Dogcows Code - chaz/openbox/blob - openbox/event.c

   1 #include "openbox.h"
   2 #include "client.h"
   3 #include "xerror.h"
   4 #include "prop.h"
   5 #include "screen.h"
   6 #include "frame.h"
   7 #include "engine.h"
   8 #include "focus.h"
   9 #include "stacking.h"
  10 #include "extensions.h"
  11 #include "timer.h"
  12 #include "engine.h"
  13 #include "dispatch.h"
  14
  15 #include <X11/Xlib.h>
  16 #include <X11/keysym.h>
  17 #include <X11/Xatom.h>
  18 #ifdef HAVE_SYS_SELECT_H
  19 #  include <sys/select.h>
  20 #endif
  21
  22 static void event_process(XEvent *e);
  23 static void event_handle_root(XEvent *e);
  24 static void event_handle_client(Client *c, XEvent *e);
  25
  26 Time event_lasttime = 0;
  27
  28 /*! The value of the mask for the NumLock modifier */
  29 unsigned int NumLockMask;
  30 /*! The value of the mask for the ScrollLock modifier */
  31 unsigned int ScrollLockMask;
  32 /*! The key codes for the modifier keys */
  33 static XModifierKeymap *modmap;
  34 /*! Table of the constant modifier masks */
  35 static const int mask_table[] = {
  36     ShiftMask, LockMask, ControlMask, Mod1Mask,
  37     Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
  38 };
  39 static int mask_table_size;
  40
  41 void event_startup()
  42 {
  43     mask_table_size = sizeof(mask_table) / sizeof(mask_table[0]);
  44
  45     /* get lock masks that are defined by the display (not constant) */
  46     modmap = XGetModifierMapping(ob_display);
  47     g_assert(modmap);
  48     if (modmap && modmap->max_keypermod > 0) {
  49         size_t cnt;
  50         const size_t size = mask_table_size * modmap->max_keypermod;
  51         /* get the values of the keyboard lock modifiers
  52            Note: Caps lock is not retrieved the same way as Scroll and Num
  53            lock since it doesn't need to be. */
  54         const KeyCode num_lock = XKeysymToKeycode(ob_display, XK_Num_Lock);
  55         const KeyCode scroll_lock = XKeysymToKeycode(ob_display,
  56                                                      XK_Scroll_Lock);
  57
  58         for (cnt = 0; cnt < size; ++cnt) {
  59             if (! modmap->modifiermap[cnt]) continue;
  60
  61             if (num_lock == modmap->modifiermap[cnt])
  62                 NumLockMask = mask_table[cnt / modmap->max_keypermod];
  63             if (scroll_lock == modmap->modifiermap[cnt])
  64                 ScrollLockMask = mask_table[cnt / modmap->max_keypermod];
  65         }
  66     }
  67 }
  68
  69 void event_shutdown()
  70 {
  71     XFreeModifiermap(modmap);
  72 }
  73
  74 void event_loop()
  75 {
  76     fd_set selset;
  77     XEvent e;
  78     int x_fd;
  79     struct timeval *wait;
  80
  81     while (TRUE) {
  82         /*
  83           There are slightly different event retrieval semantics here for
  84           local (or high bandwidth) versus remote (or low bandwidth)
  85           connections to the display/Xserver.
  86         */
  87         if (ob_remote) {
  88             if (!XPending(ob_display))
  89                 break;
  90         } else {
  91             /*
  92               This XSync allows for far more compression of events, which
  93               makes things like Motion events perform far far better. Since
  94               it also means network traffic for every event instead of every
  95               X events (where X is the number retrieved at a time), it
  96               probably should not be used for setups where Openbox is
  97               running on a remote/low bandwidth display/Xserver.
