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         int x1, y1, ocx, ocy, di;
  26         unsigned int dui;
  27         Window dummy;
  28         XEvent ev;
  29
  30         ocx = c->x;
  31         ocy = c->y;
  32         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  33                         None, cursor[CurMove], CurrentTime) != GrabSuccess)
  34                 return;
  35         c->ismax = False;
  36         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  37         for(;;) {
  38                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  39                 switch (ev.type) {
  40                 case ButtonRelease:
  41                         resize(c, True, TopLeft);
  42                         XUngrabPointer(dpy, CurrentTime);
  43                         return;
  44                 case Expose:
  45                         handler[Expose](&ev);
  46                         break;
  47                 case MotionNotify:
  48                         XSync(dpy, False);
  49                         c->x = ocx + (ev.xmotion.x - x1);
  50                         c->y = ocy + (ev.xmotion.y - y1);
  51                         resize(c, False, TopLeft);
  52                         break;
  53                 }
  54         }
  55 }
  56
  57 static void
  58 resizemouse(Client *c) {
  59         int ocx, ocy;
  60         int nw, nh;
  61         Corner sticky;
  62         XEvent ev;
  63
  64         ocx = c->x;
  65         ocy = c->y;
  66         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  67                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
  68                 return;
  69         c->ismax = False;
  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                 case ButtonRelease:
  75                         resize(c, True, TopLeft);
  76                         XUngrabPointer(dpy, CurrentTime);
  77                         return;
  78                 case Expose:
  79                         handler[Expose](&ev);
  80                         break;
  81                 case MotionNotify:
  82                         XSync(dpy, False);
  83                         if((nw = abs(ocx - ev.xmotion.x)))
  84                                 c->w = nw;
  85                         if((nh = abs(ocy - ev.xmotion.y)))
  86                                 c->h = nh;
  87                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
  88                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
  89                         if(ocx <= ev.xmotion.x)
  90                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
  91                         else
  92                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
  93                         resize(c, True, sticky);
  94                         break;
  95                 }
  96         }
  97 }
  98
  99 static void
 100 buttonpress(XEvent *e) {
 101         int x;
 102         Arg a;
 103         Client *c;
 104         XButtonPressedEvent *ev = &e->xbutton;
 105
 106         if(barwin == ev->window) {
 107                 x = 0;
 108                 for(a.i = 0; a.i < ntags; a.i++) {
 109                         x += textw(tags[a.i]);
 110                         if(ev->x < x) {
 111                                 if(ev->button == Button1) {
 112                                         if(ev->state & MODKEY)
 113                                                 tag(&a);
 114                                         else
 115                                                 view(&a);
 116                                 }
 117                                 else if(ev->button == Button3) {
 118                                         if(ev->state & MODKEY)
 119                                                 toggletag(&a);
 120                                         else
 121                                                 toggleview(&a);
 122                                 }
 123                                 return;
 124                         }
 125                 }
 126                 if(ev->x < x + bmw) {
 127                         if(ev->button == Button1)
 128                                 togglemode(NULL);
 129                         else if(ev->button == Button3)
 130                                 togglestackpos(NULL);
 131                 }
 132         }
 133         else if((c = getclient(ev->window))) {
 134                 focus(c);
 135                 if(CLEANMASK(ev->state) != MODKEY)
 136                         return;
 137                 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
 138                         restack();
 139                         movemouse(c);
 140                 }
 141                 else if(ev->button == Button2)
 142                         zoom(NULL);
 143                 else if(ev->button == Button3 && (arrange == dofloat || c->isfloat)) {
 144                         restack();
 145                         resizemouse(c);
 146                 }
 147         }
 148 }
 149
 150 static void
 151 configurerequest(XEvent *e) {
 152         unsigned long newmask;
 153         Client *c;
 154         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 155         XWindowChanges wc;
 156
 157         if((c = getclient(ev->window))) {
 158                 c->ismax = False;
 159                 gravitate(c, True);
 160                 if(ev->value_mask & CWX)
 161                         c->x = ev->x;
 162                 if(ev->value_mask & CWY)
 163                         c->y = ev->y;
 164                 if(ev->value_mask & CWWidth)
 165                         c->w = ev->width;
 166                 if(ev->value_mask & CWHeight)
 167                         c->h = ev->height;
 168                 if(ev->value_mask & CWBorderWidth)
 169                         c->border = ev->border_width;
 170                 gravitate(c, False);
 171                 wc.x = c->x;
 172                 wc.y = c->y;
 173                 wc.width = c->w;
 174                 wc.height = c->h;
 175                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 176                 if(newmask)
 177                         XConfigureWindow(dpy, c->win, newmask, &wc);
 178                 else
 179                         configure(c);
 180                 XSync(dpy, False);
 181                 if(c->isfloat) {
 182                         resize(c, False, TopLeft);
 183                         if(!isvisible(c))
 184                                 ban(c);
 185                 }
 186                 else
