systray.c

   1 /*
   2  * systray.c - systray handling
   3  *
   4  * Copyright © 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 <xcb/xcb.h>
  23 #include <xcb/xcb_icccm.h>
  24 #include <xcb/xcb_atom.h>
  25
  26 #include "screen.h"
  27 #include "systray.h"
  28 #include "window.h"
  29 #include "widget.h"
  30 #include "common/atoms.h"
  31 #include "common/xutil.h"
  32
  33 #define SYSTEM_TRAY_REQUEST_DOCK 0 /* Begin icon docking */
  34
  35 /** Initialize systray information in X.
  36  * \param phys_screen Physical screen.
  37  */
  38 void
  39 systray_init(int phys_screen)
  40 {
  41     xcb_client_message_event_t ev;
  42     xcb_screen_t *xscreen = xutil_screen_get(globalconf.connection, phys_screen);
  43     char *atom_name;
  44     xcb_intern_atom_cookie_t atom_systray_q;
  45     xcb_intern_atom_reply_t *atom_systray_r;
  46     xcb_atom_t atom_systray;
  47
  48     /* Send requests */
  49     if(!(atom_name = xcb_atom_name_by_screen("_NET_SYSTEM_TRAY", phys_screen)))
  50     {
  51         warn("error getting systray atom");
  52         return;
  53     }
  54
  55     atom_systray_q = xcb_intern_atom_unchecked(globalconf.connection, false,
  56                                                a_strlen(atom_name), atom_name);
  57
  58     p_delete(&atom_name);
  59
  60     globalconf.screens.tab[phys_screen].systray.window = xcb_generate_id(globalconf.connection);
  61     xcb_create_window(globalconf.connection, xscreen->root_depth,
  62                       globalconf.screens.tab[phys_screen].systray.window,
  63                       xscreen->root,
  64                       -1, -1, 1, 1, 0,
  65                       XCB_COPY_FROM_PARENT, xscreen->root_visual, 0, NULL);
  66
  67     /* Fill event */
  68     p_clear(&ev, 1);
  69     ev.response_type = XCB_CLIENT_MESSAGE;
  70     ev.window = xscreen->root;
  71     ev.format = 32;
  72     ev.type = MANAGER;
  73     ev.data.data32[0] = XCB_CURRENT_TIME;
  74     ev.data.data32[2] = globalconf.screens.tab[phys_screen].systray.window;
  75     ev.data.data32[3] = ev.data.data32[4] = 0;
  76
  77     if(!(atom_systray_r = xcb_intern_atom_reply(globalconf.connection, atom_systray_q, NULL)))
  78     {
  79         warn("error getting systray atom");
  80         return;
  81     }
  82
  83     ev.data.data32[1] = atom_systray = atom_systray_r->atom;
  84
  85     p_delete(&atom_systray_r);
  86
  87     xcb_set_selection_owner(globalconf.connection,
  88                             globalconf.screens.tab[phys_screen].systray.window,
  89                             atom_systray,
  90                             XCB_CURRENT_TIME);
  91
  92     xcb_send_event(globalconf.connection, false, xscreen->root, 0xFFFFFF, (char *) &ev);
  93 }
  94
  95 /** Remove systray information in X.
  96  * \param phys_screen Physical screen.
  97  */
  98 void
  99 systray_cleanup(int phys_screen)
 100 {
 101     xcb_intern_atom_reply_t *atom_systray_r;
 102     char *atom_name;
 103
 104     if(!(atom_name = xcb_atom_name_by_screen("_NET_SYSTEM_TRAY", phys_screen))
 105        || !(atom_systray_r = xcb_intern_atom_reply(globalconf.connection,
 106                                                    xcb_intern_atom_unchecked(globalconf.connection,
 107                                                                              false,
 108                                                                              a_strlen(atom_name),
 109                                                                              atom_name),
 110                                                    NULL)))
 111     {
 112         warn("error getting systray atom");
 113         p_delete(&atom_name);
 114         return;
 115     }
 116
 117     p_delete(&atom_name);
 118
 119     xcb_set_selection_owner(globalconf.connection,
 120                             XCB_NONE,
 121                             atom_systray_r->atom,
 122                             XCB_CURRENT_TIME);
 123
 124     p_delete(&atom_systray_r);
 125 }
 126
 127 /** Handle a systray request.
 128  * \param embed_win The window to embed.
 129  * \param phys_screen The physical monitor to display on.
 130  * \param info The embedding info
 131  * \return 0 on no error.
