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{
26 int x1, y1, ocx, ocy, di;
27 unsigned int dui;
28 Window dummy;
29 XEvent ev;
30
31 ocx = c->x;
32 ocy = c->y;
33 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
34 None, cursor[CurMove], CurrentTime) != GrabSuccess)
35 return;
36 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
37 for(;;) {
38 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
39 switch (ev.type) {
40 default: break;
41 case Expose:
42 handler[Expose](&ev);
43 break;
44 case MotionNotify:
45 XSync(dpy, False);
46 c->x = ocx + (ev.xmotion.x - x1);
47 c->y = ocy + (ev.xmotion.y - y1);
48 resize(c, False, TopLeft);
49 break;
50 case ButtonRelease:
51 XUngrabPointer(dpy, CurrentTime);
52 return;
53 }
54 }
55}
56
57static void
58resizemouse(Client *c)
59{
60 int ocx, ocy;
61 int nw, nh;
62 Corner sticky;
63 XEvent ev;
64
65 ocx = c->x;
66 ocy = c->y;
67 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
68 None, cursor[CurResize], CurrentTime) != GrabSuccess)
69 return;
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 default: break;
75 case Expose:
76 handler[Expose](&ev);
77 break;
78 case MotionNotify:
79 XSync(dpy, False);
80 if((nw = abs(ocx - ev.xmotion.x)))
81 c->w = abs(ocx - ev.xmotion.x);
82 if((nh = abs(ocy - ev.xmotion.y)))
83 c->h = abs(ocy - ev.xmotion.y);
84 c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
85 c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
86 if(ocx <= ev.xmotion.x)
87 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
88 else
89 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
90 resize(c, True, sticky);
91 break;
92 case ButtonRelease:
93 XUngrabPointer(dpy, CurrentTime);
94 return;
95 }
96 }
97}
98
99static void
100buttonpress(XEvent *e)
101{
102 int x;
103 Arg a;
104 Client *c;
105 XButtonPressedEvent *ev = &e->xbutton;
106
107 if(barwin == ev->window) {
108 x = 0;
109 for(a.i = 0; a.i < ntags; a.i++) {
110 x += textw(tags[a.i]);
111 if(ev->x < x) {
112 if(ev->button == Button1)
113 view(&a);
114 else if(ev->button == Button3)
115 toggleview(&a);
116 return;
117 }
118 }
119 if(ev->x < x + bmw) {
120 if(ev->button == Button1)
121 togglemode(NULL);
122 }
123 }
124 else if((c = getclient(ev->window))) {
125 focus(c);
126 if(CLEANMASK(ev->state) != MODKEY)
127 return;
128 switch(ev->button) {
129 default:
130 break;
131 case Button1:
132 if(!c->ismax && (arrange == dofloat || c->isfloat)) {
133 restack(c);
134 movemouse(c);
135 }
136 break;
137 case Button2:
138 zoom(NULL);
139 break;
140 case Button3:
141 if(!c->ismax && (arrange == dofloat || c->isfloat)) {
142 restack(c);
143 resizemouse(c);
144 }
145 break;
146 }
147 }
148}
149
150static void
151synconfig(Client *c, int x, int y, int w, int h, unsigned int border)
152{
153 XEvent synev;
154
155 synev.type = ConfigureNotify;
156 synev.xconfigure.display = dpy;
157 synev.xconfigure.event = c->win;
158 synev.xconfigure.window = c->win;
159 synev.xconfigure.x = x;
160 synev.xconfigure.y = y;
161 synev.xconfigure.width = w;
162 synev.xconfigure.height = h;
163 synev.xconfigure.border_width = border;
164 synev.xconfigure.above = None;
165 XSendEvent(dpy, c->win, True, NoEventMask, &synev);
166}
167
168static void
169configurerequest(XEvent *e)
170{
171 unsigned long newmask;
172 Client *c;
173 XConfigureRequestEvent *ev = &e->xconfigurerequest;
174 XWindowChanges wc;
175
176 if((c = getclient(ev->window))) {
177 if(!c->isfloat && (arrange != dofloat) && c->ismax) {
178 synconfig(c, sx, sy + bh, sw - 2, sh - 2 - bh, ev->border_width);
179 XSync(dpy, False);
180 return;
181 }
182 gravitate(c, True);
183 if(ev->value_mask & CWX)
184 c->x = ev->x;
185 if(ev->value_mask & CWY)
186 c->y = ev->y;
187 if(ev->value_mask & CWWidth)
188 c->w = ev->width;
189 if(ev->value_mask & CWHeight)
190 c->h = ev->height;
191 if(ev->value_mask & CWBorderWidth)
192 c->border = ev->border_width;
193 gravitate(c, False);
194 wc.x = c->x;
195 wc.y = c->y;
196 wc.width = c->w;
197 wc.height = c->h;
198 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
199 if(newmask)
200 XConfigureWindow(dpy, c->win, newmask, &wc);
201 else
202 synconfig(c, c->x, c->y, c->w, c->h, c->border);
203 XSync(dpy, False);
204 if(c->isfloat)
205 resize(c, False, TopLeft);
206 else
207 arrange(NULL);
208 }
209 else {
210 wc.x = ev->x;
211 wc.y = ev->y;
212 wc.width = ev->width;
213 wc.height = ev->height;
