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
24movemouse(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
57static void
58resizemouse(Client *c)
59{
60 int ocx, ocy;
61 int nw, nh;
62 Corner sticky;
63 XEvent ev;
64
65 ocx = c->x;
66 ocy = c->y;
67 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
68 None, cursor[CurResize], CurrentTime) != GrabSuccess)
69 return;
70 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
71 for(;;) {
72 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
73 switch(ev.type) {
74 default: break;
75 case Expose:
76 handler[Expose](&ev);
77 break;
78 case MotionNotify:
79 XSync(dpy, False);
80 if((nw = abs(ocx - ev.xmotion.x)))
81 c->w = abs(ocx - ev.xmotion.x);
82 if((nh = abs(ocy - ev.xmotion.y)))
83 c->h = abs(ocy - ev.xmotion.y);
84 c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
85 c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
86 if(ocx <= ev.xmotion.x)
87 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
88 else
89 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
90 resize(c, True, sticky);
91 break;
92 case ButtonRelease:
93 XUngrabPointer(dpy, CurrentTime);
94 return;
95 }
96 }
97}
98
99static void
100buttonpress(XEvent *e)
101{
102 int x;
103 Arg a;
104 Client *c;
105 XButtonPressedEvent *ev = &e->xbutton;
106
107 if(barwin == ev->window) {
108 x = 0;
109 for(a.i = 0; a.i < ntags; a.i++) {
110 x += textw(tags[a.i]);
111 if(ev->x < x) {
112 switch(ev->button) {
113 case Button1:
114 if(ev->state & MODKEY)
115 tag(&a);
116 else
117 view(&a);
118 break;
119 case Button3:
120 if(ev->state & MODKEY)
121 toggletag(&a);
122 else
123 toggleview(&a);
124 break;
125 }
126 return;
127 }
128 }
129 if(ev->x < x + bmw) {
130 if(ev->button == Button1)
131 togglemode(NULL);
132 }
133 }
134 else if((c = getclient(ev->window))) {
135 focus(c);
136 if(CLEANMASK(ev->state) != MODKEY)
137 return;
138 switch(ev->button) {
139 default:
140 break;
141 case Button1:
142 if(!c->ismax && (arrange == dofloat || c->isfloat)) {
143 restack(c);
144 movemouse(c);
145 }
146 break;
147 case Button2:
148 zoom(NULL);
149 break;
150 case Button3:
151 if(!c->ismax && (arrange == dofloat || c->isfloat)) {
152 restack(c);
153 resizemouse(c);
154 }
155 break;
156 }
157 }
158}
159
160static void
161synconfig(Client *c, int x, int y, int w, int h, unsigned int border)
162{
163 XEvent synev;
164
165 synev.type = ConfigureNotify;
166 synev.xconfigure.display = dpy;
167 synev.xconfigure.event = c->win;
168 synev.xconfigure.window = c->win;
169 synev.xconfigure.x = x;
170 synev.xconfigure.y = y;
171 synev.xconfigure.width = w;
172 synev.xconfigure.height = h;
173 synev.xconfigure.border_width = border;
174 synev.xconfigure.above = None;
175 XSendEvent(dpy, c->win, True, NoEventMask, &synev);
176}
177
178static void
179configurerequest(XEvent *e)
180{
181 unsigned long newmask;
182 Client *c;
183 XConfigureRequestEvent *ev = &e->xconfigurerequest;
184 XWindowChanges wc;
185
186 if((c = getclient(ev->window))) {
187 if(!c->isfloat && (arrange != dofloat) && c->ismax) {
188 synconfig(c, sx, sy + bh, sw - 2, sh - 2 - bh, ev->border_width);
189 XSync(dpy, False);
190 return;
191 }
192 gravitate(c, True);
193 if(ev->value_mask & CWX)
194 c->x = ev->x;
195 if(ev->value_mask & CWY)
196 c->y = ev->y;
197 if(ev->value_mask & CWWidth)
198 c->w = ev->width;
199 if(ev->value_mask & CWHeight)
200 c->h = ev->height;
201 if(ev->value_mask & CWBorderWidth)
202 c->border = ev->border_width;
203 gravitate(c, False);
204 wc.x = c->x;
205 wc.y = c->y;
206 wc.width = c->w;
207 wc.height = c->h;
208 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
209 if(newmask)
210 XConfigureWindow(dpy, c->win, newmask, &wc);
211 else
212 synconfig(c, c->x, c->y, c->w, c->h, c->border);
213 XSync(dpy, False);
214 if(c->isfloat)
215 resize(c, False, TopLeft);
