Cpdf
[ class tree: Cpdf ] [ index: Cpdf ] [ all elements ]

Class: Cpdf

Source Location: /phpDocumentor/Converters/PDF/default/class.pdf.php

Class Overview


Cpdf


Author(s):

Version:

  • 009

Variables

Methods


Child classes:

Cezpdf
This class will take the basic interaction facilities of the Cpdf class and make more useful functions so that the user does not have to know all the ins and outs of pdf presentation to produce something pretty.

Class Details

[line 26]
Cpdf

A PHP class to provide the basic functionality to create a pdf document without any requirement for additional modules.

Note that they companion class CezPdf can be used to extend this class and dramatically simplify the creation of documents.

IMPORTANT NOTE there is no warranty, implied or otherwise with this software.

LICENCE This code has been placed in the Public Domain for all to enjoy.




Tags:

author:  Wayne Munro <pdf@ros.co.nz>
version:  009
link:  http://www.ros.co.nz/pdf


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Class Variables

$addLooseObjects = array()

[line 114]

array contains infomation about how the loose objects are to be added to the document


Type:  mixed


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$arc4 = ''

[line 159]

the ancryption array for the document encryption is stored here


Type:  mixed


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$arc4_objnum = 0

[line 163]

the object Id of the encryption information


Type:  mixed


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$callback = array()

[line 179]

array which forms a stack to keep track of nested callback functions


Type:  mixed


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$catalogId =

[line 39]

the objectId (number within the objects array) of the document catalog


Type:  mixed


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$checkpoint =  ''

[line 194]

store the stack for the transaction commands, each item in here is a record of the values of all the variables within the class, so that the user can rollback at will (from each 'start' command) note that this includes the objects array, so these can be large.


Type:  mixed


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$currentBaseFont = ''

[line 52]

the current base font


Type:  mixed


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$currentColour = array('r'=>-1,'g'=>-1,'b'=>-1)

[line 76]

current colour for fill operations, defaults to inactive value, all three components should be between 0 and 1 inclusive when active


Type:  mixed


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$currentContents =

[line 68]

object number of the currently active contents block


Type:  mixed


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$currentFont = ''

[line 48]

a record of the current font


Type:  mixed


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$currentFontNum = 0

[line 56]

the number of the current font within the font array


Type:  mixed


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$currentLineStyle = ''

[line 84]

current style that lines are drawn in


Type:  mixed


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$currentNode =

[line 60]


Type:  mixed


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$currentPage =

[line 64]

object number of the current page


Type:  mixed


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$currentStrokeColour = array('r'=>-1,'g'=>-1,'b'=>-1)

[line 80]

current colour for stroke operations (lines etc.)


Type:  mixed


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$currentTextState =  ''

[line 151]

track if the current font is bolded or italicised


Type:  mixed


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$destinations = array()

[line 188]

store label->id pairs for named destinations, these will be used to replace internal links

done this way so that destinations can be defined after the location that links to them



Type:  mixed


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$encrypted = 0

[line 171]

a flag to say if a document is to be encrypted or not


Type:  mixed


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$encryptionKey = ''

[line 175]

the ancryption key for the encryption of all the document content (structure is not encrypted)


Type:  mixed


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$fileIdentifier = ''

[line 167]

the file identifier, used to uniquely identify a pdf document


Type:  mixed


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$firstPageId =

[line 132]

the objectId of the first page of the document


Type:  mixed


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$fontFamilies = array()

[line 147]

store the information about the relationship between font families this used so that the code knows which font is the bold version of another font, etc.

the value of this array is initialised in the constuctor function.



Type:  mixed


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$fonts = array()

[line 44]

array carrying information about the fonts that the system currently knows about

used to ensure that a font is not loaded twice, among other things



Type:  mixed


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$infoObject = 0

[line 119]

the objectId of the information object for the document this contains authorship, title etc.


