/**
* Object constructor.
*
* If resource is not a Zend_Pdf_Element object, then stream object with specified value is
* generated.
*
* @param Zend_Pdf_Element|string $resource
*/
public function __construct($resource)
{
$this->_objectFactory = Zend_Pdf_ElementFactory::createFactory(1);
if ($resource instanceof Zend_Pdf_Element) {
$this->_resource = $this->_objectFactory->newObject($resource);
} else {
$this->_resource = $this->_objectFactory->newStreamObject($resource);
}
}
/**
* Object constructor.
*
* If resource is not a Zend_Pdf_Element object, then stream object with specified value is
* generated.
*
* @param Zend_Pdf_Element|string $resource
*/
public function __construct($resource)
{
if ($resource instanceof Zend_Pdf_Element_Object) {
$this->_objectFactory = $resource->getFactory();
$this->_resource = $resource;
return;
}
require_once 'Zend/Pdf/ElementFactory.php';
$this->_objectFactory = Zend_Pdf_ElementFactory::createFactory(1);
if ($resource instanceof Zend_Pdf_Element) {
$this->_resource = $this->_objectFactory->newObject($resource);
} else {
$this->_resource = $this->_objectFactory->newStreamObject($resource);
}
}
/**
* Object constructor.
*
* @param Zend_Pdf_Element_Object $extGStateObject
* @throws Zend_Pdf_Exception
*/
public function __construct(Zend_Pdf_Element_Object $extGStateObject = null)
{
if ($extGStateObject == null) {
// Create new Graphics State object
require_once 'Zend/Pdf/ElementFactory.php';
$factory = Zend_Pdf_ElementFactory::createFactory(1);
$gsDictionary = new Zend_Pdf_Element_Dictionary();
$gsDictionary->Type = new Zend_Pdf_Element_Name('ExtGState');
$extGStateObject = $factory->newObject($gsDictionary);
}
if ($extGStateObject->getType() != Zend_Pdf_Element::TYPE_DICTIONARY) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Graphics state PDF object must be a dictionary');
}
parent::__construct($gsDictionary);
}
/**
* 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" or "x:y:" form
}
$pageDim = explode(':', $param1);
if (count($pageDim) == 2 || 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();
}
/**
* 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;
$this->_attached = true;
return;
} else {
if ($param1 instanceof Zend_Pdf_Page && $param2 === null && $param3 === null) {
/** @todo implementation */
throw new Zend_Pdf_Exception('Not implemented yet.');
} else {
if (is_string($param1) && ($param2 === null || $param2 instanceof Zend_Pdf_ElementFactory_Interface) && $param3 === null) {
$this->_objFactory = $param2 !== null ? $param2 : Zend_Pdf_ElementFactory::createFactory(1);
$this->_attached = false;
switch (strtolower($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 = $pageDim[1];
} else {
/**
* @todo support of user defined pagesize notations, like:
* "210x297mm", "595x842", "8.5x11in", "612x792"
*/
throw new Zend_Pdf_Exception('Wrong pagesize notation.');
}
/**
* @todo support of pagesize recalculation to "default user space units"
*/
} else {
if (is_numeric($param1) && is_numeric($param2) && ($param3 === null || $param3 instanceof Zend_Pdf_ElementFactory_Interface)) {
$this->_objFactory = $param3 !== null ? $param3 : Zend_Pdf_ElementFactory::createFactory(1);
$this->_attached = false;
$pageWidth = $param1;
$pageHeight = $param2;
} else {
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');
$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();
}
/**
* Creates or loads PDF document.
*
* If $source is null, then it creates a new document.
*
* If $source is a string and $load is false, then it loads document
* from a binary string.
*
* If $source is a string and $load is true, then it loads document
* from a file.
* $revision used to roll back document to specified version
* (0 - current version, 1 - previous version, 2 - ...)
