event.c

   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
  12 typedef struct {
  13         unsigned long mod;
  14         KeySym keysym;
  15         void (*func)(Arg *arg);
  16         Arg arg;
  17 } Key;
  18
  19 KEYS
  20
  21 #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
  22
  23 static void
  24 movemouse(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
  57 static void
  58 resizemouse(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
  99 static void
 100 buttonpress(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         }
 120         else if((c = getclient(ev->window))) {
 121                 focus(c);
 122                 if(CLEANMASK(ev->state) == 0)
 123                         return;
 124                 switch(ev->button) {
 125                 default:
 126                         break;
 127                 case Button1:
 128                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 129                                 restack(c);
 130                                 movemouse(c);
 131                         }
 132                         break;
 133                 case Button2:
 134                         zoom(NULL);
 135                         break;
 136                 case Button3:
 137                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 138                                 restack(c);
 139                                 resizemouse(c);
 140                         }
 141                         break;
 142                 }
 143         }
 144 }
 145
 146 static void
 147 configurerequest(XEvent *e)
 148 {
 149         unsigned long newmask;
 150         Client *c;
 151         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 152         XEvent synev;
 153         XWindowChanges wc;
 154
 155         if((c = getclient(ev->window))) {
 156                 gravitate(c, True);
 157                 if(ev->value_mask & CWX)
 158                         c->x = ev->x;
 159                 if(ev->value_mask & CWY)
 160                         c->y = ev->y;
 161                 if(ev->value_mask & CWWidth)
 162                         c->w = ev->width;
 163                 if(ev->value_mask & CWHeight)
 164                         c->h = ev->height;
 165                 if(ev->value_mask & CWBorderWidth)
 166                         c->border = ev->border_width;
 167                 gravitate(c, False);
 168                 wc.x = c->x;
 169                 wc.y = c->y;
 170                 wc.width = c->w;
 171                 wc.height = c->h;
 172                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 173                 if(newmask)
 174                         XConfigureWindow(dpy, c->win, newmask, &wc);
 175                 else {
 176                         synev.type = ConfigureNotify;
 177                         synev.xconfigure.display = dpy;
 178                         synev.xconfigure.event = c->win;
 179                         synev.xconfigure.window = c->win;
 180                         synev.xconfigure.x = c->x;
 181                         synev.xconfigure.y = c->y;
 182                         synev.xconfigure.width = c->w;
 183                         synev.xconfigure.height = c->h;
 184                         synev.xconfigure.border_width = c->border;
 185                         synev.xconfigure.above = None;
 186                         /* Send synthetic ConfigureNotify */
 187                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 188                 }
 189                 XSync(dpy, False);
 190                 if(c->isfloat)
 191                         resize(c, False, TopLeft);
 192                 else
 193                         arrange(NULL);
 194         }
 195         else {
 196                 wc.x = ev->x;
 197                 wc.y = ev->y;
 198                 wc.width = ev->width;
 199                 wc.height = ev->height;
 200                 wc.border_width = ev->border_width;
 201                 wc.sibling = ev->above;
 202                 wc.stack_mode = ev->detail;
 203                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 204                 XSync(dpy, False);
 205         }
 206 }
 207
 208 static void
 209 destroynotify(XEvent *e)
 210 {
 211         Client *c;
 212         XDestroyWindowEvent *ev = &e->xdestroywindow;
 213
 214         if((c = getclient(ev->window)))
 215                 unmanage(c);
 216 }
 217
 218 static void
 219 enternotify(XEvent *e)
 220 {
 221         Client *c;
 222         XCrossingEvent *ev = &e->xcrossing;
 223
 224         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 225                 return;
 226
 227         if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
 228                 focus(c);
 229         else if(ev->window == root) {
 230                 issel = True;
 231                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 232                 drawall();
 233         }
 234 }
 235
 236 static void
 237 expose(XEvent *e)
 238 {
 239         Client *c;
 240         XExposeEvent *ev = &e->xexpose;
 241
 242         if(ev->count == 0) {
