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/* -*- c-basic-offset: 8 -*- |
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rdesktop: A Remote Desktop Protocol client. |
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|
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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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|
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Copyright (C) Peter Astrand <astrand@cendio.se> 2005 |
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|
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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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|
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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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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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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 "rdesktop.h" |
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|
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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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extern Display *g_display; |
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|
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static Atom g_net_wm_state_maximized_vert_atom, g_net_wm_state_maximized_horz_atom, |
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g_net_wm_state_hidden_atom, g_net_wm_name_atom, g_utf8_string_atom, |
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g_net_wm_state_skip_taskbar_atom, g_net_wm_state_skip_pager_atom; |
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|
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Atom g_net_wm_state_atom, g_net_wm_desktop_atom; |
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|
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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(Window wnd, char *propname, long max_length, |
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unsigned long *nitems_return, unsigned char **prop_return) |
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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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|
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property = XInternAtom(g_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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|
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result = XGetWindowProperty(g_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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|
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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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|
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if (actual_type_return == None || actual_format_return == 0) |
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{ |
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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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|
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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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|
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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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|
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return (0); |
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} |
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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(void) |
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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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|
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if (get_property_value |
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(DefaultRootWindow(g_display), "_NET_CURRENT_DESKTOP", 1, &nitems_return, |
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&prop_return) < 0) |
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return (-1); |
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|
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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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|
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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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/* |
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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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|
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int |
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get_current_workarea(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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|
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if (get_property_value |
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(DefaultRootWindow(g_display), "_NET_WORKAREA", max_prop_length, &nitems_return, |
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&prop_return) < 0) |
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return (-1); |
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|
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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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|
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current_desktop = get_current_desktop(); |
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|
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if (current_desktop < 0) |
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return -1; |
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|
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return_words = (uint32 *) prop_return; |
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|
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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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|
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XFree(prop_return); |
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|
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return (0); |
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|
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} |
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|
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|
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|
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void |
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ewmh_init() |
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{ |
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/* FIXME: Use XInternAtoms */ |
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g_net_wm_state_maximized_vert_atom = |
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XInternAtom(g_display, "_NET_WM_STATE_MAXIMIZED_VERT", False); |
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g_net_wm_state_maximized_horz_atom = |
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XInternAtom(g_display, "_NET_WM_STATE_MAXIMIZED_HORZ", False); |
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g_net_wm_state_hidden_atom = XInternAtom(g_display, "_NET_WM_STATE_HIDDEN", False); |
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g_net_wm_state_skip_taskbar_atom = |
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XInternAtom(g_display, "_NET_WM_STATE_SKIP_TASKBAR", False); |
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g_net_wm_state_skip_pager_atom = XInternAtom(g_display, "_NET_WM_STATE_SKIP_PAGER", False); |
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g_net_wm_state_atom = XInternAtom(g_display, "_NET_WM_STATE", False); |
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g_net_wm_desktop_atom = XInternAtom(g_display, "_NET_WM_DESKTOP", False); |
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g_net_wm_name_atom = XInternAtom(g_display, "_NET_WM_NAME", False); |
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g_utf8_string_atom = XInternAtom(g_display, "UTF8_STRING", False); |
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} |
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|
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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(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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|
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maximized_vert = maximized_horz = hidden = False; |
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|
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if (get_property_value(w, "_NET_WM_STATE", 64, &nitems_return, &prop_return) < 0) |
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return SEAMLESSRDP_NORMAL; |
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|
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return_words = (uint32 *) prop_return; |
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|
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for (item = 0; item < nitems_return; item++) |
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{ |
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if (return_words[item] == g_net_wm_state_maximized_vert_atom) |
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maximized_vert = True; |
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if (return_words[item] == g_net_wm_state_maximized_horz_atom) |
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maximized_horz = True; |
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if (return_words[item] == g_net_wm_state_hidden_atom) |
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hidden = True; |
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} |
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|
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XFree(prop_return); |
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|
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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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|
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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(Window wnd, int state) |
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{ |
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Status status; |
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XEvent xevent; |
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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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xevent.type = ClientMessage; |
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xevent.xclient.window = wnd; |
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xevent.xclient.message_type = g_net_wm_state_atom; |
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xevent.xclient.format = 32; |
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if (state == SEAMLESSRDP_MAXIMIZED) |
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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] = g_net_wm_state_maximized_vert_atom; |
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xevent.xclient.data.l[2] = g_net_wm_state_maximized_horz_atom; |
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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(g_display, DefaultRootWindow(g_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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|
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return 0; |
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} |
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|
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|
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int |
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ewmh_get_window_desktop(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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|
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if (get_property_value(wnd, "_NET_WM_DESKTOP", 1, &nitems_return, &prop_return) < 0) |
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return (-1); |
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|
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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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|
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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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|
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|
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int |
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ewmh_move_to_desktop(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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|
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xevent.type = ClientMessage; |
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xevent.xclient.window = wnd; |
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xevent.xclient.message_type = g_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(g_display, DefaultRootWindow(g_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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|
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return 0; |
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} |
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|
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void |
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ewmh_set_wm_name(Window wnd, const char *title) |
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{ |
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int len; |
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|
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len = strlen(title); |
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XChangeProperty(g_display, wnd, g_net_wm_name_atom, g_utf8_string_atom, |
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8, PropModeReplace, (unsigned char *) title, len); |
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} |
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|
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|
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void |
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ewmh_set_window_popup(Window wnd) |
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{ |
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Atom atoms[2] = { g_net_wm_state_skip_taskbar_atom, g_net_wm_state_skip_pager_atom }; |
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|
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XChangeProperty(g_display, wnd, g_net_wm_state_atom, XA_ATOM, 32, PropModeAppend, atoms, 2); |
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} |
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|
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#endif /* MAKE_PROTO */ |
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|
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|
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#if 0 |
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|
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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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|
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int |
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ewmh_net_moveresize_window(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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|
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moveresize = XInternAtom(g_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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|
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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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|
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status = XSendEvent(g_display, DefaultRootWindow(g_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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#endif |
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