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