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                                 switch(ev->button) {
 113                                 case Button1:
 114                                         if(ev->state & MODKEY)
 115                                                 tag(&a);
 116                                         else
 117                                                 view(&a);
 118                                         break;
 119                                 case Button3:
 120                                         if(ev->state & MODKEY)
 121                                                 toggletag(&a);
 122                                         else
 123                                                 toggleview(&a);
 124                                         break;
 125                                 }
 126                                 return;
 127                         }
 128                 }
 129                 if(ev->x < x + bmw) {
 130                         if(ev->button == Button1)
 131                                 togglemode(NULL);
 132                 }
 133         }
 134         else if((c = getclient(ev->window))) {
 135                 focus(c);
 136                 if(CLEANMASK(ev->state) != MODKEY)
 137                         return;
 138                 switch(ev->button) {
 139                 default:
 140                         break;
 141                 case Button1:
 142                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 143                                 restack(c);
 144                                 movemouse(c);
 145                         }
 146                         break;
 147                 case Button2:
 148                         zoom(NULL);
 149                         break;
 150                 case Button3:
 151                         if(!c->ismax && (arrange == dofloat || c->isfloat)) {
 152                                 restack(c);
 153                                 resizemouse(c);
 154                         }
 155                         break;
 156                 }
 157         }
 158 }
 159
 160 static void
 161 synconfig(Client *c, int x, int y, int w, int h, unsigned int border)
 162 {
 163         XEvent synev;
 164
 165         synev.type = ConfigureNotify;
 166         synev.xconfigure.display = dpy;
 167         synev.xconfigure.event = c->win;
 168         synev.xconfigure.window = c->win;
 169         synev.xconfigure.x = x;
 170         synev.xconfigure.y = y;
 171         synev.xconfigure.width = w;
 172         synev.xconfigure.height = h;
 173         synev.xconfigure.border_width = border;
 174         synev.xconfigure.above = None;
 175         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 176 }
 177
 178 static void
 179 configurerequest(XEvent *e)
 180 {
 181         unsigned long newmask;
 182         Client *c;
 183         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 184         XWindowChanges wc;
 185
 186         if((c = getclient(ev->window))) {
 187                 if(!c->isfloat && (arrange != dofloat) && c->ismax) {
 188                         synconfig(c, sx, sy + bh, sw - 2, sh - 2 - bh, ev->border_width);
 189                         XSync(dpy, False);
 190                         return;
 191                 }
 192                 gravitate(c, True);
 193                 if(ev->value_mask & CWX)
 194                         c->x = ev->x;
 195                 if(ev->value_mask & CWY)
 196                         c->y = ev->y;
 197                 if(ev->value_mask & CWWidth)
 198                         c->w = ev->width;
 199                 if(ev->value_mask & CWHeight)
 200                         c->h = ev->height;
 201                 if(ev->value_mask & CWBorderWidth)
 202                         c->border = ev->border_width;
 203                 gravitate(c, False);
 204                 wc.x = c->x;
 205                 wc.y = c->y;
 206                 wc.width = c->w;
 207                 wc.height = c->h;
 208                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 209                 if(newmask)
 210                         XConfigureWindow(dpy, c->win, newmask, &wc);
 211                 else
 212                         synconfig(c, c->x, c->y, c->w, c->h, c->border);
 213                 XSync(dpy, False);
 214                 if(c->isfloat)
 215                         resize(c, False, TopLeft);
 216                 else
 217                         arrange(NULL);
 218         }
 219         else {
 220                 wc.x = ev->x;
 221                 wc.y = ev->y;
 222                 wc.width = ev->width;
 223                 wc.height = ev->height;
 224                 wc.border_width = ev->border_width;
 225                 wc.sibling = ev->above;
 226                 wc.stack_mode = ev->detail;
 227                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 228                 XSync(dpy, False);
 229         }
 230 }
 231
 232 static void
 233 destroynotify(XEvent *e)
 234 {
 235         Client *c;
 236         XDestroyWindowEvent *ev = &e->xdestroywindow;
 237
 238         if((c = getclient(ev->window)))
 239                 unmanage(c);
 240 }
 241
 242 static void
 243 enternotify(XEvent *e)
 244 {
 245         Client *c;
 246         XCrossingEvent *ev = &e->xcrossing;
 247
 248         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 249                 return;
 250
 251         if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
