/*=========================================================================

  Program:   FusionViewer
  Module:    $RCSfile: SplitWindowPanel.java,v $
  Language:  Java
  Date:      $Date: 2007/02/02 19:27:57 $
  Version:   $Revision: 1.2 $
  
  Copyright (c) Insightful Corporation.  All rights reserved.
  See Copyright.txt for details.
  
  This software is distributed WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  PURPOSE.  See the above copyright notice for more information.

=========================================================================*/

package org.fusionviewer.ui;

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.fusionviewer.model.FusionDisplayModel;
import org.fusionviewer.model.ImageDisplayModel;
import org.fusionviewer.model.ImageDisplayModelListener;



/**\class SplitWindowPanel
 *\brief Controls for changing split window fusion mode parameters.
 */
public class SplitWindowPanel extends JPanel implements ChangeListener, ImageDisplayModelListener {
	private FusionDisplayModel m_model;
	private JSlider m_slider;
	private JLabel m_alphaValue;
	private JLabel m_tickSpacingValue;
	private JButton m_optionsButton;
	
	public SplitWindowPanel(FusionDisplayModel model) {
		m_model = model;
		model.addListener(this);
		
		setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
		
		setLayout(new GridBagLayout());
		
		GridBagConstraints labelConstraints = new GridBagConstraints();
		labelConstraints.fill = GridBagConstraints.NONE;
		labelConstraints.anchor = GridBagConstraints.LINE_START;
		labelConstraints.insets = new java.awt.Insets(5, 5, 5, 5);
		labelConstraints.gridx = 0;
		labelConstraints.gridy = 0;
		
		GridBagConstraints sliderConstraints = new GridBagConstraints();
		sliderConstraints.fill = GridBagConstraints.HORIZONTAL;
		sliderConstraints.weightx = 1.0;
		sliderConstraints.insets = new java.awt.Insets(5, 5, 5, 5);
		sliderConstraints.gridx = 1;
		sliderConstraints.gridy = 0;
		
		GridBagConstraints valueConstraints = new GridBagConstraints();
		valueConstraints.fill = GridBagConstraints.HORIZONTAL;
		valueConstraints.insets = new java.awt.Insets(5, 5, 5, 5);
		valueConstraints.gridx = 1;
		valueConstraints.gridy = 1;
				
		GridBagConstraints spacingConstraints = new GridBagConstraints();
		spacingConstraints.fill = GridBagConstraints.NONE;
		spacingConstraints.anchor = GridBagConstraints.LINE_START;
		spacingConstraints.insets = new java.awt.Insets(5, 5, 5, 5);
		spacingConstraints.gridx = 0;
		spacingConstraints.gridy = 2;
		spacingConstraints.gridwidth = 2;
		
		m_slider = new JSlider();
		m_slider.setPaintTicks(true);
		m_slider.setMajorTickSpacing(10);
		m_slider.setMaximum(100);
		m_slider.setMinimum(0);
		m_slider.addChangeListener(this);
		
		m_alphaValue = new JLabel();
		m_alphaValue.setHorizontalAlignment(JLabel.CENTER);
		
		m_optionsButton = new JButton("Set...");
		m_optionsButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent evt) {
				showTickmarkDialog();
			}
		});
		
		m_tickSpacingValue = new JLabel();
		m_tickSpacingValue.setHorizontalAlignment(JLabel.CENTER);
		
		setOpaque(false);
		m_slider.setOpaque(false);
		m_optionsButton.setOpaque(false);
		
		setValuesToModel();
		
		add(new JLabel("Opacity"), labelConstraints);
		add(m_slider, sliderConstraints);
		add(m_alphaValue, valueConstraints);
		
		Box spacingPanel = Box.createHorizontalBox();	
		spacingPanel.add(new JLabel("Tickmark Spacing:"));
		spacingPanel.add(Box.createHorizontalStrut(10));
		spacingPanel.add(m_tickSpacingValue);
		spacingPanel.add(Box.createHorizontalStrut(20));
		spacingPanel.add(m_optionsButton);
		add(spacingPanel, spacingConstraints);
	}

	private void setValuesToModel() {
		int value = (int) (m_model.getSplitWindowAlpha() * 100.0f);
		m_slider.setValue(value);
		showText(value, m_model.getSplitWindowTickSpacing());
	}

	/* (non-Javadoc)
	 * @see javax.swing.event.ChangeListener#stateChanged(javax.swing.event.ChangeEvent)
	 */
	public void stateChanged(ChangeEvent e) {
		m_model.setSplitWindowAlpha((float) m_slider.getValue() / 100.0f);
		showText(m_slider.getValue(), m_model.getSplitWindowTickSpacing());
	}

	/* (non-Javadoc)
	 * @see com.insightful.jimage.core.ImageDisplayModelListener#modelChanged(int, com.insightful.jimage.core.ImageDisplayModel)
	 */
	public void modelChanged(int type, int planes, ImageDisplayModel source) {
		if (type == FusionDisplayModel.SPLITWINDOW_CHANGED)
			setValuesToModel();
	}
	
	private void showText(int alpha, float spacing) {
		m_alphaValue.setText(Integer.toString(alpha) + "%");
		m_tickSpacingValue.setText(Float.toString(spacing) + " mm");
	}
	
	private void showTickmarkDialog() {
		TickmarkSpacingDialog dialog = new TickmarkSpacingDialog(JOptionPane.getFrameForComponent(this),
				m_model.getSplitWindowTickSpacing());
		
		if (dialog.run())
			m_model.setSplitWindowTickSpacing(dialog.getTickmarkSpacing());
	}
}