I want to show an image from an URL with a certain width and height even if it has a different size ratio. So I want to resize (maintaining the ratio) and then cut the image to the size I want. I can resize with html img property and I can cut with background-image. How can I do both? Example: This image: Has the size 800x600 pixels and I want to show like an image of 200x100 pixels With img I can resize the image 200x150px: <img style="width: 200px; height: 150px;" src="http://i.stack.imgur.com/wPh0S.jpg"> That gives me this: <img style="width: 200px; height: 150px;" src="https://i.stack.imgur.com/wPh0S.jpg"> And with background-image I can cut the image 200x100 pixels. <div style="background-image: url('https://i.stack.imgur.com/wPh0S.jpg'); width:200px; height:100px; background-position:center;"> </div> Gives me: <div style="background-image:url('https://i.stack.imgur.com/wPh0S.jpg'); width:200px; height:100px; background-position:center;"> </div> How can I do both? Resize the image and then cut it the size I want?
当前回答
<p class="crop"><a href="http://templatica.com" title="Css Templates">
<img src="img.jpg" alt="css template" /></a></p>
.crop {
float: left;
margin: .5em 10px .5em 0;
overflow: hidden; /* this is important */
position: relative; /* this is important too */
border: 1px solid #ccc;
width: 150px;
height: 90px;
}
.crop img {
position: absolute;
top: -20px;
left: -55px;
}
其他回答
生活例子: https://jsfiddle.net/de4Lt57z/
HTML:
<div class="crop">
<img src="example.jpg" alt="..." />
</div>
CSS:
.crop img{
width:400px;
height:300px;
position: absolute;
clip: rect(0px,200px, 150px, 0px);
}
解释: 在这里，图像是根据图像的宽度和高度值调整大小。裁剪是通过剪辑属性完成的。
有关剪辑属性的详细信息请参见: http://tympanus.net/codrops/2013/01/16/understanding-the-css-clip-property/
如果您正在使用<img>标记，那么Object-fit可能会帮助您
下面的代码将为您裁剪图像。你可以尝试一下合身的衣服
img {
object-fit: cover;
width: 300px;
height: 337px;
}
我所做的是创建一个服务器端脚本，它将在服务器端调整大小和裁剪图片，这样它就会在互联网上发送更少的数据。
它相当简单，但如果有人感兴趣，我可以挖掘并发布代码(asp.net)
谢谢sanchothefat。
我对你的回答有改进的地方。由于裁剪是非常适合每一个图像，这个定义应该在HTML而不是CSS。
<div style="overflow:hidden;">
<img src="img.jpg" alt="" style="margin:-30% 0px -10% 0px;" />
</div>
你也可以使用一个叫做Croppie的工具来裁剪图片…
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<link href="https://foliotek.github.io/Croppie/croppie.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"> </script>
<script src="https://foliotek.github.io/Croppie/croppie.js"> </script>
<script src="https://foliotek.github.io/Croppie/bower_components/exif-js/exif.js"> </script>
<style>
#page {
background: #ffffff;
padding: 20px;
margin: 20px;
}
#demo-basic {
width: 600px;
height: 600px;
}
</style>
</head>
<body>
<h1>Crop Image Demo</h1>
<input id="upload" type="file" />
<br />
<div id="page">
<div id="demo-basic"></div>
</div>
<input id="upload-result" type="button" value="Crop Image"/>
<br />
<img id="cropped-result" src=""/>
<script>
var $uploadCrop;
$("#upload").on("change", function () { readFile(this); show(); });
$("#upload-result").on("click", function (ev) {
$uploadCrop.croppie("result", {
type: "canvas",
size: "viewport"
}).then(function (resp) {
$("#cropped-result").attr("src", resp);
});
});
function show() {
$uploadCrop = $("#demo-basic").croppie({
viewport: { width: 100, height: 100 },
boundary: { width: 300, height: 300 },
enableResize: true,
enableOrientation: true,
mouseWheelZoom: 'ctrl',
enableExif: true
});
}
function readFile(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function (e) {
$("#demo-basic").addClass("ready");
$uploadCrop.croppie("bind", {
url: e.target.result
}).then(function () {
console.log("jQuery bind complete");
});
}
reader.readAsDataURL(input.files[0]);
}
else {
alert("Sorry - you're browser doesn't support the FileReader API");
}
}
</script>
</body>
</html>
