event.c (view raw)
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
12typedef struct {
13 unsigned long mod;
14 KeySym keysym;
15 void (*func)(Arg *arg);
16 Arg arg;
17} Key;
18
19KEYS
20
21#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
22
23static void
24synconfig(Client *c, int x, int y, int w, int h, unsigned int border) {
25 XEvent synev;
26
27 synev.type = ConfigureNotify;
28 synev.xconfigure.display = dpy;
29 synev.xconfigure.event = c->win;
30 synev.xconfigure.window = c->win;
31 synev.xconfigure.x = x;
32 synev.xconfigure.y = y;
33 synev.xconfigure.width = w;
34 synev.xconfigure.height = h;
35 synev.xconfigure.border_width = border;
36 synev.xconfigure.above = None;
37 XSendEvent(dpy, c->win, True, NoEventMask, &synev);
38}
39
40static void
41movemouse(Client *c) {
42 int x1, y1, ocx, ocy, di;
43 unsigned int dui;
44 Window dummy;
45 XEvent ev;
46
47 ocx = c->x;
48 ocy = c->y;
49 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
50 None, cursor[CurMove], CurrentTime) != GrabSuccess)
51 return;
52 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
53 for(;;) {
54 XMaskEvent(dpy, MOUSEMASK | ExposureMask | StructureNotifyMask, &ev);
55 switch (ev.type) {
56 default:
57 break;
58 case ConfigureRequest:
59 synconfig(c, c->x, c->y, c->w, c->h, ev.xconfigure.border_width);
60 XSync(dpy, False);
61 break;
62 case Expose:
63 handler[Expose](&ev);
64 break;
65 case MotionNotify:
66 XSync(dpy, False);
67 c->x = ocx + (ev.xmotion.x - x1);
68 c->y = ocy + (ev.xmotion.y - y1);
69 resize(c, False, TopLeft);
70 break;
71 case ButtonRelease:
72 XUngrabPointer(dpy, CurrentTime);
73 return;
74 case DestroyNotify:
75 case UnmapNotify:
76 XUngrabPointer(dpy, CurrentTime);
77 handler[ev.type](&ev);
78 return;
79 }
80 }
81}
82
83static void
84resizemouse(Client *c) {
85 int ocx, ocy;
86 int nw, nh;
87 Corner sticky;
88 XEvent ev;
89
90 ocx = c->x;
91 ocy = c->y;
92 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
93 None, cursor[CurResize], CurrentTime) != GrabSuccess)
94 return;
95 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
96 for(;;) {
97 XMaskEvent(dpy, MOUSEMASK | ExposureMask | StructureNotifyMask, &ev);
98 switch(ev.type) {
99 default:
100 break;
101 case ConfigureRequest:
102 synconfig(c, c->x, c->y, c->w, c->h, ev.xconfigure.border_width);
103 XSync(dpy, False);
104 break;
105 case Expose:
106 handler[Expose](&ev);
107 break;
108 case MotionNotify:
109 XSync(dpy, False);
110 if((nw = abs(ocx - ev.xmotion.x)))
111 c->w = abs(ocx - ev.xmotion.x);
112 if((nh = abs(ocy - ev.xmotion.y)))
113 c->h = abs(ocy - ev.xmotion.y);
114 c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
115 c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
116 if(ocx <= ev.xmotion.x)
117 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
118 else
119 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
120 resize(c, True, sticky);
121 break;
122 case ButtonRelease:
123 XUngrabPointer(dpy, CurrentTime);
124 return;
125 case DestroyNotify:
126 case UnmapNotify:
127 XUngrabPointer(dpy, CurrentTime);
128 handler[ev.type](&ev);
129 return;
130 }
131 }
132}
133
134static void
135buttonpress(XEvent *e) {
136 int x;
137 Arg a;
138 Client *c;
