reactos/modules/rosapps/applications/net/tsclient/rdesktop/ewmhints.c

457 lines
11 KiB
C

/* -*- c-basic-offset: 8 -*-
rdesktop: A Remote Desktop Protocol client.
Support functions for Extended Window Manager Hints,
http://www.freedesktop.org/wiki/Standards_2fwm_2dspec
Copyright (C) Peter Astrand <astrand@cendio.se> 2005
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/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include "rdesktop.h"
#define _NET_WM_STATE_REMOVE 0 /* remove/unset property */
#define _NET_WM_STATE_ADD 1 /* add/set property */
#define _NET_WM_STATE_TOGGLE 2 /* toggle property */
/*
Get window property value (32 bit format)
Returns zero on success, -1 on error
*/
static int
get_property_value(RDPCLIENT * This, Window wnd, char *propname, long max_length,
unsigned long *nitems_return, unsigned char **prop_return, int nowarn)
{
int result;
Atom property;
Atom actual_type_return;
int actual_format_return;
unsigned long bytes_after_return;
property = XInternAtom(This->display, propname, True);
if (property == None)
{
fprintf(stderr, "Atom %s does not exist\n", propname);
return (-1);
}
result = XGetWindowProperty(This->display, wnd, property, 0, /* long_offset */
max_length, /* long_length */
False, /* delete */
AnyPropertyType, /* req_type */
&actual_type_return,
&actual_format_return,
nitems_return, &bytes_after_return, prop_return);
if (result != Success)
{
fprintf(stderr, "XGetWindowProperty failed\n");
return (-1);
}
if (actual_type_return == None || actual_format_return == 0)
{
if (!nowarn)
fprintf(stderr, "Window is missing property %s\n", propname);
return (-1);
}
if (bytes_after_return)
{
fprintf(stderr, "%s is too big for me\n", propname);
return (-1);
}
if (actual_format_return != 32)
{
fprintf(stderr, "%s has bad format\n", propname);
return (-1);
}
return (0);
}
/*
Get current desktop number
Returns -1 on error
*/
static int
get_current_desktop(RDPCLIENT * This)
{
unsigned long nitems_return;
unsigned char *prop_return;
int current_desktop;
if (get_property_value
(This, DefaultRootWindow(This->display), "_NET_CURRENT_DESKTOP", 1, &nitems_return,
&prop_return, 0) < 0)
return (-1);
if (nitems_return != 1)
{
fprintf(stderr, "_NET_CURRENT_DESKTOP has bad length\n");
return (-1);
}
current_desktop = *prop_return;
XFree(prop_return);
return current_desktop;
}
/*
Get workarea geometry
Returns zero on success, -1 on error
*/
int
get_current_workarea(RDPCLIENT * This, uint32 * x, uint32 * y, uint32 * width, uint32 * height)
{
int current_desktop;
unsigned long nitems_return;
unsigned char *prop_return;
uint32 *return_words;
const uint32 net_workarea_x_offset = 0;
const uint32 net_workarea_y_offset = 1;
const uint32 net_workarea_width_offset = 2;
const uint32 net_workarea_height_offset = 3;
const uint32 max_prop_length = 32 * 4; /* Max 32 desktops */
if (get_property_value
(This, DefaultRootWindow(This->display), "_NET_WORKAREA", max_prop_length, &nitems_return,
&prop_return, 0) < 0)
return (-1);
if (nitems_return % 4)
{
fprintf(stderr, "_NET_WORKAREA has odd length\n");
return (-1);
}
current_desktop = get_current_desktop(This);
if (current_desktop < 0)
return -1;
return_words = (uint32 *) prop_return;
*x = return_words[current_desktop * 4 + net_workarea_x_offset];
*y = return_words[current_desktop * 4 + net_workarea_y_offset];
*width = return_words[current_desktop * 4 + net_workarea_width_offset];
*height = return_words[current_desktop * 4 + net_workarea_height_offset];
XFree(prop_return);
return (0);
}
void
ewmh_init(RDPCLIENT * This)
{
/* FIXME: Use XInternAtoms */
This->ewmhints.state_maximized_vert_atom =
XInternAtom(This->display, "_NET_WM_STATE_MAXIMIZED_VERT", False);
This->ewmhints.state_maximized_horz_atom =
XInternAtom(This->display, "_NET_WM_STATE_MAXIMIZED_HORZ", False);
This->ewmhints.state_hidden_atom = XInternAtom(This->display, "_NET_WM_STATE_HIDDEN", False);
This->ewmhints.state_skip_taskbar_atom =
XInternAtom(This->display, "_NET_WM_STATE_SKIP_TASKBAR", False);
This->ewmhints.state_skip_pager_atom = XInternAtom(This->display, "_NET_WM_STATE_SKIP_PAGER", False);
This->ewmhints.state_modal_atom = XInternAtom(This->display, "_NET_WM_STATE_MODAL", False);
This->net_wm_state_atom = XInternAtom(This->display, "_NET_WM_STATE", False);
This->net_wm_desktop_atom = XInternAtom(This->display, "_NET_WM_DESKTOP", False);
This->ewmhints.name_atom = XInternAtom(This->display, "_NET_WM_NAME", False);
This->ewmhints.utf8_string_atom = XInternAtom(This->display, "UTF8_STRING", False);
}
/*
Get the window state: normal/minimized/maximized.