*
* @param string $source - PDF file to load
* @param integer $revision
* @throws Zend_Pdf_Exception
* @return Zend_Pdf
*/
public function __construct($source = null, $revision = null, $load = false)
{
require_once 'Zend/Pdf/ElementFactory.php';
$this->_objFactory = Zend_Pdf_ElementFactory::createFactory(1);
if ($source !== null) {
require_once 'Zend/Pdf/Parser.php';
$this->_parser = new Zend_Pdf_Parser($source, $this->_objFactory, $load);
$this->_pdfHeaderVersion = $this->_parser->getPDFVersion();
$this->_trailer = $this->_parser->getTrailer();
if ($this->_trailer->Encrypt !== null) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Encrypted document modification is not supported');
}
if ($revision !== null) {
$this->rollback($revision);
} else {
$this->_loadPages($this->_trailer->Root->Pages);
}
$this->_loadNamedDestinations($this->_trailer->Root, $this->_parser->getPDFVersion());
$this->_loadOutlines($this->_trailer->Root);
if ($this->_trailer->Info !== null) {
$this->properties = $this->_trailer->Info->toPhp();
if (isset($this->properties['Trapped'])) {
switch ($this->properties['Trapped']) {
case 'True':
$this->properties['Trapped'] = true;
break;
case 'False':
$this->properties['Trapped'] = false;
break;
case 'Unknown':
$this->properties['Trapped'] = null;
break;
default:
// Wrong property value
// Do nothing
break;
}
}
$this->_originalProperties = $this->properties;
}
$this->_isNewDocument = false;
} else {
$this->_pdfHeaderVersion = Zend_Pdf::PDF_VERSION;
$trailerDictionary = new Zend_Pdf_Element_Dictionary();
/**
* Document id
*/
$docId = md5(uniqid(rand(), true)); // 32 byte (128 bit) identifier
$docIdLow = substr($docId, 0, 16); // first 16 bytes
$docIdHigh = substr($docId, 16, 16); // second 16 bytes
$trailerDictionary->ID = new Zend_Pdf_Element_Array();
$trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdLow);
$trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdHigh);
$trailerDictionary->Size = new Zend_Pdf_Element_Numeric(0);
require_once 'Zend/Pdf/Trailer/Generator.php';
$this->_trailer = new Zend_Pdf_Trailer_Generator($trailerDictionary);
/**
* Document catalog indirect object.
*/
$docCatalog = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
$docCatalog->Type = new Zend_Pdf_Element_Name('Catalog');
$docCatalog->Version = new Zend_Pdf_Element_Name(Zend_Pdf::PDF_VERSION);
$this->_trailer->Root = $docCatalog;
/**
* Pages container
*/
$docPages = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
$docPages->Type = new Zend_Pdf_Element_Name('Pages');
$docPages->Kids = new Zend_Pdf_Element_Array();
$docPages->Count = new Zend_Pdf_Element_Numeric(0);
$docCatalog->Pages = $docPages;
}
}
/**
* Object constructor
*
* @param string $imageFileName
* @throws Zend_Pdf_Exception
* @todo Add compression conversions to support compression strategys other than PNG_COMPRESSION_DEFAULT_STRATEGY.
* @todo Add pre-compression filtering.
* @todo Add interlaced image handling.
* @todo Add support for 16-bit images. Requires PDF version bump to 1.5 at least.
* @todo Add processing for all PNG chunks defined in the spec. gAMA etc.
* @todo Fix tRNS chunk support for Indexed Images to a SMask.
*/
public function __construct($imageFileName)
{
if (($imageFile = @fopen($imageFileName, 'rb')) === false) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception("Can not open '{$imageFileName}' file for reading.");
}
parent::__construct();
//Check if the file is a PNG
fseek($imageFile, 1, SEEK_CUR);
//First signature byte (%)
if ('PNG' != fread($imageFile, 3)) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Image is not a PNG');
}
fseek($imageFile, 12, SEEK_CUR);
//Signature bytes (Includes the IHDR chunk) IHDR processed linerarly because it doesnt contain a variable chunk length
$wtmp = unpack('Ni', fread($imageFile, 4));
//Unpack a 4-Byte Long
$width = $wtmp['i'];
$htmp = unpack('Ni', fread($imageFile, 4));
$height = $htmp['i'];
$bits = ord(fread($imageFile, 1));
//Higher than 8 bit depths are only supported in later versions of PDF.
$color = ord(fread($imageFile, 1));
$compression = ord(fread($imageFile, 1));
$prefilter = ord(fread($imageFile, 1));
if (($interlacing = ord(fread($imageFile, 1))) != Zend_Pdf_Resource_Image_Png::PNG_INTERLACING_DISABLED) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception("Only non-interlaced images are currently supported.");
}
$this->_width = $width;
$this->_height = $height;
$this->_imageProperties = array();
$this->_imageProperties['bitDepth'] = $bits;
$this->_imageProperties['pngColorType'] = $color;
$this->_imageProperties['pngFilterType'] = $prefilter;
$this->_imageProperties['pngCompressionType'] = $compression;
$this->_imageProperties['pngInterlacingType'] = $interlacing;
fseek($imageFile, 4, SEEK_CUR);
//4 Byte Ending Sequence
$imageData = '';
/*
* The following loop processes PNG chunks. 4 Byte Longs are packed first give the chunk length
* followed by the chunk signature, a four byte code. IDAT and IEND are manditory in any PNG.
