event.c (view raw)
1/* © 2004-2007 Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details. */
3#include "dwm.h"
4#include <stdio.h>
5#include <stdlib.h>
6#include <X11/keysym.h>
7#include <X11/Xatom.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)
143 switch(ev->button) {
144 case Button1:
145 setlayout(NULL);
146 break;
147 }
148 }
149 else if((c = getclient(ev->window))) {
150 focus(c);
151 if(CLEANMASK(ev->state) != MODKEY)
152 return;
153 if(ev->button == Button1 && (lt->arrange == floating || c->isfloating)) {
154 restack();
155 movemouse(c);
156 }
157 else if(ev->button == Button2)
158 zoom(NULL);
159 else if(ev->button == Button3
160 && (lt->arrange == floating || c->isfloating) && !c->isfixed)
161 {
162 restack();
163 resizemouse(c);
164 }
165 }
166}
167
168static void
169configurerequest(XEvent *e) {
170 Client *c;
171 XConfigureRequestEvent *ev = &e->xconfigurerequest;
172 XWindowChanges wc;
173
174 if((c = getclient(ev->window))) {
175 c->ismax = False;
176 if(c->isfixed || c->isfloating || (lt->arrange == floating)) {
177 if(ev->value_mask & CWX)
178 c->x = ev->x;
179 if(ev->value_mask & CWY)
180 c->y = ev->y;
181 if(ev->value_mask & CWWidth)
182 c->w = ev->width;
183 if(ev->value_mask & CWHeight)
184 c->h = ev->height;
185 if((ev->value_mask & (CWX | CWY))
186 && !(ev->value_mask & (CWWidth | CWHeight)))
187 configure(c);
188 if(isvisible(c))
189 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
190 }
191 else {
192 if(ev->value_mask & CWBorderWidth)
193 c->border = ev->border_width;
194 configure(c);
195 c->border = BORDERPX;
196 }
197 }
198 else {
199 wc.x = ev->x;
200 wc.y = ev->y;
201 wc.width = ev->width;
202 wc.height = ev->height;
203 wc.border_width = ev->border_width;
204 wc.sibling = ev->above;
205 wc.stack_mode = ev->detail;
206 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
207 }
208 XSync(dpy, False);
209}
210
211static void
212destroynotify(XEvent *e) {
213 Client *c;
214 XDestroyWindowEvent *ev = &e->xdestroywindow;
215
216 if((c = getclient(ev->window)))
217 unmanage(c);
218}
219
220static void
221enternotify(XEvent *e) {
222 Client *c;
223 XCrossingEvent *ev = &e->xcrossing;
224
225 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
226 return;
227 if((c = getclient(ev->window)) && isvisible(c))
228 focus(c);
229 else if(ev->window == root) {
230 selscreen = True;
231 for(c = stack; c && !isvisible(c); c = c->snext);
232 focus(c);
233 }
234}
235
236static void
237expose(XEvent *e) {
238 XExposeEvent *ev = &e->xexpose;
239
240 if(ev->count == 0) {
241 if(barwin == ev->window)
242 drawstatus();
243 }
244}
245
246static void
247keypress(XEvent *e) {
248 static unsigned int len = sizeof key / sizeof key[0];
249 unsigned int i;
250 KeySym keysym;
251 XKeyEvent *ev = &e->xkey;
252
253 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
254 for(i = 0; i < len; i++)
255 if(keysym == key[i].keysym
256 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
257 {
258 if(key[i].func)
259 key[i].func(key[i].arg);
260 }
261}
262
263static void
264leavenotify(XEvent *e) {
265 XCrossingEvent *ev = &e->xcrossing;
266
267 if((ev->window == root) && !ev->same_screen) {
268 selscreen = False;
269 focus(NULL);
270 }
271}
272
273static void
274mappingnotify(XEvent *e) {
275 XMappingEvent *ev = &e->xmapping;
276
277 XRefreshKeyboardMapping(ev);
278 if(ev->request == MappingKeyboard)
279 grabkeys();
280}
281
282static void
283maprequest(XEvent *e) {
284 static XWindowAttributes wa;
285 XMapRequestEvent *ev = &e->xmaprequest;
286
287 if(!XGetWindowAttributes(dpy, ev->window, &wa))
288 return;
289 if(wa.override_redirect)
290 return;
291 if(!getclient(ev->window))
292 manage(ev->window, &wa);
293}
294
295static void
296propertynotify(XEvent *e) {
297 Client *c;
298 Window trans;
299 XPropertyEvent *ev = &e->xproperty;
300
301 if(ev->state == PropertyDelete)
302 return; /* ignore */
303 if((c = getclient(ev->window))) {
304 switch (ev->atom) {
305 default: break;
306 case XA_WM_TRANSIENT_FOR:
307 XGetTransientForHint(dpy, c->win, &trans);
308 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
309 lt->arrange();
310 break;
311 case XA_WM_NORMAL_HINTS:
312 updatesizehints(c);
313 break;
314 }
315 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
316 updatetitle(c);
317 if(c == sel)
318 drawstatus();
319 }
320 }
321}
322
323static void
324unmapnotify(XEvent *e) {
325 Client *c;
326 XUnmapEvent *ev = &e->xunmap;
327
328 if((c = getclient(ev->window)))
329 unmanage(c);
330}
331
332/* extern */
333
334void (*handler[LASTEvent]) (XEvent *) = {
335 [ButtonPress] = buttonpress,
336 [ConfigureRequest] = configurerequest,
337 [DestroyNotify] = destroynotify,
338 [EnterNotify] = enternotify,
339 [LeaveNotify] = leavenotify,
340 [Expose] = expose,
341 [KeyPress] = keypress,
342 [MappingNotify] = mappingnotify,
343 [MapRequest] = maprequest,
344 [PropertyNotify] = propertynotify,
345 [UnmapNotify] = unmapnotify
346};
347
348void
349grabkeys(void) {
350 static unsigned int len = sizeof key / sizeof key[0];
351 unsigned int i;
352 KeyCode code;
353
354 XUngrabKey(dpy, AnyKey, AnyModifier, root);
355 for(i = 0; i < len; i++) {
356 code = XKeysymToKeycode(dpy, key[i].keysym);
357 XGrabKey(dpy, code, key[i].mod, root, True,
358 GrabModeAsync, GrabModeAsync);
359 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
360 GrabModeAsync, GrabModeAsync);
361 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
362 GrabModeAsync, GrabModeAsync);
363 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
364 GrabModeAsync, GrabModeAsync);
365 }
366}