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<?php
/**
* 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
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Page.php 18993 2009-11-15 17:09:16Z alexander $
*/
/** Internally used classes */
require_once 'Zend/Pdf/Element.php';
require_once 'Zend/Pdf/Element/Array.php';
require_once 'Zend/Pdf/Element/String/Binary.php';
require_once 'Zend/Pdf/Element/Boolean.php';
require_once 'Zend/Pdf/Element/Dictionary.php';
require_once 'Zend/Pdf/Element/Name.php';
require_once 'Zend/Pdf/Element/Null.php';
require_once 'Zend/Pdf/Element/Numeric.php';
require_once 'Zend/Pdf/Element/String.php';
/**
* PDF Page
*
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Pdf_Page
{
/**** Class Constants ****/
/* Page Sizes */
/**
* Size representing an A4 page in portrait (tall) orientation.
*/
const SIZE_A4 = '595:842:';
/**
* Size representing an A4 page in landscape (wide) orientation.
*/
const SIZE_A4_LANDSCAPE = '842:595:';
/**
* Size representing a US Letter page in portrait (tall) orientation.
*/
const SIZE_LETTER = '612:792:';
/**
* Size representing a US Letter page in landscape (wide) orientation.
*/
const SIZE_LETTER_LANDSCAPE = '792:612:';
/* Shape Drawing */
/**
* Stroke the path only. Do not fill.
*/
const SHAPE_DRAW_STROKE = 0;
/**
* Fill the path only. Do not stroke.
*/
const SHAPE_DRAW_FILL = 1;
/**
* Fill and stroke the path.
*/
const SHAPE_DRAW_FILL_AND_STROKE = 2;
/* Shape Filling Methods */
/**
* Fill the path using the non-zero winding rule.
*/
const FILL_METHOD_NON_ZERO_WINDING = 0;
/**
* Fill the path using the even-odd rule.
*/
const FILL_METHOD_EVEN_ODD = 1;
/* Line Dash Types */
/**
* Solid line dash.
*/
const LINE_DASHING_SOLID = 0;
/**
* Page dictionary (refers to an inderect Zend_Pdf_Element_Dictionary object).
*
* @var Zend_Pdf_Element_Reference|Zend_Pdf_Element_Object
*/
protected $_pageDictionary;
/**
* PDF objects factory.
*
* @var Zend_Pdf_ElementFactory_Interface
*/
protected $_objFactory = null;
/**
* Flag which signals, that page is created separately from any PDF document or
* attached to anyone.
*
* @var boolean
*/
protected $_attached;
/**
* Stream of the drawing instructions.
*
* @var string
*/
protected $_contents = '';
/**
* Current style
*
* @var Zend_Pdf_Style
*/
protected $_style = null;
/**
* Counter for the "Save" operations
*
* @var integer
*/
protected $_saveCount = 0;
/**
* Safe Graphics State semafore
*
* If it's false, than we can't be sure Graphics State is restored withing
* context of previous contents stream (ex. drawing coordinate system may be rotated).
* We should encompass existing content with save/restore GS operators
*
* @var boolean
*/
protected $_safeGS;
/**
* Current font
*
* @var Zend_Pdf_Resource_Font
*/
protected $_font = null;
/**
* Current font size
*
* @var float
*/
protected $_fontSize;
/**
* Object constructor.
* Constructor signatures:
*
* 1. Load PDF page from a parsed PDF file.
* Object factory is created by PDF parser.
* ---------------------------------------------------------
* new Zend_Pdf_Page(Zend_Pdf_Element_Dictionary $pageDict,
* Zend_Pdf_ElementFactory_Interface $factory);
* ---------------------------------------------------------
*
* 2. Clone PDF page.
* New page is created in the same context as source page. Object factory is shared.
* Thus it will be attached to the document, but need to be placed into Zend_Pdf::$pages array
* to be included into output.
* ---------------------------------------------------------
* new Zend_Pdf_Page(Zend_Pdf_Page $page);
* ---------------------------------------------------------
*
* 3. Create new page with a specified pagesize.
* If $factory is null then it will be created and page must be attached to the document to be
* included into output.
* ---------------------------------------------------------
* new Zend_Pdf_Page(string $pagesize, Zend_Pdf_ElementFactory_Interface $factory = null);
* ---------------------------------------------------------
*
* 4. Create new page with a specified pagesize (in default user space units).
* If $factory is null then it will be created and page must be attached to the document to be
* included into output.
* ---------------------------------------------------------
* new Zend_Pdf_Page(numeric $width, numeric $height, Zend_Pdf_ElementFactory_Interface $factory = null);
* ---------------------------------------------------------
*
*
* @param mixed $param1
* @param mixed $param2
* @param mixed $param3
* @throws Zend_Pdf_Exception
*/
public function __construct($param1, $param2 = null, $param3 = null)
{
if ($param1 instanceof Zend_Pdf_Element_Reference &&
$param1->getType() == Zend_Pdf_Element::TYPE_DICTIONARY &&
$param2 instanceof Zend_Pdf_ElementFactory_Interface &&
$param3 === null
) {
$this->_pageDictionary = $param1;
$this->_objFactory = $param2;
$this->_attached = true;
$this->_safeGS = false;
return;
} else if ($param1 instanceof Zend_Pdf_Page && $param2 === null && $param3 === null) {
// Clone existing page.
