/*
* Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.awt.X11;
import java.awt.Dimension;
import java.awt.GraphicsEnvironment;
import java.awt.Point;
import java.awt.Rectangle;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import sun.awt.X11GraphicsConfig;
import sun.awt.X11GraphicsDevice;
import sun.awt.X11GraphicsEnvironment;
/*
* This class is a collection of utility methods that operate
* with native windows.
*/
public class XlibUtil
{
/**
* The constructor is made private to eliminate any
* instances of this class
*/
private XlibUtil()
{
}
/**
* Xinerama-aware version of XlibWrapper.RootWindow method.
*/
public static long getRootWindow(int screenNumber)
{
XToolkit.awtLock();
try
{
X11GraphicsEnvironment x11ge = (X11GraphicsEnvironment)
GraphicsEnvironment.getLocalGraphicsEnvironment();
if (x11ge.runningXinerama())
{
// all the Xinerama windows share the same root window
return XlibWrapper.RootWindow(XToolkit.getDisplay(), 0);
}
else
{
return XlibWrapper.RootWindow(XToolkit.getDisplay(), screenNumber);
}
}
finally
{
XToolkit.awtUnlock();
}
}
/**
* Checks if the given window is a root window for the given screen
*/
static boolean isRoot(long rootCandidate, long screenNumber)
{
long root;
XToolkit.awtLock();
try
{
root = XlibWrapper.RootWindow(XToolkit.getDisplay(),
screenNumber);
}
finally
{
XToolkit.awtUnlock();
}
return root == rootCandidate;
}
/**
* Returns the bounds of the given window, in absolute coordinates
*/
static Rectangle getWindowGeometry(long window)
{
XToolkit.awtLock();
try
{
int res = XlibWrapper.XGetGeometry(XToolkit.getDisplay(),
window,
XlibWrapper.larg1, // root_return
XlibWrapper.larg2, // x_return
XlibWrapper.larg3, // y_return
XlibWrapper.larg4, // width_return
XlibWrapper.larg5, // height_return
XlibWrapper.larg6, // border_width_return
XlibWrapper.larg7); // depth_return
if (res == 0)
{
return null;
}
int x = Native.getInt(XlibWrapper.larg2);
int y = Native.getInt(XlibWrapper.larg3);
long width = Native.getUInt(XlibWrapper.larg4);
long height = Native.getUInt(XlibWrapper.larg5);
return new Rectangle(x, y, (int)width, (int)height);
}
finally
{
XToolkit.awtUnlock();
}
}
/**
* Translates the given point from one window to another. Returns
* null if the translation is failed
*/
static Point translateCoordinates(long src, long dst, Point p)
{
Point translated = null;
XToolkit.awtLock();
try
{
XTranslateCoordinates xtc =
new XTranslateCoordinates(src, dst, p.x, p.y);
try
{
int status = xtc.execute(XErrorHandler.IgnoreBadWindowHandler.getInstance());
if ((status != 0) &&
((XErrorHandlerUtil.saved_error == null) ||
(XErrorHandlerUtil.saved_error.get_error_code() == XConstants.Success)))
{
translated = new Point(xtc.get_dest_x(), xtc.get_dest_y());
}
}
finally
{
xtc.dispose();
}
}
finally
{
XToolkit.awtUnlock();
}
return translated;
}
/**
* Translates the given rectangle from one window to another.
