19 changed files with 296 additions and 26 deletions
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Before Width: | Height: | Size: 20 KiB |
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After Width: | Height: | Size: 556 B |
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After Width: | Height: | Size: 1.8 KiB |
@ -0,0 +1,119 @@ |
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function DragImgUpload(id,options) { |
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this.me = $(id); |
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var defaultOpt = { |
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boxWidth:'120px', |
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boxHeight:'auto' |
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} |
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this.preview = $('<div id="preview"><img src="/static/img/upload.png" class="img-responsive" style="width: 100%;height: auto;" alt="" title=""> </div>'); |
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this.opts=$.extend(true, defaultOpt,{ |
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}, options); |
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this.init(); |
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this.callback = this.opts.callback; |
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} |
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//定义原型方法
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DragImgUpload.prototype = { |
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init:function () { |
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this.me.append(this.preview); |
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this.me.append(this.fileupload); |
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this.cssInit(); |
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this.eventClickInit(); |
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}, |
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cssInit:function () { |
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this.me.css({ |
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'width':this.opts.boxWidth, |
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'height':this.opts.boxHeight, |
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'border':'1px solid #cccccc', |
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'padding':'10px', |
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'cursor':'pointer' |
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}) |
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this.preview.css({ |
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'height':'100%', |
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'overflow':'hidden' |
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}) |
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}, |
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onDragover:function (e) { |
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e.stopPropagation(); |
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e.preventDefault(); |
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e.dataTransfer.dropEffect = 'copy'; |
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}, |
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onDrop:function (e) { |
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var self = this; |
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e.stopPropagation(); |
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e.preventDefault(); |
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var fileList = e.dataTransfer.files; //获取文件对象
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// do something upload
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if(fileList.length == 0){ |
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return false; |
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} |
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//检测文件是不是图片
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if(fileList[0].type.indexOf('image') === -1){ |
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alert("您拖的不是图片！"); |
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return false; |
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} |
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//拖拉图片到浏览器，可以实现预览功能
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var img = window.URL.createObjectURL(fileList[0]); |
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var filename = fileList[0].name; //图片名称
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var filesize = Math.floor((fileList[0].size)/1024); |
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if(filesize>500){ |
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alert("上传大小不能超过500K."); |
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return false; |
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} |
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self.me.find("img").attr("src",img); |
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self.me.find("img").attr("title",filename); |
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if(this.callback){ |
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this.callback(fileList); |
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} |
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}, |
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eventClickInit:function () { |
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var self = this; |
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this.me.unbind().click(function () { |
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self.createImageUploadDialog(); |
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}) |
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var dp = this.me[0]; |
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dp.addEventListener('dragover', function(e) { |
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self.onDragover(e); |
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}); |
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dp.addEventListener("drop", function(e) { |
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self.onDrop(e); |
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}); |
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}, |
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onChangeUploadFile:function () { |
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var fileInput = this.fileInput; |
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var files = fileInput.files; |
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var file = files[0]; |
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var img = window.URL.createObjectURL(file); |
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var filename = file.name; |
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this.me.find("img").attr("src",img); |
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this.me.find("img").attr("title",filename); |
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if(this.callback){ |
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this.callback(files); |
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} |
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}, |
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createImageUploadDialog:function () { |
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var fileInput = this.fileInput; |
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if (!fileInput) { |
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//创建临时input元素
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fileInput = document.createElement('input'); |
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//设置input type为文件类型
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fileInput.type = 'file'; |
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//设置文件name
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fileInput.name = 'ime-images'; |
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//允许上传多个文件
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fileInput.multiple = true; |
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fileInput.onchange = this.onChangeUploadFile.bind(this); |
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this.fileInput = fileInput; |
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} |
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//触发点击input点击事件，弹出选择文件对话框
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fileInput.click(); |
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} |
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} |
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