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<?php
namespace Mpdf;
use setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException;
use setasign\Fpdi\PdfParser\Filter\AsciiHex;
use setasign\Fpdi\PdfParser\Type\PdfArray;
use setasign\Fpdi\PdfParser\Type\PdfDictionary;
use setasign\Fpdi\PdfParser\Type\PdfHexString;
use setasign\Fpdi\PdfParser\Type\PdfIndirectObject;
use setasign\Fpdi\PdfParser\Type\PdfIndirectObjectReference;
use setasign\Fpdi\PdfParser\Type\PdfName;
use setasign\Fpdi\PdfParser\Type\PdfNull;
use setasign\Fpdi\PdfParser\Type\PdfNumeric;
use setasign\Fpdi\PdfParser\Type\PdfStream;
use setasign\Fpdi\PdfParser\Type\PdfString;
use setasign\Fpdi\PdfParser\Type\PdfType;
use setasign\Fpdi\PdfParser\Type\PdfTypeException;
use setasign\Fpdi\PdfReader\DataStructure\Rectangle;
use setasign\Fpdi\PdfReader\PageBoundaries;
/**
* @mixin Mpdf
*/
trait FpdiTrait
{
use \setasign\Fpdi\FpdiTrait {
writePdfType as fpdiWritePdfType;
useImportedPage as fpdiUseImportedPage;
importPage as fpdiImportPage;
}
protected $k = Mpdf::SCALE;
/**
* The currently used object number.
*
* @var int
*/
public $currentObjectNumber;
/**
* A counter for template ids.
*
* @var int
*/
protected $templateId = 0;
protected function setPageFormat($format, $orientation)
{
// in mPDF this needs to be "P" (why ever)
$orientation = 'P';
$this->_setPageSize([$format['width'], $format['height']], $orientation);
if ($orientation != $this->DefOrientation) {
$this->OrientationChanges[$this->page] = true;
}
$this->wPt = $this->fwPt;
$this->hPt = $this->fhPt;
$this->w = $this->fw;
$this->h = $this->fh;
$this->CurOrientation = $orientation;
$this->ResetMargins();
$this->pgwidth = $this->w - $this->lMargin - $this->rMargin;
$this->PageBreakTrigger = $this->h - $this->bMargin;
$this->pageDim[$this->page]['w'] = $this->w;
$this->pageDim[$this->page]['h'] = $this->h;
}
/**
* Set the minimal PDF version.
*
* @param string $pdfVersion
*/
protected function setMinPdfVersion($pdfVersion)
{
if (\version_compare($pdfVersion, $this->pdf_version, '>')) {
$this->pdf_version = $pdfVersion;
}
}
/**
* Get the next template id.
*
* @return int
*/
protected function getNextTemplateId()
{
return $this->templateId++;
}
/**
* Draws an imported page or a template onto the page or another template.
*
* Omit one of the size parameters (width, height) to calculate the other one automatically in view to the aspect
* ratio.
*
* @param mixed $tpl The template id
* @param float|int|array $x The abscissa of upper-left corner. Alternatively you could use an assoc array
* with the keys "x", "y", "width", "height", "adjustPageSize".
* @param float|int $y The ordinate of upper-left corner.
* @param float|int|null $width The width.
* @param float|int|null $height The height.
* @param bool $adjustPageSize
* @return array The size
* @see Fpdi::getTemplateSize()
*/
public function useTemplate($tpl, $x = 0, $y = 0, $width = null, $height = null, $adjustPageSize = false)
{
return $this->useImportedPage($tpl, $x, $y, $width, $height, $adjustPageSize);
}
/**
* Draws an imported page onto the page.
*
* Omit one of the size parameters (width, height) to calculate the other one automatically in view to the aspect
* ratio.
*
* @param mixed $pageId The page id
* @param float|int|array $x The abscissa of upper-left corner. Alternatively you could use an assoc array
* with the keys "x", "y", "width", "height", "adjustPageSize".
* @param float|int $y The ordinate of upper-left corner.
* @param float|int|null $width The width.
* @param float|int|null $height The height.
* @param bool $adjustPageSize
* @return array The size.