// Let already existing content and resources to be shared between pages
// We don't give existing content modification functionality, so we don't need "deep copy"
$this->_objFactory = $param1->_objFactory;
$this->_attached = &$param1->_attached;
$this->_safeGS = false;
$this->_pageDictionary = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
foreach ($param1->_pageDictionary->getKeys() as $key) {
if ($key == 'Contents') {
// Clone Contents property
$this->_pageDictionary->Contents = new Zend_Pdf_Element_Array();
if ($param1->_pageDictionary->Contents->getType() != Zend_Pdf_Element::TYPE_ARRAY) {
// Prepare array of content streams and add existing stream
$this->_pageDictionary->Contents->items[] = $param1->_pageDictionary->Contents;
} else {
// Clone array of the content streams
foreach ($param1->_pageDictionary->Contents->items as $srcContentStream) {
$this->_pageDictionary->Contents->items[] = $srcContentStream;
}
}
} else {
$this->_pageDictionary->$key = $param1->_pageDictionary->$key;
}
}
return;
} else if (is_string($param1) &&
($param2 === null || $param2 instanceof Zend_Pdf_ElementFactory_Interface) &&
$param3 === null) {
if ($param2 !== null) {
$this->_objFactory = $param2;
} else {
require_once 'Zend/Pdf/ElementFactory.php';
$this->_objFactory = Zend_Pdf_ElementFactory::createFactory(1);
}
$this->_attached = false;
$this->_safeGS = true; /** New page created. That's users App responsibility to track GS changes */
switch (strtolower($param1)) {
case 'a4':
$param1 = Zend_Pdf_Page::SIZE_A4;
break;
case 'a4-landscape':
$param1 = Zend_Pdf_Page::SIZE_A4_LANDSCAPE;
break;
case 'letter':
$param1 = Zend_Pdf_Page::SIZE_LETTER;
break;
case 'letter-landscape':
$param1 = Zend_Pdf_Page::SIZE_LETTER_LANDSCAPE;
break;
default:
// should be in "x:y" form
}
$pageDim = explode(':', $param1);
if(count($pageDim) == 3) {
$pageWidth = $pageDim[0];
$pageHeight = $pageDim[1];
} else {
/**
* @todo support of user defined pagesize notations, like:
* "210x297mm", "595x842", "8.5x11in", "612x792"
*/
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Wrong pagesize notation.');
}
/**
* @todo support of pagesize recalculation to "default user space units"
*/
} else if (is_numeric($param1) && is_numeric($param2) &&
($param3 === null || $param3 instanceof Zend_Pdf_ElementFactory_Interface)) {
if ($param3 !== null) {
$this->_objFactory = $param3;
} else {
require_once 'Zend/Pdf/ElementFactory.php';
$this->_objFactory = Zend_Pdf_ElementFactory::createFactory(1);
}
$this->_attached = false;
$this->_safeGS = true; /** New page created. That's users App responsibility to track GS changes */
$pageWidth = $param1;
$pageHeight = $param2;
} else {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Unrecognized method signature, wrong number of arguments or wrong argument types.');
}
$this->_pageDictionary = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
$this->_pageDictionary->Type = new Zend_Pdf_Element_Name('Page');
require_once 'Zend/Pdf.php';
$this->_pageDictionary->LastModified = new Zend_Pdf_Element_String(Zend_Pdf::pdfDate());
$this->_pageDictionary->Resources = new Zend_Pdf_Element_Dictionary();
$this->_pageDictionary->MediaBox = new Zend_Pdf_Element_Array();
$this->_pageDictionary->MediaBox->items[] = new Zend_Pdf_Element_Numeric(0);
$this->_pageDictionary->MediaBox->items[] = new Zend_Pdf_Element_Numeric(0);
$this->_pageDictionary->MediaBox->items[] = new Zend_Pdf_Element_Numeric($pageWidth);
$this->_pageDictionary->MediaBox->items[] = new Zend_Pdf_Element_Numeric($pageHeight);
$this->_pageDictionary->Contents = new Zend_Pdf_Element_Array();
}
/**
* Clone operator
*
* @throws Zend_Pdf_Exception
*/
public function __clone()
{
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Cloning Zend_Pdf_Page object using \'clone\' keyword is not supported. Use \'new Zend_Pdf_Page($srcPage)\' syntax');
}
/**
* Attach resource to the page
*
* @param string $type
* @param Zend_Pdf_Resource $resource
* @return string
*/
protected function _attachResource($type, Zend_Pdf_Resource $resource)
{
// Check that Resources dictionary contains appropriate resource set
if ($this->_pageDictionary->Resources->$type === null) {
$this->_pageDictionary->Resources->touch();
$this->_pageDictionary->Resources->$type = new Zend_Pdf_Element_Dictionary();
} else {
$this->_pageDictionary->Resources->$type->touch();
}
// Check, that resource is already attached to resource set.
$resObject = $resource->getResource();
foreach ($this->_pageDictionary->Resources->$type->getKeys() as $ResID) {
if ($this->_pageDictionary->Resources->$type->$ResID === $resObject) {
return $ResID;
}
}
$idCounter = 1;
do {
$newResName = $type[0] . $idCounter++;
} while ($this->_pageDictionary->Resources->$type->$newResName !== null);
$this->_pageDictionary->Resources->$type->$newResName = $resObject;
$this->_objFactory->attach($resource->getFactory());
return $newResName;
}
/**
* Add procedureSet to the Page description
*
* @param string $procSetName
*/
protected function _addProcSet($procSetName)
{
// Check that Resources dictionary contains ProcSet entry
if ($this->_pageDictionary->Resources->ProcSet === null) {
$this->_pageDictionary->Resources->touch();
$this->_pageDictionary->Resources->ProcSet = new Zend_Pdf_Element_Array();
} else {
$this->_pageDictionary->Resources->ProcSet->touch();
}
foreach ($this->_pageDictionary->Resources->ProcSet->items as $procSetEntry) {
if ($procSetEntry->value == $procSetName) {
// Procset is already included into a ProcSet array
return;
}
}
$this->_pageDictionary->Resources->ProcSet->items[] = new Zend_Pdf_Element_Name($procSetName);
}
/**
* Retrive PDF file reference to the page
*
* @internal
* @return Zend_Pdf_Element_Dictionary
*/
public function getPageDictionary()
{
return $this->_pageDictionary;
}
/**
* Dump current drawing instructions into the content stream.
*
* @todo Don't forget to close all current graphics operations (like path drawing)
*
* @throws Zend_Pdf_Exception
*/
public function flush()
{
if ($this->_saveCount != 0) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Saved graphics state is not restored');
}
if ($this->_contents == '') {
return;
}
if ($this->_pageDictionary->Contents->getType() != Zend_Pdf_Element::TYPE_ARRAY) {
/**
* It's a stream object.
* Prepare Contents page attribute for update.