  98             */
  99             XSync(ob_display, FALSE);
 100             if (!XEventsQueued(ob_display, QueuedAlready))
 101                 break;
 102         }
 103         XNextEvent(ob_display, &e);
 104
 105         event_process(&e);
 106     }
 107
 108     timer_dispatch((GTimeVal**)&wait);
 109     x_fd = ConnectionNumber(ob_display);
 110     FD_ZERO(&selset);
 111     FD_SET(x_fd, &selset);
 112     select(x_fd + 1, &selset, NULL, NULL, wait);
 113 }
 114
 115 void event_process(XEvent *e)
 116 {
 117     XEvent ce;
 118     KeyCode *kp;
 119     Window window;
 120     int i, k;
 121     Client *client;
 122
 123     /* pick a window */
 124     switch (e->type) {
 125     case MapRequest:
 126         window = e->xmap.window;
 127         break;
 128     case UnmapNotify:
 129         window = e->xunmap.window;
 130         break;
 131     case DestroyNotify:
 132         window = e->xdestroywindow.window;
 133         break;
 134     case ConfigureRequest:
 135         window = e->xconfigurerequest.window;
 136         break;
 137     default:
 138         /* XKB events */
 139         if (e->type == extensions_xkb_event_basep) {
 140             switch (((XkbAnyEvent*)&e)->xkb_type) {
 141             case XkbBellNotify:
 142                 window = ((XkbBellNotifyEvent*)&e)->window;
 143             default:
 144                 window = None;
 145             }
 146         } else
 147             window = e->xany.window;
 148     }
 149
 150     /* grab the lasttime and hack up the state */
 151     switch (e->type) {
 152     case ButtonPress:
 153     case ButtonRelease:
 154         event_lasttime = e->xbutton.time;
 155         e->xbutton.state &= ~(LockMask | NumLockMask | ScrollLockMask);
 156         /* kill off the Button1Mask etc, only want the modifiers */
 157         e->xbutton.state &= (ControlMask | ShiftMask | Mod1Mask |
 158                              Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask);
 159         break;
 160     case KeyPress:
 161         event_lasttime = e->xkey.time;
 162         e->xkey.state &= ~(LockMask | NumLockMask | ScrollLockMask);
 163         /* kill off the Button1Mask etc, only want the modifiers */
 164         e->xkey.state &= (ControlMask | ShiftMask | Mod1Mask |
 165                           Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask);
 166         /* add to the state the mask of the modifier being pressed, if it is
 167            a modifier key being pressed (this is a little ugly..) */
 168 /* I'm commenting this out cuz i don't want "C-Control_L" being returned. */
 169 /*      kp = modmap->modifiermap;*/
 170 /*      for (i = 0; i < mask_table_size; ++i) {*/
 171 /*          for (k = 0; k < modmap->max_keypermod; ++k) {*/
 172 /*              if (*kp == e->xkey.keycode) {*/ /* found the keycode */
 173                     /* add the mask for it */
 174 /*                  e->xkey.state |= mask_table[i];*/
 175                     /* cause the first loop to break; */
 176 /*                  i = mask_table_size;*/
 177 /*                  break;*/ /* get outta here! */
 178 /*              }*/
 179 /*              ++kp;*/
 180 /*          }*/
 181 /*      }*/
 182
 183         break;
 184     case KeyRelease:
 185         event_lasttime = e->xkey.time;
 186         e->xkey.state &= ~(LockMask | NumLockMask | ScrollLockMask);
 187         /* kill off the Button1Mask etc, only want the modifiers */
 188         e->xkey.state &= (ControlMask | ShiftMask | Mod1Mask |
 189                           Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask);
 190         /* remove from the state the mask of the modifier being released, if
 191            it is a modifier key being released (this is a little ugly..) */
 192         kp = modmap->modifiermap;
 193         for (i = 0; i < mask_table_size; ++i) {
 194             for (k = 0; k < modmap->max_keypermod; ++k) {
 195                 if (*kp == e->xkey.keycode) { /* found the keycode */
 196                     /* remove the mask for it */
 197                     e->xkey.state &= ~mask_table[i];
 198                     /* cause the first loop to break; */
 199                     i = mask_table_size;
 200                     break; /* get outta here! */
 201                 }
 202                 ++kp;
 203             }
 204         }
 205         break;
 206     case MotionNotify:
 207         event_lasttime = e->xmotion.time;
 208         e->xmotion.state &= ~(LockMask | NumLockMask | ScrollLockMask);
 209         /* kill off the Button1Mask etc, only want the modifiers */
 210         e->xmotion.state &= (ControlMask | ShiftMask | Mod1Mask |
 211                              Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask);
 212         /* compress events */
 213         while (XCheckTypedWindowEvent(ob_display, window, e->type, &ce)) {
 214             e->xmotion.x_root = ce.xmotion.x_root;
 215             e->xmotion.y_root = ce.xmotion.y_root;
 216         }
 217         break;
 218     case PropertyNotify:
 219         event_lasttime = e->xproperty.time;
 220         break;
 221     case FocusIn:
 222     case FocusOut:
 223         if (e->xfocus.mode == NotifyGrab)
 224             /*|| e.xfocus.mode == NotifyUngrab ||*/
 225
 226             /* From Metacity, from WindowMaker, ignore all funky pointer
 227                root events. Its commented out cuz I don't think we need this
 228                at all. If problems arise we can look into it */
 229             /*e.xfocus.detail > NotifyNonlinearVirtual) */
 230             return; /* skip me! */
 231         if (e->type == FocusOut) {
 232             /* FocusOut events just make us look for FocusIn events. They
 233                are mostly ignored otherwise. */
 234             XEvent fi;
 235             if (XCheckTypedEvent(ob_display, FocusIn, &fi)) {
 236                 event_process(&fi);
 237                 /* dont unfocus the window we just focused! */
 238                 if (fi.xfocus.window == e->xfocus.window)
 239                     return;
 240             }
 241         }
 242         break;
 243     case EnterNotify:
 244     case LeaveNotify:
 245         event_lasttime = e->xcrossing.time;
 246         /* XXX this caused problems before... but i don't remember why. hah.
