Example usage for org.jfree.chart.imagemap OverLIBToolTipTagFragmentGenerator OverLIBToolTipTagFragmentGenerator

Introduction

In this page you can find the example usage for org.jfree.chart.imagemap OverLIBToolTipTagFragmentGenerator OverLIBToolTipTagFragmentGenerator.

Prototype

public OverLIBToolTipTagFragmentGenerator() 

Source Link

Document

Creates a new instance.

Usage

From source file:org.webguitoolkit.ui.controls.chart.Chart.java

/**
 * generate the image an send the url to the client
 *///from  w w w .j  ava2 s  . c  o m
public void load() {
    HttpSession session = Page.getServletRequest().getSession(true);
    ChartRenderingInfo info = new ChartRenderingInfo();
    JFreeChart chart = getModel().getChart();
    if (chart == null)
        return; // happen for example in the init process

    try {
        String filename = ServletUtilities.saveChartAsPNG(chart, getWidth(), getHeight(), info, session);
        filename = URLEncoder.encode(filename, "UTF-8");
        String mapName = id4Map() + filename + ".name";
        String imagemap = ImageMapUtilities.getImageMap(mapName, info, new OverLIBToolTipTagFragmentGenerator(),
                null); // no urls   

        // transfer image map to clinet
        getContext().add(id4Map(), imagemap, IContext.TYPE_HTML, IContext.STATUS_NOT_EDITABLE);
        // the img-tag to use the map
        getContext().add(id4Img() + ".usemap", "#" + mapName, IContext.TYPE_ATT, IContext.STATUS_NOT_EDITABLE);
        // transfer src- atribute to client

        String imageUrl = "Chart/DisplayChart?filename=" + filename;
        getContext().add(id4Img() + ".src", imageUrl, IContext.TYPE_ATT, IContext.STATUS_NOT_EDITABLE);
    } catch (IOException e) {
        e.printStackTrace();
        throw new WGTException(e);
    }
}

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