peakmlviewer.dialog.timeseries.EditableChart.java Source code

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Here is the source code for peakmlviewer.dialog.timeseries.EditableChart.java

Source

/* Copyright (C) 2008, Groningen Bioinformatics Centre (http://gbic.biol.rug.nl/)
 * This file is part of mzmatch.
 * 
 * PeakML is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 * 
 * mzmatch 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with PeakML; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

package peakmlviewer.dialog.timeseries;

// java
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Color;
import java.awt.Rectangle;
import java.awt.RenderingHints;

import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;

import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

// eclipse
import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

// jfreechart
import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.plot.*;
import org.jfree.chart.entity.*;

import org.jfree.chart.renderer.category.*;

import org.jfree.data.category.*;

// peakml

// peakmlviewer
import peakmlviewer.action.*;

/**
 * 
 */
public class EditableChart extends Composite implements MouseListener, MouseMotionListener {
    // constructor(s)
    public EditableChart(Composite parent, int style) {
        super(parent, SWT.EMBEDDED | style);

        setLayout(new FillLayout());

        // create the components
        linechart = ChartFactory.createLineChart(null, "", "Intensity", dataset, PlotOrientation.VERTICAL, false, // legend
                false, // tooltips
                false // urls
        );

        CategoryPlot plot = (CategoryPlot) linechart.getPlot();
        ValueAxis yaxis = plot.getRangeAxis();
        yaxis.setRange(0, 1);
        CategoryAxis xaxis = (CategoryAxis) plot.getDomainAxis();
        xaxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
        LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();

        renderer.setSeriesShapesFilled(0, true);
        renderer.setSeriesShapesVisible(0, true);

        linechart.setBackgroundPaint(Color.WHITE);
        linechart.setBorderVisible(false);
        linechart.setAntiAlias(true);

        plot.setBackgroundPaint(Color.WHITE);
        plot.setDomainGridlinesVisible(true);
        plot.setRangeGridlinesVisible(true);

        // add the components
        // --------------------------------------------------------------------------------
        // This uses the SWT-trick for embedding awt-controls in an SWT-Composit.
        try {
            System.setProperty("sun.awt.noerasebackground", "true");
        } catch (NoSuchMethodError error) {
            ;
        }

        java.awt.Frame frame = org.eclipse.swt.awt.SWT_AWT.new_Frame(this);

        // create a few ChartPanel, without the popup-menu (5x false)
        panel = new ChartPanel(linechart, false, false, false, false, false);

        panel.addMouseListener(this);
        panel.addMouseMotionListener(this);
        panel.setRangeZoomable(false);
        panel.setDomainZoomable(false);

        frame.add(panel);
        // --------------------------------------------------------------------------------
    }

    // access
    public void addValue(String x, double y) {
        dataset.addValue(y, "", x);
    }

    public double getValue(String x) {
        return (Double) dataset.getValue("", x);
    }

    public BufferedImage getGraphImage(int width, int height) {
        BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
        Graphics2D g = img.createGraphics();
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        linechart.draw(g, new Rectangle(0, 0, width, height));

        return img;
    }

    // MouseMotionListener
    public void mouseDragged(MouseEvent event) {
        if (entity != null) {
            // calculate the new value
            Point curpoint = event.getPoint();
            Rectangle2D plotrect = panel.getChartRenderingInfo().getPlotInfo().getPlotArea();

            double value = (Double) dataset.getValue(entity.getRowKey(), entity.getColumnKey());
            double newvalue = value - (curpoint.y - prevpoint.y) / plotrect.getHeight();

            if (newvalue < 0)
                newvalue = 0;
            else if (newvalue > 1)
                newvalue = 1;

            dataset.setValue(newvalue, entity.getRowKey(), entity.getColumnKey());

            // set the prevpos to the curpos
            prevpoint = curpoint;
        }
    }

    public void mousePressed(MouseEvent event) {
        Point p = event.getPoint();
        entity = (CategoryItemEntity) panel.getEntityForPoint(p.x, p.y);
        if (entity != null)
            prevpoint = p;
    }

    public void mouseReleased(MouseEvent event) {
        entity = null;
        prevpoint = null;
    }

    public void mouseMoved(MouseEvent event) {
        ;
    }

    public void mouseExited(MouseEvent event) {
        ;
    }

    public void mouseClicked(MouseEvent event) {
        ;
    }

    public void mouseEntered(MouseEvent event) {
        ;
    }

    // data
    /** */
    protected SortIPeak action;

    /** */
    protected ChartPanel panel;
    /** */
    protected JFreeChart linechart;
    /** */
    protected DefaultCategoryDataset dataset = new DefaultCategoryDataset();

    /** */
    protected Point prevpoint = null;
    /** */
    protected CategoryItemEntity entity = null;
}