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457 lines
11 KiB
C
457 lines
11 KiB
C
/* -*- c-basic-offset: 8 -*-
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rdesktop: A Remote Desktop Protocol client.
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Support functions for Extended Window Manager Hints,
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http://www.freedesktop.org/wiki/Standards_2fwm_2dspec
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Copyright (C) Peter Astrand <astrand@cendio.se> 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <X11/Xutil.h>
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#include "rdesktop.h"
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#define _NET_WM_STATE_REMOVE 0 /* remove/unset property */
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#define _NET_WM_STATE_ADD 1 /* add/set property */
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#define _NET_WM_STATE_TOGGLE 2 /* toggle property */
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/*
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Get window property value (32 bit format)
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Returns zero on success, -1 on error
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*/
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static int
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get_property_value(RDPCLIENT * This, Window wnd, char *propname, long max_length,
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unsigned long *nitems_return, unsigned char **prop_return, int nowarn)
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{
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int result;
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Atom property;
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Atom actual_type_return;
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int actual_format_return;
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unsigned long bytes_after_return;
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property = XInternAtom(This->display, propname, True);
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if (property == None)
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{
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fprintf(stderr, "Atom %s does not exist\n", propname);
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return (-1);
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}
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result = XGetWindowProperty(This->display, wnd, property, 0, /* long_offset */
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max_length, /* long_length */
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False, /* delete */
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AnyPropertyType, /* req_type */
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&actual_type_return,
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&actual_format_return,
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nitems_return, &bytes_after_return, prop_return);
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if (result != Success)
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{
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fprintf(stderr, "XGetWindowProperty failed\n");
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return (-1);
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}
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if (actual_type_return == None || actual_format_return == 0)
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{
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if (!nowarn)
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fprintf(stderr, "Window is missing property %s\n", propname);
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return (-1);
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}
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if (bytes_after_return)
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{
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fprintf(stderr, "%s is too big for me\n", propname);
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return (-1);
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}
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if (actual_format_return != 32)
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{
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fprintf(stderr, "%s has bad format\n", propname);
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return (-1);
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}
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return (0);
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}
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/*
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Get current desktop number
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Returns -1 on error
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*/
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static int
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get_current_desktop(RDPCLIENT * This)
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{
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unsigned long nitems_return;
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unsigned char *prop_return;
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int current_desktop;
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if (get_property_value
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(This, DefaultRootWindow(This->display), "_NET_CURRENT_DESKTOP", 1, &nitems_return,
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&prop_return, 0) < 0)
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return (-1);
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if (nitems_return != 1)
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{
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fprintf(stderr, "_NET_CURRENT_DESKTOP has bad length\n");
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return (-1);
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}
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current_desktop = *prop_return;
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XFree(prop_return);
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return current_desktop;
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}
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/*
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Get workarea geometry
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Returns zero on success, -1 on error
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*/
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int
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get_current_workarea(RDPCLIENT * This, uint32 * x, uint32 * y, uint32 * width, uint32 * height)
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{
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int current_desktop;
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unsigned long nitems_return;
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unsigned char *prop_return;
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uint32 *return_words;
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const uint32 net_workarea_x_offset = 0;
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const uint32 net_workarea_y_offset = 1;
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const uint32 net_workarea_width_offset = 2;
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const uint32 net_workarea_height_offset = 3;
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const uint32 max_prop_length = 32 * 4; /* Max 32 desktops */
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if (get_property_value
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(This, DefaultRootWindow(This->display), "_NET_WORKAREA", max_prop_length, &nitems_return,
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&prop_return, 0) < 0)
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return (-1);
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if (nitems_return % 4)
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{
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fprintf(stderr, "_NET_WORKAREA has odd length\n");
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return (-1);
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}
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current_desktop = get_current_desktop(This);
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if (current_desktop < 0)
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return -1;
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return_words = (uint32 *) prop_return;
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*x = return_words[current_desktop * 4 + net_workarea_x_offset];
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*y = return_words[current_desktop * 4 + net_workarea_y_offset];
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*width = return_words[current_desktop * 4 + net_workarea_width_offset];
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*height = return_words[current_desktop * 4 + net_workarea_height_offset];
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XFree(prop_return);
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return (0);
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}
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void
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ewmh_init(RDPCLIENT * This)
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{
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/* FIXME: Use XInternAtoms */
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This->ewmhints.state_maximized_vert_atom =
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XInternAtom(This->display, "_NET_WM_STATE_MAXIMIZED_VERT", False);
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This->ewmhints.state_maximized_horz_atom =
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XInternAtom(This->display, "_NET_WM_STATE_MAXIMIZED_HORZ", False);
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This->ewmhints.state_hidden_atom = XInternAtom(This->display, "_NET_WM_STATE_HIDDEN", False);
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This->ewmhints.state_skip_taskbar_atom =
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XInternAtom(This->display, "_NET_WM_STATE_SKIP_TASKBAR", False);
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This->ewmhints.state_skip_pager_atom = XInternAtom(This->display, "_NET_WM_STATE_SKIP_PAGER", False);
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This->ewmhints.state_modal_atom = XInternAtom(This->display, "_NET_WM_STATE_MODAL", False);
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This->net_wm_state_atom = XInternAtom(This->display, "_NET_WM_STATE", False);
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This->net_wm_desktop_atom = XInternAtom(This->display, "_NET_WM_DESKTOP", False);
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This->ewmhints.name_atom = XInternAtom(This->display, "_NET_WM_NAME", False);
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This->ewmhints.utf8_string_atom = XInternAtom(This->display, "UTF8_STRING", False);
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}
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/*
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Get the window state: normal/minimized/maximized.