*/
$this->_pageDictionary->touch();
$currentPageContents = $this->_pageDictionary->Contents;
$this->_pageDictionary->Contents = new Zend_Pdf_Element_Array();
$this->_pageDictionary->Contents->items[] = $currentPageContents;
} else {
$this->_pageDictionary->Contents->touch();
}
if ((!$this->_safeGS) && (count($this->_pageDictionary->Contents->items) != 0)) {
/**
* Page already has some content which is not treated as safe.
*
* Add save/restore GS operators
*/
$this->_addProcSet('PDF');
$newContentsArray = new Zend_Pdf_Element_Array();
$newContentsArray->items[] = $this->_objFactory->newStreamObject(" q\n");
foreach ($this->_pageDictionary->Contents->items as $contentStream) {
$newContentsArray->items[] = $contentStream;
}
$newContentsArray->items[] = $this->_objFactory->newStreamObject(" Q\n");
$this->_pageDictionary->touch();
$this->_pageDictionary->Contents = $newContentsArray;
$this->_safeGS = true;
}
$this->_pageDictionary->Contents->items[] =
$this->_objFactory->newStreamObject($this->_contents);
$this->_contents = '';
}
/**
* Prepare page to be rendered into PDF.
*
* @todo Don't forget to close all current graphics operations (like path drawing)
*
* @param Zend_Pdf_ElementFactory_Interface $objFactory
* @throws Zend_Pdf_Exception
*/
public function render(Zend_Pdf_ElementFactory_Interface $objFactory)
{
$this->flush();
if ($objFactory === $this->_objFactory) {
// Page is already attached to the document.
return;
}
if ($this->_attached) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Page is attached to one documen, but rendered in context of another.');
/**
* @todo Page cloning must be implemented here instead of exception.
* PDF objects (ex. fonts) can be shared between pages.
* Thus all referenced objects, which can be modified, must be cloned recursively,
* to avoid producing wrong object references in a context of source PDF.
*/
//...
} else {
$objFactory->attach($this->_objFactory);
}
}
/**
* Set fill color.
*
* @param Zend_Pdf_Color $color
* @return Zend_Pdf_Page
*/
public function setFillColor(Zend_Pdf_Color $color)
{
$this->_addProcSet('PDF');
$this->_contents .= $color->instructions(false);
return $this;
}
/**
* Set line color.
*
* @param Zend_Pdf_Color $color
* @return Zend_Pdf_Page
*/
public function setLineColor(Zend_Pdf_Color $color)
{
$this->_addProcSet('PDF');
$this->_contents .= $color->instructions(true);
return $this;
}
/**
* Set line width.
*
* @param float $width
* @return Zend_Pdf_Page
*/
public function setLineWidth($width)
{
$this->_addProcSet('PDF');
$widthObj = new Zend_Pdf_Element_Numeric($width);
$this->_contents .= $widthObj->toString() . " w\n";
return $this;
}
/**
* Set line dashing pattern
*
* Pattern is an array of floats: array(on_length, off_length, on_length, off_length, ...)
* Phase is shift from the beginning of line.
*
* @param array $pattern
* @param array $phase
* @return Zend_Pdf_Page
*/
public function setLineDashingPattern($pattern, $phase = 0)
{
$this->_addProcSet('PDF');
if ($pattern === Zend_Pdf_Page::LINE_DASHING_SOLID) {
$pattern = array();
$phase = 0;
}
$dashPattern = new Zend_Pdf_Element_Array();
$phaseEleemnt = new Zend_Pdf_Element_Numeric($phase);
foreach ($pattern as $dashItem) {
$dashElement = new Zend_Pdf_Element_Numeric($dashItem);
$dashPattern->items[] = $dashElement;
}
$this->_contents .= $dashPattern->toString() . ' '
. $phaseEleemnt->toString() . " d\n";
return $this;
}
/**
* Set current font.
*
* @param Zend_Pdf_Resource_Font $font
* @param float $fontSize
* @return Zend_Pdf_Page
*/
public function setFont(Zend_Pdf_Resource_Font $font, $fontSize)
{
$this->_addProcSet('Text');
$fontName = $this->_attachResource('Font', $font);
$this->_font = $font;
$this->_fontSize = $fontSize;
$fontNameObj = new Zend_Pdf_Element_Name($fontName);
$fontSizeObj = new Zend_Pdf_Element_Numeric($fontSize);
$this->_contents .= $fontNameObj->toString() . ' ' . $fontSizeObj->toString() . " Tf\n";
return $this;
}
/**
* Set the style to use for future drawing operations on this page
*
* @param Zend_Pdf_Style $style
* @return Zend_Pdf_Page
*/
public function setStyle(Zend_Pdf_Style $style)
{
$this->_style = $style;
$this->_addProcSet('Text');
$this->_addProcSet('PDF');
if ($style->getFont() !== null) {
$this->setFont($style->getFont(), $style->getFontSize());
}
$this->_contents .= $style->instructions($this->_pageDictionary->Resources);
return $this;
}
/**
* 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
*
* @param float $alpha
* @param string $mode
* @throws Zend_Pdf_Exception
* @return Zend_Pdf_Page
*/
public function setAlpha($alpha, $mode = 'Normal')
{
if (!in_array($mode, array('Normal', 'Multiply', 'Screen', 'Overlay', 'Darken', 'Lighten', 'ColorDodge',
'ColorBurn', 'HardLight', 'SoftLight', 'Difference', 'Exclusion'))) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Unsupported transparency mode.');
}
if (!is_numeric($alpha) || $alpha < 0 || $alpha > 1) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Alpha value must be numeric between 0 (transparent) and 1 (opaque).');
}
$this->_addProcSet('Text');
$this->_addProcSet('PDF');
$resources = $this->_pageDictionary->Resources;
// Check if Resources dictionary contains ExtGState entry
if ($resources->ExtGState === null) {
$resources->touch();
$resources->ExtGState = new Zend_Pdf_Element_Dictionary();
} else {
$resources->ExtGState->touch();
}
$idCounter = 1;
do {
$gStateName = 'GS' . $idCounter++;
} while ($resources->ExtGState->$gStateName !== null);
$gStateDictionary = new Zend_Pdf_Element_Dictionary();
$gStateDictionary->Type = new Zend_Pdf_Element_Name('ExtGState');
$gStateDictionary->BM = new Zend_Pdf_Element_Name($mode);
$gStateDictionary->CA = new Zend_Pdf_Element_Numeric($alpha);
$gStateDictionary->ca = new Zend_Pdf_Element_Numeric($alpha);
$resources->ExtGState->$gStateName = $this->_objFactory->newObject($gStateDictionary);
$gStateNameObj = new Zend_Pdf_Element_Name($gStateName);
$this->_contents .= $gStateNameObj->toString() . " gs\n";
return $this;
}
/**
* Get current font.
