/*
* CurvePanel.java
* Eisenkraut
*
* Copyright (c) 2004-2014 Hanns Holger Rutz. All rights reserved.
*
* This software is published under the GNU General Public License v3+
*
*
* For further information, please contact Hanns Holger Rutz at
* contact@sciss.de
*
*
* Changelog:
* 15-Jul-05 created
*/
package de.sciss.eisenkraut.gui;
import java.awt.AWTEventMulticaster;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Paint;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.awt.geom.CubicCurve2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Point2D;
import java.util.prefs.Preferences;
import javax.swing.BorderFactory;
import javax.swing.JComponent;
import javax.swing.event.MouseInputAdapter;
/**
* This class describes a generic GUI tool
* that can be aquired and dismissed by
* a <code>Component</code>.
*
* @author Hanns Holger Rutz
* @version 0.70, 31-May-08
*/
public class CurvePanel
extends JComponent
// implements LaterInvocationManager.Listener
{
private static final String KEY_CTRLX1 = "ctrlx1";
private static final String KEY_CTRLY1 = "ctrly1";
private static final String KEY_CTRLX2 = "ctrlx2";
private static final String KEY_CTRLY2 = "ctrly2";
// private static final String[] KEYS = { KEY_CTRLX1, KEY_CTRLY1, KEY_CTRLX2, KEY_CTRLY2 };
private final CubicCurve2D[] shpFades;
private final AffineTransform at = new AffineTransform();
protected static final Insets insets = new Insets( 1, 1, 1, 1 );
private static final Shape shpCtrlIn = new Ellipse2D.Double( -2, -2, 5, 5 );
private static final Area shpCtrlOut;
private static final Paint pntCtrlIn = new Color( 0x00, 0x00, 0x00, 0x7F );
private static final Paint pntCtrlOut = new Color( 0x00, 0x00, 0x00, 0x3F );
private static final Paint pntCtrlOutS = new Color( 0x00, 0x00, 0xFF, 0x7F );
private final Shape[] tShpFades;
protected final Point2D[] ctrlPt = new Point2D[] {
new Point2D.Double( 0.5, 0.5 ), new Point2D.Double( 0.5, 0.5 )};
protected int recentWidth = -1;
protected int recentHeight = -1;
protected boolean recalc = true;
protected Point2D dragPt = null;
// private final Preferences prefs;
private ActionListener actionListener = null;
static {
shpCtrlOut = new Area( new Ellipse2D.Double( -7, -7, 15, 15 ));
shpCtrlOut.subtract( new Area( new Ellipse2D.Double( -4, -4, 9, 9 )));
}
public CurvePanel( CubicCurve2D[] basicCurves, final Preferences prefs )
{
super();
final Dimension d = new Dimension( 64, 64 );
shpFades = basicCurves;
// prefs = prefs;
tShpFades = new Shape[ shpFades.length ];
if( prefs != null ) {
ctrlPt[0].setLocation( prefs.getDouble( KEY_CTRLX1, 0.5 ), prefs.getDouble( KEY_CTRLY1, 0.5 ));
ctrlPt[1].setLocation( prefs.getDouble( KEY_CTRLX2, 0.5 ), prefs.getDouble( KEY_CTRLY2, 0.5 ));
}
setMinimumSize( d );
setPreferredSize( d );
setBorder( BorderFactory.createEmptyBorder( insets.left, insets.top, insets.bottom, insets.right ));
// if( prefs != null ) {
// new DynamicAncestorAdapter( new DynamicPrefChangeManager( prefs, KEYS, this )).addTo( this );
// }
MouseInputAdapter mia = new MouseInputAdapter() {
private boolean didThemDragga = false;
public void mousePressed( MouseEvent e )
{
Point2D mousePt = getVirtualMousePos( e );
if( mousePt.distanceSq( ctrlPt[ 0 ]) <= mousePt.distanceSq( ctrlPt[ 1 ])) {
dragPt = ctrlPt[ 0 ];
} else {
dragPt = ctrlPt[ 1 ];
}
processDrag( mousePt, !e.isControlDown() );
}
public void mouseReleased( MouseEvent e )
{
dragPt = null;
repaint();
if( didThemDragga ) {
dispatchAction();
didThemDragga = false;
}
}
private Point2D getVirtualMousePos( MouseEvent e )
{
return new Point2D.Double(
Math.max( 0.0, Math.min( 1.0, (double) (e.getX() - insets.left) / recentWidth )),
1.0 - Math.max( 0.0, Math.min( 1.0, (double) (e.getY() - insets.top) / recentHeight )));
}
public void mouseMoved( MouseEvent e )
{
mouseDragged( e ); // mouseDragged not called with popup dialog!
