1/*
  2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  3 * See LICENSE file for license details.
  4 */
  5
  6#include <stdlib.h>
  7#include <stdio.h>
  8#include <string.h>
  9#include <X11/Xatom.h>
 10#include <X11/Xutil.h>
 11
 12#include "dwm.h"
 13
 14void
 15ban(Client *c)
 16{
 17	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 18	XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
 19}
 20
 21static void
 22resizetitle(Client *c)
 23{
 24	int i;
 25
 26	c->tw = 0;
 27	for(i = 0; i < TLast; i++)
 28		if(c->tags[i])
 29			c->tw += textw(c->tags[i]);
 30	c->tw += textw(c->name);
 31	if(c->tw > c->w)
 32		c->tw = c->w + 2;
 33	c->tx = c->x + c->w - c->tw + 2;
 34	c->ty = c->y;
 35	XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
 36}
 37
 38void
 39settitle(Client *c)
 40{
 41	XTextProperty name;
 42	int n;
 43	char **list = NULL;
 44
 45	name.nitems = 0;
 46	c->name[0] = 0;
 47	XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
 48	if(!name.nitems)
 49		XGetWMName(dpy, c->win, &name);
 50	if(!name.nitems)
 51		return;
 52	if(name.encoding == XA_STRING)
 53		strncpy(c->name, (char *)name.value, sizeof(c->name));
 54	else {
 55		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 56				&& n > 0 && *list)
 57		{
 58			strncpy(c->name, *list, sizeof(c->name));
 59			XFreeStringList(list);
 60		}
 61	}
 62	XFree(name.value);
 63	resizetitle(c);
 64}
 65
 66void
 67setsize(Client *c)
 68{
 69	XSizeHints size;
 70	long msize;
 71	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 72		size.flags = PSize;
 73	c->flags = size.flags;
 74	if(c->flags & PBaseSize) {
 75		c->basew = size.base_width;
 76		c->baseh = size.base_height;
 77	}
 78	else
 79		c->basew = c->baseh = 0;
 80	if(c->flags & PResizeInc) {
 81		c->incw = size.width_inc;
 82		c->inch = size.height_inc;
 83	}
 84	else
 85		c->incw = c->inch = 0;
 86	if(c->flags & PMaxSize) {
 87		c->maxw = size.max_width;
 88		c->maxh = size.max_height;
 89	}
 90	else
 91		c->maxw = c->maxh = 0;
 92	if(c->flags & PMinSize) {
 93		c->minw = size.min_width;
 94		c->minh = size.min_height;
 95	}
 96	else
 97		c->minw = c->minh = 0;
 98	if(c->flags & PWinGravity)
 99		c->grav = size.win_gravity;
100	else
101		c->grav = NorthWestGravity;
102}
103
104void
105higher(Client *c)
106{
107	XRaiseWindow(dpy, c->win);
108	XRaiseWindow(dpy, c->title);
109}
110
111void
112lower(Client *c)
113{
114	XLowerWindow(dpy, c->title);
115	XLowerWindow(dpy, c->win);
116}
117
118void
119focus(Client *c)
120{
121	Client *old = sel;
122	XEvent ev;
123
124	XFlush(dpy);
125	sel = c;
126	if(old && old != c)
127		drawtitle(old);
128	drawtitle(c);
129	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
130	XFlush(dpy);
131	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
132}
133
134void
135manage(Window w, XWindowAttributes *wa)
136{
137	Client *c, **l;
138	XSetWindowAttributes twa;
139	Window trans;
140
141	c = emallocz(sizeof(Client));
142	c->win = w;
143	c->tx = c->x = wa->x;
144	c->ty = c->y = wa->y;
145	if(c->y < bh)
146		c->ty = c->y += bh;
147	c->tw = c->w = wa->width;
148	c->h = wa->height;
149	c->th = bh;
150	c->border = 1;
151	c->proto = getproto(c->win);
152	setsize(c);
153	XSelectInput(dpy, c->win,
154			StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
155	XGetTransientForHint(dpy, c->win, &trans);
156	twa.override_redirect = 1;
157	twa.background_pixmap = ParentRelative;
158	twa.event_mask = ExposureMask;
159
160	c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
161			0, DefaultDepth(dpy, screen), CopyFromParent,
162			DefaultVisual(dpy, screen),
163			CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
164
165	settitle(c);
166	settags(c);
167
168	for(l = &clients; *l; l = &(*l)->next);
169	c->next = *l; /* *l == nil */
170	*l = c;
171
172	XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
173			GrabModeAsync, GrabModeSync, None, None);
174	XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
175			GrabModeAsync, GrabModeSync, None, None);
176	XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
177			GrabModeAsync, GrabModeSync, None, None);
178
179	if(!c->dofloat)
180		c->dofloat = trans
181			|| ((c->maxw == c->minw) && (c->maxh == c->minh));
182
183	arrange(NULL);
184	/* mapping the window now prevents flicker */
185	if(c->tags[tsel]) {
186		XMapRaised(dpy, c->win);
187		XMapRaised(dpy, c->title);
