This example is near about what you are trying to achieve.
cropper using jquery
$(document).ready(function(){
var c = $('.img-container img').cropper({
aspectRatio:1/1,
strict:true,
background:false,
guides:false,
autoCropArea:0.6,
rotatable:false,
//using these just to stop box collapsing on itself
minCropBoxWidth:50,
minCropBoxHeight:50,
crop: function(data){
//console.log("data = %o", data);
//console.log("this = %o", $(this));
//test the new height/width
if(data.height < 100 || data.width < 100){
//try to make it stop
//$(this).cropper('disable');
}else{
var json = [
'{"x":' + data.x,
'"y":' + data.y,
'"height":' + data.height,
'"width":' + data.width + '}'
].join();
$('#image-data').val(json);
}
}
}); // cropper
//console.log("C = %o", c);
$('.img-container img').on('dragmove.cropper', function (e) {
console.log('dragmove.cropper');
var $cropper = $(e.target);
// Call getData() or getImageData() or getCanvasData() or
// whatever fits your needs
var data = $cropper.cropper('getCropBoxData');
console.log("data = %o", data);
// Analyze the result
if (data.height <= 150 || data.width <= 150) {
console.log("Minimum size reached!");
// Stop resize
return false;
}
// Continue resize
return true;
}).on('dragstart.cropper', function (e) {
console.log('dragstart.cropper');
var $cropper = $(e.target);
// Get the same data as above
var data = $cropper.cropper('getCropBoxData');
// Modify the dimensions to quit from disabled mode
if (data.height <= 150 || data.width <= 150) {
data.width = 151;
data.height = 151;
$(e.target).cropper('setCropBoxData', data);
}
});
}); // ready
风格:
.img-container img {
width: 800px;
height: auto;
}
HTML:
<script src="//code.jquery.com/jquery-1.11.2.min.js"></script><script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/cropper/0.9.1/cropper.min.js"></script>
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/cropper/0.9.1/cropper.min.css">
<div class="col-md-9">
<div class="img-container"><img alt="Picture" src="http://fengyuanchen.github.io/cropper/img/picture.jpg"></div>
</div>