How to flip background image using CSS?

问题:

How to flip any background image using CSS? Is it possible?

currenty I'm using this arrow image in a background-image of li in css

On :visited I need to flip this arrow horizontally. I can do this to make another image of arrow BUT I'm just curious to know is it possible to flip the image in CSS for :visited

回答1:

You can flip it horizontally with CSS...

a:visited {
    -moz-transform: scaleX(-1);
    -o-transform: scaleX(-1);
    -webkit-transform: scaleX(-1);
    transform: scaleX(-1);
    filter: FlipH;
    -ms-filter: "FlipH";
}

jsFiddle.

If you want to flip vertically instead...

a:visited {
    -moz-transform: scaleY(-1);
    -o-transform: scaleY(-1);
    -webkit-transform: scaleY(-1);
    transform: scaleY(-1);
    filter: FlipV;
    -ms-filter: "FlipV";
}

Source.

回答2:

I found I way to flip only the background not whole element after seeing a clue to flip in Alex's answer. Thanks alex for your answer

HTML

<div class="prev"><a href="">Previous</a></div>
<div class="next"><a href="">Next</a></div>

CSS

   .next a, .prev a {width:200px;background:#fff}
    .next {float:left}
    .prev {float:right}
    .prev a:before,
    .next a:before {
        content:"";
        width:16px;
        height:16px;
        margin:0 5px 0 0;
        background:url(http://i.stack.imgur.com/ah0iN.png) no-repeat 0 0; display:inline-block
    }


    .next a:before {
        margin:0 0 0 5px;
        transform:scaleX(-1);

    }

See example here http://jsfiddle.net/qngrf/807/

回答3:

According to w3schools: http://www.w3schools.com/cssref/css3_pr_transform.asp

The transform property is supported in Internet Explorer 10, Firefox, and Opera. Internet Explorer 9 supports an alternative, the -ms-transform property (2D transforms only). Safari and Chrome support an alternative, the -webkit-transform property (3D and 2D transforms). Opera supports 2D transforms only.

This is a 2D transform, so it should work, with the vendor prefixes, on Chrome, Firefox, Opera, Safari, and IE9+.

Other answers used :before to stop it from flipping the inner content. I used this on my footer (to vertically-mirror the image from my header):

HTML:

<footer>
<p><a href="page">Footer Link</a></p>
<p>&copy; 2014 Company</p>
</footer>

CSS:

footer {
background:url(/img/headerbg.png) repeat-x 0 0;

/* flip background vertically */
-webkit-transform:scaleY(-1);
-moz-transform:scaleY(-1);
-ms-transform:scaleY(-1);
-o-transform:scaleY(-1);
transform:scaleY(-1);
}

/* undo the vertical flip for all child elements */
footer * {
-webkit-transform:scaleY(-1);
-moz-transform:scaleY(-1);
-ms-transform:scaleY(-1);
-o-transform:scaleY(-1);
transform:scaleY(-1);
}

So you end up flipping the element and then re-flipping all its children. Works with nested elements, too.

回答4:

For what it's worth, for Gecko-based browsers you can't condition this thing off of :visited due to the resulting privacy leaks. See http://hacks.mozilla.org/2010/03/privacy-related-changes-coming-to-css-vistited/

回答5:

You can flip both vertical and horizontal at the same time

    -moz-transform: scaleX(-1) scaleY(-1);
    -o-transform: scaleX(-1) scaleY(-1);
    -webkit-transform: scaleX(-1) scaleY(-1);
    transform: scaleX(-1) scaleY(-1);

And with the transition property you can get a cool flip

    -webkit-transition: transform .4s ease-out 0ms;
    -moz-transition: transform .4s ease-out 0ms;
    -o-transition: transform .4s ease-out 0ms;
    transition: transform .4s ease-out 0ms;
    transition-property: transform;
    transition-duration: .4s;
    transition-timing-function: ease-out;
    transition-delay: 0ms;

Actually it flips the whole element, not just the background-image

SNIPPET

function flip(){
	var myDiv = document.getElementById('myDiv');
	if (myDiv.className == 'myFlipedDiv'){
		myDiv.className = '';
	}else{
		myDiv.className = 'myFlipedDiv';
	}
}

#myDiv{
  display:inline-block;
  width:200px;
  height:20px;
  padding:90px;
  background-color:red;
  text-align:center;
  -webkit-transition:transform .4s ease-out 0ms;
  -moz-transition:transform .4s ease-out 0ms;
  -o-transition:transform .4s ease-out 0ms;
  transition:transform .4s ease-out 0ms;
  transition-property:transform;
  transition-duration:.4s;
  transition-timing-function:ease-out;
  transition-delay:0ms;
}
.myFlipedDiv{
  -moz-transform:scaleX(-1) scaleY(-1);
  -o-transform:scaleX(-1) scaleY(-1);
  -webkit-transform:scaleX(-1) scaleY(-1);
  transform:scaleX(-1) scaleY(-1);
}

<div id="myDiv">Some content here</div>

<button onclick="flip()">Click to flip</button>