PHP 图片处理种

PHP 图片处理类

<?php /** *   images.php  图片处理类 */class ThumbHandler{    var $dst_img;// 目标文件    var $h_src; // 图片资源句柄    var $h_dst;// 新图句柄    var $h_mask;// 水印句柄    var $img_create_quality = 100;// 图片生成质量    var $img_display_quality = 80;// 图片显示质量,默认为75    var $img_scale = 0;// 图片缩放比例    var $src_w = 0;// 原图宽度    var $src_h = 0;// 原图高度    var $dst_w = 0;// 新图总宽度    var $dst_h = 0;// 新图总高度    var $fill_w;// 填充图形宽    var $fill_h;// 填充图形高    var $copy_w;// 拷贝图形宽    var $copy_h;// 拷贝图形高    var $src_x = 0;// 原图绘制起始横坐标    var $src_y = 0;// 原图绘制起始纵坐标    var $start_x;// 新图绘制起始横坐标    var $start_y;// 新图绘制起始纵坐标    var $mask_word;// 水印文字    var $mask_img;// 水印图片    var $mask_pos_x = 0;// 水印横坐标    var $mask_pos_y = 0;// 水印纵坐标    var $mask_offset_x = 5;// 水印横向偏移    var $mask_offset_y = 5;// 水印纵向偏移    var $font_w;// 水印字体宽    var $font_h;// 水印字体高    var $mask_w;// 水印宽    var $mask_h;// 水印高    var $mask_font_color = "#ffffff";// 水印文字颜色    var $mask_font = 2;// 水印字体    var $font_size;// 尺寸    var $mask_position = 0;// 水印位置    var $mask_img_pct = 50;// 图片合并程度,值越大，合并程序越低    var $mask_txt_pct = 50;// 文字合并程度,值越小，合并程序越低    var $img_border_size = 0;// 图片边框尺寸    var $img_border_color;// 图片边框颜色    var $_flip_x=0;// 水平翻转次数    var $_flip_y=0;// 垂直翻转次数    var $cut_type=0;// 剪切类型    var $img_type;// 文件类型// 文件类型定义,并指出了输出图片的函数    var $all_type = array(       				 "jpg"  => array("output"=>"imagejpeg"),       				 "gif"  => array("output"=>"imagegif"),       				 "png"  => array("output"=>"imagepng"),       				 "wbmp" => array("output"=>"image2wbmp"),       				 "jpeg" => array("output"=>"imagejpeg"));    function ThumbHandler()    {        $this->mask_font_color = "#ffffff";        $this->font = 2;        $this->font_size = 12;    }    function getImgWidth($src)    {        return imagesx($src);    }    function getImgHeight($src)    {        return imagesy($src);    }    /**     *  设置图片生成路径     */    function setSrcImg($src_img, $img_type=null)    {        if(!file_exists($src_img))        {            die("图片不存在");        }        if(!empty($img_type))        {            $this->img_type = $img_type;        }        else        {            $this->img_type = $this->_getImgType($src_img);        }        $this->_checkValid($this->img_type);   // file_get_contents函数要求php版本>4.3.0        $src = '';        if(function_exists("file_get_contents"))        {            $src = file_get_contents($src_img);        }        else        {            $handle = fopen ($src_img, "r");            while (!feof ($handle))            {                $src .= fgets($fd, 4096);            }            fclose ($handle);        }        if(empty($src))        {            die("图片源为空");        }        $this->h_src = @ImageCreateFromString($src);        $this->src_w = $this->getImgWidth($this->h_src);        $this->src_h = $this->getImgHeight($this->h_src);    }        function setDstImg($dst_img)    {        $arr  = explode('/',$dst_img);        $last = array_pop($arr);        $path = implode('/',$arr);        $this->_mkdirs($path);        $this->dst_img = $dst_img;    }        /**     * 设置图片显路径     */    function setImgDisplayQuality($n)    {        $this->img_display_quality = (int)$n;    }        function setImgCreateQuality($n)    {        $this->img_create_quality = (int)$n;    }     function setMaskWord($word)    {        $this->mask_word .= $word;    }    function setMaskFontColor($color="#ffffff")    {        $this->mask_font_color = $color;    }     /**     *  水印文件     */    function setMaskFont($font=2)    {        if(!is_numeric($font) && !file_exists($font))        {            die("字体文件不存在");        }        $this->font = $font;    }        /**     * 字体大写     */    function setMaskFontSize($size = "12")    {        $this->font_size = $size;    }     //水印    function setMaskImg($img)    {        $this->mask_img = $img;    }           function setMaskOffsetX($x)    {        $this->mask_offset_x = (int)$x;    }       function setMaskOffsetY($y)    {        $this->mask_offset_y = (int)$y;    }    function setMaskPosition($position=0)    {        $this->mask_position = (int)$position;    }        function setMaskImgPct($n)    {        $this->mask_img_pct = (int)$n;    }       function setMaskTxtPct($n)    {        $this->mask_txt_pct = (int)$n;    }       function setDstImgBorder($size=1, $color="#000000")    {        $this->img_border_size  = (int)$size;        $this->img_border_color = $color;    }    function flipH()    {        $this->_flip_x;    }    function flipV()    {        $this->_flip_y;    }       function setCutType($type)    {        $this->cut_type = (int)$type;    }    function setRectangleCut($width, $height)    {        $this->fill_w = (int)$width;        $this->fill_h = (int)$height;    }      function setSrcCutPosition($x, $y)    {        $this->src_x  = (int)$x;        $this->src_y  = (int)$y;    }    function createImg($a, $b=null)    {        $num = func_num_args();        if(1 == $num)        {            $r = (int)$a;            if($r img_scale = $r;            $this->_setNewImgSize($r);        }        if(2 == $num)        {            $w = (int)$a;            $h = (int)$b;            if(0 == $w)            {                die("目标宽度不能为0");            }            if(0 == $h)            {                die("目标高度不能为0");            }            $this->_setNewImgSize($w, $h);        }        if($this->_flip_x%2!