Pdf/Resource/Image/Png.php

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- \Zend_Pdf_Resource_Image_Png

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Zend Framework

LICENSE This source file is subject to the new BSD license that is bundled with this package in the file LICENSE.txt. It is also available through the world-wide-web at this URL: http://framework.zend.com/license/new-bsd If you did not receive a copy of the license and are unable to obtain it through the world-wide-web, please send an email to license@zend.com so we can send you a copy immediately.

Category: Zend
Copyright: Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
License: New BSD License
Package: Zend_Pdf
Version: $Id$

\Zend_Pdf_Resource_Image_Png
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Package: Zend_Pdf

PNG image

Parent(s): \Zend_Pdf_Resource_Image < \Zend_Pdf_Resource
Copyright: Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
License: New BSD License

Constants

 
                PNG_COMPRESSION_DEFAULT_STRATEGY
                = 0

 
                PNG_COMPRESSION_FILTERED
                = 1

 
                PNG_COMPRESSION_HUFFMAN_ONLY
                = 2

 
                PNG_COMPRESSION_RLE
                = 3

 
                PNG_FILTER_NONE
                = 0

 
                PNG_FILTER_SUB
                = 1

 
                PNG_FILTER_UP
                = 2

 
                PNG_FILTER_AVERAGE
                = 3

 
                PNG_FILTER_PAETH
                = 4

 
                PNG_INTERLACING_DISABLED
                = 0

 
                PNG_INTERLACING_ENABLED
                = 1

 
                PNG_CHANNEL_GRAY
                = 0

 
                PNG_CHANNEL_RGB
                = 2

 
                PNG_CHANNEL_INDEXED
                = 3

 
                PNG_CHANNEL_GRAY_ALPHA
                = 4

 
                PNG_CHANNEL_RGB_ALPHA
                = 6

Properties

$_height

Details

Type: n/a

$_imageProperties

Details

Type: n/a

$_width

Details

Type: n/a

Methods

__construct(string $imageFileName) : void

Object constructor

Parameters

Name	Type	Description
$imageFileName	string

Throws

Exception	Description
\Zend_Pdf_Exception

Details

Todo: Add compression conversions to support compression strategys other than PNG_COMPRESSION_DEFAULT_STRATEGY.
Todo: Add pre-compression filtering.
Todo: Add interlaced image handling.
Todo: Add support for 16-bit images. Requires PDF version bump to 1.5 at least.
Todo: Add processing for all PNG chunks defined in the spec. gAMA etc.
Todo: Fix tRNS chunk support for Indexed Images to a SMask.

getPixelHeight() : void

Image height

getPixelWidth() : void

Image width

getProperties() : void

Image properties

Pdf/Resource/Image/Png.php

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Constants

Properties

Methods

\Zend_Pdf_Resource_Image_Png
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