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         int ox, oy, ow, oh;
 154         unsigned long newmask;
 155         Client *c;
 156         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 157         XEvent synev;
 158         XWindowChanges wc;
 159
 160         if((c = getclient(ev->window))) {
 161                 ox = c->x;
 162                 oy = c->y;
 163                 ow = c->w;
 164                 oh = c->h;
 165                 gravitate(c, True);
 166                 if(ev->value_mask & CWX)
 167                         c->x = ev->x;
 168                 if(ev->value_mask & CWY)
 169                         c->y = ev->y;
 170                 if(ev->value_mask & CWWidth)
 171                         c->w = ev->width;
 172                 if(ev->value_mask & CWHeight)
 173                         c->h = ev->height;
 174                 if(ev->value_mask & CWBorderWidth)
 175                         c->border = ev->border_width;
 176                 gravitate(c, False);
 177                 wc.x = c->x;
 178                 wc.y = c->y;
 179                 wc.width = c->w;
 180                 wc.height = c->h;
 181                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 182                 if(newmask)
 183                         XConfigureWindow(dpy, c->win, newmask, &wc);
 184                 else {
 185                         synev.type = ConfigureNotify;
 186                         synev.xconfigure.display = dpy;
 187                         synev.xconfigure.event = c->win;
 188                         synev.xconfigure.window = c->win;
 189                         synev.xconfigure.x = c->x;
 190                         synev.xconfigure.y = c->y;
 191                         synev.xconfigure.width = c->w;
 192                         synev.xconfigure.height = c->h;
 193                         synev.xconfigure.border_width = c->border;
 194                         synev.xconfigure.above = None;
 195                         /* Send synthetic ConfigureNotify */
 196                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 197                 }
 198                 XSync(dpy, False);
 199                 if(c->isfloat)
 200                         resize(c, False, TopLeft);
 201                 else if(c->ismax) {
 202                         resize(c, False, TopLeft);
 203                         c->x = ox;
 204                         c->y = oy;
 205                         c->w = ow;
 206                         c->h = oh;
 207                 }
 208                 else
 209                         arrange(NULL);
 210         }
 211         else {
 212                 wc.x = ev->x;
 213                 wc.y = ev->y;
 214                 wc.width = ev->width;
 215                 wc.height = ev->height;
 216                 wc.border_width = ev->border_width;
 217                 wc.sibling = ev->above;
 218                 wc.stack_mode = ev->detail;
 219                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 220                 XSync(dpy, False);
 221         }
 222 }
 223
 224 static void
 225 destroynotify(XEvent *e)
 226 {
 227         Client *c;
 228         XDestroyWindowEvent *ev = &e->xdestroywindow;
 229
 230         if((c = getclient(ev->window)))
 231                 unmanage(c);
 232 }
 233
 234 static void
 235 enternotify(XEvent *e)
 236 {
 237         Client *c;
 238         XCrossingEvent *ev = &e->xcrossing;
 239
 240         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 241                 return;
 242
 243         if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
 244                 focus(c);
 245         else if(ev->window == root) {
 246                 issel = True;
 247                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 248                 drawall();
 249         }
 250 }
 251
 252 static void
 253 expose(XEvent *e)
 254 {
 255         Client *c;
 256         XExposeEvent *ev = &e->xexpose;
 257
 258         if(ev->count == 0) {
 259                 if(barwin == ev->window)
 260                         drawstatus();
 261                 else if((c = getctitle(ev->window)))
 262                         drawtitle(c);
 263         }
 264 }
 265
 266 static void
 267 keypress(XEvent *e)
 268 {
 269         static unsigned int len = sizeof(key) / sizeof(key[0]);
 270         unsigned int i;
 271         KeySym keysym;
 272         XKeyEvent *ev = &e->xkey;
 273
 274         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 275         for(i = 0; i < len; i++) {
 276                 if(keysym == key[i].keysym &&
