Excerpted from the image processing class in Dreamweaver CMS, excerpted from Dreamweaver CMS picture_PHP tutorial

Excerpted from the image processing class in Dreamweaver CMS, excerpted from Dreamweaver cms picture

This article describes the image processing class extracted from Dreamweaver CMS. Share it with everyone for your reference. The details are as follows:

<&#63;php if(!defined('DEDEINC')) exit('dedecms');
/**
 * 图像处理类
 *
 * @version  $Id: image.class.php 1 18:10 2010年7月5日Z tianya $
 * @package  DedeCMS.Libraries
 * @copyright  Copyright (c) 2007 - 2010, DesDev, Inc.
 * @license  http://help.dedecms.com/usersguide/license.html
 * @link   http://www.dedecms.com
 */
class image
{
 var $attachinfo;
 var $targetfile; //图片路径
 var $imagecreatefromfunc;
 var $imagefunc;
 var $attach;
 var $animatedgif;
 var $watermarkquality;
 var $watermarktext;
 var $thumbstatus;
 var $watermarkstatus;
 // 析构函数,兼容PHP4
 function image($targetfile, $cfg_thumb, $cfg_watermarktext, $photo_waterpos, $photo_diaphaneity, $photo_wheight, $photo_wwidth, $cfg_watermarktype, $photo_marktrans,$trueMarkimg, $attach = array())
 {
  $this->__construct($targetfile, $cfg_thumb, $cfg_watermarktext, $photo_waterpos, $photo_diaphaneity, $photo_wheight, $photo_wwidth, $cfg_watermarktype, $photo_marktrans,$trueMarkimg, $attach);
 }
 // 析构函数
 function __construct($targetfile, $cfg_thumb, $cfg_watermarktext, $photo_waterpos, $photo_diaphaneity, $photo_wheight, $photo_wwidth, $cfg_watermarktype, $photo_marktrans,$trueMarkimg, $attach = array())
 {
  $this->thumbstatus = $cfg_thumb;
  $this->watermarktext = $cfg_watermarktext;
  $this->watermarkstatus = $photo_waterpos;
  $this->watermarkquality = $photo_marktrans;
  $this->watermarkminwidth = $photo_wwidth;
  $this->watermarkminheight = $photo_wheight;
  $this->watermarktype = $cfg_watermarktype;
  $this->watermarktrans = $photo_diaphaneity;
  $this->animatedgif = 0;
  $this->targetfile = $targetfile;
  $this->attachinfo = @getimagesize($targetfile);
  $this->attach = $attach;
  switch($this->attachinfo['mime'])
  {
   case 'image/jpeg':
    $this->imagecreatefromfunc = function_exists('imagecreatefromjpeg') &#63; 'imagecreatefromjpeg' : '';
    $this->imagefunc = function_exists('imagejpeg') &#63; 'imagejpeg' : '';
    break;
   case 'image/gif':
    $this->imagecreatefromfunc = function_exists('imagecreatefromgif') &#63; 'imagecreatefromgif' : '';
    $this->imagefunc = function_exists('imagegif') &#63; 'imagegif' : '';
    break;
   case 'image/png':
    $this->imagecreatefromfunc = function_exists('imagecreatefrompng') &#63; 'imagecreatefrompng' : '';
    $this->imagefunc = function_exists('imagepng') &#63; 'imagepng' : '';
    break;
  }//为空则匹配类型的函数不存在
  $this->attach['size'] = empty($this->attach['size']) &#63; @filesize($targetfile) : $this->attach['size'];
  if($this->attachinfo['mime'] == 'image/gif')
  {
   $fp = fopen($targetfile, 'rb');
   $targetfilecontent = fread($fp, $this->attach['size']);
   fclose($fp);
   $this->animatedgif = strpos($targetfilecontent, 'NETSCAPE2.0') === false &#63; 0 : 1;
  }
 }
 /**
  * 生成缩略图
  *
  * @access public
  * @param  int $thumbwidth 图片宽度
  * @param  int $thumbheight 图片高度
  * @param  int $preview 是否预览
  * @return void
  */
 function thumb($thumbwidth, $thumbheight, $preview = 0)
 {
  $this->thumb_gd($thumbwidth, $thumbheight, $preview);
 
