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<?php /** * A PHP class to provide the basic functionality to create a pdf document without * any requirement for additional modules. * * @author Wayne Munro * @license http://creativecommons.org/licenses/publicdomain/ Public Domain * @package Cpdf */ namespace Dompdf; use FontLib\Exception\FontNotFoundException; use FontLib\Font; use FontLib\BinaryStream; class Cpdf { const PDF_VERSION = '1.7'; const ACROFORM_SIG_SIGNATURESEXISTS = 0x0001; const ACROFORM_SIG_APPENDONLY = 0x0002; const ACROFORM_FIELD_BUTTON = 'Btn'; const ACROFORM_FIELD_TEXT = 'Tx'; const ACROFORM_FIELD_CHOICE = 'Ch'; const ACROFORM_FIELD_SIG = 'Sig'; const ACROFORM_FIELD_READONLY = 0x0001; const ACROFORM_FIELD_REQUIRED = 0x0002; const ACROFORM_FIELD_TEXT_MULTILINE = 0x1000; const ACROFORM_FIELD_TEXT_PASSWORD = 0x2000; const ACROFORM_FIELD_TEXT_RICHTEXT = 0x10000; const ACROFORM_FIELD_CHOICE_COMBO = 0x20000; const ACROFORM_FIELD_CHOICE_EDIT = 0x40000; const ACROFORM_FIELD_CHOICE_SORT = 0x80000; const ACROFORM_FIELD_CHOICE_MULTISELECT = 0x200000; const XOBJECT_SUBTYPE_FORM = 'Form'; /** * @var integer The current number of pdf objects in the document */ public $numObj = 0; /** * @var array This array contains all of the pdf objects, ready for final assembly */ public $objects = []; /** * @var integer The objectId (number within the objects array) of the document catalog */ public $catalogId; /** * @var integer The objectId (number within the objects array) of indirect references (Javascript EmbeddedFiles) */ protected $indirectReferenceId = 0; /** * @var integer The objectId (number within the objects array) */ protected $embeddedFilesId = 0; /** * AcroForm objectId * * @var integer */ public $acroFormId; /** * @var int */ public $signatureMaxLen = 5000; /** * @var array Array carrying information about the fonts that the system currently knows about * Used to ensure that a font is not loaded twice, among other things */ public $fonts = []; /** * @var string The default font metrics file to use if no other font has been loaded. * The path to the directory containing the font metrics should be included */ public $defaultFont = './fonts/Helvetica.afm'; /** * @string A record of the current font */ public $currentFont = ''; /** * @var string The current base font */ public $currentBaseFont = ''; /** * @var integer The number of the current font within the font array */ public $currentFontNum = 0; /** * @var integer */ public $currentNode; /** * @var integer Object number of the current page */ public $currentPage; /** * @var integer Object number of the currently active contents block */ public $currentContents; /** * @var integer Number of fonts within the system */ public $numFonts = 0; /** * @var integer Number of graphic state resources used */ private $numStates = 0; /** * @var array Number of graphic state resources used */ private $gstates = []; /** * @var array Current color for fill operations, defaults to inactive value, * all three components should be between 0 and 1 inclusive when active */ public $currentColor = null; /** * @var array Current color for stroke operations (lines etc.) */ public $currentStrokeColor = null; /** * @var string Fill rule (nonzero or evenodd) */ public $fillRule = "nonzero"; /** * @var string Current style that lines are drawn in */ public $currentLineStyle = ''; /** * @var array Current line transparency (partial graphics state) */ public $currentLineTransparency = ["mode" => "Normal", "opacity" => 1.0]; /** * array Current fill transparency (partial graphics state) */ public $currentFillTransparency = ["mode" => "Normal", "opacity" => 1.0]; /** * @var array An array which is used to save the state of the document, mainly the colors and styles * it is used to temporarily change to another state, then change back to what it was before */ public $stateStack = []; /** * @var integer Number of elements within the state stack */ public $nStateStack = 0; /** * @var integer Number of page objects within the document */ public $numPages = 0; /** * @var array Object Id storage stack */ public $stack = []; /** * @var integer Number of elements within the object Id storage stack */ public $nStack = 0; /** * an array which contains