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/*
* Copyright (C) 2007 OpenedHand Ltd
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
*/
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <string.h>
#include <stdlib.h>
#include "xutil.h"
char *
x_strerror (int code)
{
#define BUFFER_SIZE 255
char *s;
s = g_malloc (BUFFER_SIZE);
XGetErrorText (gdk_x11_get_default_xdisplay (), code, s, BUFFER_SIZE);
return s;
}
static void
net_workarea_changed (WorkAreaFunc cb, GdkWindow *window)
{
if (!GDK_IS_X11_DISPLAY (gdk_display_get_default()))
return;
Atom real_type;
int result, xres, real_format;
unsigned long items_read, items_left;
long *coords;
const gchar atom_name[] = "_NET_WORKAREA";
Atom workarea_atom = gdk_x11_get_xatom_by_name (atom_name);
gdk_error_trap_push ();
result = XGetWindowProperty (gdk_x11_get_default_xdisplay (), GDK_ROOT_WINDOW (),
workarea_atom, 0L, 4L, False,
XA_CARDINAL, &real_type, &real_format,
&items_read, &items_left,
(unsigned char **) (void*)&coords);
if ((xres = gdk_error_trap_pop ()) != 0) {
char *s = x_strerror (xres);
g_warning ("Cannot get property: %s", s);
g_free (s);
return;
}
if (result == Success && items_read) {
/* Note that this only considers the first workspace, and if used with
multi-desktop systems this may produce incorrect results. */
cb (coords[0], coords[1], coords[2], coords[3]);
XFree(coords);
}
}
static GdkFilterReturn
workarea_property_filter (GdkXEvent *gdk_xevent, GdkEvent *event, gpointer data)
{
XEvent *xevent = gdk_xevent;
WorkAreaFunc cb = data;
switch (xevent->type) {
case PropertyNotify:
if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name ("_NET_WORKAREA"))
net_workarea_changed (cb, event->any.window);
break;
default:
break;
}
return GDK_FILTER_CONTINUE;
}
void
x_monitor_workarea (GdkScreen *screen, WorkAreaFunc cb)
{
GdkWindow *root;
root = gdk_screen_get_root_window (screen);
gdk_window_set_events (root,
gdk_window_get_events (root) |
GDK_PROPERTY_CHANGE_MASK);
if (!GDK_IS_X11_DISPLAY (gdk_display_get_default()))
gdk_window_add_filter (root, workarea_property_filter, cb);
net_workarea_changed (cb, root);
}
void
x_window_activate (Window win, guint32 timestamp)
{
/* Note that this doesn't work if the WM doesn't support _NET_ACTIVE_WINDOW.
However, that is pretty much given really. */
if (!GDK_IS_X11_DISPLAY (gdk_display_get_default()))
return;
Atom atom_net_active = gdk_x11_get_xatom_by_name ("_NET_ACTIVE_WINDOW");
XClientMessageEvent ev;
memset (&ev, 0, sizeof ev);
ev.type = ClientMessage;
ev.window = win;
ev.message_type = atom_net_active;
ev.format = 32;
ev.data.l[0] = 2; /* 0: unknown, 1: application; 2: pager */
ev.data.l[1] = timestamp;
ev.data.l[2] = None; /* Currently active window */
ev.data.l[3] = 0;
ev.data.l[4] = 0;
XSendEvent (gdk_x11_get_default_xdisplay (), GDK_ROOT_WINDOW (),
False, SubstructureRedirectMask, (XEvent*)&ev);
}
#define RETURN_NONE_IF_NULL(p) if ((p) == '\0') return None;
Window
mb_single_instance_get_window (const char *bin_name)
{
if (!GDK_IS_X11_DISPLAY (gdk_display_get_default()))
return None;
Atom atom_exec_map = gdk_x11_get_xatom_by_name ("_MB_CLIENT_EXEC_MAP");
Atom type;
int format;
unsigned char *data = NULL;
unsigned long n_items, bytes_after;
int result;
unsigned char *p, *key = NULL, *value = NULL;
Window win_found;
result = XGetWindowProperty (gdk_x11_get_default_xdisplay (), GDK_ROOT_WINDOW (),
atom_exec_map,
0, 10000L,
False, XA_STRING,
&type, &format, &n_items,
&bytes_after, (unsigned char **) &data);
if (result != Success || data == NULL || n_items == 0) {
if (data)
XFree (data);
return None;
}
p = data;
while (*p != '\0') {
key = p;
while (*p != '=' && *p != '\0') p++;
RETURN_NONE_IF_NULL(*p);
*p = '\0'; p++;
RETURN_NONE_IF_NULL(*p);
value = p;
while (*p != '|' && *p != '\0') p++;
RETURN_NONE_IF_NULL(*p);
*p = '\0';
if (!strcmp ((char*) key, (char*) bin_name)) {
win_found = atoi ((char*) value); /* XXX should check window ID
actually exists */
XFree (data);
return ((win_found > 0) ? win_found : None);
}
p++;
}
XFree (data);
return None;
}
gboolean
mb_single_instance_is_starting (const char *bin_name)
{
if (!GDK_IS_X11_DISPLAY (gdk_display_get_default()))
return FALSE;
Atom atom_exec_map = gdk_x11_get_xatom_by_name ("_MB_CLIENT_STARTUP_LIST");
Atom type;
int format;
unsigned char *data = NULL;
unsigned long n_items, bytes_after;
int result;
result = XGetWindowProperty (gdk_x11_get_default_xdisplay (), GDK_ROOT_WINDOW (),
atom_exec_map,
0, 10000L,
False, XA_STRING,
&type, &format, &n_items,
&bytes_after, (unsigned char **) &data);
if (result != Success || data == NULL) {
if (data)
XFree (data);
return FALSE;
}
if (strstr ((char*) data, (char*) bin_name) != NULL) {
XFree (data);
return TRUE;
}
XFree (data);
return FALSE;
}
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