy, c->win, &trans);
226	twa.override_redirect = 1;
227	twa.background_pixmap = ParentRelative;
228	twa.event_mask = ExposureMask;
229
230	c->title = XCreateWindow(dpy, root, c->bx, c->by, c->bw, c->bh,
231			0, DefaultDepth(dpy, screen), CopyFromParent,
232			DefaultVisual(dpy, screen),
233			CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
234
235	settags(c);
236
237	c->next = clients;
238	clients = c;
239
240	XGrabButton(dpy, Button1, ControlMask, c->win, False, ButtonPressMask,
241			GrabModeAsync, GrabModeSync, None, None);
242	XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
243			GrabModeAsync, GrabModeSync, None, None);
244	XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
245			GrabModeAsync, GrabModeSync, None, None);
246	XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
247			GrabModeAsync, GrabModeSync, None, None);
248
249	if(!c->isfloat)
250		c->isfloat = trans
251			|| ((c->maxw == c->minw) && (c->maxh == c->minh));
252
253	setgeom(c);
254	settitle(c);
255
256	arrange(NULL);
257
258	/* mapping the window now prevents flicker */
259	if(c->tags[tsel]) {
260		XMapRaised(dpy, c->win);
261		XMapRaised(dpy, c->title);
262		focus(c);
263	}
264	else {
265		XMapRaised(dpy, c->win);
266		XMapRaised(dpy, c->title);
267	}
268}
269
270void
271maximize(Arg *arg)
272{
273	if(!sel)
274		return;
275	*sel->x = sx;
276	*sel->y = sy + bh;
277	*sel->w = sw - 2 * sel->border;
278	*sel->h = sh - 2 * sel->border - bh;
279	higher(sel);
280	resize(sel, False, TopLeft);
281}
282
283void
284pop(Client *c)
285{
286	Client **l;
287	for(l = &clients; *l && *l != c; l = &(*l)->next);
288	*l = c->next;
289
290	c->next = clients; /* pop */
291	clients = c;
292	arrange(NULL);
293}
294
295void
296resize(Client *c, Bool inc, Corner sticky)
297{
298	XConfigureEvent e;
299	int right = *c->x + *c->w;
300	int bottom = *c->y + *c->h;
301
302	if(inc) {
303		if(c->incw)
304			*c->w -= (*c->w - c->basew) % c->incw;
305		if(c->inch)
306			*c->h -= (*c->h - c->baseh) % c->inch;
307	}
308	if(*c->x > sw) /* might happen on restart */
309		*c->x = sw - *c->w;
310	if(*c->y > sh)
311		*c->y = sh - *c->h;
312	if(c->minw && *c->w < c->minw)
313		*c->w = c->minw;
314	if(c->minh && *c->h < c->minh)
315		*c->h = c->minh;
316	if(c->maxw && *c->w > c->maxw)
317		*c->w = c->maxw;
318	if(c->maxh && *c->h > c->maxh)
319		*c->h = c->maxh;
320	if(sticky == TopRight || sticky == BotRight)
321		*c->x = right - *c->w;
322	if(sticky == BotLeft || sticky == BotRight)
323		*c->y = bottom - *c->h;
324
325	resizetitle(c);
326	XSetWindowBorderWidth(dpy, c->win, 1);
327	XMoveResizeWindow(dpy, c->win, *c->x, *c->y, *c->w, *c->h);
328
329	e.type = ConfigureNotify;
330	e.event = c->win;
331	e.window = c->win;
332	e.x = *c->x;
333	e.y = *c->y;
334	e.width = *c->w;
335	e.height = *c->h;
336	e.border_width = c->border;
337	e.above = None;
338	e.override_redirect = False;
339	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
340	XSync(dpy, False);
341}
342
343void
344setgeom(Client *c)
345{
346	if((arrange == dotile) && !c->isfloat) {
347		c->x = &c->tx;
348		c->y = &c->ty;
349		c->w = &c->tw;
350		c->h = &c->th;
351	}
352	else {
353		c->x = &c->fx;
354		c->y = &c->fy;
355		c->w = &c->fw;
356		c->h = &c->fh;
357	}
358}
359
360void
361setsize(Client *c)
362{
363	XSizeHints size;
364	long msize;
365	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
366		size.flags = PSize;
367	c->flags = size.flags;
368	if(c->flags & PBaseSize) {
369		c->basew = size.base_width;
370		c->baseh = size.base_height;
371	}
372	else
373		c->basew = c->baseh = 0;
374	if(c->flags & PResizeInc) {
375		c->incw = size.width_inc;
376		c->inch = size.height_inc;
377	}
378	else
379		c->incw = c->inch = 0;
380	if(c->flags & PMaxSize) {
381		c->maxw = size.max_width;
382		c->maxh = size.max_height;
383	}
384	else
385		c->maxw = c->maxh = 0;
386	if(c->flags & PMinSize) {
387		c->minw = size.min_width;
388		c->minh = size.min_height;
389	}
390	else
391		c->minw = c->minh = 0;
392	if(c->flags & PWinGravity)
393		c->grav = size.win_gravity;
394	else
395		c->grav = NorthWestGravity;
396}
397
398void
399settitle(Client *c)
400{
401	XTextProperty name;
402	int n;
403	char **list = NULL;
404
405	name.nitems = 0;
406	c->name[0] = 0;
407	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
408	if(!name.nitems)
409		XGetWMName(dpy, c->win, &name);
410	if(!name.nitems)
411		return;
412	if(name.encoding == XA_STRING)
413		strncpy(c->name, (char *)name.value, sizeof(c->name));
414	else {
415		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
416				&& n > 0 && *list)
417		{
418			strncpy(c->name, *list, sizeof(c->name));
419			XFreeStringList(list);
420		}
421	}
422	XFree(name.value);
423	resizetitle(c);
424}
425
426void
427unmanage(Client *c)
428{
429	Client **l;
430
431	XGrabServer(dpy);
432	XSetErrorHandler(xerrordummy);
433
434	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
435	XDestroyWindow(dpy, c->title);
436
437	for(l = &clients; *l && *l != c; l = &(*l)->next);
438	*l = c->next;
439	for(l = &clients; *l; l = &(*l)->next)
440		if((*l)->revert == c)
441			(*l)->revert = NULL;
442	if(sel == c)
443		sel = sel->revert ? sel->revert : clients;
444
445	free(c);
446
447	XSync(dpy, False);
448	XSetErrorHandler(xerror);
449	XUngrabServer(dpy);
450	arrange(NULL);
451	if(sel)
452		focus(sel);
453}
454
455void
456zoom(Arg *arg)
457{
458	Client *c;
459
460	if(!sel)
461		return;
462
463	if(sel == getnext(clients, tsel) && sel->next)  {
464		if((c = getnext(sel->next, tsel)))
465			sel = c;
466	}
467
468	pop(sel);
469	focus(sel);
470}