 132  */
 133 int
 134 systray_request_handle(xcb_window_t embed_win, int phys_screen, xembed_info_t *info)
 135 {
 136     xembed_window_t em;
 137     xcb_get_property_cookie_t em_cookie;
 138     const uint32_t select_input_val[] =
 139     {
 140         XCB_EVENT_MASK_STRUCTURE_NOTIFY
 141             | XCB_EVENT_MASK_PROPERTY_CHANGE
 142             | XCB_EVENT_MASK_ENTER_WINDOW
 143     };
 144
 145     /* check if not already trayed */
 146     if(xembed_getbywin(&globalconf.embedded, embed_win))
 147         return -1;
 148
 149     p_clear(&em_cookie, 1);
 150
 151     if(!info)
 152         em_cookie = xembed_info_get_unchecked(globalconf.connection, embed_win);
 153
 154     xcb_change_window_attributes(globalconf.connection, embed_win, XCB_CW_EVENT_MASK,
 155                                  select_input_val);
 156     window_state_set(embed_win, XCB_WM_STATE_WITHDRAWN);
 157
 158     xcb_reparent_window(globalconf.connection, embed_win,
 159                         globalconf.screens.tab[phys_screen].systray.window,
 160                         0, 0);
 161
 162     em.win = embed_win;
 163     em.phys_screen = phys_screen;
 164
 165     if(info)
 166         em.info = *info;
 167     else
 168         xembed_info_get_reply(globalconf.connection, em_cookie, &em.info);
 169
 170     xembed_embedded_notify(globalconf.connection, em.win,
 171                            globalconf.screens.tab[phys_screen].systray.window,
 172                            MIN(XEMBED_VERSION, em.info.version));
 173
 174     xembed_window_array_append(&globalconf.embedded, em);
 175
 176     widget_invalidate_bytype(widget_systray);
 177
 178     return 0;
 179 }
 180
 181 /** Handle systray message.
 182  * \param ev The event.
 183  * \return 0 on no error.
 184  */
 185 int
 186 systray_process_client_message(xcb_client_message_event_t *ev)
 187 {
 188     int screen_nbr = 0, ret = 0;
 189     xcb_get_geometry_cookie_t geom_c;
 190     xcb_get_geometry_reply_t *geom_r;
 191     xcb_screen_iterator_t iter;
 192
 193     switch(ev->data.data32[1])
 194     {
 195       case SYSTEM_TRAY_REQUEST_DOCK:
 196         geom_c = xcb_get_geometry_unchecked(globalconf.connection, ev->window);
 197
 198         if(!(geom_r = xcb_get_geometry_reply(globalconf.connection, geom_c, NULL)))
 199             return -1;
 200
 201         for(iter = xcb_setup_roots_iterator(xcb_get_setup(globalconf.connection)), screen_nbr = 0;
 202             iter.rem && iter.data->root != geom_r->root; xcb_screen_next (&iter), ++screen_nbr);
 203
 204         p_delete(&geom_r);
 205
 206         ret = systray_request_handle(ev->data.data32[2], screen_nbr, NULL);
 207         break;
 208     }
 209
 210     return ret;
 211 }
 212
 213 /** Check if a window is a KDE tray.
 214  * \param w The window to check.
 215  * \return True if it is, false otherwise.
 216  */
 217 bool
 218 systray_iskdedockapp(xcb_window_t w)
 219 {
 220     xcb_get_property_cookie_t kde_check_q;
 221     xcb_get_property_reply_t *kde_check;
 222     bool ret;
 223
 224     /* Check if that is a KDE tray because it does not respect fdo standards,
 225      * thanks KDE. */
 226     kde_check_q = xcb_get_property_unchecked(globalconf.connection, false, w,
 227                                              _KDE_NET_WM_SYSTEM_TRAY_WINDOW_FOR,
 228                                              WINDOW, 0, 1);
 229
 230     kde_check = xcb_get_property_reply(globalconf.connection, kde_check_q, NULL);
 231
 232     /* it's a KDE systray ?*/
 233     ret = (kde_check && kde_check->value_len);
 234
 235     p_delete(&kde_check);
 236
 237     return ret;
 238 }
 239
 240 /** Handle xembed client message.
 241  * \param ev The event.
 242  * \return 0 on no error.
 243  */
 244 int
 245 xembed_process_client_message(xcb_client_message_event_t *ev)
 246 {
 247     switch(ev->data.data32[1])
 248     {
 249       case XEMBED_REQUEST_FOCUS:
 250         xembed_focus_in(globalconf.connection, ev->window, XEMBED_FOCUS_CURRENT);
 251         break;
 252     }
 253     return 0;
 254 }
 255
 256 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80