Hexo-NexT增加canvas粒子时钟

网上看到一款不错的canvas粒子时钟,下面是在NexT主题增加的步骤。

canvas粒子时钟引入

  1. /themes/next/layout/_custom/目录下,新建clock.swig文件,内容如下:
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<div style="">
<canvas id="canvas" style="width:60%;">当前浏览器不支持canvas,请更换浏览器后再试</canvas>
</div>
<script>
(function(){

var digit=
[
[
[0,0,1,1,1,0,0],
[0,1,1,0,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,0,1,1,0],
[0,0,1,1,1,0,0]
],//0
[
[0,0,0,1,1,0,0],
[0,1,1,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[1,1,1,1,1,1,1]
],//1
[
[0,1,1,1,1,1,0],
[1,1,0,0,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,1,1,0],
[0,0,0,1,1,0,0],
[0,0,1,1,0,0,0],
[0,1,1,0,0,0,0],
[1,1,0,0,0,0,0],
[1,1,0,0,0,1,1],
[1,1,1,1,1,1,1]
],//2
[
[1,1,1,1,1,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,1,1,0],
[0,0,0,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,0,0,1,1,0],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0]
],//3
[
[0,0,0,0,1,1,0],
[0,0,0,1,1,1,0],
[0,0,1,1,1,1,0],
[0,1,1,0,1,1,0],
[1,1,0,0,1,1,0],
[1,1,1,1,1,1,1],
[0,0,0,0,1,1,0],
[0,0,0,0,1,1,0],
[0,0,0,0,1,1,0],
[0,0,0,1,1,1,1]
],//4
[
[1,1,1,1,1,1,1],
[1,1,0,0,0,0,0],
[1,1,0,0,0,0,0],
[1,1,1,1,1,1,0],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0]
],//5
[
[0,0,0,0,1,1,0],
[0,0,1,1,0,0,0],
[0,1,1,0,0,0,0],
[1,1,0,0,0,0,0],
[1,1,0,1,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0]
],//6
[
[1,1,1,1,1,1,1],
[1,1,0,0,0,1,1],
[0,0,0,0,1,1,0],
[0,0,0,0,1,1,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,1,1,0,0,0],
[0,0,1,1,0,0,0],
[0,0,1,1,0,0,0],
[0,0,1,1,0,0,0]
],//7
[
[0,1,1,1,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0]
],//8
[
[0,1,1,1,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,1,1,0],
[0,0,0,1,1,0,0],
[0,1,1,0,0,0,0]
],//9
[
[0,0,0,0,0,0,0],
[0,0,1,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,0,0,0,0,0],
[0,0,0,0,0,0,0],
[0,0,1,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,0,0,0,0,0]
]//:
];

var canvas = document.getElementById('canvas');

if(canvas.getContext){
var cxt = canvas.getContext('2d');
//声明canvas的宽高
var H = 100,W = 700;
canvas.height = H;
canvas.width = W;
cxt.fillStyle = '#f00';
cxt.fillRect(10,10,50,50);

//存储时间数据
var data = [];
//存储运动的小球
var balls = [];
//设置粒子半径
var R = canvas.height/20-1;
(function(){
var temp = /(\d)(\d):(\d)(\d):(\d)(\d)/.exec(new Date());
//存储时间数字,由十位小时、个位小时、冒号、十位分钟、个位分钟、冒号、十位秒钟、个位秒钟这7个数字组成
data.push(temp[1],temp[2],10,temp[3],temp[4],10,temp[5],temp[6]);
})();

/*生成点阵数字*/
function renderDigit(index,num){
for(var i = 0; i < digit[num].length; i++){
for(var j = 0; j < digit[num][i].length; j++){
if(digit[num][i][j] == 1){
cxt.beginPath();
cxt.arc(14*(R+2)*index + j*2*(R+1)+(R+1),i*2*(R+1)+(R+1),R,0,2*Math.PI);
cxt.closePath();
cxt.fill();
}
}
}
}

