event.c (view raw)
1/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
3 */
4#include "dwm.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)(Arg *arg);
15 Arg arg;
16} Key;
17
18KEYS
19
20#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
21#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
22
23static void
24movemouse(Client *c) {
25 int x1, y1, ocx, ocy, di;
26 unsigned int dui;
27 Window dummy;
28 XEvent ev;
29
30 ocx = c->x;
31 ocy = c->y;
32 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
33 None, cursor[CurMove], CurrentTime) != GrabSuccess)
34 return;
35 c->ismax = False;
36 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
37 for(;;) {
38 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
39 switch (ev.type) {
40 case ButtonRelease:
41 resize(c, True);
42 XUngrabPointer(dpy, CurrentTime);
43 return;
44 case ConfigureRequest:
45 case Expose:
46 case MapRequest:
47 handler[ev.type](&ev);
48 break;
49 case MotionNotify:
50 XSync(dpy, False);
51 c->x = ocx + (ev.xmotion.x - x1);
52 c->y = ocy + (ev.xmotion.y - y1);
53 if(abs(wax + c->x) < SNAP)
54 c->x = wax;
55 else if(abs((wax + waw) - (c->x + c->w + 2 * c->border)) < SNAP)
56 c->x = wax + waw - c->w - 2 * c->border;
57 if(abs(way - c->y) < SNAP)
58 c->y = way;
59 else if(abs((way + wah) - (c->y + c->h + 2 * c->border)) < SNAP)
60 c->y = way + wah - c->h - 2 * c->border;
61 resize(c, False);
62 break;
63 }
64 }
65}
66
67static void
68resizemouse(Client *c) {
69 int ocx, ocy;
70 int nw, nh;
71 XEvent ev;
72
73 ocx = c->x;
74 ocy = c->y;
75 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
76 None, cursor[CurResize], CurrentTime) != GrabSuccess)
77 return;
78 c->ismax = False;
79 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
80 for(;;) {
81 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
82 switch(ev.type) {
83 case ButtonRelease:
84 resize(c, True);
85 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
86 c->w + c->border - 1, c->h + c->border - 1);
87 XUngrabPointer(dpy, CurrentTime);
88 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
89 return;
90 case ConfigureRequest:
91 case Expose:
92 case MapRequest:
93 handler[ev.type](&ev);
94 break;
95 case MotionNotify:
96 XSync(dpy, False);
97 nw = ev.xmotion.x - ocx - 2 * c->border + 1;
98 c->w = nw > 0 ? nw : 1;
99 nh = ev.xmotion.y - ocy - 2 * c->border + 1;
100 c->h = nh > 0 ? nh : 1;
101 resize(c, True);
102 break;
103 }
104 }
105}
106
107static void
108buttonpress(XEvent *e) {
109 int x;
110 Arg a;
111 Client *c;
112 XButtonPressedEvent *ev = &e->xbutton;
113
114 if(barwin == ev->window) {
115 x = 0;
116 for(a.i = 0; a.i < ntags; a.i++) {
117 x += textw(tags[a.i]);
118 if(ev->x < x) {
119 if(ev->button == Button1) {
120 if(ev->state & MODKEY)
121 tag(&a);
122 else
123 view(&a);
124 }
125 else if(ev->button == Button3) {
126 if(ev->state & MODKEY)
127 toggletag(&a);
128 else
129 toggleview(&a);
130 }
131 return;
132 }
133 }
134 if(ev->x < x + bmw)
135 switch(ev->button) {
136 case Button1:
137 togglemode(NULL);
138 break;
139 case Button4:
140 a.i = 1;
141 incnmaster(&a);
142 break;
143 case Button5:
144 a.i = -1;
145 incnmaster(&a);
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 && (arrange == dofloat || c->isfloat)) {
154 restack();
155 movemouse(c);
156 }
157 else if(ev->button == Button2)
158 zoom(NULL);
159 else if(ev->button == Button3 && (arrange == dofloat || c->isfloat)
160 && !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 c->border = (ev->value_mask & CWBorderWidth) ? ev->border_width : c->border;
177 if(c->isfixed || c->isfloat || (arrange == dofloat)) {
178 c->x = (ev->value_mask & CWX) ? ev->x : c->x;
179 c->y = (ev->value_mask & CWY) ? ev->y : c->y;
180 c->w = (ev->value_mask & CWWidth) ? ev->width : c->w;
181 c->h = (ev->value_mask & CWHeight) ? ev->height : c->h;
182 if((ev->value_mask & (CWX | CWY)) && !(ev->value_mask & (CWWidth | CWHeight)))
183 configure(c);
184 resize(c, False);
185 if(!isvisible(c))
186 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
187 }
188 else
189 configure(c);
190 }
191 else {
192 wc.x = ev->x;
193 wc.y = ev->y;
