CSS 中应☏用轴向渐变色完成卡券实际效果

2021-01-20 23:25 jianzhan

前几日,朋友收到一个積分商城系统新项目,在其中有一个卡券换取礼物作用。我觉得了一会没有什么好的构思,就忙自身的新项目来到。但想起之后自身将会也会碰到相近的要求,因此礼拜天学习培训梳理了下几类卡券实际效果的完成。

普遍的卡券款式以下:

 

应用伪原素完成(Less 版本号)

ticket.less

.ordinary-mixins-ticket-horizontal(@width,@height,@r,@top, @color) {
  position: relative;
  box-sizing: border-box;
  padding: 0 @r;
  width: @width;
  height: @height;
  background-clip: content-box;
  background-color: @color;

  &::before {
    position: absolute;
    top: 0;
    left: 0;
    content: "";
    display: block;
    width: @r + 1px;
    height: 100%;
    background: radial-gradient(@r circle at left @top, transparent @r, @color @r + 1px);
  }

  &::after {
    position: absolute;
    top: 0;
    right: 0;
    content: "";
    display: block;
    //这儿的 @r + 1px 是以便防止一些百分之百比放缩网页页面时,出現间隙
    width: @r + 1px;
    height: 100%;
    //这儿的 @r + 1px 是以便避免出现锯齿
    background: radial-gradient(@r circle at right @top, transparent @r, @color @r + 1px);
  }
}

.parent {
  .ordinary-mixins-ticket-horizontal(200px, 200px, 10px, 150px, #fc3a28);
}
.child {
  line-height: 200px;
}

App.js

import React from 'react';
import './App.css';
import './ticket.less';

function App() {
    return (
        <div className="App" style={
            {
                display: "flex",
                justifyContent: "center",
                alignItems: "center",
                height: 600
            }
        }>
            <div className={'parent'}>
                <div className="child">666</div>
            </div>
        </div>
    );
}

export default App;

升級版款式一(Less 版本号)

.mixins-ticket-vertical(@width, @height, @r, @left, @l-color, @r-color) {
  width: @width;
  height: @height;
  // @left - 1px 是以便防止一些百分之百比放缩网页页面时,出現间隙
  // @r + 1px 是以便避免出现锯齿
  // 51% 是以便避免出现原素正中间会出现一小段空白页地区的状况
  background: radial-gradient(circle at left top, transparent @r, @l-color  @r + 1px) @left - 1px top ~'/' 100% 51% no-repeat,
  radial-gradient(circle at left bottom, transparent @r, @l-color  @r + 1px) @left - 1px bottom ~'/' 100% 51% no-repeat,
    radial-gradient(circle at  right top, transparent @r, @r-color  @r + 1px ) -(@width - @left) top ~'/' 100% 51% no-repeat,
    radial-gradient(circle at right bottom , transparent @r, @r-color  @r + 1px )  -(@width - @left) bottom ~'/' 100% 51% no-repeat;

  filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, .2));
}

.mixins-ticket-vertical-two(@width, @height, @r, @left, @l-color, @r-color) {
  width: @width;
  height: @height;
  // @left + 1px 是以便防止一些百分之百比放缩网页页面时,出現间隙
  // @r + 1px 是以便避免出现锯齿
  // 51% 是以便避免出现原素正中间会出现一小段空白页地区的状况
  background: radial-gradient(circle at left top, transparent @r, @r-color @r + 1px) right top ~'/' (@width - @left) 51% no-repeat,
  radial-gradient(circle at left bottom, transparent @r, @l-color @r + 1px) right bottom ~'/' (@width - @left)   51% no-repeat,
  radial-gradient(circle at right top, transparent @r, @r-color @r + 1px) left top ~'/' @left + 1px 51% no-repeat,
  radial-gradient(circle at right bottom, transparent @r, @l-color @r + 1px) left bottom ~'/' @left + 1px   51% no-repeat;

  filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, .2));
}

.parent {
  .mixins-ticket-vertical(200px, 200px, 10px, 150px, #fc3a28,#fc3a28);
  //.mixins-ticket-vertical-two(200px, 200px, 10px, 150px, #fc3a28,#fc3a28);
}
.child {
  line-height: 200px;
}

升級版款式一(Scss 版本号)

@mixin mixins-ticket-vertical($width, $height, $r, $left, $l-color, $r-color) {
  width: $width;
  height: $height;
  // $left - 1px 是以便防止一些百分之百比放缩网页页面时,出現间隙
  // $r + 1px 是以便避免出现锯齿
  // 51% 是以便避免出现原素正中间会出现一小段空白页地区的状况
  background: radial-gradient(circle at left top, transparent $r, $l-color  $r + 1px) $left - 1px top / 100% 51% no-repeat,
  radial-gradient(circle at left bottom, transparent $r, $l-color  $r + 1px) $left - 1px bottom / 100% 51% no-repeat,
  radial-gradient(circle at  right top, transparent $r, $r-color  $r + 1px ) -($width - $left) top / 100% 51% no-repeat,
  radial-gradient(circle at right bottom , transparent $r, $r-color  $r + 1px )  -($width - $left) bottom / 100% 51% no-repeat;

  filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, .2));
}

.parent {
  @include mixins-ticket-vertical(200px, 200px, 10px, 150px, #fc3a28, #fc3a28);
}

.child {
  line-height: 200px;
}

升級版款式二(Less 版本号)

