awesome/ewmh.c
2008-01-03 19:02:23 +01:00

379 lines
10 KiB
C

/*
* 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 <X11/Xatom.h>
#include <X11/Xmd.h>
#include "ewmh.h"
#include "util.h"
#include "tag.h"
#include "focus.h"
#include "screen.h"
#include "client.h"
extern AwesomeConf globalconf;
static Atom net_supported;
static Atom net_client_list;
static Atom net_number_of_desktops;
static Atom net_current_desktop;
static Atom net_desktop_names;
static Atom net_active_window;
static Atom net_close_window;
static Atom net_wm_name;
static Atom net_wm_icon_name;
static Atom net_wm_window_type;
static Atom net_wm_window_type_normal;
static Atom net_wm_window_type_dock;
static Atom net_wm_window_type_splash;
static Atom net_wm_icon;
static Atom net_wm_state;
static Atom net_wm_state_sticky;
static Atom net_wm_state_skip_taskbar;
static Atom net_wm_state_fullscreen;
static Atom utf8_string;
typedef struct
{
const char *name;
Atom *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_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 },
{ "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;
char *names[ATOM_NUMBER];
Atom atoms[ATOM_NUMBER];
for(i = 0; i < ATOM_NUMBER; i++)
names[i] = (char *) AtomNames[i].name;
XInternAtoms(globalconf.display, names, ATOM_NUMBER, False, atoms);
for(i = 0; i < ATOM_NUMBER; i++)
*AtomNames[i].atom = atoms[i];
}
void
ewmh_set_supported_hints(int phys_screen)
{
Atom 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_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;
XChangeProperty(globalconf.display, RootWindow(globalconf.display, phys_screen),
net_supported, XA_ATOM, 32,
PropModeReplace, (unsigned char *) atom, i);
}
void
ewmh_update_net_client_list(int phys_screen)
{
Window *wins;
Client *c;
int n = 0;
for(c = globalconf.clients; c; c = c->next)
if(get_phys_screen(c->screen) == phys_screen)
n++;
wins = p_new(Window, n + 1);
for(n = 0, c = globalconf.clients; c; c = c->next, n++)
if(get_phys_screen(c->screen) == phys_screen)
wins[n] = c->win;
XChangeProperty(globalconf.display, RootWindow(globalconf.display, phys_screen),
net_client_list, XA_WINDOW, 32, PropModeReplace, (unsigned char *) wins, n);
p_delete(&wins);
XFlush(globalconf.display);
}
void
ewmh_update_net_numbers_of_desktop(int phys_screen)
{
CARD32 count = 0;
Tag *tag;
for(tag = globalconf.screens[phys_screen].tags; tag; tag = tag->next)
count++;
XChangeProperty(globalconf.display, RootWindow(globalconf.display, phys_screen),
net_number_of_desktops, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &count, 1);
}
void
ewmh_update_net_current_desktop(int phys_screen)
{
CARD32 count = 0;
Tag *tag, **curtags = get_current_tags(phys_screen);
for(tag = globalconf.screens[phys_screen].tags; tag != curtags[0]; tag = tag->next)
count++;
XChangeProperty(globalconf.display, RootWindow(globalconf.display, phys_screen),
net_current_desktop, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &count, 1);
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;
}
XChangeProperty(globalconf.display, RootWindow(globalconf.display, phys_screen),
net_desktop_names, utf8_string, 8, PropModeReplace, (unsigned char *) buf, len);
}
void
ewmh_update_net_active_window(int phys_screen)
{
Window win;
Client *sel = focus_get_current_client(phys_screen);
win = sel ? sel->win : None;
XChangeProperty(globalconf.display, RootWindow(globalconf.display, phys_screen),
net_active_window, XA_WINDOW, 32, PropModeReplace, (unsigned char *) &win, 1);
}
static void
ewmh_process_state_atom(Client *c, Atom state, int set)
{
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;
else if(set == _NET_WM_STATE_ADD)
c->skiptb = True;
}
else if(state == net_wm_state_fullscreen)
{
Area area = get_screen_area(c->screen, NULL, NULL);
/* reset max attribute */
if(set == _NET_WM_STATE_REMOVE)
c->ismax = True;
else if(set == _NET_WM_STATE_ADD)
c->ismax = False;
client_maximize(c, area.x, area.y, area.width, area.height, True);
}
}
static void
ewmh_process_window_type_atom(Client *c, Atom state)
{
if(state == net_wm_window_type_normal)
{
/* do nothing */
}
else if(state == net_wm_window_type_dock
|| state == net_wm_window_type_splash)
{
c->border = 0;
c->skip = True;
c->isfixed = True;
c->isfloating = True;
}
}
void
ewmh_process_client_message(XClientMessageEvent *ev)
{
Client *c;
int screen;
if(ev->message_type == net_current_desktop)
for(screen = 0; screen < ScreenCount(globalconf.display); screen++)
if(ev->window == RootWindow(globalconf.display, screen))
tag_view(screen, ev->data.l[0]);
if(ev->message_type == net_close_window)
{
if((c = get_client_bywin(globalconf.clients, ev->window)))
client_kill(c);
}
else if(ev->message_type == net_wm_state)
{
if((c = get_client_bywin(globalconf.clients, ev->window)))
{
ewmh_process_state_atom(c, (Atom) ev->data.l[1], ev->data.l[0]);
if(ev->data.l[2])
ewmh_process_state_atom(c, (Atom) ev->data.l[2], ev->data.l[0]);
}
}
}
void
ewmh_check_client_hints(Client *c)
{
int format;
Atom real, *state;
unsigned char *data = NULL;
unsigned long i, n, extra;
if(XGetWindowProperty(globalconf.display, c->win, net_wm_state, 0L, LONG_MAX, False,
XA_ATOM, &real, &format, &n, &extra,
(unsigned char **) &data) == Success && data)
{
state = (Atom *) data;
for(i = 0; i < n; i++)
ewmh_process_state_atom(c, state[i], _NET_WM_STATE_ADD);
XFree(data);
}
if(XGetWindowProperty(globalconf.display, c->win, net_wm_window_type, 0L, LONG_MAX, False,
XA_ATOM, &real, &format, &n, &extra,
(unsigned char **) &data) == Success && data)
{
state = (Atom *) data;
for(i = 0; i < n; i++)
ewmh_process_window_type_atom(c, state[i]);
XFree(data);
}
}
NetWMIcon *
ewmh_get_window_icon(Window w)
{
NetWMIcon *icon;
Atom type;
int format, size, i;
unsigned long items, rest, *data, pixel;
unsigned char *imgdata, *wdata;
if(XGetWindowProperty(globalconf.display, w,
net_wm_icon, 0L, LONG_MAX, False, XA_CARDINAL, &type, &format,
&items, &rest, &wdata) != Success
|| !wdata)
return NULL;
if(type != XA_CARDINAL || format != 32 || items < 2)
{
XFree(wdata);
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);
XFree(wdata);
return NULL;
}
icon->image = p_new(unsigned char, size * 4);
for(imgdata = icon->image, i = 2; i < size + 2; i++, imgdata += 4)
{
pixel = data[i];
imgdata[3] = (pixel >> 24) & 0xff; /* A */
imgdata[0] = (pixel >> 16) & 0xff; /* R */
imgdata[1] = (pixel >> 8) & 0xff; /* G */
imgdata[2] = pixel & 0xff; /* B */
}
XFree(wdata);
return icon;
}
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