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。
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。
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。
你也可以设置 grayAreaBackColor 选项来设置表单灰色区域的背景色。
import * as React from 'react';
import { createRoot } from 'react-dom/client';
import './styles.css';
import { AppFunc } from './app-func';
import { App } from './app-class';
// 1. Functional Component sample
createRoot(document.getElementById('app')).render(<AppFunc />);
// 2. Class Component sample
createRoot(document.getElementById('app')).render(<App />);
import * as React from 'react';
import { useState } from 'react';
import GC from '@grapecity-software/spread-sheets';
import { SpreadSheets, Worksheet } from '@grapecity-software/spread-sheets-react';
import '@grapecity-software/spread-sheets-resources-zh';
GC.Spread.Common.CultureManager.culture("zh-cn");
import './styles.css';
export function AppFunc() {
const [spread, setSpread] = useState(null);
//const [grayAreaBackColor, setGrayAreaBackColor] = useState(null);
//const [backColor, setBackColor] = useState(null);
const [pictureUrl, setPictureUrl] = useState(null);
const initSpread = (spread) => {
setSpread(spread);
spread.suspendPaint();
let spreadNS = GC.Spread.Sheets;
let sheet = spread.getSheet(0);
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();
}
const changeGrayAreaBackColor = (e) => {
let selectElement = e.target;
spread.options.grayAreaBackColor = selectElement.options[selectElement.selectedIndex].value;
}
const changeSpreadBackColor = (e) => {
let selectElement = e.target;
spread.options.backColor = selectElement.options[selectElement.selectedIndex].value;
}
const selectImage = (e) => {
if (typeof e.target.files[0] !== 'object') {
return;
}
let file = e.target.files[0];
if (!/image\/\w+/.test(file.type)) {
alert('The file must be an image!');
return false;
}
let reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = function (e) {
setPictureUrl(this.result);
};
}
const changeLayout = (e) => {
let layout = parseInt(e.target.value);
spread.options.backgroundImageLayout = layout;
}
const setSpreadBackgroundImage = (e) => {
spread.options.backgroundImage = pictureUrl;
}
const deleteSpreadBackgroundImage = (e) => {
spread.options.backgroundImage = '';
}
return <div class="sample-tutorial">
<div class="sample-spreadsheets">
<SpreadSheets workbookInitialized={spread => initSpread(spread)}>
<Worksheet>
</Worksheet>
</SpreadSheets>
</div>
<div className="options-container">
<div className="option-row">
<label>设置背景图片:</label>
<input type="file" name="image" id="file_input" onChange={e => selectImage(e)} />
</div>
<br />
<div className="option-row">
<label>工作簿背景图片布局:</label>
<select id="layout" onChange={e => changeLayout(e)}>
<option value={0} selected="selected">拉伸</option>
<option value={1}>居中</option>
<option value={2}>缩放</option>
<option value={3}>无</option>
</select>
</div>
<div className="option-row">
<input type="button" id="setSpreadBackgroundImage" defaultValue="设置" className="narrow-button" onClick={e => setSpreadBackgroundImage(e)} />
<input type="button" id="delSpreadBackgroundImage" defaultValue="删除背景图片" onClick={e => deleteSpreadBackgroundImage(e)} />
</div>
<hr />
<div class="option-row">
<label>选择一种颜色作为工作簿灰色区域的颜色。</label>
<select id="grayAreaBackColor" onChange={e => changeGrayAreaBackColor(e)}>
<option value={"gray"}>灰色</option>
<option value={"rgb(220, 236, 244)"}>浅蓝色</option>
<option value={"#F4F8EB"}>浅绿色</option>
<option value={"white"}>白色</option>
</select>
</div>
<div class="option-row">
<label>选择一种颜色作为工作簿背景颜色。</label>
<select id="spreadBackColor" onChange={e => changeSpreadBackColor(e)}>
<option value={"white"}>白色</option>
<option value={"#F4F8EB"}>浅绿色</option>
<option value={"rgb(220, 236, 244)"}>浅蓝色</option>
<option value={"gray"}>灰色</option>
</select>
</div>
<label class="note"><u>注意</u>: 移除背景图片以查看此更改。</label>
</div>
</div>;
}
import * as React from 'react';
import GC from '@grapecity-software/spread-sheets';
import { SpreadSheets, Worksheet } from '@grapecity-software/spread-sheets-react';
import '@grapecity-software/spread-sheets-resources-zh';
GC.Spread.Common.CultureManager.culture("zh-cn");
import './styles.css';
const Component = React.Component;
export class App extends Component {
constructor(props) {
super(props);
this.spread = null;
this.grayAreaBackColor = null;
this.backColor = null;
this.pictureUrl = null;
}
render() {
return <div class="sample-tutorial">
<div class="sample-spreadsheets">
