event.c

   1 /* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   2  * See LICENSE file for license details.
   3  */
   4 #include "dwm.h"
   5 #include <stdlib.h>
   6 #include <X11/keysym.h>
   7 #include <X11/Xatom.h>
   8
   9 /* static */
  10
  11 typedef struct {
  12         unsigned long mod;
  13         KeySym keysym;
  14         void (*func)(Arg *arg);
  15         Arg arg;
  16 } Key;
  17
  18 KEYS
  19
  20 #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
  21
  22 static void
  23 movemouse(Client *c) {
  24         int x1, y1, ocx, ocy, di;
  25         unsigned int dui;
  26         Window dummy;
  27         XEvent ev;
  28
  29         ocx = c->x;
  30         ocy = c->y;
  31         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  32                         None, cursor[CurMove], CurrentTime) != GrabSuccess)
  33                 return;
  34         c->ismax = False;
  35         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  36         for(;;) {
  37                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  38                 switch (ev.type) {
  39                 case ButtonRelease:
  40                         resize(c, True, TopLeft);
  41                         XUngrabPointer(dpy, CurrentTime);
  42                         return;
  43                 case Expose:
  44                         handler[Expose](&ev);
  45                         break;
  46                 case MotionNotify:
  47                         XSync(dpy, False);
  48                         c->x = ocx + (ev.xmotion.x - x1);
  49                         c->y = ocy + (ev.xmotion.y - y1);
  50                         resize(c, False, TopLeft);
  51                         break;
  52                 }
  53         }
  54 }
  55
  56 static void
  57 resizemouse(Client *c) {
  58         int ocx, ocy;
  59         int nw, nh;
  60         Corner sticky;
  61         XEvent ev;
  62
  63         ocx = c->x;
  64         ocy = c->y;
  65         if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  66                         None, cursor[CurResize], CurrentTime) != GrabSuccess)
  67                 return;
  68         c->ismax = False;
  69         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
  70         for(;;) {
  71                 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
  72                 switch(ev.type) {
  73                 case ButtonRelease:
  74                         resize(c, True, TopLeft);
  75                         XUngrabPointer(dpy, CurrentTime);
  76                         return;
  77                 case Expose:
  78                         handler[Expose](&ev);
  79                         break;
  80                 case MotionNotify:
  81                         XSync(dpy, False);
  82                         if((nw = abs(ocx - ev.xmotion.x)))
  83                                 c->w = nw;
  84                         if((nh = abs(ocy - ev.xmotion.y)))
  85                                 c->h = nh;
  86                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
  87                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
  88                         if(ocx <= ev.xmotion.x)
  89                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
  90                         else
  91                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
  92                         resize(c, True, sticky);
  93                         break;
  94                 }
  95         }
  96 }
  97
  98 static void
  99 buttonpress(XEvent *e) {
 100         int x;
 101         Arg a;
 102         Client *c;
 103         XButtonPressedEvent *ev = &e->xbutton;
 104
 105         if(barwin == ev->window) {
 106                 x = 0;
 107                 for(a.i = 0; a.i < ntags; a.i++) {
 108                         x += textw(tags[a.i]);
 109                         if(ev->x < x) {
 110                                 if(ev->button == Button1) {
 111                                         if(ev->state & MODKEY)
 112                                                 tag(&a);
 113                                         else
 114                                                 view(&a);
 115                                 }
 116                                 else if(ev->button == Button3) {
 117                                         if(ev->state & MODKEY)
 118                                                 toggletag(&a);
 119                                         else
 120                                                 toggleview(&a);
 121                                 }
 122                                 return;
 123                         }
 124                 }
 125                 if((ev->x < x + bmw) && (ev->button == Button1))
 126                         togglemode(NULL);
 127         }
 128         else if((c = getclient(ev->window))) {
 129                 focus(c);
 130                 if(CLEANMASK(ev->state) != MODKEY)
 131                         return;
 132                 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
 133                         restack();
 134                         movemouse(c);
 135                 }
 136                 else if(ev->button == Button2)
 137                         zoom(NULL);
 138                 else if(ev->button == Button3 && (arrange == dofloat || c->isfloat)) {
 139                         restack();
 140                         resizemouse(c);
 141                 }
 142         }
 143 }
 144
 145 static void
 146 configurerequest(XEvent *e) {
 147         unsigned long newmask;
 148         Client *c;
 149         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 150         XWindowChanges wc;
 151
 152         if((c = getclient(ev->window))) {
 153                 c->ismax = False;
 154                 gravitate(c, True);
 155                 if(ev->value_mask & CWX)
 156                         c->x = ev->x;
 157                 if(ev->value_mask & CWY)
 158                         c->y = ev->y;
 159                 if(ev->value_mask & CWWidth)
 160                         c->w = ev->width;
 161                 if(ev->value_mask & CWHeight)
 162                         c->h = ev->height;
 163                 if(ev->value_mask & CWBorderWidth)
 164                         c->border = ev->border_width;
 165                 gravitate(c, False);
 166                 wc.x = c->x;
 167                 wc.y = c->y;
 168                 wc.width = c->w;
 169                 wc.height = c->h;
 170                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 171                 if(newmask)
 172                         XConfigureWindow(dpy, c->win, newmask, &wc);
 173                 else
 174                         configure(c);
 175                 XSync(dpy, False);
