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