summary refs log tree commit diff
path: root/xevents.c
blob: 91da64ab8e4365a49b187df48a66ab6f923507e7 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
/*
 * calmwm - the calm window manager
 *
 * Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * $OpenBSD$
 */

/*
 * NOTE:
 *   It is the responsibility of the caller to deal with memory
 *   management of the xevent's.
 */

#include <sys/param.h>
#include <sys/queue.h>

#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "calmwm.h"

static void	 xev_handle_maprequest(XEvent *);
static void	 xev_handle_unmapnotify(XEvent *);
static void	 xev_handle_destroynotify(XEvent *);
static void	 xev_handle_configurerequest(XEvent *);
static void	 xev_handle_propertynotify(XEvent *);
static void	 xev_handle_enternotify(XEvent *);
static void	 xev_handle_leavenotify(XEvent *);
static void	 xev_handle_buttonpress(XEvent *);
static void	 xev_handle_buttonrelease(XEvent *);
static void	 xev_handle_keypress(XEvent *);
static void	 xev_handle_keyrelease(XEvent *);
static void	 xev_handle_expose(XEvent *);
static void	 xev_handle_clientmessage(XEvent *);
static void	 xev_handle_randr(XEvent *);
static void	 xev_handle_mappingnotify(XEvent *);


void		(*xev_handlers[LASTEvent])(XEvent *) = {
			[MapRequest] = xev_handle_maprequest,
			[UnmapNotify] = xev_handle_unmapnotify,
			[ConfigureRequest] = xev_handle_configurerequest,
			[PropertyNotify] = xev_handle_propertynotify,
			[EnterNotify] = xev_handle_enternotify,
			[LeaveNotify] = xev_handle_leavenotify,
			[ButtonPress] = xev_handle_buttonpress,
			[ButtonRelease] = xev_handle_buttonrelease,
			[KeyPress] = xev_handle_keypress,
			[KeyRelease] = xev_handle_keyrelease,
			[Expose] = xev_handle_expose,
			[DestroyNotify] = xev_handle_destroynotify,
			[ClientMessage] = xev_handle_clientmessage,
			[MappingNotify] = xev_handle_mappingnotify,
};

static KeySym modkeys[] = { XK_Alt_L, XK_Alt_R, XK_Super_L, XK_Super_R,
			    XK_Control_L, XK_Control_R };

static void
xev_handle_maprequest(XEvent *ee)
{
	XMapRequestEvent	*e = &ee->xmaprequest;
	struct client_ctx	*cc = NULL, *old_cc;
	XWindowAttributes	 xattr;

	if ((old_cc = client_current()) != NULL)
		client_ptrsave(old_cc);

	if ((cc = client_find(e->window)) == NULL) {
		XGetWindowAttributes(X_Dpy, e->window, &xattr);
		cc = client_init(e->window, screen_fromroot(xattr.root), 1);
	}

	if ((cc->flags & CLIENT_IGNORE) == 0)
		client_ptrwarp(cc);
}

static void
xev_handle_unmapnotify(XEvent *ee)
{
	XUnmapEvent		*e = &ee->xunmap;
	XEvent			ev;
	struct client_ctx	*cc;

	/* XXX, we need a recursive locking wrapper around grab server */
	XGrabServer(X_Dpy);
	if ((cc = client_find(e->window)) != NULL) {
		/*
		 * If it's going to die anyway, nuke it.
		 *
		 * Else, if it's a synthetic event delete state, since they
		 * want it to be withdrawn. ICCM recommends you withdraw on
		 * this even if we haven't alredy been told to iconify, to
		 * deal with legacy clients.
		 */
		if (XCheckTypedWindowEvent(X_Dpy, cc->win,
		    DestroyNotify, &ev) || e->send_event != 0) {
			client_delete(cc);
		} else
			client_hide(cc);
	}
	XUngrabServer(X_Dpy);
}

static void
xev_handle_destroynotify(XEvent *ee)
{
	XDestroyWindowEvent	*e = &ee->xdestroywindow;
	struct client_ctx	*cc;

