/*
* Copyright (c) 1997, 2003, 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
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*/
package com.sun.java.swing.plaf.motif;
import javax.swing.*;
import java.awt.Rectangle;
import java.awt.Dimension;
import java.awt.Insets;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Component;
import java.awt.Point;
import javax.swing.plaf.*;
import java.io.Serializable;
/**
* <p>
* <strong>Warning:</strong>
* 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 applications running the same
* version of Swing. A future release of Swing will provide support for
* long term persistence.
*
* @author David Kloba
*/
public class MotifDesktopPaneUI extends javax.swing.plaf.basic.BasicDesktopPaneUI
{
/// DesktopPaneUI methods
public static ComponentUI createUI(JComponent d) {
return new MotifDesktopPaneUI();
}
public MotifDesktopPaneUI() {
}
protected void installDesktopManager() {
desktopManager = desktop.getDesktopManager();
if(desktopManager == null) {
desktopManager = new MotifDesktopManager();
desktop.setDesktopManager(desktopManager);
((MotifDesktopManager)desktopManager).adjustIcons(desktop);
}
}
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, UIResource {
JComponent dragPane;
boolean usingDragPane = false;
private transient JLayeredPane layeredPaneForDragPane;
int iconWidth, iconHeight;
// 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();
layeredPaneForDragPane = (JLayeredPane)f.getParent();
layeredPaneForDragPane.setLayer(dragPane, Integer.MAX_VALUE);
dragPane.setBounds(f.getX(), f.getY(), f.getWidth(), f.getHeight());
layeredPaneForDragPane.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) {
layeredPaneForDragPane.remove(dragPane);
usingDragPane = false;
if (f instanceof JInternalFrame) {
setBoundsForFrame(f, dragPane.getX(), dragPane.getY(),
dragPane.getWidth(), dragPane.getHeight());
} else if (f instanceof JInternalFrame.JDesktopIcon) {
adjustBoundsForIcon((JInternalFrame.JDesktopIcon)f,
dragPane.getX(), dragPane.getY());
}
}
}
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());
}
}
public void iconifyFrame(JInternalFrame f) {
JInternalFrame.JDesktopIcon icon = f.getDesktopIcon();
Point p = icon.getLocation();
adjustBoundsForIcon(icon, p.x, p.y);
super.iconifyFrame(f);
}
/**
* Change positions of icons in the desktop pane so that
* they do not overlap
*/
protected void adjustIcons(JDesktopPane desktop) {
// We need to know Motif icon size
JInternalFrame.JDesktopIcon icon = new JInternalFrame.JDesktopIcon(
new JInternalFrame());
Dimension iconSize = icon.getPreferredSize();
iconWidth = iconSize.width;
iconHeight = iconSize.height;
JInternalFrame[] frames = desktop.getAllFrames();
for (int i=0; i<frames.length; i++) {
icon = frames[i].getDesktopIcon();
Point ip = icon.getLocation();
adjustBoundsForIcon(icon, ip.x, ip.y);
}
}
/**
* Change positions of icon so that it doesn't overlap
* other icons.
*/
protected void adjustBoundsForIcon(JInternalFrame.JDesktopIcon icon,
int x, int y) {
JDesktopPane c = icon.getDesktopPane();
int maxy = c.getHeight();
int w = iconWidth;
int h = iconHeight;
c.repaint(x, y, w, h);
x = x < 0 ? 0 : x;
y = y < 0 ? 0 : y;
/* Fix for disappearing icons. If the y value is maxy then this
* algorithm would place the icon in a non-displayed cell. Never
* to be ssen again.*/
y = y >= maxy ? (maxy - 1) : y;
/* Compute the offset for the cell we are trying to go in. */
int lx = (x / w) * w;
int ygap = maxy % h;
int ly = ((y-ygap) / h) * h + ygap;
/* How far are we into the cell we dropped the icon in. */
int dx = x - lx;
int dy = y - ly;
/* Set coordinates for the icon. */
x = dx < w/2 ? lx: lx + w;
y = dy < h/2 ? ly: ((ly + h) < maxy ? ly + h: ly);
while (getIconAt(c, icon, x, y) != null) {
x += w;
}
/* Cancel the move if the x value was moved off screen. */
if (x > c.getWidth()) {
return;
}
if (icon.getParent() != null) {
setBoundsForFrame(icon, x, y, w, h);
} else {
icon.setLocation(x, y);
}
}
protected JInternalFrame.JDesktopIcon getIconAt(JDesktopPane desktop,
JInternalFrame.JDesktopIcon icon, int x, int y) {
JInternalFrame.JDesktopIcon currentIcon = null;
Component[] components = desktop.getComponents();
for (int i=0; i<components.length; i++) {
Component comp = components[i];
if (comp instanceof JInternalFrame.JDesktopIcon &&
comp != icon) {
Point p = comp.getLocation();
if (p.x == x && p.y == y) {
return (JInternalFrame.JDesktopIcon)comp;
}
}
}
return null;
}
}; /// END of MotifDesktopManager
}