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         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         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                 default: break;
  74                 case Expose:
  75                         handler[Expose](&ev);
  76                         break;
  77                 case MotionNotify:
  78                         XSync(dpy, False);
  79                         c->w = abs(ocx - ev.xmotion.x);
  80                         c->h = abs(ocy - ev.xmotion.y);
  81                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
  82                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
  83                         if(ocx <= ev.xmotion.x)
  84                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
  85                         else
  86                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
  87                         resize(c, True, sticky);
  88                         break;
  89                 case ButtonRelease:
  90                         XUngrabPointer(dpy, CurrentTime);
  91                         return;
  92                 }
  93         }
  94 }
  95
  96 static void
  97 buttonpress(XEvent *e)
  98 {
  99         int x;
 100         Arg a;
 101         Client *c;
 102         XButtonPressedEvent *ev = &e->xbutton;
 103
 104         if(barwin == ev->window) {
 105                 x = 0;
 106                 for(a.i = 0; a.i < ntags; a.i++) {
 107                         x += textw(tags[a.i]);
 108                         if(ev->x < x) {
 109                                 if(ev->button == Button3)
 110                                         toggleview(&a);
 111                                 else
 112                                         view(&a);
 113                                 return;
 114                         }
 115                 }
 116         }
 117         else if((c = getclient(ev->window))) {
 118                 higher(c);
 119                 focus(c);
 120                 switch(ev->button) {
 121                 default:
 122                         break;
 123                 case Button1:
 124                         if(!c->ismax && (arrange == dofloat || c->isfloat))
 125                                 movemouse(c);
 126                         break;
 127                 case Button2:
 128                         zoom(NULL);
 129                         break;
 130                 case Button3:
 131                         if(!c->ismax && (arrange == dofloat || c->isfloat))
 132                                 resizemouse(c);
 133                         break;
 134                 }
 135         }
 136 }
 137
 138 static void
 139 configurerequest(XEvent *e)
 140 {
 141         Client *c;
 142         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 143         XEvent synev;
 144         XWindowChanges wc;
 145         unsigned long newmask;
 146
 147         if((c = getclient(ev->window))) {
 148                 gravitate(c, True);
 149                 if(ev->value_mask & CWX)
 150                         c->x = ev->x;
 151                 if(ev->value_mask & CWY)
 152                         c->y = ev->y;
 153                 if(ev->value_mask & CWWidth)
 154                         c->w = ev->width;
 155                 if(ev->value_mask & CWHeight)
 156                         c->h = ev->height;
 157                 if(ev->value_mask & CWBorderWidth)
 158                         c->border = ev->border_width;
 159                 gravitate(c, False);
 160                 wc.x = c->x;
 161                 wc.y = c->y;
 162                 wc.width = c->w;
 163                 wc.height = c->h;
 164                 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
 165                 if(newmask)
 166                         XConfigureWindow(dpy, c->win, newmask, &wc);
 167                 else {
 168                         synev.type = ConfigureNotify;
 169                         synev.xconfigure.display = dpy;
 170                         synev.xconfigure.event = c->win;
 171                         synev.xconfigure.window = c->win;
 172                         synev.xconfigure.x = c->x;
 173                         synev.xconfigure.y = c->y;
 174                         synev.xconfigure.width = c->w;
 175                         synev.xconfigure.height = c->h;
 176                         synev.xconfigure.border_width = c->border;
 177                         synev.xconfigure.above = None;
 178                         /* Send synthetic ConfigureNotify */
 179                         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
 180                 }
 181                 XSync(dpy, False);
 182                 if(c->isfloat)
 183                         resize(c, False, TopLeft);
 184                 else
 185                         arrange(NULL);
 186         }
 187         else {
 188                 wc.x = ev->x;
 189                 wc.y = ev->y;
 190                 wc.width = ev->width;
 191                 wc.height = ev->height;
 192                 wc.border_width = ev->border_width;
 193                 wc.sibling = ev->above;