Type:  mixed


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$looseObjects = array()

[line 110]

an array which contains information about the objects which are not firmly attached to pages

these have been added with the addObject function



Type:  mixed


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$messages = ''

[line 155]

messages are stored here during processing, these can be selected afterwards to give some useful debug information


Type:  mixed


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$nCallback =  0

[line 183]

the number of callback functions in the callback array


Type:  mixed


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$nStack = 0

[line 105]

number of elements within the object Id storage stack


Type:  mixed


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$nStateStack =  0

[line 93]

number of elements within the state stack


Type:  mixed


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$numFonts = 0

[line 72]

number of fonts within the system


Type:  mixed


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$numImages = 0

[line 123]

number of images being tracked within the document


Type:  mixed


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$numObj = 0

[line 31]

the current number of pdf objects in the document


Type:  mixed


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$numPages = 0

[line 97]

number of page objects within the document


Type:  mixed


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$objects = array()

[line 35]

this array contains all of the pdf objects, ready for final assembly


Type:  mixed


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$options = array('compression'=>1)

[line 128]

an array containing options about the document

it defaults to turning on the compression of the objects



Type:  mixed


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$procsetObjectId =

[line 141]

the object Id of the procset object


Type:  mixed


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$stack = array()

[line 101]

object Id storage stack


Type:  mixed


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$stateStack = array()

[line 89]

an array which is used to save the state of the document, mainly the colours and styles

it is used to temporarily change to another state, the change back to what it was before



Type:  mixed


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$wordSpaceAdjust = 0

[line 137]

used to track the last used value of the inter-word spacing, this is so that it is known when the spacing is changed.


Type:  mixed


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Class Methods


constructor Cpdf [line 200]

Cpdf Cpdf( [ $pageSize = array(0,0,612,792)])

class constructor

this will start a new document




Tags:

var:  array of 4 numbers, defining the bottom left and upper right corner of the page. first two are normally zero.


Parameters:

  $pageSize 

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method addDestination [line 2972]

void addDestination( $label, $style, [ $a = 0], [ $b = 0], [ $c = 0])

create a labelled destination within the document



Parameters:

  $label 
  $style 
  $a 
  $b 
  $c 

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method addImage [line 2873]

void addImage( &$img, $x, $y, [ $w = 0], [ $h = 0], [ $quality = 75])

add an image into the document, from a GD object

this function is not all that reliable, and I would probably encourage people to use the file based functions




Parameters:

  &$img 
  $x 
  $y 
  $w 
  $h 
  $quality 

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method addInfo [line 2593]

void addInfo( $label, [ $value = 0])

add content to the documents info object



Parameters:

  $label 
  $value 

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method addInternalLink [line 1176]

void addInternalLink( $label, $x0, $y0, $x1, $y1)

add a link in the document to an internal destination (ie. within the document)



Parameters:

  $label 
  $x0 
  $y0 
  $x1 
  $y1 

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method addJpegFromFile [line 2828]

void addJpegFromFile( $img, $x, $y, [ $w = 0], [ $h = 0])

add a JPEG image into the document, from a file



Parameters:

  $img 
  $x 
  $y 
  $w 
  $h 

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method addLink [line 1167]

void addLink( $url, $x0, $y0, $x1, $y1)

add a link in the document to an external URL



Parameters:

  $url 
  $x0 
  $y0 
  $x1 
  $y1 

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method addMessage [line 3025]

void addMessage( $message)

used to add messages for use in debugging



Overridden in child classes as:

phpdocpdf::addMessage()

Parameters:

  $message 

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method addObject [line 2547]

void addObject( $id, [ $options = 'add'])

after an object has been created, it wil only show if it has been added, using this function.



