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 | SubstructureRedirectMask, &ev);
39 switch (ev.type) {
40 case ButtonRelease:
41 resize(c, True);
42 XUngrabPointer(dpy, CurrentTime);
43 return;
44 case ConfigureRequest:
45 case Expose:
46 case MapRequest:
47 handler[ev.type](&ev);
48 break;
49 case MotionNotify:
50 XSync(dpy, False);
51 c->x = ocx + (ev.xmotion.x - x1);
52 c->y = ocy + (ev.xmotion.y - y1);
53 if(abs(wax + c->x) < SNAP)
54 c->x = wax;
55 else if(abs((wax + waw) - (c->x + c->w + 2 * c->border)) < SNAP)
56 c->x = wax + waw - c->w - 2 * c->border;
57 if(abs(way - c->y) < SNAP)
58 c->y = way;
59 else if(abs((way + wah) - (c->y + c->h + 2 * c->border)) < SNAP)
60 c->y = way + wah - c->h - 2 * c->border;
61 resize(c, False);
62 break;
63 }
64 }
65}
66
67static void
68resizemouse(Client *c) {
69 int ocx, ocy;
70 int nw, nh;
71 XEvent ev;
72
73 ocx = c->x;
74 ocy = c->y;
75 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
76 None, cursor[CurResize], CurrentTime) != GrabSuccess)
77 return;
78 c->ismax = False;
79 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
80 for(;;) {
81 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
82 switch(ev.type) {
83 case ButtonRelease:
84 resize(c, True);
85 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
86 c->w + c->border - 1, c->h + c->border - 1);
87 XUngrabPointer(dpy, CurrentTime);
88 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
89 return;
90 case ConfigureRequest:
91 case Expose:
92 case MapRequest:
93 handler[ev.type](&ev);
94 break;
95 case MotionNotify:
96 XSync(dpy, False);
97 nw = ev.xmotion.x - ocx - 2 * c->border + 1;
98 c->w = nw > 0 ? nw : 1;
99 nh = ev.xmotion.y - ocy - 2 * c->border + 1;
100 c->h = nh > 0 ? nh : 1;
101 resize(c, True);
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);
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 selscreen = True;
237 for(c = stack; c && !isvisible(c); c = c->snext);
238 focus(c);
239 }
240}
241
242static void
243expose(XEvent *e) {
244 XExposeEvent *ev = &e->xexpose;
245
246 if(ev->count == 0) {
247 if(barwin == ev->window)
248 drawstatus();
249 }
250}
251
252static void
253keypress(XEvent *e) {
254 static unsigned int len = sizeof key / sizeof key[0];
255 unsigned int i;
256 KeySym keysym;
257 XKeyEvent *ev = &e->xkey;
258
259 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
260 for(i = 0; i < len; i++) {
261 if(keysym == key[i].keysym
262 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
263 {
264 if(key[i].func)
265 key[i].func(&key[i].arg);
266 }
267 }
268}
269
270static void
271leavenotify(XEvent *e) {
272 XCrossingEvent *ev = &e->xcrossing;
273
274 if((ev->window == root) && !ev->same_screen) {
275 selscreen = False;
276 focus(NULL);
277 }
278}
279
280static void
281mappingnotify(XEvent *e) {
282 XMappingEvent *ev = &e->xmapping;
283
284 XRefreshKeyboardMapping(ev);
285 if(ev->request == MappingKeyboard)
286 grabkeys();
287}
288
289static void
290maprequest(XEvent *e) {
291 static XWindowAttributes wa;
292 XMapRequestEvent *ev = &e->xmaprequest;
293
294 if(!XGetWindowAttributes(dpy, ev->window, &wa))
295 return;
296 if(wa.override_redirect)
297 return;
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 switch (ev->atom) {
312 default: break;
313 case XA_WM_TRANSIENT_FOR:
314 XGetTransientForHint(dpy, c->win, &trans);
315 if(!c->isfloat && (c->isfloat = (trans != 0)))
316 arrange();
317 break;
318 case XA_WM_NORMAL_HINTS:
319 updatesizehints(c);
320 break;
321 }
322 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
323 updatetitle(c);
324 if(c == sel)
325 drawstatus();
326 }
327 }
328}
329
330static void
331unmapnotify(XEvent *e) {
332 Client *c;
333 XUnmapEvent *ev = &e->xunmap;
334
335 if((c = getclient(ev->window)))
336 unmanage(c);
337}
338
339/* extern */
340
341void (*handler[LASTEvent]) (XEvent *) = {
342 [ButtonPress] = buttonpress,
343 [ConfigureRequest] = configurerequest,
344 [DestroyNotify] = destroynotify,
345 [EnterNotify] = enternotify,
346 [LeaveNotify] = leavenotify,
347 [Expose] = expose,
348 [KeyPress] = keypress,
349 [MappingNotify] = mappingnotify,
350 [MapRequest] = maprequest,
351 [PropertyNotify] = propertynotify,
352 [UnmapNotify] = unmapnotify
353};
354
355void
356grabkeys(void) {
357 static unsigned int len = sizeof key / sizeof key[0];
358 unsigned int i;
359 KeyCode code;
360
361 XUngrabKey(dpy, AnyKey, AnyModifier, root);
362 for(i = 0; i < len; i++) {
363 code = XKeysymToKeycode(dpy, key[i].keysym);
364 XGrabKey(dpy, code, key[i].mod, root, True,
365 GrabModeAsync, GrabModeAsync);
366 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
367 GrabModeAsync, GrabModeAsync);
368 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
369 GrabModeAsync, GrabModeAsync);
370 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
371 GrabModeAsync, GrabModeAsync);
372 }
373}
374
375void
376procevent(void) {
377 XEvent ev;
378
379 while(XPending(dpy)) {
380 XNextEvent(dpy, &ev);
381 if(handler[ev.type])
382 (handler[ev.type])(&ev); /* call handler */
383 }
384}