194 wc.width = ev->width;
195 wc.height = ev->height;
196 wc.border_width = ev->border_width;
197 wc.sibling = ev->above;
198 wc.stack_mode = ev->detail;
199 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
200 }
201 XSync(dpy, False);
202}
203
204static void
205destroynotify(XEvent *e) {
206 Client *c;
207 XDestroyWindowEvent *ev = &e->xdestroywindow;
208
209 if((c = getclient(ev->window)))
210 unmanage(c);
211}
212
213static void
214enternotify(XEvent *e) {
215 Client *c;
216 XCrossingEvent *ev = &e->xcrossing;
217
218 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
219 return;
220 if((c = getclient(ev->window)) && isvisible(c))
221 focus(c);
222 else if(ev->window == root) {
223 selscreen = True;
224 for(c = stack; c && !isvisible(c); c = c->snext);
225 focus(c);
226 }
227}
228
229static void
230expose(XEvent *e) {
231 XExposeEvent *ev = &e->xexpose;
232
233 if(ev->count == 0) {
234 if(barwin == ev->window)
235 drawstatus();
236 }
237}
238
239static void
240keypress(XEvent *e) {
241 static unsigned int len = sizeof key / sizeof key[0];
242 unsigned int i;
243 KeySym keysym;
244 XKeyEvent *ev = &e->xkey;
245
246 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
247 for(i = 0; i < len; i++) {
248 if(keysym == key[i].keysym
249 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
250 {
251 if(key[i].func)
252 key[i].func(&key[i].arg);
253 }
254 }
255}
256
257static void
258leavenotify(XEvent *e) {
259 XCrossingEvent *ev = &e->xcrossing;
260
261 if((ev->window == root) && !ev->same_screen) {
262 selscreen = False;
263 focus(NULL);
264 }
265}
266
267static void
268mappingnotify(XEvent *e) {
269 XMappingEvent *ev = &e->xmapping;
270
271 XRefreshKeyboardMapping(ev);
272 if(ev->request == MappingKeyboard)
273 grabkeys();
274}
275
276static void
277maprequest(XEvent *e) {
278 static XWindowAttributes wa;
279 XMapRequestEvent *ev = &e->xmaprequest;
280
281 if(!XGetWindowAttributes(dpy, ev->window, &wa))
282 return;
283 if(wa.override_redirect)
284 return;
285 if(!getclient(ev->window))
286 manage(ev->window, &wa);
287}
288
289static void
290propertynotify(XEvent *e) {
291 Client *c;
292 Window trans;
293 XPropertyEvent *ev = &e->xproperty;
294
295 if(ev->state == PropertyDelete)
296 return; /* ignore */
297 if((c = getclient(ev->window))) {
298 switch (ev->atom) {
299 default: break;
300 case XA_WM_TRANSIENT_FOR:
301 XGetTransientForHint(dpy, c->win, &trans);
302 if(!c->isfloat && (c->isfloat = (trans != 0)))
303 arrange();
304 break;
305 case XA_WM_NORMAL_HINTS:
306 updatesizehints(c);
307 break;
308 }
309 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
310 updatetitle(c);
311 if(c == sel)
312 drawstatus();
313 }
314 }
315}
316
317static void
318unmapnotify(XEvent *e) {
319 Client *c;
320 XUnmapEvent *ev = &e->xunmap;
321
322 if((c = getclient(ev->window)))
323 unmanage(c);
324}
325
326/* extern */
327
328void (*handler[LASTEvent]) (XEvent *) = {
329 [ButtonPress] = buttonpress,
330 [ConfigureRequest] = configurerequest,
331 [DestroyNotify] = destroynotify,
332 [EnterNotify] = enternotify,
333 [LeaveNotify] = leavenotify,
334 [Expose] = expose,
335 [KeyPress] = keypress,
336 [MappingNotify] = mappingnotify,
337 [MapRequest] = maprequest,
338 [PropertyNotify] = propertynotify,
339 [UnmapNotify] = unmapnotify
340};
341
342void
343grabkeys(void) {
344 static unsigned int len = sizeof key / sizeof key[0];
345 unsigned int i;
346 KeyCode code;
347
348 XUngrabKey(dpy, AnyKey, AnyModifier, root);
349 for(i = 0; i < len; i++) {
350 code = XKeysymToKeycode(dpy, key[i].keysym);
351 XGrabKey(dpy, code, key[i].mod, root, True,
352 GrabModeAsync, GrabModeAsync);
353 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
354 GrabModeAsync, GrabModeAsync);
355 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
356 GrabModeAsync, GrabModeAsync);
357 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
358 GrabModeAsync, GrabModeAsync);
359 }
360}
361
362void
363procevent(void) {
364 XEvent ev;
365
366 while(XPending(dpy)) {
367 XNextEvent(dpy, &ev);
368 if(handler[ev.type])
369 (handler[ev.type])(&ev); /* call handler */
370 }
371}