.mixins-ticket-horizontal(@width, @height, @r, @top, @l-color, @r-color) {
  width: @width;
  height: @height;
  background: radial-gradient(circle at left top, transparent @r, @l-color @r + 1px) left  @top - 1px ~'/' 51% 100% no-repeat,
  radial-gradient(circle at left bottom, transparent @r, @l-color @r + 1px) left -(@height - @top) ~'/' 51% 100% no-repeat,
  radial-gradient(circle at right top, transparent @r, @r-color @r + 1px) right  @top - 1px ~'/' 51% 100% no-repeat,
  radial-gradient(circle at right bottom, transparent @r, @r-color @r + 1px) right -(@height - @top) ~'/' 51% 100% no-repeat;

  filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, .2));
}

.mixins-ticket-horizontal-two(@width, @height, @r, @top, @l-color, @r-color) {
  width: @width;
  height: @height;
  background: radial-gradient(circle at left top, transparent @r, @r-color @r + 1px) left bottom ~'/' 51%  (@height - @top) no-repeat,
  radial-gradient(circle at left bottom, transparent @r, @l-color @r + 1px) left top ~'/' 51%  @top + 1px  no-repeat,
  radial-gradient(circle at right top, transparent @r, @r-color @r + 1px) right bottom ~'/' 51%  (@height - @top) no-repeat,
  radial-gradient(circle at right bottom, transparent @r, @l-color @r + 1px) right top ~'/' 51% @top + 1px no-repeat;

  filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, .2));
}

.parent {
  .mixins-ticket-horizontal(200px, 200px, 10px, 150px, #fc3a28,#fc3a28);
  //.mixins-ticket-horizontal-two(200px, 200px, 10px, 150px, #fc3a28,#fc3a28);
}
.child {
  line-height: 200px;
}

升級版款式三(Less 版本号)

.mixins-ticket-horizontal-line(@width, @height, @r, @top, @l-color, @r-color,@border-offset,@border-color) {
  width: @width;
  height: @height;
  background: radial-gradient(circle at left top, transparent @r, @l-color @r + 1px) left @top - 1px ~'/' 51% 100% no-repeat,
  radial-gradient(circle at left bottom, transparent @r, @l-color @r + 1px) left -(@height - @top) ~'/' 51% 100% no-repeat,
  radial-gradient(circle at right top, transparent @r, @r-color @r + 1px) right @top - 1px ~'/' 51% 100% no-repeat,
  radial-gradient(circle at right bottom, transparent @r, @r-color @r + 1px) right -(@height - @top) ~'/' 51% 100% no-repeat;
  filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, .2));

  &::after {
    position: absolute;
    left: 0;
    right: 0;
    top: @top;
    margin: auto;
    content: '';
    width: calc(~"100%" - 2*@r - @border-offset);
    border-top: 1px dashed @border-color;
  }
}

.parent {
  .mixins-ticket-horizontal(200px, 200px, 10px, 150px, #fc3a28,#fc3a28);
  //.mixins-ticket-horizontal-two(200px, 200px, 10px, 150px, #fc3a28,#fc3a28);
}
.child {
  line-height: 200px;
}

升級版款式四(Less 版本号)

.mixins-ticket-vertical-three(@width, @height, @r, @left, @l-color, @r-color,@sm-r,@sm-offset,@sm-color) {
  width: @width;
  height: @height;
  // @left - 1px 是以便防止一些百分之百比放缩网页页面时,出現间隙
  // @r + 1px 是以便避免出现锯齿
  // 51% 是以便避免出现原素正中间会出现一小段空白页地区的状况
  background: radial-gradient(circle at left top, transparent @r, @l-color  @r + 1px) @left - 1px top ~'/' 100% 51% no-repeat,
  radial-gradient(circle at left bottom, transparent @r, @l-color  @r + 1px) @left - 1px bottom ~'/' 100% 51% no-repeat,
    radial-gradient(circle at  right top, transparent @r, @r-color  @r + 1px ) -(@width - @left) top ~'/' 100% 51% no-repeat,
    radial-gradient(circle at right bottom , transparent @r, @r-color  @r + 1px )  -(@width - @left) bottom ~'/' 100% 51% no-repeat;

  filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, .2));

  &::after {
    content: '';
    position: absolute;
    top: 0;
    right: -@sm-r;
    width: @sm-r;
    height: 100%;
    background-image: radial-gradient(circle at @sm-r, transparent @sm-r, @r-color @sm-r + 1px);
    //background-size: @sm-r;
    background-size: @sm-r @sm-offset;
  }
}

.parent {
  .mixins-ticket-vertical-three(200px, 200px, 10px, 150px, #fc3a28, #fc3a28,5px,20px,#fc3a28);
}

.child {
  line-height: 200px;
}

留意事宜

// ticket.less

//background: radial-gradient(circle at top right, transparent @r, @lcolor 0) -(@width - @left) top ~'/' 100% 55% no-repeat;
// 将上边的这方面编码拆卸以下:
//background-image: radial-gradient(circle at top right, transparent @r, @lcolor 0);
//background-position:-(@width - @left) top ;
//background-size:100% 55% ;
//background-repeat: no-repeat;

/*留意:这儿起先有 50px 的全透明地区,随后第二个地区设定了 0 ,能够了解为从这儿刚开始再次设定款式区段*/
/*background: radial-gradient(circle at top right, transparent 50px, red 0, #66a8ff 50%);*/

/*在Chrome下,假如2个地区中间色调立即以 0 误差衔接,会出现较为比较严重的锯齿*/
/*background: radial-gradient(10px at left,transparent 50%,#F6327C 50%);*/
/*background: radial-gradient(10px at left,transparent 50%,#F6327C 55%);*/

/*加黑影实际效果*/
/*filter: drop-shadow(2px 2px 2px rgba(0,0,0,.2));*/

/*好几个轴向渐变色累加*/
/*background: 
radial-gradient(50px 100px ellipse, transparent 40px, yellow 41px, red 49px, transparent 50px),
radial-gradient(30px circle, red, red 29px, transparent 30px);*/

小结

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