=0)        {            $this->_flipH($this->h_src);        }        if($this->_flip_y%2!=0)        {            $this->_flipV($this->h_src);        }        $this->_createMask();        $this->_output();        if(imagedestroy($this->h_src) && imagedestroy($this->h_dst))        {            Return true;        }        else        {            Return false;        }    }    /**     * 生成水印,调用了生成水印文字和水印图片两个方法     */    function _createMask()    {        if($this->mask_word)        {            // 获取字体信息            $this->_setFontInfo();            if($this->_isFull())            {                die("水印文字过大");            }            else            {                $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);                $white = ImageColorAllocate($this->h_dst,255,255,255);                imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色                $this->_drawBorder();                imagecopyresampled( $this->h_dst, $this->h_src,                                    $this->start_x, $this->start_y,                                    $this->src_x, $this->src_y,                                    $this->fill_w, $this->fill_h,                                    $this->copy_w, $this->copy_h);                $this->_createMaskWord($this->h_dst);            }        }if($this->mask_img)        {            $this->_loadMaskImg();	//加载时，取得宽高            if($this->_isFull())            {                // 将水印生成在原图上再拷                $this->_createMaskImg($this->h_src);                $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);                $white = ImageColorAllocate($this->h_dst,255,255,255);                imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色                $this->_drawBorder();                imagecopyresampled( $this->h_dst, $this->h_src,                                    $this->start_x, $this->start_y,                                    $this->src_x, $this->src_y,                                    $this->fill_w, $this->start_y,                                    $this->copy_w, $this->copy_h);            }            else            {                // 创建新图并拷贝                $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);                $white = ImageColorAllocate($this->h_dst,255,255,255);                imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色                $this->_drawBorder();                imagecopyresampled( $this->h_dst, $this->h_src,                                    $this->start_x, $this->start_y,                                    $this->src_x, $this->src_y,                                    $this->fill_w, $this->fill_h,                                    $this->copy_w, $this->copy_h);                $this->_createMaskImg($this->h_dst);            }        }if(empty($this->mask_word) && empty($this->mask_img))        {            $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);            $white = ImageColorAllocate($this->h_dst,255,255,255);            imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色            $this->_drawBorder();            imagecopyresampled( $this->h_dst, $this->h_src,$this->start_x, $this->start_y,$this->src_x, $this->src_y,$this->fill_w, $this->fill_h,$this->copy_w, $this->copy_h);        }    }    function _drawBorder()    {        if(!empty($this->img_border_size))        {            $c = $this->_parseColor($this->img_border_color);            $color = ImageColorAllocate($this->h_src,$c[0], $c[1], $c[2]);            imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$color);// 填充背景色        }    }    function _createMaskWord($src)    {        $this->_countMaskPos();        $this->_checkMaskValid();        $c = $this->_parseColor($this->mask_font_color);        $color = imagecolorallocatealpha($src, $c[0], $c[1], $c[2], $this->mask_txt_pct);        if(is_numeric($this->font))        {            imagestring($src,$this->font,$this->mask_pos_x, $this->mask_pos_y,$this->mask_word,$color);        }        else        {            imagettftext($src,$this->font_size, 0,$this->mask_pos_x, $this->mask_pos_y,$color,$this->font,$this->mask_word);        }    }    function _createMaskImg($src)    {        $this->_countMaskPos();        $this->_checkMaskValid();        imagecopymerge($src,$this->h_mask,$this->mask_pos_x ,$this->mask_pos_y0, 0,$this->mask_w, $this->mask_h,$this->mask_img_pct);        imagedestroy($this->h_mask);    }    function _loadMaskImg()    {        $mask_type = $this->_getImgType($this->mask_img);        $this->_checkValid($mask_type);		// file_get_contents函数要求php版本>4.3.0        $src = '';        if(function_exists("file_get_contents"))        {            $src = file_get_contents($this->mask_img);        }        else        {            $handle = fopen ($this->mask_img, "r");            while (!feof ($handle))            {                $src .