按像素滚动时间刻度
您可以通过像素滚动甘特图时间刻度，并且它将向下取整并滚动到最近的刻度(最近刻度：ganttsheet.project.timescale.pixelPerDay)。
注意：正像素数量将向后滚动，而负像素数量将向前滚动。
按一个刻度滚动时间刻度
您可以按一个刻度滚动时间刻度：
按指定单位滚动时间刻度
您还可以按特定单位的计数滚动时间刻度。
滚动单位是GC.Spread.Sheets.GanttSheet.TimescaleUnit，其中包含：
years
halfYears
quarters
months
thirdsOfMonth
weeks
days
hours
minutes
注意：时间刻度将滚动到最近的刻度。正像素数量将向前滚动，负像素数量将向后滚动。
按特定日期滚动时间刻度
您可以滚动时间刻度到特定日期。
注意：时间刻度将滚动到最近的刻度。
您可以控制视口的百分比，其中目标日期要滚动到的位置。默认值为0，将滚动到视口左侧的目标日期。
/*REPLACE_MARKER*/
/*DO NOT DELETE THESE COMMENTS*/
var myTable;
var ganttSheet;
var isForward = false;
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 }
]);
view.fetch().then(function() {
ganttSheet.bindGanttView(view);
});
initSidePanel(ganttSheet);
}
function initSidePanel(ganttSheet) {
var scrollPixelInput = document.getElementById("scroll-pixel");
var scrollByPixelButton = document.getElementById("scroll-by-pixel");
var isForwardCheckbox = document.getElementById("is-forward");
var scrollOneTickButton = document.getElementById("scroll-one-tick");
var scrollUnitSelect = document.getElementById("scroll-unit");
var scrollCountInput = document.getElementById("scroll-count");
var scrollByUnitButton = document.getElementById("scroll-by-unit");
var scrollDateInput = document.getElementById("scroll-date");
var scrollPercentInput = document.getElementById("scroll-percent");
var scrollToButton = document.getElementById("scroll-to");
var currentDate = new Date();
scrollDateInput.value = `${currentDate.getFullYear()}/${currentDate.getMonth() + 1}/${currentDate.getDate()}`;
scrollByPixelButton.addEventListener("click", function() {
var scrollPixel = Number(scrollPixelInput.value);
ganttSheet.project.timescale.scroll(scrollPixel);
});
isForwardCheckbox.addEventListener("click", function() {
if (isForwardCheckbox.classList.contains("active")) {
isForwardCheckbox.classList.remove("active");
isForward = false;
isForwardCheckbox.innerHTML = "Backward";
} else {
isForwardCheckbox.classList.add("active");
isForward = true;
isForwardCheckbox.innerHTML = "Forward";
}
});
scrollOneTickButton.addEventListener("click", function() {
ganttSheet.project.timescale.scrollOneTick(isForward);
});
scrollByUnitButton.addEventListener("click", function() {
var scrollCount = Number(scrollCountInput.value);
var scrollUnit = Number(scrollUnitSelect.value);
ganttSheet.project.timescale.scrollBy(scrollCount, scrollUnit);
});
scrollToButton.addEventListener("click", function() {
var scrollDate = new Date(scrollDateInput.value);
var scrollPercent = Number(scrollPercentInput.value);
ganttSheet.project.timescale.scrollTo(scrollDate, scrollPercent);
});
}
function getBaseApiUrl() {
return window.location.href.match(/http.+spreadjs\/SpreadJSTutorial\//)[0] + 'server/api';
}
function initSplitView(spread) {
var host = document.getElementById("split-view");
var content = host.getElementsByClassName("split-content")[0];
var panel = host.getElementsByClassName("split-panel")[0];
new SplitView({
host: host,
content: content,
panel: panel,
refreshContent: function() {
spread.refresh();
}
});
}
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta charset="utf-8" />
<meta name="spreadjs culture" content="zh-cn" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" type="text/css"
href="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<link rel="stylesheet" type="text/css" href="$DEMOROOT$/spread/source/splitView/splitView.css">
<!-- Promise Polyfill for IE, https://www.npmjs.com/package/promise-polyfill -->
<script src="https://cdn.jsdelivr.net/npm/promise-polyfill@8/dist/polyfill.min.js"></script>
<script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/dist/gc.spread.sheets.all.min.js"
type="text/javascript"></script>
<script
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<script src="$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">
<div id="ss" class="split-content"></div>
<div class="split-panel">
<div class="option-row option-title">
Scroll the ganttsheet chart area.
</div>
<div class="option-block">
<div class="option-row input-box">
<label for="scroll-pixel">Scroll Pixel</label>
<input type="text" id="scroll-pixel" value="60" />
<div class="option-info valid">* valid value: integer, could be negative</div>
</div>
<div class="option-row">
<input type="button" id="scroll-by-pixel" class="option-button" value="Scroll By Pixel" />
</div>
</div>
<div class="option-block">
<div class="option-row">
<label class="option-checkbox" id="is-forward">Backward</label>
<div class="option-info">* checkbox toggle between "Forward" and "Backward"</div>
</div>
<div class="option-row">
<input type="button" id="scroll-one-tick" class="option-button" value="Scroll One Tick" />
</div>
</div>
<div class="option-block">
<div class="option-row selection-box">
<label for="scroll-unit">Scroll Unit</label>
<select id="scroll-unit">
<option value="1">years</option>
<option value="2">halfYears</option>
<option value="3">quarters</option>
<option value="4">months</option>
<option value="5">thirdsOfMonth</option>
<option value="6">weeks</option>
<option value="7" selected>days</option>
<option value="8">hours</option>
<option value="9">minutes</option>
</select>
</div>
<div class="option-row input-box">
<label for="scroll-count">Scroll Count</label>
<input type="text" id="scroll-count" value="1" />
<div class="option-info valid">* valid value: integer, could be negative</div>
</div>
<div class="option-row">
<input type="button" id="scroll-by-unit" class="option-button" value="Scroll By Unit" />
</div>
</div>
<div class="option-block">
<div class="option-row input-box">
<label for="scroll-date">Scroll Date</label>
<input type="text" id="scroll-date" />
<div class="option-info valid">* valid value: format 2022/1/3 or 2022/1/3 12:00:00</div>
</div>
<div class="option-row input-box">
<label for="scroll-percent">Percent Of Viewport</label>
<input type="text" id="scroll-percent" value="0.5" />
<div class="option-info valid">* valid value: number between 0~1</div>
</div>
<div class="option-row">
<input type="button" id="scroll-to" class="option-button" value="Scroll To Date" />
</div>
</div>
</div>
</div>
</html>
.option-block {
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.option-block.toggle {
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.option-title {
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color: #656565;
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.option-button {
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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;
}
.option-checkbox.active {
color: #fff;
background: #f7a711;
box-shadow: 0 1px 4px 0 rgba(0,0,0,0.3);
border-radius: 4px;
}
.selection-box {
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}
.selection-box > select {
text-align: left;
width: 100%;
height: 20px;
padding: 0;
line-height: 20px;
background: transparent;
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border-bottom: 2px solid #656565;
color: #656565;
transition: 0.3s;
cursor: pointer;
outline: none;
box-sizing: border-box;
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.selection-box > select > option {
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color: #fff;
background: #656565;
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