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