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(!(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->x = c->tx = wa->x;
207	c->y = c->ty = wa->y;
208	c->w = c->tw = wa->width;
209	c->h = wa->height;
210	c->th = bh;
211
212	if(c->y < bh)
213		c->y = c->ty = bh;
214
215	c->border = 1;
216	c->proto = getproto(c->win);
217	setsize(c);
218	XSelectInput(dpy, c->win,
219			StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
220	XGetTransientForHint(dpy, c->win, &trans);
221	twa.override_redirect = 1;
222	twa.background_pixmap = ParentRelative;
223	twa.event_mask = ExposureMask;
224
225	c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
226			0, DefaultDepth(dpy, screen), CopyFromParent,
227			DefaultVisual(dpy, screen),
228			CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
229
230	settags(c);
231
232	c->next = clients;
233	clients = c;
234
235	XGrabButton(dpy, Button1, ControlMask, c->win, False, ButtonPressMask,
236			GrabModeAsync, GrabModeSync, None, None);
237	XGrabButton(dpy, Button1, MODKEY, c->win, False, ButtonPressMask,
238			GrabModeAsync, GrabModeSync, None, None);
239	XGrabButton(dpy, Button2, MODKEY, c->win, False, ButtonPressMask,
240			GrabModeAsync, GrabModeSync, None, None);
241	XGrabButton(dpy, Button3, MODKEY, c->win, False, ButtonPressMask,
242			GrabModeAsync, GrabModeSync, None, None);
243
244	if(!c->isfloat)
245		c->isfloat = trans || (c->maxw && c->minw &&
246				(c->maxw == c->minw) && (c->maxh == c->minh));
247
248
249	settitle(c);
250	arrange(NULL);
251
252	/* mapping the window now prevents flicker */
253	if(c->tags[tsel]) {
254		XMapRaised(dpy, c->win);
255		XMapRaised(dpy, c->title);
256		focus(c);
257	}
258	else {
259		XMapRaised(dpy, c->win);
260		XMapRaised(dpy, c->title);
261	}
262}
263
264void
265maximize(Arg *arg)
266{
267	if(!sel)
268		return;
269	sel->x = sx;
270	sel->y = sy + bh;
271	sel->w = sw - 2 * sel->border;
272	sel->h = sh - 2 * sel->border - bh;
273	higher(sel);
274	resize(sel, False, TopLeft);
275}
276
277void
278pop(Client *c)
279{
280	Client **l;
281	for(l = &clients; *l && *l != c; l = &(*l)->next);
282	*l = c->next;
283
284	c->next = clients; /* pop */
285	clients = c;
286	arrange(NULL);
287}
288
289void
290resize(Client *c, Bool inc, Corner sticky)
291{
292	XConfigureEvent e;
293	int right = c->x + c->w;
294	int bottom = c->y + c->h;
295
296	if(inc) {
297		if(c->incw)
298			c->w -= (c->w - c->basew) % c->incw;
299		if(c->inch)
300			c->h -= (c->h - c->baseh) % c->inch;
301	}
302	if(c->x > sw) /* might happen on restart */
303		c->x = sw - c->w;
304	if(c->y > sh)
305		c->y = sh - c->h;
306	if(c->minw && c->w < c->minw)
307		c->w = c->minw;
308	if(c->minh && c->h < c->minh)
309		c->h = c->minh;
310	if(c->maxw && c->w > c->maxw)
311		c->w = c->maxw;
312	if(c->maxh && c->h > c->maxh)
313		c->h = c->maxh;
314	if(sticky == TopRight || sticky == BotRight)
315		c->x = right - c->w;
316	if(sticky == BotLeft || sticky == BotRight)
317		c->y = bottom - c->h;
318
319	resizetitle(c);
320	XSetWindowBorderWidth(dpy, c->win, 1);
321	XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
322
323	e.type = ConfigureNotify;
324	e.event = c->win;
325	e.window = c->win;
326	e.x = c->x;
327	e.y = c->y;
328	e.width = c->w;
329	e.height = c->h;
330	e.border_width = c->border;
331	e.above = None;
332	e.override_redirect = False;
333	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
334	XSync(dpy, False);
335}
336
337void
338setsize(Client *c)
339{
340	XSizeHints size;
341	long msize;
342	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
343		size.flags = PSize;
344	c->flags = size.flags;
345	if(c->flags & PBaseSize) {
346		c->basew = size.base_width;
347		c->baseh = size.base_height;
348	}
349	else
350		c->basew = c->baseh = 0;
351	if(c->flags & PResizeInc) {
352		c->incw = size.width_inc;
353		c->inch = size.height_inc;
354	}
355	else
356		c->incw = c->inch = 0;
357	if(c->flags & PMaxSize) {
358		c->maxw = size.max_width;
359		c->maxh = size.max_height;
360	}
361	else
362		c->maxw = c->maxh = 0;
363	if(c->flags & PMinSize) {
364		c->minw = size.min_width;
365		c->minh = size.min_height;
366	}
367	else
368		c->minw = c->minh = 0;
369	if(c->flags & PWinGravity)
370		c->grav = size.win_gravity;
371	else
372		c->grav = NorthWestGravity;
373}
374
375void
376settitle(Client *c)
377{
378	XTextProperty name;
379	int n;
380	char **list = NULL;
381
382	name.nitems = 0;
383	c->name[0] = 0;
384	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
385	if(!name.nitems)
386		XGetWMName(dpy, c->win, &name);
387	if(!name.nitems)
388		return;
389	if(name.encoding == XA_STRING)
390		strncpy(c->name, (char *)name.value, sizeof(c->name));
391	else {
392		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
393				&& n > 0 && *list)
394		{
395			strncpy(c->name, *list, sizeof(c->name));
396			XFreeStringList(list);
397		}
398	}
399	XFree(name.value);
400	resizetitle(c);
401}
402
403void
404unmanage(Client *c)
405{
406	Client **l;
407
408	XGrabServer(dpy);
409	XSetErrorHandler(xerrordummy);
410
411	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
412	XDestroyWindow(dpy, c->title);
413
414	for(l = &clients; *l && *l != c; l = &(*l)->next);
415	*l = c->next;
416	for(l = &clients; *l; l = &(*l)->next)
417		if((*l)->revert == c)
418			(*l)->revert = NULL;
419	if(sel == c)
420		sel = sel->revert ? sel->revert : clients;
421
422	free(c);
423
424	XSync(dpy, False);
425	XSetErrorHandler(xerror);
426	XUngrabServer(dpy);
427	arrange(NULL);
428	if(sel)
429		focus(sel);
430}
431
432void
433zoom(Arg *arg)
434{
435	Client *c;
436
437	if(!sel)
438		return;
439
440	if(sel == getnext(clients, tsel) && sel->next)  {
441		if((c = getnext(sel->next, tsel)))
442			sel = c;
443	}
444
445	pop(sel);
446	focus(sel);
447}