event.c (view raw)
1/* See LICENSE file for copyright and license details. */
2#include "dwm.h"
3#include <stdio.h>
4#include <stdlib.h>
5#include <X11/keysym.h>
6#include <X11/Xatom.h>
7
8/* static */
9
10typedef struct {
11 unsigned long mod;
12 KeySym keysym;
13 void (*func)(const char *arg);
14 const char *arg;
15} Key;
16
17KEYS
18
19#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
20#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
21
22static Client *
23getclient(Window w) {
24 Client *c;
25
26 for(c = clients; c && c->win != w; c = c->next);
27 return c;
28}
29
30static void
31movemouse(Client *c) {
32 int x1, y1, ocx, ocy, di, nx, ny;
33 unsigned int dui;
34 Window dummy;
35 XEvent ev;
36
37 ocx = nx = c->x;
38 ocy = ny = c->y;
39 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
40 None, cursor[CurMove], CurrentTime) != GrabSuccess)
41 return;
42 c->ismax = False;
43 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
44 for(;;) {
45 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
46 switch (ev.type) {
47 case ButtonRelease:
48 XUngrabPointer(dpy, CurrentTime);
49 return;
50 case ConfigureRequest:
51 case Expose:
52 case MapRequest:
53 handler[ev.type](&ev);
54 break;
55 case MotionNotify:
56 XSync(dpy, False);
57 nx = ocx + (ev.xmotion.x - x1);
58 ny = ocy + (ev.xmotion.y - y1);
59 if(abs(wax + nx) < SNAP)
60 nx = wax;
61 else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP)
62 nx = wax + waw - c->w - 2 * c->border;
63 if(abs(way - ny) < SNAP)
64 ny = way;
65 else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP)
66 ny = way + wah - c->h - 2 * c->border;
67 resize(c, nx, ny, c->w, c->h, False);
68 break;
69 }
70 }
71}
72
73static void
74resizemouse(Client *c) {
75 int ocx, ocy;
76 int nw, nh;
77 XEvent ev;
78
79 ocx = c->x;
80 ocy = c->y;
81 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
82 None, cursor[CurResize], CurrentTime) != GrabSuccess)
83 return;
84 c->ismax = False;
85 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
86 for(;;) {
87 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
88 switch(ev.type) {
89 case ButtonRelease:
90 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
91 c->w + c->border - 1, c->h + c->border - 1);
92 XUngrabPointer(dpy, CurrentTime);
93 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
94 return;
95 case ConfigureRequest:
96 case Expose:
97 case MapRequest:
98 handler[ev.type](&ev);
99 break;
100 case MotionNotify:
101 XSync(dpy, False);
102 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
103 nw = 1;
104 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
105 nh = 1;
106 resize(c, c->x, c->y, nw, nh, True);
107 break;
108 }
109 }
110}
111
112static void
113buttonpress(XEvent *e) {
114 static char buf[32];
115 unsigned int i, x;
116 Client *c;
117 XButtonPressedEvent *ev = &e->xbutton;
118
119 buf[0] = 0;
120 if(barwin == ev->window) {
121 x = 0;
122 for(i = 0; i < ntags; i++) {
123 x += textw(tags[i]);
124 if(ev->x < x) {
125 snprintf(buf, sizeof buf, "%d", i);
126 if(ev->button == Button1) {
127 if(ev->state & MODKEY)
128 tag(buf);
129 else
130 view(buf);
131 }
132 else if(ev->button == Button3) {
133 if(ev->state & MODKEY)
134 toggletag(buf);
135 else
136 toggleview(buf);
137 }
138 return;
139 }
140 }
141 if(ev->x < x + blw)
142 switch(ev->button) {
143 case Button1:
144 setlayout(NULL);
145 break;
146 }
147 }
148 else if((c = getclient(ev->window))) {
149 focus(c);
150 if(CLEANMASK(ev->state) != MODKEY)
151 return;
152 if(ev->button == Button1 && (lt->arrange == floating || c->isfloating)) {
153 restack();
154 movemouse(c);
155 }
156 else if(ev->button == Button2)
157 zoom(NULL);
158 else if(ev->button == Button3
159 && (lt->arrange == floating || c->isfloating) && !c->isfixed)
160 {
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 if(ev->value_mask & CWBorderWidth)
176 c->border = ev->border_width;
177 if(c->isfixed || c->isfloating || (lt->arrange == floating)) {
178 if(ev->value_mask & CWX)
179 c->x = ev->x;
180 if(ev->value_mask & CWY)
181 c->y = ev->y;
182 if(ev->value_mask & CWWidth)
183 c->w = ev->width;
184 if(ev->value_mask & CWHeight)
185 c->h = ev->height;
186 if((c->x + c->w) > sw && c->isfloating)
187 c->x = sw / 2 - c->w / 2; /* center in x direction */
188 if((c->y + c->h) > sh && c->isfloating)
189 c->y = sh / 2 - c->h / 2; /* center in y direction */
190 if((ev->value_mask & (CWX | CWY))
191 && !(ev->value_mask & (CWWidth | CWHeight)))
192 configure(c);
193 if(isvisible(c))
194 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
195 }
196 else
197 configure(c);
198 }
199 else {
200 wc.x = ev->x;
201 wc.y = ev->y;