216 else
217 arrange(NULL);
218 }
219 else {
220 wc.x = ev->x;
221 wc.y = ev->y;
222 wc.width = ev->width;
223 wc.height = ev->height;
224 wc.border_width = ev->border_width;
225 wc.sibling = ev->above;
226 wc.stack_mode = ev->detail;
227 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
228 XSync(dpy, False);
229 }
230}
231
232static void
233destroynotify(XEvent *e)
234{
235 Client *c;
236 XDestroyWindowEvent *ev = &e->xdestroywindow;
237
238 if((c = getclient(ev->window)))
239 unmanage(c);
240}
241
242static void
243enternotify(XEvent *e)
244{
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)))
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{
263 Client *c;
264 XExposeEvent *ev = &e->xexpose;
265
266 if(ev->count == 0) {
267 if(barwin == ev->window)
268 drawstatus();
269 else if((c = getctitle(ev->window)))
270 drawtitle(c);
271 }
272}
273
274static void
275keypress(XEvent *e)
276{
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{
297 XCrossingEvent *ev = &e->xcrossing;
298
299 if((ev->window == root) && !ev->same_screen) {
300 issel = False;
301 drawall();
302 }
303}
304
305static void
306mappingnotify(XEvent *e)
307{
308 XMappingEvent *ev = &e->xmapping;
309
310 XRefreshKeyboardMapping(ev);
311 if(ev->request == MappingKeyboard)
312 grabkeys();
313}
314
315static void
316maprequest(XEvent *e)
317{
318 static XWindowAttributes wa;
319 XMapRequestEvent *ev = &e->xmaprequest;
320
321 if(!XGetWindowAttributes(dpy, ev->window, &wa))
322 return;
323
324 if(wa.override_redirect) {
325 XSelectInput(dpy, ev->window,
326 (StructureNotifyMask | PropertyChangeMask));
327 return;
328 }
329
330 if(!getclient(ev->window))
331 manage(ev->window, &wa);
332}
333
334static void
335propertynotify(XEvent *e)
336{
337 Client *c;
338 Window trans;
339 XPropertyEvent *ev = &e->xproperty;
340
341 if(ev->state == PropertyDelete)
342 return; /* ignore */
343
344 if((c = getclient(ev->window))) {
345 if(ev->atom == wmatom[WMProtocols]) {
346 c->proto = getproto(c->win);
347 return;
348 }
349 switch (ev->atom) {
350 default: break;
351 case XA_WM_TRANSIENT_FOR:
352 XGetTransientForHint(dpy, c->win, &trans);
353 if(!c->isfloat && (c->isfloat = (trans != 0)))
354 arrange(NULL);
355 break;
356 case XA_WM_NORMAL_HINTS:
357 setsize(c);
358 break;
359 }
360 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
361 settitle(c);
362 drawtitle(c);
363 }
364 }
365}
366
367static void
368unmapnotify(XEvent *e)
369{
370 Client *c;
371 XUnmapEvent *ev = &e->xunmap;
372
373 if((c = getclient(ev->window)))
374 unmanage(c);
375}
376
377/* extern */
378
379void (*handler[LASTEvent]) (XEvent *) = {
380 [ButtonPress] = buttonpress,
381 [ConfigureRequest] = configurerequest,
382 [DestroyNotify] = destroynotify,
383 [EnterNotify] = enternotify,
384 [LeaveNotify] = leavenotify,
385 [Expose] = expose,
386 [KeyPress] = keypress,
387 [MappingNotify] = mappingnotify,
388 [MapRequest] = maprequest,
389 [PropertyNotify] = propertynotify,
390 [UnmapNotify] = unmapnotify
391};
392
393void
394grabkeys()
395{
396 static unsigned int len = sizeof(key) / sizeof(key[0]);
397 unsigned int i;
398 KeyCode code;
399
400 XUngrabKey(dpy, AnyKey, AnyModifier, root);
401 for(i = 0; i < len; i++) {
402 code = XKeysymToKeycode(dpy, key[i].keysym);
403 XGrabKey(dpy, code, key[i].mod, root, True,
404 GrabModeAsync, GrabModeAsync);
405 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
406 GrabModeAsync, GrabModeAsync);
407 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
408 GrabModeAsync, GrabModeAsync);
409 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
410 GrabModeAsync, GrabModeAsync);
411 }
412}
413
414void
415procevent()
416{
417 XEvent ev;
418
419 while(XPending(dpy)) {
420 XNextEvent(dpy, &ev);
421 if(handler[ev.type])
422 (handler[ev.type])(&ev); /* call handler */
423 }
424}
425