/libs/system/Image.php
PHP | 546 lines | 390 code | 29 blank | 127 comment | 58 complexity | 1b67df208dcaf8558320d00a7ad4394c MD5 | raw file
- <?php
- /**
- * 图像处理类
- * @author Tianfeng.Han
- * @package SwooleSystem
- * @subpackage Image
- * @link http://code.google.com/p/swoole/
- */
- class Image
- {
- /**
- * 裁切图片
- * @param $pic 源图像
- * @param $dst_pic 目标图像
- * @param $width 宽度
- * @param $height 高度
- * @param $qulitity 质量
- * @return unknown_type
- */
- static function cut($pic,$dst_pic,$width,$height=null,$qulitity=100)
- {
- $im = imagecreatefromjpeg($pic);
-
- if(imagesx($im)>$width)
- {
- $old_w = imagesx($im);
- $old_h = imagesy($im);
-
- if($height==null)
- {
- $w_h = $old_w/$old_h;
- $height = $width*$w_h;
- }
-
- $newim = imagecreatetruecolor($width, $height);
- imagecopyresampled($newim, $im, 0, 0, 0, 0, $width,$height,$old_w,$old_h);
- imagejpeg($newim, $dst_pic,$qulitity);
- imagedestroy($im);
- return true;
- }
- elseif($pic!=$dst_pic) copy($pic,$dst_pic);
- }
- /**
- * 压缩图像尺寸
- * @param $pic 源图像
- * @param $dst_pic 目标图像
- * @param $width 宽度
- * @param $height 高度
- * @param $qulitity 质量
- * @return unknown_type
- */
- static function thumbnail($pic,$dst_pic,$max_width,$max_height=null,$qulitity=100, $copy=true)
- {
- $im = self::readfile($pic);
- $old_w = imagesx($im);
- $old_h = imagesy($im);
-
- if($max_height==null) $max_height=$max_width;
-
- if($old_w>$max_width or $old_h>$max_height)
- {
-
- $w_h = $old_w / $old_h;
- $h_w = $old_h / $old_w;
- if($w_h>$h_w)
- {
- $width = $max_width;
- $height = $width*$h_w;
- }
- else
- {
- $height = $max_height;
- $width = $height*$w_h;
- }
- $newim = imagecreatetruecolor($width, $height);
- imagecopyresampled($newim, $im, 0, 0, 0, 0, $width,$height,$old_w,$old_h);
- imagejpeg($newim, $dst_pic, $qulitity);
- imagedestroy($im);
- }
- elseif($pic!=$dst_pic and $copy) copy($pic, $dst_pic);
- }
- /**
- * 读取图像
- * @param $pic
- * @return unknown_type
- */
- static function readfile($pic)
- {
- $image_info = getimagesize($pic);
- if($image_info["mime"]=="image/jpeg" || $image_info["mime"]=="image/gif" || $image_info["mime"]=="image/png")
- {
- switch($image_info["mime"])
- {
- case "image/jpeg":
- $im = imagecreatefromjpeg($pic);
- break;
- case "image/gif":
- $im = imagecreatefromgif($pic);
- break;
- case "image/png":
- $im = imagecreatefrompng($pic);
- break;
- }
- return $im;
- }
- return false;
- }
- /**
- * 加给图片加水印
- *
- * @param strimg $groundImage 要加水印地址
- * @param int $waterPos 水印位置
- * @param string $waterImage 水印图片地址
- * @param string $waterText 文本文字
- * @param int $textFont 文字大小
- * @param string $textColor 文字颜色
- * @param int $minWidth 小于此值不加水印
- * @param int $minHeight 小于此值不加水印
- * @param float $alpha 透明度
- * @return FALSE
- */
- public static function waterMark($groundImage , $waterPos = 0 , $waterImage = "" , $waterText = "" , $textFont = 15 , $textColor = "#FF0000",$minWidth='100',$minHeight='100',$alpha=0.9)
- {
- $isWaterImg = FALSE;
- $bg_h = $bg_w = $water_h = $water_w = 0;
- //获取背景图的高,宽
- if(is_file($groundImage) && !empty($groundImage)){
- $bg = new Imagick();
- $bg ->readImage($groundImage);
- $bg_h = $bg->getImageHeight();
- $bg_w = $bg->getImageWidth();
- }
- //获取水印图的高,宽
