ojluni/src/main/java/sun/awt/X11/XlibUtil.java - platform/libcore.git - Git at Google

 /*
  * Copyright (c) 2006, 2008, 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) &&
                     ((XToolkit.saved_error == null) ||
                      (XToolkit.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
         {
             XToolkit.WITH_XERROR_HANDLER(XErrorHandler.IgnoreBadWindowHandler.getInstance());
             int status = XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(),
                                                           window, wattr.pData);
             XToolkit.RESTORE_XERROR_HANDLER();
             if ((status != 0) &&
                 ((XToolkit.saved_error == null) ||
                  (XToolkit.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();
     }

 }
	/*
	* Copyright (c) 2006, 2008, 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) &&
	((XToolkit.saved_error == null) \|\|
	(XToolkit.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
	{
	XToolkit.WITH_XERROR_HANDLER(XErrorHandler.IgnoreBadWindowHandler.getInstance());
	int status = XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(),
	window, wattr.pData);
	XToolkit.RESTORE_XERROR_HANDLER();
	if ((status != 0) &&
	((XToolkit.saved_error == null) \|\|
	(XToolkit.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();
	}

	}