*/
while (!feof($imageFile)) {
$chunkLengthBytes = fread($imageFile, 4);
if ($chunkLengthBytes === false) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Error ocuured while image file reading.');
}
$chunkLengthtmp = unpack('Ni', $chunkLengthBytes);
$chunkLength = $chunkLengthtmp['i'];
$chunkType = fread($imageFile, 4);
switch ($chunkType) {
case 'IDAT':
//Image Data
/*
* Reads the actual image data from the PNG file. Since we know at this point that the compression
* strategy is the default strategy, we also know that this data is Zip compressed. We will either copy
* the data directly to the PDF and provide the correct FlateDecode predictor, or decompress the data
* decode the filters and output the data as a raw pixel map.
*/
$imageData .= fread($imageFile, $chunkLength);
fseek($imageFile, 4, SEEK_CUR);
break;
case 'PLTE':
//Palette
$paletteData = fread($imageFile, $chunkLength);
fseek($imageFile, 4, SEEK_CUR);
break;
case 'tRNS':
//Basic (non-alpha channel) transparency.
$trnsData = fread($imageFile, $chunkLength);
switch ($color) {
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY:
$baseColor = ord(substr($trnsData, 1, 1));
$transparencyData = array(new Zend_Pdf_Element_Numeric($baseColor), new Zend_Pdf_Element_Numeric($baseColor));
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB:
$red = ord(substr($trnsData, 1, 1));
$green = ord(substr($trnsData, 3, 1));
$blue = ord(substr($trnsData, 5, 1));
$transparencyData = array(new Zend_Pdf_Element_Numeric($red), new Zend_Pdf_Element_Numeric($red), new Zend_Pdf_Element_Numeric($green), new Zend_Pdf_Element_Numeric($green), new Zend_Pdf_Element_Numeric($blue), new Zend_Pdf_Element_Numeric($blue));
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_INDEXED:
//Find the first transparent color in the index, we will mask that. (This is a bit of a hack. This should be a SMask and mask all entries values).
if (($trnsIdx = strpos($trnsData, "")) !== false) {
$transparencyData = array(new Zend_Pdf_Element_Numeric($trnsIdx), new Zend_Pdf_Element_Numeric($trnsIdx));
}
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY_ALPHA:
// Fall through to the next case
// Fall through to the next case
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB_ALPHA:
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception("tRNS chunk illegal for Alpha Channel Images");
break;
}
fseek($imageFile, 4, SEEK_CUR);
//4 Byte Ending Sequence
break;
case 'IEND':
break 2;
//End the loop too
//End the loop too
default:
fseek($imageFile, $chunkLength + 4, SEEK_CUR);
//Skip the section
break;
}
}
fclose($imageFile);
$compressed = true;
$imageDataTmp = '';
$smaskData = '';
switch ($color) {
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB:
$colorSpace = new Zend_Pdf_Element_Name('DeviceRGB');
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY:
$colorSpace = new Zend_Pdf_Element_Name('DeviceGray');
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_INDEXED:
if (empty($paletteData)) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception("PNG Corruption: No palette data read for indexed type PNG.");
}
$colorSpace = new Zend_Pdf_Element_Array();
$colorSpace->items[] = new Zend_Pdf_Element_Name('Indexed');
$colorSpace->items[] = new Zend_Pdf_Element_Name('DeviceRGB');
$colorSpace->items[] = new Zend_Pdf_Element_Numeric(strlen($paletteData) / 3 - 1);
$paletteObject = $this->_objectFactory->newObject(new Zend_Pdf_Element_String_Binary($paletteData));
$colorSpace->items[] = $paletteObject;
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY_ALPHA:
/*
* To decode PNG's with alpha data we must create two images from one. One image will contain the Gray data
* the other will contain the Gray transparency overlay data. The former will become the object data and the latter
* will become the Shadow Mask (SMask).