 247            so back it is. if problems arise again, then try filtering on the
 248            detail instead of the mode. */
 249         if (e->xcrossing.mode != NotifyNormal) return;
 250         break;
 251     }
 252
 253     client = g_hash_table_lookup(client_map, (gpointer)window);
 254
 255     /* deal with it in the kernel */
 256     if (client)
 257         event_handle_client(client, e);
 258     else if (window == ob_root)
 259         event_handle_root(e);
 260     else if (e->type == MapRequest)
 261         client_manage(window);
 262     else if (e->type == ConfigureRequest) {
 263         /* unhandled configure requests must be used to configure the
 264            window directly */
 265         XWindowChanges xwc;
 266
 267         xwc.x = e->xconfigurerequest.x;
 268         xwc.y = e->xconfigurerequest.y;
 269         xwc.width = e->xconfigurerequest.width;
 270         xwc.height = e->xconfigurerequest.height;
 271         xwc.border_width = e->xconfigurerequest.border_width;
 272         xwc.sibling = e->xconfigurerequest.above;
 273         xwc.stack_mode = e->xconfigurerequest.detail;
 274
 275         g_message("Proxying configure event for 0x%lx", window);
 276
 277         /* we are not to be held responsible if someone sends us an
 278            invalid request! */
 279         xerror_set_ignore(TRUE);
 280         XConfigureWindow(ob_display, window,
 281                          e->xconfigurerequest.value_mask, &xwc);
 282         xerror_set_ignore(FALSE);
 283     }
 284
 285     /* dispatch the event to registered handlers */
 286     dispatch_x(e, client);
 287 }
 288
 289 static void event_handle_root(XEvent *e)
 290 {
 291     Atom msgtype;
 292
 293     switch(e->type) {
 294     case ClientMessage:
 295         if (e->xclient.format != 32) break;
 296
 297         msgtype = e->xclient.message_type;
 298         if (msgtype == prop_atoms.net_current_desktop) {
 299             unsigned int d = e->xclient.data.l[0];
 300             if (d <= screen_num_desktops)
 301                 screen_set_desktop(d);
 302         } else if (msgtype == prop_atoms.net_number_of_desktops) {
 303             unsigned int d = e->xclient.data.l[0];
 304             if (d > 0)
 305                 screen_set_num_desktops(d);
 306         } else if (msgtype == prop_atoms.net_showing_desktop) {
 307             screen_show_desktop(e->xclient.data.l[0] != 0);
 308         }
 309         break;
 310     case PropertyNotify:
 311         if (e->xproperty.atom == prop_atoms.net_desktop_names)
 312             screen_update_desktop_names();
 313         else if (e->xproperty.atom == prop_atoms.net_desktop_layout)
 314             screen_update_layout();
 315         break;
 316     }
 317 }
 318
 319 static void event_handle_client(Client *client, XEvent *e)
 320 {
 321     XEvent ce;
 322     Atom msgtype;
 323
 324     switch (e->type) {
 325     case FocusIn:
 326         client_set_focused(client, TRUE);
 327         break;
 328     case FocusOut:
 329         client_set_focused(client, FALSE);
 330         break;
 331     case ConfigureRequest:
 332         g_message("ConfigureRequest for window %lx", client->window);
 333         /* compress these */
 334         while (XCheckTypedWindowEvent(ob_display, client->window,
 335                                       ConfigureRequest, &ce)) {
 336             /* XXX if this causes bad things.. we can compress config req's
 337                with the same mask. */
 338             e->xconfigurerequest.value_mask |=
 339                 ce.xconfigurerequest.value_mask;
 340             if (ce.xconfigurerequest.value_mask & CWX)
 341                 e->xconfigurerequest.x = ce.xconfigurerequest.x;
 342             if (ce.xconfigurerequest.value_mask & CWY)
 343                 e->xconfigurerequest.y = ce.xconfigurerequest.y;
 344             if (ce.xconfigurerequest.value_mask & CWWidth)
 345                 e->xconfigurerequest.width = ce.xconfigurerequest.width;
 346             if (ce.xconfigurerequest.value_mask & CWHeight)
 347                 e->xconfigurerequest.height = ce.xconfigurerequest.height;
 348             if (ce.xconfigurerequest.value_mask & CWBorderWidth)
 349                 e->xconfigurerequest.border_width =
 350                     ce.xconfigurerequest.border_width;
 351             if (ce.xconfigurerequest.value_mask & CWStackMode)
 352                 e->xconfigurerequest.detail = ce.xconfigurerequest.detail;
 353         }
 354
 355         /* if we are iconic (or shaded (fvwm does this)) ignore the event */
 356         if (client->iconic || client->shaded) return;
 357
 358         if (e->xconfigurerequest.value_mask & CWBorderWidth)
 359             client->border_width = e->xconfigurerequest.border_width;
 360
 361         /* resize, then move, as specified in the EWMH section 7.7 */
 362         if (e->xconfigurerequest.value_mask & (CWWidth | CWHeight |
 363                                                CWX | CWY)) {
 364             int x, y, w, h;
 365             Corner corner;
 366
 367             x = (e->xconfigurerequest.value_mask & CWX) ?