	if ((cc = client_find(e->window)) != NULL)
		client_delete(cc);
}

static void
xev_handle_configurerequest(XEvent *ee)
{
	XConfigureRequestEvent	*e = &ee->xconfigurerequest;
	struct client_ctx	*cc;
	struct screen_ctx	*sc;
	XWindowChanges		 wc;

	if ((cc = client_find(e->window)) != NULL) {
		sc = cc->sc;

		if (e->value_mask & CWWidth)
			cc->geom.w = e->width;
		if (e->value_mask & CWHeight)
			cc->geom.h = e->height;
		if (e->value_mask & CWX)
			cc->geom.x = e->x;
		if (e->value_mask & CWY)
			cc->geom.y = e->y;
		if (e->value_mask & CWBorderWidth)
			wc.border_width = e->border_width;

		if (cc->geom.x == 0 && cc->geom.w >= sc->view.w)
			cc->geom.x -= cc->bwidth;

		if (cc->geom.y == 0 && cc->geom.h >= sc->view.h)
			cc->geom.y -= cc->bwidth;

		wc.x = cc->geom.x;
		wc.y = cc->geom.y;
		wc.width = cc->geom.w;
		wc.height = cc->geom.h;
		wc.border_width = cc->bwidth;

		XConfigureWindow(X_Dpy, cc->win, e->value_mask, &wc);
		xu_configure(cc);
	} else {
		/* let it do what it wants, it'll be ours when we map it. */
		wc.x = e->x;
		wc.y = e->y;
		wc.width = e->width;
		wc.height = e->height;
		wc.border_width = e->border_width;
		wc.stack_mode = Above;
		e->value_mask &= ~CWStackMode;

		XConfigureWindow(X_Dpy, e->window, e->value_mask, &wc);
	}
}

static void
xev_handle_propertynotify(XEvent *ee)
{
	XPropertyEvent		*e = &ee->xproperty;
	struct screen_ctx	*sc;
	struct client_ctx	*cc;

	if ((cc = client_find(e->window)) != NULL) {
		switch (e->atom) {
		case XA_WM_NORMAL_HINTS:
			client_getsizehints(cc);
			break;
		case XA_WM_NAME:
			client_setname(cc);
			break;
		case XA_WM_TRANSIENT_FOR:
			client_transient(cc);
			break;
		default:
			/* do nothing */
			break;
		}
	} else {
		TAILQ_FOREACH(sc, &Screenq, entry) {
			if (sc->rootwin == e->window) {
				if (e->atom == ewmh[_NET_DESKTOP_NAMES].atom)
					group_update_names(sc);
			}
		}
	}
}

static void
xev_handle_enternotify(XEvent *ee)
{
	XCrossingEvent		*e = &ee->xcrossing;
	struct client_ctx	*cc;

	if ((cc = client_find(e->window)) != NULL)
		client_setactive(cc, 1);
}

static void
xev_handle_leavenotify(XEvent *ee)
{
	client_leave(NULL);
}

/* We can split this into two event handlers. */
static void
xev_handle_buttonpress(XEvent *ee)
{
	XButtonEvent		*e = &ee->xbutton;
	struct client_ctx	*cc, fakecc;
	struct screen_ctx	*sc;
	struct mousebinding	*mb;

	sc = screen_fromroot(e->root);
	cc = client_find(e->window);

	e->state &= ~IGNOREMODMASK;

	TAILQ_FOREACH(mb, &Conf.mousebindingq, entry) {
		if (e->button == mb->button && e->state == mb->modmask)
			break;
	}

	if (mb == NULL)
		return;
	if (mb->context == MOUSEBIND_CTX_ROOT) {
		if (e->window != sc->rootwin)
			return;
		cc = &fakecc;
		cc->sc = screen_fromroot(e->window);
	} else if (cc == NULL) /* (mb->context == MOUSEBIND_CTX_WIN */
		return;