 277                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 278                 {
 279                         if(key[i].func)
 280                                 key[i].func(&key[i].arg);
 281                         return;
 282                 }
 283         }
 284 }
 285
 286 static void
 287 leavenotify(XEvent *e)
 288 {
 289         XCrossingEvent *ev = &e->xcrossing;
 290
 291         if((ev->window == root) && !ev->same_screen) {
 292                 issel = False;
 293                 drawall();
 294         }
 295 }
 296
 297 static void
 298 mappingnotify(XEvent *e)
 299 {
 300         XMappingEvent *ev = &e->xmapping;
 301
 302         XRefreshKeyboardMapping(ev);
 303         if(ev->request == MappingKeyboard)
 304                 grabkeys();
 305 }
 306
 307 static void
 308 maprequest(XEvent *e)
 309 {
 310         static XWindowAttributes wa;
 311         XMapRequestEvent *ev = &e->xmaprequest;
 312
 313         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 314                 return;
 315
 316         if(wa.override_redirect) {
 317                 XSelectInput(dpy, ev->window,
 318                                 (StructureNotifyMask | PropertyChangeMask));
 319                 return;
 320         }
 321
 322         if(!getclient(ev->window))
 323                 manage(ev->window, &wa);
 324 }
 325
 326 static void
 327 propertynotify(XEvent *e)
 328 {
 329         Client *c;
 330         Window trans;
 331         XPropertyEvent *ev = &e->xproperty;
 332
 333         if(ev->state == PropertyDelete)
 334                 return; /* ignore */
 335
 336         if((c = getclient(ev->window))) {
 337                 if(ev->atom == wmatom[WMProtocols]) {
 338                         c->proto = getproto(c->win);
 339                         return;
 340                 }
 341                 switch (ev->atom) {
 342                         default: break;
 343                         case XA_WM_TRANSIENT_FOR:
 344                                 XGetTransientForHint(dpy, c->win, &trans);
 345                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 346                                         arrange(NULL);
 347                                 break;
 348                         case XA_WM_NORMAL_HINTS:
 349                                 setsize(c);
 350                                 break;
 351                 }
 352                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 353                         settitle(c);
 354                         drawtitle(c);
 355                 }
 356         }
 357 }
 358
 359 static void
 360 unmapnotify(XEvent *e)
 361 {
 362         Client *c;
 363         XUnmapEvent *ev = &e->xunmap;
 364
 365         if((c = getclient(ev->window)))
 366                 unmanage(c);
 367 }
 368
 369 /* extern */
 370
 371 void (*handler[LASTEvent]) (XEvent *) = {
 372         [ButtonPress] = buttonpress,
 373         [ConfigureRequest] = configurerequest,
 374         [DestroyNotify] = destroynotify,
 375         [EnterNotify] = enternotify,
 376         [LeaveNotify] = leavenotify,
 377         [Expose] = expose,
 378         [KeyPress] = keypress,
 379         [MappingNotify] = mappingnotify,
 380         [MapRequest] = maprequest,
 381         [PropertyNotify] = propertynotify,
 382         [UnmapNotify] = unmapnotify
 383 };
 384
 385 void
 386 grabkeys()
 387 {
 388         static unsigned int len = sizeof(key) / sizeof(key[0]);
 389         unsigned int i;
 390         KeyCode code;
 391
 392         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 393         for(i = 0; i < len; i++) {
 394                 code = XKeysymToKeycode(dpy, key[i].keysym);
 395                 XGrabKey(dpy, code, key[i].mod, root, True,
 396                                 GrabModeAsync, GrabModeAsync);
 397                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 398                                 GrabModeAsync, GrabModeAsync);
 399                 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
 400                                 GrabModeAsync, GrabModeAsync);
 401                 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
 402                                 GrabModeAsync, GrabModeAsync);
 403         }
 404 }
 405
 406 void
 407 procevent()
 408 {
 409         XEvent ev;
 410
 411         while(XPending(dpy)) {
 412                 XNextEvent(dpy, &ev);
 413                 if(handler[ev.type])
 414                         (handler[ev.type])(&ev); /* call handler */
 415         }
 416 }
 417