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awesome/ewmh.c

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/*
* ewmh.c - EWMH support functions
*
* Copyright © 2007-2008 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 <sys/types.h>
#include <unistd.h>
#include <xcb/xcb.h>
#include <xcb/xcb_atom.h>
#include "ewmh.h"
#include "tag.h"
#include "screen.h"
#include "client.h"
#include "widget.h"
#include "cnode.h"
#include "titlebar.h"
#include "common/atoms.h"
extern awesome_t globalconf;
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
void
ewmh_init(int phys_screen)
{
xcb_window_t father;
xcb_screen_t *xscreen = xutil_screen_get(globalconf.connection, phys_screen);
xcb_atom_t atom[] =
{
_NET_SUPPORTED,
_NET_SUPPORTING_WM_CHECK,
_NET_CLIENT_LIST,
_NET_CLIENT_LIST_STACKING,
_NET_NUMBER_OF_DESKTOPS,
_NET_CURRENT_DESKTOP,
_NET_DESKTOP_NAMES,
_NET_ACTIVE_WINDOW,
_NET_WORKAREA,
_NET_CLOSE_WINDOW,
_NET_WM_NAME,
_NET_WM_ICON_NAME,
_NET_WM_VISIBLE_ICON_NAME,
_NET_WM_DESKTOP,
_NET_WM_WINDOW_TYPE,
_NET_WM_WINDOW_TYPE_NORMAL,
_NET_WM_WINDOW_TYPE_DESKTOP,
_NET_WM_WINDOW_TYPE_DOCK,
_NET_WM_WINDOW_TYPE_SPLASH,
_NET_WM_WINDOW_TYPE_DIALOG,
_NET_WM_ICON,
_NET_WM_PID,
_NET_WM_STATE,
_NET_WM_STATE_STICKY,
_NET_WM_STATE_SKIP_TASKBAR,
_NET_WM_STATE_FULLSCREEN,
_NET_WM_STATE_ABOVE,
_NET_WM_STATE_BELOW,
_NET_WM_STATE_MODAL,
_NET_WM_STATE_HIDDEN,
_NET_WM_STATE_DEMANDS_ATTENTION
};
int i;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xscreen->root, _NET_SUPPORTED, ATOM, 32,
countof(atom), atom);
/* create our own window */
father = xcb_generate_id(globalconf.connection);
xcb_create_window(globalconf.connection, xscreen->root_depth,
father, xscreen->root, -1, -1, 1, 1, 0,
XCB_COPY_FROM_PARENT, xscreen->root_visual, 0, NULL);
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xscreen->root, _NET_SUPPORTING_WM_CHECK, WINDOW, 32,
1, &father);
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_SUPPORTING_WM_CHECK, WINDOW, 32,
1, &father);
/* set the window manager name */
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_WM_NAME, UTF8_STRING, 8, 7, "awesome");
/* set the window manager PID */
i = getpid();
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_WM_PID, CARDINAL, 32, 1, &i);
}
void
ewmh_update_net_client_list(int phys_screen)
{
xcb_window_t *wins;
client_t *c;
int n = 0;
for(c = globalconf.clients; c; c = c->next)
n++;
wins = p_new(xcb_window_t, n);
for(n = 0, c = globalconf.clients; c; c = c->next, n++)
if(c->phys_screen == phys_screen)
wins[n] = c->win;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_CLIENT_LIST, WINDOW, 32, n, wins);
p_delete(&wins);
}
/** Set the client list in stacking order, bottom to top.
* \param phys_screen The physical screen id.
