滚动条配置 | 功能示例 | SpreadJS 在线示例

概述本 Demo 展示了如何通过配置工作簿选项来控制滚动条的显示和行为。Demo 提供了交互式界面，用户可以实时调整滚动条的六种属性：水平/垂直滚动条的显示、滚动提示的显示方式、滚动条最大对齐、滚动条显示最大值，以及是否忽略隐藏行列。实现思路初始化 Workbook 实例，创建工作簿为每个配置选项绑定 change 事件监听器用户勾选复选框或选择下拉菜单时，实时更新 spread.options 的相应属性所有配置更改立即生效，用户可直观看到滚动条行为的变化代码解析控制滚动条显示这段代码为水平滚动条和垂直滚动条的复选框绑定了 change 事件。当用户勾选或取消勾选时，会实时更新 spread.options 的 showHorizontalScrollbar 和 showVerticalScrollbar 属性，控制滚动条的显示与隐藏。配置滚动提示滚动提示通过下拉菜单选择，值为 0-3 的整数，对应 GC.Spread.Sheets.ShowScrollTip 枚举值： 0 - 无（none）：不显示滚动提示 1 - 水平（horizontal）：仅在水平滚动时显示提示 2 - 垂直（vertical）：仅在垂直滚动时显示提示 3 - 两者（both）：水平和垂直滚动时都显示提示当用户拖拽滚动滑块时，会根据配置显示对应的滚动提示信息。设置滚动条对齐和显示范围 scrollbarMaxAlign 控制滚动条是否对齐到工作表的最后一行或列，避免滚动区域超出实际数据范围。启用后，用户无法滚动到工作表最后一行/列的下方或右侧空白区域。 scrollbarShowMax 控制滚动条是否基于工作表的全部行列总数显示滚动范围。启用后，滚动条的滑块大小和位置会反映整个工作表的数据范围。忽略隐藏行列当启用 scrollIgnoreHidden 时，滚动条在计算滚动范围时会忽略隐藏的行或列。以下情况被视为隐藏：行高或列宽为 0 行/列的 visible 属性为 false 被收起的分组行列被筛选掉的行这使得滚动范围更符合用户可见的实际内容，提升用户体验。运行效果勾选或取消勾选"显示水平滚动条"复选框，可以控制水平滚动条的显示与隐藏勾选或取消勾选"显示垂直滚动条"复选框，可以控制垂直滚动条的显示与隐藏从"滚动提示"下拉框选择选项，拖动滚动滑块时会显示相应的提示信息勾选"滚动条最大对齐"后，滚动范围会限制在实际数据区域内勾选"滚动条显示最大值"后，滚动条会基于工作表的总行列数显示勾选"忽略隐藏"后，滚动范围会忽略隐藏的行列，只计算可见内容

window.onload = function() {
var spread = new GC.Spread.Sheets.Workbook(_getElementById('ss'), { sheetCount: 1 });
initSpread(spread);
};
function initSpread(spread) {
var sheet = spread.getActiveSheet();
// Store initial values for restore
var initialRowCount = sheet.getRowCount();
var initialColumnCount = sheet.getColumnCount();
var initialScrollbarMaxAlign = spread.options.scrollbarMaxAlign;
var initialScrollbarShowMax = spread.options.scrollbarShowMax;
// Initialize row/column count editors
_getElementById('columnCount').value = sheet.getColumnCount();
_getElementById('rowCount').value = sheet.getRowCount();
/* Binding settings */
_getElementById('showHorizontalScrollbar').addEventListener('change', function() {
var value = this.value;
spread.options.showHorizontalScrollbar = value === 'auto' ? 'auto' : value === 'true';
if (value === 'auto') {
// Set scrollbarMaxAlign and scrollbarShowMax to true, set column count to 10
spread.options.scrollbarMaxAlign = true;
spread.options.scrollbarShowMax = true;
sheet.setColumnCount(10);
_getElementById('columnCount').value = sheet.getColumnCount();
_getElementById('scrollbarMaxAlign').checked = true;
_getElementById('scrollbarShowMax').checked = true;
} else {
// Restore column count
sheet.setColumnCount(initialColumnCount);
_getElementById('columnCount').value = sheet.getColumnCount();
// Only restore scrollbarMaxAlign and scrollbarShowMax if showVerticalScrollbar is not 'auto'
if (_getElementById('showVerticalScrollbar').value !== 'auto') {
spread.options.scrollbarMaxAlign = initialScrollbarMaxAlign;
spread.options.scrollbarShowMax = initialScrollbarShowMax;
_getElementById('scrollbarMaxAlign').checked = initialScrollbarMaxAlign;
_getElementById('scrollbarShowMax').checked = initialScrollbarShowMax;
}
}
});
_getElementById('showVerticalScrollbar').addEventListener('change', function() {
var value = this.value;
spread.options.showVerticalScrollbar = value === 'auto' ? 'auto' : value === 'true';
if (value === 'auto') {
// Set scrollbarMaxAlign and scrollbarShowMax to true, set row count to 10
spread.options.scrollbarMaxAlign = true;
spread.options.scrollbarShowMax = true;
sheet.setRowCount(10);
_getElementById('rowCount').value = sheet.getRowCount();
_getElementById('scrollbarMaxAlign').checked = true;
_getElementById('scrollbarShowMax').checked = true;
} else {
// Restore row count
sheet.setRowCount(initialRowCount);
_getElementById('rowCount').value = sheet.getRowCount();
// Only restore scrollbarMaxAlign and scrollbarShowMax if showHorizontalScrollbar is not 'auto'
if (_getElementById('showHorizontalScrollbar').value !== 'auto') {
spread.options.scrollbarMaxAlign = initialScrollbarMaxAlign;
spread.options.scrollbarShowMax = initialScrollbarShowMax;
_getElementById('scrollbarMaxAlign').checked = initialScrollbarMaxAlign;
_getElementById('scrollbarShowMax').checked = initialScrollbarShowMax;
}
}
});
_getElementById('scrollbarMaxAlign').addEventListener('change', function() {
spread.options.scrollbarMaxAlign = this.checked;
initialScrollbarMaxAlign = this.checked;
});
_getElementById('scrollbarShowMax').addEventListener('change', function() {
spread.options.scrollbarShowMax = this.checked;
initialScrollbarShowMax = this.checked;
});
_getElementById('optShowScrollTip').addEventListener('change', function() {
var result = parseInt(this.value);
spread.options.showScrollTip = result;
});
_getElementById('scrollIgnoreHidden').addEventListener('change', function() {
spread.options.scrollIgnoreHidden = this.checked;
});
_getElementById('columnCount').addEventListener('change', function() {
var value = parseInt(this.value);
if (value > 0) {
sheet.setColumnCount(value);
initialColumnCount = value;
}
});
_getElementById('rowCount').addEventListener('change', function() {
var value = parseInt(this.value);
if (value > 0) {
sheet.setRowCount(value);
initialRowCount = value;
}
});
}
function _getElementById(id){
return document.getElementById(id);
}