*/
if ($bits > 8) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception("Alpha PNGs with bit depth > 8 are not yet supported");
}
$colorSpace = new Zend_Pdf_Element_Name('DeviceGray');
require_once 'Zend/Pdf/ElementFactory.php';
$decodingObjFactory = Zend_Pdf_ElementFactory::createFactory(1);
$decodingStream = $decodingObjFactory->newStreamObject($imageData);
$decodingStream->dictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
$decodingStream->dictionary->DecodeParms = new Zend_Pdf_Element_Dictionary();
$decodingStream->dictionary->DecodeParms->Predictor = new Zend_Pdf_Element_Numeric(15);
$decodingStream->dictionary->DecodeParms->Columns = new Zend_Pdf_Element_Numeric($width);
$decodingStream->dictionary->DecodeParms->Colors = new Zend_Pdf_Element_Numeric(2);
//GreyAlpha
$decodingStream->dictionary->DecodeParms->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$decodingStream->skipFilters();
$pngDataRawDecoded = $decodingStream->value;
//Iterate every pixel and copy out gray data and alpha channel (this will be slow)
for ($pixel = 0, $pixelcount = $width * $height; $pixel < $pixelcount; $pixel++) {
$imageDataTmp .= $pngDataRawDecoded[$pixel * 2];
$smaskData .= $pngDataRawDecoded[$pixel * 2 + 1];
}
$compressed = false;
$imageData = $imageDataTmp;
//Overwrite image data with the gray channel without alpha
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB_ALPHA:
/*
* To decode PNG's with alpha data we must create two images from one. One image will contain the RGB data
* the other will contain the Gray transparency overlay data. The former will become the object data and the latter
* will become the Shadow Mask (SMask).
*/
if ($bits > 8) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception("Alpha PNGs with bit depth > 8 are not yet supported");
}
$colorSpace = new Zend_Pdf_Element_Name('DeviceRGB');
require_once 'Zend/Pdf/ElementFactory.php';
$decodingObjFactory = Zend_Pdf_ElementFactory::createFactory(1);
$decodingStream = $decodingObjFactory->newStreamObject($imageData);
$decodingStream->dictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
$decodingStream->dictionary->DecodeParms = new Zend_Pdf_Element_Dictionary();
$decodingStream->dictionary->DecodeParms->Predictor = new Zend_Pdf_Element_Numeric(15);
$decodingStream->dictionary->DecodeParms->Columns = new Zend_Pdf_Element_Numeric($width);
$decodingStream->dictionary->DecodeParms->Colors = new Zend_Pdf_Element_Numeric(4);
//RGBA
$decodingStream->dictionary->DecodeParms->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$decodingStream->skipFilters();
$pngDataRawDecoded = $decodingStream->value;
//Iterate every pixel and copy out rgb data and alpha channel (this will be slow)
for ($pixel = 0, $pixelcount = $width * $height; $pixel < $pixelcount; $pixel++) {
$imageDataTmp .= $pngDataRawDecoded[$pixel * 4 + 0] . $pngDataRawDecoded[$pixel * 4 + 1] . $pngDataRawDecoded[$pixel * 4 + 2];
$smaskData .= $pngDataRawDecoded[$pixel * 4 + 3];
}
$compressed = false;
$imageData = $imageDataTmp;
//Overwrite image data with the RGB channel without alpha
break;
default:
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception("PNG Corruption: Invalid color space.");
}
if (empty($imageData)) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception("Corrupt PNG Image. Mandatory IDAT chunk not found.");
}
$imageDictionary = $this->_resource->dictionary;
if (!empty($smaskData)) {
/*
* Includes the Alpha transparency data as a Gray Image, then assigns the image as the Shadow Mask for the main image data.
*/
$smaskStream = $this->_objectFactory->newStreamObject($smaskData);
$smaskStream->dictionary->Type = new Zend_Pdf_Element_Name('XObject');
$smaskStream->dictionary->Subtype = new Zend_Pdf_Element_Name('Image');
$smaskStream->dictionary->Width = new Zend_Pdf_Element_Numeric($width);
$smaskStream->dictionary->Height = new Zend_Pdf_Element_Numeric($height);
$smaskStream->dictionary->ColorSpace = new Zend_Pdf_Element_Name('DeviceGray');
$smaskStream->dictionary->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$imageDictionary->SMask = $smaskStream;
// Encode stream with FlateDecode filter
$smaskStreamDecodeParms = array();
$smaskStreamDecodeParms['Predictor'] = new Zend_Pdf_Element_Numeric(15);
$smaskStreamDecodeParms['Columns'] = new Zend_Pdf_Element_Numeric($width);
$smaskStreamDecodeParms['Colors'] = new Zend_Pdf_Element_Numeric(1);
$smaskStreamDecodeParms['BitsPerComponent'] = new Zend_Pdf_Element_Numeric(8);
$smaskStream->dictionary->DecodeParms = new Zend_Pdf_Element_Dictionary($smaskStreamDecodeParms);
$smaskStream->dictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
}
if (!empty($transparencyData)) {
//This is experimental and not properly tested.
