我试图以给定的x,y坐标以编程方式触发涟漪动画,但似乎无法正确执行。
我发现了一些有用的答案,例如:
paper-ripple mouseDown event handler downAction Override
Polymer paper ripple
How to trigger Polymer paper ripple animation by API code?
我没有找到应用前两个方法的方法,因为在此阶段,我只是使用纸纹元素而不创建自定义元素。第一个答案有些帮助,但我想控制波纹的x,y坐标。
这是我尝试使用第3个答案的Jacek代码段进行操作的方法:
<!DOCTYPE html>
<html>
<head>
<base href="https://polygit.org">
<script src="/components/webcomponentsjs/webcomponents-lite.min.js"></script>
<link rel="import" href="/components/polymer/polymer.html">
<link rel="import" href="/components/paper-ripple/paper-ripple.html">
<style>
.card {
position: relative;
display: inline-block;
width: 300px;
height: 240px;
vertical-align: top;
background-color: #fff;
box-shadow: 0 12px 15px 0 rgba(0, 0, 0, 0.24);
}
</style>
</head>
<body>
<template id="demo" is="dom-bind">
<div class="card">
<paper-ripple recenters></paper-ripple>
</div>
</template>
</body>
<script>
var demo = document.querySelector('#demo');
var mouseDown = new MouseEvent("mouseDown",{"clientX":30,"clientY":30,"screenX":30,"screenY":30});
var mouseUp = new MouseEvent("mouseUp",{"clientX":30,"clientY":30,"screenX":30,"screenY":30});
demo.addEventListener('dom-change', function() {
setInterval(triggerRippleDown, 1000);
setInterval(triggerRippleUp, 1200);
});
var triggerRippleDown = function() {
var paperRipple = document.querySelector('paper-ripple');
paperRipple.downAction(mouseDown);
}
var triggerRippleUp = function() {
var paperRipple = document.querySelector('paper-ripple');
paperRipple.upAction(mouseUp);
}
</script>
</html>
通过鼠标事件传递x,y属性似乎不起作用,尽管文档的这一部分建议这样做:
downAction: function(e) {
this.$.ripple.downAction({x: e.x, y: e.y});
}
关于在自定义组件之外以编程方式触发纹波的推荐方法有何暗示?
最佳答案
我不知道推荐的方法,但是我有简单的解决方案。
我的解决方案不是传递鼠标事件,而是传递带有x,y的对象。看这个例子:
<!DOCTYPE html>
<html>
<head>
<base href="https://polygit.org">
<script src="/components/webcomponentsjs/webcomponents-lite.min.js"></script>
<link rel="import" href="/components/polymer/polymer.html">
<link rel="import" href="/components/paper-ripple/paper-ripple.html">
<style>
.card {
position: relative;
display: inline-block;
width: 300px;
height: 240px;
vertical-align: top;
background-color: #fff;
box-shadow: 0 12px 15px 0 rgba(0, 0, 0, 0.24);
}
</style>
</head>
<body>
<template id="demo" is="dom-bind">
<div class="card">
<paper-ripple recenters></paper-ripple>
</div>
</template>
</body>
<script>
var demo = document.querySelector('#demo');
demo.addEventListener('dom-change', function() {
setInterval(triggerRippleDown, 1000);
setInterval(triggerRippleUp, 1200);
});
var triggerRippleDown = function() {
var paperRipple = document.querySelector('paper-ripple');
paperRipple.downAction({detail:{x:30,y:120}});
console.log(paperRipple.xStart);
}
var triggerRippleUp = function() {
var paperRipple = document.querySelector('paper-ripple');
paperRipple.upAction();
}
</script>
</html>
我用这个,不要mouseEvent
paperRipple.downAction({detail:{x:30,y:120}});
paperRipple.upAction();