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