<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta name="spreadjs culture" content="zh-cn" />
<meta charset="utf-8" />
<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">
<script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/dist/gc.spread.sheets.all.min.js"
type="text/javascript"></script>
<script src="$DEMOROOT$/spread/source/data/data.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/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 class="sample-tutorial">
<div id="ss" class="sample-spreadsheets"></div>
<div class="options-container">
<p>修改以下不同属性，查看它们对工作簿滚动条不同方面的影响。</p>
<div class="option-row">
<label>显示滚动提示:</label>
<select id="optShowScrollTip">
<option value="0" selected="selected">无</option>
<option value="1">水平</option>
<option value="2">垂直</option>
<option value="3">两者</option>
</select>
</div>
<hr />
<div class="option-row">
<label for="columnCount">列数:</label>
<input type="number" id="columnCount" min="1" value="20"
style="width: 100px; height: 19px; padding: 0; box-sizing: border-box;" />
</div>
<div class="option-row">
<label for="showHorizontalScrollbar">水平滚动条:</label>
<select id="showHorizontalScrollbar">
<option value="true" selected>显示</option>
<option value="false">隐藏</option>
<option value="auto">自动</option>
</select>
</div>
<label>设置水平滚动条的可见性。使用“auto”可自动显示。</label>
<div class="option-row">
<label for="rowCount">行数:</label>
<input type="number" id="rowCount" min="1" value="200"
style="width: 100px; height: 19px; padding: 0; box-sizing: border-box;" />
</div>
<div class="option-row">
<label for="showVerticalScrollbar">垂直滚动条:</label>
<select id="showVerticalScrollbar">
<option value="true" selected>显示</option>
<option value="false">隐藏</option>
<option value="auto">自动</option>
</select>
</div>
<label>设置垂直滚动条的可见性。使用“auto”可自动显示。</label>
<div class="option-row">
<input type="checkbox" id="scrollbarMaxAlign" />
<label for="scrollbarMaxAlign">滚动条最大对齐</label>
</div>
<label>设置此项可将滚动限制在最大行数和列数范围内。</label>
<div class="option-row">
<input type="checkbox" id="scrollbarShowMax" checked="checked" />
<label for="scrollbarShowMax">滚动条显示最大值</label>
</div>
<label>设置此项以使滚动条显示整个工作表的最大范围。</label>
<hr />
<div class="option-row">
<input type="checkbox" id="scrollIgnoreHidden" />
<label for="scrollIgnoreHidden">滚动时忽略隐藏项</label>
</div>
<label>设置此项以忽略隐藏的行或列。</label>
</div>
</div>
</body>
</html>

.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
.sample-spreadsheets {
width: calc(100% - 280px);
height: 100%;
overflow: hidden;
float: left;
}
.options-container {
float: right;
width: 280px;
padding: 12px;
height: 100%;
box-sizing: border-box;
background: #fbfbfb;
overflow: auto;
}
.option-row {
font-size: 14px;
padding: 5px;
margin-top: 10px;
}
.option-row select {
width: 100px;
}
label {
margin-bottom: 6px;
}
input {
padding: 4px 6px;
}
input[type=button] {
margin-top: 6px;
display: block;
}
hr {
border-color: #fff;
opacity: .2;
margin-top: 20px;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}