}
public void mouseDragged( MouseEvent e )
{
if( dragPt != null ) processDrag( getVirtualMousePos( e ), !e.isControlDown() );
}
private void processDrag( Point2D mousePt, boolean snap )
{
didThemDragga = true;
if( snap ) {
if( Math.abs( mousePt.getX() - 0.5 ) < 0.1 ) mousePt.setLocation( 0.5, mousePt.getY() );
if( Math.abs( mousePt.getY() - 0.5 ) < 0.1 ) mousePt.setLocation( mousePt.getX(), 0.5 );
}
dragPt.setLocation( mousePt );
if( prefs != null ) {
if( dragPt == ctrlPt[0] ) {
prefs.putDouble( KEY_CTRLX1, dragPt.getX() );
prefs.putDouble( KEY_CTRLY1, dragPt.getY() );
} else {
prefs.putDouble( KEY_CTRLX2, dragPt.getX() );
prefs.putDouble( KEY_CTRLY2, dragPt.getY() );
}
}
recalc = true;
repaint();
}
};
addMouseListener( mia );
addMouseMotionListener( mia );
}
public void addActionListener( ActionListener l )
{
synchronized( this ) {
actionListener = AWTEventMulticaster.add( actionListener, l );
}
}
public void removeActionListener( ActionListener l )
{
synchronized( this ) {
actionListener = AWTEventMulticaster.remove( actionListener, l );
}
}
protected void dispatchAction()
{
final ActionListener listener = actionListener;
if( listener != null ) {
listener.actionPerformed( new ActionEvent( this, ActionEvent.ACTION_PERFORMED, null ));
}
}
public Point2D[] getControlPoints()
{
return new Point2D[] { new Point2D.Double( ctrlPt[ 0 ].getX(), ctrlPt[ 0 ].getY() ),
new Point2D.Double( ctrlPt[ 1 ].getX(), ctrlPt[ 1 ].getY() )};
}
public void setControlPoints( Point2D ctrlPt1, Point2D ctrlPt2 )
{
ctrlPt[0].setLocation( ctrlPt1.getX(), ctrlPt1.getY() );
ctrlPt[1].setLocation( ctrlPt2.getX(), ctrlPt2.getY() );
recalc = true;
repaint();
}
// this is static to allow calculations
// without actually creating GUI elements
public static Point2D[] getControlPoints( Preferences prefs )
{
return new Point2D[] {
new Point2D.Double( prefs.getDouble( KEY_CTRLX1, 0.5 ), prefs.getDouble( KEY_CTRLY1, 0.5 )),
new Point2D.Double( prefs.getDouble( KEY_CTRLX2, 0.5 ), prefs.getDouble( KEY_CTRLY2, 0.5 ))
};
}
public static void toPrefs( Point2D[] ctrlPt, Preferences prefs )
{
prefs.putDouble( KEY_CTRLX1, ctrlPt[0].getX() );
prefs.putDouble( KEY_CTRLY1, ctrlPt[0].getY() );
prefs.putDouble( KEY_CTRLX2, ctrlPt[1].getX() );
prefs.putDouble( KEY_CTRLY2, ctrlPt[1].getY() );
}
public void toPrefs( Preferences prefs )
{
toPrefs( ctrlPt, prefs );
}
public void paintComponent( Graphics g )
{
super.paintComponent( g );
final Graphics2D g2 = (Graphics2D) g;
final int currentWidth = getWidth() - insets.left - insets.right;
final int currentHeight = getHeight() - insets.top - insets.bottom;
final AffineTransform atOrig = g2.getTransform();
double trnsX, trnsY;
if( (currentWidth != recentWidth) || (currentHeight != recentHeight) || recalc ) {
recentWidth = currentWidth;
recentHeight = currentHeight;
at.setToScale( currentWidth, -currentHeight );
at.translate( 0, -1.0 );
recalcTransforms();
}
g2.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );
g2.translate( insets.left, insets.top );
for( int i = 0; i < tShpFades.length; i++ ) {
g2.draw( tShpFades[ i ]);
}
for( int i = 0; i < ctrlPt.length; i++ ) {
trnsX = ctrlPt[i].getX() * currentWidth;
trnsY = (1.0 - ctrlPt[i].getY()) * currentHeight;
g2.translate( trnsX, trnsY );