*/
void
ewmh_update_net_client_list_stacking(int phys_screen)
{
xcb_window_t *wins;
client_node_t *c;
int n = 0;
for(c = globalconf.stack; c; c = c->next)
n++;
wins = p_new(xcb_window_t, n);
for(n = 0, c = *client_node_list_last(&globalconf.stack); c; c = c->prev, n++)
if(c->client->phys_screen == phys_screen)
wins[n] = c->client->win;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_CLIENT_LIST_STACKING, WINDOW, 32, n, wins);
p_delete(&wins);
}
void
ewmh_update_net_numbers_of_desktop(int phys_screen)
{
uint32_t count = globalconf.screens[phys_screen].tags.len;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_NUMBER_OF_DESKTOPS, CARDINAL, 32, 1, &count);
}
void
ewmh_update_net_current_desktop(int phys_screen)
{
tag_array_t *tags = &globalconf.screens[phys_screen].tags;
uint32_t count = 0;
tag_t **curtags = tags_get_current(phys_screen);
while(count < (uint32_t) tags->len && tags->tab[count] != curtags[0])
count++;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_CURRENT_DESKTOP, CARDINAL, 32, 1, &count);
p_delete(&curtags);
}
void
ewmh_update_net_desktop_names(int phys_screen)
{
tag_array_t *tags = &globalconf.screens[phys_screen].tags;
buffer_t buf;
buffer_inita(&buf, BUFSIZ);
for(int i = 0; i < tags->len; i++)
{
buffer_adds(&buf, tags->tab[i]->name);
buffer_addc(&buf, '\0');
}
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_DESKTOP_NAMES, UTF8_STRING, 8, buf.len, buf.s);
buffer_wipe(&buf);
}
/** Update the work area space for each physical screen and each desktop.
* \param phys_screen The physical screen id.
*/
void
ewmh_update_workarea(int phys_screen)
{
tag_array_t *tags = &globalconf.screens[phys_screen].tags;
uint32_t *area = p_alloca(uint32_t, tags->len * 4);
area_t geom = screen_area_get(&globalconf.screens[phys_screen].geometry,
globalconf.screens[phys_screen].statusbar,
&globalconf.screens[phys_screen].padding);
for(int i = 0; i < tags->len; i++)
{
area[4 * i + 0] = geom.x;
area[4 * i + 1] = geom.y;
area[4 * i + 2] = geom.width;
area[4 * i + 3] = geom.height;
}
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_WORKAREA, CARDINAL, 32, tags->len * 4, area);
}
void
ewmh_update_net_active_window(int phys_screen)
{
xcb_window_t win;
if(globalconf.screen_focus->client_focus
&& globalconf.screen_focus->client_focus->phys_screen == phys_screen)
win = globalconf.screen_focus->client_focus->win;
else
win = XCB_NONE;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xutil_screen_get(globalconf.connection, phys_screen)->root,
_NET_ACTIVE_WINDOW, WINDOW, 32, 1, &win);
}
static void
ewmh_process_state_atom(client_t *c, xcb_atom_t state, int set)
{
if(state == _NET_WM_STATE_STICKY)
{
tag_array_t *tags = &globalconf.screens[c->screen].tags;
for(int i = 0; i < tags->len; i++)
tag_client(c, tags->tab[i]);
}
else if(state == _NET_WM_STATE_SKIP_TASKBAR)
{
if(set == _NET_WM_STATE_REMOVE)
{
c->skiptb = false;
c->skip = false;
}
else if(set == _NET_WM_STATE_ADD)
{
c->skiptb = true;
c->skip = true;
}
}
else if(state == _NET_WM_STATE_FULLSCREEN)
{
area_t geometry = c->geometry;
if(set == _NET_WM_STATE_REMOVE)
{
/* restore geometry */
geometry = c->m_geometry;
/* restore borders and titlebar */
if(c->titlebar && c->titlebar->sw && (c->titlebar->position = c->titlebar->oldposition))
xcb_map_window(globalconf.connection, c->titlebar->sw->window);
c->noborder = false;
c->ismax = false;
client_setlayer(c, c->oldlayer);
client_setborder(c, c->oldborder);
client_setfloating(c, c->wasfloating);
}
else if(set == _NET_WM_STATE_ADD)
{
geometry = screen_area_get(&globalconf.screens[c->screen].geometry,
