org.openaltimeter.desktopapp.annotations.XYHeightAnnotation.java Source code

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Here is the source code for org.openaltimeter.desktopapp.annotations.XYHeightAnnotation.java

Source

/*
openaltimeter -- an open-source altimeter for RC aircraft
Copyright (C) 2010-2011  Jan Steidl, Jony Hudson
http://openaltimeter.org
    
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 3 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, see <http://www.gnu.org/licenses/>.
 */
package org.openaltimeter.desktopapp.annotations;

import java.awt.BasicStroke;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;

import org.jfree.chart.annotations.XYTextAnnotation;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.chart.plot.XYPlot;
import org.jfree.text.TextUtilities;
import org.jfree.ui.RectangleEdge;

@SuppressWarnings("serial")
public class XYHeightAnnotation extends XYTextAnnotation {

    private static int DOT_SIZE = 4;

    public XYHeightAnnotation(String text, double x, double y, Paint color) {
        super(text, x, y);
        setPaint(color);
    }

    /* Based on XYTextAnnotation draw method */
    @Override
    public void draw(Graphics2D g2, XYPlot plot, Rectangle2D dataArea, ValueAxis domainAxis, ValueAxis rangeAxis,
            int rendererIndex, PlotRenderingInfo info) {
        PlotOrientation orientation = plot.getOrientation();
        RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(plot.getDomainAxisLocation(), orientation);
        RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(plot.getRangeAxisLocation(), orientation);

        float anchorX = (float) domainAxis.valueToJava2D(this.getX(), dataArea, domainEdge);
        float anchorY = (float) rangeAxis.valueToJava2D(this.getY(), dataArea, rangeEdge);

        if (orientation == PlotOrientation.HORIZONTAL) {
            float tempAnchor = anchorX;
            anchorX = anchorY;
            anchorY = tempAnchor;
        }

        g2.setFont(getFont());
        Shape hotspot = TextUtilities.calculateRotatedStringBounds(getText(), g2, anchorX, anchorY, getTextAnchor(),
                getRotationAngle(), getRotationAnchor());
        if (this.getBackgroundPaint() != null) {
            g2.setPaint(this.getBackgroundPaint());
            g2.fill(hotspot);
        }

        g2.setPaint(getPaint());
        TextUtilities.drawRotatedString(getText(), g2, anchorX + (3.6f * DOT_SIZE), anchorY + (0.2f * DOT_SIZE),
                getTextAnchor(), getRotationAngle(), getRotationAnchor());
        if (this.isOutlineVisible()) {
            g2.setStroke(this.getOutlineStroke());
            g2.setPaint(this.getOutlinePaint());
            g2.draw(hotspot);
        }

        // cross drawing
        //      g2.setPaint(getPaint());
        //      g2.setStroke(new BasicStroke(1.0f));
        //      g2.drawLine((int) anchorX - CROSS_SIZE / 2, (int) anchorY, (int) anchorX + CROSS_SIZE / 2, (int) anchorY);
        //      g2.drawLine((int) anchorX, (int) anchorY - CROSS_SIZE / 2, (int) anchorX, (int) anchorY + CROSS_SIZE / 2);

        // dot drawing
        g2.setPaint(getPaint());
        g2.setStroke(new BasicStroke(1.0f));
        Ellipse2D e = new Ellipse2D.Double(anchorX - DOT_SIZE / 2, anchorY - DOT_SIZE / 2, DOT_SIZE, DOT_SIZE);
        g2.fill(e);

        String toolTip = getToolTipText();
        String url = getURL();
        if (toolTip != null || url != null) {
            addEntity(info, hotspot, rendererIndex, toolTip, url);
        }
    }

}