214 wc.border_width = ev->border_width;
215 wc.sibling = ev->above;
216 wc.stack_mode = ev->detail;
217 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
218 XSync(dpy, False);
219 }
220}
221
222static void
223destroynotify(XEvent *e)
224{
225 Client *c;
226 XDestroyWindowEvent *ev = &e->xdestroywindow;
227
228 if((c = getclient(ev->window)))
229 unmanage(c);
230}
231
232static void
233enternotify(XEvent *e)
234{
235 Client *c;
236 XCrossingEvent *ev = &e->xcrossing;
237
238 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
239 return;
240
241 if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
242 focus(c);
243 else if(ev->window == root) {
244 issel = True;
245 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
246 drawall();
247 }
248}
249
250static void
251expose(XEvent *e)
252{
253 Client *c;
254 XExposeEvent *ev = &e->xexpose;
255
256 if(ev->count == 0) {
257 if(barwin == ev->window)
258 drawstatus();
259 else if((c = getctitle(ev->window)))
260 drawtitle(c);
261 }
262}
263
264static void
265keypress(XEvent *e)
266{
267 static unsigned int len = sizeof(key) / sizeof(key[0]);
268 unsigned int i;
269 KeySym keysym;
270 XKeyEvent *ev = &e->xkey;
271
272 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
273 for(i = 0; i < len; i++) {
274 if(keysym == key[i].keysym &&
275 CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
276 {
277 if(key[i].func)
278 key[i].func(&key[i].arg);
279 return;
280 }
281 }
282}
283
284static void
285leavenotify(XEvent *e)
286{
287 XCrossingEvent *ev = &e->xcrossing;
288
289 if((ev->window == root) && !ev->same_screen) {
290 issel = False;
291 drawall();
292 }
293}
294
295static void
296mappingnotify(XEvent *e)
297{
298 XMappingEvent *ev = &e->xmapping;
299
300 XRefreshKeyboardMapping(ev);
301 if(ev->request == MappingKeyboard)
302 grabkeys();
303}
304
305static void
306maprequest(XEvent *e)
307{
308 static XWindowAttributes wa;
309 XMapRequestEvent *ev = &e->xmaprequest;
310
311 if(!XGetWindowAttributes(dpy, ev->window, &wa))
312 return;
313
314 if(wa.override_redirect) {
315 XSelectInput(dpy, ev->window,
316 (StructureNotifyMask | PropertyChangeMask));
317 return;
318 }
319
320 if(!getclient(ev->window))
321 manage(ev->window, &wa);
322}
323
324static void
325propertynotify(XEvent *e)
326{
327 Client *c;
328 Window trans;
329 XPropertyEvent *ev = &e->xproperty;
330
331 if(ev->state == PropertyDelete)
332 return; /* ignore */
333
334 if((c = getclient(ev->window))) {
335 if(ev->atom == wmatom[WMProtocols]) {
336 c->proto = getproto(c->win);
337 return;
338 }
339 switch (ev->atom) {
340 default: break;
341 case XA_WM_TRANSIENT_FOR:
342 XGetTransientForHint(dpy, c->win, &trans);
343 if(!c->isfloat && (c->isfloat = (trans != 0)))
344 arrange(NULL);
345 break;
346 case XA_WM_NORMAL_HINTS:
347 setsize(c);
348 break;
349 }
350 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
351 settitle(c);
352 drawtitle(c);
353 }
354 }
355}
356
357static void
358unmapnotify(XEvent *e)
359{
360 Client *c;
361 XUnmapEvent *ev = &e->xunmap;
362
363 if((c = getclient(ev->window)))
364 unmanage(c);
365}
366
367/* extern */
368
369void (*handler[LASTEvent]) (XEvent *) = {
370 [ButtonPress] = buttonpress,
371 [ConfigureRequest] = configurerequest,
372 [DestroyNotify] = destroynotify,
373 [EnterNotify] = enternotify,
374 [LeaveNotify] = leavenotify,
375 [Expose] = expose,
376 [KeyPress] = keypress,
377 [MappingNotify] = mappingnotify,
378 [MapRequest] = maprequest,
379 [PropertyNotify] = propertynotify,
380 [UnmapNotify] = unmapnotify
381};
382
383void
384grabkeys()
385{
386 static unsigned int len = sizeof(key) / sizeof(key[0]);
387 unsigned int i;
388 KeyCode code;
389
390 XUngrabKey(dpy, AnyKey, AnyModifier, root);
391 for(i = 0; i < len; i++) {
392 code = XKeysymToKeycode(dpy, key[i].keysym);
393 XGrabKey(dpy, code, key[i].mod, root, True,
394 GrabModeAsync, GrabModeAsync);
395 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
396 GrabModeAsync, GrabModeAsync);
397 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
398 GrabModeAsync, GrabModeAsync);
399 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
400 GrabModeAsync, GrabModeAsync);
401 }
402}
403
404void
405procevent()
406{
407 XEvent ev;
408
409 while(XPending(dpy)) {
410 XNextEvent(dpy, &ev);
411 if(handler[ev.type])
412 (handler[ev.type])(&ev); /* call handler */
413 }
414}
415