19f88c925a
git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/rdesktop/trunk@1553 423420c4-83ab-492f-b58f-81f9feb106b5
584 lines
14 KiB
C
584 lines
14 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 2005 Peter Astrand <astrand@cendio.se> for Cendio AB
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Copyright 2007 Pierre Ossman <ossman@cendio.se> for Cendio AB
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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 3 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
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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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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extern Display *g_display;
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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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g_net_wm_state_modal_atom, g_net_wm_icon_atom, g_net_wm_state_above_atom;
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Atom g_net_wm_state_atom, g_net_wm_desktop_atom;
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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, 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(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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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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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(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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if (get_property_value
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(DefaultRootWindow(g_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(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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long *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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(DefaultRootWindow(g_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();
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if (current_desktop < 0)
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return -1;
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return_words = (long *) 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()
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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_modal_atom = XInternAtom(g_display, "_NET_WM_STATE_MODAL", False);
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g_net_wm_state_above_atom = XInternAtom(g_display, "_NET_WM_STATE_ABOVE", 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_net_wm_icon_atom = XInternAtom(g_display, "_NET_WM_ICON", 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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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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RD_BOOL maximized_vert, maximized_horz, hidden;
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maximized_vert = maximized_horz = hidden = False;
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if (get_property_value(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] == 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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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(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(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(g_display, wnd, g_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(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(g_display, wnd, g_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 = g_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(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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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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/*
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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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(wnd, 1, g_net_wm_state_maximized_vert_atom,
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g_net_wm_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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(wnd, 0, g_net_wm_state_maximized_vert_atom,
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g_net_wm_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(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(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(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 = 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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return 0;
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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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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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int
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ewmh_set_window_popup(Window wnd)
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{
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if (ewmh_modify_state
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(wnd, 1, g_net_wm_state_skip_taskbar_atom, g_net_wm_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(Window wnd)
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{
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if (ewmh_modify_state(wnd, 1, g_net_wm_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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void
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ewmh_set_icon(Window wnd, int width, int height, const char *rgba_data)
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{
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unsigned long nitems, i;
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unsigned char *props;
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unsigned long *cur_set, *new_set;
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unsigned long *icon;
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cur_set = NULL;
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new_set = NULL;
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if (get_property_value(wnd, "_NET_WM_ICON", 10000, &nitems, &props, 1) >= 0)
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{
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cur_set = (unsigned long *) props;
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for (i = 0; i < nitems;)
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{
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if (cur_set[i] == width && cur_set[i + 1] == height)
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break;
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i += 2 + cur_set[i] * cur_set[i + 1];
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}
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if (i != nitems)
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icon = cur_set + i;
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else
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{
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new_set = xmalloc((nitems + width * height + 2) * sizeof(unsigned long));
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memcpy(new_set, cur_set, nitems * sizeof(unsigned long));
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icon = new_set + nitems;
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nitems += width * height + 2;
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}
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}
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else
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{
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new_set = xmalloc((width * height + 2) * sizeof(unsigned long));
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icon = new_set;
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nitems = width * height + 2;
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}
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icon[0] = width;
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icon[1] = height;
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/* Convert RGBA -> ARGB */
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for (i = 0; i < width * height; i++)
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{
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icon[i + 2] =
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rgba_data[i * 4 + 3] << 24 |
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((rgba_data[i * 4 + 0] << 16) & 0x00FF0000) |
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((rgba_data[i * 4 + 1] << 8) & 0x0000FF00) |
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((rgba_data[i * 4 + 2] << 0) & 0x000000FF);
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}
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XChangeProperty(g_display, wnd, g_net_wm_icon_atom, XA_CARDINAL, 32,
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PropModeReplace, (unsigned char *) (new_set ? new_set : cur_set), nitems);
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if (cur_set)
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XFree(cur_set);
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if (new_set)
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xfree(new_set);
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}
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void
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ewmh_del_icon(Window wnd, int width, int height)
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{
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unsigned long nitems, i, icon_size;
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unsigned char *props;
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unsigned long *cur_set, *new_set;
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cur_set = NULL;
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new_set = NULL;
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if (get_property_value(wnd, "_NET_WM_ICON", 10000, &nitems, &props, 1) < 0)
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return;
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cur_set = (unsigned long *) props;
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for (i = 0; i < nitems;)
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{
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if (cur_set[i] == width && cur_set[i + 1] == height)
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break;
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i += 2 + cur_set[i] * cur_set[i + 1];
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}
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if (i == nitems)
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goto out;
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icon_size = width * height + 2;
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new_set = xmalloc((nitems - icon_size) * sizeof(unsigned long));
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|
|
if (i != 0)
|
|
memcpy(new_set, cur_set, i * sizeof(unsigned long));
|
|
if (i != nitems - icon_size)
|
|
memcpy(new_set + i * sizeof(unsigned long),
|
|
cur_set + i * sizeof(unsigned long) + icon_size, nitems - icon_size);
|
|
|
|
nitems -= icon_size;
|
|
|
|
XChangeProperty(g_display, wnd, g_net_wm_icon_atom, XA_CARDINAL, 32,
|
|
PropModeReplace, (unsigned char *) new_set, nitems);
|
|
|
|
xfree(new_set);
|
|
|
|
out:
|
|
XFree(cur_set);
|
|
}
|
|
|
|
int
|
|
ewmh_set_window_above(Window wnd)
|
|
{
|
|
if (ewmh_modify_state(wnd, 1, g_net_wm_state_above_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(Window wnd, int x, int y, int width, int height)
|
|
{
|
|
Status status;
|
|
XEvent xevent;
|
|
Atom moveresize;
|
|
|
|
moveresize = XInternAtom(g_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(g_display, DefaultRootWindow(g_display), False,
|
|
SubstructureNotifyMask | SubstructureRedirectMask, &xevent);
|
|
if (!status)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
#endif
|