= fgets($fd, 4096);            }            fclose ($handle);        }        if(empty($this->mask_img))        {            die("水印图片为空");        }        $this->h_mask = ImageCreateFromString($src);        $this->mask_w = $this->getImgWidth($this->h_mask);        $this->mask_h = $this->getImgHeight($this->h_mask);    }    function _output()    {        $img_type  = $this->img_type;        $func_name = $this->all_type[$img_type]['output'];        if(function_exists($func_name))        {            // 判断浏览器,若是IE就不发送头            if(isset($_SERVER['HTTP_USER_AGENT']))            {                $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);                if(!preg_match('/^.*MSIE.*\)$/i',$ua))                {                    header("Content-type:$img_type");                }            }            $func_name($this->h_dst, $this->dst_img, $this->img_display_quality);        }        else        {            Return false;        }    }    function _parseColor($color)    {        $arr = array();        for($ii=1; $ii<strlen hexdec return function _countmaskpos if>_isFull())        {            switch($this->mask_position)            {                case 1:                    $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;                    $this->mask_pos_y = $this->mask_offset_y + $this->img_border_sizebreak;                case 2:                    $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;                    $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_ybreak;                case 3:                    $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;                    $this->mask_pos_y = $this->mask_offset_y + $this->img_border_sizebreak;                case 4:                    $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;                    $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_ybreak;                default:// 默认将水印放到右下,偏移指定像素                    $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;                    $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_ybreak;            }        }        else        {            switch($this->mask_position)            {                case 1:// 左上                    $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;                    $this->mask_pos_y = $this->mask_offset_y + $this->img_border_sizebreak;                case 2:// 左下                    $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;                    $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_sizebreak;                case 3:// 右上                    $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;                    $this->mask_pos_y = $this->mask_offset_y + $this->img_border_sizebreak;                case 4:// 右下                    $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;                    $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_sizebreak;                default:// 默认将水印放到右下,偏移指定像素                    $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;                    $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_sizebreak;            }        }    }    function _setFontInfo()    {        if(is_numeric($this->font))        {            $this->font_w  = imagefontwidth($this->font);            $this->font_h  = imagefontheight($this->font);// 计算水印字体所占宽高            $word_length   = strlen($this->mask_word);            $this->mask_w  = $this->font_w*$word_length;            $this->mask_h  = $this->font_h;        }        else        {            $arr = imagettfbbox ($this->font_size,0, $this->font,$this->mask_word);            $this->mask_w  = abs($arr[0] - $arr[2]);            $this->mask_h  = abs($arr[7] - $arr[1]);        }    }    //新图片大小    function _setNewImgSize($img_w, $img_h=null)    {        $num = func_num_args();        if(1 == $num)        {            $this->img_scale = $img_w;// 宽度作为比例            $this->fill_w = round($this->src_w * $this->img_scale / 100) - $this->img_border_size*2;            $this->fill_h = round($this->src_h * $this->img_scale / 100) - $this->img_border_size*2;// 源文件起始坐标            $this->src_x  = 0;            $this->src_y  = 0;            $this->copy_w = $this->src_w;            $this->copy_h = $this->src_h;// 目标尺寸            $this->dst_w   = $this->fill_w + $this->img_border_size*2;            $this->dst_h   = $this->fill_h + $this->img_border_size*2;        }        if(2 == $num)        {            $fill_w   = (int)$img_w - $this->img_border_size*2;            $fill_h   = (int)$img_h - $this->img_border_size*2;            if($fill_w src_w/$fill_w;            $rate_h = $this->src_h/$fill_h;            switch($this->cut_type)            {                case 0:// 如果原图大于缩略图，产生缩小，否则不缩小                    if($rate_w fill_w = (int)$this->src_w;                        $this->fill_h = (int)$this->src_h;                    }                    else                    {                        if($rate_w >= $rate_h)                        {                            $this->fill_w = (int)$fill_w;                            $this->fill_h = round($this->src_h/$rate_w);                        }                        else                        {                            $this->fill_w = round($this->src_w/$rate_h);                            $this->fill_h = (int)$fill_h;                        }                    }                    $this->src_x  = 0;                    $this->src_y  = 0;                    $this->copy_w = $this->src_w;                    $this->copy_h = $this->src_h;// 