focus.c

   1 /*
   2  * focus.c - focus 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 "focus.h"
  23 #include "cnode.h"
  24 #include "tag.h"
  25
  26 extern awesome_t globalconf;
  27
  28 /** Push the client at the beginning of the client focus history stack.
  29  * \param c The client to push.
  30  */
  31 void
  32 focus_client_push(client_t *c)
  33 {
  34     client_node_t *node = client_node_client_add(&globalconf.focus, c);
  35     client_node_list_push(&globalconf.focus, node);
  36 }
  37
  38 /** Append the client at the end of the client focus history stack.
  39  * \param c The client to append.
  40  */
  41 void
  42 focus_client_append(client_t *c)
  43 {
  44     client_node_t *node = client_node_client_add(&globalconf.focus, c);
  45     client_node_list_append(&globalconf.focus, node);
  46 }
  47
  48 /** Remove a client from focus history.
  49  * \param c The client.
  50  */
  51 void
  52 focus_client_delete(client_t *c)
  53 {
  54     client_node_t *node = client_node_client_getby(globalconf.focus, c);
  55
  56     if(node)
  57     {
  58         client_node_list_detach(&globalconf.focus, node);
  59         p_delete(&node);
  60     }
  61 }
  62
  63 static client_t *
  64 focus_get_latest_client_for_tags(tag_t **t, int nindex)
  65 {
  66     client_node_t *node;
  67     tag_t **tags;
  68     int i = 0;
  69
  70     for(node = globalconf.focus; node; node = node->next)
  71         if(node->client && !node->client->skip && !node->client->ishidden)
  72             for(tags = t; *tags; tags++)
  73                 if(is_client_tagged(node->client, *tags))
  74                     if(i-- == nindex)
  75                         return node->client;
  76     return NULL;
  77 }
  78
  79 /** Get the latest focused client on a screen.
  80  * \param screen The virtual screen number.
  81  * \return A pointer to an existing client.
  82  */
  83 client_t *
  84 focus_get_current_client(int screen)
  85 {
  86     tag_t **curtags = tags_get_current(screen);
  87     client_t *sel = focus_get_latest_client_for_tags(curtags, 0);
  88     p_delete(&curtags);
  89
  90     return sel;
  91 }
  92
  93 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80