- if(is_file($waterImage) && !empty($waterImage)){
- $water = new Imagick($waterImage);
- $water_h = $water->getImageHeight();
- $water_w = $water->getImageWidth();
- }
- //如果背景图的高宽小于水印图的高宽或指定的高和宽则不加水印
- if($bg_h < $minHeight || $bg_w < $minWidth || $bg_h < $water_h || $bg_w < $water_w ) {
- return ;
- }else {
- $isWaterImg = TRUE;
- }
- //加水印
- if($isWaterImg){
- $dw = new ImagickDraw();
- //加图片水印
- if(is_file($waterImage)){
- $water->setImageOpacity($alpha);
- $dw -> setGravity($waterPos);
- $dw -> composite($water->getImageCompose(),0,0,50,0,$water);
- $bg -> drawImage($dw);
- if(!$bg -> writeImage($groundImage)){
- return FALSE;
- }
- }else{
- //加文字水印
- $dw -> setFontSize($textFont);
- $dw -> setFillColor($textColor);
- $dw -> setGravity($waterPos);
- $dw -> setFillAlpha($alpha);
- $dw -> annotation(0,0,$waterText);
- $bg -> drawImage($dw);
- if(!$bg -> writeImage($groundImage)){
- return FALSE;
- }
- }
- }
- }
- /**
- * PHP图片水印 (水印支持图片或文字)
- * 注意:Support GD 2.0,Support FreeType、GIF Read、GIF Create、JPG 、PNG
- * $waterImage 和 $waterText 最好不要同时使用,选其中之一即可,优先使用 $waterImage。
- * 当$waterImage有效时,参数$waterString、$stringFont、$stringColor均不生效。
- * 加水印后的图片的文件名和 $groundImage 一样。
- * @param $groundImage 背景图片,即需要加水印的图片,暂只支持GIF,JPG,PNG格式;
- * @param $waterPos 水印位置,有10种状态,0为随机位置;1为顶端居左,2为顶端居中,3为顶端居右;4为中部居左,5为中部居中,6为中部居右;7为底端居左,8为底端居中,9为底端居右;
- * @param $waterImage 图片水印,即作为水印的图片,暂只支持GIF,JPG,PNG格式;
- * @param $waterText 文字水印,即把文字作为为水印,支持ASCII码,不支持中文;
- * @param $textFont 文字大小
- * @param $textColor 文字颜色,值为十六进制颜色值,默认为#FF0000(红色);
- * @param $minwidth
- * @param $minheight
- * @return unknown_type
- */
- public static function waterMark2($groundImage , $waterPos = 0 , $waterImage = "" , $waterText = "" , $textFont = 5 , $textColor = "#FF0000",$minwidth,$minheight)
- {
- $isWaterImage = FALSE ;
- //$waterImage = SYSROOTPATH . $waterImage;
-
- $formatMsg = "暂不支持该文件格式,请用图片处理软件将图片转换为GIF、JPG、PNG格式。" ;
- //读取水印文件
- if(!empty( $waterImage ) && file_exists ( $waterImage )) {
- $isWaterImage = TRUE ;
- $water_info = getimagesize ( $waterImage );
- $water_w = $water_info [ 0 ]; //取得水印图片的宽
- $water_h = $water_info [ 1 ]; //取得水印图片的高
-
- switch( $water_info [ 2 ]) //取得水印图片的格式
- {
- case 1 : $water_im = imagecreatefromgif ( $waterImage );break;
- case 2 : $water_im = imagecreatefromjpeg ( $waterImage );break;
- case 3 : $water_im = imagecreatefrompng ( $waterImage );break;
- default:die( $formatMsg );
- }
- }
- //读取背景图片
- if(!empty( $groundImage ) && file_exists ( $groundImage )) {
- $ground_info = getimagesize ( $groundImage );
- $ground_w = $ground_info [ 0 ]; //取得背景图片的宽
- $ground_h = $ground_info [ 1 ]; //取得背景图片的高
-
- switch( $ground_info [ 2 ]) //取得背景图片的格式
- {
- case 1 : $ground_im = imagecreatefromgif ( $groundImage );break;
- case 2 : $ground_im = imagecreatefromjpeg ( $groundImage );break;
- case 3 : $ground_im = imagecreatefrompng ( $groundImage );break;
- default:die( $formatMsg );
- }
- } else {
- die( "需要加水印的图片不存在!" );
- }
- //水印位置
- if( $isWaterImage ) //图片水印
- {
- $w = $water_w ;
- $h = $water_h ;
- $label = "图片的" ;
- }
- else //文字水印
- {
- $temp = imagettfbbox ( ceil ( $textFont * 2.5 ), 0 , SYSROOTPATH."images/watermark/ant1.ttf" , $waterText ); //取得使用 TrueType 字体的文本的范围
- $w = $temp [ 2 ] - $temp [ 6 ];
