Index

  1. \SetaPDF
    1. Stamper
    2. Stamper
      1. Stamp
      2. Stamp
        1. Image
        2. Pdf
        3. RichText
        4. Text
        5. XObject

SetaPDF_Stamper_Stamp_XObject The XObject stamp class

File: /SetaPDF v2/Stamper/Stamp/XObject.php

This stamp class is able to use a SetaPDF_Core_XObject instance as its stamp appearance. XObjects could be images or so called form XObjects.

A form XObject is a PDF content stream that is a self-contained description of any sequence of graphics objects (including path objects, text objects and sampled images).

This stamp class allows you to stamp separately form XObjects or image XObjects. A form XObject could include for example drawing operations:

// Create a form XObject with the dimensions of 100 x 100
$xObject = SetaPDF_Core_XObject_Form::create($document, array(0, 0, 100, 100));
$canvas = $xObject->getCanvas();
$canvas->path()->setLineWidth(1);
$canvas->draw()
    ->rect(0, 0, 100, 100) // Draw a rectangle into the form XObject
    ->circle(50, 50, 50); // Draw a circle into the form XObject

$stamp = new SetaPDF_Stamper_Stamp_XObject($xObject);

Class hierarchy

Summary

Methods

Properties

Constants

Constants

VISIBILITY_ALL

public const string SetaPDF_Stamper_Stamp::VISIBILITY_ALL = 'all'

Visibility constant

VISIBILITY_PRINT

public const string SetaPDF_Stamper_Stamp::VISIBILITY_PRINT = 'print'

Visibility constant

VISIBILITY_VIEW

public const string SetaPDF_Stamper_Stamp::VISIBILITY_VIEW = 'view'

Visibility constant


Properties

$_action

protected SetaPDF_Core_Document_Action SetaPDF_Stamper_Stamp::$_action

The currently attached action object

$_blendMode

protected string SetaPDF_Stamper_Stamp::$_blendMode = 'Normal'

The blend mode

$_cacheCounter

protected integer SetaPDF_Stamper_Stamp::$_cacheCounter = 0

An internal used id for forcing a recreation if a property was changed

$_dataCache

protected array SetaPDF_Stamper_Stamp::$_dataCache

The cache data for the stamp

See

$_height

protected float|integer SetaPDF_Stamper_Stamp_XObject::$_height

The individual height of the image

$_opacity

protected float SetaPDF_Stamper_Stamp::$_opacity = 1.0

The opacity

$_opacityGs

protected array SetaPDF_Stamper_Stamp::$_opacityGs = array()

Graphic state objects for handling transparency

Array of SetaPDF_Core_Resource_ExtGState objects

$_optionalContentGroup

protected SetaPDF_Core_Document_OptionalContent_Group SetaPDF_Stamper_Stamp::$_optionalContentGroup

An optional content groups that should be used for the stamp

$_visibility

protected string SetaPDF_Stamper_Stamp::$_visibility = 'all'

The visibility property

$_width

protected float|integer SetaPDF_Stamper_Stamp_XObject::$_width

The individual width of the image

$_xObject

protected SetaPDF_Core_XObject SetaPDF_Stamper_Stamp_XObject::$_xObject

The XObject instance


Methods

__construct()

public SetaPDF_Stamper_Stamp_XObject::__construct ()

The constructor.

Parameters
$xObject : SetaPDF_Core_XObject

The xobject instance

_cacheStampData()

protected SetaPDF_Stamper_Stamp::_cacheStampData (
string $cacheKey, string $stream, array $quadPoints
): void

Caches a content stream part.

Parameters
$cacheKey : string
 
$stream : string
 
$quadPoints : array
 

_ensureResources()

protected SetaPDF_Stamper_Stamp_XObject::_ensureResources (): array

Ensures that all stamp resources are added to the page.

This is needed to reuse a cached stamp stream.

