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#include <X11/Xutil.h>
8
9/* static */
10
11typedef struct {
12 unsigned long mod;
13 KeySym keysym;
14 void (*func)(const char *arg);
15 const char *arg;
16} Key;
17
18KEYS
19
20#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
21#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
22
23static Client *
24getclient(Window w) {
25 Client *c;
26
27 for(c = clients; c && c->win != w; c = c->next);
28 return c;
29}
30
31static void
32movemouse(Client *c) {
33 int x1, y1, ocx, ocy, di, nx, ny;
34 unsigned int dui;
35 Window dummy;
36 XEvent ev;
37
38 ocx = nx = c->x;
39 ocy = ny = c->y;
40 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
41 None, cursor[CurMove], CurrentTime) != GrabSuccess)
42 return;
43 c->ismax = False;
44 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
45 for(;;) {
46 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
47 switch (ev.type) {
48 case ButtonRelease:
49 XUngrabPointer(dpy, CurrentTime);
50 return;
51 case ConfigureRequest:
52 case Expose:
53 case MapRequest:
54 handler[ev.type](&ev);
55 break;
56 case MotionNotify:
57 XSync(dpy, False);
58 nx = ocx + (ev.xmotion.x - x1);
59 ny = ocy + (ev.xmotion.y - y1);
60 if(abs(wax + nx) < SNAP)
61 nx = wax;
62 else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP)
63 nx = wax + waw - c->w - 2 * c->border;
64 if(abs(way - ny) < SNAP)
65 ny = way;
66 else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP)
67 ny = way + wah - c->h - 2 * c->border;
68 resize(c, nx, ny, c->w, c->h, False);
69 break;
70 }
71 }
72}
73
74static void
75resizemouse(Client *c) {
76 int ocx, ocy;
77 int nw, nh;
78 XEvent ev;
79
80 ocx = c->x;
81 ocy = c->y;
82 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
83 None, cursor[CurResize], CurrentTime) != GrabSuccess)
84 return;
85 c->ismax = False;
86 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
87 for(;;) {
88 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
89 switch(ev.type) {
90 case ButtonRelease:
91 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
92 c->w + c->border - 1, c->h + c->border - 1);
93 XUngrabPointer(dpy, CurrentTime);
94 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
95 return;
96 case ConfigureRequest:
97 case Expose:
98 case MapRequest:
99 handler[ev.type](&ev);
100 break;
101 case MotionNotify:
102 XSync(dpy, False);
103 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
104 nw = 1;
105 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
106 nh = 1;
107 resize(c, c->x, c->y, nw, nh, True);
108 break;
109 }
110 }
111}
112
113static void
114buttonpress(XEvent *e) {
115 static char buf[32];
116 unsigned int i, x;
117 Client *c;
118 XButtonPressedEvent *ev = &e->xbutton;
119
120 buf[0] = 0;
121 if(barwin == ev->window) {
122 x = 0;
123 for(i = 0; i < ntags; i++) {
124 x += textw(tags[i]);
125 if(ev->x < x) {
126 snprintf(buf, sizeof buf, "%d", i);
127 if(ev->button == Button1) {
128 if(ev->state & MODKEY)
129 tag(buf);
130 else
131 view(buf);
132 }
133 else if(ev->button == Button3) {
134 if(ev->state & MODKEY)
135 toggletag(buf);
136 else
137 toggleview(buf);
138 }
139 return;
140 }
141 }
142 if((ev->x < x + blw) && ev->button == Button1)
143 setlayout(NULL);
144 }
145 else if((c = getclient(ev->window))) {
146 focus(c);
147 if(CLEANMASK(ev->state) != MODKEY)
148 return;
149 if(ev->button == Button1 && (isfloating() || c->isfloating)) {
150 restack();
151 movemouse(c);
152 }
153 else if(ev->button == Button2)
154 zoom(NULL);
155 else if(ev->button == Button3
156 && (isfloating() || c->isfloating) && !c->isfixed)
157 {
158 restack();
159 resizemouse(c);
160 }
161 }
162}
163
164static void
165configurerequest(XEvent *e) {
166 Client *c;
167 XConfigureRequestEvent *ev = &e->xconfigurerequest;
168 XWindowChanges wc;
169
170 if((c = getclient(ev->window))) {
171 c->ismax = False;
172 if(ev->value_mask & CWBorderWidth)
173 c->border = ev->border_width;
174 if(c->isfixed || c->isfloating || isfloating()) {
175 if(ev->value_mask & CWX)
176 c->x = ev->x;
177 if(ev->value_mask & CWY)
178 c->y = ev->y;
179 if(ev->value_mask & CWWidth)
180 c->w = ev->width;
181 if(ev->value_mask & CWHeight)
182 c->h = ev->height;
183 if((c->x + c->w) > sw && c->isfloating)
184 c->x = sw / 2 - c->w / 2; /* center in x direction */
185 if((c->y + c->h) > sh && c->isfloating)
186 c->y = sh / 2 - c->h / 2; /* center in y direction */
187 if((ev->value_mask & (CWX | CWY))
188 && !(ev->value_mask & (CWWidth | CWHeight)))
189 configure(c);
190 if(isvisible(c))
