<?php
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/**
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* 参数规范：
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*
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* $_POST['count'] 小图个数
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* $_POST['width'.number] 第number个小图的宽
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* $_POST['height'.number] 第number个小图的高
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* $_POST['x'.number] 第number个小图的起始切图点的x坐标
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* $_POST['scale'.number] 缩放比例
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* $_POST['img'.number] 源文件名，不带路径，带后缀，如：xxxx.jpg
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*/
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class Sizer {
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//设置图片保存路径
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private $_path;
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//小图计数
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private $_count;
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//post过来的数据存这里，二维数组，一维的key是数字
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private $_paramsArr;
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private $_oriImg;
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private $_resultImgArr;
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private $ossurl;
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function Sizer($path, $ossurl = ''){
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$this->_path=$path;
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$this->_paramsArr=array();
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$this->_count=0;
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$this->ossurl = $ossurl;
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}
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//唯一的参数，生成小图后是否删除原图？
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function sizeIt($picdelete='1'){
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//到底要生成几个小图
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if(isset($_POST['count'])){
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$this->_count=intval($_POST['count']);
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}
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//post过来的参数保存到自己的私有属性里
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for($i=1;$i<=$this->_count;$i++){
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$p = array('width'=>$_POST['width'],
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'height'=>$_POST['height'],
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'x'=>$_POST['x'],
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'y'=>$_POST['y'],
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'scale'=> $_POST['scale']); //传的img字符串要包括扩展名
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if ($this->ossurl != ''){
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$p['img'] = str_replace($this->ossurl.'/data', '../data', $_POST['img'.$i]);
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}else{
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$p['img'] = $_POST['img'.$i];
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}
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$this->_paramsArr[$i-1] = $p;
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}
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//trace($this->_paramsArr);
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//依次生成每个小图
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if(!file_exists($this->_path)){
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@mkdir($this->_path,0777,true);
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}
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$idx=0;
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foreach($this->_paramsArr as $key=>$value){
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$idx++;
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$parts=explode('.',$value['img']);
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$t_name[$idx] = $this->resizeThumbnailImage(//目前的算法是小图在大图文件名后加'_number',比如xxx.jpg的第二种小图是xxx_2.jpg
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$this->_path.(time().rand(100,999)).'_'.$idx.'.'.end($parts),
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$value['img'],
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$value['width'],
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$value['height'],
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$value['x'],
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$value['y'],
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$value['scale']);
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}
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if($picdelete=='1')
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{
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$deleteImg = $this->_path.end(explode('/',$_POST['img1']));
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$pictype=getimagesize($deleteImg);
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if($pictype[2]=='1' || $pictype[2]=='2' || $pictype[2]=='3')
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{
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@unlink($deleteImg);
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}
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}elseif($picdelete=='2' && $idx=='1'){
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$t_name[2] = $_POST['img1'];
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}
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return $t_name;
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}
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//预览后，实际调整图片大小的函数
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function resizeThumbnailImage( $thumb_image_name, //小图文件名，包括路径
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$image, //要剪裁的文件名，包括路径
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$width, //要切多宽
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$height, //要切多长
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$start_width, //开始切图的x坐标点
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$start_height, //开始切图的y坐标点
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$scale //缩放比例
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)
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{
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list($imagewidth, $imageheight, $imageType) = getimagesize($image);
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$imageType = image_type_to_mime_type($imageType);
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$newImageWidth = ceil($width * $scale);
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$newImageHeight = ceil($height * $scale);
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//$newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
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switch($imageType) {
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case "image/gif":
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$source=imagecreatefromgif($image);
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break;
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case "image/pjpeg":
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case "image/jpeg":
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case "image/jpg":
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$source=imagecreatefromjpeg($image);
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break;
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case "image/png":
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case "image/x-png":
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$source=imagecreatefrompng($image);
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break;
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}
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//imagecopyresampled($newImage,$source,0,0,$start_width,$start_height,$newImageWidth,$newImageHeight,$width,$height);
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//GD2.0.1
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if (function_exists("imagecreatetruecolor")){
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$newImage = imagecreatetruecolor($newImageWidth, $newImageHeight);
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if(in_array($imageType, array('image/gif', 'image/png', 'image/x-png'))){
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$color = imagecolorallocate($newImage,255,255,255);
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imagecolortransparent($newImage,$color);
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imagefill($newImage,0,0,$color);
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}
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ImageCopyResampled($newImage, $source, 0, 0, $start_width, $start_height, $newImageWidth, $newImageHeight, $width, $height);
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}else{
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$newImage = imagecreate($newImageWidth, $newImageHeight);
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if(in_array($imageType, array('image/gif', 'image/png', 'image/x-png'))){
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$color = imagecolorallocate($newImage,255,255,255);
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imagecolortransparent($newImage,$color);
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imagefill($newImage,0,0,$color);
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}
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ImageCopyResized($newImage, $source, 0, 0, $start_width, $start_height, $newImageWidth, $newImageHeight, $width, $height);
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}
