com.panayotis.gnuplot.terminal.SVGTerminal Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of pa-toolbox-extern-javaplot Show documentation

This JavaPlot library has not been written by me (the author of the PA-Toolbox project). See the given URL for the original JavaPlot project. These files have been extracted from the download JavaPlot-0.5.0.tar.bz2. It is included here just to resolve external dependencies of other PA-Toolbox submodules.

The newest version!

/* Copyright (c) 2007-2014 by panayotis.com
 *
 * JavaPlot 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, version 2.
 *
 * JavaPlot is free 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 CrossMobile; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Created on October 24, 2007, 7:47 PM
 */

package com.panayotis.gnuplot.terminal;

import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.lang.reflect.InvocationTargetException;
import java.net.URI;
import javax.swing.JPanel;

/**
 * This Terminal uses SVG graphics to display data on screen. It relies on the
 * open source project SVGSalamander (http://svgsalamander.dev.java.net/)
 *
 * @author teras
 */
public class SVGTerminal extends TextFileTerminal {

    /**
     * Creates a new instance of SVGTerminal
     */
    public SVGTerminal() {
        this("");
    }

    /**
     * Creates a new instance of SVGTerminal and store output to a specific file
     *
     * @param filename
     */
    public SVGTerminal(String filename) {
        super("svg", filename);
    }

    /**
     * Process output of this terminal. Typically this is used to overcome a bug
     * in SVGSalamander
     *
     * @param stdout The gnuplot output stream
     * @return Return the error as a String, if an error occured.
     */
    public String processOutput(InputStream stdout) {
        String out_status = super.processOutput(stdout);
        if (output != null && getOutputFile().equals(""))
            output = output.replace("currentColor", "black");
        return out_status;
    }

    /**
     * Retrieve a JPanel whith the provided SVG drawn on it.
     *
     * @return The JPanel with the SVG drawing
     * @throws java.lang.ClassNotFoundException If the SVGSalamander library
     * could not be found, or if any other error occured.
     */
    public JPanel getPanel() throws ClassNotFoundException {
        /*
         * Use reflection API to create the representation in SVG format
         */
        Object svgDisplayPanel = null;
        if (output == null || output.equals(""))
            throw new NullPointerException("SVG output is empty; probably SVG terminal is not used or plot() not executed yet.");
        try {
            svgDisplayPanel = Class.forName("com.kitfox.svg.SVGDisplayPanel").newInstance();
            Object universe = Class.forName("com.kitfox.svg.SVGUniverse").newInstance();
            Object diagram = null;

            universe.getClass().getMethod("loadSVG", Reader.class, String.class).invoke(universe, new StringReader(output), "plot");
            URI uri = (URI) universe.getClass().getMethod("getStreamBuiltURI", String.class).invoke(universe, "plot");
            diagram = universe.getClass().getMethod("getDiagram", URI.class).invoke(universe, uri);
            svgDisplayPanel.getClass().getMethod("setDiagram", Class.forName("com.kitfox.svg.SVGDiagram")).invoke(svgDisplayPanel, diagram);
        } catch (NoSuchMethodException e) {
            throw new ClassNotFoundException(e.getMessage());
        } catch (InstantiationException e) {
            throw new ClassNotFoundException(e.getMessage());
        } catch (IllegalAccessException e) {
            throw new ClassNotFoundException(e.getMessage());
        } catch (InvocationTargetException e) {
            throw new ClassNotFoundException(e.getMessage());
        } catch (Exception e) {
            throw new ClassNotFoundException(e.getMessage());
        }

        return (JPanel) svgDisplayPanel;
    }
}