*
* @return Zend_Pdf_Resource_Font $font
*/
public function getFont()
{
return $this->_font;
}
/**
* Extract resources attached to the page
*
* This method is not intended to be used in userland, but helps to optimize some document wide operations
*
* returns array of Zend_Pdf_Element_Dictionary objects
*
* @internal
* @return array
*/
public function extractResources()
{
return $this->_pageDictionary->Resources;
}
/**
* Extract fonts attached to the page
*
* returns array of Zend_Pdf_Resource_Font_Extracted objects
*
* @return array
* @throws Zend_Pdf_Exception
*/
public function extractFonts()
{
if ($this->_pageDictionary->Resources->Font === null) {
// Page doesn't have any font attached
// Return empty array
return array();
}
$fontResources = $this->_pageDictionary->Resources->Font;
$fontResourcesUnique = array();
foreach ($fontResources->getKeys() as $fontResourceName) {
$fontDictionary = $fontResources->$fontResourceName;
if (! ($fontDictionary instanceof Zend_Pdf_Element_Reference ||
$fontDictionary instanceof Zend_Pdf_Element_Object) ) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Font dictionary has to be an indirect object or object reference.');
}
$fontResourcesUnique[spl_object_hash($fontDictionary->getObject())] = $fontDictionary;
}
$fonts = array();
require_once 'Zend/Pdf/Exception.php';
foreach ($fontResourcesUnique as $resourceId => $fontDictionary) {
try {
require_once 'Zend/Pdf/Resource/Font/Extracted.php';
// Try to extract font
$extractedFont = new Zend_Pdf_Resource_Font_Extracted($fontDictionary);
$fonts[$resourceId] = $extractedFont;
} catch (Zend_Pdf_Exception $e) {
if ($e->getMessage() != 'Unsupported font type.') {
throw $e;
}
}
}
return $fonts;
}
/**
* Extract font attached to the page by specific font name
*
* $fontName should be specified in UTF-8 encoding
*
* @return Zend_Pdf_Resource_Font_Extracted|null
* @throws Zend_Pdf_Exception
*/
public function extractFont($fontName)
{
if ($this->_pageDictionary->Resources->Font === null) {
// Page doesn't have any font attached
return null;
}
$fontResources = $this->_pageDictionary->Resources->Font;
$fontResourcesUnique = array();
require_once 'Zend/Pdf/Exception.php';
foreach ($fontResources->getKeys() as $fontResourceName) {
$fontDictionary = $fontResources->$fontResourceName;
if (! ($fontDictionary instanceof Zend_Pdf_Element_Reference ||
$fontDictionary instanceof Zend_Pdf_Element_Object) ) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Font dictionary has to be an indirect object or object reference.');
}
$resourceId = spl_object_hash($fontDictionary->getObject());
if (isset($fontResourcesUnique[$resourceId])) {
continue;
} else {
// Mark resource as processed
$fontResourcesUnique[$resourceId] = 1;
}
if ($fontDictionary->BaseFont->value != $fontName) {
continue;
}
try {
// Try to extract font
require_once 'Zend/Pdf/Resource/Font/Extracted.php';
return new Zend_Pdf_Resource_Font_Extracted($fontDictionary);
} catch (Zend_Pdf_Exception $e) {
if ($e->getMessage() != 'Unsupported font type.') {
throw $e;
}
// Continue searhing font with specified name
}
}
return null;
}
/**
* Get current font size
*
* @return float $fontSize
*/
public function getFontSize()
{
return $this->_fontSize;
}
/**
* Return the style, applied to the page.
*
* @return Zend_Pdf_Style|null
*/
public function getStyle()
{
return $this->_style;
}
/**
* Save the graphics state of this page.
* This takes a snapshot of the currently applied style, position, clipping area and
* any rotation/translation/scaling that has been applied.
*
* @todo check for the open paths
* @throws Zend_Pdf_Exception - if a save is performed with an open path
* @return Zend_Pdf_Page
*/
public function saveGS()
{
$this->_saveCount++;
$this->_addProcSet('PDF');
$this->_contents .= " q\n";
return $this;
}
/**
* Restore the graphics state that was saved with the last call to saveGS().
*
* @throws Zend_Pdf_Exception - if there is no previously saved state
* @return Zend_Pdf_Page
*/
public function restoreGS()
{
if ($this->_saveCount-- <= 0) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Restoring graphics state which is not saved');
}
$this->_contents .= " Q\n";
return $this;
}
/**
* Intersect current clipping area with a circle.
*
* @param float $x
* @param float $y
* @param float $radius
* @param float $startAngle
* @param float $endAngle
* @return Zend_Pdf_Page
*/
public function clipCircle($x, $y, $radius, $startAngle = null, $endAngle = null)
{
$this->clipEllipse($x - $radius, $y - $radius,
$x + $radius, $y + $radius,
$startAngle, $endAngle);
return $this;
}
/**
* Intersect current clipping area with a polygon.
