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                 if(!c->isfloat && (arrange != dofloat) && c->ismax) {
 161                         synev.type = ConfigureNotify;
 162                         synev.xconfigure.display = dpy;
 163                         synev.xconfigure.event = c->win;
 164                         synev.xconfigure.window = c->win;
 165                         synev.xconfigure.x = sx;
 166                         synev.xconfigure.y = sy + bh;
 167                         synev.xconfigure.width = sw - 2;
 168                         synev.xconfigure.height = sw - 2 - bh;
 169                         synev.xconfigure.border_width = ev->border_width;
 170                         synev.xconfigure.above = None;
 171                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 172                         return;
 173                 }
 174                 gravitate(c, True);
 175                 if(ev->value_mask & CWX)
 176                         c->x = ev->x;
 177                 if(ev->value_mask & CWY)
 178                         c->y = ev->y;
 179                 if(ev->value_mask & CWWidth)
 180                         c->w = ev->width;
 181                 if(ev->value_mask & CWHeight)
 182                         c->h = ev->height;
 183                 if(ev->value_mask & CWBorderWidth)
 184                         c->border = ev->border_width;
 185                 gravitate(c, False);
 186                 wc.x = c->x;
 187                 wc.y = c->y;
 188                 wc.width = c->w;
 189                 wc.height = c->h;
 190                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 191                 if(newmask)
 192                         XConfigureWindow(dpy, c->win, newmask, &wc);
 193                 else {
 194                         synev.type = ConfigureNotify;
 195                         synev.xconfigure.display = dpy;
 196                         synev.xconfigure.event = c->win;
 197                         synev.xconfigure.window = c->win;
 198                         synev.xconfigure.x = c->x;
 199                         synev.xconfigure.y = c->y;
 200                         synev.xconfigure.width = c->w;
 201                         synev.xconfigure.height = c->h;
 202                         synev.xconfigure.border_width = c->border;
 203                         synev.xconfigure.above = None;
 204                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 205                 }
 206                 XSync(dpy, False);
 207                 if(c->isfloat)
 208                         resize(c, False, TopLeft);
 209                 else
 210                         arrange(NULL);
 211         }
 212         else {
 213                 wc.x = ev->x;
 214                 wc.y = ev->y;
 215                 wc.width = ev->width;
 216                 wc.height = ev->height;
 217                 wc.border_width = ev->border_width;
 218                 wc.sibling = ev->above;
 219                 wc.stack_mode = ev->detail;
 220                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 221                 XSync(dpy, False);
 222         }
 223 }
 224
 225 static void
 226 destroynotify(XEvent *e)
 227 {
 228         Client *c;
 229         XDestroyWindowEvent *ev = &e->xdestroywindow;
 230
 231         if((c = getclient(ev->window)))
 232                 unmanage(c);
 233 }
 234
 235 static void
 236 enternotify(XEvent *e)
 237 {
 238         Client *c;
 239         XCrossingEvent *ev = &e->xcrossing;
 240
 241         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 242                 return;
 243
 244         if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
 245                 focus(c);
 246         else if(ev->window == root) {
 247                 issel = True;
 248                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 249                 drawall();
 250         }
 251 }
 252
 253 static void
 254 expose(XEvent *e)
 255 {
 256         Client *c;
 257         XExposeEvent *ev = &e->xexpose;
 258
 259         if(ev->count == 0) {
 260                 if(barwin == ev->window)
 261                         drawstatus();
 262                 else if((c = getctitle(ev->window)))
 263                         drawtitle(c);
 264         }
 265 }
 266
 267 static void
 268 keypress(XEvent *e)
 269 {
 270         static unsigned int len = sizeof(key) / sizeof(key[0]);
 271         unsigned int i;
 272         KeySym keysym;
 273         XKeyEvent *ev = &e->xkey;
 274
 275         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 276         for(i = 0; i < len; i++) {
