Img2Thumb Class Reference

Public Member Functions
	__construct ($filename, $newxsize=60, $newysize=60, $fileout='', $thumbMaxSize=0, $bgred=0, $bggreen=0, $bgblue=0)
	check_jpeg ($f, $fix=false)

Public Attributes
	$bg_red
	$bg_green
	$bg_blue
	$maxSize
	$fileout

Private Member Functions
	NewImgCreate ($filename, $newxsize, $newysize, $fileout)
	NewImgResize ($orig_img, $newxsize, $newysize, $filename)
	NewImgSave ($new_img, $fileout, $type)
	NewImgShow ($new_img, $type)
	GetImgType ($filename)

Detailed Description

class Image2Thumbnail Thumbnail creation with PHP4 and GDLib (recommended, but not mandatory: 2.0.1 !)

Author

Andreas Martens heyn@.nosp@m.plau.nosp@m.tdiet.nosp@m.sch..nosp@m.de

Patrick Teague webdu.nosp@m.de@v.nosp@m.eslac.nosp@m.h.co.nosp@m.m

Soeren Eberhardt <soeren|at|virtuemart.net>

Version

1.0b

Date

modified 11/22/2004

• added support for GDLib < 2.0.1
  • added support for reading gif images
  • makes jpg thumbnails
  • changed several groups of 'if' statements to single 'switch' statements
• commented out original code so modification could be identified.

Constructor & Destructor Documentation

Img2Thumb::__construct	(		$filename,
			$newxsize = 60,
			$newysize = 60,
			$fileout = '',
			$thumbMaxSize = 0,
			$bgred = 0,
			$bggreen = 0,
			$bgblue = 0
	)

Constructor - requires following vars:

Parameters

string

$filename

image path

These are additional vars:

Parameters

int	$newxsize	new maximum image width
int	$newysize	new maximum image height
string	$fileout	output image path
int	$thumbMaxSize	whether thumbnail should have background fill to make it exactly $newxsize x $newysize
int	$bgred	0-255 - red color variable for background filler
int	$bggreen	0-255 - green color variable for background filler
int	$bgblue	0-255 - blue color variable for background filler

Member Function Documentation

Img2Thumb::check_jpeg	(		$f,
			$fix = false
	)

check for jpeg file header and footer - also try to fix it

Author

willertan1980 at yahoo dot com http://www.php.net/manual/de/function.imagecreatefromjpeg.php

Parameters

	$f
bool	$fix

Returns

bool

Img2Thumb::GetImgType (   $filename )

private

private function - do not call

1 = GIF, 2 = JPG, 3 = PNG, 4 = SWF, 5 = PSD, 6 = BMP, 7 = TIFF(intel byte order), 8 = TIFF(motorola byte order), 9 = JPC, 10 = JP2, 11 = JPX, 12 = JB2, 13 = SWC, 14 = IFF

Img2Thumb::NewImgCreate (   $filename,   $newxsize,   $newysize,   $fileout  )

private

private function - do not call

Img2Thumb::NewImgResize (   $orig_img,   $newxsize,   $newysize,   $filename  )

private

/** Maybe adding sharpening with $sharpenMatrix = array ( array(-1.2, -1, -1.2), array(-1, 20, -1), array(-1.2, -1, -1.2) );

calculate the sharpen divisor $divisor = array_sum(array_map('array_sum', $sharpenMatrix));

$offset = 0;

apply the matrix imageconvolution($img, $sharpenMatrix, $divisor, $offset);

private function - do not call includes function ImageCreateTrueColor and ImageCopyResampled which are available only under GD 2.0.1 or higher !

Img2Thumb::NewImgSave (   $new_img,   $fileout,   $type  )

private

private function - do not call

Img2Thumb::NewImgShow (   $new_img,   $type  )

private

private function - do not call

Member Data Documentation

Img2Thumb::$bg_blue

Img2Thumb::$bg_green

Img2Thumb::$bg_red

Img2Thumb::$fileout

Img2Thumb::$maxSize

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The documentation for this class was generated from the following file:

• administrator/components/com_virtuemart/helpers/img2thumb.php