 252                 focus(c);
 253         else if(ev->window == root) {
 254                 issel = True;
 255                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 256                 drawall();
 257         }
 258 }
 259
 260 static void
 261 expose(XEvent *e)
 262 {
 263         Client *c;
 264         XExposeEvent *ev = &e->xexpose;
 265
 266         if(ev->count == 0) {
 267                 if(barwin == ev->window)
 268                         drawstatus();
 269                 else if((c = getctitle(ev->window)))
 270                         drawtitle(c);
 271         }
 272 }
 273
 274 static void
 275 keypress(XEvent *e)
 276 {
 277         static unsigned int len = sizeof(key) / sizeof(key[0]);
 278         unsigned int i;
 279         KeySym keysym;
 280         XKeyEvent *ev = &e->xkey;
 281
 282         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 283         for(i = 0; i < len; i++) {
 284                 if(keysym == key[i].keysym &&
 285                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 286                 {
 287                         if(key[i].func)
 288                                 key[i].func(&key[i].arg);
 289                         return;
 290                 }
 291         }
 292 }
 293
 294 static void
 295 leavenotify(XEvent *e)
 296 {
 297         XCrossingEvent *ev = &e->xcrossing;
 298
 299         if((ev->window == root) && !ev->same_screen) {
 300                 issel = False;
 301                 drawall();
 302         }
 303 }
 304
 305 static void
 306 mappingnotify(XEvent *e)
 307 {
 308         XMappingEvent *ev = &e->xmapping;
 309
 310         XRefreshKeyboardMapping(ev);
 311         if(ev->request == MappingKeyboard)
 312                 grabkeys();
 313 }
 314
 315 static void
 316 maprequest(XEvent *e)
 317 {
 318         static XWindowAttributes wa;
 319         XMapRequestEvent *ev = &e->xmaprequest;
 320
 321         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 322                 return;
 323
 324         if(wa.override_redirect) {
 325                 XSelectInput(dpy, ev->window,
 326                                 (StructureNotifyMask | PropertyChangeMask));
 327                 return;
 328         }
 329
 330         if(!getclient(ev->window))
 331                 manage(ev->window, &wa);
 332 }
 333
 334 static void
 335 propertynotify(XEvent *e)
 336 {
 337         Client *c;
 338         Window trans;
 339         XPropertyEvent *ev = &e->xproperty;
 340
 341         if(ev->state == PropertyDelete)
 342                 return; /* ignore */
 343
 344         if((c = getclient(ev->window))) {
 345                 if(ev->atom == wmatom[WMProtocols]) {
 346                         c->proto = getproto(c->win);
 347                         return;
 348                 }
 349                 switch (ev->atom) {
 350                         default: break;
 351                         case XA_WM_TRANSIENT_FOR:
 352                                 XGetTransientForHint(dpy, c->win, &trans);
 353                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 354                                         arrange(NULL);
 355                                 break;
 356                         case XA_WM_NORMAL_HINTS:
 357                                 setsize(c);
 358                                 break;
 359                 }
 360                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 361                         settitle(c);
 362                         drawtitle(c);
 363                 }
 364         }
 365 }
 366
 367 static void
 368 unmapnotify(XEvent *e)
 369 {
 370         Client *c;
 371         XUnmapEvent *ev = &e->xunmap;
 372
 373         if((c = getclient(ev->window)))
 374                 unmanage(c);
 375 }
 376
 377 /* extern */
 378
 379 void (*handler[LASTEvent]) (XEvent *) = {
 380         [ButtonPress] = buttonpress,
 381         [ConfigureRequest] = configurerequest,
 382         [DestroyNotify] = destroynotify,
 383         [EnterNotify] = enternotify,
 384         [LeaveNotify] = leavenotify,
 385         [Expose] = expose,
 386         [KeyPress] = keypress,
 387         [MappingNotify] = mappingnotify,
 388         [MapRequest] = maprequest,
 389         [PropertyNotify] = propertynotify,
 390         [UnmapNotify] = unmapnotify
 391 };
 392
 393 void
 394 grabkeys()
 395 {
 396         static unsigned int len = sizeof(key) / sizeof(key[0]);
 397         unsigned int i;
 398         KeyCode code;
 399
 400         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 401         for(i = 0; i < len; i++) {
 402                 code = XKeysymToKeycode(dpy, key[i].keysym);
 403                 XGrabKey(dpy, code, key[i].mod, root, True,
 404                                 GrabModeAsync, GrabModeAsync);
 405                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 406                                 GrabModeAsync, GrabModeAsync);
 407                 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
 408                                 GrabModeAsync, GrabModeAsync);
 409                 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
 410                                 GrabModeAsync, GrabModeAsync);
 411         }
 412 }
 413
 414 void
 415 procevent()
 416 {
 417         XEvent ev;
 418
 419         while(XPending(dpy)) {
 420                 XNextEvent(dpy, &ev);
 421                 if(handler[ev.type])
 422                         (handler[ev.type])(&ev); /* call handler */
 423         }
 424 }
 425