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