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 XEvent synev;
154 XWindowChanges wc;
155
156 if((c = getclient(ev->window))) {
157 c->ismax = False;
158 gravitate(c, True);
159 if(ev->value_mask & CWX)
160 c->x = ev->x;
161 if(ev->value_mask & CWY)
162 c->y = ev->y;
163 if(ev->value_mask & CWWidth)
164 c->w = ev->width;
165 if(ev->value_mask & CWHeight)
166 c->h = ev->height;
167 if(ev->value_mask & CWBorderWidth)
168 c->border = ev->border_width;
169 gravitate(c, False);
170 wc.x = c->x;
171 wc.y = c->y;
172 wc.width = c->w;
173 wc.height = c->h;
174 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
175 if(newmask)
176 XConfigureWindow(dpy, c->win, newmask, &wc);
177 else
178 configure(c);
179 XSync(dpy, False);
180 if(c->isfloat)
181 resize(c, False, TopLeft);
182 else
183 arrange(NULL);
184 }
185 else {
186 wc.x = ev->x;
187 wc.y = ev->y;
188 wc.width = ev->width;
189 wc.height = ev->height;
190 wc.border_width = ev->border_width;
191 wc.sibling = ev->above;
192 wc.stack_mode = ev->detail;
193 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
194 XSync(dpy, False);
195 }
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
215 if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
216 focus(c);
217 else if(ev->window == root) {
218 issel = True;
219 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
220 drawall();
221 }
222}
223
224static void
225expose(XEvent *e) {
226 Client *c;
227 XExposeEvent *ev = &e->xexpose;
228
229 if(ev->count == 0) {
230 if(barwin == ev->window)
231 drawstatus();
232 else if((c = getctitle(ev->window)))
233 drawtitle(c);
234 }
235}
236
237static void
238keypress(XEvent *e) {
239 static unsigned int len = sizeof(key) / sizeof(key[0]);
240 unsigned int i;
241 KeySym keysym;
242 XKeyEvent *ev = &e->xkey;
243
244 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
245 for(i = 0; i < len; i++) {
246 if(keysym == key[i].keysym
247 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
248 {
249 if(key[i].func)
250 key[i].func(&key[i].arg);
251 return;
252 }
253 }
254}
255
256static void
257leavenotify(XEvent *e) {
258 XCrossingEvent *ev = &e->xcrossing;
259
260 if((ev->window == root) && !ev->same_screen) {
261 issel = False;
262 drawall();
263 }
264}
265
266static void
267mappingnotify(XEvent *e) {
268 XMappingEvent *ev = &e->xmapping;
269
270 XRefreshKeyboardMapping(ev);
271 if(ev->request == MappingKeyboard)
272 grabkeys();
273}
274
275static void
276maprequest(XEvent *e) {
277 static XWindowAttributes wa;
278 XMapRequestEvent *ev = &e->xmaprequest;
279
280 if(!XGetWindowAttributes(dpy, ev->window, &wa))
281 return;
282
283 if(wa.override_redirect) {
284 XSelectInput(dpy, ev->window,
285 (StructureNotifyMask | PropertyChangeMask));
286 return;
287 }
288
289 if(!getclient(ev->window))
290 manage(ev->window, &wa);
291}
292
293static void
294propertynotify(XEvent *e) {
295 Client *c;
296 Window trans;
297 XPropertyEvent *ev = &e->xproperty;
298
299 if(ev->state == PropertyDelete)
300 return; /* ignore */
301
302 if((c = getclient(ev->window))) {
303 if(ev->atom == wmatom[WMProtocols]) {
304 c->proto = getproto(c->win);
305 return;
306 }
307 switch (ev->atom) {
308 default: break;
309 case XA_WM_TRANSIENT_FOR:
310 XGetTransientForHint(dpy, c->win, &trans);
311 if(!c->isfloat && (c->isfloat = (trans != 0)))
312 arrange(NULL);
313 break;
314 case XA_WM_NORMAL_HINTS:
315 updatesize(c);
316 break;
317 }
318 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
319 updatetitle(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}