 194                 wc.stack_mode = ev->detail;
 195                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 196                 XSync(dpy, False);
 197         }
 198 }
 199
 200 static void
 201 destroynotify(XEvent *e)
 202 {
 203         Client *c;
 204         XDestroyWindowEvent *ev = &e->xdestroywindow;
 205
 206         if((c = getclient(ev->window)))
 207                 unmanage(c);
 208 }
 209
 210 static void
 211 enternotify(XEvent *e)
 212 {
 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)))
 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 {
 231         Client *c;
 232         XExposeEvent *ev = &e->xexpose;
 233
 234         if(ev->count == 0) {
 235                 if(barwin == ev->window)
 236                         drawstatus();
 237                 else if((c = getctitle(ev->window)))
 238                         drawtitle(c);
 239         }
 240 }
 241
 242 static void
 243 keypress(XEvent *e)
 244 {
 245         static unsigned int len = sizeof(key) / sizeof(key[0]);
 246         unsigned int i;
 247         KeySym keysym;
 248         XKeyEvent *ev = &e->xkey;
 249
 250         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 251         for(i = 0; i < len; i++)
 252                 if(keysym == key[i].keysym &&
 253                                 CLEANMASK(key[i].mod) == CLEANMASK(ev->state)) {
 254                         if(key[i].func)
 255                                 key[i].func(&key[i].arg);
 256                         return;
 257                 }
 258 }
 259
 260 static void
 261 leavenotify(XEvent *e)
 262 {
 263         XCrossingEvent *ev = &e->xcrossing;
 264
 265         if((ev->window == root) && !ev->same_screen) {
 266                 issel = False;
 267                 drawall();
 268         }
 269 }
 270
 271 static void
 272 maprequest(XEvent *e)
 273 {
 274         static XWindowAttributes wa;
 275         XMapRequestEvent *ev = &e->xmaprequest;
 276
 277         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 278                 return;
 279
 280         if(wa.override_redirect) {
 281                 XSelectInput(dpy, ev->window,
 282                                 (StructureNotifyMask | PropertyChangeMask));
 283                 return;
 284         }
 285
 286         if(!getclient(ev->window))
 287                 manage(ev->window, &wa);
 288 }
 289
 290 static void
 291 propertynotify(XEvent *e)
 292 {
 293         Client *c;
 294         Window trans;
 295         XPropertyEvent *ev = &e->xproperty;
 296
 297         if(ev->state == PropertyDelete)
 298                 return; /* ignore */
 299
 300         if((c = getclient(ev->window))) {
 301                 if(ev->atom == wmatom[WMProtocols]) {
 302                         c->proto = getproto(c->win);
 303                         return;
 304                 }
 305                 switch (ev->atom) {
 306                         default: break;
 307                         case XA_WM_TRANSIENT_FOR:
 308                                 XGetTransientForHint(dpy, c->win, &trans);
 309                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 310                                         arrange(NULL);
 311                                 break;
 312                         case XA_WM_NORMAL_HINTS:
 313                                 setsize(c);
 314                                 break;
 315                 }
 316                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 317                         settitle(c);
 318                         drawtitle(c);
 319                 }
 320         }
 321 }
 322
 323 static void
 324 unmapnotify(XEvent *e)
 325 {
 326         Client *c;
 327         XUnmapEvent *ev = &e->xunmap;
 328
 329         if((c = getclient(ev->window)))
 330                 unmanage(c);
 331 }
 332
 333 /* extern */
 334
 335 void (*handler[LASTEvent]) (XEvent *) = {
 336         [ButtonPress] = buttonpress,
 337         [ConfigureRequest] = configurerequest,
 338         [DestroyNotify] = destroynotify,
 339         [EnterNotify] = enternotify,
 340         [LeaveNotify] = leavenotify,
 341         [Expose] = expose,
 342         [KeyPress] = keypress,
 343         [MapRequest] = maprequest,
 344         [PropertyNotify] = propertynotify,
 345         [UnmapNotify] = unmapnotify
 346 };
 347
 348 void
 349 grabkeys()
 350 {
 351         static unsigned int len = sizeof(key) / sizeof(key[0]);
 352         unsigned int i;
 353         KeyCode code;
 354
 355         for(i = 0; i < len; i++) {
 356                 code = XKeysymToKeycode(dpy, key[i].keysym);
 357                 XGrabKey(dpy, code, key[i].mod, root, True,
 358                                 GrabModeAsync, GrabModeAsync);
 359                 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
 360                                 GrabModeAsync, GrabModeAsync);
 361                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root, True,
 362                                 GrabModeAsync, GrabModeAsync);
 363                 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root, True,
 364                                 GrabModeAsync, GrabModeAsync);
 365         }
 366 }