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/*******************************************************************************
* Copyright (c) 2014 Jeff Martin.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Public License v3.0
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/gpl.html
*
* Contributors:
* Jeff Martin - initial API and implementation
******************************************************************************/
package cuchaz.enigma.gui;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Shape;
import javax.swing.text.BadLocationException;
import javax.swing.text.Highlighter;
import javax.swing.text.JTextComponent;
public abstract class BoxHighlightPainter implements Highlighter.HighlightPainter
{
private Color m_fillColor;
private Color m_borderColor;
protected BoxHighlightPainter( Color fillColor, Color borderColor )
{
m_fillColor = fillColor;
m_borderColor = borderColor;
}
@Override
public void paint( Graphics g, int start, int end, Shape shape, JTextComponent text )
{
Rectangle bounds = getBounds( text, start, end );
// fill the area
if( m_fillColor != null )
{
g.setColor( m_fillColor );
g.fillRoundRect( bounds.x, bounds.y, bounds.width, bounds.height, 4, 4 );
}
// draw a box around the area
g.setColor( m_borderColor );
g.drawRoundRect( bounds.x, bounds.y, bounds.width, bounds.height, 4, 4 );
}
protected static Rectangle getBounds( JTextComponent text, int start, int end )
{
try
{
// determine the bounds of the text
Rectangle bounds = text.modelToView( start ).union( text.modelToView( end ) );
// adjust the box so it looks nice
bounds.x -= 2;
bounds.width += 2;
bounds.y += 1;
bounds.height -= 2;
return bounds;
}
catch( BadLocationException ex )
{
// don't care... just return something
return new Rectangle( 0, 0, 0, 0 );
}
}
}
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