我在我的项目中安装了interact.js angular2,但我不知道如何使用文档中描述的方法.
我的导入如下
import * as _ from 'interact';
Angular2中是否有可能提供全面服务interact.js？如何创建拖放支持？
DT https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/interact.js
解决方法
我使用
Renderer2来选择你想要玩的元素,你也可以按原样传递类名,其余的用法与其他的typescript类非常相似.让我们说第一个interactjs的例子,把这个html块放到你的组件模板中
<div id="drag-1" class="draggable">
<p> You can drag one element </p>
</div>
<div id="drag-2" class="draggable">
<p> with each pointer </p>
</div>
在你的组件内部
import { Component,OnInit,Renderer2 } from '@angular/core';
import * as interact from 'interactjs';
@Component({
selector: 'app-playground',templateUrl: './playground.component.html',styleUrls: ['./playground.component.css']
})
export class PlaygroundComponent implements OnInit {
constructor(private renderer2: Renderer2) { }
ngOnInit() {
const draggableEl = this.renderer2.selectRootElement('.draggable');
// target elements with the "draggable" class
interact(draggableEl)
.draggable({
// enable inertial throwing
inertia: true,// keep the element within the area of it's parent
restrict: {
restriction: 'parent',endOnly: true,elementRect: { top: 0,left: 0,bottom: 1,right: 1 }
},// enable autoScroll
autoScroll: true,// call this function on every dragmove event
onmove: this.dragMoveListener,// call this function on every dragend event
onend: function (event) {
const textEl = event.target.querySelector('p');
textEl && (textEl.textContent =
'moved a distance of '
+ (Math.sqrt(Math.pow(event.pageX - event.x0,2) +
Math.pow(event.pageY - event.y0,2) | 0))
.toFixed(2) + 'px');
}
});
}
private dragMoveListener(event) {
const target = event.target,// keep the dragged position in the data-x/data-y attributes
x = (parseFloat(target.getAttribute('data-x')) || 0) + event.dx,y = (parseFloat(target.getAttribute('data-y')) || 0) + event.dy;
// translate the element
target.style.webkitTransform =
target.style.transform =
'translate(' + x + 'px,' + y + 'px)';
// update the posiion attributes
target.setAttribute('data-x',x);
target.setAttribute('data-y',y);
}
}
我认为我们不需要任何其他服务层来使用它！