$imageDictionary->Mask = new Zend_Pdf_Element_Array($transparencyData);
}
$imageDictionary->Width = new Zend_Pdf_Element_Numeric($width);
$imageDictionary->Height = new Zend_Pdf_Element_Numeric($height);
$imageDictionary->ColorSpace = $colorSpace;
$imageDictionary->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$imageDictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
$decodeParms = array();
$decodeParms['Predictor'] = new Zend_Pdf_Element_Numeric(15);
// Optimal prediction
$decodeParms['Columns'] = new Zend_Pdf_Element_Numeric($width);
$decodeParms['Colors'] = new Zend_Pdf_Element_Numeric($color == Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB || $color == Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB_ALPHA ? 3 : 1);
$decodeParms['BitsPerComponent'] = new Zend_Pdf_Element_Numeric($bits);
$imageDictionary->DecodeParms = new Zend_Pdf_Element_Dictionary($decodeParms);
//Include only the image IDAT section data.
$this->_resource->value = $imageData;
//Skip double compression
if ($compressed) {
$this->_resource->skipFilters();
}
}
/**
* Clone page, extract it and dependent objects from the current document,
* so it can be used within other docs.
*/
public function __clone()
{
$factory = Zend_Pdf_ElementFactory::createFactory(1);
$processed = array();
// Clone dictionary object.
// Do it explicitly to prevent sharing page attributes between different
// results of clonePage() operation (other resources are still shared)
$dictionary = new Zend_Pdf_Element_Dictionary();
foreach ($this->_dictionary->getKeys() as $key) {
$dictionary->{$key} = $this->_dictionary->{$key}->makeClone($factory->getFactory(), $processed, Zend_Pdf_Element::CLONE_MODE_SKIP_PAGES);
}
$this->_dictionary = $factory->newObject($dictionary);
$this->_objFactory = $factory;
$this->_attached = false;
$this->_style = null;
$this->_font = null;
}
/**
* Object constructor.
*/
public function __construct()
{
$this->_factory = Zend_Pdf_ElementFactory::createFactory(1);
$this->_processed = array();
}
/**
* Creates or loads PDF document.
*
* If $source is null, then it creates a new document.
*
* If $source is a string and $load is false, then it loads document
* from a binary string.
*
* If $source is a string and $load is true, then it loads document
* from a file.
* $revision used to roll back document to specified version
* (0 - currtent version, 1 - previous version, 2 - ...)
*
* @param string $source - PDF file to load
* @param integer $revision
* @throws Zend_Pdf_Exception
* @return Zend_Pdf
*/
public function __construct($source = null, $revision = null, $load = false)
{
$this->_objFactory = Zend_Pdf_ElementFactory::createFactory(1);
if ($source !== null) {
$this->_parser = new Zend_Pdf_Parser($source, $this->_objFactory, $load);
$this->_trailer = $this->_parser->getTrailer();
if ($revision !== null) {
$this->rollback($revision);
} else {
$this->_loadPages($this->_trailer->Root->Pages);
}
if ($this->_trailer->Info !== null) {
foreach ($this->_trailer->Info->getKeys() as $key) {
$this->properties[$key] = $this->_trailer->Info->{$key}->value;
}
if (isset($this->properties['Trapped'])) {
switch ($this->properties['Trapped']) {
case 'True':
$this->properties['Trapped'] = true;
break;
case 'False':
$this->properties['Trapped'] = false;
break;
case 'Unknown':
$this->properties['Trapped'] = null;
break;
default:
// Wrong property value
// Do nothing
break;
}
}
$this->_originalProperties = $this->properties;
}
} else {
$trailerDictionary = new Zend_Pdf_Element_Dictionary();
/**
* Document id
*/
$docId = md5(uniqid(rand(), true));
// 32 byte (128 bit) identifier
$docIdLow = substr($docId, 0, 16);
// first 16 bytes
$docIdHigh = substr($docId, 16, 16);
// second 16 bytes
$trailerDictionary->ID = new Zend_Pdf_Element_Array();
$trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdLow);
$trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdHigh);
$trailerDictionary->Size = new Zend_Pdf_Element_Numeric(0);
$this->_trailer = new Zend_Pdf_Trailer_Generator($trailerDictionary);
/**
* Document catalog indirect object.
