transition | 易学教程

聊一聊css动画

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何为动画我们眼前所看到图像正在以每秒60次的频率刷新，由于刷新频率很高，因此你感觉不到它在刷新。而动画本质就是要让人眼看到图像被刷新而引起变化的视觉效果，这个变化要以连贯的、平滑的方式进行过渡。 CSS Transitions transition: property duration timing-function delay Transitions 四个属性 transition-property：规定设置过渡效果的 CSS 属性的名称 transition-duration：规定完成过渡效果需要多少秒或毫秒 transition-delay：定义过渡效果何时开始 transition-timing-function：规定速度效果的速度曲线，有以下参数： ease:ease函数等同于贝塞尔曲线(0.25, 0.1, 0.25, 1.0). linear:linear 函数等同于贝塞尔曲线(0.0, 0.0, 1.0, 1.0). ease-in:ease-in 函数等同于贝塞尔曲线(0.42, 0, 1.0, 1.0). ease-out:ease-out 函数等同于贝塞尔曲线(0, 0, 0.58, 1.0). ease-in-out:ease-in-out 函数等同于贝塞尔曲线(0.42, 0, 0.58, 1.0) cubic-bezier:特定的cubic

d3.js transition end event

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问题 I am applying a transition to a group of nodes returned by selectAll() . I thought the end event would fire after all transitions finished, but each("end",function) gets called at the end of each transition. So is there any way to set a callback that will be called after transitions on all selected node finishes ? Should I use call for this? but I don't see it used as end callback anywhere in documentation. also I can run a counter inside each callback. but is there any way to know how many

过渡模式

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<!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <script src="vue.js"></script> </head> <body> <div> <h1>--过渡模式(进入和离开同时发生)--</h1> <div id="example1"> <transition name="no-mode-fade">  <button v-if="on" key="on" @click="on = false"> on </button> <button v-else="" key="off" @click="on = true"> off </button> </transition> </div> <script> var example1 = new Vue({ el: '#example1', data: { on: false }, }) </script> <style> .no-mode-fade-enter-active, .no-mode-fade-leave-active { transition: opacity .5s } .no-mode

Unbalanced calls to begin/end appearance transitions for <FirstViewController: 0x2a2c00>

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问题 I have this problem when I simulate my app, its not an error or a warning but it appears in my console, has anyone ever experienced this before? 回答1: In my case, this error occurs when you click two tabs in a tableview very fast. The result causes wrong titlename, back button disappear. Someone mentioned that when you push a view, set animated:NO . The error will disappear but still causes some strange behavior. It pushes two views, then you need to back twice to get back the tableview screen

利用css3实现照片列表展开小demo

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　　效果如下: 其实实现起来很简单，就是控制宽高的变化，然后给他加上transition 过度而已。觉得代码没什么难的地方，就不打注释了，如果哪里有不懂的话，可以直接评论呢。直接上源码 html代码： <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <link rel="stylesheet" href="./css/index.css"> </head> <body> <div class="wra"> <ul class="content"> <li class="items"> <div class="inner"> <h2>bird</h2> <div class="bg"> <div class="close"></div> </div> </div> </li> <li class="items"> <div class="inner"> <h2>bird</h2> <div class=

Invoke a callback at the end of a transition

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I need to make a FadeOut method (similar to jQuery) using D3.js . What I need to do is to set the opacity to 0 using transition() . d3.select("#myid").transition().style("opacity", "0"); The problem is that I need a callback to realize when the transition has finished. How can I implement a callback? Phrogz You want to listen for the "end" event of the transition. // d3 v5 d3.select("#myid").transition().style("opacity","0").on("end", myCallback); // old way d3.select("#myid").transition().style("opacity","0").each("end", myCallback); This demo uses the "end" event to chain many transitions in

Implement page curl on android?

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I was surfing the net looking for a nice effect for turning pages on Android and there just doesn't seem to be one. Since I'm learning the platform it seemed like a nice thing to be able to do is this. I managed to find a page here: http://wdnuon.blogspot.com/2010/05/implementing-ibooks-page-curling-using.html - (void)deform { Vertex2f vi; // Current input vertex Vertex3f v1; // First stage of the deformation Vertex3f *vo; // Pointer to the finished vertex CGFloat R, r, beta; for (ushort ii = 0; ii < numVertices_; ii++) { // Get the current input vertex. vi = inputMesh_[ii]; // Radius of the

overridePendingTransition does not work when FLAG_ACTIVITY_REORDER_TO_FRONT is used

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问题 I have two activities in the stack, in order to show them I use FLAG_ACTIVITY_REORDER_TO_FRONT. So far so good, the problem comes when I want to bring the activity with an animation using overridePendingTransition. Intent i = new Intent(ActivityA.this, ActivityB.class); i.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); ActivityA.this.startActivity(i); overridePendingTransition(R.anim.transition_to_right, R.anim.transition_to_left); The transition is not shown, however, if the flag is not

CSS Auto hide elements after 5 seconds

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问题 Is it possible to hide element 5 seconds after the page load? I know there is a jQuery solution. I want to do exactly same thing, but hoping to get the same result with CSS transition. Any innovative idea? Or am I asking beyond the limit of css transition/animation? 回答1: YES! But you can't do it in the way you may immediately think, because you cant animate or create a transition around the properties you'd otherwise rely on (e.g. display , or changing dimensions and setting to overflow

Can I change the Android startActivity() transition animation?

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问题 I am starting an activity and would rather have a alpha fade-in for startActivity() , and a fade-out for the finish() . How can I go about this in the Android SDK? 回答1: In the same statement in which you execute finish(), execute your animation there too. Then, in the new activity, run another animation. See this code: fadein.xml <set xmlns:android="http://schemas.android.com/apk/res/android" android:fillAfter="true"> <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="500"