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