*/
$docCatalog = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
$docCatalog->Type = new Zend_Pdf_Element_Name('Catalog');
$docCatalog->Version = new Zend_Pdf_Element_Name(Zend_Pdf::PDF_VERSION);
$this->_trailer->Root = $docCatalog;
/**
* Pages container
*/
$docPages = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
$docPages->Type = new Zend_Pdf_Element_Name('Pages');
$docPages->Kids = new Zend_Pdf_Element_Array();
$docPages->Count = new Zend_Pdf_Element_Numeric(0);
$docCatalog->Pages = $docPages;
}
}
/**
* Creates or loads PDF document.
*
* If $source is null, then it creates a new document.
*
* If $source is a string and $load is false, then it loads document
* from a binary string.
*
* If $source is a string and $load is true, then it loads document
* from a file.
* $revision used to roll back document to specified version
* (0 - currtent version, 1 - previous version, 2 - ...)
*
* @param string $source - PDF file to load
* @param integer $revision
* @throws Zend_Pdf_Exception
* @return Zend_Pdf
*/
public function __construct($source = null, $revision = null, $load = false)
{
$this->_objFactory = Zend_Pdf_ElementFactory::createFactory(1);
if ($source !== null) {
$this->_parser = new Zend_Pdf_Parser($source, $this->_objFactory, $load);
$this->_trailer = $this->_parser->getTrailer();
if ($revision !== null) {
$this->rollback($revision);
} else {
$this->_loadPages($this->_trailer->Root->Pages);
}
} else {
$trailerDictionary = new Zend_Pdf_Element_Dictionary();
/**
* Document id
*/
$docId = md5(uniqid(rand(), true));
// 32 byte (128 bit) identifier
$docIdLow = substr($docId, 0, 16);
// first 16 bytes
$docIdHigh = substr($docId, 16, 16);
// second 16 bytes
$trailerDictionary->ID = new Zend_Pdf_Element_Array();
$trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdLow);
$trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdHigh);
$trailerDictionary->Size = new Zend_Pdf_Element_Numeric(0);
$this->_trailer = new Zend_Pdf_Trailer_Generator($trailerDictionary);
/**
* Document catalog indirect object.
*/
$docCatalog = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
$docCatalog->Type = new Zend_Pdf_Element_Name('Catalog');
$docCatalog->Version = new Zend_Pdf_Element_Name(Zend_Pdf::PDF_VERSION);
$this->_trailer->Root = $docCatalog;
/**
* Pages container
*/
$docPages = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
$docPages->Type = new Zend_Pdf_Element_Name('Pages');
$docPages->Kids = new Zend_Pdf_Element_Array();
$docPages->Count = new Zend_Pdf_Element_Numeric(0);
$docCatalog->Pages = $docPages;
}
}
public function __construct($imageFileName)
{
if (($imageFile = @fopen($imageFileName, 'rb')) === false) {
throw new Zend_Pdf_Exception("Can not open '{$imageFileName}' file for reading.");
}
parent::__construct();
fseek($imageFile, 1, SEEK_CUR);
if ('PNG' != fread($imageFile, 3)) {
throw new Zend_Pdf_Exception('Image is not a PNG');
}
fseek($imageFile, 12, SEEK_CUR);
$wtmp = unpack('Ni', fread($imageFile, 4));
$width = $wtmp['i'];
$htmp = unpack('Ni', fread($imageFile, 4));
$height = $htmp['i'];
$bits = ord(fread($imageFile, 1));
$color = ord(fread($imageFile, 1));
$compression = ord(fread($imageFile, 1));
$prefilter = ord(fread($imageFile, 1));
if (($interlacing = ord(fread($imageFile, 1))) != Zend_Pdf_Resource_Image_Png::PNG_INTERLACING_DISABLED) {
throw new Zend_Pdf_Exception("Only non-interlaced images are currently supported.");
}
$this->_width = $width;
$this->_height = $height;
$this->_imageProperties = array();
$this->_imageProperties['bitDepth'] = $bits;
$this->_imageProperties['pngColorType'] = $color;
$this->_imageProperties['pngFilterType'] = $prefilter;
$this->_imageProperties['pngCompressionType'] = $compression;
$this->_imageProperties['pngInterlacingType'] = $interlacing;
