/*
* SplinePanel.
*
* JavaZOOM : jlgui@javazoom.net
* http://www.javazoom.net
*
*-----------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*----------------------------------------------------------------------
*/
package plugins.audioPlayer.javazoom.jlgui.player.amp.equalizer.ui;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Polygon;
import javax.swing.JPanel;
import plugins.audioPlayer.javazoom.jlgui.player.amp.skin.AbsoluteConstraints;
public class SplinePanel extends JPanel
{
private AbsoluteConstraints constraints = null;
private Image backgroundImage = null;
private Image barImage = null;
private int[] values = null;
private Color[] gradient = null;
public SplinePanel()
{
super();
setDoubleBuffered(true);
setLayout(null);
}
public Color[] getGradient()
{
return gradient;
}
public void setGradient(Color[] gradient)
{
this.gradient = gradient;
}
public void setConstraints(AbsoluteConstraints cnts)
{
constraints = cnts;
}
public AbsoluteConstraints getConstraints()
{
return constraints;
}
public Image getBarImage()
{
return barImage;
}
public void setBarImage(Image barImage)
{
this.barImage = barImage;
}
public Image getBackgroundImage()
{
return backgroundImage;
}
public void setBackgroundImage(Image backgroundImage)
{
this.backgroundImage = backgroundImage;
}
public int[] getValues()
{
return values;
}
public void setValues(int[] values)
{
this.values = values;
}
/* (non-Javadoc)
* @see javax.swing.JComponent#paintComponent(java.awt.Graphics)
*/
public void paintComponent(Graphics g)
{
if (backgroundImage != null) g.drawImage(backgroundImage, 0, 0, null);
if (barImage != null) g.drawImage(barImage, 0, getHeight()/2, null);
if ((values != null) && (values.length > 0))
{
NaturalSpline curve = new NaturalSpline();
float dx = 1.0f * getWidth() / (values.length - 2);
int h = getHeight();
curve.setMaxHeight(h);
curve.setMinHeight(0);
for (int i = 1; i < values.length; i++)
{
int x1 = (int) Math.round(dx * (i - 1));
int y1 = ((int) Math.round((h * values[i] / 100)));
y1 = curve.boundY(y1);
curve.addPoint(x1, y1);
}
Polygon spline = curve.getPolyline();
if (gradient != null)
{
for (int i=0;i<(spline.npoints-1);i++)
{
g.setColor(gradient[spline.ypoints[i]]);
g.drawLine(spline.xpoints[i], spline.ypoints[i],spline.xpoints[i+1], spline.ypoints[i+1]);
}
}
else
{
g.drawPolyline(spline.xpoints, spline.ypoints, spline.npoints);
}
}
}
}