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	XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
 29}
 30
 31static int
 32xerrordummy(Display *dsply, XErrorEvent *ee)
 33{
 34	return 0;
 35}
 36
 37/* extern functions */
 38
 39void
 40ban(Client *c)
 41{
 42	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 43	XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
 44}
 45
 46void
 47focus(Client *c)
 48{
 49	Client *old = sel;
 50	XEvent ev;
 51
 52	sel = c;
 53	if(old && old != c)
 54		drawtitle(old);
 55	drawtitle(c);
 56	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 57	XSync(dpy, False);
 58	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 59}
 60
 61void
 62focusnext(Arg *arg)
 63{
 64	Client *c;
 65   
 66	if(!sel)
 67		return;
 68
 69	if(!(c = getnext(sel->next)))
 70		c = getnext(clients);
 71	if(c) {
 72		higher(c);
 73		c->revert = sel;
 74		focus(c);
 75	}
 76}
 77
 78void
 79focusprev(Arg *arg)
 80{
 81	Client *c;
 82
 83	if(!sel)
 84		return;
 85
 86	if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
 87		higher(c);
 88		focus(c);
 89	}
 90}
 91
 92Client *
 93getclient(Window w)
 94{
 95	Client *c;
 96	for(c = clients; c; c = c->next)
 97		if(c->win == w)
 98			return c;
 99	return NULL;
100}
101
102Client *
103getctitle(Window w)
104{
105	Client *c;
106	for(c = clients; c; c = c->next)
107		if(c->title == w)
108			return c;
109	return NULL;
110}
111
112void
113gravitate(Client *c, Bool invert)
114{
115	int dx = 0, dy = 0;
116
117	switch(c->grav) {
118	case StaticGravity:
119	case NorthWestGravity:
120	case NorthGravity:
121	case NorthEastGravity:
122		dy = c->border;
123		break;
124	case EastGravity:
125	case CenterGravity:
126	case WestGravity:
127		dy = -(c->h / 2) + c->border;
128		break;
129	case SouthEastGravity:
130	case SouthGravity:
131	case SouthWestGravity:
132		dy = -c->h;
133		break;
134	default:
135		break;
136	}
137
138	switch (c->grav) {
139	case StaticGravity:
140	case NorthWestGravity:
141	case WestGravity:
142	case SouthWestGravity:
143		dx = c->border;
144		break;
145	case NorthGravity:
146	case CenterGravity:
147	case SouthGravity:
148		dx = -(c->w / 2) + c->border;
149		break;
150	case NorthEastGravity:
151	case EastGravity:
152	case SouthEastGravity:
153		dx = -(c->w + c->border);
154		break;
155	default:
156		break;
157	}
158
159	if(invert) {
160		dx = -dx;
161		dy = -dy;
162	}
163	c->x += dx;
164	c->y += dy;
165}
166
167void
168higher(Client *c)
169{
170	XRaiseWindow(dpy, c->win);
171	XRaiseWindow(dpy, c->title);
172}
173
174void
175killclient(Arg *arg)
176{
177	if(!sel)
178		return;
179	if(sel->proto & WM_PROTOCOL_DELWIN)
180		sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
181	else
182		XKillClient(dpy, sel->win);
183}
184
185void
186lower(Client *c)
187{
188	XLowerWindow(dpy, c->title);
189	XLowerWindow(dpy, c->win);
190}
191
192void
193manage(Window w, XWindowAttributes *wa)
194{
195	Client *c, **l;
196	XSetWindowAttributes twa;
197	Window trans;
198
199	c = emallocz(sizeof(Client));
200	c->win = w;
201	c->tx = c->x = wa->x;
202	c->ty = c->y = wa->y;
203	if(c->y < bh)
204		c->ty = c->y += bh;
205	c->tw = c->w = wa->width;
206	c->h = wa->height;
207	c->th = bh;
208	c->border = 1;
209	c->proto = getproto(c->win);
210	setsize(c);
211	XSelectInput(dpy, c->win,
212			StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
213	XGetTransientForHint(dpy, c->win, &trans);
214	twa.override_redirect = 1;
215	twa.background_pixmap = ParentRelative;
216	twa.event_mask = ExposureMask;
217
218	c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
219			0, DefaultDepth(dpy, screen), CopyFromParent,
220			DefaultVisual(dpy, screen),
221			CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
222
223	settitle(c);
224	settags(c);
225
226	for(l = &clients; *l; l = &(*l)->next);
227	c->next = *l; /* *l == nil */
228	*l = c;
229
230	XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
231			GrabModeAsync, GrabModeSync, None, None);
232	XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
233			GrabModeAsync, GrabModeSync, None, None);
234	XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
