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