脚本宝典收集整理的这篇文章主要介绍了摘自织梦CMS中的图片处理类，脚本宝典觉得挺不错的，现在分享给大家，也给大家做个参考。

本文实例讲述了摘自织梦CMS中的图片处理类。分享给大家供大家参考。具体如下：

PHP;">
__construct($targetfile,$attach);
 }
 // 析构函数
 function __construct($targetfile,$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') ? 'imagecreatefromjpeg' : '';
    $this->imagefunc = function_exists('imagejpeg') ? 'imagejpeg' : '';
    break;
   case 'image/gif':
    $this->imagecreatefromfunc = function_exists('imagecreatefromgif') ? 'imagecreatefromgif' : '';
    $this->imagefunc = function_exists('imagegif') ? 'imagegif' : '';
    break;
   case 'image/png':
    $this->imagecreatefromfunc = function_exists('imagecreatefrompng') ? 'imagecreatefrompng' : '';
    $this->imagefunc = function_exists('imagepng') ? 'imagepng' : '';
    break;
  }//为空则匹配类型的函数不存在
  $this->attach['size'] = empty($this->attach['size']) ? @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 ? 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,$preview);
if($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 &amp;& $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($thumbwidth,$preview = 0)

{

if($this->thumbstatus && function_exists('imagecreatetruecolor') && function_exists('imagecopyresampled') && function_exists('imagejpeg'))

{

$imagecreatefromfunc = $this->imagecreatefromfunc;

$imagefunc = $this->thumbstatus == 1 ? '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 ? ($this->thumbstatus == 1 ? $this->targetfile.'.thumb.jpg' : $this->targetfile) : './watermark_tmp.jpg';

$thumb_photo = imagecreatetruecolor($thumb['width'],$thumb['height']);

imagecopyresampled($thumb_photo,$attach_photo,$thumb['width'],$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 ? 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 ? DEDEDATA.'/mark/mark.png' : DEDEDATA.'/mark/mark.gif';

$watermarkinfo = @getimagesize($watermarkfile);

$watermarklogo = $this->watermarktype == 1 ? @imagecreatefrompng($watermark_file) : @imagecreatefromgif($watermarkfile);

if(!$watermarklogo)

{

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,$imageheight);

if($this->watermarktype == 1)

{

imagecopy($dstphoto,$watermarklogo,$x,$y,$logowidth,$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'],$x + $ax + $this->watermarktext['shadowx'],$y + $ay + $this->watermarktext['shadowy'],$shadowcolor,$this->watermarktext['text']);

}

$colorrgb = explode(',$this->watermarktext['color']);

$color = imagecolorallocate($dst_photo,$colorrgb[0],$colorrgb[1],$colorrgb[2]);

imagettftext($dstphoto,$x + $ax,$y + $ay,$color,$this->watermarktext['text']);

}

else

{

imagealphablending($watermarklogo,true);

imagecopymerge($dst_photo,$logoheight,$this->watermarktrans);

}

$targetfile = !$preview ? $this->targetfile : './watermark_tmp.jpg';

if($this->attachinfo['mime'] == 'image/jpeg')

{

$imagefunc($dst_photo,$this->watermarkquality);

}

else

{

$imagefunc($dst_photo,$targetfile);

}

$this->attach['size'] = filesize($this->targetfile);

}

}

}

}//End Class

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