 176                 if(c->isfloat) {
 177                         resize(c, False, TopLeft);
 178                         if(!isvisible(c))
 179                                 ban(c);
 180                 }
 181                 else
 182                         arrange(NULL);
 183         }
 184         else {
 185                 wc.x = ev->x;
 186                 wc.y = ev->y;
 187                 wc.width = ev->width;
 188                 wc.height = ev->height;
 189                 wc.border_width = ev->border_width;
 190                 wc.sibling = ev->above;
 191                 wc.stack_mode = ev->detail;
 192                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 193                 XSync(dpy, False);
 194         }
 195 }
 196
 197 static void
 198 destroynotify(XEvent *e) {
 199         Client *c;
 200         XDestroyWindowEvent *ev = &e->xdestroywindow;
 201
 202         if((c = getclient(ev->window)))
 203                 unmanage(c);
 204 }
 205
 206 static void
 207 enternotify(XEvent *e) {
 208         Client *c;
 209         XCrossingEvent *ev = &e->xcrossing;
 210
 211         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 212                 return;
 213         if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
 214                 focus(c);
 215         else if(ev->window == root) {
 216                 issel = True;
 217                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 218                 drawall();
 219         }
 220 }
 221
 222 static void
 223 expose(XEvent *e) {
 224         Client *c;
 225         XExposeEvent *ev = &e->xexpose;
 226
 227         if(ev->count == 0) {
 228                 if(barwin == ev->window)
 229                         drawstatus();
 230                 else if((c = getctitle(ev->window)))
 231                         drawtitle(c);
 232         }
 233 }
 234
 235 static void
 236 keypress(XEvent *e) {
 237         static unsigned int len = sizeof(key) / sizeof(key[0]);
 238         unsigned int i;
 239         KeySym keysym;
 240         XKeyEvent *ev = &e->xkey;
 241
 242         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 243         for(i = 0; i < len; i++) {
 244                 if(keysym == key[i].keysym
 245                         && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
 246                 {
 247                         if(key[i].func)
 248                                 key[i].func(&key[i].arg);
 249                         return;
 250                 }
 251         }
 252 }
 253
 254 static void
 255 leavenotify(XEvent *e) {
 256         XCrossingEvent *ev = &e->xcrossing;
 257
 258         if((ev->window == root) && !ev->same_screen) {
 259                 issel = False;
 260                 drawall();
 261         }
 262 }
 263
 264 static void
 265 mappingnotify(XEvent *e) {
 266         XMappingEvent *ev = &e->xmapping;
 267
 268         XRefreshKeyboardMapping(ev);
 269         if(ev->request == MappingKeyboard)
 270                 grabkeys();
 271 }
 272
 273 static void
 274 maprequest(XEvent *e) {
 275         static XWindowAttributes wa;
 276         XMapRequestEvent *ev = &e->xmaprequest;
 277
 278         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 279                 return;
 280         if(wa.override_redirect) {
 281                 XSelectInput(dpy, ev->window,
 282                                 (StructureNotifyMask | PropertyChangeMask));
 283                 return;
 284         }
 285         if(!getclient(ev->window))
 286                 manage(ev->window, &wa);
 287 }
 288
 289 static void
 290 propertynotify(XEvent *e) {
 291         Client *c;
 292         Window trans;
 293         XPropertyEvent *ev = &e->xproperty;
 294
 295         if(ev->state == PropertyDelete)
 296                 return; /* ignore */
 297         if((c = getclient(ev->window))) {
 298                 if(ev->atom == wmatom[WMProtocols]) {
 299                         c->proto = getproto(c->win);
 300                         return;
 301                 }
 302                 switch (ev->atom) {
 303                         default: break;
 304                         case XA_WM_TRANSIENT_FOR:
 305                                 XGetTransientForHint(dpy, c->win, &trans);
 306                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 307                                         arrange(NULL);
 308                                 break;
 309                         case XA_WM_NORMAL_HINTS:
 310                                 updatesize(c);
 311                                 break;
 312                 }
 313                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 314                         updatetitle(c);
 315                         resizetitle(c);
 316                         drawtitle(c);
 317                 }
 318         }
 319 }
 320
 321 static void
 322 unmapnotify(XEvent *e) {
 323         Client *c;
 324         XUnmapEvent *ev = &e->xunmap;
 325
 326         if((c = getclient(ev->window)))
 327                 unmanage(c);
 328 }
 329
 330 /* extern */
 331
 332 void (*handler[LASTEvent]) (XEvent *) = {
 333         [ButtonPress] = buttonpress,
 334         [ConfigureRequest] = configurerequest,
 335         [DestroyNotify] = destroynotify,
 336         [EnterNotify] = enternotify,
 337         [LeaveNotify] = leavenotify,
 338         [Expose] = expose,
 339         [KeyPress] = keypress,
 340         [MappingNotify] = mappingnotify,
 341         [MapRequest] = maprequest,
 342         [PropertyNotify] = propertynotify,
 343         [UnmapNotify] = unmapnotify
 344 };
 345
 346 void
 347 grabkeys(void) {
 348         static unsigned int len = sizeof(key) / sizeof(key[0]);
 349         unsigned int i;
 350         KeyCode code;
 351
 352         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 353         for(i = 0; i < len; i++) {
 354                 code = XKeysymToKeycode(dpy, key[i].keysym);
 355                 XGrabKey(dpy, code, key[i].mod, root, True,
 356                                 GrabModeAsync, GrabModeAsync);
 357                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 358                                 GrabModeAsync, GrabModeAsync);
 359                 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
 360                                 GrabModeAsync, GrabModeAsync);
 361                 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
 362                                 GrabModeAsync, GrabModeAsync);
 363         }
 364 }
 365
 366 void
 367 procevent(void) {
 368         XEvent ev;
 369
 370         while(XPending(dpy)) {
 371                 XNextEvent(dpy, &ev);
 372                 if(handler[ev.type])
 373                         (handler[ev.type])(&ev); /* call handler */
 374         }
 375 }