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