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