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 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
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)) && isvisible(c))
234 focus(c);
235 else if(ev->window == root) {
236 issel = True;
237 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
238 }
239}
240
241static void
242expose(XEvent *e) {
243 XExposeEvent *ev = &e->xexpose;
244
245 if(ev->count == 0) {
246 if(barwin == ev->window)
247 drawstatus();
248 }
249}
250
251static void
252keypress(XEvent *e) {
253 static unsigned int len = sizeof key / sizeof key[0];
254 unsigned int i;
255 KeySym keysym;
256 XKeyEvent *ev = &e->xkey;
257
258 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
259 for(i = 0; i < len; i++) {
260 if(keysym == key[i].keysym
261 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
262 {
263 if(key[i].func)
264 key[i].func(&key[i].arg);
265 }
266 }
267}
268
269static void
270leavenotify(XEvent *e) {
271 XCrossingEvent *ev = &e->xcrossing;
272
273 if((ev->window == root) && !ev->same_screen)
274 issel = False;
275}
276
277static void
278mappingnotify(XEvent *e) {
279 XMappingEvent *ev = &e->xmapping;
280
281 XRefreshKeyboardMapping(ev);
282 if(ev->request == MappingKeyboard)
283 grabkeys();
284}
285
286static void
287maprequest(XEvent *e) {
288 static XWindowAttributes wa;
289 XMapRequestEvent *ev = &e->xmaprequest;
290
291 if(!XGetWindowAttributes(dpy, ev->window, &wa))
292 return;
293 if(wa.override_redirect) {
294 XSelectInput(dpy, ev->window,
295 (StructureNotifyMask | PropertyChangeMask));
296 return;
297 }
298 if(!getclient(ev->window))
299 manage(ev->window, &wa);
300}
301
302static void
303propertynotify(XEvent *e) {
304 Client *c;
305 Window trans;
306 XPropertyEvent *ev = &e->xproperty;
307
308 if(ev->state == PropertyDelete)
309 return; /* ignore */
310 if((c = getclient(ev->window))) {
311 if(ev->atom == wmatom[WMProtocols]) {
312 c->proto = getproto(c->win);
313 return;
314 }
315 switch (ev->atom) {
316 default: break;
317 case XA_WM_TRANSIENT_FOR:
318 XGetTransientForHint(dpy, c->win, &trans);
319 if(!c->isfloat && (c->isfloat = (trans != 0)))
320 arrange();
321 break;
322 case XA_WM_NORMAL_HINTS:
323 updatesizehints(c);
324 break;
325 }
326 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
327 updatetitle(c);
328 if(c == sel)
329 drawstatus();
330 }
331 }
332}
333
334static void
335unmapnotify(XEvent *e) {
336 Client *c;
337 XUnmapEvent *ev = &e->xunmap;
338
339 if((c = getclient(ev->window)))
340 unmanage(c);
341}
342
343/* extern */
344
345void (*handler[LASTEvent]) (XEvent *) = {
346 [ButtonPress] = buttonpress,
347 [ConfigureRequest] = configurerequest,
348 [DestroyNotify] = destroynotify,
349 [EnterNotify] = enternotify,
350 [LeaveNotify] = leavenotify,
351 [Expose] = expose,
352 [KeyPress] = keypress,
353 [MappingNotify] = mappingnotify,
354 [MapRequest] = maprequest,
355 [PropertyNotify] = propertynotify,
356 [UnmapNotify] = unmapnotify
357};
358
359void
360grabkeys(void) {
361 static unsigned int len = sizeof key / sizeof key[0];
362 unsigned int i;
363 KeyCode code;
364
365 XUngrabKey(dpy, AnyKey, AnyModifier, root);
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}
378
379void
380procevent(void) {
381 XEvent ev;
382
383 while(XPending(dpy)) {
384 XNextEvent(dpy, &ev);
385 if(handler[ev.type])
386 (handler[ev.type])(&ev); /* call handler */
387 }
388}