information about the objects which are not firmly attached to pages * these have been added with the addObject function */ public $looseObjects = []; /** * array contains information about how the loose objects are to be added to the document */ public $addLooseObjects = []; /** * @var integer The objectId of the information object for the document * this contains authorship, title etc. */ public $infoObject = 0; /** * @var integer Number of images being tracked within the document */ public $numImages = 0; /** * @var array An array containing options about the document * it defaults to turning on the compression of the objects */ public $options = ['compression' => true]; /** * @var integer The objectId of the first page of the document */ public $firstPageId; /** * @var integer The object Id of the procset object */ public $procsetObjectId; /** * @var array Store the information about the relationship between font families * this used so that the code knows which font is the bold version of another font, etc. * the value of this array is initialised in the constructor function. */ public $fontFamilies = []; /** * @var string Folder for php serialized formats of font metrics files. * If empty string, use same folder as original metrics files. * This can be passed in from class creator. * If this folder does not exist or is not writable, Cpdf will be **much** slower. * Because of potential trouble with php safe mode, folder cannot be created at runtime. */ public $fontcache = ''; /** * @var integer The version of the font metrics cache file. * This value must be manually incremented whenever the internal font data structure is modified. */ public $fontcacheVersion = 6; /** * @var string Temporary folder. * If empty string, will attempt system tmp folder. * This can be passed in from class creator. */ public $tmp = ''; /** * @var string Track if the current font is bolded or italicised */ public $currentTextState = ''; /** * @var string Messages are stored here during processing, these can be selected afterwards to give some useful debug information */ public $messages = ''; /** * @var string The encryption array for the document encryption is stored here */ public $arc4 = ''; /** * @var integer The object Id of the encryption information */ public $arc4_objnum = 0; /** * @var string The file identifier, used to uniquely identify a pdf document */ public $fileIdentifier = ''; /** * @var boolean A flag to say if a document is to be encrypted or not */ public $encrypted = false; /** * @var string The encryption key for the encryption of all the document content (structure is not encrypted) */ public $encryptionKey = ''; /** * @var array Array which forms a stack to keep track of nested callback functions */ public $callback = []; /** * @var integer The number of callback functions in the callback array */ public $nCallback = 0; /** * @var array Store label->id pairs for named destinations, these will be used to replace internal links * done this way so that destinations can be defined after the location that links to them */ public $destinations = []; /** * @var array Store the stack for the transaction commands, each item in here is a record of the values of all the * publiciables within the class, so that the user can rollback at will (from each 'start' command) * note that this includes the objects array, so these can be large. */ public $checkpoint = ''; /** * @var array Table of Image origin filenames and image labels which were already added with o_image(). * Allows to merge identical images */ public $imagelist = []; /** * @var array Table of already added alpha and plain image files for transparent PNG images. */ protected $imageAlphaList = []; /** * @var array List of temporary image files to be deleted after processing. */ protected $imageCache = []; /** * @var boolean Whether the text passed in should be treated as Unicode or just local character set. */ public $isUnicode = false; /** * @var string the JavaScript code of the document */ public $javascript = ''; /** * @var boolean whether the compression is possible */ protected $compressionReady = false; /** * @var array Current page size */ protected $currentPageSize = ["width" => 0, "height" => 0]; /** * @var array All the