- $h = $temp [ 3 ] - $temp [ 7 ];
- unset( $temp );
- $label = "文字区域" ;
- }
- // add
- if( ( $ground_w < $w ) || ( $ground_h < $h ) || ( $ground_w < $minwidth ) || ( $ground_h < $minheight ) ){
- echo "需要加水印的图片的长度或宽度比水印" . $label . "还小,无法生成水印!" ;
- return;
- }
- switch( $waterPos ) {
- case 0 : //随机
- $posX = rand ( 0 ,( $ground_w - $w ));
- $posY = rand ( 0 ,( $ground_h - $h ));
- break;
- case 1 : //1为顶端居左
- $posX = 0 ;
- $posY = 0 ;
- break;
- case 2 : //2为顶端居中
- $posX = ( $ground_w - $w ) / 2 ;
- $posY = 0 ;
- break;
- case 3 : //3为顶端居右
- $posX = $ground_w - $w ;
- $posY = 0 ;
- break;
- case 4 : //4为中部居左
- $posX = 0 ;
- $posY = ( $ground_h - $h ) / 2 ;
- break;
- case 5 : //5为中部居中
- $posX = ( $ground_w - $w ) / 2 ;
- $posY = ( $ground_h - $h ) / 2 ;
- break;
- case 6 : //6为中部居右
- $posX = $ground_w - $w ;
- $posY = ( $ground_h - $h ) / 2 ;
- break;
- case 7 : //7为底端居左
- $posX = 0 ;
- $posY = $ground_h - $h ;
- break;
- case 8 : //8为底端居中
- $posX = ( $ground_w - $w ) / 2 ;
- $posY = $ground_h - $h ;
- break;
- case 9 : //9为底端居右
- $posX = $ground_w - $w ;
- $posY = $ground_h - $h ;
- break;
- default: //随机
- $posX = rand ( 0 ,( $ground_w - $w ));
- $posY = rand ( 0 ,( $ground_h - $h ));
- break;
- }
- //设定图像的混色模式
- imagealphablending ( $ground_im , true );
- if( $isWaterImage ) //图片水印
- {
- imagecopy ( $ground_im , $water_im , $posX , $posY , 0 , 0 , $water_w , $water_h ); //拷贝水印到目标文件
- }
- else //文字水印
- {
- if( !empty( $textColor ) && ( strlen ( $textColor )== 7 ) )
- {
- $R = hexdec ( substr ( $textColor , 1 , 2 ));
- $G = hexdec ( substr ( $textColor , 3 , 2 ));
- $B = hexdec ( substr ( $textColor , 5 ));
- }
- else
- {
- die( "水印文字颜色格式不正确!" );
- }
- imagestring ( $ground_im , $textFont , $posX , $posY , $waterText , imagecolorallocate ( $ground_im , $R , $G , $B ));
- }
- //生成水印后的图片
- @unlink ( $groundImage );
- switch( $ground_info [ 2 ]) //取得背景图片的格式
- {
- case 1 : imagegif ( $ground_im , $groundImage );break;
- case 2 : imagejpeg ( $ground_im , $groundImage );break;
- case 3 : imagepng ( $ground_im , $groundImage );break;
- default:die( $errorMsg );
- }
- //释放内存
- if(isset( $water_info )) unset( $water_info );
- if(isset( $water_im )) imagedestroy ( $water_im );
- unset( $ground_info );
- imagedestroy ( $ground_im );
- }
- /**
- * 生成验证码使用GD
- * @param $img_width
- * @param $img_height
- * @return unknown_type
- */
- static function authcode_gd($img_width=80,$img_height=30)
- {
- session_start();
- $authnum = '';
- srand(microtime() * 100000);
- for($Tmpa=0;$Tmpa<4;$Tmpa++)
- {
- $authnum.=dechex(rand(0,15));
- }
- $authnum = strtoupper($authnum);;
- $_SESSION['authcode'] = $authnum;
-
- $aimg = imageCreate($img_width,$img_height); //生成图片
- ImageColorAllocate($aimg, 255,255,255); //图片底色,ImageColorAllocate第1次定义颜色PHP就认为是底色了
-
- //下面该生成雪花背景了,其实就是在图片上生成一些符号
- for($i=1; $i<=128; $i++)
- {
- imageString($aimg,1,mt_rand(1,$img_width),mt_rand(1,$img_height),"*",imageColorAllocate($aimg,mt_rand(200,255),mt_rand(200,255),mt_rand(200,255)));
- //其实也不是雪花,就是生成*号而已。为了使它们看起来"杂乱无章、5颜6色",就得在1个1个生成它们的时候,让它们的位置、颜色,甚至大小都用随机数,rand()或mt_rand都可以完成。
- }
- for($i=0;$i<strlen($_SESSION['authcode']);$i++)
- {