fseek($imageFile, 4, SEEK_CUR);
$imageData = '';
while (!feof($imageFile)) {
$chunkLengthBytes = fread($imageFile, 4);
if ($chunkLengthBytes === false) {
throw new Zend_Pdf_Exception('Error ocuured while image file reading.');
}
$chunkLengthtmp = unpack('Ni', $chunkLengthBytes);
$chunkLength = $chunkLengthtmp['i'];
$chunkType = fread($imageFile, 4);
switch ($chunkType) {
case 'IDAT':
$imageData .= fread($imageFile, $chunkLength);
fseek($imageFile, 4, SEEK_CUR);
break;
case 'PLTE':
$paletteData = fread($imageFile, $chunkLength);
fseek($imageFile, 4, SEEK_CUR);
break;
case 'tRNS':
$trnsData = fread($imageFile, $chunkLength);
switch ($color) {
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY:
$baseColor = ord(substr($trnsData, 1, 1));
$transparencyData = array(new Zend_Pdf_Element_Numeric($baseColor), new Zend_Pdf_Element_Numeric($baseColor));
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB:
$red = ord(substr($trnsData, 1, 1));
$green = ord(substr($trnsData, 3, 1));
$blue = ord(substr($trnsData, 5, 1));
$transparencyData = array(new Zend_Pdf_Element_Numeric($red), new Zend_Pdf_Element_Numeric($red), new Zend_Pdf_Element_Numeric($green), new Zend_Pdf_Element_Numeric($green), new Zend_Pdf_Element_Numeric($blue), new Zend_Pdf_Element_Numeric($blue));
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_INDEXED:
if (($trnsIdx = strpos($trnsData, "")) !== false) {
$transparencyData = array(new Zend_Pdf_Element_Numeric($trnsIdx), new Zend_Pdf_Element_Numeric($trnsIdx));
}
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY_ALPHA:
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB_ALPHA:
throw new Zend_Pdf_Exception("tRNS chunk illegal for Alpha Channel Images");
break;
}
fseek($imageFile, 4, SEEK_CUR);
break;
case 'IEND':
break 2;
default:
fseek($imageFile, $chunkLength + 4, SEEK_CUR);
break;
}
}
fclose($imageFile);
$compressed = true;
$imageDataTmp = '';
$smaskData = '';
switch ($color) {
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB:
$colorSpace = new Zend_Pdf_Element_Name('DeviceRGB');
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY:
$colorSpace = new Zend_Pdf_Element_Name('DeviceGray');
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_INDEXED:
if (empty($paletteData)) {
throw new Zend_Pdf_Exception("PNG Corruption: No palette data read for indexed type PNG.");
}
$colorSpace = new Zend_Pdf_Element_Array();
$colorSpace->items[] = new Zend_Pdf_Element_Name('Indexed');
$colorSpace->items[] = new Zend_Pdf_Element_Name('DeviceRGB');
$colorSpace->items[] = new Zend_Pdf_Element_Numeric(strlen($paletteData) / 3 - 1);
$paletteObject = $this->_objectFactory->newObject(new Zend_Pdf_Element_String_Binary($paletteData));
$colorSpace->items[] = $paletteObject;
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY_ALPHA:
if ($bits > 8) {
throw new Zend_Pdf_Exception("Alpha PNGs with bit depth > 8 are not yet supported");
}
$colorSpace = new Zend_Pdf_Element_Name('DeviceGray');
$decodingObjFactory = Zend_Pdf_ElementFactory::createFactory(1);
$decodingStream = $decodingObjFactory->newStreamObject($imageData);
$decodingStream->dictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
$decodingStream->dictionary->DecodeParms = new Zend_Pdf_Element_Dictionary();
$decodingStream->dictionary->DecodeParms->Predictor = new Zend_Pdf_Element_Numeric(15);
$decodingStream->dictionary->DecodeParms->Columns = new Zend_Pdf_Element_Numeric($width);
$decodingStream->dictionary->DecodeParms->Colors = new Zend_Pdf_Element_Numeric(2);
$decodingStream->dictionary->DecodeParms->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$decodingStream->skipFilters();
$pngDataRawDecoded = $decodingStream->value;
for ($pixel = 0, $pixelcount = $width * $height; $pixel < $pixelcount; $pixel++) {