Parameters
$document : SetaPDF_Core_Document
 
$page : SetaPDF_Core_Document_Page
 
Return Values

An array of resource names

See

_getOpacityGraphicState()

protected SetaPDF_Stamper_Stamp::_getOpacityGraphicState (
SetaPDF_Core_Document $document, float $opacity
): SetaPDF_Core_Resource_ExtGState

Get and caches opacity graphic states.

Parameters
$document : SetaPDF_Core_Document
 
$opacity : float
 

_getVisibilityGroup()

protected SetaPDF_Stamper_Stamp::_getVisibilityGroup (): false|SetaPDF_Core_Document_OptionalContent_Group

Get and adds the visibility group of this stamp to a document.

Parameters
$document : SetaPDF_Core_Document
 

_postStamp()

protected SetaPDF_Stamper_Stamp::_postStamp (
SetaPDF_Core_Document $document, SetaPDF_Core_Document_Page $page, array $stampData
): array|null

Method which is called after the main stamp method is executed.

Parameters
$document : SetaPDF_Core_Document
 
$page : SetaPDF_Core_Document_Page
 
$stampData : array
 

_preStamp()

protected SetaPDF_Stamper_Stamp::_preStamp (
SetaPDF_Core_Document $document, SetaPDF_Core_Document_Page $page, array $stampData
): void

Method which is called before the main stamp method is executed.

Parameters
$document : SetaPDF_Core_Document
 
$page : SetaPDF_Core_Document_Page
 
$stampData : array
 

_putAction()

protected SetaPDF_Stamper_Stamp::_putAction (
SetaPDF_Core_Document $document, SetaPDF_Core_Document_Page $page, array $stampData, number $xy1, number $xy2, number $xy3, number $xy4
): void

Put the action via an link annotation above the stamp object.

Parameters
$document : SetaPDF_Core_Document
 
$page : SetaPDF_Core_Document_Page
 
$stampData : array
 
$xy1 : number
 
$xy2 : number
 
$xy3 : number
 
$xy4 : number
 

_stamp()

protected SetaPDF_Stamper_Stamp_XObject::_stamp (
SetaPDF_Core_Document $document, SetaPDF_Core_Document_Page $page, array $stampData
): bool

Writes the xobject draw operators of this stamp onto the canvas.

Parameters
$document : SetaPDF_Core_Document
 
$page : SetaPDF_Core_Document_Page
 
$stampData : array
 

_stampByCache()

protected SetaPDF_Stamper_Stamp::_stampByCache (
SetaPDF_Core_Document $document, SetaPDF_Core_Document_Page $page, array $stampData
): true|string

Try to stamp with the page with a cached content stream part.

Parameters
$document : SetaPDF_Core_Document
 
$page : SetaPDF_Core_Document_Page
 
$stampData : array
 
Return Values

True if the stamp was written by a cache object, a cache key if it was not found

Exceptions

Throws SetaPDF_Stamper_Exception

cleanUp()

public SetaPDF_Stamper_Stamp_XObject::cleanUp (
void
): void

Release resources / cycled references.

getAction()

public SetaPDF_Stamper_Stamp::getAction (
void
): null|SetaPDF_Core_Document_Action

Get the current attached action.

getDimensions()

public SetaPDF_Stamper_Stamp::getDimensions (
void
): array

Get the stamp dimension.

getHeight()

public SetaPDF_Stamper_Stamp_XObject::getHeight (
void
): float|integer

Get the height of the XObject stamp.

If no individual height is given the height will be received from the XObject object by forwarding an individual width (if available) to keep the aspect ratio.

getOpacity()

public SetaPDF_Stamper_Stamp::getOpacity (
void
): number

Get the opacity.

getOpacityBlendMode()

public SetaPDF_Stamper_Stamp::getOpacityBlendMode (
void
): string

Get the blend mode.

See
  • PDF 32000-1:2008 - 11.3.5, "Blend Mode"

getOptionalContentGroup()

public SetaPDF_Stamper_Stamp::getOptionalContentGroup (
void
): SetaPDF_Core_Document_OptionalContent_Group

Get the optional content group for this stamp.

getOriginX()

public SetaPDF_Stamper_Stamp::getOriginX (
SetaPDF_Core_Document_Page $page, string $position
): float|int

Get the x-origin in view to the position of the stamp object.