- imageString($aimg, mt_rand(8,12),$i*$img_width/4+mt_rand(1,8),mt_rand(1,$img_height/4), $_SESSION['authcode'][$i],imageColorAllocate($aimg,mt_rand(0,100),mt_rand(0,150),mt_rand(0,200)));
- }
- header("Content-type: image/png"); //告诉浏览器,下面的数据是图片
- ImagePng($aimg); //生成png格式
- ImageDestroy($aimg);
- }
- static function authcode_im()
- {
- if(empty($_SESSION)) session_start();
- $authnum = '';
- srand((double)microtime()*1000000);
- $_SESSION['authcode']="";
-
- /* imagick对象 *
- $Imagick = new Imagick();
-
- /* 背景对象 */
- $bg = new ImagickPixel();
-
- /* Set the pixel color to white */
- $bg->setColor('rgb(235,235,235)');
-
- /* 画刷 *
- $ImagickDraw = new ImagickDraw();
-
- /* Set font and font size. You can also specify /path/to/font.ttf */
- $ImagickDraw->setFont(LIBPATH.'/../static/fonts/CONSOLA.TTF');
- $ImagickDraw->setFontSize( 24 );
- $ImagickDraw->setFillColor('black');
-
- //生成数字和字母混合的验证码方法
- $ychar="0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z";
- $list=explode(",",$ychar);
- for($i=0;$i<4;$i++)
- {
- $randnum=rand(0,35);
- $authnum.=$list[$randnum];
- }
- $authnum = strtoupper($authnum);;
- $_SESSION['authcode'] = $authnum;
-
- /* Create new empty image */
- $Imagick->newImage( 60, 24, $bg );
-
- /* Write the text on the image */
- $Imagick->annotateImage( $ImagickDraw, 4, 20, 0, $authnum );
-
- /* 变形 *
- //$Imagick->swirlImage( 10 );
-
- /* 随即线条 */
- /*$ImagickDraw->line( rand( 0, 70 ), rand( 0, 30 ), rand( 0, 70 ), rand( 0, 30 ) );
- $ImagickDraw->line( rand( 0, 70 ), rand( 0, 30 ), rand( 0, 70 ), rand( 0, 30 ) );
- $ImagickDraw->line( rand( 0, 70 ), rand( 0, 30 ), rand( 0, 70 ), rand( 0, 30 ) );
- $ImagickDraw->line( rand( 0, 70 ), rand( 0, 30 ), rand( 0, 70 ), rand( 0, 30 ) );
- $ImagickDraw->line( rand( 0, 70 ), rand( 0, 30 ), rand( 0, 70 ), rand( 0, 30 ) );*/
-
- /* Draw the ImagickDraw object contents to the image. */
- $Imagick->drawImage( $ImagickDraw );
-
- /* Give the image a format */
- $Imagick->setImageFormat( 'png' );
-
- /* Send headers and output the image */
- //header( "Content-Type: image/{$Imagick->getImageFormat()}" );
- echo $Imagick->getImageBlob( );
- }
- /**
- * 生成验证码,使用TTF字体
- * @param $font
- * @param $img_width
- * @param $img_height
- * @return unknown_type
- */
- static function authcode_ttf($font,$width=180,$height=130)
- {
- if(empty($_SESSION)) session_start();
- $length = 4;
- $code = getRandNumChineseString(4);
-
- $width = ($length * 45) > $width ? $length * 45 : $width;
- $_SESSION['authcode'] = md5($code);
- $im = imagecreatetruecolor($width, $height);
- $borderColor = imagecolorallocate($im, 100, 100, 100); //边框色
- $bkcolor = imagecolorallocate($im, 250, 250, 250);
- imagefill($im, 0, 0, $bkcolor);
- imagerectangle($im, 0, 0, $width - 1, $height - 1, $borderColor);
- // 干扰
- for ($i = 0; $i < 15; $i++) {
- $fontcolor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
- imagearc($im, mt_rand(-10, $width), mt_rand(-10, $height), mt_rand(30, 300), mt_rand(20, 200), 55, 44, $fontcolor);
- }
- for ($i = 0; $i < 255; $i++) {
- $fontcolor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
- imagesetpixel($im, mt_rand(0, $width), mt_rand(0, $height), $fontcolor);
- }
-
- for ($i = 0; $i < $length; $i++) {
- $fontcolor = imagecolorallocate($im, mt_rand(0, 120), mt_rand(0, 120), mt_rand(0, 120)); //这样保证随机出来的颜色较深。
