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       
(Showing Draft Content)

Pattern Fill in Charts

SpreadJS provides support for pattern fill in charts. The PatternType enumeration in SpreadJS API allows the users to apply different pattern styles in a chart in the worksheet. You can also specify the foreground and background color for it.


This feature helps the users to enhance the chart customization capabilities and add emphasis to the chart elements by applying pattern-fill. The following are the chart elements that support the pattern fill feature:

  • Datapoint

  • Chart area plot

  • Area data series

  • Chart title

  • Data labels

  • Legend

  • Header

  • Footer axis

  • Labels

  • Overlays

SpreadJS supports 48 built-in pattern styles. Refer to the following chart that uses pattern-fill to depict the world population.




The following code sanple uses PatternType property to apply pattern fill to the chart elements.

$(document).ready(function () {
    // initializing Spread
    var spread = new GC.Spread.Sheets.Workbook(document.getElementById('ss'), { sheetCount: 1 });

    // Get the activesheet
    var sheet = spread.getSheet(0);

    // Set Column Width
    sheet.setColumnWidth(2, 100);
    sheet.setColumnWidth(4, 100);

    // Create Data Array
    var dataArray =
    [
        ['Region', 'Subregion', 'country', 'Population'],
        ['Asia', 'Southern', 'India', 1354051854],
        [, , 'Pakistan', 200813818],
        [, , 'Bangladesh', 166368149],
        [, , 'Others', 170220300],
        [, 'Eastern', 'China', 1415045928],
        [, , 'Japan', 127185332],
        [, , 'Others', 111652273],
        [, 'South-Eastern', , 655636576],
        [, 'Western', , 272298399],
        [, 'Central', , 71860465],
        ['Africa', 'Eastern', , 433643132],
        [, 'Western', , 381980688],
        [, 'Northern', , 237784677],
        [, 'Others', , 234512021],
        ['Europe', , , 742648010],
        ['Others', , , 1057117703]
    ];

    // Set Array
    sheet.setArray(1, 1, dataArray);
    var treemapChart = sheet.charts.add('chart1', GC.Spread.Sheets.Charts.ChartType.treemap, 450, 0, 500, 500, "B2:E18");

    // Get title and set it's backcolor with a pattern
    var title = treemapChart.title();
    title.fontSize = "24.00";
    title.text = "WORLD POPULATION";
    title.backColor = {
        type: GC.Spread.Sheets.Charts.PatternType.divot,
        foregroundColor: "Orange",
       backgroundColor: "pink",
    };
    treemapChart.title(title);

    // get dataPoints and set it's patternType
    var dataPoints = treemapChart.series().dataPoints();
    var fillColors = [{
            type: GC.Spread.Sheets.Charts.PatternType.sphere,
            foregroundColor: "LightGreen",
            backgroundColor: "lightgray",
        }, {
            type: GC.Spread.Sheets.Charts.PatternType.darkUpwardDiagonal,
            foregroundColor: "pink",
            backgroundColor: "white",
        },
        {
            type: GC.Spread.Sheets.Charts.PatternType.divot,
            foregroundColor: "purple",
            backgroundColor: "white",
        },
        {
            type: GC.Spread.Sheets.Charts.PatternType.dottedPercent40,
            foregroundColor: "LightBlue",
            backgroundColor: "white",
        }
    ];
    for (var i = 0; i < fillColors.length; i++) {
        var dataPoint = dataPoints.get(i);
        dataPoint.fillColor = fillColors[i];
        dataPoints.set(i, dataPoint);
    }

    // get datalabels and set it's backcolor to black
    var dataLabels = treemapChart.dataLabels();
    dataLabels.color = 'black';
    treemapChart.dataLabels(dataLabels);
});