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*Author: Dreaming Scorpio (beluckly)
*Completion time: 2006-12-18
*Class name: CreatMiniature
*Function: Generate multiple types of thumbnails
*Basic parameters: $srcFile, $echoType
*Parameters used in the method:
$toFile, the generated file
$toW, the generated width
$toH, the generated height
$bk1, the background color parameter is 255 as the highest
$bk2, the background color parameter
$bk3, background color parameter
* Example:
< ?php /*************************************** * Author: Dreaming Scorpio ( beluckly) *Completion time: 2006-12-18 *Class name: CreatMiniature *Function: Generate multiple types of thumbnails *Basic parameters: $srcFile, $echoType * Parameters used in the method: $toFile, generated file $toW, generated width $toH, the generated height $bk1, the background color parameter is 255 as the highest $bk2, the background color parameter $bk3, the background color parameter *Example: include("thumb.php"); $cm=new CreatMiniature(); $cm->SetVar("1.jpg","file");
$cm->Distortion("dis_bei.jpg",150,200);
$cm->Prorate("pro_bei.jpg",150,200);
$cm->Cut("cut_bei.jpg",150,200);
$cm->BackFill ("fill_bei.jpg",150,200);
****************************** *********** /
class CreatMiniature
{
//Public variables
var $srcFile=""; //Original image
var $echoType; //Output image type, link--not saved as a file; file--saved as a file
var $im=""; //Temporary variable
var $srcW=""; //Original image width
var $srcH=""; //Original image height
//Set variables and initialize
function SetVar($srcFile,$echoType)
{
$this->srcFile=$srcFile;
$this->echoType =$echoType;
$info = "";
$data = GetImageSize($this->srcFile,$info);
switch ($data[2])
{
case 1:
if(!function_exists("imagecreatefromgif")){
echo "you The GD library cannot use images in GIF format, please use Jpeg or PNG format! Return";
exit( );
}
$this->im = ImageCreateFromGIF($this->srcFile);
break;
case 2:
if(!function_exists("imagecreatefromjpeg")){
echo "Your GD library cannot use images in jpeg format, please use images in other formats!" return";
exit();
}
$this ->im = ImageCreateFromJpeg($this->srcFile);
break;
case 3:
$this->im = ImageCreateFromPNG($this- >srcFile);
break;
}
$this->srcW=ImageSX($this->im);
$ this->srcH=ImageSY($this->im);
}
//Generate a distorted thumbnail
function Distortion ($toFile,$toW,$toH)
{
$cImg=$this->CreatImage($this->im,$toW,$toH,0,0, 0,0,$this->srcW,$this->srcH);
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg );
}
//Generate scaled thumbnails
function Prorate($toFile,$toW,$toH)
{
$toWH=$toW/$toH;
$srcWH=$this->srcW/$this->srcH;
if ($toWH< =$srcWH) { $ftoW=$toW; $ftoH=$ftoW*($this->srcH/$this- >srcW);
}
else
{
$ftoH=$toH;
$ftoW=$ftoH* ($this->srcW/$this->srcH);
}
if($this->srcW>$toW||$this->srcH>$ toH)
{
$cImg=$this->CreatImage($this->im,$ftoW,$ftoH,0,0,0,0,$this-> ;srcW,$this->srcH);
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg);
}
else
{
$cImg=$this->CreatImage($this->im,$this->srcW,$this-> srcH,0,0,0,0,$this->srcW,$this->srcH);
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg);
}
}
//Generate a minimally cropped thumbnail
function Cut($toFile,$toW,$toH)
{
$toWH=$toW/$toH;
$srcWH=$this->srcW/$ this->srcH;
if($toWH< =$srcWH) { $ctoH=$toH; $ctoW=$ctoH*($this->srcW/$this->srcH);
}
else
{
$ctoW=$toW;
$ctoH=$ctoW*($this->srcH/$this->srcW);
}
$allImg=$this->CreatImage($this->im,$ctoW,$ctoH,0,0,0,0,$this->srcW,$this->srcH);
$cImg=$this->CreatImage($allImg,$toW,$toH,0,0,($ctoW-$toW)/2,($ctoH-$toH)/2,$toW,$toH);
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg);
ImageDestroy($allImg);
}
//生成背景填充的缩图
function BackFill($toFile,$toW,$toH,$bk1=255,$bk2=255,$bk3=255)
{
$toWH=$toW/$toH;
$srcWH=$this->srcW/$this->srcH;
if($toWH< =$srcWH) { $ftoW=$toW; $ftoH=$ftoW*($this->srcH/$this->srcW);
}
else
{
$ftoH=$toH;
$ftoW=$ftoH*($this->srcW/$this->srcH);
}
if(function_exists("imagecreatetruecolor"))
{
@$cImg=ImageCreateTrueColor($toW,$toH);
if(!$cImg)
{
$cImg=ImageCreate($toW,$toH);
}
}
else
{
$cImg=ImageCreate($toW,$toH);
}
$backcolor = imagecolorallocate($cImg, $bk1, $bk2, $bk3); //填充的背景颜色
ImageFilledRectangle($cImg,0,0,$toW,$toH,$backcolor);
if($this->srcW>$toW||$this->srcH>$toH)
{
$proImg=$this->CreatImage($this->im,$ftoW,$ftoH,0,0,0,0,$this->srcW,$this->srcH);
/*
if($ftoW< $toW) { ImageCopyMerge($cImg,$proImg,($toW-$ftoW)/2,0,0,0,$ftoW,$ftoH,100); } else if($ftoH<$toH) { ImageCopyMerge($cImg,$proImg,0,($toH-$ftoH)/2,0,0,$ftoW,$ftoH,100); } */ if($ftoW<$toW) { ImageCopy($cImg,$proImg,($toW-$ftoW)/2,0,0,0,$ftoW,$ftoH); } else if($ftoH<$toH) { ImageCopy($cImg,$proImg,0,($toH-$ftoH)/2,0,0,$ftoW,$ftoH); } else { ImageCopy($cImg,$proImg,0,0,0,0,$ftoW,$ftoH); } } else { ImageCopyMerge($cImg,$this->im,($toW-$ftoW)/2,($toH-$ftoH)/2,0,0,$ftoW,$ftoH,100);
}
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg);
}
function CreatImage($img,$creatW,$creatH,$dstX,$dstY,$srcX,$srcY,$srcImgW,$srcImgH)
{
if(function_exists("imagecreatetruecolor"))
{
@$creatImg = ImageCreateTrueColor($creatW,$creatH);
if($creatImg)
ImageCopyResampled($creatImg,$img,$dstX,$dstY,$srcX,$srcY,$creatW,$creatH,$srcImgW,$srcImgH);
else
{
$creatImg=ImageCreate($creatW,$creatH);
ImageCopyResized($creatImg,$img,$dstX,$dstY,$srcX,$srcY,$creatW,$creatH,$srcImgW,$srcImgH);
}
}
else
{
$creatImg=ImageCreate($creatW,$creatH);
ImageCopyResized($creatImg,$img,$dstX,$dstY,$srcX,$srcY,$creatW,$creatH,$srcImgW,$srcImgH);
}
return $creatImg;
}
//输出图片，link---只输出，不保存文件。file--保存为文件
function EchoImage($img,$to_File)
{
switch($this->echoType)
{
case "link":
if(function_exists('imagejpeg')) return ImageJpeg($img);
else return ImagePNG($img);
break;
case "file":
if(function_exists('imagejpeg')) return ImageJpeg($img,$to_File);
else return ImagePNG($img,$to_File);
break;
}
}
}
?>
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