此示例显示如何自定义工作簿背景。
此示例显示如何自定义工作簿背景。
你可以设置 backColor 或者 backgroundImage 选项为每一个表单设置背景色或者背景图片。如果你同时设置背景色和背景图片, 那么背景图片将会优先显示。
var spread = GC.Spread.Sheets.findControl(document.getElementById('ss')); // set the worksheet's backcolor spread.options.backColor = 'red'; // and set the surrounding area spread.options.grayAreaBackColor = 'gray';
或者，您可以使用workbook的** backgroundImage **选项为工作表设置背景图像。请注意，设置背景图像会覆盖所有设置的背景颜色，因此必须将其删除才能使背景颜色生效。
var spread = GC.Spread.Sheets.findControl(document.getElementById('ss')); // Set a background image for the sheets spread.options.backgroundImage = 'images/backImage.png';
SpreadJS 提供控制图片布局方式的能力, 你可以设置 backgroundImageLayout 选项来完成此目标。图片布局包含以下几种类型:
- stretch: 改变图像尺寸使其充满整个区域,无视实际的长宽比。
- center: 图片将显示在区域的正中央。
- zoom: 改变图像的尺寸使其适合控件尺寸,图片实际的长宽比不变。
- none: 在显示区域中使用图像实际的尺寸显示该图像,没有任何尺寸变化。
spread.options.backgroundImageLayout = GC.Spread.Sheets.ImageLayout.stretch; //spread.options.backgroundImageLayout = GC.Spread.Sheets.ImageLayout.center; //spread.options.backgroundImageLayout = GC.Spread.Sheets.ImageLayout.zoom; //spread.options.backgroundImageLayout = GC.Spread.Sheets.ImageLayout.none;
你也可以设置 grayAreaBackColor 选项来设置表单灰色区域的背景色。
spread.options.grayAreaBackColor = 'gray';
app.js:
window.onload = function() {var spread = new GC.Spread.Sheets.Workbook(_getElementById('ss'), { sheetCount: 1 });initSpread(spread);};function initSpread(spread) {var spreadNS = GC.Spread.Sheets;var sheet = spread.getSheet(0);var pictureUrl = '';spread.suspendPaint();sheet.setRowCount(15);sheet.setColumnCount(20);spread.options.backColor = 'white';spread.options.grayAreaBackColor = 'gray';spread.options.backgroundImageLayout = spreadNS.ImageLayout.stretch;spread.options.backgroundImage = '$DEMOROOT$/spread/source/images/backImage.png';spread.resumePaint();_getElementById('layout').addEventListener('change',function() {var layout = parseInt(document.getElementById('layout').value);spread.options.backgroundImageLayout = layout;});_getElementById('setGrayAreaBackColor').addEventListener('click', function() {var color = document.getElementById('grayAreaBackColor').value;spread.options.grayAreaBackColor = color;});_getElementById('setSpreadBackColor').addEventListener('click', function() {var color = document.getElementById('spreadBackColor').value;spread.options.backColor = color;});_getElementById('file_input').addEventListener('change', function() { var file = this.files[0];if (!/image/w+/.test(file.type)) {alert('The file muse be image!');return false;}var reader = new FileReader();reader.readAsDataURL(file);reader.onload = function(e) {pictureUrl = this.result;};});_getElementById('setSpreadBackgroundImage').addEventListener('click', function() {spread.options.backgroundImage = pictureUrl;});_getElementById('delSpreadBackgroundImage').addEventListener('click', function() {spread.options.backgroundImage = '';});}function _getElementById(id){ return document.getElementById(id);}
index.html:
<!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/spread-sheets/styles/gc.spread.sheets.excel2013white.css"> <script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity/spread-sheets/dist/gc.spread.sheets.all.min.js" type="text/javascript"></script> <script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity/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"> <div class="option-row"> <label >Enter a color name to set the color of the workbook gray area.</label> </div> <div class="option-row"> <input type="text" id="grayAreaBackColor"/> <input type="button" id="setGrayAreaBackColor" value="Set Gray Area BackColor"/> </div> <div class="option-row"> <label >Enter a color name to set the workbook background color.</label> <label class="note">Note: remove background image at the bottom to see this change.</label> </div> <div class="option-row"> <input type="text" id="spreadBackColor"/> <input type="button" id="setSpreadBackColor" value="Set Workbook BackColor"/> </div> <div class="option-row"> <label >Image:</label> <input type="file" name="image" id="file_input" /> </div> <div class="option-row"> <label >Workbook Background Image Layout:</label> <select id="layout" > <option value="0" selected="selected">Stretch</option> <option value="1">Center</option> <option value="2">Zoom</option> <option value="3">None</option> </select> </div> <div class="option-row"> <input type="button" id="setSpreadBackgroundImage" value="Set" class="narrow-button" /> <input type="button" id="delSpreadBackgroundImage" value="Del Background Image" /> </div> </div> </div></body></html>
style.css:
input[type="button"] { width: 180px;}input[type="text"] { padding: 4px; margin-top: 4px; width: 100%; box-sizing: border-box;}label { display: inline-block; margin-bottom: 6px;}.note{ margin-top: 0px;}.colorLabel { background-color: lavender;}.wide-label { width: 260px;}input.narrow-button, .narrow-label { width: 74px;}.sample-tutorial { position: relative; height: 100%; overflow: hidden;}.sample-spreadsheets { width: calc(100% - 300px); height: 100%; overflow: hidden; float: left;}.options-container { float: right; width: 300px; padding: 12px; height: 100%; box-sizing: border-box; background: #fbfbfb; overflow: auto;}.option-row:nth-child(1){ padding-bottom: 0px;}.option-row:nth-child(2){ margin-top: 0px; padding-top: 0px;}.option-row:nth-child(3){ padding-bottom: 0px;}.option-row:nth-child(4){ margin-top: 0px; padding-top: 0px;}.option-row { font-size: 14px; padding: 5px; margin-top: 10px;}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;}
本文转载自：葡萄城
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