139 XButtonPressedEvent *ev = &e->xbutton;
140
141 if(barwin == ev->window) {
142 x = 0;
143 for(a.i = 0; a.i < ntags; a.i++) {
144 x += textw(tags[a.i]);
145 if(ev->x < x) {
146 if(ev->button == Button1) {
147 if(ev->state & MODKEY)
148 tag(&a);
149 else
150 view(&a);
151 }
152 else if(ev->button == Button3) {
153 if(ev->state & MODKEY)
154 toggletag(&a);
155 else
156 toggleview(&a);
157 }
158 return;
159 }
160 }
161 if(ev->x < x + bmw) {
162 if(ev->button == Button1)
163 togglemode(NULL);
164 }
165 }
166 else if((c = getclient(ev->window))) {
167 focus(c);
168 if(CLEANMASK(ev->state) != MODKEY)
169 return;
170 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
171 restack(c);
172 movemouse(c);
173 }
174 else if(ev->button == Button2)
175 zoom(NULL);
176 else if(ev->button == Button3 && (arrange == dofloat || c->isfloat)) {
177 restack(c);
178 resizemouse(c);
179 }
180 }
181}
182
183static void
184configurerequest(XEvent *e) {
185 unsigned long newmask;
186 Client *c;
187 XConfigureRequestEvent *ev = &e->xconfigurerequest;
188 XWindowChanges wc;
189
190 if((c = getclient(ev->window))) {
191 if((c == sel) && !c->isfloat && (arrange != dofloat)) {
192 synconfig(c, sx, sy + bh, sw - 2, sh - 2 - bh, ev->border_width);
193 XSync(dpy, False);
194 return;
195 }
196 gravitate(c, True);
197 if(ev->value_mask & CWX)
198 c->x = ev->x;
199 if(ev->value_mask & CWY)
200 c->y = ev->y;
201 if(ev->value_mask & CWWidth)
202 c->w = ev->width;
203 if(ev->value_mask & CWHeight)
204 c->h = ev->height;
205 if(ev->value_mask & CWBorderWidth)
206 c->border = ev->border_width;
207 gravitate(c, False);
208 wc.x = c->x;
209 wc.y = c->y;
210 wc.width = c->w;
211 wc.height = c->h;
212 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
213 if(newmask)
214 XConfigureWindow(dpy, c->win, newmask, &wc);
215 else
216 synconfig(c, c->x, c->y, c->w, c->h, c->border);
217 XSync(dpy, False);
218 if(c->isfloat)
219 resize(c, False, TopLeft);
220 else
221 arrange(NULL);
222 }
223 else {
224 wc.x = ev->x;
225 wc.y = ev->y;
226 wc.width = ev->width;
227 wc.height = ev->height;
228 wc.border_width = ev->border_width;
229 wc.sibling = ev->above;
230 wc.stack_mode = ev->detail;
231 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
232 XSync(dpy, False);
233 }
234}
235
236static void
237destroynotify(XEvent *e) {
238 Client *c;
239 XDestroyWindowEvent *ev = &e->xdestroywindow;
240
241 if((c = getclient(ev->window)))
242 unmanage(c);
243}
244
245static void
246enternotify(XEvent *e) {
247 Client *c;
248 XCrossingEvent *ev = &e->xcrossing;
249
250 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
251 return;
252
253 if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
254 focus(c);
255 else if(ev->window == root) {
256 issel = True;
257 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
258 drawall();
259 }
260}
261
262static void
263expose(XEvent *e) {
264 Client *c;
265 XExposeEvent *ev = &e->xexpose;
266
267 if(ev->count == 0) {
268 if(barwin == ev->window)
269 drawstatus();
270 else if((c = getctitle(ev->window)))
271 drawtitle(c);
272 }
273}
274
275static void
276keypress(XEvent *e) {
277 static unsigned int len = sizeof(key) / sizeof(key[0]);
278 unsigned int i;
