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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 <xcb/xcb.h>
#include <xcb/xcb_atom.h>
#include "ewmh.h"
#include "tag.h"
#include "focus.h"
#include "screen.h"
#include "client.h"
#include "widget.h"
#include "titlebar.h"
extern AwesomeConf globalconf;
static xcb_atom_t net_supported;
static xcb_atom_t net_client_list;
static xcb_atom_t net_number_of_desktops;
static xcb_atom_t net_current_desktop;
static xcb_atom_t net_desktop_names;
static xcb_atom_t net_active_window;
static xcb_atom_t net_close_window;
static xcb_atom_t net_wm_name;
static xcb_atom_t net_wm_icon_name;
static xcb_atom_t net_wm_window_type;
static xcb_atom_t net_wm_window_type_normal;
static xcb_atom_t net_wm_window_type_dock;
static xcb_atom_t net_wm_window_type_splash;
static xcb_atom_t net_wm_window_type_dialog;
static xcb_atom_t net_wm_icon;
static xcb_atom_t net_wm_state;
static xcb_atom_t net_wm_state_sticky;
static xcb_atom_t net_wm_state_skip_taskbar;
static xcb_atom_t net_wm_state_fullscreen;
static xcb_atom_t net_wm_state_above;
static xcb_atom_t net_wm_state_below;
static xcb_atom_t utf8_string;
typedef struct
{
const char *name;
xcb_atom_t *atom;
} AtomItem;
static AtomItem AtomNames[] =
{
{ "_NET_SUPPORTED", &net_supported },
{ "_NET_CLIENT_LIST", &net_client_list },
{ "_NET_NUMBER_OF_DESKTOPS", &net_number_of_desktops },
{ "_NET_CURRENT_DESKTOP", &net_current_desktop },
{ "_NET_DESKTOP_NAMES", &net_desktop_names },
{ "_NET_ACTIVE_WINDOW", &net_active_window },
{ "_NET_CLOSE_WINDOW", &net_close_window },
{ "_NET_WM_NAME", &net_wm_name },
{ "_NET_WM_ICON_NAME", &net_wm_icon_name },
{ "_NET_WM_WINDOW_TYPE", &net_wm_window_type },
{ "_NET_WM_WINDOW_TYPE_NORMAL", &net_wm_window_type_normal },
{ "_NET_WM_WINDOW_TYPE_DOCK", &net_wm_window_type_dock },
{ "_NET_WM_WINDOW_TYPE_SPLASH", &net_wm_window_type_splash },
{ "_NET_WM_WINDOW_TYPE_DIALOG", &net_wm_window_type_dialog },
{ "_NET_WM_ICON", &net_wm_icon },
{ "_NET_WM_STATE", &net_wm_state },
{ "_NET_WM_STATE_STICKY", &net_wm_state_sticky },
{ "_NET_WM_STATE_SKIP_TASKBAR", &net_wm_state_skip_taskbar },
{ "_NET_WM_STATE_FULLSCREEN", &net_wm_state_fullscreen },
{ "_NET_WM_STATE_ABOVE", &net_wm_state_above },
{ "_NET_WM_STATE_BELOW", &net_wm_state_below },
{ "UTF8_STRING", &utf8_string },
};
#define ATOM_NUMBER (sizeof(AtomNames)/sizeof(AtomItem))
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
void
ewmh_init_atoms(void)
{
unsigned int i;
xcb_intern_atom_cookie_t cs[ATOM_NUMBER];
xcb_intern_atom_reply_t *r;
/*
* Create the atom and get the reply in a XCB way (e.g. send all
* the requests at the same time and then get the replies)
*/
for(i = 0; i < ATOM_NUMBER; i++)
cs[i] = xcb_intern_atom_unchecked(globalconf.connection,
false,
strlen(AtomNames[i].name),
AtomNames[i].name);
for(i = 0; i < ATOM_NUMBER; i++)
{
r = xcb_intern_atom_reply(globalconf.connection, cs[i], NULL);
if(!r)
/* An error occured, get reply for next atom */
continue;
*AtomNames[i].atom = r->atom;
p_delete(&r);
}
}
void
ewmh_set_supported_hints(int phys_screen)
{
xcb_atom_t atom[ATOM_NUMBER];
int i = 0;
atom[i++] = net_supported;
atom[i++] = net_client_list;
atom[i++] = net_number_of_desktops;