Parameters
$page : SetaPDF_Core_Document_Page

The page instance

$position : string

Position constant SetaPDF_Stamper::POSITION_XXX

getOriginY()

public SetaPDF_Stamper_Stamp::getOriginY (
SetaPDF_Core_Document_Page $page, string $position
): float|int

Get the y-origin in view to the position of the stamp object.

Parameters
$page : SetaPDF_Core_Document_Page

The page instance

$position : string

Position constant SetaPDF_Stamper::POSITION_XXX

getVisibility()

public SetaPDF_Stamper_Stamp::getVisibility (
void
): null|string

Get the visibility of the stamp object.

getWidth()

public SetaPDF_Stamper_Stamp_XObject::getWidth (
void
): float|integer

Get the width of the XObject stamp.

If no individual width is given the width will be received from the XObject object by forwarding an individual height (if available) to keep the aspect ratio.

getXObject()

public SetaPDF_Stamper_Stamp_XObject::getXObject (
void
): SetaPDF_Core_XObject

Get the XObject instance.

setAction()

public SetaPDF_Stamper_Stamp::setAction (): void

Add an action object to the stamp object.

Parameters
$action : SetaPDF_Core_Document_Action

The action object

setDimensions()

public SetaPDF_Stamper_Stamp_XObject::setDimensions (
float|integer $width, float|integer $height
): void

Set the dimensions of this stamp.

Parameters
$width : float|integer

The new width

$height : float|integer

The new height

setHeight()

public SetaPDF_Stamper_Stamp_XObject::setHeight (
float|integer $height
): void

Set the individual height if the XObject stamp.

Parameters
$height : float|integer

The new height

setLink()

public SetaPDF_Stamper_Stamp::setLink (
string $uri
): void

Set a link onto the stamp.

Parameters
$uri : string

The link

See

setOpacity()

public SetaPDF_Stamper_Stamp::setOpacity (
float $alpha [, string $blendMode = 'Normal' ]
): void

Set the opacity and blend mode of the stamp object.

Parameters
$alpha : float

A value between 0 and 1, whereas 1 is defined as 100% opacity

$blendMode : string

A blend mode defined in PDF 32000-1:2008 - 11.3.5, "Blend Mode"

Exceptions

Throws InvalidArgumentException

setOptionalContentGroup()

public SetaPDF_Stamper_Stamp::setOptionalContentGroup (
[ SetaPDF_Core_Document_OptionalContent_Group|null $optionalContentGroup = null ]
): void

Set the optional content group for this stamp.

Parameters
$optionalContentGroup : SetaPDF_Core_Document_OptionalContent_Group|null
 

setVisibility()

public SetaPDF_Stamper_Stamp::setVisibility (
null|string $visibility
): void

Set the visibility of the stamp object.

This method controls the visibility of the stamp object on screen view and/or printer output.

Parameters
$visibility : null|string

Use the constants VISIBILITY_XXX or null(equal to VISIBILITY_ALL)

Exceptions

Throws InvalidArgumentException

setWidth()

public SetaPDF_Stamper_Stamp_XObject::setWidth (
float|integer $width
): void

Set the individual width of the XObject stamp.

Parameters
$width : float|integer

The new width

setXObject()

public SetaPDF_Stamper_Stamp_XObject::setXObject (): void

Set the XObject.

Parameters
$xObject : SetaPDF_Core_XObject

The new xobject instance

stamp()

public SetaPDF_Stamper_Stamp::stamp (
SetaPDF_Core_Document $document, SetaPDF_Core_Document_Page $page, array $stampData
): bool

Stamp this stamp object onto a page.

Parameters
$document : SetaPDF_Core_Document

The document object

$page : SetaPDF_Core_Document_Page

The page object

$stampData : array

The stampData array

updateCacheCounter()

public SetaPDF_Stamper_Stamp::updateCacheCounter (
void
): void

Updates the cache counter.


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