 277                 if(keysym == key[i].keysym &&
 278                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 279                 {
 280                         if(key[i].func)
 281                                 key[i].func(&key[i].arg);
 282                         return;
 283                 }
 284         }
 285 }
 286
 287 static void
 288 leavenotify(XEvent *e)
 289 {
 290         XCrossingEvent *ev = &e->xcrossing;
 291
 292         if((ev->window == root) && !ev->same_screen) {
 293                 issel = False;
 294                 drawall();
 295         }
 296 }
 297
 298 static void
 299 mappingnotify(XEvent *e)
 300 {
 301         XMappingEvent *ev = &e->xmapping;
 302
 303         XRefreshKeyboardMapping(ev);
 304         if(ev->request == MappingKeyboard)
 305                 grabkeys();
 306 }
 307
 308 static void
 309 maprequest(XEvent *e)
 310 {
 311         static XWindowAttributes wa;
 312         XMapRequestEvent *ev = &e->xmaprequest;
 313
 314         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 315                 return;
 316
 317         if(wa.override_redirect) {
 318                 XSelectInput(dpy, ev->window,
 319                                 (StructureNotifyMask | PropertyChangeMask));
 320                 return;
 321         }
 322
 323         if(!getclient(ev->window))
 324                 manage(ev->window, &wa);
 325 }
 326
 327 static void
 328 propertynotify(XEvent *e)
 329 {
 330         Client *c;
 331         Window trans;
 332         XPropertyEvent *ev = &e->xproperty;
 333
 334         if(ev->state == PropertyDelete)
 335                 return; /* ignore */
 336
 337         if((c = getclient(ev->window))) {
 338                 if(ev->atom == wmatom[WMProtocols]) {
 339                         c->proto = getproto(c->win);
 340                         return;
 341                 }
 342                 switch (ev->atom) {
 343                         default: break;
 344                         case XA_WM_TRANSIENT_FOR:
 345                                 XGetTransientForHint(dpy, c->win, &trans);
 346                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 347                                         arrange(NULL);
 348                                 break;
 349                         case XA_WM_NORMAL_HINTS:
 350                                 setsize(c);
 351                                 break;
 352                 }
 353                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 354                         settitle(c);
 355                         drawtitle(c);
 356                 }
 357         }
 358 }
 359
 360 static void
 361 unmapnotify(XEvent *e)
 362 {
 363         Client *c;
 364         XUnmapEvent *ev = &e->xunmap;
 365
 366         if((c = getclient(ev->window)))
 367                 unmanage(c);
 368 }
 369
 370 /* extern */
 371
 372 void (*handler[LASTEvent]) (XEvent *) = {
 373         [ButtonPress] = buttonpress,
 374         [ConfigureRequest] = configurerequest,
 375         [DestroyNotify] = destroynotify,
 376         [EnterNotify] = enternotify,
 377         [LeaveNotify] = leavenotify,
 378         [Expose] = expose,
 379         [KeyPress] = keypress,
 380         [MappingNotify] = mappingnotify,
 381         [MapRequest] = maprequest,
 382         [PropertyNotify] = propertynotify,
 383         [UnmapNotify] = unmapnotify
 384 };
 385
 386 void
 387 grabkeys()
 388 {
 389         static unsigned int len = sizeof(key) / sizeof(key[0]);
 390         unsigned int i;
 391         KeyCode code;
 392
 393         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 394         for(i = 0; i < len; i++) {
 395                 code = XKeysymToKeycode(dpy, key[i].keysym);
 396                 XGrabKey(dpy, code, key[i].mod, root, True,
 397                                 GrabModeAsync, GrabModeAsync);
 398                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 399                                 GrabModeAsync, GrabModeAsync);
 400                 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
 401                                 GrabModeAsync, GrabModeAsync);
 402                 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
 403                                 GrabModeAsync, GrabModeAsync);
 404         }
 405 }
 406
 407 void
 408 procevent()
 409 {
 410         XEvent ev;
 411
 412         while(XPending(dpy)) {
 413                 XNextEvent(dpy, &ev);
 414                 if(handler[ev.type])
 415                         (handler[ev.type])(&ev); /* call handler */
 416         }
 417 }
 418