swoole_framework /libs/system/Image.php

Language PHP Lines 546
MD5 Hash 1b67df208dcaf8558320d00a7ad4394c
Repository https://github.com/monkeycraps/swoole_framework.git View Raw File
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<?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;
}
?>
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