NULL,
&globalconf.screens[c->screen].padding);
/* save geometry */
c->m_geometry = c->geometry;
c->wasfloating = c->isfloating;
/* disable titlebar and borders */
if(c->titlebar && c->titlebar->sw && (c->titlebar->oldposition = c->titlebar->position))
{
xcb_unmap_window(globalconf.connection, c->titlebar->sw->window);
c->titlebar->position = Off;
}
c->ismax = true;
c->oldborder = c->border;
client_setborder(c, 0);
c->noborder = true;
c->oldlayer = c->layer;
client_setlayer(c, LAYER_FULLSCREEN);
client_setfloating(c, true);
}
widget_invalidate_cache(c->screen, WIDGET_CACHE_CLIENTS);
client_resize(c, geometry, false);
}
else if(state == _NET_WM_STATE_ABOVE)
{
if(set == _NET_WM_STATE_REMOVE)
client_setlayer(c, c->oldlayer);
else if(set == _NET_WM_STATE_ADD)
{
c->oldlayer = c->layer;
client_setlayer(c, LAYER_ABOVE);
}
}
else if(state == _NET_WM_STATE_BELOW)
{
if(set == _NET_WM_STATE_REMOVE)
client_setlayer(c, c->oldlayer);
else if(set == _NET_WM_STATE_ADD)
{
c->oldlayer = c->layer;
client_setlayer(c, LAYER_BELOW);
}
}
else if(state == _NET_WM_STATE_MODAL)
{
if(set == _NET_WM_STATE_REMOVE)
client_setlayer(c, c->oldlayer);
else if(set == _NET_WM_STATE_ADD)
{
c->oldlayer = c->layer;
client_setlayer(c, LAYER_MODAL);
}
}
else if(state == _NET_WM_STATE_HIDDEN)
{
if(set == _NET_WM_STATE_REMOVE)
c->ishidden = false;
else if(set == _NET_WM_STATE_ADD)
c->ishidden = true;
globalconf.screens[c->screen].need_arrange = true;
}
else if(state == _NET_WM_STATE_DEMANDS_ATTENTION)
{
if(set == _NET_WM_STATE_REMOVE)
c->isurgent = false;
else if(set == _NET_WM_STATE_ADD)
{
c->isurgent = true;
/* execute hook */
luaA_client_userdata_new(globalconf.L, c);
luaA_dofunction(globalconf.L, globalconf.hooks.urgent, 1, 0);
widget_invalidate_cache(c->screen, WIDGET_CACHE_CLIENTS);
}
}
}
static void
ewmh_process_window_type_atom(client_t *c, xcb_atom_t state)
{
if(state == _NET_WM_WINDOW_TYPE_NORMAL)
{
/* do nothing. this is REALLY IMPORTANT */
}
else if(state == _NET_WM_WINDOW_TYPE_DOCK
|| state == _NET_WM_WINDOW_TYPE_SPLASH)
{
c->skip = true;
c->isfixed = true;
if(c->titlebar && c->titlebar->position && c->titlebar->sw)
{
xcb_unmap_window(globalconf.connection, c->titlebar->sw->window);
c->titlebar->position = Off;
}
client_setborder(c, 0);
c->noborder = true;
client_setlayer(c, LAYER_ABOVE);
client_setfloating(c, true);
}
else if(state == _NET_WM_WINDOW_TYPE_DIALOG)
{
client_setlayer(c, LAYER_MODAL);
client_setfloating(c, true);
}
else if(state == _NET_WM_WINDOW_TYPE_DESKTOP)
{
tag_array_t *tags = &globalconf.screens[c->screen].tags;
c->noborder = true;
c->isfixed = true;
c->skip = true;
client_setlayer(c, LAYER_DESKTOP);
for(int i = 0; i < tags->len; i++)
tag_client(c, tags->tab[i]);
}
}
int
ewmh_process_client_message(xcb_client_message_event_t *ev)
{
client_t *c;
int screen;
if(ev->type == _NET_CURRENT_DESKTOP)
for(screen = 0;
screen < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
screen++)
{
if(ev->window == xutil_screen_get(globalconf.connection, screen)->root)
tag_view_only_byindex(screen, ev->data.data32[0]);
}
else if(ev->type == _NET_CLOSE_WINDOW)
{
if((c = client_getbywin(ev->window)))
client_kill(c);
}
else if(ev->type == _NET_WM_DESKTOP)
{
if((c = client_getbywin(ev->window)))
{
tag_array_t *tags = &globalconf.screens[c->screen].tags;
if(ev->data.data32[0] == 0xffffffff)
for(int i = 0; i < tags->len; i++)
tag_client(c, tags->tab[i]);
else
for(int i = 0; i < tags->len; i++)
if((int)ev->data.data32[0] == i)
tag_client(c, tags->tab[i]);
else
untag_client(c, tags->tab[i]);
}
}