*
* Method signatures:
* drawEllipse($x1, $y1, $x2, $y2);
* drawEllipse($x1, $y1, $x2, $y2, $startAngle, $endAngle);
*
* @todo process special cases with $x2-$x1 == 0 or $y2-$y1 == 0
*
* @param float $x1
* @param float $y1
* @param float $x2
* @param float $y2
* @param float $startAngle
* @param float $endAngle
* @return Zend_Pdf_Page
*/
public function clipEllipse($x1, $y1, $x2, $y2, $startAngle = null, $endAngle = null)
{
$this->_addProcSet('PDF');
if ($x2 < $x1) {
$temp = $x1;
$x1 = $x2;
$x2 = $temp;
}
if ($y2 < $y1) {
$temp = $y1;
$y1 = $y2;
$y2 = $temp;
}
$x = ($x1 + $x2)/2.;
$y = ($y1 + $y2)/2.;
$xC = new Zend_Pdf_Element_Numeric($x);
$yC = new Zend_Pdf_Element_Numeric($y);
if ($startAngle !== null) {
if ($startAngle != 0) { $startAngle = fmod($startAngle, M_PI*2); }
if ($endAngle != 0) { $endAngle = fmod($endAngle, M_PI*2); }
if ($startAngle > $endAngle) {
$endAngle += M_PI*2;
}
$clipPath = $xC->toString() . ' ' . $yC->toString() . " m\n";
$clipSectors = (int)ceil(($endAngle - $startAngle)/M_PI_4);
$clipRadius = max($x2 - $x1, $y2 - $y1);
for($count = 0; $count <= $clipSectors; $count++) {
$pAngle = $startAngle + ($endAngle - $startAngle)*$count/(float)$clipSectors;
$pX = new Zend_Pdf_Element_Numeric($x + cos($pAngle)*$clipRadius);
$pY = new Zend_Pdf_Element_Numeric($y + sin($pAngle)*$clipRadius);
$clipPath .= $pX->toString() . ' ' . $pY->toString() . " l\n";
}
$this->_contents .= $clipPath . "h\nW\nn\n";
}
$xLeft = new Zend_Pdf_Element_Numeric($x1);
$xRight = new Zend_Pdf_Element_Numeric($x2);
$yUp = new Zend_Pdf_Element_Numeric($y2);
$yDown = new Zend_Pdf_Element_Numeric($y1);
$xDelta = 2*(M_SQRT2 - 1)*($x2 - $x1)/3.;
$yDelta = 2*(M_SQRT2 - 1)*($y2 - $y1)/3.;
$xr = new Zend_Pdf_Element_Numeric($x + $xDelta);
$xl = new Zend_Pdf_Element_Numeric($x - $xDelta);
$yu = new Zend_Pdf_Element_Numeric($y + $yDelta);
$yd = new Zend_Pdf_Element_Numeric($y - $yDelta);
$this->_contents .= $xC->toString() . ' ' . $yUp->toString() . " m\n"
. $xr->toString() . ' ' . $yUp->toString() . ' '
. $xRight->toString() . ' ' . $yu->toString() . ' '
. $xRight->toString() . ' ' . $yC->toString() . " c\n"
. $xRight->toString() . ' ' . $yd->toString() . ' '
. $xr->toString() . ' ' . $yDown->toString() . ' '
. $xC->toString() . ' ' . $yDown->toString() . " c\n"
. $xl->toString() . ' ' . $yDown->toString() . ' '
. $xLeft->toString() . ' ' . $yd->toString() . ' '
. $xLeft->toString() . ' ' . $yC->toString() . " c\n"
. $xLeft->toString() . ' ' . $yu->toString() . ' '
. $xl->toString() . ' ' . $yUp->toString() . ' '
. $xC->toString() . ' ' . $yUp->toString() . " c\n"
. "h\nW\nn\n";
return $this;
}
/**
* Intersect current clipping area with a polygon.
*
* @param array $x - array of float (the X co-ordinates of the vertices)
* @param array $y - array of float (the Y co-ordinates of the vertices)
* @param integer $fillMethod
* @return Zend_Pdf_Page
*/
public function clipPolygon($x, $y, $fillMethod = Zend_Pdf_Page::FILL_METHOD_NON_ZERO_WINDING)
{
$this->_addProcSet('PDF');
$firstPoint = true;
foreach ($x as $id => $xVal) {
$xObj = new Zend_Pdf_Element_Numeric($xVal);
$yObj = new Zend_Pdf_Element_Numeric($y[$id]);
if ($firstPoint) {
$path = $xObj->toString() . ' ' . $yObj->toString() . " m\n";
$firstPoint = false;
} else {
$path .= $xObj->toString() . ' ' . $yObj->toString() . " l\n";
}
}
$this->_contents .= $path;
if ($fillMethod == Zend_Pdf_Page::FILL_METHOD_NON_ZERO_WINDING) {
$this->_contents .= " h\n W\nn\n";
} else {
// Even-Odd fill method.
$this->_contents .= " h\n W*\nn\n";
}
return $this;
}
/**
* Intersect current clipping area with a rectangle.
*
* @param float $x1
* @param float $y1
* @param float $x2
* @param float $y2
* @return Zend_Pdf_Page
*/
public function clipRectangle($x1, $y1, $x2, $y2)
{
$this->_addProcSet('PDF');
$x1Obj = new Zend_Pdf_Element_Numeric($x1);
$y1Obj = new Zend_Pdf_Element_Numeric($y1);
$widthObj = new Zend_Pdf_Element_Numeric($x2 - $x1);
$height2Obj = new Zend_Pdf_Element_Numeric($y2 - $y1);
$this->_contents .= $x1Obj->toString() . ' ' . $y1Obj->toString() . ' '
. $widthObj->toString() . ' ' . $height2Obj->toString() . " re\n"
. " W\nn\n";
return $this;
}
/**
* Draw a Zend_Pdf_ContentStream at the specified position on the page
*
* @param ZPdfContentStream $cs
* @param float $x1
* @param float $y1
* @param float $x2
* @param float $y2
* @return Zend_Pdf_Page
*/
public function drawContentStream($cs, $x1, $y1, $x2, $y2)
{
/** @todo implementation */
return $this;
}
/**
* Draw a circle centered on x, y with a radius of radius.
*
* Method signatures:
* drawCircle($x, $y, $radius);
* drawCircle($x, $y, $radius, $fillType);
* drawCircle($x, $y, $radius, $startAngle, $endAngle);
* drawCircle($x, $y, $radius, $startAngle, $endAngle, $fillType);
*
*
* It's not a really circle, because PDF supports only cubic Bezier curves.
* But _very_ good approximation.
* It differs from a real circle on a maximum 0.00026 radiuses
* (at PI/8, 3*PI/8, 5*PI/8, 7*PI/8, 9*PI/8, 11*PI/8, 13*PI/8 and 15*PI/8 angles).