/*更新时钟*/
function updateDigitTime(){
var changeNumArray = [];
var temp = /(\d)(\d):(\d)(\d):(\d)(\d)/.exec(new Date());
var NewData = [];
NewData.push(temp[1],temp[2],10,temp[3],temp[4],10,temp[5],temp[6]);
for(var i = data.length-1; i >=0 ; i--){
//时间发生变化
if(NewData[i] !== data[i]){
//将变化的数字值和在data数组中的索引存储在changeNumArray数组中
changeNumArray.push(i+'_'+(Number(data[i])+1)%10);
}
}
//增加小球
for(var i = 0; i< changeNumArray.length; i++){
addBalls.apply(this,changeNumArray[i].split('_'));
}
data = NewData.concat();
}

/*更新小球状态*/
function updateBalls(){
for(var i = 0; i < balls.length; i++){
balls[i].stepY += balls[i].disY;
balls[i].x += balls[i].stepX;
balls[i].y += balls[i].stepY;
if(balls[i].x > W + R || balls[i].y > H + R){
balls.splice(i,1);
i--;
}
}
}

/*增加要运动的小球*/
function addBalls(index,num){
var numArray = [1,2,3];
var colorArray = ["#3BE","#09C","#A6C","#93C","#9C0","#690","#FB3","#F80","#F44","#C00"];
for(var i = 0; i < digit[num].length; i++){
for(var j = 0; j < digit[num][i].length; j++){
if(digit[num][i][j] == 1){
var ball = {
x:14*(R+2)*index + j*2*(R+1)+(R+1),
y:i*2*(R+1)+(R+1),
stepX:Math.floor(Math.random() * 4 -2),
stepY:-2*numArray[Math.floor(Math.random()*numArray.length)],
color:colorArray[Math.floor(Math.random()*colorArray.length)],
disY:1
};
balls.push(ball);
}
}
}
}

/*渲染*/
function render(){
//重置画布宽度,达到清空画布的效果
canvas.height = 100;
//渲染时钟
for(var i = 0; i < data.length; i++){
renderDigit(i,data[i]);
}
//渲染小球
for(var i = 0; i < balls.length; i++){
cxt.beginPath();
cxt.arc(balls[i].x,balls[i].y,R,0,2*Math.PI);
cxt.fillStyle = balls[i].color;
cxt.closePath();
cxt.fill();
}
}

clearInterval(oTimer);
var oTimer = setInterval(function(){
//更新时钟
updateDigitTime();
//更新小球状态
updateBalls();
//渲染
render();
},50);
}

})();
</script>
  1. /themes/next/layout/_custom/sidebar.swig中引入:
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{% include './clock.swig' %}
  1. /themes/next/layout/_macro/sidebar.swig中引入:
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      <div class="site-overview-wrap sidebar-panel{% if not display_toc or toc(page.content).length <= 1 %} sidebar-panel-active{% endif %}">
<div class="site-overview">

...

{% if theme.recent_posts %}
<div class="links-of-blogroll motion-element {{ "links-of-blogroll-" + theme.recent_posts_layout }}">
<div class="links-of-blogroll-title">
<!-- modify icon to fire by szw -->
<i class="fa fa-history fa-{{ theme.recent_posts_icon | lower }}" aria-hidden="true"></i>
{{ theme.recent_posts_title }}
</div>
<ul class="links-of-blogroll-list">
{% set posts = site.posts.sort('-date') %}
{% for post in posts.slice('0', '5') %}
<li>
<a href="{{ url_for(post.path) }}" title="{{ post.title }}" target="_blank">{{ post.title }}</a>
</li>
{% endfor %}
</ul>
</div>
{% endif %}

+ {% if theme.custom_file_path.sidebar %}
+ {% set custom_sidebar = '../../../../' + theme.custom_file_path.sidebar %}
+ {% else %}
+ {% set custom_sidebar = '../_custom/sidebar.swig' %}
+ {% endif %}
+ {% include custom_sidebar %}
</div>
</div>

这里我放在侧栏的末尾。

canvas粒子时钟样式

/themes/next/source/css/_custom/custom.styl添加:

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// 粒子时钟样式
.site-overview {
text-align: center;
}

canvas#canvas {
margin-top: 20px;
}

参考

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