235			GrabModeAsync, GrabModeSync, None, None);
236
237	if(!c->dofloat)
238		c->dofloat = trans
239			|| ((c->maxw == c->minw) && (c->maxh == c->minh));
240
241	arrange(NULL);
242	/* mapping the window now prevents flicker */
243	if(c->tags[tsel]) {
244		XMapRaised(dpy, c->win);
245		XMapRaised(dpy, c->title);
246		focus(c);
247	}
248	else {
249		ban(c);
250		XMapRaised(dpy, c->win);
251		XMapRaised(dpy, c->title);
252	}
253}
254
255void
256maximize(Arg *arg)
257{
258	if(!sel)
259		return;
260	sel->x = sx;
261	sel->y = sy + bh;
262	sel->w = sw - 2 * sel->border;
263	sel->h = sh - 2 * sel->border - bh;
264	higher(sel);
265	resize(sel, False);
266}
267
268void
269resize(Client *c, Bool inc)
270{
271	XConfigureEvent e;
272
273	if(inc) {
274		if(c->incw)
275			c->w -= (c->w - c->basew) % c->incw;
276		if(c->inch)
277			c->h -= (c->h - c->baseh) % c->inch;
278	}
279	if(c->x > sw) /* might happen on restart */
280		c->x = sw - c->w;
281	if(c->y > sh)
282		c->ty = c->y = sh - c->h;
283	if(c->minw && c->w < c->minw)
284		c->w = c->minw;
285	if(c->minh && c->h < c->minh)
286		c->h = c->minh;
287	if(c->maxw && c->w > c->maxw)
288		c->w = c->maxw;
289	if(c->maxh && c->h > c->maxh)
290		c->h = c->maxh;
291	resizetitle(c);
292	XSetWindowBorderWidth(dpy, c->win, 1);
293	XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
294	e.type = ConfigureNotify;
295	e.event = c->win;
296	e.window = c->win;
297	e.x = c->x;
298	e.y = c->y;
299	e.width = c->w;
300	e.height = c->h;
301	e.border_width = c->border;
302	e.above = None;
303	e.override_redirect = False;
304	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
305	XSync(dpy, False);
306}
307
308void
309setsize(Client *c)
310{
311	XSizeHints size;
312	long msize;
313	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
314		size.flags = PSize;
315	c->flags = size.flags;
316	if(c->flags & PBaseSize) {
317		c->basew = size.base_width;
318		c->baseh = size.base_height;
319	}
320	else
321		c->basew = c->baseh = 0;
322	if(c->flags & PResizeInc) {
323		c->incw = size.width_inc;
324		c->inch = size.height_inc;
325	}
326	else
327		c->incw = c->inch = 0;
328	if(c->flags & PMaxSize) {
329		c->maxw = size.max_width;
330		c->maxh = size.max_height;
331	}
332	else
333		c->maxw = c->maxh = 0;
334	if(c->flags & PMinSize) {
335		c->minw = size.min_width;
336		c->minh = size.min_height;
337	}
338	else
339		c->minw = c->minh = 0;
340	if(c->flags & PWinGravity)
341		c->grav = size.win_gravity;
342	else
343		c->grav = NorthWestGravity;
344}
345
346void
347settitle(Client *c)
348{
349	XTextProperty name;
350	int n;
351	char **list = NULL;
352
353	name.nitems = 0;
354	c->name[0] = 0;
355	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
356	if(!name.nitems)
357		XGetWMName(dpy, c->win, &name);
358	if(!name.nitems)
359		return;
360	if(name.encoding == XA_STRING)
361		strncpy(c->name, (char *)name.value, sizeof(c->name));
362	else {
363		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
364				&& n > 0 && *list)
365		{
366			strncpy(c->name, *list, sizeof(c->name));
367			XFreeStringList(list);
368		}
369	}
370	XFree(name.value);
371	resizetitle(c);
372}
373
374void
375unmanage(Client *c)
376{
377	Client **l;
378
379	XGrabServer(dpy);
380	XSetErrorHandler(xerrordummy);
381
382	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
383	XDestroyWindow(dpy, c->title);
384
385	for(l = &clients; *l && *l != c; l = &(*l)->next);
386	*l = c->next;
387	for(l = &clients; *l; l = &(*l)->next)
388		if((*l)->revert == c)
389			(*l)->revert = NULL;
390	if(sel == c)
391		sel = sel->revert ? sel->revert : clients;
392
393	free(c);
394
395	XSync(dpy, False);
396	XSetErrorHandler(xerror);
397	XUngrabServer(dpy);
398	arrange(NULL);
399	if(sel)
400		focus(sel);
401}
402
403void
404zoom(Arg *arg)
405{
406	Client **l, *c;
407
408	if(!sel)
409		return;
410
411	if(sel == getnext(clients) && sel->next)  {
412		if((c = getnext(sel->next)))
413			sel = c;
414	}
415
416	for(l = &clients; *l && *l != sel; l = &(*l)->next);
417	*l = sel->next;
418
419	sel->next = clients; /* pop */
420	clients = sel;
421	arrange(NULL);
422	focus(sel);
423}