atom[i++] = net_current_desktop;
atom[i++] = net_desktop_names;
atom[i++] = net_active_window;
atom[i++] = net_close_window;
atom[i++] = net_wm_name;
atom[i++] = net_wm_icon_name;
atom[i++] = net_wm_window_type;
atom[i++] = net_wm_window_type_normal;
atom[i++] = net_wm_window_type_dock;
atom[i++] = net_wm_window_type_splash;
atom[i++] = net_wm_window_type_dialog;
atom[i++] = net_wm_icon;
atom[i++] = net_wm_state;
atom[i++] = net_wm_state_sticky;
atom[i++] = net_wm_state_skip_taskbar;
atom[i++] = net_wm_state_fullscreen;
atom[i++] = net_wm_state_above;
atom[i++] = net_wm_state_below;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
root_window(globalconf.connection, phys_screen),
net_supported, ATOM, 32, i, atom);
}
void
ewmh_update_net_client_list(int phys_screen)
{
xcb_window_t *wins;
Client *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,
root_window(globalconf.connection, phys_screen),
net_client_list, WINDOW, 32, n, wins);
p_delete(&wins);
}
void
ewmh_update_net_numbers_of_desktop(int phys_screen)
{
uint32_t count = 0;
Tag *tag;
for(tag = globalconf.screens[phys_screen].tags; tag; tag = tag->next)
count++;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
root_window(globalconf.connection, phys_screen),
net_number_of_desktops, CARDINAL, 32, 1, &count);
}
void
ewmh_update_net_current_desktop(int phys_screen)
{
uint32_t count = 0;
Tag *tag, **curtags = tags_get_current(phys_screen);
for(tag = globalconf.screens[phys_screen].tags; tag != curtags[0]; tag = tag->next)
count++;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
root_window(globalconf.connection, phys_screen),
net_current_desktop, CARDINAL, 32, 1, &count);
p_delete(&curtags);
}
void
ewmh_update_net_desktop_names(int phys_screen)
{
char buf[1024], *pos;
ssize_t len, curr_size;
Tag *tag;
pos = buf;
len = 0;
for(tag = globalconf.screens[phys_screen].tags; tag; tag = tag->next)
{
curr_size = a_strlen(tag->name);
a_strcpy(pos, sizeof(buf), tag->name);
pos += curr_size + 1;
len += curr_size + 1;
}
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
root_window(globalconf.connection, phys_screen),
net_desktop_names, utf8_string, 8, len, buf);
}
void
ewmh_update_net_active_window(int phys_screen)
{
xcb_window_t win;
Client *sel = focus_get_current_client(phys_screen);
win = sel ? sel->win : XCB_NONE;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
root_window(globalconf.connection, phys_screen),
net_active_window, WINDOW, 32, 1, &win);
}
static void
ewmh_process_state_atom(Client *c, xcb_atom_t state, int set)
{
const uint32_t raise_window_val = XCB_STACK_MODE_ABOVE;
if(state == net_wm_state_sticky)
{
Tag *tag;
for(tag = globalconf.screens[c->screen].tags; tag; tag = tag->next)
tag_client(c, tag);
}
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 */
titlebar_position_set(&c->titlebar, c->titlebar.dposition);
c->border = c->oldborder;
c->ismax = false;
client_setfloating(c, c->wasfloating, c->oldlayer);
}
else if(set == _NET_WM_STATE_ADD)
{
geometry = screen_get_area(c->screen, NULL, &globalconf.screens[c->screen].padding);
/* save geometry */
c->m_geometry = c->geometry;
c->wasfloating = c->isfloating;
/* disable titlebar and borders */
titlebar_position_set(&c->titlebar, Off);