	(*mb->callback)(cc, e);
}

static void
xev_handle_buttonrelease(XEvent *ee)
{
	struct client_ctx *cc;

	if ((cc = client_current()) != NULL)
		group_sticky_toggle_exit(cc);
}

static void
xev_handle_keypress(XEvent *ee)
{
	XKeyEvent		*e = &ee->xkey;
	struct client_ctx	*cc = NULL, fakecc;
	struct keybinding	*kb;
	KeySym			 keysym, skeysym;
	u_int			 modshift;

	keysym = XkbKeycodeToKeysym(X_Dpy, e->keycode, 0, 0);
	skeysym = XkbKeycodeToKeysym(X_Dpy, e->keycode, 0, 1);

	e->state &= ~IGNOREMODMASK;

	TAILQ_FOREACH(kb, &Conf.keybindingq, entry) {
		if (keysym != kb->keysym && skeysym == kb->keysym)
			modshift = ShiftMask;
		else
			modshift = 0;

		if ((kb->modmask | modshift) != e->state)
			continue;

		if ((kb->keycode != 0 && kb->keysym == NoSymbol &&
		    kb->keycode == e->keycode) || kb->keysym ==
		    (modshift == 0 ? keysym : skeysym))
			break;
	}

	if (kb == NULL)
		return;
	if (kb->flags & KBFLAG_NEEDCLIENT) {
		if (((cc = client_find(e->window)) == NULL) &&
		    (cc = client_current()) == NULL)
			return;
	} else {
		cc = &fakecc;
		cc->sc = screen_fromroot(e->window);
	}

	(*kb->callback)(cc, &kb->argument);
}

/*
 * This is only used for the modifier suppression detection.
 */
static void
xev_handle_keyrelease(XEvent *ee)
{
	XKeyEvent		*e = &ee->xkey;
	struct screen_ctx	*sc;
	struct client_ctx	*cc;
	KeySym			 keysym;
	u_int			 i;

	sc = screen_fromroot(e->root);
	cc = client_current();

	keysym = XkbKeycodeToKeysym(X_Dpy, e->keycode, 0, 0);
	for (i = 0; i < nitems(modkeys); i++) {
		if (keysym == modkeys[i]) {
			client_cycle_leave(sc, cc);
			break;
		}
	}
}

static void
xev_handle_clientmessage(XEvent *ee)
{
	XClientMessageEvent	*e = &ee->xclient;
	struct client_ctx	*cc;

	if ((cc = client_find(e->window)) == NULL)
		return;

	if (e->message_type == cwmh[WM_CHANGE_STATE].atom &&
	    e->format == 32 && e->data.l[0] == IconicState)
		client_hide(cc);

	if (e->message_type == ewmh[_NET_CLOSE_WINDOW].atom)
		client_send_delete(cc);
}

static void
xev_handle_randr(XEvent *ee)
{
	XRRScreenChangeNotifyEvent	*rev = (XRRScreenChangeNotifyEvent *)ee;
	struct screen_ctx		*sc;
	int				 i;

	i = XRRRootToScreen(X_Dpy, rev->root);
	TAILQ_FOREACH(sc, &Screenq, entry) {
		if (sc->which == i) {
			XRRUpdateConfiguration(ee);
			screen_update_geometry(sc);
		}
	}
}

/*
 * Called when the keymap has changed.
 * Ungrab all keys, reload keymap and then regrab
 */
static void
xev_handle_mappingnotify(XEvent *ee)
{
	XMappingEvent		*e = &ee->xmapping;
	struct keybinding	*kb;

	TAILQ_FOREACH(kb, &Conf.keybindingq, entry)
		conf_ungrab(&Conf, kb);

	XRefreshKeyboardMapping(e);

	TAILQ_FOREACH(kb, &Conf.keybindingq, entry)
		conf_grab(&Conf, kb);
}

static void
xev_handle_expose(XEvent *ee)
{
	XExposeEvent		*e = &ee->xexpose;
	struct client_ctx	*cc;

	if ((cc = client_find(e->window)) != NULL && e->count == 0)
		client_draw_border(cc);
}

volatile sig_atomic_t	xev_quit = 0;

void
xev_loop(void)
{
	XEvent		 e;

	while (xev_quit == 0) {
		XNextEvent(X_Dpy, &e);
		if (e.type - Randr_ev == RRScreenChangeNotify)
			xev_handle_randr(&e);
		else if (e.type < LASTEvent && xev_handlers[e.type] != NULL)
			(*xev_handlers[e.type])(&e);
	}
}