 243                 if(barwin == ev->window)
 244                         drawstatus();
 245                 else if((c = getctitle(ev->window)))
 246                         drawtitle(c);
 247         }
 248 }
 249
 250 static void
 251 keypress(XEvent *e)
 252 {
 253         static unsigned int len = sizeof(key) / sizeof(key[0]);
 254         unsigned int i;
 255         KeySym keysym;
 256         XKeyEvent *ev = &e->xkey;
 257
 258         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 259         for(i = 0; i < len; i++) {
 260                 if(keysym == key[i].keysym &&
 261                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 262                 {
 263                         if(key[i].func)
 264                                 key[i].func(&key[i].arg);
 265                         return;
 266                 }
 267         }
 268 }
 269
 270 static void
 271 leavenotify(XEvent *e)
 272 {
 273         XCrossingEvent *ev = &e->xcrossing;
 274
 275         if((ev->window == root) && !ev->same_screen) {
 276                 issel = False;
 277                 drawall();
 278         }
 279 }
 280
 281 static void
 282 mappingnotify(XEvent *e)
 283 {
 284         XMappingEvent *ev = &e->xmapping;
 285
 286         XRefreshKeyboardMapping(ev);
 287         if(ev->request == MappingKeyboard)
 288                 grabkeys();
 289 }
 290
 291 static void
 292 maprequest(XEvent *e)
 293 {
 294         static XWindowAttributes wa;
 295         XMapRequestEvent *ev = &e->xmaprequest;
 296
 297         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 298                 return;
 299
 300         if(wa.override_redirect) {
 301                 XSelectInput(dpy, ev->window,
 302                                 (StructureNotifyMask | PropertyChangeMask));
 303                 return;
 304         }
 305
 306         if(!getclient(ev->window))
 307                 manage(ev->window, &wa);
 308 }
 309
 310 static void
 311 propertynotify(XEvent *e)
 312 {
 313         Client *c;
 314         Window trans;
 315         XPropertyEvent *ev = &e->xproperty;
 316
 317         if(ev->state == PropertyDelete)
 318                 return; /* ignore */
 319
 320         if((c = getclient(ev->window))) {
 321                 if(ev->atom == wmatom[WMProtocols]) {
 322                         c->proto = getproto(c->win);
 323                         return;
 324                 }
 325                 switch (ev->atom) {
 326                         default: break;
 327                         case XA_WM_TRANSIENT_FOR:
 328                                 XGetTransientForHint(dpy, c->win, &trans);
 329                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 330                                         arrange(NULL);
 331                                 break;
 332                         case XA_WM_NORMAL_HINTS:
 333                                 setsize(c);
 334                                 break;
 335                 }
 336                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 337                         settitle(c);
 338                         drawtitle(c);
 339                 }
 340         }
 341 }
 342
 343 static void
 344 unmapnotify(XEvent *e)
 345 {
 346         Client *c;
 347         XUnmapEvent *ev = &e->xunmap;
 348
 349         if((c = getclient(ev->window)))
 350                 unmanage(c);
 351 }
 352
 353 /* extern */
 354
 355 void (*handler[LASTEvent]) (XEvent *) = {
 356         [ButtonPress] = buttonpress,
 357         [ConfigureRequest] = configurerequest,
 358         [DestroyNotify] = destroynotify,
 359         [EnterNotify] = enternotify,
 360         [LeaveNotify] = leavenotify,
 361         [Expose] = expose,
 362         [KeyPress] = keypress,
 363         [MappingNotify] = mappingnotify,
 364         [MapRequest] = maprequest,
 365         [PropertyNotify] = propertynotify,
 366         [UnmapNotify] = unmapnotify
 367 };
 368
 369 void
 370 grabkeys()
 371 {
 372         static unsigned int len = sizeof(key) / sizeof(key[0]);
 373         unsigned int i;
 374         KeyCode code;
 375
 376         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 377         for(i = 0; i < len; i++) {
 378                 code = XKeysymToKeycode(dpy, key[i].keysym);
 379                 XGrabKey(dpy, code, key[i].mod, root, True,
 380                                 GrabModeAsync, GrabModeAsync);
 381                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 382                                 GrabModeAsync, GrabModeAsync);
 383                 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
 384                                 GrabModeAsync, GrabModeAsync);
 385                 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
 386                                 GrabModeAsync, GrabModeAsync);
 387         }
 388 }
 389
 390 void
 391 procevent()
 392 {
 393         XEvent ev;
 394
 395         while(XPending(dpy)) {
 396                 XNextEvent(dpy, &ev);
 397                 if(handler[ev.type])
 398                         (handler[ev.type])(&ev); /* call handler */
 399         }
 400 }
 401