202 wc.width = ev->width;
203 wc.height = ev->height;
204 wc.border_width = ev->border_width;
205 wc.sibling = ev->above;
206 wc.stack_mode = ev->detail;
207 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
208 }
209 XSync(dpy, False);
210}
211
212static void
213configurenotify(XEvent *e) {
214 XConfigureEvent *ev = &e->xconfigure;
215
216 if (ev->window == root && (ev->width != sw || ev->height != sh)) {
217 sw = ev->width;
218 sh = ev->height;
219 XFreePixmap(dpy, dc.drawable);
220 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
221 XResizeWindow(dpy, barwin, sw, bh);
222 updatebarpos();
223 lt->arrange();
224 }
225}
226
227static void
228createnotify(XEvent *e) {
229 static XWindowAttributes wa;
230 XCreateWindowEvent *ev = &e->xcreatewindow;
231
232 if(!XGetWindowAttributes(dpy, ev->window, &wa))
233 return;
234 if(wa.override_redirect)
235 return;
236 if(!getclient(ev->window) && (wa.map_state == IsViewable))
237 manage(ev->window, &wa);
238}
239
240static void
241destroynotify(XEvent *e) {
242 Client *c;
243 XDestroyWindowEvent *ev = &e->xdestroywindow;
244
245 if((c = getclient(ev->window)))
246 unmanage(c);
247}
248
249static void
250enternotify(XEvent *e) {
251 Client *c;
252 XCrossingEvent *ev = &e->xcrossing;
253
254 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
255 return;
256 if((c = getclient(ev->window)))
257 focus(c);
258 else if(ev->window == root) {
259 selscreen = True;
260 focus(NULL);
261 }
262}
263
264static void
265expose(XEvent *e) {
266 XExposeEvent *ev = &e->xexpose;
267
268 if(ev->count == 0) {
269 if(barwin == ev->window)
270 drawstatus();
271 }
272}
273
274static void
275keypress(XEvent *e) {
276 static unsigned int len = sizeof key / sizeof key[0];
277 unsigned int i;
278 KeySym keysym;
279 XKeyEvent *ev = &e->xkey;
280
281 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
282 for(i = 0; i < len; i++)
283 if(keysym == key[i].keysym
284 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
285 {
286 if(key[i].func)
287 key[i].func(key[i].arg);
288 }
289}
290
291static void
292leavenotify(XEvent *e) {
293 XCrossingEvent *ev = &e->xcrossing;
294
295 if((ev->window == root) && !ev->same_screen) {
296 selscreen = False;
297 focus(NULL);
298 }
299}
300
301static void
302mappingnotify(XEvent *e) {
303 XMappingEvent *ev = &e->xmapping;
304
305 XRefreshKeyboardMapping(ev);
306 if(ev->request == MappingKeyboard)
307 grabkeys();
308}
309
310static void
311maprequest(XEvent *e) {
312 static XWindowAttributes wa;
313 XMapRequestEvent *ev = &e->xmaprequest;
314
315 if(!XGetWindowAttributes(dpy, ev->window, &wa))
316 return;
317 if(wa.override_redirect)
318 return;
319 if(!getclient(ev->window))
320 manage(ev->window, &wa);
321}
322
323static void
324propertynotify(XEvent *e) {
325 Client *c;
326 Window trans;
327 XPropertyEvent *ev = &e->xproperty;
328
329 if(ev->state == PropertyDelete)
330 return; /* ignore */
331 if((c = getclient(ev->window))) {
332 switch (ev->atom) {
333 default: break;
334 case XA_WM_TRANSIENT_FOR:
335 XGetTransientForHint(dpy, c->win, &trans);
336 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
337 lt->arrange();
338 break;
339 case XA_WM_NORMAL_HINTS:
340 updatesizehints(c);
341 break;
342 }
343 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
344 updatetitle(c);
345 if(c == sel)
346 drawstatus();
347 }
348 }
349}
350
351static void
352unmapnotify(XEvent *e) {
353 Client *c;
354 XUnmapEvent *ev = &e->xunmap;
355
356 if((c = getclient(ev->window)))
357 unmanage(c);
358}
359
360/* extern */
361
362void (*handler[LASTEvent]) (XEvent *) = {
363 [ButtonPress] = buttonpress,
364 [ConfigureRequest] = configurerequest,
365 [ConfigureNotify] = configurenotify,
366 [CreateNotify] = createnotify,
367 [DestroyNotify] = destroynotify,
368 [EnterNotify] = enternotify,
369 [LeaveNotify] = leavenotify,
370 [Expose] = expose,
371 [KeyPress] = keypress,
372 [MappingNotify] = mappingnotify,
373 [MapRequest] = maprequest,
374 [PropertyNotify] = propertynotify,
375 [UnmapNotify] = unmapnotify
376};
377
378void
379grabkeys(void) {
380 static unsigned int len = sizeof key / sizeof key[0];
381 unsigned int i;
382 KeyCode code;
383
384 XUngrabKey(dpy, AnyKey, AnyModifier, root);
385 for(i = 0; i < len; i++) {
386 code = XKeysymToKeycode(dpy, key[i].keysym);
387 XGrabKey(dpy, code, key[i].mod, root, True,
388 GrabModeAsync, GrabModeAsync);
389 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
390 GrabModeAsync, GrabModeAsync);
391 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
392 GrabModeAsync, GrabModeAsync);
393 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
394 GrabModeAsync, GrabModeAsync);
395 }
396}