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標(biāo)題: ImageMagick 實(shí)例 [打印本頁(yè)]
作者: netwenk    時(shí)間: 2011-12-22 08:54
標(biāo)題: ImageMagick 實(shí)例



  1. <?php

  3. function resize($src,$destSrc, $w,$h)
  4.     {
  5.      $temp=pathinfo($src);
  6.         $name=$temp["basename"];
  7.         $dir=$temp["dirname"];
  8.         $savepath = empty($destSrc) ? "{$dir}/{$name}.thumb.jpg" : $destSrc;
  9.         
  10.         
  11.         $image = new Imagick();
  12.         $image->newImage($w, $h, new ImagickPixel('white'));
  13.         $image->setImageFormat('png');
  14.         
  15.         $imagick = new Imagick();
  16.         $imagick->readImage($src);
  17.         $width = $imagick->getImageWidth();
  18.         $height = $imagick->getImageHeight();

  20.         if ($width > $w || $height > $h) {
  21.             $imagick->resizeImage($w, $h, Imagick::FILTER_CATROM, 1, true);
  22.         }
  23.         
  24.         $imagick->setImageFormat('JPEG');
  25.         $imagick->setImageCompression(Imagick::COMPRESSION_JPEG);
  26.         $a = $imagick->getImageCompressionQuality() * 0.75;
  27.         if ($a == 0) {
  28.             $a = 75;
  29.         }
  30.         $imagick->setImageCompressionQuality($a);
  31.         $imagick->stripImage();
  32.         
  33.         $per1 = round($width/$height,2);//計(jì)算原圖長(zhǎng)寬比
  34.         $per2 = round($w/$h,2);//計(jì)算縮略圖長(zhǎng)寬比
  35.         
  36.         if($per1 == $per2){
  37.             $imagick->writeImage($savepath);
  38.         }else{
  39.             if($per1 > $per2){
  40.                 $x=0;
  41.                 $y=($h - $imagick->getImageHeight())/2;//垂直居中
  42.             }elseif($per1 < $per2){        
  43.                 $x=($w - $imagick->getImageWidth())/2;//水平居中
  44.                 $y=0;
  45.             }else{
  46.              $x = $y = 0;
  47.             }
  48.             $image->compositeImage($imagick, $imagick->getImageCompose(), $x, $y);
  49.             $image->writeImage($savepath);
  50.         }
  51.         
  52.         return $savepath;
  53.     }
  54. ?>





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