创建伪按钮的渐变问题

时间:2018-09-17 19:41:05

标签: html css button gradient

我需要制作一个在任何现代浏览器和任何操作系统上都相同的按钮(appearance: button-这对我来说不是解决方案!)。 These are the 4 stages (without disabled stage) of the button I want to recreate.

我做了一个包装纸,但是有一个problem with the gradient。这可以通过复制原始按钮的图像并将其作为背景插入来解决,但是我认为这是一个错误的决定。我的观点是,与使用background-image: url('https://i.imgur.com/lmEjKKe.png')的临时版本相比,渐变是一种更好的缩放解决方案。

//
function setBtnHover(element, value) {
 //
 element.dataset.hover = value;
}

//
var lastBtnMouseDown = null;

//
function setBtnMouseDown(element, value, e) {
 //
 if (element !== null) {
  //
  element.dataset.mouseDown = value;
  //
  if (value) {
   //
   if (lastBtnMouseDown !== null)
    //
    lastBtnMouseDown.dataset.click = false;

   //
   element.dataset.click = true;
   //
   lastBtnMouseDown = element;
  }

  //
  e.stopPropagation();
 //
 } else if (!value) {
  //
  if (lastBtnMouseDown !== null) {
   //
   lastBtnMouseDown.dataset.mouseDown = value;
  }
 } else {
  //
  lastBtnMouseDown.dataset.click = false;
  //
  lastBtnMouseDown = null;
 }
}
.button {
  box-shadow: -1px -1px 0 0 rgba(0,0,0,0.05);
  padding-left: 10px;
  padding-right: 10px;
  height: 22px;
  box-sizing: border-box;
  border: 1px solid #003c74;
  display: inline-block;
  color: #000000;
  cursor: default;
  text-align: center;
  font: 13.3333px MS Shell Dlg \32;
  padding-top: 2px;
  border-radius: 3px;
  background-image: url('https://i.imgur.com/3Jwqiw1.png');
  -moz-user-select: none;
  user-select: none;
}

.button[data-hover=false][data-click=true] {
 background: radial-gradient(white 60%, blue 100%);
}

.button[data-hover=true][data-mouse-down=true] {
 padding-left: 1px;
 background-image: url('https://i.imgur.com/lmEjKKe.png');
}

.button[data-hover=true][data-mouse-down=false] {
 background: radial-gradient(white 60%, orange 100%);
}
<body onmousedown="setBtnMouseDown(null, true)" onmouseup="setBtnMouseDown(null, false)">

<p style="padding-left: 1px;"><span class="button" data-hover="false" data-mouse-down="false" data-click="false" onmouseover="setBtnHover(this, true)" onmouseout="setBtnHover(this, false)" onmousedown="setBtnMouseDown(this, true, event)" onmouseup="setBtnMouseDown(this, false, event)">BUTTON</span></p>

<p><button>BUTTON</button></p>

</body>

JSFiddle:https://jsfiddle.net/0wd4m6qg/5/

2 个答案:

答案 0 :(得分:0)

关闭屏幕截图,我想这就是您想要的效果。我正在堆叠伪元素以创建所需的效果。

//
function setBtnHover(element, value) {
  //
  element.dataset.hover = value;
}

//
var lastBtnMouseDown = null;

//
function setBtnMouseDown(element, value, e) {
  //
  if (element !== null) {
    //
    element.dataset.mouseDown = value;
    //
    if (value) {
      //
      if (lastBtnMouseDown !== null)
        //
        lastBtnMouseDown.dataset.click = false;

      //
      element.dataset.click = true;
      //
      lastBtnMouseDown = element;
    }

    //
    e.stopPropagation();
    //
  } else if (!value) {
    //
    if (lastBtnMouseDown !== null) {
      //
      lastBtnMouseDown.dataset.mouseDown = value;
    }
  } else {
    //
    lastBtnMouseDown.dataset.click = false;
    //
    lastBtnMouseDown = null;
  }
}
.button {
  box-shadow: -1px -1px 0 0 rgba(0, 0, 0, 0.05);
  width: 70px;
  height: 23px;
  box-sizing: border-box;
  border: 1px solid #003c74;
  display: inline-block;
  color: #000000;
  cursor: default;
  text-align: center;
  font: 13.3333px MS Shell Dlg \32;
  padding-top: 2px;
  border-radius: 3px;
  -moz-user-select: none;
  user-select: none;
  position: relative;
  z-index: 0;
}

.button::before {
  position: absolute;
  background-image: url('https://i.imgur.com/3Jwqiw1.png');
  content: "";
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: -2;
}

.button::after {
  position: absolute;
  background: #fff;
  content: "";
  left: 2px;
  right: 2px;
  top: 2px;
  bottom: 2px;
  z-index: -1;
}

.button[data-hover=false][data-click=true]::before {
  background: radial-gradient(white 60%, blue 100%);
}

.button[data-hover=true][data-mouse-down=true]::before {
  padding-left: 1px;
  background-image: url('https://i.imgur.com/lmEjKKe.png');
}

.button[data-hover=true][data-mouse-down=false]::before {
  background: radial-gradient(white 60%, orange 100%);
}
<body onmousedown="setBtnMouseDown(null, true)" onmouseup="setBtnMouseDown(null, false)">

  <p style="padding-left: 1px;"><span class="button" data-hover="false" data-mouse-down="false" data-click="false" onmouseover="setBtnHover(this, true)" onmouseout="setBtnHover(this, false)" onmousedown="setBtnMouseDown(this, true, event)" onmouseup="setBtnMouseDown(this, false, event)">BUTTON</span></p>

  <p><button>BUTTON</button></p>

</body>

答案 1 :(得分:0)

您可以使用类来应用CSS来代替伪类或伪元素(我认为这是更简单,更简洁的代码),并且可以使用“插入”中的盒形阴影代替径向渐变背景。模式以创建粗大的内部边框(加上纯色背景色或线性渐变):

.my-button.over {
    /* background: radial-gradient(white 60%, orange 100%); */
    box-shadow: 0 0 0 0.25em orange inset;
}

您还可以通过将事件侦听器添加到要定位的选择器来简化逻辑,如下所示:

var mybutton = document.querySelector('.my-button'); // single element
var buttons = document.querySelectorAll('.my-button'); // many elements

然后创建一些向目标元素添加类或从中删除类的函数:

function overButton() {
    this.classList.add('over')
}

使用正确的事件侦听器将功能附加到元素。 (您还可以添加条件逻辑来检查是否已将类添加到特定按钮。)

mybutton.addEventListener('mouseout', outButton); // single element
// see my JS Bin for attaching to multiple elements.

这是我的JS Bin:

http://jsbin.com/sehucak/edit?html,css,js,console,output