* Returns null if the translation is failed
*/
static Rectangle translateCoordinates(long src, long dst, Rectangle r)
{
Point translatedLoc = translateCoordinates(src, dst, r.getLocation());
if (translatedLoc == null)
{
return null;
}
else
{
return new Rectangle(translatedLoc, r.getSize());
}
}
/**
* Returns the parent for the given window
*/
static long getParentWindow(long window)
{
XToolkit.awtLock();
try
{
XBaseWindow bw = XToolkit.windowToXWindow(window);
if (bw != null)
{
XBaseWindow pbw = bw.getParentWindow();
if (pbw != null)
{
return pbw.getWindow();
}
}
XQueryTree qt = new XQueryTree(window);
try
{
if (qt.execute() == 0)
{
return 0;
}
else
{
return qt.get_parent();
}
}
finally
{
qt.dispose();
}
}
finally
{
XToolkit.awtUnlock();
}
}
/**
* Returns all the children for the given window
*/
static Set<Long> getChildWindows(long window)
{
XToolkit.awtLock();
try
{
XBaseWindow bw = XToolkit.windowToXWindow(window);
if (bw != null)
{
return bw.getChildren();
}
XQueryTree xqt = new XQueryTree(window);
try
{
int status = xqt.execute();
if (status == 0)
{
return Collections.emptySet();
}
long children = xqt.get_children();
if (children == 0)
{
return Collections.emptySet();
}
int childrenCount = xqt.get_nchildren();
Set<Long> childrenSet = new HashSet<Long>(childrenCount);
for (int i = 0; i < childrenCount; i++)
{
childrenSet.add(Native.getWindow(children, i));
}
return childrenSet;
}
finally
{
xqt.dispose();
}
}
finally
{
XToolkit.awtUnlock();
}
}
/**
* Checks if the given window is a Java window and is an
* instance of XWindowPeer
*/
static boolean isXAWTToplevelWindow(long window)
{
return XToolkit.windowToXWindow(window) instanceof XWindowPeer;
}
/**
* NOTICE: Right now returns only decorated top-levels (not Window)
*/
static boolean isToplevelWindow(long window)
{
if (XToolkit.windowToXWindow(window) instanceof XDecoratedPeer)
{
return true;
}
XToolkit.awtLock();
try
{
WindowPropertyGetter wpg =
new WindowPropertyGetter(window, XWM.XA_WM_STATE, 0, 1, false,
XWM.XA_WM_STATE);
try
{
wpg.execute(XErrorHandler.IgnoreBadWindowHandler.getInstance());
if (wpg.getActualType() == XWM.XA_WM_STATE.getAtom())
{
return true;
}
}
finally
{
wpg.dispose();
}
return false;
}
finally
{
XToolkit.awtUnlock();
}
}
/**
* The same as isToplevelWindow(window), but doesn't treat
* XEmbeddedFramePeer as toplevel.
*/
static boolean isTrueToplevelWindow(long window)
{
if (XToolkit.windowToXWindow(window) instanceof XEmbeddedFramePeer)
{
return false;
}
return isToplevelWindow(window);
}
static int getWindowMapState(long window)
{
XToolkit.awtLock();
XWindowAttributes wattr = new XWindowAttributes();
try
{
XErrorHandlerUtil.WITH_XERROR_HANDLER(XErrorHandler.IgnoreBadWindowHandler.getInstance());
int status = XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(),
window, wattr.pData);
XErrorHandlerUtil.RESTORE_XERROR_HANDLER();
if ((status != 0) &&
((XErrorHandlerUtil.saved_error == null) ||
(XErrorHandlerUtil.saved_error.get_error_code() == XConstants.Success)))
{
return wattr.get_map_state();
}
}
finally
{
wattr.dispose();
XToolkit.awtUnlock();
}
return XConstants.IsUnmapped;
}
/**
* XSHAPE extension support.
*/
// The variable is declared static as the XSHAPE extension cannot
// be disabled at run-time, and thus is available all the time
// once the check is passed.
static Boolean isShapingSupported = null;
/**
* Returns whether the XSHAPE extension available
* @since 1.7
*/
static synchronized boolean isShapingSupported() {
if (isShapingSupported == null) {
XToolkit.awtLock();
try {
isShapingSupported =
XlibWrapper.XShapeQueryExtension(
XToolkit.getDisplay(),
XlibWrapper.larg1,
XlibWrapper.larg2);
} finally {
XToolkit.awtUnlock();
}
}
return isShapingSupported.booleanValue();
}
}