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awesome/systray.c

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/*
* systray.c - systray handling
*
* Copyright © 2008-2009 Julien Danjou <julien@danjou.info>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <xcb/xcb.h>
#include <xcb/xcb_icccm.h>
#include <xcb/xcb_atom.h>
#include "luaa.h"
#include "screen.h"
#include "systray.h"
#include "xwindow.h"
#include "common/array.h"
#include "common/atoms.h"
#include "common/xutil.h"
#include "objects/drawin.h"
#define SYSTEM_TRAY_REQUEST_DOCK 0 /* Begin icon docking */
/** Initialize systray information in X.
*/
void
systray_init(void)
{
xcb_screen_t *xscreen = globalconf.screen;
uint32_t values[] = { xscreen->white_pixel };
globalconf.systray.window = xcb_generate_id(globalconf.connection);
xcb_create_window(globalconf.connection, xscreen->root_depth,
globalconf.systray.window,
xscreen->root,
-1, -1, 1, 1, 0,
XCB_COPY_FROM_PARENT, xscreen->root_visual,
XCB_CW_BACK_PIXEL, values);
}
/** Register systray in X.
*/
static void
systray_register(void)
{
xcb_client_message_event_t ev;
xcb_screen_t *xscreen = globalconf.screen;
char *atom_name;
xcb_intern_atom_cookie_t atom_systray_q;
xcb_intern_atom_reply_t *atom_systray_r;
xcb_atom_t atom_systray;
/* Send requests */
if(!(atom_name = xcb_atom_name_by_screen("_NET_SYSTEM_TRAY", globalconf.default_screen)))
{
warn("error getting systray atom");
return;
}
atom_systray_q = xcb_intern_atom_unchecked(globalconf.connection, false,
a_strlen(atom_name), atom_name);
p_delete(&atom_name);
/* Fill event */
p_clear(&ev, 1);
ev.response_type = XCB_CLIENT_MESSAGE;
ev.window = xscreen->root;
ev.format = 32;
ev.type = MANAGER;
ev.data.data32[0] = XCB_CURRENT_TIME;
ev.data.data32[2] = globalconf.systray.window;
ev.data.data32[3] = ev.data.data32[4] = 0;
if(!(atom_systray_r = xcb_intern_atom_reply(globalconf.connection, atom_systray_q, NULL)))
{
warn("error getting systray atom");
return;
}
ev.data.data32[1] = atom_systray = atom_systray_r->atom;
p_delete(&atom_systray_r);
xcb_set_selection_owner(globalconf.connection,
globalconf.systray.window,
atom_systray,
XCB_CURRENT_TIME);
xcb_send_event(globalconf.connection, false, xscreen->root, 0xFFFFFF, (char *) &ev);
}
/** Remove systray information in X.
*/
void
systray_cleanup(void)
{
xcb_intern_atom_reply_t *atom_systray_r;
char *atom_name;
if(!(atom_name = xcb_atom_name_by_screen("_NET_SYSTEM_TRAY", globalconf.default_screen))
|| !(atom_systray_r = xcb_intern_atom_reply(globalconf.connection,
xcb_intern_atom_unchecked(globalconf.connection,
false,
a_strlen(atom_name),
atom_name),
NULL)))
{
warn("error getting systray atom");
p_delete(&atom_name);
return;
}
p_delete(&atom_name);
xcb_set_selection_owner(globalconf.connection,
XCB_NONE,
atom_systray_r->atom,
XCB_CURRENT_TIME);
p_delete(&atom_systray_r);
xcb_unmap_window(globalconf.connection,
globalconf.systray.window);
}
/** Handle a systray request.
* \param embed_win The window to embed.
* \param info The embedding info
* \return 0 on no error.
*/
int
systray_request_handle(xcb_window_t embed_win, xembed_info_t *info)
{
xembed_window_t em;
xcb_get_property_cookie_t em_cookie;
const uint32_t select_input_val[] =
{
XCB_EVENT_MASK_STRUCTURE_NOTIFY
| XCB_EVENT_MASK_PROPERTY_CHANGE
| XCB_EVENT_MASK_ENTER_WINDOW
};
/* check if not already trayed */
if(xembed_getbywin(&globalconf.embedded, embed_win))
return -1;
p_clear(&em_cookie, 1);
if(!info)
em_cookie = xembed_info_get_unchecked(globalconf.connection, embed_win);
xcb_change_window_attributes(globalconf.connection, embed_win, XCB_CW_EVENT_MASK,
select_input_val);
xwindow_set_state(embed_win, XCB_WM_STATE_WITHDRAWN);
/* we grab the window, but also make sure it's automatically reparented back
* to the root window if we should die.
*/
xcb_change_save_set(globalconf.connection, XCB_SET_MODE_INSERT, embed_win);
xcb_reparent_window(globalconf.connection, embed_win,
globalconf.systray.window,
0, 0);
em.win = embed_win;
if(info)
em.info = *info;
else
xembed_info_get_reply(globalconf.connection, em_cookie, &em.info);
xembed_embedded_notify(globalconf.connection, em.win,
globalconf.systray.window,
MIN(XEMBED_VERSION, em.info.version));
xembed_window_array_append(&globalconf.embedded, em);
luaA_systray_invalidate();
return 0;
}
/** Handle systray message.
