layout.c

   1 /*
   2  * layout.c - layout management
   3  *
   4  * Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include "layout.h"
  23 #include "tag.h"
  24 #include "window.h"
  25 #include "screen.h"
  26 #include "titlebar.h"
  27
  28 /** Arrange windows following current selected layout.
  29  * \param screen The screen to arrange.
  30  */
  31 static void
  32 arrange(screen_t *screen)
  33 {
  34     uint32_t select_input_val[] = { CLIENT_SELECT_INPUT_EVENT_MASK & ~(XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_LEAVE_WINDOW) };
  35
  36     foreach(_c, globalconf.clients)
  37     {
  38         client_t *c = *_c;
  39         /* Bob Marley v2:
  40          * While we arrange, we do not want to receive EnterNotify or LeaveNotify
  41          * events, or we would get spurious events. */
  42         xcb_change_window_attributes(globalconf.connection,
  43                                      c->win,
  44                                      XCB_CW_EVENT_MASK,
  45                                      select_input_val);
  46
  47         /* Restore titlebar before client, so geometry is ok again. */
  48         if(titlebar_isvisible(c, screen))
  49             titlebar_unban(c->titlebar);
  50
  51         if(client_isvisible(c, screen))
  52             client_unban(c);
  53     }
  54
  55     /* Some people disliked the short flicker of background, so we first unban everything.
  56      * Afterwards we ban everything we don't want. This should avoid that. */
  57     foreach(_c, globalconf.clients)
  58     {
  59         client_t *c = *_c;
  60
  61         if(!titlebar_isvisible(c, screen) && c->screen == screen)
  62             titlebar_ban(c->titlebar);
  63
  64         /* we don't touch other screens windows */
  65         if(!client_isvisible(c, screen) && c->screen == screen)
  66             client_ban(c);
  67     }
  68
  69     client_update_strut_positions(screen);
  70
  71     /* Reset status before calling arrange hook.
  72      * This is needed if you call a function that relies
  73      * on need_arrange while arrange is in progress.
  74      */
  75     screen->need_arrange = false;
  76
  77     /* call hook */
  78     if(globalconf.hooks.arrange != LUA_REFNIL)
  79     {
  80         lua_pushnumber(globalconf.L, screen_array_indexof(&globalconf.screens, screen) + 1);
  81         luaA_dofunction(globalconf.L, globalconf.hooks.arrange, 1, 0);
  82     }
  83
  84     /* Now, we want to receive EnterNotify and LeaveNotify events back. */
  85     select_input_val[0] = CLIENT_SELECT_INPUT_EVENT_MASK;
  86     foreach(c, globalconf.clients)
  87         xcb_change_window_attributes(globalconf.connection,
  88                                      (*c)->win,
  89                                      XCB_CW_EVENT_MASK,
  90                                      select_input_val);
  91 }
  92
  93 /** Refresh the screen disposition
  94  * \return true if the screen was arranged, false otherwise
  95  */
  96 void
  97 layout_refresh(void)
  98 {
  99     foreach(screen, globalconf.screens)
 100         if(screen->need_arrange)
 101             arrange(screen);
 102 }
 103
 104 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80