*/
#ifndef MAKE_PROTO
int
ewmh_get_window_state(RDPCLIENT * This, Window w)
{
unsigned long nitems_return;
unsigned char *prop_return;
uint32 *return_words;
unsigned long item;
BOOL maximized_vert, maximized_horz, hidden;
maximized_vert = maximized_horz = hidden = False;
if (get_property_value(This, w, "_NET_WM_STATE", 64, &nitems_return, &prop_return, 0) < 0)
return SEAMLESSRDP_NORMAL;
return_words = (uint32 *) prop_return;
for (item = 0; item < nitems_return; item++)
{
if (return_words[item] == This->ewmhints.state_maximized_vert_atom)
maximized_vert = True;
if (return_words[item] == This->ewmhints.state_maximized_horz_atom)
maximized_horz = True;
if (return_words[item] == This->ewmhints.state_hidden_atom)
hidden = True;
}
XFree(prop_return);
if (maximized_vert && maximized_horz)
return SEAMLESSRDP_MAXIMIZED;
else if (hidden)
return SEAMLESSRDP_MINIMIZED;
else
return SEAMLESSRDP_NORMAL;
}
static int
ewmh_modify_state(RDPCLIENT * This, Window wnd, int add, Atom atom1, Atom atom2)
{
Status status;
XEvent xevent;
int result;
unsigned long nitems;
unsigned char *props;
uint32 state = WithdrawnState;
/* The spec states that the window manager must respect any
_NET_WM_STATE attributes on a withdrawn window. In order words, we
modify the attributes directly for withdrawn windows and ask the WM
to do it for active windows. */
result = get_property_value(This, wnd, "WM_STATE", 64, &nitems, &props, 1);
if ((result >= 0) && nitems)
{
state = *(uint32 *) props;
XFree(props);
}
if (state == WithdrawnState)
{
if (add)
{
Atom atoms[2];
atoms[0] = atom1;
nitems = 1;
if (atom2)
{
atoms[1] = atom2;
nitems = 2;
}
XChangeProperty(This->display, wnd, This->net_wm_state_atom, XA_ATOM,
32, PropModeAppend, (unsigned char *) atoms, nitems);
}
else
{
Atom *atoms;
int i;
if (get_property_value(This, wnd, "_NET_WM_STATE", 64, &nitems, &props, 1) < 0)
return 0;
atoms = (Atom *) props;
for (i = 0; i < nitems; i++)
{
if ((atoms[i] == atom1) || (atom2 && (atoms[i] == atom2)))
{
if (i != (nitems - 1))
memmove(&atoms[i], &atoms[i + 1],
sizeof(Atom) * (nitems - i - 1));
nitems--;
i--;
}
}
XChangeProperty(This->display, wnd, This->net_wm_state_atom, XA_ATOM,
32, PropModeReplace, (unsigned char *) atoms, nitems);
XFree(props);
}
return 0;
}
xevent.type = ClientMessage;
xevent.xclient.window = wnd;
xevent.xclient.message_type = This->net_wm_state_atom;
xevent.xclient.format = 32;
if (add)
xevent.xclient.data.l[0] = _NET_WM_STATE_ADD;
else
xevent.xclient.data.l[0] = _NET_WM_STATE_REMOVE;
xevent.xclient.data.l[1] = atom1;
xevent.xclient.data.l[2] = atom2;
xevent.xclient.data.l[3] = 0;
xevent.xclient.data.l[4] = 0;
status = XSendEvent(This->display, DefaultRootWindow(This->display), False,
SubstructureNotifyMask | SubstructureRedirectMask, &xevent);
if (!status)
return -1;
return 0;
}
/*
Set the window state: normal/minimized/maximized.
