缩放系数
缩放系数是一个数值，表示时间刻度的缩放系数。要更改它，请调用时间刻度的缩放函数。
缩放
您可以在时间刻度上进行缩放：
自动缩放
您也可以根据每个层上的刻度标签自动将时间刻度缩放到合适的系数。
缩放到
您可以将时间刻度缩放到特定系数。
以下代码将时间刻度缩放到显示视口中的目标日期范围。请注意，时间刻度将调整到最近的刻度。
调整时间刻度单位
一个布尔值表示是否根据缩放系数调整时间刻度的单位。这在API中默认是true：
timescale.zoomIn(adjustTierUnit);
timescale.zoomOut(adjustTierUnit);
timescale.zoomTo(zoomFactor, adjustTierUnit);
timescale.zoomToRange(startDate, endDate, adjustTierUnit);
/*REPLACE_MARKER*/
/*DO NOT DELETE THESE COMMENTS*/
var myTable;
var ganttSheet;
var adjustTierUnit = 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 }
]);
view.fetch().then(function() {
ganttSheet.bindGanttView(view);
}).then(function() {
ganttSheet.project.timescale.zoomOut();
});
initSidePanel(ganttSheet);
}
function initSidePanel(ganttSheet) {
var adjustTierUnitCheckbox = document.getElementById("adjust-tier-unit");
var zoomAutoButton = document.getElementById("zoom-auto");
var zoomInButton = document.getElementById("zoom-in");
var zoomOutButton = document.getElementById("zoom-out");
var zoomFactorInput = document.getElementById("zoom-factor");
var zoomToButton = document.getElementById("zoom-to");
var zoomToTypeSelect = document.getElementById("zoom-to-type");
var zoomToRangeButton = document.getElementById("zoom-to-range");
adjustTierUnitCheckbox.addEventListener("click", function() {
if (adjustTierUnitCheckbox.classList.contains("active")) {
adjustTierUnitCheckbox.classList.remove("active");
adjustTierUnit = false;
} else {
adjustTierUnitCheckbox.classList.add("active");
adjustTierUnit = true;
}
});
zoomAutoButton.addEventListener("click", function() {
ganttSheet.project.timescale.zoomAuto();
syncPanel(ganttSheet);
});
zoomInButton.addEventListener("click", function() {
ganttSheet.project.timescale.zoomIn(adjustTierUnit);
syncPanel(ganttSheet);
});
zoomOutButton.addEventListener("click", function() {
ganttSheet.project.timescale.zoomOut(adjustTierUnit);
syncPanel(ganttSheet);
});
zoomToButton.addEventListener("click", function() {
var factor = Number(zoomFactorInput.value);
if (!isNaN(factor)) {
ganttSheet.project.timescale.zoomTo(factor, adjustTierUnit);
syncPanel(ganttSheet);
}
});
zoomToRangeButton.addEventListener("click", function() {
var zoomToType = zoomToTypeSelect.value;
var project = ganttSheet.project;
if (zoomToType === "0") {
var task = ganttSheet.getActiveTask();
if(task && task.finish && task.start) {
project.timescale.zoomToRange(task.start, task.finish);
}
} else if (zoomToType === "1") {
var startDate = Math.min.apply(null, project.tasks.filter(function(t) {return t.start}).map(function(t) {return t.start.valueOf()}));
var finishDate = Math.max.apply(null, project.tasks.filter(function(t) {return t.finish}).map(function(t) {return t.finish.valueOf()}));
project.timescale.zoomToRange(new Date(startDate), new Date(finishDate));
} else if (zoomToType === "2") {
let count = Number(zoomToRangeCountInput.value);
let unit = Number(zoomToRangeUnitSelect.value);
let start = project.timescale.currentDate;
let defaultMilliseconds = [
365 * 24 * 60 * 60 * 1000, // Years= 0,
365 / 2 * 24 * 60 * 60 * 1000, // HalfYears= 1,
365 / 4 * 24 * 60 * 60 * 1000, // Quarters= 2,
30 * 24 * 60 * 60 * 1000, // Months= 3,
10 * 24 * 60 * 60 * 1000, // ThirdsOfMonth= 4,
7 * 24 * 60 * 60 * 1000, // Weeks= 5,
24 * 60 * 60 * 1000, // Days= 6,
60 * 60 * 1000, // Hours= 7,
60 * 1000, // Minutes= 8
];
let finish = new Date(start.valueOf() + defaultMilliseconds[unit] * count);
project.timescale.zoomToRange(start, finish);
}
syncPanel(ganttSheet);
});
}
function syncPanel(ganttSheet) {
var zoomFactorInput = document.getElementById("zoom-factor");
zoomFactorInput.value = ganttSheet.project.timescale.zoomFactor;
}
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
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-tablesheet/dist/gc.spread.sheets.tablesheet.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-ganttsheet/dist/gc.spread.sheets.ganttsheet.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-resources-zh/dist/gc.spread.sheets.resources.zh.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">
Zoom the ganttsheet chart area.
</div>
<div class="option-block">
<div class="option-row">
<label class="option-checkbox active" id="adjust-tier-unit">Adjust Tier Unit</label>
<div class="option-info">* checkbox toggle whether adjust tier unit or not when zoom. It affects the
result of zoom in, zoom out, zoom to and zoom to range.</div>
</div>
</div>
<div class="option-block">
<div class="option-row">
<input type="button" id="zoom-auto" class="option-button" value="Zoom Auto" />
</div>
<div class="option-row">
<input type="button" id="zoom-in" class="option-button" value="Zoom In" />
</div>
<div class="option-row">
<input type="button" id="zoom-out" class="option-button" value="Zoom Out" />
</div>
</div>
<div class="option-block">
<div class="option-row input-box">
<label for="zoom-factor">Zoom Factor</label>
<input type="text" id="zoom-factor" value="1" />
<div class="option-info valid">* valid value: number</div>
</div>
<div class="option-row">
<input type="button" id="zoom-to" class="option-button" value="Zoom To" />
</div>
<div class="option-row selection-box">
<label for="zoom-to-type">Demo Range</label>
<select id="zoom-to-type">
<option value="0">Selected Task</option>
<option value="1">Entire Project</option>
</select>
</div>
<div class="option-row">
<input type="button" id="zoom-to-range" class="option-button" value="Zoom To Range" />
</div>
</div>
</div>
</div>
</html>
.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;
}
.option-checkbox.active {
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);
}
