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                 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
 150 static void
 151 configurerequest(XEvent *e)
 152 {
 153         unsigned long newmask;
 154         Client *c;
 155         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 156         XEvent synev;
 157         XWindowChanges wc;
 158
 159         if((c = getclient(ev->window))) {
 160                 gravitate(c, True);
 161                 if(ev->value_mask & CWX)
 162                         c->x = ev->x;
 163                 if(ev->value_mask & CWY)
 164                         c->y = ev->y;
 165                 if(ev->value_mask & CWWidth)
 166                         c->w = ev->width;
 167                 if(ev->value_mask & CWHeight)
 168                         c->h = ev->height;
 169                 if(ev->value_mask & CWBorderWidth)
 170                         c->border = ev->border_width;
 171                 gravitate(c, False);
 172                 wc.x = c->x;
 173                 wc.y = c->y;
 174                 wc.width = c->w;
 175                 wc.height = c->h;
 176                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 177                 if(newmask)
 178                         XConfigureWindow(dpy, c->win, newmask, &wc);
 179                 else {
 180                         synev.type = ConfigureNotify;
 181                         synev.xconfigure.display = dpy;
 182                         synev.xconfigure.event = c->win;
 183                         synev.xconfigure.window = c->win;
 184                         synev.xconfigure.x = c->x;
 185                         synev.xconfigure.y = c->y;
 186                         synev.xconfigure.width = c->w;
 187                         synev.xconfigure.height = c->h;
 188                         synev.xconfigure.border_width = c->border;
 189                         synev.xconfigure.above = None;
 190                         /* Send synthetic ConfigureNotify */
 191                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 192                 }
 193                 XSync(dpy, False);
 194                 if(c->isfloat)
 195                         resize(c, False, TopLeft);
 196                 else
 197                         arrange(NULL);
 198         }
 199         else {
 200                 wc.x = ev->x;
 201                 wc.y = ev->y;
 202                 wc.width = ev->width;
 203                 wc.height = ev->height;
 204                 wc.border_width = ev->border_width;
 205                 wc.sibling = ev->above;
 206                 wc.stack_mode = ev->detail;
 207                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 208                 XSync(dpy, False);
 209         }
 210 }
 211
 212 static void
 213 destroynotify(XEvent *e)
 214 {
 215         Client *c;
 216         XDestroyWindowEvent *ev = &e->xdestroywindow;
 217
 218         if((c = getclient(ev->window)))
 219                 unmanage(c);
 220 }
 221
 222 static void
 223 enternotify(XEvent *e)
 224 {
 225         Client *c;
 226         XCrossingEvent *ev = &e->xcrossing;
 227
 228         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 229                 return;
 230
 231         if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
 232                 focus(c);
 233         else if(ev->window == root) {
 234                 issel = True;
 235                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 236                 drawall();
 237         }
 238 }
 239
 240 static void
 241 expose(XEvent *e)
 242 {
 243         Client *c;
 244         XExposeEvent *ev = &e->xexpose;
 245
 246         if(ev->count == 0) {
 247                 if(barwin == ev->window)
 248                         drawstatus();
 249                 else if((c = getctitle(ev->window)))
 250                         drawtitle(c);
 251         }
 252 }
 253
 254 static void
 255 keypress(XEvent *e)
 256 {
 257         static unsigned int len = sizeof(key) / sizeof(key[0]);
 258         unsigned int i;
 259         KeySym keysym;
 260         XKeyEvent *ev = &e->xkey;
 261
 262         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 263         for(i = 0; i < len; i++) {
 264                 if(keysym == key[i].keysym &&
 265                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 266                 {
 267                         if(key[i].func)
 268                                 key[i].func(&key[i].arg);
 269                         return;
 270                 }
 271         }
 272 }
 273
 274 static void
 275 leavenotify(XEvent *e)
 276 {
 277         XCrossingEvent *ev = &e->xcrossing;
 278
 279         if((ev->window == root) && !ev->same_screen) {
 280                 issel = False;
 281                 drawall();
 282         }
 283 }
 284
 285 static void
 286 mappingnotify(XEvent *e)
 287 {
 288         XMappingEvent *ev = &e->xmapping;
 289
 290         XRefreshKeyboardMapping(ev);
 291         if(ev->request == MappingKeyboard)
 292                 grabkeys();
 293 }
 294
 295 static void
 296 maprequest(XEvent *e)
 297 {
 298         static XWindowAttributes wa;
 299         XMapRequestEvent *ev = &e->xmaprequest;
 300
 301         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 302                 return;
 303
 304         if(wa.override_redirect) {
 305                 XSelectInput(dpy, ev->window,
 306                                 (StructureNotifyMask | PropertyChangeMask));
 307                 return;
 308         }
 309
 310         if(!getclient(ev->window))
 311                 manage(ev->window, &wa);
 312 }
 313
 314 static void
 315 propertynotify(XEvent *e)
 316 {
 317         Client *c;
 318         Window trans;
 319         XPropertyEvent *ev = &e->xproperty;
 320
 321         if(ev->state == PropertyDelete)
 322                 return; /* ignore */
 323
 324         if((c = getclient(ev->window))) {
 325                 if(ev->atom == wmatom[WMProtocols]) {
 326                         c->proto = getproto(c->win);
 327                         return;
 328                 }
 329                 switch (ev->atom) {
 330                         default: break;
 331                         case XA_WM_TRANSIENT_FOR:
 332                                 XGetTransientForHint(dpy, c->win, &trans);
 333                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 334                                         arrange(NULL);
 335                                 break;
 336                         case XA_WM_NORMAL_HINTS:
 337                                 setsize(c);
 338                                 break;
 339                 }
 340                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 341                         settitle(c);
 342                         drawtitle(c);
 343                 }
 344         }
 345 }
 346
 347 static void
 348 unmapnotify(XEvent *e)
 349 {
 350         Client *c;
 351         XUnmapEvent *ev = &e->xunmap;
 352
 353         if((c = getclient(ev->window)))
 354                 unmanage(c);
 355 }
 356
 357 /* extern */
 358
 359 void (*handler[LASTEvent]) (XEvent *) = {
 360         [ButtonPress] = buttonpress,
 361         [ConfigureRequest] = configurerequest,
 362         [DestroyNotify] = destroynotify,
 363         [EnterNotify] = enternotify,
 364         [LeaveNotify] = leavenotify,
 365         [Expose] = expose,
 366         [KeyPress] = keypress,
 367         [MappingNotify] = mappingnotify,
 368         [MapRequest] = maprequest,
 369         [PropertyNotify] = propertynotify,
 370         [UnmapNotify] = unmapnotify
 371 };
 372
 373 void
 374 grabkeys()
 375 {
 376         static unsigned int len = sizeof(key) / sizeof(key[0]);
 377         unsigned int i;
 378         KeyCode code;
 379
 380         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 381         for(i = 0; i < len; i++) {
 382                 code = XKeysymToKeycode(dpy, key[i].keysym);
 383                 XGrabKey(dpy, code, key[i].mod, root, True,
 384                                 GrabModeAsync, GrabModeAsync);
 385                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 386                                 GrabModeAsync, GrabModeAsync);
 387                 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
 388                                 GrabModeAsync, GrabModeAsync);
 389                 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
 390                                 GrabModeAsync, GrabModeAsync);
 391         }
 392 }
 393
 394 void
 395 procevent()
 396 {
 397         XEvent ev;
 398
 399         while(XPending(dpy)) {
 400                 XNextEvent(dpy, &ev);
 401                 if(handler[ev.type])
 402                         (handler[ev.type])(&ev); /* call handler */
 403         }
 404 }
 405