Returns -1 on failure.
*/
int
ewmh_change_state(RDPCLIENT * This, Window wnd, int state)
{
/*
* Deal with the max atoms
*/
if (state == SEAMLESSRDP_MAXIMIZED)
{
if (ewmh_modify_state
(This, wnd, 1, This->ewmhints.state_maximized_vert_atom,
This->ewmhints.state_maximized_horz_atom) < 0)
return -1;
}
else
{
if (ewmh_modify_state
(This, wnd, 0, This->ewmhints.state_maximized_vert_atom,
This->ewmhints.state_maximized_horz_atom) < 0)
return -1;
}
return 0;
}
int
ewmh_get_window_desktop(RDPCLIENT * This, Window wnd)
{
unsigned long nitems_return;
unsigned char *prop_return;
int desktop;
if (get_property_value(This, wnd, "_NET_WM_DESKTOP", 1, &nitems_return, &prop_return, 0) < 0)
return (-1);
if (nitems_return != 1)
{
fprintf(stderr, "_NET_WM_DESKTOP has bad length\n");
return (-1);
}
desktop = *prop_return;
XFree(prop_return);
return desktop;
}
int
ewmh_move_to_desktop(RDPCLIENT * This, Window wnd, unsigned int desktop)
{
Status status;
XEvent xevent;
xevent.type = ClientMessage;
xevent.xclient.window = wnd;
xevent.xclient.message_type = This->net_wm_desktop_atom;
xevent.xclient.format = 32;
xevent.xclient.data.l[0] = desktop;
xevent.xclient.data.l[1] = 0;
xevent.xclient.data.l[2] = 0;
xevent.xclient.data.l[3] = 0;
xevent.xclient.data.l[4] = 0;
status = XSendEvent(This->display, DefaultRootWindow(This->display), False,
SubstructureNotifyMask | SubstructureRedirectMask, &xevent);
if (!status)
return -1;
return 0;
}
void
ewmh_set_wm_name(RDPCLIENT * This, Window wnd, const char *title)
{
int len;
len = strlen(title);
XChangeProperty(This->display, wnd, This->ewmhints.name_atom, This->ewmhints.utf8_string_atom,
8, PropModeReplace, (unsigned char *) title, len);
}
int
ewmh_set_window_popup(RDPCLIENT * This, Window wnd)
{
if (ewmh_modify_state
(This, wnd, 1, This->ewmhints.state_skip_taskbar_atom, This->ewmhints.state_skip_pager_atom) < 0)
return -1;
return 0;
}
int
ewmh_set_window_modal(RDPCLIENT * This, Window wnd)
{
if (ewmh_modify_state(This, wnd, 1, This->ewmhints.state_modal_atom, 0) < 0)
return -1;
return 0;
}
#endif /* MAKE_PROTO */
#if 0
/* FIXME: _NET_MOVERESIZE_WINDOW is for pagers, not for
applications. We should implement _NET_WM_MOVERESIZE instead */
int
ewmh_net_moveresize_window(RDPCLIENT * This, Window wnd, int x, int y, int width, int height)
{
Status status;
XEvent xevent;
Atom moveresize;
moveresize = XInternAtom(This->display, "_NET_MOVERESIZE_WINDOW", False);
if (!moveresize)
{
return -1;
}
xevent.type = ClientMessage;
xevent.xclient.window = wnd;
xevent.xclient.message_type = moveresize;
xevent.xclient.format = 32;
xevent.xclient.data.l[0] = StaticGravity | (1 << 8) | (1 << 9) | (1 << 10) | (1 << 11);
xevent.xclient.data.l[1] = x;
xevent.xclient.data.l[2] = y;
xevent.xclient.data.l[3] = width;
xevent.xclient.data.l[4] = height;
status = XSendEvent(This->display, DefaultRootWindow(This->display), False,
SubstructureNotifyMask | SubstructureRedirectMask, &xevent);
if (!status)
return -1;
return 0;
}
#endif