The GanttSheet chart area layout can be configured with link line mode, taskbar height, date text format and taskbars rounded to whole days.

Link Line Mode There are 3 modes (GC.Spread.Sheets.GanttSheet.TaskBarLinkMode): toEnd toTop noLinks Taskbar Height You can change the taskbar height with a specific number: Date Format If you add text to the taskbar, you can change its display formats. Available formatters: "yyyy-mm-dd" "yy/m/dd hh:mm" "yy/m/dd" "yyyy/m/dd" "yyyy mmmm dd hh:mm" "yyyy mmmm dd" "mmm dd hh:mm" "'yy mm dd" "mmmm dd" "mmm dd" "ddd yy/m/dd hh:mm" "ddd yy/m/dd" "ddd yy mm dd" "ddd hh:mm" "ddd mm dd" "ddd m/dd" "ddd dd" "m/dd" "dd" "hh:mm" Round Bars To Whole Days The actual task duration is not always whole days, so there is an option that will round these bars to whole days:
/*REPLACE_MARKER*/ /*DO NOT DELETE THESE COMMENTS*/ var myTable; var ganttSheet; var roundBarsToWholeDays = true; window.onload = function() { var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 0 }); initSpread(spread); initSplitView(spread); }; function initSpread(spread) { spread.suspendPaint(); initDataSource(spread); initGanttSheet(spread); spread.resumePaint(); } function initDataSource(spread) { var tableName = "Gantt_Id"; var baseApiUrl = getBaseApiUrl(); var apiUrl = baseApiUrl + "/" + tableName; var dataManager = spread.dataManager(); myTable = dataManager.addTable("myTable", { batch: true, remote: { read: { url: apiUrl } }, schema: { hierarchy: { type: "Parent", column: "parentId" }, columns: { id: { isPrimaryKey: true }, taskNumber: { dataType: "rowOrder" } } } }); } function initGanttSheet(spread) { ganttSheet = spread.addSheetTab(0, "GanttSheet", GC.Spread.Sheets.SheetType.ganttSheet); var view = myTable.addView("ganttView", [ { value: "taskNumber", caption: "NO.", width: 60 }, { value: "name", caption: "Task Name", width: 200 }, { value: "duration", caption: "Duration", width: 90 }, { value: "predecessors", caption: "Predecessors", width: 120, visible: false } ]); view.fetch().then(function() { ganttSheet.bindGanttView(view); ganttSheet.suspendPaint(); var summaryStyleRule = ganttSheet.project.taskStyleRules.getRule("summary"); var summaryStyle =; summaryStyle.leftText = "start"; summaryStyle.rightText = "finish"; = summaryStyle; var layout = ganttSheet.project.layout; layout.linkLineMode = "noLinks"; layout.barHeight = 18; ganttSheet.resumePaint(); }); initSidePanel(ganttSheet); } function initSidePanel(ganttSheet) { var roundBarItem = document.getElementById("round-bar"); var linkTypeItem = document.getElementById("link-type"); var barHeightItem = document.getElementById("bar-height"); var dateFormatItem = document.getElementById("date-format"); var setLayoutItem = document.getElementById("set-layout"); roundBarItem.addEventListener("click", function() { if (roundBarItem.classList.contains("active")) { roundBarItem.classList.remove("active"); roundBarsToWholeDays = false; } else { roundBarItem.classList.add("active"); roundBarsToWholeDays = true; } }); setLayoutItem.addEventListener("click", function() { var layout = ganttSheet.project.layout; ganttSheet.suspendPaint(); layout.linkLineMode = linkTypeItem.value; layout.barHeight = Number(barHeightItem.value); layout.barTextDateFormat = dateFormatItem.value; layout.roundBarsToWholeDays = roundBarsToWholeDays; ganttSheet.resumePaint(); }); } function syncPanel(ganttSheet) { var zoomFactorInput = document.getElementById("zoom-factor"); zoomFactorInput.value = ganttSheet.project.timescale.zoomFactor; } function getBaseApiUrl() { return window.location.href.match(/http.+spreadjs\/demos\//)[0] + 'server/api'; } function initSplitView(spread) { var host = document.getElementById("split-view"); var content = host.getElementsByClassName("split-content")[0]; var panel = host.getElementsByClassName("split-panel")[0]; new SplitView({ host: host, content: content, panel: panel, refreshContent: function() { spread.refresh(); } }); }
<!doctype html> <html style="height:100%;font-size:14px;"> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <link rel="stylesheet" type="text/css" href="$DEMOROOT$/en/purejs/node_modules/@grapecity/spread-sheets/styles/gc.spread.sheets.excel2013white.css"> <link rel="stylesheet" type="text/css" href="$DEMOROOT$/spread/source/splitView/splitView.css"> <!