* At 0, PI/4, PI/2, 3*PI/4, PI, 5*PI/4, 3*PI/2 and 7*PI/4 it's exactly a tangent to a circle.
*
* @param float $x
* @param float $y
* @param float $radius
* @param mixed $param4
* @param mixed $param5
* @param mixed $param6
* @return Zend_Pdf_Page
*/
public function drawCircle($x, $y, $radius, $param4 = null, $param5 = null, $param6 = null)
{
$this->drawEllipse($x - $radius, $y - $radius,
$x + $radius, $y + $radius,
$param4, $param5, $param6);
return $this;
}
/**
* Draw an ellipse inside the specified rectangle.
*
* Method signatures:
* drawEllipse($x1, $y1, $x2, $y2);
* drawEllipse($x1, $y1, $x2, $y2, $fillType);
* drawEllipse($x1, $y1, $x2, $y2, $startAngle, $endAngle);
* drawEllipse($x1, $y1, $x2, $y2, $startAngle, $endAngle, $fillType);
*
* @todo process special cases with $x2-$x1 == 0 or $y2-$y1 == 0
*
* @param float $x1
* @param float $y1
* @param float $x2
* @param float $y2
* @param mixed $param5
* @param mixed $param6
* @param mixed $param7
* @return Zend_Pdf_Page
*/
public function drawEllipse($x1, $y1, $x2, $y2, $param5 = null, $param6 = null, $param7 = null)
{
if ($param5 === null) {
// drawEllipse($x1, $y1, $x2, $y2);
$startAngle = null;
$fillType = Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE;
} else if ($param6 === null) {
// drawEllipse($x1, $y1, $x2, $y2, $fillType);
$startAngle = null;
$fillType = $param5;
} else {
// drawEllipse($x1, $y1, $x2, $y2, $startAngle, $endAngle);
// drawEllipse($x1, $y1, $x2, $y2, $startAngle, $endAngle, $fillType);
$startAngle = $param5;
$endAngle = $param6;
if ($param7 === null) {
$fillType = Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE;
} else {
$fillType = $param7;
}
}
$this->_addProcSet('PDF');
if ($x2 < $x1) {
$temp = $x1;
$x1 = $x2;
$x2 = $temp;
}
if ($y2 < $y1) {
$temp = $y1;
$y1 = $y2;
$y2 = $temp;
}
$x = ($x1 + $x2)/2.;
$y = ($y1 + $y2)/2.;
$xC = new Zend_Pdf_Element_Numeric($x);
$yC = new Zend_Pdf_Element_Numeric($y);
if ($startAngle !== null) {
if ($startAngle != 0) { $startAngle = fmod($startAngle, M_PI*2); }
if ($endAngle != 0) { $endAngle = fmod($endAngle, M_PI*2); }
if ($startAngle > $endAngle) {
$endAngle += M_PI*2;
}
$clipPath = $xC->toString() . ' ' . $yC->toString() . " m\n";
$clipSectors = (int)ceil(($endAngle - $startAngle)/M_PI_4);
$clipRadius = max($x2 - $x1, $y2 - $y1);
for($count = 0; $count <= $clipSectors; $count++) {
$pAngle = $startAngle + ($endAngle - $startAngle)*$count/(float)$clipSectors;
$pX = new Zend_Pdf_Element_Numeric($x + cos($pAngle)*$clipRadius);
$pY = new Zend_Pdf_Element_Numeric($y + sin($pAngle)*$clipRadius);
$clipPath .= $pX->toString() . ' ' . $pY->toString() . " l\n";
}
$this->_contents .= "q\n" . $clipPath . "h\nW\nn\n";
}
$xLeft = new Zend_Pdf_Element_Numeric($x1);
$xRight = new Zend_Pdf_Element_Numeric($x2);
$yUp = new Zend_Pdf_Element_Numeric($y2);
$yDown = new Zend_Pdf_Element_Numeric($y1);
$xDelta = 2*(M_SQRT2 - 1)*($x2 - $x1)/3.;
$yDelta = 2*(M_SQRT2 - 1)*($y2 - $y1)/3.;
$xr = new Zend_Pdf_Element_Numeric($x + $xDelta);
$xl = new Zend_Pdf_Element_Numeric($x - $xDelta);
$yu = new Zend_Pdf_Element_Numeric($y + $yDelta);
$yd = new Zend_Pdf_Element_Numeric($y - $yDelta);
$this->_contents .= $xC->toString() . ' ' . $yUp->toString() . " m\n"
. $xr->toString() . ' ' . $yUp->toString() . ' '
. $xRight->toString() . ' ' . $yu->toString() . ' '
. $xRight->toString() . ' ' . $yC->toString() . " c\n"
. $xRight->toString() . ' ' . $yd->toString() . ' '
. $xr->toString() . ' ' . $yDown->toString() . ' '
. $xC->toString() . ' ' . $yDown->toString() . " c\n"
. $xl->toString() . ' ' . $yDown->toString() . ' '
. $xLeft->toString() . ' ' . $yd->toString() . ' '
. $xLeft->toString() . ' ' . $yC->toString() . " c\n"
. $xLeft->toString() . ' ' . $yu->toString() . ' '
. $xl->toString() . ' ' . $yUp->toString() . ' '
. $xC->toString() . ' ' . $yUp->toString() . " c\n";
switch ($fillType) {
case Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE:
$this->_contents .= " B*\n";
break;
case Zend_Pdf_Page::SHAPE_DRAW_FILL:
$this->_contents .= " f*\n";
break;
case Zend_Pdf_Page::SHAPE_DRAW_STROKE:
$this->_contents .= " S\n";
break;
}
if ($startAngle !== null) {
$this->_contents .= "Q\n";
}
return $this;
}
/**
* Draw an image at the specified position on the page.