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*/
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#ifndef MAKE_PROTO
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int
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ewmh_get_window_state(RDPCLIENT * This, Window w)
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{
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unsigned long nitems_return;
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unsigned char *prop_return;
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uint32 *return_words;
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unsigned long item;
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BOOL maximized_vert, maximized_horz, hidden;
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maximized_vert = maximized_horz = hidden = False;
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if (get_property_value(This, w, "_NET_WM_STATE", 64, &nitems_return, &prop_return, 0) < 0)
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return SEAMLESSRDP_NORMAL;
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return_words = (uint32 *) prop_return;
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for (item = 0; item < nitems_return; item++)
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{
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if (return_words[item] == This->ewmhints.state_maximized_vert_atom)
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maximized_vert = True;
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if (return_words[item] == This->ewmhints.state_maximized_horz_atom)
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maximized_horz = True;
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if (return_words[item] == This->ewmhints.state_hidden_atom)
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hidden = True;
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}
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XFree(prop_return);
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if (maximized_vert && maximized_horz)
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return SEAMLESSRDP_MAXIMIZED;
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else if (hidden)
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return SEAMLESSRDP_MINIMIZED;
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else
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return SEAMLESSRDP_NORMAL;
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}
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static int
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ewmh_modify_state(RDPCLIENT * This, Window wnd, int add, Atom atom1, Atom atom2)
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{
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Status status;
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XEvent xevent;
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int result;
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unsigned long nitems;
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unsigned char *props;
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uint32 state = WithdrawnState;
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/* The spec states that the window manager must respect any
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_NET_WM_STATE attributes on a withdrawn window. In order words, we
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modify the attributes directly for withdrawn windows and ask the WM
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to do it for active windows. */
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result = get_property_value(This, wnd, "WM_STATE", 64, &nitems, &props, 1);
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if ((result >= 0) && nitems)
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{
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state = *(uint32 *) props;
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XFree(props);
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}
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if (state == WithdrawnState)
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{
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if (add)
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{
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Atom atoms[2];
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atoms[0] = atom1;
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nitems = 1;
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if (atom2)
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{
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atoms[1] = atom2;
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nitems = 2;
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}
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XChangeProperty(This->display, wnd, This->net_wm_state_atom, XA_ATOM,
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32, PropModeAppend, (unsigned char *) atoms, nitems);
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}
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else
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{
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Atom *atoms;
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int i;
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if (get_property_value(This, wnd, "_NET_WM_STATE", 64, &nitems, &props, 1) < 0)
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return 0;
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atoms = (Atom *) props;
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for (i = 0; i < nitems; i++)
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{
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if ((atoms[i] == atom1) || (atom2 && (atoms[i] == atom2)))
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{
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if (i != (nitems - 1))
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memmove(&atoms[i], &atoms[i + 1],
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sizeof(Atom) * (nitems - i - 1));
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nitems--;
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i--;
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}
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}
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XChangeProperty(This->display, wnd, This->net_wm_state_atom, XA_ATOM,
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32, PropModeReplace, (unsigned char *) atoms, nitems);
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XFree(props);
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}
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return 0;
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}
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xevent.type = ClientMessage;
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xevent.xclient.window = wnd;
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xevent.xclient.message_type = This->net_wm_state_atom;
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xevent.xclient.format = 32;
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if (add)
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xevent.xclient.data.l[0] = _NET_WM_STATE_ADD;
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else
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xevent.xclient.data.l[0] = _NET_WM_STATE_REMOVE;
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xevent.xclient.data.l[1] = atom1;
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xevent.xclient.data.l[2] = atom2;
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xevent.xclient.data.l[3] = 0;
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xevent.xclient.data.l[4] = 0;
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status = XSendEvent(This->display, DefaultRootWindow(This->display), False,
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SubstructureNotifyMask | SubstructureRedirectMask, &xevent);
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if (!status)
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return -1;
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return 0;
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}
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/*
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Set the window state: normal/minimized/maximized.
