event.c (view raw)
1/* © 2006-2007 Anselm R. Garbe <garbeam at gmail dot com>
2 * © 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
3 * See LICENSE file for license details. */
4#include "dwm.h"
5#include <stdio.h>
6#include <stdlib.h>
7#include <X11/keysym.h>
8#include <X11/Xatom.h>
9
10/* static */
11
12typedef struct {
13 unsigned long mod;
14 KeySym keysym;
15 void (*func)(const char *arg);
16 const char *arg;
17} Key;
18
19KEYS
20
21#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
22#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
23
24static Client *
25getclient(Window w) {
26 Client *c;
27
28 for(c = clients; c && c->win != w; c = c->next);
29 return c;
30}
31
32static void
33movemouse(Client *c) {
34 int x1, y1, ocx, ocy, di, nx, ny;
35 unsigned int dui;
36 Window dummy;
37 XEvent ev;
38
39 ocx = nx = c->x;
40 ocy = ny = c->y;
41 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
42 None, cursor[CurMove], CurrentTime) != GrabSuccess)
43 return;
44 c->ismax = False;
45 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
46 for(;;) {
47 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
48 switch (ev.type) {
49 case ButtonRelease:
50 XUngrabPointer(dpy, CurrentTime);
51 return;
52 case ConfigureRequest:
53 case Expose:
54 case MapRequest:
55 handler[ev.type](&ev);
56 break;
57 case MotionNotify:
58 XSync(dpy, False);
59 nx = ocx + (ev.xmotion.x - x1);
60 ny = ocy + (ev.xmotion.y - y1);
61 if(abs(wax + nx) < SNAP)
62 nx = wax;
63 else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP)
64 nx = wax + waw - c->w - 2 * c->border;
65 if(abs(way - ny) < SNAP)
66 ny = way;
67 else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP)
68 ny = way + wah - c->h - 2 * c->border;
69 resize(c, nx, ny, c->w, c->h, False);
70 break;
71 }
72 }
73}
74
75static void
76resizemouse(Client *c) {
77 int ocx, ocy;
78 int nw, nh;
79 XEvent ev;
80
81 ocx = c->x;
82 ocy = c->y;
83 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
84 None, cursor[CurResize], CurrentTime) != GrabSuccess)
85 return;
86 c->ismax = False;
87 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
88 for(;;) {
89 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
90 switch(ev.type) {
91 case ButtonRelease:
92 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
93 c->w + c->border - 1, c->h + c->border - 1);
94 XUngrabPointer(dpy, CurrentTime);
95 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
96 return;
97 case ConfigureRequest:
98 case Expose:
99 case MapRequest:
100 handler[ev.type](&ev);
101 break;
102 case MotionNotify:
103 XSync(dpy, False);
104 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
105 nw = 1;
106 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
107 nh = 1;
108 resize(c, c->x, c->y, nw, nh, True);
109 break;
110 }
111 }
112}
113
114static void
115buttonpress(XEvent *e) {
116 static char buf[32];
117 unsigned int i, x;
118 Client *c;
119 XButtonPressedEvent *ev = &e->xbutton;
120
121 buf[0] = 0;
122 if(barwin == ev->window) {
123 x = 0;
124 for(i = 0; i < ntags; i++) {
125 x += textw(tags[i]);
126 if(ev->x < x) {
127 snprintf(buf, sizeof buf, "%d", i);
128 if(ev->button == Button1) {
129 if(ev->state & MODKEY)
130 tag(buf);
131 else
132 view(buf);
133 }
134 else if(ev->button == Button3) {
135 if(ev->state & MODKEY)
136 toggletag(buf);
137 else
138 toggleview(buf);
139 }
140 return;
141 }
142 }
143 if(ev->x < x + blw)
144 switch(ev->button) {
145 case Button1:
146 setlayout(NULL);
147 break;
148 }
149 }
150 else if((c = getclient(ev->window))) {
151 focus(c);
152 if(CLEANMASK(ev->state) != MODKEY)
153 return;
154 if(ev->button == Button1 && (lt->arrange == floating || c->isfloating)) {
155 restack();
156 movemouse(c);
157 }
158 else if(ev->button == Button2)
159 zoom(NULL);
160 else if(ev->button == Button3
161 && (lt->arrange == floating || c->isfloating) && !c->isfixed)
162 {
163 restack();
164 resizemouse(c);
165 }
166 }
167}
168
169static void
170configurerequest(XEvent *e) {
171 Client *c;
172 XConfigureRequestEvent *ev = &e->xconfigurerequest;
173 XWindowChanges wc;
174
175 if((c = getclient(ev->window))) {
176 c->ismax = False;
177 if(ev->value_mask & CWBorderWidth)
178 c->border = ev->border_width;
179 if(c->isfixed || c->isfloating || (lt->arrange == floating)) {
180 if(ev->value_mask & CWX)
181 c->x = ev->x;
182 if(ev->value_mask & CWY)
183 c->y = ev->y;
184 if(ev->value_mask & CWWidth)
185 c->w = ev->width;
186 if(ev->value_mask & CWHeight)
187 c->h = ev->height;
188 if((c->x + c->w) > sw && c->isfloating)
189 c->x = sw / 2 - c->w / 2; /* center in x direction */
190 if((c->y + c->h) > sh && c->isfloating)
191 c->y = sh / 2 - c->h / 2; /* center in y direction */