*
* @param Zend_Pdf_Image $image
* @param float $x1
* @param float $y1
* @param float $x2
* @param float $y2
* @return Zend_Pdf_Page
*/
public function drawImage(Zend_Pdf_Resource_Image $image, $x1, $y1, $x2, $y2)
{
$this->_addProcSet('PDF');
$imageName = $this->_attachResource('XObject', $image);
$imageNameObj = new Zend_Pdf_Element_Name($imageName);
$x1Obj = new Zend_Pdf_Element_Numeric($x1);
$y1Obj = new Zend_Pdf_Element_Numeric($y1);
$widthObj = new Zend_Pdf_Element_Numeric($x2 - $x1);
$heightObj = new Zend_Pdf_Element_Numeric($y2 - $y1);
$this->_contents .= "q\n"
. '1 0 0 1 ' . $x1Obj->toString() . ' ' . $y1Obj->toString() . " cm\n"
. $widthObj->toString() . ' 0 0 ' . $heightObj->toString() . " 0 0 cm\n"
. $imageNameObj->toString() . " Do\n"
. "Q\n";
return $this;
}
/**
* Draw a LayoutBox at the specified position on the page.
*
* @param Zend_Pdf_Element_LayoutBox $box
* @param float $x
* @param float $y
* @return Zend_Pdf_Page
*/
public function drawLayoutBox($box, $x, $y)
{
/** @todo implementation */
return $this;
}
/**
* Draw a line from x1,y1 to x2,y2.
*
* @param float $x1
* @param float $y1
* @param float $x2
* @param float $y2
* @return Zend_Pdf_Page
*/
public function drawLine($x1, $y1, $x2, $y2)
{
$this->_addProcSet('PDF');
$x1Obj = new Zend_Pdf_Element_Numeric($x1);
$y1Obj = new Zend_Pdf_Element_Numeric($y1);
$x2Obj = new Zend_Pdf_Element_Numeric($x2);
$y2Obj = new Zend_Pdf_Element_Numeric($y2);
$this->_contents .= $x1Obj->toString() . ' ' . $y1Obj->toString() . " m\n"
. $x2Obj->toString() . ' ' . $y2Obj->toString() . " l\n S\n";
return $this;
}
/**
* Draw a polygon.
*
* If $fillType is Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE or
* Zend_Pdf_Page::SHAPE_DRAW_FILL, then polygon is automatically closed.
* See detailed description of these methods in a PDF documentation
* (section 4.4.2 Path painting Operators, Filling)
*
* @param array $x - array of float (the X co-ordinates of the vertices)
* @param array $y - array of float (the Y co-ordinates of the vertices)
* @param integer $fillType
* @param integer $fillMethod
* @return Zend_Pdf_Page
*/
public function drawPolygon($x, $y,
$fillType = Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE,
$fillMethod = Zend_Pdf_Page::FILL_METHOD_NON_ZERO_WINDING)
{
$this->_addProcSet('PDF');
$firstPoint = true;
foreach ($x as $id => $xVal) {
$xObj = new Zend_Pdf_Element_Numeric($xVal);
$yObj = new Zend_Pdf_Element_Numeric($y[$id]);
if ($firstPoint) {
$path = $xObj->toString() . ' ' . $yObj->toString() . " m\n";
$firstPoint = false;
} else {
$path .= $xObj->toString() . ' ' . $yObj->toString() . " l\n";
}
}
$this->_contents .= $path;
switch ($fillType) {
case Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE:
if ($fillMethod == Zend_Pdf_Page::FILL_METHOD_NON_ZERO_WINDING) {
$this->_contents .= " b\n";
} else {
// Even-Odd fill method.
$this->_contents .= " b*\n";
}
break;
case Zend_Pdf_Page::SHAPE_DRAW_FILL:
if ($fillMethod == Zend_Pdf_Page::FILL_METHOD_NON_ZERO_WINDING) {
$this->_contents .= " h\n f\n";
} else {
// Even-Odd fill method.
$this->_contents .= " h\n f*\n";
}
break;
case Zend_Pdf_Page::SHAPE_DRAW_STROKE:
$this->_contents .= " S\n";
break;
}
return $this;
}
/**
* Draw a rectangle.
*
* Fill types:
* Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE - fill rectangle and stroke (default)
* Zend_Pdf_Page::SHAPE_DRAW_STROKE - stroke rectangle
* Zend_Pdf_Page::SHAPE_DRAW_FILL - fill rectangle
*
* @param float $x1
* @param float $y1
* @param float $x2
* @param float $y2
* @param integer $fillType
* @return Zend_Pdf_Page
*/
public function drawRectangle($x1, $y1, $x2, $y2, $fillType = Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE)
{
$this->_addProcSet('PDF');
$x1Obj = new Zend_Pdf_Element_Numeric($x1);
$y1Obj = new Zend_Pdf_Element_Numeric($y1);
$widthObj = new Zend_Pdf_Element_Numeric($x2 - $x1);
$height2Obj = new Zend_Pdf_Element_Numeric($y2 - $y1);
$this->_contents .= $x1Obj->toString() . ' ' . $y1Obj->toString() . ' '
. $widthObj->toString() . ' ' . $height2Obj->toString() . " re\n";
switch ($fillType) {
case Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE:
$this->_contents .= " B*\n";
break;
case Zend_Pdf_Page::SHAPE_DRAW_FILL:
$this->_contents .= " f*\n";
break;
case Zend_Pdf_Page::SHAPE_DRAW_STROKE:
$this->_contents .= " S\n";
break;
}
return $this;
}
/**
* Draw a line of text at the specified position.
*
* @param string $text
* @param float $x
* @param float $y
* @param string $charEncoding (optional) Character encoding of source text.
* Defaults to current locale.
