<html><head lang="en">
<meta charset="UTF-8">
<title>Crop Box</title>
<link rel="stylesheet" href="style.css" type="text/css" />
<style> .container {position: absolute;
top: 10%; left: 10%; right: 0; bottom: 0;
}
.action {width: 400px;
height: 30px;
margin: 10px 0;
}
.cropped>img
{margin-right: 10px;
}
</style></head><body><script src="http://code.jquery.com/jquery-1.11.1.min.js"></script>
<script src="../cropbox.js"></script>
<div class="container">
<div class="imageBox">
<div class="thumbBox"></div>
<div class="spinner" style="display: none">Loading...</div>
</div><div class="action">
<input type="file" id="file" style="float:left; width: 250px">
<input type="button" id="btnCrop" value="Crop" style="float: right">
<input type="button" id="btnZoomIn" value="+" style="float: right">
<input type="button" id="btnZoomOut" value="-" style="float: right">
</div><div class="cropped">
</div></div><script type="text/javascript">
$(window).load(function() {
var options =
{thumbBox: '.thumbBox',
spinner: '.spinner',
imgSrc: 'avatar.png'
}
var cropper;
$('#file').on('change', function(){
var reader = new FileReader();
reader.onload = function(e) {
options.imgSrc = e.target.result;
cropper = $('.imageBox').cropbox(options);
}
reader.readAsDataURL(this.files[0]);
this.files = [];
})
$('#btnCrop').on('click', function(){
var img = cropper.getDataURL()
$('.cropped').append('<img src="'+img+'">');
})
$('#btnZoomIn').on('click', function(){
cropper.zoomIn();
})
$('#btnZoomOut').on('click', function(){
cropper.zoomOut();
})
});
</script></body></html>.imageBox
.imageBox{position: relative;
height: 400px;
width: 400px;
border:1px solid #aaa;
background: #fff;
overflow: hidden;
background-repeat: no-repeat;
cursor:move;
}
.imageBox .thumbBox
{position: absolute;
top: 50%;
left: 50%;
width: 200px;
height: 200px;
margin-top: -100px;
margin-left: -100px;
border: 1px solid rgb(102, 102, 102);
box-shadow: 0 0 0 1000px rgba(0, 0, 0, 0.5);
background: none repeat scroll 0% 0% transparent;
}
.imageBox .spinner
{position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
text-align: center;
line-height: 400px;
background: rgba(0,0,0,0.7);
}
/**
/** * Created by ezgoing on 14/9/2014. */"use strict";(function (factory) {
if (typeof define === 'function' && define.amd) {
define(['jquery'], factory);
} else {factory(jQuery);
}
}(function ($) {
var cropbox = function(options, el){
var el = el || $(options.imageBox),
obj = { state : {},ratio : 1,
options : options,
imageBox : el,
thumbBox : el.find(options.thumbBox),
spinner : el.find(options.spinner),
image : new Image(),
getDataURL: function ()
{var width = this.thumbBox.width(),
height = this.thumbBox.height(),
canvas = document.createElement("canvas"),
dim = el.css('background-position').split(' '),
size = el.css('background-size').split(' '),
dx = parseInt(dim[0]) - el.width()/2 + width/2,
dy = parseInt(dim[1]) - el.height()/2 + height/2,
dw = parseInt(size[0]),
dh = parseInt(size[1]),
sh = parseInt(this.image.height),
sw = parseInt(this.image.width);
canvas.width = width;
canvas.height = height;
var context = canvas.getContext("2d");
context.drawImage(this.image, 0, 0, sw, sh, dx, dy, dw, dh);
var imageData = canvas.toDataURL('image/png');
return imageData;
},
getBlob: function()
{var imageData = this.getDataURL();
var b64 = imageData.replace('data:image/png;base64,','');
var binary = atob(b64);
var array = [];
for (var i = 0; i < binary.length; i++) {
array.push(binary.charCodeAt(i));
}
return new Blob([new Uint8Array(array)], {type: 'image/png'});
},
zoomIn: function ()
{this.ratio*=1.1;
setBackground();},
zoomOut: function ()
{this.ratio*=0.9;
setBackground();}
},
setBackground = function()
{var w = parseInt(obj.image.width)*obj.ratio;
var h = parseInt(obj.image.height)*obj.ratio;
var pw = (el.width() - w) / 2;
var ph = (el.height() - h) / 2;
el.css({
'background-image': 'url(' + obj.image.src + ')',
'background-size': w +'px ' + h + 'px',
'background-position': pw + 'px ' + ph + 'px',
'background-repeat': 'no-repeat'});
},
imgMouseDown = function(e)
{e.stopImmediatePropagation();
obj.state.dragable = true;
obj.state.mouseX = e.clientX;
obj.state.mouseY = e.clientY;
},
imgMouseMove = function(e)
{e.stopImmediatePropagation();
if (obj.state.dragable)
{var x = e.clientX - obj.state.mouseX;
var y = e.clientY - obj.state.mouseY;
var bg = el.css('background-position').split(' ');
var bgX = x + parseInt(bg[0]);
var bgY = y + parseInt(bg[1]);
el.css('background-position', bgX +'px ' + bgY + 'px');
obj.state.mouseX = e.clientX;
obj.state.mouseY = e.clientY;
}
},
imgMouseUp = function(e)
{e.stopImmediatePropagation();
obj.state.dragable = false;
},
zoomImage = function(e)
{e.originalEvent.wheelDelta > 0 || e.originalEvent.detail < 0 ? obj.ratio*=1.1 : obj.ratio*=0.9;
setBackground();}
obj.spinner.show();
obj.image.onload = function() {
obj.spinner.hide();
setBackground();el.bind('mousedown', imgMouseDown);
el.bind('mousemove', imgMouseMove);
$(window).bind('mouseup', imgMouseUp);
el.bind('mousewheel DOMMouseScroll', zoomImage);
};
obj.image.src = options.imgSrc;
el.on('remove', function(){$(window).unbind('mouseup', imgMouseUp)});
return obj;
};
jQuery.fn.cropbox = function(options){
return new cropbox(options, this);
};
}));