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