* @see Fpdi::getTemplateSize()
*/
public function useImportedPage($pageId, $x = 0, $y = 0, $width = null, $height = null, $adjustPageSize = false)
{
if ($this->state == 0) {
$this->AddPage();
}
/* Extract $x if an array */
if (is_array($x)) {
unset($x['pageId']);
extract($x, EXTR_IF_EXISTS);
if (is_array($x)) {
$x = 0;
}
}
$newSize = $this->fpdiUseImportedPage($pageId, $x, $y, $width, $height, $adjustPageSize);
$this->setImportedPageLinks($pageId, $x, $y, $newSize);
return $newSize;
}
/**
* Imports a page.
*
* @param int $pageNumber The page number.
* @param string $box The page boundary to import. Default set to PageBoundaries::CROP_BOX.
* @param bool $groupXObject Define the form XObject as a group XObject to support transparency (if used).
* @return string A unique string identifying the imported page.
* @throws CrossReferenceException
* @throws FilterException
* @throws PdfParserException
* @throws PdfTypeException
* @throws PdfReaderException
* @see PageBoundaries
*/
public function importPage($pageNumber, $box = PageBoundaries::CROP_BOX, $groupXObject = true)
{
$pageId = $this->fpdiImportPage($pageNumber, $box, $groupXObject);
$this->importedPages[$pageId]['externalLinks'] = $this->getImportedExternalPageLinks($pageNumber);
return $pageId;
}
/**
* Imports the external page links
*
* @param int $pageNumber The page number.
* @return array
* @throws CrossReferenceException
* @throws PdfTypeException
* @throws \setasign\Fpdi\PdfParser\PdfParserException
*/
public function getImportedExternalPageLinks($pageNumber)
{
$links = [];
$reader = $this->getPdfReader($this->currentReaderId);
$parser = $reader->getParser();
$page = $reader->getPage($pageNumber);
$page->getPageDictionary();
$annotations = $page->getAttribute('Annots');
if ($annotations instanceof PdfIndirectObjectReference) {
$annotations = PdfType::resolve($parser->getIndirectObject($annotations->value), $parser);
}
if ($annotations instanceof PdfArray) {
$annotations = PdfType::resolve($annotations, $parser);
foreach ($annotations->value as $annotation) {
try {
$annotation = PdfType::resolve($annotation, $parser);
$type = PdfName::ensure(PdfType::resolve(PdfDictionary::get($annotation, 'Type'), $parser));
$subtype = PdfName::ensure(PdfType::resolve(PdfDictionary::get($annotation, 'Subtype'), $parser));
$link = PdfDictionary::ensure(PdfType::resolve(PdfDictionary::get($annotation, 'A'), $parser));
/* Skip over annotations that aren't links */
if ($type->value !== 'Annot' || $subtype->value !== 'Link') {
continue;
}
/* Calculate the link positioning */
$position = PdfArray::ensure(PdfType::resolve(PdfDictionary::get($annotation, 'Rect'), $parser), 4);
$rect = Rectangle::byPdfArray($position, $parser);
$uri = PdfString::ensure(PdfType::resolve(PdfDictionary::get($link, 'URI'), $parser));
$links[] = [
'x' => $rect->getLlx() / Mpdf::SCALE,
'y' => $rect->getLly() / Mpdf::SCALE,
'width' => $rect->getWidth() / Mpdf::SCALE,
'height' => $rect->getHeight() / Mpdf::SCALE,
'url' => $uri->value
];
} catch (PdfTypeException $e) {
continue;
}
}
}
return $links;
}
/**
* @param mixed $pageId The page id
* @param int|float $x The abscissa of upper-left corner.
* @param int|float $y The ordinate of upper-right corner.
* @param array $newSize The size.
