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 Client *c;
170 XConfigureRequestEvent *ev = &e->xconfigurerequest;
171 XWindowChanges wc;
172
173 if((c = getclient(ev->window))) {
174 c->ismax = False;
175 c->border = (ev->value_mask & CWBorderWidth) ? ev->border_width : c->border;
176 if((!c->isfloat && (arrange != dofloat))
177 || ((ev->value_mask & (CWX | CWY)) && !(ev->value_mask & (CWWidth | CWHeight))))
178 configure(c);
179 else {
180 c->x = (ev->value_mask & CWX) ? ev->x : c->x;
181 c->y = (ev->value_mask & CWY) ? ev->y : c->y;
182 c->w = (ev->value_mask & CWWidth) ? ev->width : c->w;
183 c->h = (ev->value_mask & CWHeight) ? ev->height : c->h;
184 resize(c, False);
185 if(!isvisible(c))
186 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
187 }
188 }
189 else {
190 wc.x = ev->x;
191 wc.y = ev->y;
192 wc.width = ev->width;
193 wc.height = ev->height;
194 wc.border_width = ev->border_width;
195 wc.sibling = ev->above;
196 wc.stack_mode = ev->detail;
197 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
198 }
199 XSync(dpy, False);
200}
201
202static void
203destroynotify(XEvent *e) {
204 Client *c;
205 XDestroyWindowEvent *ev = &e->xdestroywindow;
206
207 if((c = getclient(ev->window)))
208 unmanage(c);
209}
210
211static void
212enternotify(XEvent *e) {
213 Client *c;
214 XCrossingEvent *ev = &e->xcrossing;
215
216 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
217 return;
218 if((c = getclient(ev->window)) && isvisible(c))
219 focus(c);
220 else if(ev->window == root) {
221 selscreen = True;
222 for(c = stack; c && !isvisible(c); c = c->snext);
223 focus(c);
224 }
225}
226
227static void
228expose(XEvent *e) {
229 XExposeEvent *ev = &e->xexpose;
230
231 if(ev->count == 0) {
232 if(barwin == ev->window)
233 drawstatus();
234 }
235}
236
237static void
238keypress(XEvent *e) {
239 static unsigned int len = sizeof key / sizeof key[0];
240 unsigned int i;
241 KeySym keysym;
242 XKeyEvent *ev = &e->xkey;
243
244 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
245 for(i = 0; i < len; i++) {
246 if(keysym == key[i].keysym
247 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
248 {
249 if(key[i].func)
250 key[i].func(&key[i].arg);
251 }
252 }
253}
254
255static void
256leavenotify(XEvent *e) {
257 XCrossingEvent *ev = &e->xcrossing;
258
259 if((ev->window == root) && !ev->same_screen) {
260 selscreen = False;
261 focus(NULL);
262 }
263}
264
265static void
266mappingnotify(XEvent *e) {
267 XMappingEvent *ev = &e->xmapping;
268
269 XRefreshKeyboardMapping(ev);
270 if(ev->request == MappingKeyboard)
271 grabkeys();
272}
273
274static void
275maprequest(XEvent *e) {
276 static XWindowAttributes wa;
277 XMapRequestEvent *ev = &e->xmaprequest;
278
279 if(!XGetWindowAttributes(dpy, ev->window, &wa))
280 return;
281 if(wa.override_redirect)
282 return;
283 if(!getclient(ev->window))
284 manage(ev->window, &wa);
285}
286
287static void
288propertynotify(XEvent *e) {
289 Client *c;
290 Window trans;
291 XPropertyEvent *ev = &e->xproperty;
292
293 if(ev->state == PropertyDelete)
294 return; /* ignore */
295 if((c = getclient(ev->window))) {
296 switch (ev->atom) {
297 default: break;
298 case XA_WM_TRANSIENT_FOR:
299 XGetTransientForHint(dpy, c->win, &trans);
300 if(!c->isfloat && (c->isfloat = (trans != 0)))
301 arrange();
302 break;
303 case XA_WM_NORMAL_HINTS:
304 updatesizehints(c);
305 break;
306 }
307 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
308 updatetitle(c);
309 if(c == sel)
310 drawstatus();
311 }
312 }
313}
314
315static void
316unmapnotify(XEvent *e) {
317 Client *c;
318 XUnmapEvent *ev = &e->xunmap;
319
320 if((c = getclient(ev->window)))
321 unmanage(c);
322}
323
324/* extern */
325
326void (*handler[LASTEvent]) (XEvent *) = {
327 [ButtonPress] = buttonpress,
328 [ConfigureRequest] = configurerequest,
329 [DestroyNotify] = destroynotify,
330 [EnterNotify] = enternotify,
331 [LeaveNotify] = leavenotify,
332 [Expose] = expose,
333 [KeyPress] = keypress,
334 [MappingNotify] = mappingnotify,
335 [MapRequest] = maprequest,
336 [PropertyNotify] = propertynotify,
337 [UnmapNotify] = unmapnotify
338};
339
340void
341grabkeys(void) {
342 static unsigned int len = sizeof key / sizeof key[0];
343 unsigned int i;
344 KeyCode code;
345
346 XUngrabKey(dpy, AnyKey, AnyModifier, root);
347 for(i = 0; i < len; i++) {
348 code = XKeysymToKeycode(dpy, key[i].keysym);
349 XGrabKey(dpy, code, key[i].mod, root, True,
350 GrabModeAsync, GrabModeAsync);
351 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
352 GrabModeAsync, GrabModeAsync);
353 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
354 GrabModeAsync, GrabModeAsync);
355 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
356 GrabModeAsync, GrabModeAsync);
357 }
358}
359
360void
361procevent(void) {
362 XEvent ev;
363
364 while(XPending(dpy)) {
365 XNextEvent(dpy, &ev);
366 if(handler[ev.type])
367 (handler[ev.type])(&ev); /* call handler */
368 }
369}