else if(ev->type == _NET_WM_STATE)
{
if((c = client_getbywin(ev->window)))
{
ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[1], ev->data.data32[0]);
if(ev->data.data32[2])
ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[2],
ev->data.data32[0]);
}
}
return 0;
}
void
ewmh_check_client_hints(client_t *c)
{
xcb_atom_t *state;
void *data = NULL;
int desktop;
xcb_get_property_cookie_t c0, c1, c2;
xcb_get_property_reply_t *reply;
/* Send the GetProperty requests which will be processed later */
c0 = xcb_get_property_unchecked(globalconf.connection, false, c->win,
_NET_WM_DESKTOP, XCB_GET_PROPERTY_TYPE_ANY, 0, 1);
c1 = xcb_get_property_unchecked(globalconf.connection, false, c->win,
_NET_WM_STATE, ATOM, 0, UINT32_MAX);
c2 = xcb_get_property_unchecked(globalconf.connection, false, c->win,
_NET_WM_WINDOW_TYPE, ATOM, 0, UINT32_MAX);
reply = xcb_get_property_reply(globalconf.connection, c0, NULL);
if(reply && reply->value_len && (data = xcb_get_property_value(reply)))
{
tag_array_t *tags = &globalconf.screens[c->screen].tags;
desktop = *(uint32_t *) data;
if(desktop == -1)
for(int i = 0; i < tags->len; i++)
tag_client(c, tags->tab[i]);
else
for(int i = 0; i < tags->len; i++)
if(desktop == i)
tag_client(c, tags->tab[i]);
else
untag_client(c, tags->tab[i]);
}
p_delete(&reply);
reply = xcb_get_property_reply(globalconf.connection, c1, NULL);
if(reply && (data = xcb_get_property_value(reply)))
{
state = (xcb_atom_t *) data;
for(int i = 0; i < xcb_get_property_value_length(reply); i++)
ewmh_process_state_atom(c, state[i], _NET_WM_STATE_ADD);
}
p_delete(&reply);
reply = xcb_get_property_reply(globalconf.connection, c2, NULL);
if(reply && (data = xcb_get_property_value(reply)))
{
state = (xcb_atom_t *) data;
for(int i = 0; i < xcb_get_property_value_length(reply); i++)
ewmh_process_window_type_atom(c, state[i]);
}
p_delete(&reply);
}
/** Send request to get NET_WM_ICON (EWMH)
* \param w The window.
* \return The cookie associated with the request.
*/
xcb_get_property_cookie_t
ewmh_window_icon_get_unchecked(xcb_window_t w)
{
return xcb_get_property_unchecked(globalconf.connection, false, w,
_NET_WM_ICON, CARDINAL, 0, UINT32_MAX);
}
/** Get NET_WM_ICON.
* \param cookie The cookie.
* \return A netwm_icon_t structure which must be deleted after usage.
*/
netwm_icon_t *
ewmh_window_icon_get_reply(xcb_get_property_cookie_t cookie)
{
double alpha;
netwm_icon_t *icon;
int size, i;
uint32_t *data;
unsigned char *imgdata;
xcb_get_property_reply_t *r;
r = xcb_get_property_reply(globalconf.connection, cookie, NULL);
if(!r || r->type != CARDINAL || r->format != 32 || r->length < 2 ||
!(data = (uint32_t *) xcb_get_property_value(r)))
{
p_delete(&r);
return NULL;
}
icon = p_new(netwm_icon_t, 1);
icon->width = data[0];
icon->height = data[1];
size = icon->width * icon->height;
if(!size)
{
p_delete(&icon);
p_delete(&r);
return NULL;
}
icon->image = p_new(unsigned char, size * 4);
for(imgdata = icon->image, i = 2; i < size + 2; i++, imgdata += 4)
{
imgdata[3] = (data[i] >> 24) & 0xff; /* A */
alpha = imgdata[3] / 255.0;
imgdata[2] = ((data[i] >> 16) & 0xff) * alpha; /* R */
imgdata[1] = ((data[i] >> 8) & 0xff) * alpha; /* G */
imgdata[0] = (data[i] & 0xff) * alpha; /* B */
}
p_delete(&r);
return icon;
}
/**
* Restart awesome.
*/
void
ewmh_restart(void)
{
client_t *c;
for(c = globalconf.clients; c; c = c->next)
client_unban(c);
xcb_flush(globalconf.connection);
xcb_disconnect(globalconf.connection);
a_exec(globalconf.argv);
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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