* \param ev The event.
* \return 0 on no error.
*/
int
systray_process_client_message(xcb_client_message_event_t *ev)
{
int ret = 0;
xcb_get_geometry_cookie_t geom_c;
xcb_get_geometry_reply_t *geom_r;
switch(ev->data.data32[1])
{
case SYSTEM_TRAY_REQUEST_DOCK:
geom_c = xcb_get_geometry_unchecked(globalconf.connection, ev->window);
if(!(geom_r = xcb_get_geometry_reply(globalconf.connection, geom_c, NULL)))
return -1;
if(globalconf.screen->root == geom_r->root)
ret = systray_request_handle(ev->data.data32[2], NULL);
p_delete(&geom_r);
break;
}
return ret;
}
/** Check if a window is a KDE tray.
* \param w The window to check.
* \return True if it is, false otherwise.
*/
bool
systray_iskdedockapp(xcb_window_t w)
{
xcb_get_property_cookie_t kde_check_q;
xcb_get_property_reply_t *kde_check;
bool ret;
/* Check if that is a KDE tray because it does not respect fdo standards,
* thanks KDE. */
kde_check_q = xcb_get_property_unchecked(globalconf.connection, false, w,
_KDE_NET_WM_SYSTEM_TRAY_WINDOW_FOR,
XCB_ATOM_WINDOW, 0, 1);
kde_check = xcb_get_property_reply(globalconf.connection, kde_check_q, NULL);
/* it's a KDE systray ?*/
ret = (kde_check && kde_check->value_len);
p_delete(&kde_check);
return ret;
}
/** Handle xembed client message.
* \param ev The event.
* \return 0 on no error.
*/
int
xembed_process_client_message(xcb_client_message_event_t *ev)
{
switch(ev->data.data32[1])
{
case XEMBED_REQUEST_FOCUS:
xembed_focus_in(globalconf.connection, ev->window, XEMBED_FOCUS_CURRENT);
break;
}
return 0;
}
/** Inform lua that the systray needs to be updated.
*/
void
luaA_systray_invalidate(void)
{
signal_object_emit(globalconf.L, &global_signals, "systray::update", 0);
}
static void
systray_update(int base_size, bool horizontal)
{
if(base_size <= 0)
return;
/* Give the systray window the correct size */
uint32_t config_vals[4] = { base_size, base_size, 0, 0 };
if(horizontal)
config_vals[0] = base_size * globalconf.embedded.len;
else
config_vals[1] = base_size * globalconf.embedded.len;
xcb_configure_window(globalconf.connection,
globalconf.systray.window,
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
config_vals);
/* Now resize each embedded window */
config_vals[0] = config_vals[1] = 0;
config_vals[2] = config_vals[3] = base_size;
for(int i = 0; i < globalconf.embedded.len; i++)
{
xembed_window_t *em = &globalconf.embedded.tab[i];
xcb_configure_window(globalconf.connection, em->win,
XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
config_vals);
xcb_map_window(globalconf.connection, em->win);
if(horizontal)
config_vals[0] += base_size;
else
config_vals[1] += base_size;
}
}
/** Update the systray
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lparam The drawin to display the systray in.
* \lparam x X position for the systray.
* \lparam y Y position for the systray.
* \lparam base_size The size (width and height) each systray item gets.
* \lparam horiz If true, the systray is horizontal, else vertical
*/
int
luaA_systray(lua_State *L)
{
if(lua_gettop(L) != 0)
{
size_t bg_len;
drawin_t *w = luaA_checkudata(L, 1, &drawin_class);
int x = luaL_checknumber(L, 2);
int y = luaL_checknumber(L, 3);
int base_size = luaL_checknumber(L, 4);
bool horiz = lua_toboolean(L, 5);
const char *bg = luaL_checklstring(L, 6, &bg_len);
color_t bg_color;
if(color_init_reply(color_init_unchecked(&bg_color, bg, bg_len)))
{
uint32_t config_back[] = { bg_color.pixel };
xcb_change_window_attributes(globalconf.connection,
globalconf.systray.window,
XCB_CW_BACK_PIXEL, config_back);
}
if(globalconf.systray.parent == NULL)
systray_register();
if(globalconf.systray.parent != w)
xcb_reparent_window(globalconf.connection,
globalconf.systray.window,
w->window,
x, y);
else
{
uint32_t config_vals[2] = { x, y };
xcb_configure_window(globalconf.connection,
globalconf.systray.window,
XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y,
config_vals);
}
globalconf.systray.parent = w;
if(globalconf.embedded.len != 0)
{
systray_update(base_size, horiz);
xcb_map_window(globalconf.connection,
globalconf.systray.window);
}
else
xcb_unmap_window(globalconf.connection,
globalconf.systray.window);
}
lua_pushnumber(L, globalconf.embedded.len);
luaA_object_push(L, globalconf.systray.parent);
return 2;
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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