滚动和可视范围

当用户使用鼠标或键盘选择单元格时,FlexGrid会通过调用 scrollIntoView 方法自动确保它是可见的。

scrollIntoView 方法使网格根据需要滚动,以便请求的单元格在当前 viewRange 内。 网格将滚动显示单元格所需的最小量,因此可能会在视图范围的顶部,中间或底部显示。

如果要在视图范围的顶部显示特定行,则需要稍微不同的方法:获取要显示在顶部的单元格的边界矩形,并使用坐标设置网格的 scrollPosition 属性。

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjGrid from '@grapecity/wijmo.grid'; import * as wjCore from '@grapecity/wijmo'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // create some random data var countries = 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','), data = []; for (var i = 0; i < 200; i++) { data.push({ id: i, country: countries[i % countries.length], active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } // // auto-generated columns var theGrid = new wjGrid.FlexGrid('#theGrid', { itemsSource: data }); // // scroll into view document.getElementById('scrollIntoView').addEventListener('click', function () { theGrid.scrollIntoView(100, -1); }); // // set top cell document.getElementById('scrollToTop').addEventListener('click', function () { if (true) { // // get cell rect, adjust scrollPosition.y to bring it to the top var rc = theGrid.cells.getCellBoundingRect(100, 0, true); theGrid.scrollPosition = new wjCore.Point(theGrid.scrollPosition.x, -rc.top); // } else { // // simpler but less efficient (requires a timeOut) theGrid.scrollIntoView(theGrid.rows.length - 1, -1); setTimeout(function () { theGrid.scrollIntoView(100, -1); }); } }); } <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Scrolling and View Range</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <button id="scrollIntoView" class="btn btn-default"> Scroll Row 100 Into View </button> <button id="scrollToTop" class="btn btn-default"> Set Top Cell to Row 100 </button> <div id="theGrid"> </div> </div> </body> </html> .wj-flexgrid { max-height: 200px; margin: 12px 0; } body { margin-bottom: 20px; } import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import { Component, enableProdMode, NgModule, ViewChild } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import * as wjcCore from '@grapecity/wijmo'; import * as wjcGrid from '@grapecity/wijmo.grid'; import { WjGridModule } from '@grapecity/wijmo.angular2.grid'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data: any[]; constructor() { this.data = this._getData(); } @ViewChild('flex') flex: wjcGrid.FlexGrid; scrollIntoView() { this.flex.scrollIntoView(100, -1); } scrollToTop() { // get cell rect, adjust scrollPosition.y to bring it to the top let rc = this.flex.cells.getCellBoundingRect(100, 0, true); this.flex.scrollPosition = new wjcCore.Point(this.flex.scrollPosition.x, -rc.top); } private _getData() { let countries = 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','), data = []; for (let i = 0; i < 200; i++) { data.push({ id: i, country: countries[i % countries.length], active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } return data; } } // @NgModule({ imports: [WjGridModule, BrowserModule], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } // enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule); <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Scrolling and View Range</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/dist/zone.min.js"></script> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.js"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html> <div class="container-fluid"> <button (click)="scrollIntoView()" class="btn btn-default"> Scroll Row 100 Into View </button> <button (click)="scrollToTop()" class="btn btn-default"> Set Top Cell to Row 100 </button> <wj-flex-grid #flex [(itemsSource)]="data"> </wj-flex-grid> </div> .wj-flexgrid { max-height: 200px; margin: 12px 0; } body { margin-bottom: 20px; } <template> <div class="container-fluid"> <button @click="scrollIntoView" class="btn btn-default"> Scroll Row 100 Into View </button> <button @click="scrollToTop" class="btn btn-default"> Set Top Cell to Row 100 </button> <wj-flex-grid :itemsSource="data" :initialized="initializeGrid"> </wj-flex-grid> </div> </template> <script> import "@grapecity/wijmo.styles/wijmo.css"; import "bootstrap.css"; import Vue from "vue"; import * as wjcCore from '@grapecity/wijmo'; import * as wjcGrid from '@grapecity/wijmo.grid'; import '@grapecity/wijmo.vue2.grid'; new Vue({ el: "#app", data: { data: null }, methods:{ initializeGrid(flex){ this.data = this._getData(); this.flex = flex; }, scrollIntoView() { this.flex.scrollIntoView(100, -1); }, scrollToTop() { // get cell rect, adjust scrollPosition.y to bring it to the top let rc = this.flex.cells.getCellBoundingRect(100, 0, true); this.flex.scrollPosition = new wjcCore.Point(this.flex.scrollPosition.x, -rc.top); }, _getData() { let countries = 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','), data = []; for (let i = 0; i < 200; i++) { data.push({ id: i, country: countries[i % countries.length], active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } return data; } } }); </script> <style> .wj-flexgrid { max-height: 200px; margin: 12px 0; } body { margin-bottom: 20px; } </style> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>AutoComplete</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app.vue'); </script> </head> <body> <div id="app"> </div> </body> </html> import "@grapecity/wijmo.styles/wijmo.css"; import "bootstrap.css"; import "./app.css"; // import * as React from 'react'; import * as ReactDOM from 'react-dom'; // import * as wjcCore from '@grapecity/wijmo'; import * as wjcGrid from "@grapecity/wijmo.react.grid"; class App extends React.Component { constructor(props) { super(props); this.state = { data: this._getData() }; } render() { return <div className="container-fluid"> <button onClick={this.scrollIntoView.bind(this)} className="btn btn-default"> Scroll Row 100 Into View </button> <button onClick={this.scrollToTop.bind(this)} className="btn btn-default"> Set Top Cell to Row 100 </button> <wjcGrid.FlexGrid itemsSource={this.state.data} initialized={this.initializeGrid.bind(this)}> </wjcGrid.FlexGrid> </div>; } initializeGrid(flex) { this.flex = flex; } scrollIntoView() { this.flex.scrollIntoView(100, -1); } scrollToTop() { // get cell rect, adjust scrollPosition.y to bring it to the top let rc = this.flex.cells.getCellBoundingRect(100, 0, true); this.flex.scrollPosition = new wjcCore.Point(this.flex.scrollPosition.x, -rc.top); } _getData() { let countries = 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','), data = []; for (let i = 0; i < 200; i++) { data.push({ id: i, country: countries[i % countries.length], active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } return data; } } ReactDOM.render(<App />, document.getElementById('app')); <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Grapecity Wijmo OLAP Pivot Chart Overview</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app"></div> </body> </html> .wj-flexgrid { max-height: 200px; margin: 12px 0; } body { margin-bottom: 20px; }