188		focus(c);
189	}
190	else {
191		ban(c);
192		XMapRaised(dpy, c->win);
193		XMapRaised(dpy, c->title);
194	}
195}
196
197void
198gravitate(Client *c, Bool invert)
199{
200	int dx = 0, dy = 0;
201
202	switch(c->grav) {
203	case StaticGravity:
204	case NorthWestGravity:
205	case NorthGravity:
206	case NorthEastGravity:
207		dy = c->border;
208		break;
209	case EastGravity:
210	case CenterGravity:
211	case WestGravity:
212		dy = -(c->h / 2) + c->border;
213		break;
214	case SouthEastGravity:
215	case SouthGravity:
216	case SouthWestGravity:
217		dy = -c->h;
218		break;
219	default:
220		break;
221	}
222
223	switch (c->grav) {
224	case StaticGravity:
225	case NorthWestGravity:
226	case WestGravity:
227	case SouthWestGravity:
228		dx = c->border;
229		break;
230	case NorthGravity:
231	case CenterGravity:
232	case SouthGravity:
233		dx = -(c->w / 2) + c->border;
234		break;
235	case NorthEastGravity:
236	case EastGravity:
237	case SouthEastGravity:
238		dx = -(c->w + c->border);
239		break;
240	default:
241		break;
242	}
243
244	if(invert) {
245		dx = -dx;
246		dy = -dy;
247	}
248	c->x += dx;
249	c->y += dy;
250}
251
252
253void
254resize(Client *c, Bool inc)
255{
256	XConfigureEvent e;
257
258	if(inc) {
259		if(c->incw)
260			c->w -= (c->w - c->basew) % c->incw;
261		if(c->inch)
262			c->h -= (c->h - c->baseh) % c->inch;
263	}
264	if(c->x > sw) /* might happen on restart */
265		c->x = sw - c->w;
266	if(c->y > sh)
267		c->ty = c->y = sh - c->h;
268	if(c->minw && c->w < c->minw)
269		c->w = c->minw;
270	if(c->minh && c->h < c->minh)
271		c->h = c->minh;
272	if(c->maxw && c->w > c->maxw)
273		c->w = c->maxw;
274	if(c->maxh && c->h > c->maxh)
275		c->h = c->maxh;
276	resizetitle(c);
277	XSetWindowBorderWidth(dpy, c->win, 1);
278	XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
279	e.type = ConfigureNotify;
280	e.event = c->win;
281	e.window = c->win;
282	e.x = c->x;
283	e.y = c->y;
284	e.width = c->w;
285	e.height = c->h;
286	e.border_width = c->border;
287	e.above = None;
288	e.override_redirect = False;
289	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
290	XFlush(dpy);
291}
292
293static int
294xerrordummy(Display *dsply, XErrorEvent *ee)
295{
296	return 0;
297}
298
299void
300unmanage(Client *c)
301{
302	Client **l;
303
304	XGrabServer(dpy);
305	XSetErrorHandler(xerrordummy);
306
307	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
308	XDestroyWindow(dpy, c->title);
309
310	for(l = &clients; *l && *l != c; l = &(*l)->next);
311	*l = c->next;
312	for(l = &clients; *l; l = &(*l)->next)
313		if((*l)->revert == c)
314			(*l)->revert = NULL;
315	if(sel == c)
316		sel = sel->revert ? sel->revert : clients;
317
318	free(c);
319
320	XFlush(dpy);
321	XSetErrorHandler(xerror);
322	XUngrabServer(dpy);
323	arrange(NULL);
324	if(sel)
325		focus(sel);
326}
327
328Client *
329getctitle(Window w)
330{
331	Client *c;
332	for(c = clients; c; c = c->next)
333		if(c->title == w)
334			return c;
335	return NULL;
336}
337
338Client *
339getclient(Window w)
340{
341	Client *c;
342	for(c = clients; c; c = c->next)
343		if(c->win == w)
344			return c;
345	return NULL;
346}
347
348void
349zoom(Arg *arg)
350{
351	Client **l, *c;
352
353	if(!sel)
354		return;
355
356	if(sel == getnext(clients) && sel->next)  {
357		if((c = getnext(sel->next)))
358			sel = c;
359	}
360
361	for(l = &clients; *l && *l != sel; l = &(*l)->next);
362	*l = sel->next;
363
364	sel->next = clients; /* pop */
365	clients = sel;
366	arrange(NULL);
367	focus(sel);
368}
369
370void
371maximize(Arg *arg)
372{
373	if(!sel)
374		return;
375	sel->x = sx;
376	sel->y = sy + bh;
377	sel->w = sw - 2 * sel->border;
378	sel->h = sh - 2 * sel->border - bh;
379	higher(sel);
380	resize(sel, False);
381}
382
383void
384focusprev(Arg *arg)
385{
386	Client *c;
387
388	if(!sel)
389		return;
390
391	if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
392		higher(c);
393		focus(c);
394	}
395}
396
397void
398focusnext(Arg *arg)
399{
400	Client *c;
401   
402	if(!sel)
403		return;
404
405	if(!(c = getnext(sel->next)))
406		c = getnext(clients);
407	if(c) {
408		higher(c);
409		c->revert = sel;
410		focus(c);
411	}
412}
413
414void
415killclient(Arg *arg)
416{
417	if(!sel)
418		return;
419	if(sel->proto & WM_PROTOCOL_DELWIN)
420		sendevent(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
421	else
422		XKillClient(dpy, sel->win);
423}