279 KeySym keysym;
280 XKeyEvent *ev = &e->xkey;
281
282 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
283 for(i = 0; i < len; i++) {
284 if(keysym == key[i].keysym
285 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
286 {
287 if(key[i].func)
288 key[i].func(&key[i].arg);
289 return;
290 }
291 }
292}
293
294static void
295leavenotify(XEvent *e) {
296 XCrossingEvent *ev = &e->xcrossing;
297
298 if((ev->window == root) && !ev->same_screen) {
299 issel = False;
300 drawall();
301 }
302}
303
304static void
305mappingnotify(XEvent *e) {
306 XMappingEvent *ev = &e->xmapping;
307
308 XRefreshKeyboardMapping(ev);
309 if(ev->request == MappingKeyboard)
310 grabkeys();
311}
312
313static void
314maprequest(XEvent *e) {
315 static XWindowAttributes wa;
316 XMapRequestEvent *ev = &e->xmaprequest;
317
318 if(!XGetWindowAttributes(dpy, ev->window, &wa))
319 return;
320
321 if(wa.override_redirect) {
322 XSelectInput(dpy, ev->window,
323 (StructureNotifyMask | PropertyChangeMask));
324 return;
325 }
326
327 if(!getclient(ev->window))
328 manage(ev->window, &wa);
329}
330
331static void
332propertynotify(XEvent *e) {
333 Client *c;
334 Window trans;
335 XPropertyEvent *ev = &e->xproperty;
336
337 if(ev->state == PropertyDelete)
338 return; /* ignore */
339
340 if((c = getclient(ev->window))) {
341 if(ev->atom == wmatom[WMProtocols]) {
342 c->proto = getproto(c->win);
343 return;
344 }
345 switch (ev->atom) {
346 default: break;
347 case XA_WM_TRANSIENT_FOR:
348 XGetTransientForHint(dpy, c->win, &trans);
349 if(!c->isfloat && (c->isfloat = (trans != 0)))
350 arrange(NULL);
351 break;
352 case XA_WM_NORMAL_HINTS:
353 updatesize(c);
354 break;
355 }
356 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
357 updatetitle(c);
358 drawtitle(c);
359 }
360 }
361}
362
363static void
364unmapnotify(XEvent *e) {
365 Client *c;
366 XUnmapEvent *ev = &e->xunmap;
367
368 if((c = getclient(ev->window)))
369 unmanage(c);
370}
371
372/* extern */
373
374void (*handler[LASTEvent]) (XEvent *) = {
375 [ButtonPress] = buttonpress,
376 [ConfigureRequest] = configurerequest,
377 [DestroyNotify] = destroynotify,
378 [EnterNotify] = enternotify,
379 [LeaveNotify] = leavenotify,
380 [Expose] = expose,
381 [KeyPress] = keypress,
382 [MappingNotify] = mappingnotify,
383 [MapRequest] = maprequest,
384 [PropertyNotify] = propertynotify,
385 [UnmapNotify] = unmapnotify
386};
387
388void
389grabkeys() {
390 static unsigned int len = sizeof(key) / sizeof(key[0]);
391 unsigned int i;
392 KeyCode code;
393
394 XUngrabKey(dpy, AnyKey, AnyModifier, root);
395 for(i = 0; i < len; i++) {
396 code = XKeysymToKeycode(dpy, key[i].keysym);
397 XGrabKey(dpy, code, key[i].mod, root, True,
398 GrabModeAsync, GrabModeAsync);
399 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
400 GrabModeAsync, GrabModeAsync);
401 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
402 GrabModeAsync, GrabModeAsync);
403 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
404 GrabModeAsync, GrabModeAsync);
405 }
406}
407
408void
409procevent() {
410 XEvent ev;
411
412 while(XPending(dpy)) {
413 XNextEvent(dpy, &ev);
414 if(handler[ev.type])
415 (handler[ev.type])(&ev); /* call handler */
416 }
417}