* @throws Zend_Pdf_Exception
* @return Zend_Pdf_Page
*/
public function drawText($text, $x, $y, $charEncoding = '')
{
if ($this->_font === null) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Font has not been set');
}
$this->_addProcSet('Text');
$textObj = new Zend_Pdf_Element_String($this->_font->encodeString($text, $charEncoding));
$xObj = new Zend_Pdf_Element_Numeric($x);
$yObj = new Zend_Pdf_Element_Numeric($y);
$this->_contents .= "BT\n"
. $xObj->toString() . ' ' . $yObj->toString() . " Td\n"
. $textObj->toString() . " Tj\n"
. "ET\n";
return $this;
}
/**
*
* @param Zend_Pdf_Annotation $annotation
* @return Zend_Pdf_Page
*/
public function attachAnnotation(Zend_Pdf_Annotation $annotation)
{
$annotationDictionary = $annotation->getResource();
if (!$annotationDictionary instanceof Zend_Pdf_Element_Object &&
!$annotationDictionary instanceof Zend_Pdf_Element_Reference) {
$annotationDictionary = $this->_objFactory->newObject($annotationDictionary);
}
if ($this->_pageDictionary->Annots === null) {
$this->_pageDictionary->touch();
$this->_pageDictionary->Annots = new Zend_Pdf_Element_Array();
} else {
$this->_pageDictionary->Annots->touch();
}
$this->_pageDictionary->Annots->items[] = $annotationDictionary;
$annotationDictionary->touch();
$annotationDictionary->P = $this->_pageDictionary;
return $this;
}
/**
* Return the height of this page in points.
*
* @return float
*/
public function getHeight()
{
return $this->_pageDictionary->MediaBox->items[3]->value -
$this->_pageDictionary->MediaBox->items[1]->value;
}
/**
* Return the width of this page in points.
*
* @return float
*/
public function getWidth()
{
return $this->_pageDictionary->MediaBox->items[2]->value -
$this->_pageDictionary->MediaBox->items[0]->value;
}
/**
* Close the path by drawing a straight line back to it's beginning.
*
* @throws Zend_Pdf_Exception - if a path hasn't been started with pathMove()
* @return Zend_Pdf_Page
*/
public function pathClose()
{
/** @todo implementation */
return $this;
}
/**
* Continue the open path in a straight line to the specified position.
*
* @param float $x - the X co-ordinate to move to
* @param float $y - the Y co-ordinate to move to
* @return Zend_Pdf_Page
*/
public function pathLine($x, $y)
{
/** @todo implementation */
return $this;
}
/**
* Start a new path at the specified position. If a path has already been started,
* move the cursor without drawing a line.
*
* @param float $x - the X co-ordinate to move to
* @param float $y - the Y co-ordinate to move to
* @return Zend_Pdf_Page
*/
public function pathMove($x, $y)
{
/** @todo implementation */
return $this;
}
/**
* Writes the raw data to the page's content stream.
*
* Be sure to consult the PDF reference to ensure your syntax is correct. No
* attempt is made to ensure the validity of the stream data.
*
* @param string $data
* @param string $procSet (optional) Name of ProcSet to add.
* @return Zend_Pdf_Page
*/
public function rawWrite($data, $procSet = null)
{
if (! empty($procSet)) {
$this->_addProcSet($procSet);
}
$this->_contents .= $data;
return $this;
}
/**
* Rotate the page.
*
* @param float $x - the X co-ordinate of rotation point
* @param float $y - the Y co-ordinate of rotation point
* @param float $angle - rotation angle
* @return Zend_Pdf_Page
*/
public function rotate($x, $y, $angle)
{
$cos = new Zend_Pdf_Element_Numeric(cos($angle));
$sin = new Zend_Pdf_Element_Numeric(sin($angle));
$mSin = new Zend_Pdf_Element_Numeric(-$sin->value);
$xObj = new Zend_Pdf_Element_Numeric($x);
$yObj = new Zend_Pdf_Element_Numeric($y);
$mXObj = new Zend_Pdf_Element_Numeric(-$x);
$mYObj = new Zend_Pdf_Element_Numeric(-$y);
$this->_addProcSet('PDF');
$this->_contents .= '1 0 0 1 ' . $xObj->toString() . ' ' . $yObj->toString() . " cm\n"
. $cos->toString() . ' ' . $sin->toString() . ' ' . $mSin->toString() . ' ' . $cos->toString() . " 0 0 cm\n"
. '1 0 0 1 ' . $mXObj->toString() . ' ' . $mYObj->toString() . " cm\n";
return $this;
}
/**
* Scale coordination system.
*
* @param float $xScale - X dimention scale factor
* @param float $yScale - Y dimention scale factor
* @return Zend_Pdf_Page
*/
public function scale($xScale, $yScale)
{
$xScaleObj = new Zend_Pdf_Element_Numeric($xScale);
$yScaleObj = new Zend_Pdf_Element_Numeric($yScale);
$this->_addProcSet('PDF');
$this->_contents .= $xScaleObj->toString() . ' 0 0 ' . $yScaleObj->toString() . " 0 0 cm\n";
return $this;
}
/**
* Translate coordination system.
*
* @param float $xShift - X coordinate shift
* @param float $yShift - Y coordinate shift
* @return Zend_Pdf_Page
*/
public function translate($xShift, $yShift)
{
$xShiftObj = new Zend_Pdf_Element_Numeric($xShift);
$yShiftObj = new Zend_Pdf_Element_Numeric($yShift);
$this->_addProcSet('PDF');
$this->_contents .= '1 0 0 1 ' . $xShiftObj->toString() . ' ' . $yShiftObj->toString() . " cm\n";
return $this;
}
/**
* Translate coordination system.
*
* @param float $x - the X co-ordinate of axis skew point
* @param float $y - the Y co-ordinate of axis skew point
* @param float $xAngle - X axis skew angle
* @param float $yAngle - Y axis skew angle
* @return Zend_Pdf_Page
*/
public function skew($x, $y, $xAngle, $yAngle)
{
$tanXObj = new Zend_Pdf_Element_Numeric(tan($xAngle));
$tanYObj = new Zend_Pdf_Element_Numeric(-tan($yAngle));
$xObj = new Zend_Pdf_Element_Numeric($x);
$yObj = new Zend_Pdf_Element_Numeric($y);
$mXObj = new Zend_Pdf_Element_Numeric(-$x);
$mYObj = new Zend_Pdf_Element_Numeric(-$y);
$this->_addProcSet('PDF');
$this->_contents .= '1 0 0 1 ' . $xObj->toString() . ' ' . $yObj->toString() . " cm\n"
. '1 ' . $tanXObj->toString() . ' ' . $tanYObj->toString() . " 1 0 0 cm\n"
. '1 0 0 1 ' . $mXObj->toString() . ' ' . $mYObj->toString() . " cm\n";
return $this;
}
}
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