 368                 e->xconfigurerequest.x : client->area.x;
 369             y = (e->xconfigurerequest.value_mask & CWY) ?
 370                 e->xconfigurerequest.y : client->area.y;
 371             w = (e->xconfigurerequest.value_mask & CWWidth) ?
 372                 e->xconfigurerequest.width : client->area.width;
 373             h = (e->xconfigurerequest.value_mask & CWHeight) ?
 374                 e->xconfigurerequest.height : client->area.height;
 375
 376             switch (client->gravity) {
 377             case NorthEastGravity:
 378             case EastGravity:
 379                 corner = Corner_TopRight;
 380                 break;
 381             case SouthWestGravity:
 382             case SouthGravity:
 383                 corner = Corner_BottomLeft;
 384                 break;
 385             case SouthEastGravity:
 386                 corner = Corner_BottomRight;
 387                 break;
 388             default:     /* NorthWest, Static, etc */
 389                 corner = Corner_TopLeft;
 390             }
 391
 392             client_configure(client, corner, x, y, w, h, FALSE, FALSE);
 393         }
 394
 395         if (e->xconfigurerequest.value_mask & CWStackMode) {
 396             switch (e->xconfigurerequest.detail) {
 397             case Below:
 398             case BottomIf:
 399                 stacking_lower(client);
 400                 break;
 401
 402             case Above:
 403             case TopIf:
 404             default:
 405                 stacking_raise(client);
 406                 break;
 407             }
 408         }
 409         break;
 410     case UnmapNotify:
 411         if (client->ignore_unmaps) {
 412             client->ignore_unmaps--;
 413             break;
 414         }
 415         g_message("UnmapNotify for %lx", client->window);
 416         client_unmanage(client);
 417         break;
 418     case DestroyNotify:
 419         g_message("DestroyNotify for %lx", client->window);
 420         client_unmanage(client);
 421         break;
 422     case ReparentNotify:
 423         /* this is when the client is first taken captive in the frame */
 424         if (e->xreparent.parent == client->frame->plate) break;
 425
 426         /*
 427           This event is quite rare and is usually handled in unmapHandler.
 428           However, if the window is unmapped when the reparent event occurs,
 429           the window manager never sees it because an unmap event is not sent
 430           to an already unmapped window.