目标尺寸                    $this->dst_w  = $this->fill_w + $this->img_border_size*2;                    $this->dst_h   = $this->fill_h + $this->img_border_size*2;                    break;// 自动裁切                case 1:// 如果图片是缩小剪切才进行操作                    if($rate_w >= 1 && $rate_h >=1)                    {                        if($this->src_w > $this->src_h)                        {                            $src_x = round($this->src_w-$this->src_h)/2;                            $this->setSrcCutPosition($src_x, 0);                            $this->setRectangleCut($fill_h, $fill_h);                            $this->copy_w = $this->src_h;                            $this->copy_h = $this->src_h;                                                    }                        elseif($this->src_w src_h)                        {                            $src_y = round($this->src_h-$this->src_w)/2;                            $this->setSrcCutPosition(0, $src_y);                            $this->setRectangleCut($fill_w, $fill_h);                            $this->copy_w = $this->src_w;                            $this->copy_h = $this->src_w;                        }                        else                        {                            $this->setSrcCutPosition(0, 0);                            $this->copy_w = $this->src_w;                            $this->copy_h = $this->src_w;                            $this->setRectangleCut($fill_w, $fill_h);                        }                    }                    else                    {                        $this->setSrcCutPosition(0, 0);                        $this->setRectangleCut($this->src_w, $this->src_h);                        $this->copy_w = $this->src_w;                        $this->copy_h = $this->src_h;                    }	// 目标尺寸                    $this->dst_w   = $this->fill_w + $this->img_border_size*2;                    $this->dst_h   = $this->fill_h + $this->img_border_size*2;                                        break;	// 手工裁切                case 2:$this->copy_w = $this->fill_w;                	$this->copy_h = $this->fill_h;		// 目标尺寸                    $this->dst_w   = $this->fill_w + $this->img_border_size*2;                    $this->dst_h   = $this->fill_h + $this->img_border_size*2;                                                       break;                default:                    break;            }        }// 目标文件起始坐标        $this->start_x = $this->img_border_size;        $this->start_y = $this->img_border_size;    }     /**     * 检查水印图是否大于生成后的图片宽高     */    function _isFull()    {        Return (   $this->mask_w + $this->mask_offset_x > $this->fill_w                || $this->mask_h + $this->mask_offset_y > $this->fill_h)                   ?true:false;    }    function _checkMaskValid()    {        if(    $this->mask_w + $this->mask_offset_x > $this->src_w            || $this->mask_h + $this->mask_offset_y > $this->src_h)        {            die("水印图片尺寸大于原图，请缩小水印图");        }    }        /**     * 取得图片类型     */    function _getImgType($file_path)    {        $type_list = array("1"=>"gif","2"=>"jpg","3"=>"png","4"=>"swf","5" => "psd","6"=>"bmp","15"=>"wbmp");        if(file_exists($file_path))        {            $img_info = @getimagesize ($file_path);            if(isset($type_list[$img_info[2]]))            {                Return $type_list[$img_info[2]];            }        }        else        {            die("文件不存在,不能取得文件类型!");        }    }    /**     * 检查图片类型是否合法,调用了array_key_exists函数，此函数要求     * php版本大于4.1.0     *     * @param     */    function _checkValid($img_type)    {        if(!array_key_exists($img_type, $this->all_type))        {            Return false;        }    }        /**     * 按指定路径生成目录     *     * @param     */    function _mkdirs($path)    {        $adir = explode('/',$path);        $dirlist = '';        $rootdir = array_shift($adir);        if(($rootdir!='.'||$rootdir!='..')&&!file_exists($rootdir))        {            @mkdir($rootdir);        }        foreach($adir as $key=>$val)        {            if($val!='.'&&$val!='..')            {                $dirlist .= "/".$val;                $dirpath = $rootdir.$dirlist;                if(!file_exists($dirpath))                {                    @mkdir($dirpath);                    chmod($dirpath,0777);                }            }        }    }    function _flipV($src)    {        $src_x = $this->getImgWidth($src);        $src_y = $this->getImgHeight($src);        $new_im = imagecreatetruecolor($src_x, $src_y);        for ($y = 0; $y h_src = $new_im;    }    function _flipH($src)    {        $src_x = $this->getImgWidth($src);        $src_y = $this->getImgHeight($src);        $new_im = imagecreatetruecolor($src_x, $src_y);        for ($x = 0; $x h_src = $new_im;    }}</strlen>

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??? 测试代码：

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??? test.php

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<?phprequire_once ('images.php');$t = new ThumbHandler();$t->setSrcImg("test.gif");$t->setDstImg("new_test.jpg");$t->setMaskPosition(1);$t->setMaskImgPct(80);$t->setDstImgBorder(4,"#dddddd");// 指定缩放比例$t->createImg(300,200);

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