c->oldborder = c->border;
c->border = 0;
c->ismax = true;
client_setfloating(c, true, LAYER_FULLSCREEN);
}
widget_invalidate_cache(c->screen, WIDGET_CACHE_CLIENTS);
client_resize(c, geometry, false);
xcb_configure_window(globalconf.connection, c->win, XCB_CONFIG_WINDOW_STACK_MODE, &raise_window_val);
}
else if(state == net_wm_state_above)
{
if(set == _NET_WM_STATE_REMOVE)
{
c->layer = c->oldlayer;
}
else if(set == _NET_WM_STATE_ADD)
{
c->oldlayer = c->layer;
c->layer = LAYER_ABOVE;
}
}
else if(state == net_wm_state_below)
{
if(set == _NET_WM_STATE_REMOVE)
{
c->layer = c->oldlayer;
}
else if(set == _NET_WM_STATE_ADD)
{
c->oldlayer = c->layer;
c->layer = LAYER_BELOW;
}
}
}
static void
ewmh_process_window_type_atom(Client *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->border = 0;
c->skip = true;
c->isfixed = true;
titlebar_position_set(&c->titlebar, Off);
client_setfloating(c, true, LAYER_ABOVE);
}
else if (state == net_wm_window_type_dialog)
client_setfloating(c, true, LAYER_ABOVE);
}
void
ewmh_process_client_message(xcb_client_message_event_t *ev)
{
Client *c;
int screen;
/* TODO: check whether it's correct to use 'type' this way */
if(ev->type == net_current_desktop)
for(screen = 0;
screen < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
screen++)
{
if(ev->window == root_window(globalconf.connection, screen))
tag_view_only_byindex(screen, ev->data.data32[0]);
}
if(ev->type == net_close_window)
{
if((c = client_get_bywin(globalconf.clients, ev->window)))
client_kill(c);
}
else if(ev->type == net_wm_state)
{
if((c = client_get_bywin(globalconf.clients, ev->window)))
{
ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[1], ev->data.data32[0]);
/* TODO: is data32[2] really useful because it doesn't
* seem to be used when sending a ClientMessage in
* event.c:897 */
if(ev->data.data32[2])
ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[2],
ev->data.data32[0]);
}
}
}
void
ewmh_check_client_hints(Client *c)
{
xcb_atom_t *state;
void *data = NULL;
int i;
xcb_get_property_cookie_t c1, c2;
xcb_get_property_reply_t *reply;
/* Send the GetProperty requests which will be processed later */
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, c1, NULL);
if(reply && (data = xcb_get_property_value(reply)))
{
state = (xcb_atom_t *) data;
for(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(i = 0; i < xcb_get_property_value_length(reply); i++)
ewmh_process_window_type_atom(c, state[i]);
}
p_delete(&reply);
}
NetWMIcon *
ewmh_get_window_icon(xcb_window_t w)
{
double alpha;
NetWMIcon *icon;
int size, i;
unsigned long *data;
unsigned char *imgdata, *wdata;
xcb_get_property_reply_t *r;
r = xcb_get_property_reply(globalconf.connection,
xcb_get_property_unchecked(globalconf.connection, false, w,
net_wm_icon, CARDINAL, 0, UINT32_MAX),
NULL);
if(!r || !(wdata = (unsigned char *) xcb_get_property_value(r)))
{
if(r)
p_delete(&r);
return NULL;
}
if(r->type != CARDINAL || r->format != 32 || r->length < 2)
{
p_delete(&r);
return NULL;
}
icon = p_new(NetWMIcon, 1);
data = (unsigned long *) wdata;
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;
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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