Example usage for org.jfree.chart ChartUtilities getImageMap

Introduction

In this page you can find the example usage for org.jfree.chart ChartUtilities getImageMap.

Prototype

public static String getImageMap(String name, ChartRenderingInfo info) 

Source Link

Document

Creates an HTML image map.

Usage

From source file:lucee.runtime.tag.Chart.java

private void writeOut(JFreeChart jfc) throws PageException, IOException {
    final ChartRenderingInfo info = new ChartRenderingInfo();

    // map name/*from   www  . j ava  2s  . c  o  m*/
    chartIndex++;
    if (chartIndex < 0)
        chartIndex = 0;
    String mapName = "chart_" + chartIndex;
    setUrl(jfc);

    // write out to variable
    if (!StringUtil.isEmpty(name)) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        copy(baos, jfc, info);
        pageContext.setVariable(name, baos.toByteArray());
        return;
    }

    // write out as link
    String id = Md5.getDigestAsString(JavaConverter.serialize(this));
    Resource graph = pageContext.getConfig().getTempDirectory().getRealResource("graph");
    Resource res = graph.getRealResource(id);
    if (!res.exists()) {
        clean(graph);
        copy(res.getOutputStream(), jfc, info);
    } else {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        copy(baos, jfc, info);
    }

    String contextPath = pageContext.getHttpServletRequest().getContextPath();
    contextPath = StringUtil.isEmpty(contextPath) ? "/" : contextPath + "/";
    String src = contextPath + "lucee/graph.cfm?img=" + id + "&type=" + formatToString(format);

    if (!StringUtil.isEmpty(source)) {
        pageContext.setVariable(source, src);
        return;
    }
    try {
        if (showtooltip || !StringUtil.isEmpty(url)) {
            String map = ChartUtilities.getImageMap(mapName, info).trim();
            pageContext.write(map);
        }
        pageContext.write("<img border=\"0\" usemap=\"#" + mapName + "\" src=\"" + src + "\">");
    } catch (IOException e) {
        throw Caster.toPageException(e);
    }
}

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From source file:eu.planets_project.tb.gui.backing.ExperimentBean.java

public String getResultChartUrl() {
    try {// w  w  w. jav a  2 s  .c o  m
        ExperimentChartServlet ec = new ExperimentChartServlet();
        chart = ec.createWallclockChart("" + this.getExperiment().getEntityID());
        // Pick into the session...
        HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext()
                .getRequest();
        HttpSession session = request.getSession();
        //  Write the chart image to the temporary directory
        ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
        this.graphId = ServletUtilities.saveChartAsPNG(chart, 600, 500, info, session);
        this.graphImageMap = ChartUtilities.getImageMap(graphId, info);
        this.graphUrl = request.getContextPath() + "/servlet/DisplayChart?filename=" + graphId;
        return this.graphUrl;
    } catch (Exception e) {
        log.error("Failure while generating graph: " + e);
        e.printStackTrace();
        return null;
    }
}

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