- $codex = msubstr($code, $i, 1);
- imagettftext($im, mt_rand(16, 20), mt_rand(-60, 60), 40 * $i + 20, mt_rand(30, 35), $fontcolor, $font, $codex);
- }
- Header("Content-type: image/png"); //告诉浏览器,下面的数据是图片
- ImagePng($im); //生成png格式
- ImageDestroy($im);
- }
- static function thumb_name($file_name,$insert='thumb')
- {
- $dirname = dirname($file_name);
- $file_name = basename($file_name);
- $extend =explode("." , $file_name);
- return $dirname.'/'.$extend[0].'_'.$insert.'.'.$extend[count($extend)-1];
- }
- /**
- * 裁切图片,制作头像
- * @param $image 图片相对网站根目录的地址
- * @param $params 参数,高度height=100,宽度width=116,精度qulitity=80,新图片的地址newfile,原图的真实宽度abs_width
- * @param $original_size 原始的尺寸
- * @param $crop_size 裁切的参数,高度,宽度,四点坐标
- * @return true/false
- */
- static function cropImage($image,$params,$original_size,$crop_size)
- {
- $qulitity = isset($params['qulitity'])?$params['qulitity']:100;
- $dst_width = isset($params['width'])?$params['width']:90;
- $dst_height = isset($params['height'])?$params['height']:105;
-
- $image = WEBPATH.$image;
- if(!file_exists($image))
- return '错误,图片不存在!';
-
- $image_info = getimagesize($image);
-
- if($image_info["mime"]=="image/jpeg" || $image_info["mime"]=="image/gif" || $image_info["mime"]=="image/png")
- {
- /**
- * 计算实际裁剪区域,图片是否被缩放,如果不是真实大小,需要计算
- */
- if(isset($params['abs_width']))
- {
- $tmp_rate = $params['abs_width'] / $original['width'];
- $crop_size['left'] = $crop_size['left'] * $tmp_rate;
- $crop_size['top'] = $crop_size['top'] * $tmp_rate;
- $crop_size['width'] = $crop_size['width'] * $tmp_rate;
- $crop_size['height'] = $crop_size['height'] * $tmp_rate;
- }
-
- //裁剪
- $image_new = imagecreatetruecolor($dst_width, $dst_height);
- switch($image_info["mime"]){
- case "image/jpeg":
- $bin_ori = imagecreatefromjpeg($image);
- break;
- case "image/gif":
- $bin_ori = imagecreatefromgif($image);
- break;
- case "image/png":
- $bin_ori = imagecreatefrompng($image);
- break;
- }
-
- imagecopyresampled($image_new, $bin_ori, 0, 0, $crop_size['left'], $crop_size['top'], $dst_width, $dst_height, $crop_size['width'], $crop_size['height']);
- $file_new = WEBPATH.$params['newfile'];
- if(!file_exists(dirname($file_new))) mkdir(dirname($file_new),0777,true);
- return imagejpeg($image_new, $file_new , $qulitity);
- }
- }
- }
-
- function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true)
- {
- if(function_exists("mb_substr")){
- if ($suffix && strlen($str)>$length)
- return mb_substr($str, $start, $length, $charset)."...";
- else
- return mb_substr($str, $start, $length, $charset);
- }
- elseif(function_exists('iconv_substr')) {
- if ($suffix && strlen($str)>$length)
- return iconv_substr($str,$start,$length,$charset)."...";
- else
- return iconv_substr($str,$start,$length,$charset);
- }
- $re['utf-8'] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/";
- $re['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/";
- $re['gbk'] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/";
- $re['big5'] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/";
- preg_match_all($re[$charset], $str, $match);
- $slice = join("",array_slice($match[0], $start, $length));
- if($suffix) return $slice."…";
- return $slice;
- }
- ?>