*/
public function setImportedPageLinks($pageId, $x, $y, $newSize)
{
$originalSize = $this->getTemplateSize($pageId);
$pageHeightDifference = $this->h - $newSize['height'];
/* Handle different aspect ratio */
$widthRatio = $newSize['width'] / $originalSize['width'];
$heightRatio = $newSize['height'] / $originalSize['height'];
foreach ($this->importedPages[$pageId]['externalLinks'] as $item) {
$item['x'] *= $widthRatio;
$item['width'] *= $widthRatio;
$item['y'] *= $heightRatio;
$item['height'] *= $heightRatio;
$this->Link(
$item['x'] + $x,
/* convert Y to be measured from the top of the page */
$this->h - $item['y'] - $item['height'] - $pageHeightDifference + $y,
$item['width'],
$item['height'],
$item['url']
);
}
}
/**
* Get the size of an imported page or template.
*
* Omit one of the size parameters (width, height) to calculate the other one automatically in view to the aspect
* ratio.
*
* @param mixed $tpl The template id
* @param float|int|null $width The width.
* @param float|int|null $height The height.
* @return array|bool An array with following keys: width, height, 0 (=width), 1 (=height), orientation (L or P)
*/
public function getTemplateSize($tpl, $width = null, $height = null)
{
return $this->getImportedPageSize($tpl, $width, $height);
}
/**
* @throws CrossReferenceException
* @throws PdfTypeException
* @throws \setasign\Fpdi\PdfParser\PdfParserException
*/
public function writeImportedPagesAndResolvedObjects()
{
$this->currentReaderId = null;
foreach ($this->importedPages as $key => $pageData) {
$this->writer->object();
$this->importedPages[$key]['objectNumber'] = $this->n;
$this->currentReaderId = $pageData['readerId'];
$this->writePdfType($pageData['stream']);
$this->_put('endobj');
}
foreach (\array_keys($this->readers) as $readerId) {
$parser = $this->getPdfReader($readerId)->getParser();
$this->currentReaderId = $readerId;
while (($objectNumber = \array_pop($this->objectsToCopy[$readerId])) !== null) {
try {
$object = $parser->getIndirectObject($objectNumber);
} catch (CrossReferenceException $e) {
if ($e->getCode() === CrossReferenceException::OBJECT_NOT_FOUND) {
$object = PdfIndirectObject::create($objectNumber, 0, new PdfNull());
} else {
throw $e;
}
}
$this->writePdfType($object);
}
}
$this->currentReaderId = null;
}
public function getImportedPages()
{
return $this->importedPages;
}
protected function _put($s, $newLine = true)
{
if ($newLine) {
$this->buffer .= $s . "\n";
} else {
$this->buffer .= $s;
}
}
/**
* Writes a PdfType object to the resulting buffer.
*
* @param PdfType $value
* @throws PdfTypeException
*/
public function writePdfType(PdfType $value)
{
if (!$this->encrypted) {
if ($value instanceof PdfIndirectObject) {
/**
* @var $value PdfIndirectObject
*/
$n = $this->objectMap[$this->currentReaderId][$value->objectNumber];
$this->writer->object($n);
$this->writePdfType($value->value);
$this->_put('endobj');
return;
}
$this->fpdiWritePdfType($value);
return;
}
if ($value instanceof PdfString) {
$string = PdfString::unescape($value->value);
$string = $this->protection->rc4($this->protection->objectKey($this->currentObjectNumber), $string);
$value->value = $this->writer->escape($string);
} elseif ($value instanceof PdfHexString) {
$filter = new AsciiHex();
$string = $filter->decode($value->value);
$string = $this->protection->rc4($this->protection->objectKey($this->currentObjectNumber), $string);
$value->value = $filter->encode($string, true);
} elseif ($value instanceof PdfStream) {
$stream = $value->getStream();
$stream = $this->protection->rc4($this->protection->objectKey($this->currentObjectNumber), $stream);
$dictionary = $value->value;
$dictionary->value['Length'] = PdfNumeric::create(\strlen($stream));
$value = PdfStream::create($dictionary, $stream);
} elseif ($value instanceof PdfIndirectObject) {
/**
* @var $value PdfIndirectObject
*/
$this->currentObjectNumber = $this->objectMap[$this->currentReaderId][$value->objectNumber];
/**
* @var $value PdfIndirectObject
*/
$n = $this->objectMap[$this->currentReaderId][$value->objectNumber];
$this->writer->object($n);
$this->writePdfType($value->value);
$this->_put('endobj');
return;
}
$this->fpdiWritePdfType($value);
}
}