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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include "FWS.hxx"
static Atom fwsIconAtom;
static Atom FWS_CLIENT;
static Atom FWS_COMM_WINDOW;
static Atom FWS_PROTOCOLS;
static Atom FWS_STACK_UNDER;
static Atom FWS_PARK_ICONS;
static Atom FWS_PASS_ALL_INPUT;
static Atom FWS_PASSES_INPUT;
static Atom FWS_HANDLES_FOCUS;
static Atom FWS_REGISTER_WINDOW;
static Atom FWS_STATE_CHANGE;
static Atom FWS_UNSEEN_STATE;
static Atom FWS_NORMAL_STATE;
static Atom WM_PROTOCOLS;
static Atom WM_CHANGE_STATE;
static Bool fwsStackUnder;
static Bool fwsParkIcons;
static Bool fwsPassesInput;
static Bool fwsHandlesFocus;
static Window fwsCommWindow;
/*************************************<->***********************************
*
* WMSupportsFWS() -
*
* Initialize our atoms and determine if the current window manager is
* providing FWS extension support.
*
*************************************<->***********************************/
Bool
WMSupportsFWS (Display *display, int screen)
{
unsigned int i;
Atom protocol;
Atom propType;
int propFormat;
unsigned long propItems;
unsigned long propBytesAfter;
unsigned char *propData;
char propName[64];
FWS_CLIENT = XInternAtom(display, "_SUN_FWS_CLIENT", False);
FWS_COMM_WINDOW = XInternAtom(display, "_SUN_FWS_COMM_WINDOW", False);
FWS_PROTOCOLS = XInternAtom(display, "_SUN_FWS_PROTOCOLS", False);
FWS_STACK_UNDER = XInternAtom(display, "_SUN_FWS_STACK_UNDER", False);
FWS_PARK_ICONS = XInternAtom(display, "_SUN_FWS_PARK_ICONS", False);
FWS_PASS_ALL_INPUT = XInternAtom(display, "_SUN_FWS_PASS_ALL_INPUT", False);
FWS_PASSES_INPUT = XInternAtom(display, "_SUN_FWS_PASSES_INPUT", False);
FWS_HANDLES_FOCUS = XInternAtom(display, "_SUN_FWS_HANDLES_FOCUS", False);
FWS_REGISTER_WINDOW= XInternAtom(display, "_SUN_FWS_REGISTER_WINDOW",False);
FWS_STATE_CHANGE = XInternAtom(display, "_SUN_FWS_STATE_CHANGE", False);
FWS_UNSEEN_STATE = XInternAtom(display, "_SUN_FWS_UNSEEN_STATE", False);
FWS_NORMAL_STATE = XInternAtom(display, "_SUN_FWS_NORMAL_STATE", False);
WM_PROTOCOLS = XInternAtom(display, "WM_PROTOCOLS", False);
WM_CHANGE_STATE = XInternAtom(display, "WM_CHANGE_STATE", False);
snprintf (propName, sizeof(propName), "_SUN_FWS_NEXT_ICON_%d", screen);
fwsIconAtom = XInternAtom(display, propName, False);
if (XGetWindowProperty (display, DefaultRootWindow (display),
FWS_COMM_WINDOW, 0, 1,
False, AnyPropertyType, &propType,
&propFormat, &propItems,
&propBytesAfter, &propData) != Success)
return False;
if (propFormat != 32 ||
propItems != 1 ||
propBytesAfter != 0)
{
#if OSL_DEBUG_LEVEL > 1
fprintf (stderr, "Bad FWS_COMM_WINDOW property on root window.\n");
#endif
XFree (propData);
return False;
}
fwsCommWindow = *(Window *) propData;
#if OSL_DEBUG_LEVEL > 1
fprintf (stderr, "Using fwsCommWindow = 0x%lx.\n", fwsCommWindow);
#endif
XFree (propData);
if (XGetWindowProperty (display, DefaultRootWindow (display),
FWS_PROTOCOLS, 0, 10,
False, AnyPropertyType, &propType,
&propFormat, &propItems,
&propBytesAfter, &propData) != Success)
{
return False;
}
if (propFormat != 32 ||
propBytesAfter != 0)
{
#if OSL_DEBUG_LEVEL > 1
fprintf (stderr, "Bad FWS_PROTOCOLS property on root window.\n");
