criteria property

List<ColorConditionValue> criteria
getter/setter pair

Gets a collection of individual ConditionValue objects.

// Create a new Excel Document.
final Workbook workbook = Workbook();

// Accessing sheet via index.
final Worksheet sheet = workbook.worksheets[0];
sheet.getRangeByName('A1').number = 12;
sheet.getRangeByName('A2').number = 29;
sheet.getRangeByName('A3').number = 41;
sheet.getRangeByName('A4').number = 84;
sheet.getRangeByName('A5').number = 90;
sheet.getRangeByName('A6').number = 112;
sheet.getRangeByName('A7').number = 131;
sheet.getRangeByName('A8').number = 20;

//Create color scale for the data in specified range.
final ConditionalFormats conditionalFormats =
    sheet.getRangeByName('A1:A8').conditionalFormats;
final ConditionalFormat conditionalFormat =
    conditionalFormats.addCondition();

// set colorscale CF.
conditionalFormat.formatType = ExcelCFType.colorScale;
final ColorScale colorScale = conditionalFormat.colorScale!;

//Sets 3 - color scale and its constraints
colorScale.setConditionCount(3);
colorScale.criteria[0].formatColor = '#63BE7B';
colorScale.criteria[0].type = ConditionValueType.lowestValue;

colorScale.criteria[1].formatColor = '#FFFFFF';
colorScale.criteria[1].type = ConditionValueType.number;
colorScale.criteria[1].value = "70";

colorScale.criteria[2].formatColor = '#F8696B';
colorScale.criteria[2].type = ConditionValueType.highestValue;

final List<int> bytes = workbook.saveAsStream();
File('ColorScale.xlsx').writeAsBytes(bytes);
workbook.dispose();

Implementation

late List<ColorConditionValue> criteria;