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resize.image.class.php

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<?php

/**

* @title J51 Thumbs Gallery

* @version 1.1

* @website http://www.joomla51.com

* @license GNU/GPL, see LICENSE.php

Credits: Bit Repository

Source URL: http://www.bitrepository.com/web-programming/php/resizing-an-image.html

------------------------------------------------------------------------------------

class Resize_Image

{

var $image_to_resize;

var $new_width;

var $new_height;

var $save;

function resize()

{

if( !file_exists( $this -> image_to_resize ) )

{

exit( "File " . $this -> image_to_resize . " does not exist." );

}

$info = GetImageSize( $this -> image_to_resize );

if( empty( $info ) )

{

exit( "The file " . $this -> image_to_resize . " doesn't seem to be an image." );

}

$width = $info[ 0 ];

$height = $info[ 1 ];

$mime = $info[ 'mime' ];

$type = substr( strrchr( $mime, '/' ), 1 );

switch( $type )

{

case 'jpeg':

$image_create_func = 'ImageCreateFromJPEG';

$image_save_func = 'ImageJPEG';

$new_image_ext = 'jpg';

break;

case 'png':

$image_create_func = 'ImageCreateFromPNG';

$image_save_func = 'ImagePNG';

$new_image_ext = 'png';

break;

case 'bmp':

$image_create_func = 'ImageCreateFromBMP';

$image_save_func = 'ImageBMP';

$new_image_ext = 'bmp';

break;

case 'gif':

$image_create_func = 'ImageCreateFromGIF';

$image_save_func = 'ImageGIF';

$new_image_ext = 'gif';

break;

case 'vnd.wap.wbmp':

$image_create_func = 'ImageCreateFromWBMP';

$image_save_func = 'ImageWBMP';

$new_image_ext = 'bmp';

break;

case 'xbm':

$image_create_func = 'ImageCreateFromXBM';

$image_save_func = 'ImageXBM';

$new_image_ext = 'xbm';

break;

default: $image_create_func = 'ImageCreateFromJPEG';

$image_save_func = 'ImageJPEG';

$new_image_ext = 'jpg';

}// New Image

$image_c = ImageCreateTrueColor( $this -> new_width, $this -> new_height );

//$image_c = ImageCreateTrueColor( $this -> new_width, $this -> new_height );

// Set a maximum height and width

$new_width = $this -> new_width;

$new_height = $this -> new_height;

//$ratio_orig = $width/$height;

//if ($new_width/$new_height > $ratio_orig) {

// $new_width = (int)$new_height*$ratio_orig;

//} else {

// $new_height = $new_width/$ratio_orig;

//}

// resize

$crop = true;

if($crop){

//if($width < $new_width or $height < $new_height) return "Picture is too small!";

$ratio = max($new_width/$width, $new_height/$height);

$height = $new_height / $ratio;

$x = ($width - $new_width / $ratio) / 2;

$width = $new_width / $ratio;

}

else{

//if($width < $new_width and $height < $new_height) return "Picture is too small!";

$ratio = min($new_width/$width, $new_height/$height);

$new_width = $width * $ratio;

$new_height = $height * $ratio;

$x = 0;

}

$image_c = ImageCreateTrueColor( $new_width, $new_height );

if ($type=='png') {

imagealphablending($image_c, false);

imagesavealpha($image_c, true);

}

$new_image = $image_create_func( $this -> image_to_resize );

if ($type=='png') {

imagealphablending($new_image, true);

}

ImageCopyResampled( $image_c, $new_image, 0, 0, 0, 0, $this -> new_width, $this -> new_height, $width, $height );

//ImageCopyResampled( $image_c, $new_image, 0, 0, 0, 0, $this -> new_width, $this -> new_height, $width, $height );

//ImageCopyResampled( $image_c, $new_image, 0, 0, 0, 0, $new_width, $new_height, $width, $height );

ImageCopyResampled( $image_c, $new_image, 0, 0, $x, 0, $new_width, $new_height, $width, $height );

$process = $image_save_func( $image_c, $this->save );

// Free up the memory.

imagedestroy($image);

imagedestroy($newImage);

return array( 'result' => $process, 'new_file_path' => $this->save );

}

Diferencias guardadas

Texto original

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Credits: Bit Repository

Source URL: http://www.bitrepository.com/web-programming/php/resizing-an-image.html
------------------------------------------------------------------------------------
*/
class Resize_Image
{
	var $image_to_resize;
	var $new_width;
	var $new_height;
	var $save;

Texto modificado

Abrir archivo

Credits: Bit Repository

// resize
      $crop = true;
      if($crop){
         //if($width < $new_width or $height < $new_height) return "Picture is too small!";
         $ratio = max($new_width/$width, $new_height/$height);
         $height = $new_height / $ratio;
         $x = ($width - $new_width / $ratio) / 2;
         $width = $new_width / $ratio;
      }
      else{
         //if($width < $new_width and $height < $new_height) return "Picture is too small!";
         $ratio = min($new_width/$width, $new_height/$height);
         $new_width = $width * $ratio;
         $new_height = $height * $ratio;
         $x = 0;
      }

$image_c = ImageCreateTrueColor( $new_width, $new_height );
		
		if ($type=='png') {
			imagealphablending($image_c, false);
			imagesavealpha($image_c, true);
		}
		$new_image = $image_create_func( $this -> image_to_resize );
		if ($type=='png') {
			imagealphablending($new_image, true);
		}
		//ImageCopyResampled( $image_c, $new_image, 0, 0, 0, 0, $this -> new_width, $this -> new_height, $width, $height );
		//ImageCopyResampled( $image_c, $new_image, 0, 0, 0, 0, $new_width, $new_height, $width, $height );
		ImageCopyResampled( $image_c, $new_image, 0, 0, $x, 0, $new_width, $new_height, $width, $height );
		
		$process = $image_save_func( $image_c, $this->save );

// Free up the memory.
      imagedestroy($image);
      imagedestroy($newImage);
		return array( 'result' => $process, 'new_file_path' => $this->save );
	}
}
?>