<SpreadSheets workbookInitialized={spread => this.initSpread(spread)}>
<Worksheet>
</Worksheet>
</SpreadSheets>
</div>
<div className="options-container">
<div className="option-row">
<label>设置背景图片:</label>
<input type="file" name="image" id="file_input" onChange={e => this.selectImage(e)} />
</div>
<br />
<div className="option-row">
<label>工作簿背景图片布局:</label>
<select id="layout" onChange={e => this.changeLayout(e)}>
<option value={0} selected="selected">拉伸</option>
<option value={1}>居中</option>
<option value={2}>缩放</option>
<option value={3}>无</option>
</select>
</div>
<div className="option-row">
<input type="button" id="setSpreadBackgroundImage" defaultValue="设置" className="narrow-button" onClick={e => this.setSpreadBackgroundImage(e)} />
<input type="button" id="delSpreadBackgroundImage" defaultValue="删除背景图片" onClick={e => this.deleteSpreadBackgroundImage(e)} />
</div>
<hr />
<div class="option-row">
<label>选择一种颜色作为工作簿灰色区域的颜色。</label>
<select id="grayAreaBackColor" onChange={e => this.changeGrayAreaBackColor(e)}>
<option value={"gray"}>灰色</option>
<option value={"rgb(220, 236, 244)"}>浅蓝色</option>
<option value={"#F4F8EB"}>浅绿色</option>
<option value={"white"}>白色</option>
</select>
</div>
<div class="option-row">
<label>选择一种颜色作为工作簿背景颜色。</label>
<select id="spreadBackColor" onChange={e => this.changeSpreadBackColor(e)}>
<option value={"white"}>白色</option>
<option value={"#F4F8EB"}>浅绿色</option>
<option value={"rgb(220, 236, 244)"}>浅蓝色</option>
<option value={"gray"}>灰色</option>
</select>
</div>
<label class="note"><u>注意</u>: 移除背景图片以查看此更改。</label>
</div>
</div>;
}
initSpread(spread) {
this.spread = spread;
spread.suspendPaint();
let spreadNS = GC.Spread.Sheets;
let sheet = spread.getSheet(0);
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();
}
changeGrayAreaBackColor(e) {
let spread = this.spread;
let selectElement = e.target;
spread.options.grayAreaBackColor = selectElement.options[selectElement.selectedIndex].value;
}
changeSpreadBackColor(e) {
let spread = this.spread;
let selectElement = e.target;
spread.options.backColor = selectElement.options[selectElement.selectedIndex].value;
}
selectImage(e) {
if (typeof e.target.files[0] !== 'object') {
return;
}
let file = e.target.files[0];
if (!/image\/\w+/.test(file.type)) {
alert('The file must be an image!');
return false;
}
let self = this;
let reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = function (e) {
self.pictureUrl = this.result;
};
}
changeLayout(e) {
let spread = this.spread;
let layout = parseInt(e.target.value);
spread.options.backgroundImageLayout = layout;
}
setSpreadBackgroundImage(e) {
let spread = this.spread;
spread.options.backgroundImage = this.pictureUrl;
}
deleteSpreadBackgroundImage(e) {
let spread = this.spread;
spread.options.backgroundImage = '';
}
}
<!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="$DEMOROOT$/zh/react/node_modules/@grapecity-software/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<!-- SystemJS -->
<script src="$DEMOROOT$/zh/react/node_modules/systemjs/dist/system.src.js"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('$DEMOROOT$/zh/lib/react/license.js').then(function() {
System.import('./src/app');
});
</script>
</head>
<body>
<div id="app"></div>
</body>
</html>
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: #F4F8EB;
}
.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;
}
#app {
height: 100%;
}
(function(global) {
System.config({
transpiler: 'plugin-babel',
babelOptions: {
es2015: true,
react: true
},
meta: {
'*.css': { loader: 'css' }
},
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
'@grapecity-software/spread-sheets': 'npm:@grapecity-software/spread-sheets/index.js',
'@grapecity-software/spread-sheets-resources-zh': 'npm:@grapecity-software/spread-sheets-resources-zh/index.js',
'@grapecity-software/spread-sheets-react': 'npm:@grapecity-software/spread-sheets-react/index.js',
'@grapecity/jsob-test-dependency-package/react-components': 'npm:@grapecity/jsob-test-dependency-package/react-components/index.js',
'react': 'npm:react/cjs/react.production.js',
'react-dom': 'npm:react-dom/cjs/react-dom.production.js',
'react-dom/client': 'npm:react-dom/cjs/react-dom-client.production.js',
'scheduler': 'npm:scheduler/cjs/scheduler.production.js',
'css': 'npm:systemjs-plugin-css/css.js',
'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel/systemjs-babel-browser.js'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
src: {
defaultExtension: 'jsx'
},
"node_modules": {
defaultExtension: 'js'
},
}
});
})(this);