#endif
XFree (propData);
return False;
}
for (i = 0; i < propItems; ++i)
{
protocol = ((Atom *) propData)[i];
if (protocol == FWS_STACK_UNDER)
{
fwsStackUnder = True;
#if OSL_DEBUG_LEVEL > 1
fprintf (stderr, "Using fwsStackUnder.\n");
#endif
}
else
if (protocol == FWS_PARK_ICONS)
{
fwsParkIcons = True;
#if OSL_DEBUG_LEVEL > 1
fprintf (stderr, "Using fwsParkIcons.\n");
#endif
}
else
if (protocol == FWS_PASSES_INPUT)
{
fwsPassesInput = True;
#if OSL_DEBUG_LEVEL > 1
fprintf (stderr, "Using fwsPassesInput.\n");
#endif
}
else
if (protocol == FWS_HANDLES_FOCUS)
{
fwsHandlesFocus = True;
#if OSL_DEBUG_LEVEL > 1
fprintf (stderr, "Using fwsHandlesFocus.\n");
#endif
}
}
XFree (propData);
return True;
}
/*************************************<->***********************************
*
* newHandler() -
*
* Handle X errors (temporarily) to record the occurrence of BadWindow
* errors without crashing. Used to detect the FWS_COMM_WINDOW root window
* property containing an old or obsolete window id.
*
*************************************<->***********************************/
extern "C" {
static Bool badWindowFound;
static int (* oldHandler) (Display *, XErrorEvent *);
static int
newHandler (Display *display, XErrorEvent *xerror)
{
if (xerror->error_code != BadWindow)
(*oldHandler)(display, xerror);
else
badWindowFound = True;
return 0;
}
}
/*************************************<->***********************************
*
* RegisterFwsWindow() -
*
* Send a client message to the FWS_COMM_WINDOW indicating the existance
* of a new FWS client window. Be careful to avoid BadWindow errors on
* the XSendEvent in case the FWS_COMM_WINDOW root window property had
* old/obsolete junk in it.
*
*************************************<->***********************************/
Bool
RegisterFwsWindow (Display *display, Window window)
{
XClientMessageEvent msg;
msg.type = ClientMessage;
msg.window = fwsCommWindow;
msg.message_type = FWS_REGISTER_WINDOW;
msg.format = 32;
msg.data.l[0] = window;
XSync (display, False);
badWindowFound = False;
oldHandler = XSetErrorHandler (newHandler);
XSendEvent (display, fwsCommWindow, False, NoEventMask,
(XEvent *) &msg);
XSync (display, False);
XSetErrorHandler (oldHandler);
#if OSL_DEBUG_LEVEL > 1
if (badWindowFound)
fprintf (stderr, "No FWS client window to register with.\n");
#endif
return !badWindowFound;
}
/*************************************<->***********************************
*
* AddFwsProtocols -
*
* Add the FWS protocol atoms to the WMProtocols property for the window.
*
*************************************<->***********************************/
void
AddFwsProtocols (Display *display, Window window)
{
#define MAX_FWS_PROTOS 10
Atom fwsProtocols[ MAX_FWS_PROTOS ];
int nProtos = 0;
fwsProtocols[ nProtos++ ] = FWS_CLIENT;
fwsProtocols[ nProtos++ ] = FWS_STACK_UNDER;
fwsProtocols[ nProtos++ ] = FWS_STATE_CHANGE;
fwsProtocols[ nProtos++ ] = FWS_PASS_ALL_INPUT;
XChangeProperty (display, window, WM_PROTOCOLS,
XA_ATOM, 32, PropModeAppend,
(unsigned char *) fwsProtocols, nProtos);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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