 187                         arrange(NULL);
 188         }
 189         else {
 190                 wc.x = ev->x;
 191                 wc.y = ev->y;
 192                 wc.width = ev->width;
 193                 wc.height = ev->height;
 194                 wc.border_width = ev->border_width;
 195                 wc.sibling = ev->above;
 196                 wc.stack_mode = ev->detail;
 197                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 198                 XSync(dpy, False);
 199         }
 200 }
 201
 202 static void
 203 destroynotify(XEvent *e) {
 204         Client *c;
 205         XDestroyWindowEvent *ev = &e->xdestroywindow;
 206
 207         if((c = getclient(ev->window)))
 208                 unmanage(c);
 209 }
 210
 211 static void
 212 enternotify(XEvent *e) {
 213         Client *c;
 214         XCrossingEvent *ev = &e->xcrossing;
 215
 216         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 217                 return;
 218
 219         if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
 220                 focus(c);
 221         else if(ev->window == root) {
 222                 issel = True;
 223                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 224                 drawall();
 225         }
 226 }
 227
 228 static void
 229 expose(XEvent *e) {
 230         Client *c;
 231         XExposeEvent *ev = &e->xexpose;
 232
 233         if(ev->count == 0) {
 234                 if(barwin == ev->window)
 235                         drawstatus();
 236                 else if((c = getctitle(ev->window)))
 237                         drawtitle(c);
 238         }
 239 }
 240
 241 static void
 242 keypress(XEvent *e) {
 243         static unsigned int len = sizeof(key) / sizeof(key[0]);
 244         unsigned int i;
 245         KeySym keysym;
 246         XKeyEvent *ev = &e->xkey;
 247
 248         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 249         for(i = 0; i < len; i++) {
 250                 if(keysym == key[i].keysym
 251                         && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 252                 {
 253                         if(key[i].func)
 254                                 key[i].func(&key[i].arg);
 255                         return;
 256                 }
 257         }
 258 }
 259
 260 static void
 261 leavenotify(XEvent *e) {
 262         XCrossingEvent *ev = &e->xcrossing;
 263
 264         if((ev->window == root) && !ev->same_screen) {
 265                 issel = False;
 266                 drawall();
 267         }
 268 }
 269
 270 static void
 271 mappingnotify(XEvent *e) {
 272         XMappingEvent *ev = &e->xmapping;
 273
 274         XRefreshKeyboardMapping(ev);
 275         if(ev->request == MappingKeyboard)
 276                 grabkeys();
 277 }
 278
 279 static void
 280 maprequest(XEvent *e) {
 281         static XWindowAttributes wa;
 282         XMapRequestEvent *ev = &e->xmaprequest;
 283
 284         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 285                 return;
 286
 287         if(wa.override_redirect) {
 288                 XSelectInput(dpy, ev->window,
 289                                 (StructureNotifyMask | PropertyChangeMask));
 290                 return;
 291         }
 292
 293         if(!getclient(ev->window))
 294                 manage(ev->window, &wa);
 295 }
 296
 297 static void
 298 propertynotify(XEvent *e) {
 299         Client *c;
 300         Window trans;
 301         XPropertyEvent *ev = &e->xproperty;
 302
 303         if(ev->state == PropertyDelete)
 304                 return; /* ignore */
 305
 306         if((c = getclient(ev->window))) {
 307                 if(ev->atom == wmatom[WMProtocols]) {
 308                         c->proto = getproto(c->win);
 309                         return;
 310                 }
 311                 switch (ev->atom) {
 312                         default: break;
 313                         case XA_WM_TRANSIENT_FOR:
 314                                 XGetTransientForHint(dpy, c->win, &trans);
 315                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 316                                         arrange(NULL);
 317                                 break;
 318                         case XA_WM_NORMAL_HINTS:
 319                                 updatesize(c);
 320                                 break;
 321                 }
 322                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 323                         updatetitle(c);
 324                         resizetitle(c);
 325                         drawtitle(c);
 326                 }
 327         }
 328 }
 329
 330 static void
 331 unmapnotify(XEvent *e) {
 332         Client *c;
 333         XUnmapEvent *ev = &e->xunmap;
 334
 335         if((c = getclient(ev->window)))
 336                 unmanage(c);
 337 }
 338
 339 /* extern */
 340
 341 void (*handler[LASTEvent]) (XEvent *) = {
 342         [ButtonPress] = buttonpress,
 343         [ConfigureRequest] = configurerequest,
 344         [DestroyNotify] = destroynotify,
 345         [EnterNotify] = enternotify,
 346         [LeaveNotify] = leavenotify,
 347         [Expose] = expose,
 348         [KeyPress] = keypress,
 349         [MappingNotify] = mappingnotify,
 350         [MapRequest] = maprequest,
 351         [PropertyNotify] = propertynotify,
 352         [UnmapNotify] = unmapnotify
 353 };
 354
 355 void
 356 grabkeys(void) {
 357         static unsigned int len = sizeof(key) / sizeof(key[0]);
 358         unsigned int i;
 359         KeyCode code;
 360
 361         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 362         for(i = 0; i < len; i++) {
 363                 code = XKeysymToKeycode(dpy, key[i].keysym);
 364                 XGrabKey(dpy, code, key[i].mod, root, True,
 365                                 GrabModeAsync, GrabModeAsync);
 366                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 367                                 GrabModeAsync, GrabModeAsync);
 368                 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
 369                                 GrabModeAsync, GrabModeAsync);
 370                 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
 371                                 GrabModeAsync, GrabModeAsync);
 372         }
 373 }
 374
 375 void
 376 procevent(void) {
 377         XEvent ev;
 378
 379         while(XPending(dpy)) {
 380                 XNextEvent(dpy, &ev);
 381                 if(handler[ev.type])
 382                         (handler[ev.type])(&ev); /* call handler */
 383         }
 384 }