/js/jquery.imgareaselect-0.9.10/css/imgareaselect-default.css
引用js
/js/jquery.imgareaselect-0.9.10/scripts/jquery.imgareaselect.min.js /js/AjaxFileUploaderV2.1/ajaxfileupload.js
html
<div> <img src='https://www.jb51.net/blank.jpg'> </div> <div > <img src="https://www.jb51.net/blank.jpg" /> </div> <form> <input type="hidden" value="" /> <input type="hidden" value="" /> <input type="hidden" value="" /> <input type="hidden" value="" /> <input type="hidden" value="" /> <input type="submit" value="确定" /> </form>
jQuery代码
$("#mainimg_src", content).load(function () { crop($("#mainimg", content)); }); function crop($img) { //$img是 //缩小比例 var scalex =$img.width() / $("#mainimg_src").width(); var scaley =$img.height() / $("#mainimg_src").height(); $img.imgAreaSelect({ x1:0,y1:0,x2:150,y2:150, handles: true, aspectRatio: '1:1', onSelectEnd: function (img, selection) { var scaleX = 100 / (selection.width || 1); var scaleY = 100 / (selection.height || 1); $('#mainimgthumb').css({ width: Math.round(scaleX * 400) + 'px', height: Math.round(scaleY * 300) + 'px', marginLeft: '-' + Math.round(scaleX * selection.x1) + 'px', marginTop: '-' + Math.round(scaleY * selection.y1) + 'px' }); $('input[name="x1"]', content).val(selection.x1/scalex); $('input[name="y1"]', content).val(selection.y1/scaley); $('input[name="x2"]', content).val(selection.x2/scalex); $('input[name="y2"]', content).val(selection.y2/scaley); } }); }
确定裁剪
//确定剪切 $("form[name=fmCrop]", content).submit(function () { var data = $("form[name=fmCrop]", content).serializeArray(); $.get('/members/web-members-rest/crop.html', data, function (r) { switch (r.result) { case "Success": jAlert("操作成功"); $("#left_mainimg").attr("src", "https://www.jb51.net/" + r.path + '?a=' + (new Date()).format('yyyyMMddhhmmss')); $("#myPreview", content).css("display", "block"); $("#myPreview", content).prev().css("display", "none"); $("#mainimg", content).imgAreaSelect({ hide: true }); $("form[name=fmUpload]", content).css("display", "none"); $("input[name=btnSubmit]", content).css("display", "none"); break; } }); return false; });
服务器端php代码
public function actionCrop($src_path,$x1,$x2,$y1,$y2){ $pic =$src_path; $width = $x2-$x1; $height = $y2-$y1; $type=exif_imagetype($pic); //判断文件类型 $support_type=array(IMAGETYPE_JPEG , IMAGETYPE_PNG , IMAGETYPE_GIF); if(!in_array($type, $support_type,true)) { echo "this type of image does not support! only support jpg , gif or png"; exit(); } switch($type) { case IMAGETYPE_JPEG : $image = imagecreatefromjpeg($pic); break; case IMAGETYPE_PNG : $image = imagecreatefrompng($pic); break; case IMAGETYPE_GIF : $image = imagecreatefromgif($pic); break; default: echo "Load image error!"; exit(); } $copy = $this->PIPHP_ImageCrop($image, $x1, $y1, $width, $height);//裁剪 imagejpeg($copy, $src_path); //替换新图 return ['result'=>'Success','path'=>$src_path]; //返回新图地址 } function PIPHP_ImageCrop($image, $x, $y, $w, $h){ $tw = imagesx($image); $th = imagesy($image); if ($x > $tw || $y > $th || $w > $tw || $h > $th) return FALSE; $temp = imagecreatetruecolor($w, $h); imagecopyresampled($temp, $image, 0, 0, $x, $y, $w, $h, $w, $h); return $temp; }