/*
* $Id: WindowUtils.java 3352 2009-05-25 16:37:52Z kschaefe $
*
* Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx.util;
import java.awt.Component;
import java.awt.Container;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Insets;
import java.awt.MouseInfo;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentListener;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JInternalFrame;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
/**
* Encapsulates various utilities for windows (ie: <code>Frame</code> and
* <code>Dialog</code> objects and descendants, in particular).
*
* @author Richard Bair
*/
public final class WindowUtils {
private static final Logger LOG = Logger.getLogger(WindowUtils.class
.getName());
/**
* Hide the constructor - don't wan't anybody creating an instance of this
*/
private WindowUtils() {
}
/**
* <p>
* Returns the <code>Point</code> at which a window should be placed to
* center that window on the screen.
* </p>
* <p>
* Some thought was taken as to whether to implement a method such as this,
* or to simply make a method that, given a window, will center it. It was
* decided that it is better to not alter an object within a method.
* </p>
*
* @param window The window to calculate the center point for. This object
* can not be null.
*
* @return the <code>Point</code> at which the window should be placed to
* center that window on the screen.
*/
public static Point getPointForCentering(Window window) {
Rectangle usableBounds = getUsableDeviceBounds(window);
int screenWidth = usableBounds.width;
int screenHeight = usableBounds.height;
int width = window.getWidth();
int height = window.getHeight();
return new Point(((screenWidth - width) / 2) + usableBounds.x,
((screenHeight - height) / 2) + usableBounds.y);
}
private static Rectangle getUsableDeviceBounds(Window window) {
Window owner = window.getOwner();
GraphicsConfiguration gc = null;
if (owner == null) {
gc = GraphicsEnvironment.getLocalGraphicsEnvironment()
.getDefaultScreenDevice().getDefaultConfiguration();
} else {
gc = owner.getGraphicsConfiguration();
}
Insets insets = Toolkit.getDefaultToolkit().getScreenInsets(gc);
Rectangle bounds = gc.getBounds();
bounds.x += insets.left;
bounds.y += insets.top;
bounds.width -= (insets.left + insets.right);
bounds.height -= (insets.top + insets.bottom);
return bounds;
}
/**
* <p/>
* Returns the <code>Point</code> at which a window should be placed to
* center that window on the given desktop.
* </p>
* <p/>
* Some thought was taken as to whether to implement a method such as this,
* or to simply make a method that, given a window, will center it. It was
* decided that it is better to not alter an object within a method.
* </p>
*
* @param window The window (JInternalFrame) to calculate the center point
* for. This object can not be null.
*
* @return the <code>Point</code> at which the window should be placed to
* center that window on the given desktop
*/
public static Point getPointForCentering(JInternalFrame window) {
try {
//assert window != null;
Point mousePoint = MouseInfo.getPointerInfo().getLocation();
GraphicsDevice[] devices = GraphicsEnvironment
.getLocalGraphicsEnvironment().getScreenDevices();
for (GraphicsDevice device : devices) {
Rectangle bounds = device.getDefaultConfiguration().getBounds();
//check to see if the mouse cursor is within these bounds
if (mousePoint.x >= bounds.x && mousePoint.y >= bounds.y
&& mousePoint.x <= (bounds.x + bounds.width)
&& mousePoint.y <= (bounds.y + bounds.height)) {
//this is it
int screenWidth = bounds.width;
int screenHeight = bounds.height;
int width = window.getWidth();
int height = window.getHeight();
return new Point(((screenWidth - width) / 2) + bounds.x,
((screenHeight - height) / 2) + bounds
.y);
}
}
} catch (Exception e) {
LOG.log(Level.FINE, e.getLocalizedMessage() +
" - this can occur do to a Security exception in sandboxed apps");
}
return new Point(0, 0);
}
/**
* <p/>
* Returns the <code>Point</code> at which a window should be placed in
* order to be staggered slightly from another "origin" window to
* ensure that the title areas of both windows remain visible to the user.
* </p>
*
* @param originWindow Window from which the staggered location will be calculated
*
* @return location staggered from the upper left location of the origin
* window
*/
public static Point getPointForStaggering(Window originWindow) {
Point origin = originWindow.getLocation();
Insets insets = originWindow.getInsets();
origin.x += insets.top;
origin.y += insets.top;
return origin;
}
public static Window findWindow(Component c) {
if (c == null) {
return JOptionPane.getRootFrame();
} else if (c instanceof Window) {
return (Window) c;
} else {
return findWindow(c.getParent());
}
}
public static List<Component> getAllComponents(final Container c) {
Component[] comps = c.getComponents();
List<Component> compList = new ArrayList<Component>();
for (Component comp : comps) {
compList.add(comp);
if (comp instanceof Container) {
compList.addAll(getAllComponents((Container) comp));
}
}
return compList;
}
/**
* Installs/resets a ComponentListener to resize the
* given window to minWidth/Height if needed.
*
* @param window
* @param minWidth
* @param minHeight
*/
public static void setMinimumSizeManager(Window window, int minWidth,
int minHeight) {
ComponentListener[] listeners = window.getComponentListeners();
ComponentListener listener = null;
for (ComponentListener l : listeners) {
if (l instanceof MinSizeComponentListener) {
listener = l;
break;
}
}
if (listener == null) {
window.addComponentListener(new MinSizeComponentListener(
window, minWidth, minHeight));
} else {
((MinSizeComponentListener) listener).resetSizes(minWidth,
minHeight);
}
}
/**
* Resets window size to minSize if needed.
*
* @author Patrick Wright
*/
public static class MinSizeComponentListener extends ComponentAdapter {
private Window window;
private int minHeight;
private int minWidth;
MinSizeComponentListener(Window frame, int minWidth, int minHeight) {
this.window = frame;
resetSizes(minWidth, minHeight);
}
public void resetSizes(int minWidth, int minHeight) {
this.minWidth = minWidth;
this.minHeight = minHeight;
adjustIfNeeded(window);
}
@Override
public void componentResized(java.awt.event.ComponentEvent evt) {
adjustIfNeeded((Window) evt.getComponent());
}
private void adjustIfNeeded(final Window window) {
boolean doSize = false;
int newWidth = window.getWidth();
int newHeight = window.getHeight();
if (newWidth < minWidth) {
newWidth = minWidth;
doSize = true;
}
if (newHeight < minHeight) {
newHeight = minHeight;
doSize = true;
}
if (doSize) {
final int w = newWidth;
final int h = newHeight;
SwingUtilities.invokeLater(new Runnable() {
public void run() {
window.setSize(w, h);
}
});
}
}
}
}