-- Promise Polyfill for IE, --> <script src=""></script> <script src="$DEMOROOT$/en/purejs/node_modules/@grapecity/spread-sheets/dist/gc.spread.sheets.all.min.js" type="text/javascript"></script> <script src="$DEMOROOT$/en/purejs/node_modules/@grapecity/spread-sheets-tablesheet/dist/gc.spread.sheets.tablesheet.min.js" type="text/javascript"></script> <script src="$DEMOROOT$/en/purejs/node_modules/@grapecity/spread-sheets-ganttsheet/dist/gc.spread.sheets.ganttsheet.min.js" type="text/javascript"></script> <script src="$DEMOROOT$/spread/source/splitView/splitView.js" type="text/javascript"></script> <script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script> <script src="app.js" type="text/javascript"></script> <link rel="stylesheet" type="text/css" href="styles.css"> </head> <body> <div id="split-view" class="sample-tutorial"> <div id="ss" class="sample-spreadsheets split-content"></div> <div class="options-container split-panel"> <div class="option-row option-title"> Config the gantt chart layout. </div> <div class="option-block"> <div class="option-row selection-box"> <label for="link-type">Link Mode</label> <select id="link-type"> <option value="noLinks">noLinks</option> <option value="toEnd">toEnd</option> <option value="toTop" selected>toTop</option> </select> </div> </div> <div class="option-block"> <div class="option-row selection-box"> <label for="bar-height">Bar Height</label> <select id="bar-height"> <option value="6">6</option> <option value="8">8</option> <option value="10">10</option> <option value="12" selected>12</option> <option value="14">14</option> <option value="18">18</option> <option value="24">24</option> </select> </div> <div class="option-row selection-box"> <label for="date-format">Date Format</label> <select id="date-format"> <option value="yyyy-mm-dd" selected>Default</option> <option value="yy/m/dd hh:mm">09/1/28 12:33</option> <option value="yy/m/dd">09/1/28</option> <option value="yyyy/m/dd">2009/1/28</option> <option value="yyyy mmmm dd hh:mm">2009 January 28 12:33</option> <option value="yyyy mmmm dd">2009 January 28</option> <option value="mmm dd hh:mm">Jan 28 12:33</option> <option value="'yy mm dd">'09 Jan 28</option> <option value="mmmm dd">January 28</option> <option value="mmm dd">Jan 28</option> <option value="ddd yy/m/dd hh:mm">Wed 09/1/28 12:33</option> <option value="ddd yy/m/dd">Wed 09/1/28</option> <option value="ddd yy mm dd">Wed 09 Jan 28</option> <option value="ddd hh:mm">Wed 12:33</option> <option value="ddd mm dd">Wed Jan 28</option> <option value="ddd m/dd">Wed 1/28</option> <option value="ddd dd">Wed 28</option> <option value="m/dd">1/28</option> <option value="dd">28</option> <option value="hh:mm">12:33</option> </select> </div> </div> <div class="option-block"> <div class="option-row"> <label class="option-checkbox active" id="round-bar">Round Bars To Whole Days</label> <div class="option-info">* checkbox toggle whether round bars to whole days.</div> </div> </div> <div class="option-row"> <input type="button" id="set-layout" class="option-button" value="Set Layout" /> </div> </div> </div> </html>
.options-container { float: right; width: 280px; padding: 12px; height: 100%; box-sizing: border-box; background: #fbfbfb; overflow: auto; box-shadow: inset 0px 0 4px 0 rgba(0,0,0,0.4); } .option-block { background: #fff; padding: 8px; margin: 12px 0; border-radius: 4px; border: 1px dashed #82bc00; box-shadow: 0px 0 6px 0 rgba(0,0,0,0.1); } .option-block.toggle { border: 1px dotted #f7a711; } .option-row { font-size: 14px; box-sizing: border-box; padding: 4px 0; } .option-title { font-weight: bold; color: #656565; } .option-info { font-size: 12px; color: #919191; margin-top: 6px; font-weight: normal; } .option-info.valid { color: #82bc00; } .option-info.toggle { color: #f7a711; } .option-button { width: 100%; padding: 0; line-height: 20px; background: #82bc00; color: #fff; transition: 0.3s; cursor: pointer; outline: none; border-radius: 4px; box-sizing: border-box; box-shadow: 0 1px 4px 0 rgba(0,0,0,0.3); border: none; } .option-button:hover { background: #82bc00; color: #fff; box-shadow: 0 3px 8px 0 rgba(0,0,0,0.4); } .option-checkbox { background: #fff; border: 1px dashed #f7a711; color: #f7a711; padding: 2px 4px; transition: 0.3s; box-sizing: border-box; cursor: pointer; } { color: #fff; background: #f7a711; box-shadow: 0 1px 4px 0 rgba(0,0,0,0.3); border-radius: 4px; } .selection-box { position: relative; } .selection-box > select { text-align: left; width: 100%; height: 20px; padding: 0; line-height: 20px; background: transparent; border: none; border-bottom: 2px solid #656565; color: #656565; transition: 0.3s; cursor: pointer; outline: none; box-sizing: border-box; } .selection-box > select > option { background: white; } .selection-box > select:focus { border-bottom: 2px solid #82bc00; color: #82bc00; box-shadow: 0 2px 6px 0 rgba(0,0,0,0.3); } .selection-box > label { position: absolute; cursor: pointer; font-size: 12px; color: #fff; background: #656565; padding: 0 4px; right: 0; top: 6px; box-shadow: 0 1px 4px 0 rgba(0,0,0,0.3); } .input-box { position: relative; } .input-box > input[type=text] { width: 100%; background: transparent; border: none; color: #656565; border-bottom: 2px solid #656565; outline: none; box-sizing: border-box; transition: 0.3s; } .input-box > input[type=text]:focus { color: #82bc00; border-bottom: 2px solid #82bc00; } .input-box > label { cursor: pointer; position: absolute; right: 0; top: 5px; font-size: 12px; color: #fff; background: #656565; padding: 0 4px; box-shadow: 0 1px 4px 0 rgba(0,0,0,0.3); }