g2.setPaint( pntCtrlIn );
g2.fill( shpCtrlIn );
if( ctrlPt[i] == dragPt ) {
g2.setPaint( pntCtrlOutS );
} else {
g2.setPaint( pntCtrlOut );
}
g2.fill( shpCtrlOut );
g2.translate( -trnsX, -trnsY );
}
g2.setTransform( atOrig );
}
private void recalcTransforms()
{
// if( prefs != null ) {
// ctrlPt[0].setLocation( prefs.getDouble( KEY_CTRLX1, 0.5 ), prefs.getDouble( KEY_CTRLY1, 0.5 ));
// ctrlPt[1].setLocation( prefs.getDouble( KEY_CTRLX2, 0.5 ), prefs.getDouble( KEY_CTRLY2, 0.5 ));
// }
for( int i = 0; i < shpFades.length; i++ ) {
// shpFades[ i ].setCurve( shpFades[ i ].getP1(), ctrlPt[ i % 2 ], ctrlPt[ (i+1) % 2 ], shpFades[ i ].getP2() );
shpFades[ i ].setCurve( shpFades[ i ].getX1(), shpFades[ i ].getY1(),
ctrlPt[ 0 ].getX(), ctrlPt[ i % 2 ].getY(),
ctrlPt[ 1 ].getX(), ctrlPt[ (i+1) % 2 ].getY(),
shpFades[ i ].getX2(), shpFades[ i ].getY2() );
tShpFades[ i ] = at.createTransformedShape( shpFades[ i ]);
}
recalc = false;
}
// // o instanceof PreferenceChangeEvent
// public void laterInvocation( Object o )
// {
// recalc = true;
// repaint();
// }
public static class Icon
implements javax.swing.Icon
{
private final int width;
private final int height;
private final AffineTransform at;
private final CubicCurve2D[] shpFades;
private final Shape[] tShpFades;
private final Point2D[] ctrlPt = new Point2D[] {
new Point2D.Double( 0.5, 0.5 ), new Point2D.Double( 0.5, 0.5 )};
public Icon( CubicCurve2D[] basicCurves )
{
this( basicCurves, 16, 16 );
}
public Icon( CubicCurve2D[] basicCurves, int width, int height )
{
this.width = width;
this.height = height;
at = AffineTransform.getScaleInstance( width, -height );
at.translate( 0, -1.0 );
shpFades = basicCurves;
tShpFades = new Shape[ shpFades.length ];
}
public int getIconWidth() { return width; }
public int getIconHeight() { return height; }
// public void update( Preferences prefs )
// {
// ctrlPt[0].setLocation( prefs.getDouble( KEY_CTRLX1, 0.5 ), prefs.getDouble( KEY_CTRLY1, 0.5 ));
// ctrlPt[1].setLocation( prefs.getDouble( KEY_CTRLX2, 0.5 ), prefs.getDouble( KEY_CTRLY2, 0.5 ));
//
// for( int i = 0; i < shpFades.length; i++ ) {
// shpFades[ i ].setCurve( shpFades[ i ].getX1(), shpFades[ i ].getY1(),
// ctrlPt[ 0 ].getX(), ctrlPt[ i % 2 ].getY(),
// ctrlPt[ 1 ].getX(), ctrlPt[ (i+1) % 2 ].getY(),
// shpFades[ i ].getX2(), shpFades[ i ].getY2() );
// tShpFades[ i ] = at.createTransformedShape( shpFades[ i ]);
// }
// }
public void update( Point2D ctrl1, Point2D ctrl2 )
{
ctrlPt[0].setLocation( ctrl1.getX(), ctrl1.getY() );
ctrlPt[1].setLocation( ctrl2.getX(), ctrl2.getY() );
for( int i = 0; i < shpFades.length; i++ ) {
shpFades[ i ].setCurve( shpFades[ i ].getX1(), shpFades[ i ].getY1(),
ctrlPt[ 0 ].getX(), ctrlPt[ i % 2 ].getY(),
ctrlPt[ 1 ].getX(), ctrlPt[ (i+1) % 2 ].getY(),
shpFades[ i ].getX2(), shpFades[ i ].getY2() );
tShpFades[ i ] = at.createTransformedShape( shpFades[ i ]);
}
}
public void paintIcon( Component c, Graphics g, int x, int y )
{
final Graphics2D g2 = (Graphics2D) g;
final AffineTransform atOrig = g2.getTransform();
g2.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );
g2.translate( x, y );
g2.setColor( Color.black );
for( int i = 0; i < tShpFades.length; i++ ) {
g2.draw( tShpFades[ i ]);
}
g2.setTransform( atOrig );
}
}
}