  if($this->thumbstatus == 2 && $this->watermarkstatus)
  {
   $this->image($this->targetfile, $this->attach);
   $this->attach['size'] = filesize($this->targetfile);
  }
 }
 /**
  * 图片水印
  *
  * @access public
  * @param  int $preview 是否预览
  * @return void
  */
 function watermark($preview = 0)
 {
  if($this->watermarkminwidth && $this->attachinfo[0] <= $this->watermarkminwidth && $this->watermarkminheight && $this->attachinfo[1] <= $this->watermarkminheight)
  {
   return ;
  }
  $this->watermark_gd($preview);
 }
 /**
  * 使用gd生成缩略图
  *
  * @access public
  * @param  int $thumbwidth 图片宽度
  * @param  int $thumbheight 图片高度
  * @param  int $preview 是否预览
  * @return void
  */
 function thumb_gd($thumbwidth, $thumbheight, $preview = 0)
 {
  if($this->thumbstatus && function_exists('imagecreatetruecolor') && function_exists('imagecopyresampled') && function_exists('imagejpeg'))
  {
   $imagecreatefromfunc = $this->imagecreatefromfunc;
   $imagefunc = $this->thumbstatus == 1 &#63; 'imagejpeg' : $this->imagefunc;
   list($imagewidth, $imageheight) = $this->attachinfo;
   if(!$this->animatedgif && ($imagewidth >= $thumbwidth || $imageheight >= $thumbheight))
   {
    $attach_photo = $imagecreatefromfunc($this->targetfile);
    $x_ratio = $thumbwidth / $imagewidth;
    $y_ratio = $thumbheight / $imageheight;
    if(($x_ratio * $imageheight) < $thumbheight)
    {
     $thumb['height'] = ceil($x_ratio * $imageheight);
     $thumb['width'] = $thumbwidth;
    }
    else
    {
     $thumb['width'] = ceil($y_ratio * $imagewidth);
     $thumb['height'] = $thumbheight;
    }
    $targetfile = !$preview &#63; ($this->thumbstatus == 1 &#63; $this->targetfile.'.thumb.jpg' : $this->targetfile) : './watermark_tmp.jpg';
    $thumb_photo = imagecreatetruecolor($thumb['width'], $thumb['height']);
    imagecopyresampled($thumb_photo, $attach_photo, 0, 0, 0, 0, $thumb['width'], $thumb['height'], $imagewidth, $imageheight);
    if($this->attachinfo['mime'] == 'image/jpeg')
    {
     $imagefunc($thumb_photo, $targetfile, 100);
    }
    else
    {
     $imagefunc($thumb_photo, $targetfile);
    }
    $this->attach['thumb'] = $this->thumbstatus == 1 &#63; 1 : 0;
   }
  }
 }
 /**
  * 使用gd进行水印
  *
  * @access public
  * @param  int $preview 是否预览
  * @return void
  */
 function watermark_gd($preview = 0)
 {
  if($this->watermarkstatus && function_exists('imagecopy') && function_exists('imagealphablending') && function_exists('imagecopymerge'))
  {
   $imagecreatefunc = $this->imagecreatefromfunc;
   $imagefunc = $this->imagefunc;
   list($imagewidth, $imageheight) = $this->attachinfo;
   if($this->watermarktype < 2)
   {
    $watermark_file = $this->watermarktype == 1 &#63; DEDEDATA.'/mark/mark.png' : DEDEDATA.'/mark/mark.gif';
    $watermarkinfo = @getimagesize($watermark_file);
    $watermark_logo = $this->watermarktype == 1 &#63; @imagecreatefrompng($watermark_file) : @imagecreatefromgif($watermark_file);
    if(!$watermark_logo)
    {
     return ;
    }
    list($logowidth, $logoheight) = $watermarkinfo;
   }
   else
   {
    $box = @imagettfbbox($this->watermarktext['size'], $this->watermarktext['angle'], $this->watermarktext['fontpath'],$this->watermarktext['text']);
    $logowidth = max($box[2], $box[4]) - min($box[0], $box[6]);
    $logoheight = max($box[1], $box[3]) - min($box[5], $box[7]);
    $ax = min($box[0], $box[6]) * -1;
    $ay = min($box[5], $box[7]) * -1;
   }
   $wmwidth = $imagewidth - $logowidth;
   $wmheight = $imageheight - $logoheight;
   if(($this->watermarktype < 2 && is_readable($watermark_file) || $this->watermarktype == 2) && $wmwidth > 10 && $wmheight > 10 && !$this->animatedgif)
   {
    switch($this->watermarkstatus)
    {
     case 1:
 