191 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
192 }
193 else
194 configure(c);
195 }
196 else {
197 wc.x = ev->x;
198 wc.y = ev->y;
199 wc.width = ev->width;
200 wc.height = ev->height;
201 wc.border_width = ev->border_width;
202 wc.sibling = ev->above;
203 wc.stack_mode = ev->detail;
204 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
205 }
206 XSync(dpy, False);
207}
208
209static void
210configurenotify(XEvent *e) {
211 XConfigureEvent *ev = &e->xconfigure;
212
213 if (ev->window == root && (ev->width != sw || ev->height != sh)) {
214 sw = ev->width;
215 sh = ev->height;
216 XFreePixmap(dpy, dc.drawable);
217 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
218 XResizeWindow(dpy, barwin, sw, bh);
219 updatebarpos();
220 arrange();
221 }
222}
223
224static void
225destroynotify(XEvent *e) {
226 Client *c;
227 XDestroyWindowEvent *ev = &e->xdestroywindow;
228
229 if((c = getclient(ev->window)))
230 unmanage(c, WithdrawnState);
231}
232
233static void
234enternotify(XEvent *e) {
235 Client *c;
236 XCrossingEvent *ev = &e->xcrossing;
237
238 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
239 return;
240 if((c = getclient(ev->window)))
241 focus(c);
242 else if(ev->window == root) {
243 selscreen = True;
244 focus(NULL);
245 }
246}
247
248static void
249expose(XEvent *e) {
250 XExposeEvent *ev = &e->xexpose;
251
252 if(ev->count == 0) {
253 if(barwin == ev->window)
254 drawstatus();
255 }
256}
257
258static void
259keypress(XEvent *e) {
260 static unsigned int len = sizeof key / sizeof key[0];
261 unsigned int i;
262 KeySym keysym;
263 XKeyEvent *ev = &e->xkey;
264
265 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
266 for(i = 0; i < len; i++)
267 if(keysym == key[i].keysym
268 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
269 {
270 if(key[i].func)
271 key[i].func(key[i].arg);
272 }
273}
274
275static void
276leavenotify(XEvent *e) {
277 XCrossingEvent *ev = &e->xcrossing;
278
279 if((ev->window == root) && !ev->same_screen) {
280 selscreen = False;
281 focus(NULL);
282 }
283}
284
285static void
286mappingnotify(XEvent *e) {
287 XMappingEvent *ev = &e->xmapping;
288
289 XRefreshKeyboardMapping(ev);
290 if(ev->request == MappingKeyboard)
291 grabkeys();
292}
293
294static void
295maprequest(XEvent *e) {
296 static XWindowAttributes wa;
297 XMapRequestEvent *ev = &e->xmaprequest;
298
299 if(!XGetWindowAttributes(dpy, ev->window, &wa))
300 return;
301 if(wa.override_redirect)
302 return;
303 if(!getclient(ev->window))
304 manage(ev->window, &wa);
305}
306
307static void
308propertynotify(XEvent *e) {
309 Client *c;
310 Window trans;
311 XPropertyEvent *ev = &e->xproperty;
312
313 if(ev->state == PropertyDelete)
314 return; /* ignore */
315 if((c = getclient(ev->window))) {
316 switch (ev->atom) {
317 default: break;
318 case XA_WM_TRANSIENT_FOR:
319 XGetTransientForHint(dpy, c->win, &trans);
320 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
321 arrange();
322 break;
323 case XA_WM_NORMAL_HINTS:
324 updatesizehints(c);
325 break;
326 }
327 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
328 updatetitle(c);
329 if(c == sel)
330 drawstatus();
331 }
332 }
333}
334
335static void
336unmapnotify(XEvent *e) {
337 Client *c;
338 XUnmapEvent *ev = &e->xunmap;
339
340 if((c = getclient(ev->window)) && (ev->event == root)) {
341 if(ev->send_event || c->unmapped-- == 0)
342 unmanage(c, WithdrawnState);
343 }
344}
345
346/* extern */
347
348void (*handler[LASTEvent]) (XEvent *) = {
349 [ButtonPress] = buttonpress,
350 [ConfigureRequest] = configurerequest,
351 [ConfigureNotify] = configurenotify,
352 [DestroyNotify] = destroynotify,
353 [EnterNotify] = enternotify,
354 [LeaveNotify] = leavenotify,
355 [Expose] = expose,
356 [KeyPress] = keypress,
357 [MappingNotify] = mappingnotify,
358 [MapRequest] = maprequest,
359 [PropertyNotify] = propertynotify,
360 [UnmapNotify] = unmapnotify
361};
362
363void
364grabkeys(void) {
365 static unsigned int len = sizeof key / sizeof key[0];
366 unsigned int i;
367 KeyCode code;
368
369 XUngrabKey(dpy, AnyKey, AnyModifier, root);
370 for(i = 0; i < len; i++) {
371 code = XKeysymToKeycode(dpy, key[i].keysym);
372 XGrabKey(dpy, code, key[i].mod, root, True,
373 GrabModeAsync, GrabModeAsync);
374 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
375 GrabModeAsync, GrabModeAsync);
376 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
377 GrabModeAsync, GrabModeAsync);
378 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
379 GrabModeAsync, GrabModeAsync);
380 }
381}