/*
* org.openmicroscopy.shoola.agents.dataBrowser.browser.GlassPane
*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2011 University of Dundee & Open Microscopy Environment.
* All rights reserved.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*------------------------------------------------------------------------------
*/
package org.openmicroscopy.shoola.agents.dataBrowser.browser;
//Java imports
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import javax.swing.JPanel;
//Third-party libraries
//Application-internal dependencies
/**
* Draws a rectangular overlay to indicate the selection.
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @since Beta4.4
*/
class GlassPane
extends JPanel
{
/** The color to indicate the selection.*/
private static Color SELECTION = new Color(Color.GRAY.getRed(),
Color.GRAY.getGreen(), Color.GRAY.getBlue(), 100);
/** The rectangle used to select multiple nodes.*/
private Rectangle selection;
/** Creates a new instance.*/
GlassPane()
{
setOpaque(false);
}
/**
* Sets the selection.
*
* @param selection The value to set.
*/
void setSelection(Rectangle selection)
{
this.selection = selection;
repaint();
}
/**
* Overridden to draw the selection.
* @see JPanel#paintComponents(Graphics)
*/
public void paintComponent(Graphics g)
{
super.paintComponent(g);
if (selection == null) return;
Graphics2D g2D = (Graphics2D) g;
g2D.setColor(SELECTION);
g2D.fillRect(selection.x, selection.y, selection.width,
selection.height);
}
}