event.c (view raw)
1/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
3 */
4#include "dwm.h"
5#include <stdlib.h>
6#include <X11/keysym.h>
7#include <X11/Xatom.h>
8
9/* static */
10
11typedef struct {
12 unsigned long mod;
13 KeySym keysym;
14 void (*func)(Arg *arg);
15 Arg arg;
16} Key;
17
18KEYS
19
20#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
21#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
22
23static void
24movemouse(Client *c) {
25 int x1, y1, ocx, ocy, di;
26 unsigned int dui;
27 Window dummy;
28 XEvent ev;
29
30 ocx = c->x;
31 ocy = c->y;
32 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
33 None, cursor[CurMove], CurrentTime) != GrabSuccess)
34 return;
35 c->ismax = False;
36 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
37 for(;;) {
38 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
39 switch (ev.type) {
40 case ButtonRelease:
41 resize(c, True, TopLeft);
42 XUngrabPointer(dpy, CurrentTime);
43 return;
44 case Expose:
45 handler[Expose](&ev);
46 break;
47 case MotionNotify:
48 XSync(dpy, False);
49 c->x = ocx + (ev.xmotion.x - x1);
50 c->y = ocy + (ev.xmotion.y - y1);
51 if(abs(wax + c->x) < SNAP)
52 c->x = wax;
53 else if(abs((wax + waw) - (c->x + c->w)) < SNAP)
54 c->x = wax + waw - c->w - 2 * BORDERPX;
55 if(abs(way - c->y) < SNAP)
56 c->y = way;
57 else if(abs((way + wah) - (c->y + c->h)) < SNAP)
58 c->y = way + wah - c->h - 2 * BORDERPX;
59 resize(c, False, TopLeft);
60 break;
61 }
62 }
63}
64
65static void
66resizemouse(Client *c) {
67 int ocx, ocy;
68 int nw, nh;
69 Corner sticky;
70 XEvent ev;
71
72 ocx = c->x;
73 ocy = c->y;
74 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
75 None, cursor[CurResize], CurrentTime) != GrabSuccess)
76 return;
77 c->ismax = False;
78 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
79 for(;;) {
80 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
81 switch(ev.type) {
82 case ButtonRelease:
83 resize(c, True, TopLeft);
84 XUngrabPointer(dpy, CurrentTime);
85 return;
86 case Expose:
87 handler[Expose](&ev);
88 break;
89 case MotionNotify:
90 XSync(dpy, False);
91 if((nw = abs(ocx - ev.xmotion.x)))
92 c->w = nw;
93 if((nh = abs(ocy - ev.xmotion.y)))
94 c->h = nh;
95 c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
96 c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
97 if(ocx <= ev.xmotion.x)
98 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
99 else
100 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
101 resize(c, True, sticky);
102 break;
103 }
104 }
105}
106
107static void
108buttonpress(XEvent *e) {
109 int x;
110 Arg a;
111 Client *c;
112 XButtonPressedEvent *ev = &e->xbutton;
113
114 if(barwin == ev->window) {
115 x = 0;
116 for(a.i = 0; a.i < ntags; a.i++) {
117 x += textw(tags[a.i]);
118 if(ev->x < x) {
119 if(ev->button == Button1) {
120 if(ev->state & MODKEY)
121 tag(&a);
122 else
123 view(&a);
124 }
125 else if(ev->button == Button3) {
126 if(ev->state & MODKEY)
127 toggletag(&a);
128 else
129 toggleview(&a);
130 }
131 return;
132 }
133 }
134 if(ev->x < x + bmw)
135 switch(ev->button) {
136 case Button1:
137 togglemode(NULL);
138 break;
139 case Button4:
140 a.i = 1;
141 incnmaster(&a);
142 break;
143 case Button5:
144 a.i = -1;
145 incnmaster(&a);
146 break;
147 }
148 }
149 else if((c = getclient(ev->window))) {
150 focus(c);
151 if(CLEANMASK(ev->state) != MODKEY)
152 return;
153 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
154 restack();
155 movemouse(c);
156 }
157 else if(ev->button == Button2)
158 zoom(NULL);
159 else if(ev->button == Button3 && (arrange == dofloat || c->isfloat) &&
160 !c->isfixed) {
161 restack();
162 resizemouse(c);
163 }
164 }
165}
166
167static void
168configurerequest(XEvent *e) {
169 unsigned long newmask;
170 Client *c;
171 XConfigureRequestEvent *ev = &e->xconfigurerequest;
172 XWindowChanges wc;
173
174 if((c = getclient(ev->window))) {
175 c->ismax = False;
176 if(ev->value_mask & CWX)
177 c->x = ev->x;
178 if(ev->value_mask & CWY)
179 c->y = ev->y;
180 if(ev->value_mask & CWWidth)
181 c->w = ev->width;
182 if(ev->value_mask & CWHeight)
183 c->h = ev->height;
184 if(ev->value_mask & CWBorderWidth)
185 c->border = ev->border_width;
186 wc.x = c->x;
187 wc.y = c->y;
188 wc.width = c->w;
189 wc.height = c->h;
190 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
191 if(newmask)
192 XConfigureWindow(dpy, c->win, newmask, &wc);
193 else
194 configure(c);
195 XSync(dpy, False);
196 if(c->isfloat) {
197 resize(c, False, TopLeft);
