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 else if(ev->button == Button4)
139 shiftview("-1");
140 else if(ev->button == Button5)
141 shiftview("1");
142 return;
143 }
144 }
145 if(ev->x < x + blw)
146 switch(ev->button) {
147 case Button1:
148 setlayout(NULL);
149 break;
150 }
151 else if(ev->button == Button4)
152 focusclient("-1");
153 else if(ev->button == Button5)
154 focusclient("1");
155 }
156 else if((c = getclient(ev->window))) {
157 focus(c);
158 if(CLEANMASK(ev->state) != MODKEY)
159 return;
160 if(ev->button == Button1 && (lt->arrange == floating || c->isfloating)) {
161 restack();
162 movemouse(c);
163 }
164 else if(ev->button == Button2)
165 zoom(NULL);
166 else if(ev->button == Button3
167 && (lt->arrange == floating || c->isfloating) && !c->isfixed)
168 {
169 restack();
170 resizemouse(c);
171 }
172 }
173}
174
175static void
176configurerequest(XEvent *e) {
177 Client *c;
178 XConfigureRequestEvent *ev = &e->xconfigurerequest;
179 XWindowChanges wc;
180
181 if((c = getclient(ev->window))) {
182 c->ismax = False;
183 if(ev->value_mask & CWBorderWidth)
184 c->border = ev->border_width;
185 if(c->isfixed || c->isfloating || (lt->arrange == floating)) {
186 if(ev->value_mask & CWX)
187 c->x = ev->x;
188 if(ev->value_mask & CWY)
189 c->y = ev->y;
190 if(ev->value_mask & CWWidth)
191 c->w = ev->width;
192 if(ev->value_mask & CWHeight)
193 c->h = ev->height;
194 if((c->x + c->w) > sw && c->isfloating)
195 c->x = sw / 2 - c->w / 2; /* center in x direction */
196 if((c->y + c->h) > sh && c->isfloating)
197 c->y = sh / 2 - c->h / 2; /* center in y direction */
198 if((ev->value_mask & (CWX | CWY))
199 && !(ev->value_mask & (CWWidth | CWHeight)))
200 configure(c);
201 if(isvisible(c))
202 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
203 }
204 else
205 configure(c);
206 }
207 else {
208 wc.x = ev->x;
209 wc.y = ev->y;
210 wc.width = ev->width;
211 wc.height = ev->height;
212 wc.border_width = ev->border_width;
213 wc.sibling = ev->above;
214 wc.stack_mode = ev->detail;
215 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
216 }
217 XSync(dpy, False);
218}
219
220static void
221configurenotify(XEvent *e) {
222 XConfigureEvent *ev = &e->xconfigure;
223
224 if (ev->window == root && (ev->width != sw || ev->height != sh)) {
225 sw = ev->width;
226 sh = ev->height;
227 XFreePixmap(dpy, dc.drawable);
228 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
229 XResizeWindow(dpy, barwin, sw, bh);
230 updatebarpos();
231 lt->arrange();
232 }
233}
234
235static void
236destroynotify(XEvent *e) {
237 Client *c;
238 XDestroyWindowEvent *ev = &e->xdestroywindow;
239
240 if((c = getclient(ev->window)))
241 unmanage(c);
242}
243
244static void
245enternotify(XEvent *e) {
246 Client *c;
247 XCrossingEvent *ev = &e->xcrossing;
248
249 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
250 return;
251 if((c = getclient(ev->window)))
252 focus(c);
253 else if(ev->window == root) {
254 selscreen = True;
255 focus(NULL);
256 }
257}
258
259static void
260expose(XEvent *e) {
261 XExposeEvent *ev = &e->xexpose;
262
263 if(ev->count == 0) {
264 if(barwin == ev->window)
265 drawstatus();
266 }
267}
268
269static void
270keypress(XEvent *e) {
271 static unsigned int len = sizeof key / sizeof key[0];
272 unsigned int i;
273 KeySym keysym;
274 XKeyEvent *ev = &e->xkey;
275
276 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
277 for(i = 0; i < len; i++)
278 if(keysym == key[i].keysym
279 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
280 {
281 if(key[i].func)
282 key[i].func(key[i].arg);
283 }
284}
285
286static void
287leavenotify(XEvent *e) {
288 XCrossingEvent *ev = &e->xcrossing;
289
290 if((ev->window == root) && !ev->same_screen) {
291 selscreen = False;
292 focus(NULL);
293 }
294}
295
296static void
297mappingnotify(XEvent *e) {
298 XMappingEvent *ev = &e->xmapping;
299
300 XRefreshKeyboardMapping(ev);
301 if(ev->request == MappingKeyboard)
302 grabkeys();
303}
304
305static void
306maprequest(XEvent *e) {
307 static XWindowAttributes wa;
308 XMapRequestEvent *ev = &e->xmaprequest;
309
310 if(!XGetWindowAttributes(dpy, ev->window, &wa))
311 return;
312 if(wa.override_redirect)
313 return;
314 if(!getclient(ev->window))
315 manage(ev->window, &wa);
316}
317
318static void
319propertynotify(XEvent *e) {
320 Client *c;
321 Window trans;
322 XPropertyEvent *ev = &e->xproperty;
323
324 if(ev->state == PropertyDelete)
325 return; /* ignore */
326 if((c = getclient(ev->window))) {
327 switch (ev->atom) {
328 default: break;
329 case XA_WM_TRANSIENT_FOR:
330 XGetTransientForHint(dpy, c->win, &trans);
331 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
332 lt->arrange();
333 break;
334 case XA_WM_NORMAL_HINTS:
335 updatesizehints(c);
336 break;
337 }
338 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
339 updatetitle(c);
340 if(c == sel)
341 drawstatus();
342 }
343 }
344}
345
346static void
347unmapnotify(XEvent *e) {
348 Client *c;
349 XUnmapEvent *ev = &e->xunmap;
350
351 if((c = getclient(ev->window)))
352 unmanage(c);
353}
354
355/* extern */
356
357void (*handler[LASTEvent]) (XEvent *) = {
358 [ButtonPress] = buttonpress,
359 [ConfigureRequest] = configurerequest,
360 [ConfigureNotify] = configurenotify,
361 [DestroyNotify] = destroynotify,
362 [EnterNotify] = enternotify,
363 [LeaveNotify] = leavenotify,
364 [Expose] = expose,
365 [KeyPress] = keypress,
366 [MappingNotify] = mappingnotify,
367 [MapRequest] = maprequest,
368 [PropertyNotify] = propertynotify,
369 [UnmapNotify] = unmapnotify
370};
371
372void
373grabkeys(void) {
374 static unsigned int len = sizeof key / sizeof key[0];
375 unsigned int i;
376 KeyCode code;
377
378 XUngrabKey(dpy, AnyKey, AnyModifier, root);
379 for(i = 0; i < len; i++) {
380 code = XKeysymToKeycode(dpy, key[i].keysym);
381 XGrabKey(dpy, code, key[i].mod, root, True,
382 GrabModeAsync, GrabModeAsync);
383 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
384 GrabModeAsync, GrabModeAsync);
385 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
386 GrabModeAsync, GrabModeAsync);
387 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
388 GrabModeAsync, GrabModeAsync);
389 }
390}