Pdf/Resource/GraphicsState.php

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Zend Framework

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Category
Zend  
Copyright
Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)  
License
New BSD License  
Package
Zend_Pdf  
Version
$Id: Image.php 20096 2010-01-06 02:05:09Z bkarwin $  

\Zend_Pdf_Resource_GraphicsState

Package: Zend\Pdf
Graphics State.

While some parameters in the graphics state can be set with individual operators, as shown in Table 4.7, others cannot. The latter can only be set with the generic graphics state operator gs (PDF 1.2).

Parent(s)
\Zend_Pdf_Resource
Copyright
Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)  
License
New BSD License  

Properties

>VPropertyprotected\Zend_Pdf_ElementFactory_Interface $_objectFactory
inherited
Each Pdf resource (fonts, images, .
Inherited from: \Zend_Pdf_Resource::$$_objectFactory

..) interacts with a PDF itself. It creates appropriate PDF objects, structures and sometime embedded files. Resources are referenced in content streams by names, which are stored in a page resource dictionaries.

Thus, resources must be attached to the PDF.

Resource abstraction uses own PDF object factory to store all necessary information. At the render time internal object factory is appended to the global PDF file factory.

Resource abstraction also cashes information about rendered PDF files and doesn't duplicate resource description each time then Resource is rendered (referenced).

Details
Type
\Zend_Pdf_ElementFactory_Interface
Inherited_from
\Zend_Pdf_Resource::$$_objectFactory  
>VPropertyprotected\Zend_Pdf_Element_Object $_resource
inherited
Main resource object
Inherited from: \Zend_Pdf_Resource::$$_resource

Methods

methodpublic__clone() : void
inherited

Clone page, extract it and dependent objects from the current document, so it can be used within other docs.

Inherited from: \Zend_Pdf_Resource::__clone()
methodpublic__construct(\Zend_Pdf_Element_Object $extGStateObject = null) : void

Object constructor.

If resource is not a Zend_Pdf_Element object, then stream object with specified value is generated.

Parameters
NameTypeDescription
$extGStateObject\Zend_Pdf_Element_Object
Throws
ExceptionDescription
\Zend_Pdf_Exception
methodpublicsetAlpha(float $alpha, string $mode = 'Normal') : \Zend_Pdf_Canvas_Interface

Set the transparancy

$alpha == 0 - transparent $alpha == 1 - opaque

Transparency modes, supported by PDF: Normal (default), Multiply, Screen, Overlay, Darken, Lighten, ColorDodge, ColorBurn, HardLight, SoftLight, Difference, Exclusion

Parameters
NameTypeDescription
$alphafloat
$modestring
Returns
TypeDescription
\Zend_Pdf_Canvas_Interface
Throws
ExceptionDescription
\Zend_Pdf_Exception
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