198 if(!isvisible(c))
199 ban(c);
200 }
201 else
202 arrange();
203 }
204 else {
205 wc.x = ev->x;
206 wc.y = ev->y;
207 wc.width = ev->width;
208 wc.height = ev->height;
209 wc.border_width = ev->border_width;
210 wc.sibling = ev->above;
211 wc.stack_mode = ev->detail;
212 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
213 XSync(dpy, False);
214 }
215}
216
217static void
218destroynotify(XEvent *e) {
219 Client *c;
220 XDestroyWindowEvent *ev = &e->xdestroywindow;
221
222 if((c = getclient(ev->window)))
223 unmanage(c);
224}
225
226static void
227enternotify(XEvent *e) {
228 Client *c;
229 XCrossingEvent *ev = &e->xcrossing;
230
231 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
232 return;
233 if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
234 focus(c);
235 else if(ev->window == root) {
236 issel = True;
237 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
238 drawall();
239 }
240}
241
242static void
243expose(XEvent *e) {
244 Client *c;
245 XExposeEvent *ev = &e->xexpose;
246
247 if(ev->count == 0) {
248 if(barwin == ev->window)
249 drawstatus();
250 else if((c = getctitle(ev->window)))
251 drawclient(c);
252 }
253}
254
255static void
256keypress(XEvent *e) {
257 static unsigned int len = sizeof key / sizeof key[0];
258 unsigned int i;
259 KeySym keysym;
260 XKeyEvent *ev = &e->xkey;
261
262 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
263 for(i = 0; i < len; i++) {
264 if(keysym == key[i].keysym
265 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
266 {
267 if(key[i].func)
268 key[i].func(&key[i].arg);
269 }
270 }
271}
272
273static void
274leavenotify(XEvent *e) {
275 XCrossingEvent *ev = &e->xcrossing;
276
277 if((ev->window == root) && !ev->same_screen) {
278 issel = False;
279 drawall();
280 }
281}
282
283static void
284mappingnotify(XEvent *e) {
285 XMappingEvent *ev = &e->xmapping;
286
287 XRefreshKeyboardMapping(ev);
288 if(ev->request == MappingKeyboard)
289 grabkeys();
290}
291
292static void
293maprequest(XEvent *e) {
294 static XWindowAttributes wa;
295 XMapRequestEvent *ev = &e->xmaprequest;
296
297 if(!XGetWindowAttributes(dpy, ev->window, &wa))
298 return;
299 if(wa.override_redirect) {
300 XSelectInput(dpy, ev->window,
301 (StructureNotifyMask | PropertyChangeMask));
302 return;
303 }
304 if(!getclient(ev->window))
305 manage(ev->window, &wa);
306}
307
308static void
309propertynotify(XEvent *e) {
310 Client *c;
311 Window trans;
312 XPropertyEvent *ev = &e->xproperty;
313
314 if(ev->state == PropertyDelete)
315 return; /* ignore */
316 if((c = getclient(ev->window))) {
317 if(ev->atom == wmatom[WMProtocols]) {
318 c->proto = getproto(c->win);
319 return;
320 }
321 switch (ev->atom) {
322 default: break;
323 case XA_WM_TRANSIENT_FOR:
324 XGetTransientForHint(dpy, c->win, &trans);
325 if(!c->isfloat && (c->isfloat = (trans != 0)))
326 arrange();
327 break;
328 case XA_WM_NORMAL_HINTS:
329 updatesizehints(c);
330 break;
331 }
332 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
333 updatetitle(c);
334 resizetitle(c);
335 drawclient(c);
336 }
337 }
338}
339
340static void
341unmapnotify(XEvent *e) {
342 Client *c;
343 XUnmapEvent *ev = &e->xunmap;
344
345 if((c = getclient(ev->window)))
346 unmanage(c);
347}
348
349/* extern */
350
351void (*handler[LASTEvent]) (XEvent *) = {
352 [ButtonPress] = buttonpress,
353 [ConfigureRequest] = configurerequest,
354 [DestroyNotify] = destroynotify,
355 [EnterNotify] = enternotify,
356 [LeaveNotify] = leavenotify,
357 [Expose] = expose,
358 [KeyPress] = keypress,
359 [MappingNotify] = mappingnotify,
360 [MapRequest] = maprequest,
361 [PropertyNotify] = propertynotify,
362 [UnmapNotify] = unmapnotify
363};
364
365void
366grabkeys(void) {
367 static unsigned int len = sizeof key / sizeof key[0];
368 unsigned int i;
369 KeyCode code;
370
371 XUngrabKey(dpy, AnyKey, AnyModifier, root);
372 for(i = 0; i < len; i++) {
373 code = XKeysymToKeycode(dpy, key[i].keysym);
374 XGrabKey(dpy, code, key[i].mod, root, True,
375 GrabModeAsync, GrabModeAsync);
376 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
377 GrabModeAsync, GrabModeAsync);
378 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
379 GrabModeAsync, GrabModeAsync);
380 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
381 GrabModeAsync, GrabModeAsync);
382 }
383}
384
385void
386procevent(void) {
387 XEvent ev;
388
389 while(XPending(dpy)) {
390 XNextEvent(dpy, &ev);
391 if(handler[ev.type])
392 (handler[ev.type])(&ev); /* call handler */
393 }
394}