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