 431         */
 432
 433         /* we don't want the reparent event, put it back on the stack for the
 434            X server to deal with after we unmanage the window */
 435         XPutBackEvent(ob_display, e);
 436
 437         client_unmanage(client);
 438         break;
 439     case MapRequest:
 440         if (screen_showing_desktop)
 441             screen_show_desktop(FALSE);
 442         client_iconify(client, FALSE, TRUE);
 443         if (!client->frame->visible)
 444             /* if its not visible still, then don't mess with it */
 445             break;
 446         if (client->shaded)
 447             client_shade(client, FALSE);
 448         client_focus(client);
 449         stacking_raise(client);
 450         break;
 451     case ClientMessage:
 452         /* validate cuz we query stuff off the client here */
 453         if (!client_validate(client)) break;
 454
 455         if (e->xclient.format != 32) return;
 456
 457         msgtype = e->xclient.message_type;
 458         if (msgtype == prop_atoms.wm_change_state) {
 459             /* compress changes into a single change */
 460             while (XCheckTypedWindowEvent(ob_display, e->type,
 461                                           client->window, &ce)) {
 462                 /* XXX: it would be nice to compress ALL messages of a
 463                    type, not just messages in a row without other
 464                    message types between. */
 465                 if (ce.xclient.message_type != msgtype) {
 466                     XPutBackEvent(ob_display, &ce);
 467                     break;
 468                 }
 469                 e->xclient = ce.xclient;
 470             }
 471             client_set_wm_state(client, e->xclient.data.l[0]);
 472         } else if (msgtype == prop_atoms.net_wm_desktop) {
 473             /* compress changes into a single change */
 474             while (XCheckTypedWindowEvent(ob_display, e->type,
 475                                           client->window, &ce)) {
 476                 /* XXX: it would be nice to compress ALL messages of a
 477                    type, not just messages in a row without other
 478                    message types between. */
 479                 if (ce.xclient.message_type != msgtype) {
 480                     XPutBackEvent(ob_display, &ce);
 481                     break;
 482                 }
 483                 e->xclient = ce.xclient;
 484             }
 485             client_set_desktop(client, e->xclient.data.l[0]);
 486         } else if (msgtype == prop_atoms.net_wm_state) {
 487             /* can't compress these */
 488             g_message("net_wm_state %s %ld %ld for 0x%lx\n",
 489                       (e->xclient.data.l[0] == 0 ? "Remove" :
 490                        e->xclient.data.l[0] == 1 ? "Add" :
 491                        e->xclient.data.l[0] == 2 ? "Toggle" : "INVALID"),
 492                       e->xclient.data.l[1], e->xclient.data.l[2],
 493                       client->window);
 494             client_set_state(client, e->xclient.data.l[0],
 495                              e->xclient.data.l[1], e->xclient.data.l[2]);
 496         } else if (msgtype == prop_atoms.net_close_window) {
 497             g_message("net_close_window for 0x%lx\n", client->window);
 498             client_close(client);
 499         } else if (msgtype == prop_atoms.net_active_window) {
 500             g_message("net_active_window for 0x%lx\n", client->window);
 501             if (screen_showing_desktop)
 502                 screen_show_desktop(FALSE);
 503             if (client->iconic)
 504                 client_iconify(client, FALSE, TRUE);
 505             else if (!client->frame->visible)
 506                 /* if its not visible for other reasons, then don't mess
 507                    with it */
 508                 break;
 509             if (client->shaded)
 510                 client_shade(client, FALSE);
 511             client_focus(client);
 512             stacking_raise(client);
 513         }
 514         break;
 515     case PropertyNotify:
 516         /* validate cuz we query stuff off the client here */
 517         if (!client_validate(client)) break;
 518
 519         /* compress changes to a single property into a single change */
 520         while (XCheckTypedWindowEvent(ob_display, e->type,
 521                                       client->window, &ce)) {
 522             /* XXX: it would be nice to compress ALL changes to a property,
 523                not just changes in a row without other props between. */
 524             if (ce.xproperty.atom != e->xproperty.atom) {
 525                 XPutBackEvent(ob_display, &ce);
 526                 break;
 527             }
 528         }
 529
 530         msgtype = e->xproperty.atom;
 531         if (msgtype == XA_WM_NORMAL_HINTS) {
 532             client_update_normal_hints(client);
 533             /* normal hints can make a window non-resizable */
 534             client_setup_decor_and_functions(client);
 535         }
 536         else if (msgtype == XA_WM_HINTS)
 537             client_update_wmhints(client);
 538         else if (msgtype == XA_WM_TRANSIENT_FOR) {
 539             client_update_transient_for(client);
 540             client_get_type(client);
 541             /* type may have changed, so update the layer */
 542             client_calc_layer(client);
 543             client_setup_decor_and_functions(client);
 544         }
 545         else if (msgtype == prop_atoms.net_wm_name ||
 546                  msgtype == prop_atoms.wm_name)
 547             client_update_title(client);
 548         else if (msgtype == prop_atoms.net_wm_icon_name ||
 549                  msgtype == prop_atoms.wm_icon_name)
 550             client_update_icon_title(client);
 551         else if (msgtype == prop_atoms.wm_class)
 552             client_update_class(client);
 553         else if (msgtype == prop_atoms.wm_protocols) {
 554             client_update_protocols(client);
 555             client_setup_decor_and_functions(client);
 556         }
 557         else if (msgtype == prop_atoms.net_wm_strut)
 558             client_update_strut(client);
 559         else if (msgtype == prop_atoms.net_wm_icon)
 560             client_update_icons(client);
 561         else if (msgtype == prop_atoms.kwm_win_icon)
 562             client_update_kwm_icon(client);
 563     }
 564 }