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switch($imageType) {
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case "image/gif":
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imagegif($newImage,$thumb_image_name);
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break;
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case "image/pjpeg":
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case "image/jpeg":
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case "image/jpg":
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imagejpeg($newImage,$thumb_image_name,90);
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break;
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case "image/png":
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case "image/x-png":
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imagepng($newImage,$thumb_image_name);
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break;
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}
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chmod($thumb_image_name, 0666);
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return $thumb_image_name;
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}
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//==========================================
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// 函数: waterMarkimg($destination,$image_size,$destination_folder)
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// 功能: 给图片加水印
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// 参数: $destination 图片文件名
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// 参数: $image_size 大小数组(包含二个字符串)
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//destination_folder文件存放路径
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// 返回: 1 成功 成功时返回生成的图片路径
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//==========================================
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function waterMarkimg($destination)
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{
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global $config;
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$waterimg = APP_PATH.$config['sy_watermark'];
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$image_size = getimagesize($destination);
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$iinfo=getimagesize($destination,$iinfo);//取得GIF、JPEG、PNG或SWF图形的大小
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$iinfo2=getimagesize($waterimg,$iinfo2);//取得GIF、JPEG、PNG或SWF水印图形的大小
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$nimage=imagecreatetruecolor($image_size[0],$image_size[1]);//建立一个新的图形
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$white=imagecolorallocate($nimage,255,255,255);//分配图形的颜色
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$black=imagecolorallocate($nimage,0,0,0);//分配图形的颜色
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$red=imagecolorallocate($nimage,255,0,0);//分配图形的颜色
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imagefill($nimage,0,0,$white);//将图形着色
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switch ($iinfo[2])
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{
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case 1:
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$simage =imagecreatefromgif($destination);//从文件或URL建立一个新的图形
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break;
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case 2:
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$simage =imagecreatefromjpeg($destination);
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break;
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case 3:
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$simage =imagecreatefrompng($destination);
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break;
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case 6:
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$simage =imagecreatefromwbmp($destination);
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break;
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default:$this->errorType=5;//不支持的文件类型
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return;
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}
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imagecopy($nimage,$simage,0,0,0,0,$image_size[0],$image_size[1]);
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// imagefilledrectangle($nimage,1,$image_size[1]-15,80,$image_size[1],$white);//建立一个矩形并且填满颜色
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switch ($iinfo2[2]){
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case 1:
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$simage1 =imagecreatefromgif($waterimg);
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break;
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case 2:
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$simage1 =imagecreatefromjpeg($waterimg);
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break;
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case 3:
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$simage1 =imagecreatefrompng($waterimg);
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break;
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case 6:
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$simage1 =imagecreatefromwbmp($waterimg);
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break;
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default:
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$this->errorType=6;//不支持的水印文件类型
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return;
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}
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$gifsize=getimagesize($waterimg);//取得GIF、JPEG、PNG或SWF图形的大小
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switch($config['wmark_position']){//水印位置
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case 1:// 上左
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imagecopy($nimage,$simage1,0,0,0,0,$gifsize[0],$gifsize[1]); // 左下
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break;
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case 2:// 上中
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imagecopy($nimage,$simage1,($image_size[0]-$gifsize[0])/2,0,0,0,$gifsize[0],$gifsize[1]); // 左下
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break;
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case 3:// 右上
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imagecopy($nimage,$simage1,$image_size[0]-$gifsize[0],0,0,0,$gifsize[0],$gifsize[1]);
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break;
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case 4:// 中左
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imagecopy($nimage,$simage1,0,($image_size[1]-$gifsize[1])/2,0,0,$gifsize[0],$gifsize[1]); // 左下
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break;
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case 5:// 居中
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imagecopy($nimage,$simage1,($image_size[0]-$gifsize[0])/2, ($image_size[1]-$gifsize[1])/2,0,0,$gifsize[0],$gifsize[1]);
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break;
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case 6:// 中右
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imagecopy($nimage,$simage1,$image_size[0]-$gifsize[0],($image_size[1]-$gifsize[1])/2,0,0,$gifsize[0],$gifsize[1]); // 左下
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break;
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case 9:// 右下
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imagecopy($nimage,$simage1,$image_size[0]-$gifsize[0], $image_size[1]-$gifsize[1],0,0,$gifsize[0],$gifsize[1]);
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break;
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case 7:// 左下
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imagecopy($nimage,$simage1,0,$image_size[1]-$gifsize[1],0,0,$gifsize[0],$gifsize[1]); // 左下
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break;
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case 8:// 底中
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imagecopy($nimage,$simage1,($image_size[0]-$gifsize[0])/2,$image_size[1]-$gifsize[1],0,0,$gifsize[0],$gifsize[1]); // 左下
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break;
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}
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imagedestroy($simage1);// 结束图形
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switch ($iinfo[2]){
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case 1:
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imagejpeg($nimage, $destination);
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break;
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case 2:
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imagejpeg($nimage, $destination);
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break;
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case 3:
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imagepng($nimage, $destination);
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break;
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case 6:
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imagewbmp($nimage, $destination);
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break;
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}
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//覆盖原上传文件
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imagedestroy($nimage);// 结束图形
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imagedestroy($simage);// 结束图形
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return $destination;
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}
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}
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?>
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