$imageDataTmp .= $pngDataRawDecoded[$pixel * 2];
$smaskData .= $pngDataRawDecoded[$pixel * 2 + 1];
}
$compressed = false;
$imageData = $imageDataTmp;
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB_ALPHA:
if ($bits > 8) {
throw new Zend_Pdf_Exception("Alpha PNGs with bit depth > 8 are not yet supported");
}
$colorSpace = new Zend_Pdf_Element_Name('DeviceRGB');
$decodingObjFactory = Zend_Pdf_ElementFactory::createFactory(1);
$decodingStream = $decodingObjFactory->newStreamObject($imageData);
$decodingStream->dictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
$decodingStream->dictionary->DecodeParms = new Zend_Pdf_Element_Dictionary();
$decodingStream->dictionary->DecodeParms->Predictor = new Zend_Pdf_Element_Numeric(15);
$decodingStream->dictionary->DecodeParms->Columns = new Zend_Pdf_Element_Numeric($width);
$decodingStream->dictionary->DecodeParms->Colors = new Zend_Pdf_Element_Numeric(4);
$decodingStream->dictionary->DecodeParms->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$decodingStream->skipFilters();
$pngDataRawDecoded = $decodingStream->value;
for ($pixel = 0, $pixelcount = $width * $height; $pixel < $pixelcount; $pixel++) {
$imageDataTmp .= $pngDataRawDecoded[$pixel * 4 + 0] . $pngDataRawDecoded[$pixel * 4 + 1] . $pngDataRawDecoded[$pixel * 4 + 2];
$smaskData .= $pngDataRawDecoded[$pixel * 4 + 3];
}
$compressed = false;
$imageData = $imageDataTmp;
break;
default:
throw new Zend_Pdf_Exception("PNG Corruption: Invalid color space.");
}
if (empty($imageData)) {
throw new Zend_Pdf_Exception("Corrupt PNG Image. Mandatory IDAT chunk not found.");
}
$imageDictionary = $this->_resource->dictionary;
if (!empty($smaskData)) {
$smaskStream = $this->_objectFactory->newStreamObject($smaskData);
$smaskStream->dictionary->Type = new Zend_Pdf_Element_Name('XObject');
$smaskStream->dictionary->Subtype = new Zend_Pdf_Element_Name('Image');
$smaskStream->dictionary->Width = new Zend_Pdf_Element_Numeric($width);
$smaskStream->dictionary->Height = new Zend_Pdf_Element_Numeric($height);
$smaskStream->dictionary->ColorSpace = new Zend_Pdf_Element_Name('DeviceGray');
$smaskStream->dictionary->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$imageDictionary->SMask = $smaskStream;
$smaskStreamDecodeParms = array();
$smaskStreamDecodeParms['Predictor'] = new Zend_Pdf_Element_Numeric(15);
$smaskStreamDecodeParms['Columns'] = new Zend_Pdf_Element_Numeric($width);
$smaskStreamDecodeParms['Colors'] = new Zend_Pdf_Element_Numeric(1);
$smaskStreamDecodeParms['BitsPerComponent'] = new Zend_Pdf_Element_Numeric(8);
$smaskStream->dictionary->DecodeParms = new Zend_Pdf_Element_Dictionary($smaskStreamDecodeParms);
$smaskStream->dictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
}
if (!empty($transparencyData)) {
$imageDictionary->Mask = new Zend_Pdf_Element_Array($transparencyData);
}
$imageDictionary->Width = new Zend_Pdf_Element_Numeric($width);
$imageDictionary->Height = new Zend_Pdf_Element_Numeric($height);
$imageDictionary->ColorSpace = $colorSpace;
$imageDictionary->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$imageDictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
$decodeParms = array();
$decodeParms['Predictor'] = new Zend_Pdf_Element_Numeric(15);
$decodeParms['Columns'] = new Zend_Pdf_Element_Numeric($width);
$decodeParms['Colors'] = new Zend_Pdf_Element_Numeric($color == Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB || $color == Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB_ALPHA ? 3 : 1);
$decodeParms['BitsPerComponent'] = new Zend_Pdf_Element_Numeric($bits);
$imageDictionary->DecodeParms = new Zend_Pdf_Element_Dictionary($decodeParms);
$this->_resource->value = $imageData;
if ($compressed) {
$this->_resource->skipFilters();
}
}