      $x = +5;
      $y = +5;
      break;
     case 2:
      $x = ($imagewidth - $logowidth) / 2;
      $y = +5;
      break;
     case 3:
      $x = $imagewidth - $logowidth - 5;
      $y = +5;
      break;
     case 4:
      $x = +5;
      $y = ($imageheight - $logoheight) / 2;
      break;
     case 5:
      $x = ($imagewidth - $logowidth) / 2;
      $y = ($imageheight - $logoheight) / 2;
      break;
     case 6:
      $x = $imagewidth - $logowidth - 5;
      $y = ($imageheight - $logoheight) / 2;
      break;
     case 7:
      $x = +5;
      $y = $imageheight - $logoheight - 5;
      break;
     case 8:
      $x = ($imagewidth - $logowidth) / 2;
      $y = $imageheight - $logoheight - 5;
      break;
     case 9:
      $x = $imagewidth - $logowidth - 5;
      $y = $imageheight - $logoheight -5;
      break;
    }
    $dst_photo = @imagecreatetruecolor($imagewidth, $imageheight);
    $target_photo = $imagecreatefunc($this->targetfile);
    imagecopy($dst_photo, $target_photo, 0, 0, 0, 0, $imagewidth, $imageheight);
    if($this->watermarktype == 1)
    {
     imagecopy($dst_photo, $watermark_logo, $x, $y, 0, 0, $logowidth, $logoheight);
    }
    elseif($this->watermarktype == 2)
    {
     if(($this->watermarktext['shadowx'] || $this->watermarktext['shadowy']) && $this->watermarktext['shadowcolor'])
     {
      $shadowcolorrgb = explode(',', $this->watermarktext['shadowcolor']);
      $shadowcolor = imagecolorallocate($dst_photo, $shadowcolorrgb[0], $shadowcolorrgb[1], $shadowcolorrgb[2]);
      imagettftext($dst_photo, $this->watermarktext['size'], $this->watermarktext['angle'],
      $x + $ax + $this->watermarktext['shadowx'], $y + $ay + $this->watermarktext['shadowy'], $shadowcolor,
      $this->watermarktext['fontpath'], $this->watermarktext['text']);
     }
     $colorrgb = explode(',', $this->watermarktext['color']);
     $color = imagecolorallocate($dst_photo, $colorrgb[0], $colorrgb[1], $colorrgb[2]);
     imagettftext($dst_photo, $this->watermarktext['size'], $this->watermarktext['angle'],
     $x + $ax, $y + $ay, $color, $this->watermarktext['fontpath'], $this->watermarktext['text']);
    }
    else
    {
     imagealphablending($watermark_logo, true);
     imagecopymerge($dst_photo, $watermark_logo, $x, $y, 0, 0, $logowidth, $logoheight, $this->watermarktrans);
    }
    $targetfile = !$preview &#63; $this->targetfile : './watermark_tmp.jpg';
    if($this->attachinfo['mime'] == 'image/jpeg')
    {
     $imagefunc($dst_photo, $targetfile, $this->watermarkquality);
    }
    else
    {
     $imagefunc($dst_photo, $targetfile);
    }
    $this->attach['size'] = filesize($this->targetfile);
   }
  }
 }
}//End Class

I hope this article will be helpful to everyone’s PHP programming design.

http://www.bkjia.com/PHPjc/1044854.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1044854.htmlTechArticleExcerpted from the image processing class in Dreamweaver CMS, extracted from Dreamweaver cms pictures This article describes an example taken from Dreamweaver CMS Image processing class. Share it with everyone for your reference. The details are as follows: php if(!de...