192 if((ev->value_mask & (CWX | CWY))
193 && !(ev->value_mask & (CWWidth | CWHeight)))
194 configure(c);
195 if(isvisible(c))
196 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
197 }
198 else
199 configure(c);
200 }
201 else {
202 wc.x = ev->x;
203 wc.y = ev->y;
204 wc.width = ev->width;
205 wc.height = ev->height;
206 wc.border_width = ev->border_width;
207 wc.sibling = ev->above;
208 wc.stack_mode = ev->detail;
209 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
210 }
211 XSync(dpy, False);
212}
213
214static void
215configurenotify(XEvent *e) {
216 XConfigureEvent *ev = &e->xconfigure;
217
218 if (ev->window == root && (ev->width != sw || ev->height != sh)) {
219 sw = ev->width;
220 sh = ev->height;
221 wah = sh - bh;
222 waw = sw;
223 XFreePixmap(dpy, dc.drawable);
224 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
225 XResizeWindow(dpy, barwin, sw, bh);
226 lt->arrange();
227 }
228}
229
230static void
231destroynotify(XEvent *e) {
232 Client *c;
233 XDestroyWindowEvent *ev = &e->xdestroywindow;
234
235 if((c = getclient(ev->window)))
236 unmanage(c);
237}
238
239static void
240enternotify(XEvent *e) {
241 Client *c;
242 XCrossingEvent *ev = &e->xcrossing;
243
244 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
245 return;
246 if((c = getclient(ev->window)) && isvisible(c))
247 focus(c);
248 else if(ev->window == root) {
249 selscreen = True;
250 for(c = stack; c && !isvisible(c); c = c->snext);
251 focus(c);
252 }
253}
254
255static void
256expose(XEvent *e) {
257 XExposeEvent *ev = &e->xexpose;
258
259 if(ev->count == 0) {
260 if(barwin == ev->window)
261 drawstatus();
262 }
263}
264
265static void
266keypress(XEvent *e) {
267 static unsigned int len = sizeof key / sizeof key[0];
268 unsigned int i;
269 KeySym keysym;
270 XKeyEvent *ev = &e->xkey;
271
272 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
273 for(i = 0; i < len; i++)
274 if(keysym == key[i].keysym
275 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
276 {
277 if(key[i].func)
278 key[i].func(key[i].arg);
279 }
280}
281
282static void
283leavenotify(XEvent *e) {
284 XCrossingEvent *ev = &e->xcrossing;
285
286 if((ev->window == root) && !ev->same_screen) {
287 selscreen = False;
288 focus(NULL);
289 }
290}
291
292static void
293mappingnotify(XEvent *e) {
294 XMappingEvent *ev = &e->xmapping;
295
296 XRefreshKeyboardMapping(ev);
297 if(ev->request == MappingKeyboard)
298 grabkeys();
299}
300
301static void
302maprequest(XEvent *e) {
303 static XWindowAttributes wa;
304 XMapRequestEvent *ev = &e->xmaprequest;
305
306 if(!XGetWindowAttributes(dpy, ev->window, &wa))
307 return;
308 if(wa.override_redirect)
309 return;
310 if(!getclient(ev->window))
311 manage(ev->window, &wa);
312}
313
314static void
315propertynotify(XEvent *e) {
316 Client *c;
317 Window trans;
318 XPropertyEvent *ev = &e->xproperty;
319
320 if(ev->state == PropertyDelete)
321 return; /* ignore */
322 if((c = getclient(ev->window))) {
323 switch (ev->atom) {
324 default: break;
325 case XA_WM_TRANSIENT_FOR:
326 XGetTransientForHint(dpy, c->win, &trans);
327 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
328 lt->arrange();
329 break;
330 case XA_WM_NORMAL_HINTS:
331 updatesizehints(c);
332 break;
333 }
334 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
335 updatetitle(c);
336 if(c == sel)
337 drawstatus();
338 }
339 }
340}
341
342static void
343unmapnotify(XEvent *e) {
344 Client *c;
345 XUnmapEvent *ev = &e->xunmap;
346
347 if((c = getclient(ev->window)))
348 unmanage(c);
349}
350
351/* extern */
352
353void (*handler[LASTEvent]) (XEvent *) = {
354 [ButtonPress] = buttonpress,
355 [ConfigureRequest] = configurerequest,
356 [ConfigureNotify] = configurenotify,
357 [DestroyNotify] = destroynotify,
358 [EnterNotify] = enternotify,
359 [LeaveNotify] = leavenotify,
360 [Expose] = expose,
361 [KeyPress] = keypress,
362 [MappingNotify] = mappingnotify,
363 [MapRequest] = maprequest,
364 [PropertyNotify] = propertynotify,
365 [UnmapNotify] = unmapnotify
366};
367
368void
369grabkeys(void) {
370 static unsigned int len = sizeof key / sizeof key[0];
371 unsigned int i;
372 KeyCode code;
373
374 XUngrabKey(dpy, AnyKey, AnyModifier, root);
375 for(i = 0; i < len; i++) {
376 code = XKeysymToKeycode(dpy, key[i].keysym);
377 XGrabKey(dpy, code, key[i].mod, root, True,
378 GrabModeAsync, GrabModeAsync);
379 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
380 GrabModeAsync, GrabModeAsync);
381 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
382 GrabModeAsync, GrabModeAsync);
383 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
384 GrabModeAsync, GrabModeAsync);
385 }
386}