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Returns -1 on failure.
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*/
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int
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ewmh_change_state(RDPCLIENT * This, Window wnd, int state)
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{
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/*
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* Deal with the max atoms
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*/
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if (state == SEAMLESSRDP_MAXIMIZED)
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{
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if (ewmh_modify_state
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(This, wnd, 1, This->ewmhints.state_maximized_vert_atom,
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This->ewmhints.state_maximized_horz_atom) < 0)
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return -1;
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}
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else
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{
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if (ewmh_modify_state
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(This, wnd, 0, This->ewmhints.state_maximized_vert_atom,
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This->ewmhints.state_maximized_horz_atom) < 0)
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return -1;
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}
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return 0;
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}
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int
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ewmh_get_window_desktop(RDPCLIENT * This, Window wnd)
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{
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unsigned long nitems_return;
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unsigned char *prop_return;
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int desktop;
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if (get_property_value(This, wnd, "_NET_WM_DESKTOP", 1, &nitems_return, &prop_return, 0) < 0)
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return (-1);
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if (nitems_return != 1)
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{
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fprintf(stderr, "_NET_WM_DESKTOP has bad length\n");
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return (-1);
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}
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desktop = *prop_return;
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XFree(prop_return);
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return desktop;
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}
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int
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ewmh_move_to_desktop(RDPCLIENT * This, Window wnd, unsigned int desktop)
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{
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Status status;
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XEvent xevent;
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xevent.type = ClientMessage;
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xevent.xclient.window = wnd;
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xevent.xclient.message_type = This->net_wm_desktop_atom;
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xevent.xclient.format = 32;
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xevent.xclient.data.l[0] = desktop;
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xevent.xclient.data.l[1] = 0;
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xevent.xclient.data.l[2] = 0;
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xevent.xclient.data.l[3] = 0;
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xevent.xclient.data.l[4] = 0;
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status = XSendEvent(This->display, DefaultRootWindow(This->display), False,
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SubstructureNotifyMask | SubstructureRedirectMask, &xevent);
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if (!status)
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return -1;
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return 0;
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}
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void
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ewmh_set_wm_name(RDPCLIENT * This, Window wnd, const char *title)
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{
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int len;
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len = strlen(title);
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XChangeProperty(This->display, wnd, This->ewmhints.name_atom, This->ewmhints.utf8_string_atom,
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8, PropModeReplace, (unsigned char *) title, len);
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}
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int
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ewmh_set_window_popup(RDPCLIENT * This, Window wnd)
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{
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if (ewmh_modify_state
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(This, wnd, 1, This->ewmhints.state_skip_taskbar_atom, This->ewmhints.state_skip_pager_atom) < 0)
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return -1;
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return 0;
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}
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int
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ewmh_set_window_modal(RDPCLIENT * This, Window wnd)
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{
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if (ewmh_modify_state(This, wnd, 1, This->ewmhints.state_modal_atom, 0) < 0)
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return -1;
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return 0;
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}
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#endif /* MAKE_PROTO */
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#if 0
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/* FIXME: _NET_MOVERESIZE_WINDOW is for pagers, not for
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applications. We should implement _NET_WM_MOVERESIZE instead */
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int
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ewmh_net_moveresize_window(RDPCLIENT * This, Window wnd, int x, int y, int width, int height)
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{
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Status status;
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XEvent xevent;
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Atom moveresize;
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moveresize = XInternAtom(This->display, "_NET_MOVERESIZE_WINDOW", False);
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if (!moveresize)
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{
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return -1;
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}
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xevent.type = ClientMessage;
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xevent.xclient.window = wnd;
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xevent.xclient.message_type = moveresize;
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xevent.xclient.format = 32;
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xevent.xclient.data.l[0] = StaticGravity | (1 << 8) | (1 << 9) | (1 << 10) | (1 << 11);
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xevent.xclient.data.l[1] = x;
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xevent.xclient.data.l[2] = y;
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xevent.xclient.data.l[3] = width;
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xevent.xclient.data.l[4] = height;
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status = XSendEvent(This->display, DefaultRootWindow(This->display), False,
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SubstructureNotifyMask | SubstructureRedirectMask, &xevent);
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if (!status)
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return -1;
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return 0;
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}
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#endif
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