Programming Languages Suite/ProgLangD.iso/VCAFE.3.0A/JFC.bin/MotifDesktopPaneUI.java

Java Source | 1998-06-30 | 5.3 KB | 162 lines

/*
 * @(#)MotifDesktopPaneUI.java    1.13 98/02/06
 *
 * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
 *
 * This software is the confidential and proprietary information of Sun
 * Microsystems, Inc. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with Sun.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
 * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
 * THIS SOFTWARE OR ITS DERIVATIVES.
 *
 */

package com.sun.java.swing.plaf.motif;

import com.sun.java.swing.*;
import java.awt.Rectangle;
import java.awt.Dimension;
import java.awt.Insets;
import java.awt.Color;
import java.awt.Graphics;
import com.sun.java.swing.plaf.*;
import java.io.Serializable;

/**
 * <p>
 * Warning: serialized objects of this class will not be compatible with
 * future swing releases.  The current serialization support is appropriate
 * for short term storage or RMI between Swing1.0 applications.  It will
 * not be possible to load serialized Swing1.0 objects with future releases
 * of Swing.  The JDK1.2 release of Swing will be the compatibility
 * baseline for the serialized form of Swing objects.
 *
 * @version 1.13 02/06/98
 * @author David Kloba
 */
public class MotifDesktopPaneUI extends com.sun.java.swing.plaf.basic.BasicDesktopPaneUI
{

/// DesktopPaneUI methods
    public static ComponentUI createUI(JComponent d)    {
        return new MotifDesktopPaneUI();
    }

    public MotifDesktopPaneUI() {
    }

    protected void installDesktopManager() {
    if(desktop.getDesktopManager() == null) {
        desktopManager = new MotifDesktopManager();
        desktop.setDesktopManager(desktopManager);
    }
    }

    public Insets getInsets(JComponent c) {return new Insets(0,0,0,0);}

////////////////////////////////////////////////////////////////////////////////////
///  DragPane class
////////////////////////////////////////////////////////////////////////////////////
    private class DragPane extends JComponent {
    public void paint(Graphics g) {
        g.setColor(Color.darkGray);
        g.drawRect(0, 0, getWidth()-1, getHeight()-1);
    }
    };

////////////////////////////////////////////////////////////////////////////////////
///  MotifDesktopManager class
////////////////////////////////////////////////////////////////////////////////////
    private class MotifDesktopManager extends DefaultDesktopManager implements Serializable {
        JComponent dragPane;
        boolean usingDragPane;

    // PENDING(klobad) this should be optimized
    public void setBoundsForFrame(JComponent f, int newX, int newY,
            int newWidth, int newHeight) {
    if(!usingDragPane) {
            boolean didResize;
            didResize = (f.getWidth() != newWidth || f.getHeight() != newHeight);
        Rectangle r = f.getBounds();
        f.setBounds(newX, newY, newWidth, newHeight);
        SwingUtilities.computeUnion(newX, newY, newWidth, newHeight, r);
        f.getParent().repaint(r.x, r.y, r.width, r.height);
        if(didResize) {
            f.validate();
          }
    } else {
        Rectangle r = dragPane.getBounds();
        dragPane.setBounds(newX, newY, newWidth, newHeight);
        SwingUtilities.computeUnion(newX, newY, newWidth, newHeight, r);
        dragPane.getParent().repaint(r.x, r.y, r.width, r.height);
    }
    }

    public void beginDraggingFrame(JComponent f) {
    usingDragPane = false;
    if(f.getParent() instanceof JLayeredPane) {
        if(dragPane == null)
        dragPane = new DragPane();
        JLayeredPane p = (JLayeredPane)f.getParent();
        p.setLayer(dragPane, Integer.MAX_VALUE);
        dragPane.setBounds(f.getX(), f.getY(), f.getWidth(), f.getHeight());
        p.add(dragPane);
        usingDragPane = true;
    }
    }

    public void dragFrame(JComponent f, int newX, int newY) {
    setBoundsForFrame(f, newX, newY, f.getWidth(), f.getHeight());
    }

    public void endDraggingFrame(JComponent f) {
    if(usingDragPane) {
        JLayeredPane p = (JLayeredPane)f.getParent();
        p.remove(dragPane);
        usingDragPane = false;
            setBoundsForFrame(f, dragPane.getX(), dragPane.getY(),
                dragPane.getWidth(), dragPane.getHeight());
    }
    }

    public void beginResizingFrame(JComponent f, int direction) {
    usingDragPane = false;
    if(f.getParent() instanceof JLayeredPane) {
        if(dragPane == null)
        dragPane = new DragPane();
        JLayeredPane p = (JLayeredPane)f.getParent();
        p.setLayer(dragPane, Integer.MAX_VALUE);
        dragPane.setBounds(f.getX(), f.getY(),
                f.getWidth(), f.getHeight());
        p.add(dragPane);
        usingDragPane = true;
    }
    }

    public void resizeFrame(JComponent f, int newX, int newY,
                int newWidth, int newHeight) {
    setBoundsForFrame(f, newX, newY, newWidth, newHeight);
    }

    public void endResizingFrame(JComponent f) {
    if(usingDragPane) {
        JLayeredPane p = (JLayeredPane)f.getParent();
        p.remove(dragPane);
        usingDragPane = false;
            setBoundsForFrame(f, dragPane.getX(), dragPane.getY(),
                dragPane.getWidth(), dragPane.getHeight());
    }
    }

    }; /// END of MotifDesktopManager

}