event.c (view raw)
1/* (C)opyright MMVI 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[NFUNCS])(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) && (ev->button == Button1))
135 togglemode(NULL);
136 }
137 else if((c = getclient(ev->window))) {
138 focus(c);
139 if(CLEANMASK(ev->state) != MODKEY)
140 return;
141 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
142 restack();
143 movemouse(c);
144 }
145 else if(ev->button == Button2)
146 zoom(NULL);
147 else if(ev->button == Button3 && (arrange == dofloat || c->isfloat) &&
148 !c->isfixed) {
149 restack();
150 resizemouse(c);
151 }
152 }
153}
154
155static void
156configurerequest(XEvent *e) {
157 unsigned long newmask;
158 Client *c;
159 XConfigureRequestEvent *ev = &e->xconfigurerequest;
160 XWindowChanges wc;
161
162 if((c = getclient(ev->window))) {
163 c->ismax = False;
164 gravitate(c, True);
165 if(ev->value_mask & CWX)
166 c->x = ev->x;
167 if(ev->value_mask & CWY)
168 c->y = ev->y;
169 if(ev->value_mask & CWWidth)
170 c->w = ev->width;
171 if(ev->value_mask & CWHeight)
172 c->h = ev->height;
173 if(ev->value_mask & CWBorderWidth)
174 c->border = ev->border_width;
175 gravitate(c, False);
176 wc.x = c->x;
177 wc.y = c->y;
178 wc.width = c->w;
179 wc.height = c->h;
180 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
181 if(newmask)
182 XConfigureWindow(dpy, c->win, newmask, &wc);
183 else
184 configure(c);
185 XSync(dpy, False);
186 if(c->isfloat) {
187 resize(c, False, TopLeft);
188 if(!isvisible(c))
189 ban(c);
190 }
191 else
192 arrange();
193 }
194 else {
195 wc.x = ev->x;
196 wc.y = ev->y;
197 wc.width = ev->width;
198 wc.height = ev->height;
199 wc.border_width = ev->border_width;
200 wc.sibling = ev->above;
201 wc.stack_mode = ev->detail;
202 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
203 XSync(dpy, False);
204 }
205}
206
207static void
208destroynotify(XEvent *e) {
209 Client *c;
210 XDestroyWindowEvent *ev = &e->xdestroywindow;
211
212 if((c = getclient(ev->window)))
213 unmanage(c);
214}
215
216static void
217enternotify(XEvent *e) {
218 Client *c;
219 XCrossingEvent *ev = &e->xcrossing;
220
221 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
222 return;
223 if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
224 focus(c);
225 else if(ev->window == root) {
226 issel = True;
227 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
228 drawall();
229 }
230}
231
232static void
233expose(XEvent *e) {
234 Client *c;
235 XExposeEvent *ev = &e->xexpose;
236
237 if(ev->count == 0) {
238 if(barwin == ev->window)
239 drawstatus();
240 else if((c = getctitle(ev->window)))
241 drawtitle(c);
242 }
243}
244
245static void
246keypress(XEvent *e) {
247 static unsigned int len = sizeof key / sizeof key[0];
248 unsigned int i, j;
249 KeySym keysym;
250 XKeyEvent *ev = &e->xkey;
251
252 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
253 for(i = 0; i < len; i++) {
254 if(keysym == key[i].keysym
255 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
256 {
257 for(j = 0; j < NFUNCS; j++)
258 if(key[i].func[j])
259 key[i].func[j](&key[i].arg);
260 return;
261 }
262 }
263}
264
265static void
266leavenotify(XEvent *e) {
267 XCrossingEvent *ev = &e->xcrossing;
268
269 if((ev->window == root) && !ev->same_screen) {
270 issel = False;
271 drawall();
272 }
273}
274
275static void
276mappingnotify(XEvent *e) {
277 XMappingEvent *ev = &e->xmapping;
278
279 XRefreshKeyboardMapping(ev);
280 if(ev->request == MappingKeyboard)
281 grabkeys();
282}
283
284static void
285maprequest(XEvent *e) {
286 static XWindowAttributes wa;
287 XMapRequestEvent *ev = &e->xmaprequest;
288
289 if(!XGetWindowAttributes(dpy, ev->window, &wa))
290 return;
291 if(wa.override_redirect) {
292 XSelectInput(dpy, ev->window,
293 (StructureNotifyMask | PropertyChangeMask));
294 return;
295 }
296 if(!getclient(ev->window))
297 manage(ev->window, &wa);
298}
299
300static void
301propertynotify(XEvent *e) {
302 Client *c;
303 Window trans;
304 XPropertyEvent *ev = &e->xproperty;
305
306 if(ev->state == PropertyDelete)
307 return; /* ignore */
308 if((c = getclient(ev->window))) {
309 if(ev->atom == wmatom[WMProtocols]) {
310 c->proto = getproto(c->win);
311 return;
312 }
313 switch (ev->atom) {
314 default: break;
315 case XA_WM_TRANSIENT_FOR:
316 XGetTransientForHint(dpy, c->win, &trans);
317 if(!c->isfloat && (c->isfloat = (trans != 0)))
318 arrange();
319 break;
320 case XA_WM_NORMAL_HINTS:
321 updatesize(c);
322 break;
323 }
324 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
325 updatetitle(c);
326 resizetitle(c);
327 drawtitle(c);
328 }
329 }
330}
331
332static void
333unmapnotify(XEvent *e) {
334 Client *c;
335 XUnmapEvent *ev = &e->xunmap;
336
337 if((c = getclient(ev->window)))
338 unmanage(c);
339}
340
341/* extern */
342
343void (*handler[LASTEvent]) (XEvent *) = {
344 [ButtonPress] = buttonpress,
345 [ConfigureRequest] = configurerequest,
346 [DestroyNotify] = destroynotify,
347 [EnterNotify] = enternotify,
348 [LeaveNotify] = leavenotify,
349 [Expose] = expose,
350 [KeyPress] = keypress,
351 [MappingNotify] = mappingnotify,
352 [MapRequest] = maprequest,
353 [PropertyNotify] = propertynotify,
354 [UnmapNotify] = unmapnotify
355};
356
357void
358grabkeys(void) {
359 static unsigned int len = sizeof key / sizeof key[0];
360 unsigned int i;
361 KeyCode code;
362
363 XUngrabKey(dpy, AnyKey, AnyModifier, root);
364 for(i = 0; i < len; i++) {
365 code = XKeysymToKeycode(dpy, key[i].keysym);
366 XGrabKey(dpy, code, key[i].mod, root, True,
367 GrabModeAsync, GrabModeAsync);
368 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
369 GrabModeAsync, GrabModeAsync);
370 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
371 GrabModeAsync, GrabModeAsync);
372 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
373 GrabModeAsync, GrabModeAsync);
374 }
375}
376
377void
378procevent(void) {
379 XEvent ev;
380
381 while(XPending(dpy)) {
382 XNextEvent(dpy, &ev);
383 if(handler[ev.type])
384 (handler[ev.type])(&ev); /* call handler */
385 }
386}