Parameters:

  $id 
  $options 

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method addPngFromFile [line 2640]

void addPngFromFile( $file, $x, $y, [ $w = 0], [ $h = 0])

add a PNG image into the document, from a file

this should work with remote files




Parameters:

  $file 
  $x 
  $y 
  $w 
  $h 

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method addText [line 2159]

void addText( $x, $y, $size, $text, [ $angle = 0], [ $wordSpaceAdjust = 0])

add text to the document, at a specified location, size and angle on the page



Parameters:

  $x 
  $y 
  $size 
  $text 
  $angle 
  $wordSpaceAdjust 

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method addTextWrap [line 2334]

void addTextWrap( $x, $y, $width, $size, $text, [ $justification = 'left'], [ $angle = 0], [ $test = 0])

add text to the page, but ensure that it fits within a certain width if it does not fit then put in as much as possible, splitting at word boundaries and return the remainder.

justification and angle can also be specified for the text




Parameters:

  $x 
  $y 
  $width 
  $size 
  $text 
  $justification 
  $angle 
  $test 

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method ARC4 [line 1141]

void ARC4( $text)

ARC4 encrypt a text string



Parameters:

  $text 

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method ARC4_init [line 1115]

void ARC4_init( [ $key = ''])

initialize the ARC4 encryption



Parameters:

  $key 

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method checkAllHere [line 1217]

void checkAllHere( )

should be used for internal checks, not implemented as yet



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method closeObject [line 2521]

void closeObject( )

close an object



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method curve [line 1685]

void curve( $x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3)

draw a bezier curve based on 4 control points



Parameters:

  $x0 
  $y0 
  $x1 
  $y1 
  $x2 
  $y2 
  $x3 
  $y3 

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method ellipse [line 1716]

void ellipse( $x0, $y0, $r1, [ $r2 = 0], [ $angle = 0], [ $nSeg = 8], [ $astart = 0], [ $afinish = 360], [ $close = 1], [ $fill = 0])

draw an ellipse note that the part and filled ellipse are just special cases of this function

draws an ellipse in the current line style centered at $x0,$y0, radii $r1,$r2 if $r2 is not set, then a circle is drawn nSeg is not allowed to be less than 2, as this will simply draw a line (and will even draw a pretty crappy shape at 2, as we are approximating with bezier curves.




Parameters:

  $x0 
  $y0 
  $r1 
  $r2 
  $angle 
  $nSeg 
  $astart 
  $afinish 
  $close 
  $fill 

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method encryptInit [line 1101]

void encryptInit( $id)

initialize the encryption for processing a particular object



Parameters:

  $id 

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method filledEllipse [line 1702]

void filledEllipse( $x0, $y0, $r1, [ $r2 = 0], [ $angle = 0], [ $nSeg = 8], [ $astart = 0], [ $afinish = 360])

draw a filled ellipse



Parameters:

  $x0 
  $y0 
  $r1 
  $r2 
  $angle 
  $nSeg 
  $astart 
  $afinish 

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method filledRectangle [line 1838]

void filledRectangle( $x1, $y1, $width, $height)

a filled rectangle, note that it is the width and height of the rectangle which are the secondary paramaters, not

the coordinates of the upper-right corner




Parameters:

  $x1 
  $y1 
  $width 
  $height 

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method getFirstPageId [line 1642]

void getFirstPageId( )

function for the user to find out what the ID is of the first page that was created during startup - useful if they wish to add something to it later.



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method getFontDecender [line 1946]

void getFontDecender( $size)

return the font decender, this will normally return a negative number

if you add this number to the baseline, you get the level of the bottom of the font it is in the pdf user units




Parameters:

  $size 

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method getFontHeight [line 1932]

void getFontHeight( $size)

return the height in units of the current font in the given size



Parameters:

  $size 

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method getTextWidth [line 2251]

void getTextWidth( $size, $text)

calculate how wide a given text string will be on a page, at a given size.

this can be called externally, but is alse used by the other class functions




Parameters:

  $size 
  $text 

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method line [line 1678]

void line( $x1, $y1, $x2, $y2)

draw a line from one set of coordinates to another



Parameters:

  $x1 
  $y1 
  $x2 
  $y2 

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method md5_16 [line 1089]

void md5_16( $string)

calculate the 16 byte version of the 128 bit md5 digest of the string



Parameters:

  $string 

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method newPage [line 1854]

void newPage( [ $insert = 0], [ $id = 0], [ $pos = 'after'])

add a new page to the document

this also makes the new page the current active object




Parameters:

  $insert 
  $id 
  $pos 

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method openHere [line 2952]

void openHere( $style, [ $a = 0], [ $b = 0], [ $c = 0])

specify where the document should open when it first starts



Parameters:

  $style 
  $a 
  $b 
  $c 

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method openObject [line 2493]

void openObject( )

make a loose object, the output will go into this object, until it is closed, then will revert to the current one.

this object will not appear until it is included within a page. the function will return the object number




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method output [line 1223]

void output( [ $debug = 0])

return the pdf stream as a string returned from the function



Parameters:

  $debug 

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method o_action [line 729]

void o_action( $id, $action, [ $options = ''])

an action object, used to link to URLS initially



Parameters:

  $id 
  $action 
  $options 

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method o_annotation [line 772]

void o_annotation( $id, $action, [ $options = ''])

an annotation object, this will add an annotation to the current page.

initially will support just link annotations




Parameters:

  $id 
  $action 
  $options 

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method o_catalog [line 300]

void o_catalog( $id, $action, [ $options = ''])

define the document catalog, the overall controller for the document



Parameters:

  $id 
  $action 
  $options 

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method o_contents [line 893]

void o_contents( $id, $action, [ $options = ''])

the contents objects hold all of the content which appears on pages



Parameters:

  $id 
  $action 
  $options 

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method o_destination [line 227]

void o_destination( $id, $action, [ $options = ''])

destination object, used to specify the location for the user to jump to, presently on opening



Parameters:

  $id 
  $action 
  $options 

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method o_encryption [line 1018]

void o_encryption( $id, $action, [ $options = ''])

encryption object.



Parameters:

  $id 
  $action 
  $options 

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method o_font [line 478]

void o_font( $id, $action, [ $options = ''])

an object to hold the font description



Parameters:

  $id 
  $action 
  $options 

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method o_fontDescriptor [line 562]

void o_fontDescriptor( $id, $action, [ $options = ''])

a font descriptor, needed for including additional fonts



Parameters:

  $id 
  $action 
  $options 

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method o_fontEncoding [line 613]

void o_fontEncoding( $id, $action, [ $options = ''])

the font encoding



Parameters:

  $id 
  $action 
  $options 

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method o_image [line 943]

void o_image( $id, $action, [ $options = ''])

an image object, will be an XObject in the document, includes description and data



Parameters:

  $id 
  $action 
  $options 

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method o_info [line 685]

void o_info( $id, $action, [ $options = ''])

define the document information



Parameters:

  $id 
  $action 
  $options 

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method o_outlines [line 448]

void o_outlines( $id, $action, [ $options = ''])

define the outlines in the doc, empty for now



Parameters:

  $id 
  $action 
  $options 

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method o_page [line 824]

void o_page( $id, $action, [ $options = ''])

a page object, it also creates a contents object to hold its contents



Parameters:

  $id 
  $action 
  $options 

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method o_pages [line 350]

void o_pages( $id, $action, [ $options = ''])

object which is a parent to the pages in the document



Parameters:

  $id 
  $action 
  $options 

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method o_procset [line 650]

void o_procset( $id, $action, [ $options = ''])

the document procset, solves some problems with printing to old PS printers



Parameters:

  $id 
  $action 
  $options 

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method o_viewerPreferences [line 262]

void o_viewerPreferences( $id, $action, [ $options = ''])

set the viewer preferences



Parameters:

  $id 
  $action 
  $options 

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method partEllipse [line 1695]

void partEllipse( $x0, $y0, $astart, $afinish, $r1, [ $r2 = 0], [ $angle = 0], [ $nSeg = 8])

draw a part of an ellipse



Parameters:

  $x0 
  $y0 
  $astart 
  $afinish 
  $r1 
  $r2 
  $angle 
  $nSeg 

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method polygon [line 1821]

void polygon( $p, $np, [ $f = 0])

draw a polygon, the syntax for this is similar to the GD polygon command



Parameters:

  $p 
  $np 
  $f 

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method rectangle [line 1846]

void rectangle( $x1, $y1, $width, $height)

draw a rectangle, note that it is the width and height of the rectangle which are the secondary paramaters, not

the coordinates of the upper-right corner




Parameters:

  $x1 
  $y1 
  $width 
  $height 

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method reopenObject [line 2508]

void reopenObject( $id)

open an existing object for editing



Parameters:

  $id 

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method restoreState [line 2474]

void restoreState( [ $pageEnd = 0])

restore a previously saved state



Parameters:

  $pageEnd 

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method saveState [line 2450]

void saveState( [ $pageEnd = 0])

this will be called at a new page to return the state to what it was on the

end of the previous page, before the stack was closed down This is to get around not being able to have open 'q' across pages




Parameters:

  $pageEnd 

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method selectFont [line 1420]

void selectFont( $fontName, [ $encoding = ''], [ $set = 1])

if the font is not loaded then load it and make the required object

else just make it the current font the encoding array can contain 'encoding'=> 'none','WinAnsiEncoding','MacRomanEncoding' or 'MacExpertEncoding' note that encoding='none' will need to be used for symbolic fonts and 'differences' => an array of mappings between numbers 0->255 and character names.




Parameters:

  $fontName 
  $encoding 
  $set 

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method setColor [line 1658]

void setColor( $r, $g, $b, [ $force = 0])

sets the colour for fill operations



Parameters:

  $r 
  $g 
  $b 
  $force 

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method setEncryption [line 1187]

void setEncryption( [ $userPass = ''], [ $ownerPass = ''], [ $pc = array()])

set the encryption of the document can be used to turn it on and/or set the passwords which it will have.

also the functions that the user will have are set here, such as print, modify, add




Parameters:

  $userPass 
  $ownerPass 
  $pc 

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method setFontFamily [line 2988]

void setFontFamily( $family, [ $options = ''])

define font families, this is used to initialize the font families for the default fonts and for the user to add new ones for their fonts. The default bahavious can be overridden should that be desired.



Parameters:

  $family 
  $options 

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method setLineStyle [line 1792]

void setLineStyle( [ $width = 1], [ $cap = ''], [ $join = ''], [ $dash = ''], [ $phase = 0])

this sets the line drawing style.

width, is the thickness of the line in user units cap is the type of cap to put on the line, values can be 'butt','round','square' where the diffference between 'square' and 'butt' is that 'square' projects a flat end past the end of the line. join can be 'miter', 'round', 'bevel' dash is an array which sets the dash pattern, is a series of length values, which are the lengths of the on and off dashes. (2) represents 2 on, 2 off, 2 on , 2 off ... (2,1) is 2 on, 1 off, 2 on, 1 off.. etc phase is a modifier on the dash pattern which is used to shift the point at which the pattern starts.




Parameters:

  $width 
  $cap 
  $join 
  $dash 
  $phase 

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method setPreferences [line 2610]

void setPreferences( $label, [ $value = 0])

set the viewer preferences of the document, it is up to the browser to obey these.



Parameters:

  $label 
  $value 

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method setStrokeColor [line 1668]

void setStrokeColor( $r, $g, $b, [ $force = 0])

sets the colour for stroke operations



Parameters:

  $r 
  $g 
  $b 
  $force 

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method stopObject [line 2536]

void stopObject( $id)

stop an object from appearing on pages from this point on



Parameters:

  $id 

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method stream [line 1902]

void stream( [ $options = ''])

output the pdf code, streaming it to the browser

the relevant headers are set so that hopefully the browser will recognise it




Parameters:

  $options 

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method transaction [line 3032]

void transaction( $action)

a few functions which should allow the document to be treated transactionally.



Parameters:

  $action 

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