chars that will be required in the font subsets */ protected $stringSubsets = []; /** * @var string The target internal encoding */ protected static $targetEncoding = 'Windows-1252'; /** * @var array */ protected $byteRange = array(); /** * @var array The list of the core fonts */ protected static $coreFonts = [ 'courier', 'courier-bold', 'courier-oblique', 'courier-boldoblique', 'helvetica', 'helvetica-bold', 'helvetica-oblique', 'helvetica-boldoblique', 'times-roman', 'times-bold', 'times-italic', 'times-bolditalic', 'symbol', 'zapfdingbats' ]; /** * Class constructor * This will start a new document * * @param array $pageSize Array of 4 numbers, defining the bottom left and upper right corner of the page. first two are normally zero. * @param boolean $isUnicode Whether text will be treated as Unicode or not. * @param string $fontcache The font cache folder * @param string $tmp The temporary folder */ function __construct($pageSize = [0, 0, 612, 792], $isUnicode = false, $fontcache = '', $tmp = '') { $this->isUnicode = $isUnicode; $this->fontcache = rtrim($fontcache, DIRECTORY_SEPARATOR."/\\"); $this->tmp = ($tmp !== '' ? $tmp : sys_get_temp_dir()); $this->newDocument($pageSize); $this->compressionReady = function_exists('gzcompress'); if (in_array('Windows-1252', mb_list_encodings())) { self::$targetEncoding = 'Windows-1252'; } // also initialize the font families that are known about already $this->setFontFamily('init'); } public function __destruct() { foreach ($this->imageCache as $file) { if (file_exists($file)) { unlink($file); } } } /** * Document object methods (internal use only) * * There is about one object method for each type of object in the pdf document * Each function has the same call list ($id,$action,$options). * $id = the object ID of the object, or what it is to be if it is being created * $action = a string specifying the action to be performed, though ALL must support: * 'new' - create the object with the id $id * 'out' - produce the output for the pdf object * $options = optional, a string or array containing the various parameters for the object * * These, in conjunction with the output function are the ONLY way for output to be produced * within the pdf 'file'. */ /** * Destination object, used to specify the location for the user to jump to, presently on opening * * @param $id * @param $action * @param string $options * @return string|null */ protected function o_destination($id, $action, $options = '') { switch ($action) { case 'new': $this->objects[$id] = ['t' => 'destination', 'info' => []]; $tmp = ''; switch ($options['type']) { case 'XYZ': /** @noinspection PhpMissingBreakStatementInspection */ case 'FitR': $tmp = ' ' . $options['p3'] . $tmp; case 'FitH': case 'FitV': case 'FitBH': /** @noinspection PhpMissingBreakStatementInspection */ case 'FitBV': $tmp = ' ' . $options['p1'] . ' ' . $options['p2'] . $tmp; case 'Fit': case 'FitB': $tmp = $options['type'] . $tmp; $this->objects[$id]['info']['string'] = $tmp; $this->objects[$id]['info']['page'] = $options['page']; } break; case 'out': $o = &$this->objects[$id]; $tmp = $o['info']; $res = "\n$id 0 obj\n" . '[' . $tmp['page'] . ' 0 R /' . $tmp['string'] . "]\nendobj"; return $res; } return null; } /** * set the viewer preferences * * @param $id * @param $action * @param string|array $options * @return string|null */ protected function o_viewerPreferences($id, $action, $options = '') { switch ($action) { case 'new': $this->objects[$id] = ['t' => 'viewerPreferences', 'info' => []]; break; case 'add': $o = &$this->objects[$id]; foreach ($options as $k => $v) { switch ($k) { // Boolean keys case 'HideToolbar': case 'HideMenubar': case 'HideWindowUI': case 'FitWindow': case 'CenterWindow': case 'DisplayDocTitle': case 'PickTrayByPDFSize': $o['info'][$k] = (bool)$v; break; // Integer keys case 'NumCopies': $o['info'][$k] = (int)$v; break; // Name keys case 'ViewArea': case 'ViewClip': case 'PrintClip': case 'PrintArea': $o['info'][$k] = (string)$v; break; // Named with limited valid values case 'NonFullScreenPageMode': if (!in_array($v, ['UseNone', 'UseOutlines', 'UseThumbs', 'UseOC'])) { break; } $o['info'][$k] = $v; break; case 'Direction': if (!in_array($v, ['L2R', 'R2L'])) { break; } $o['info'][$k] = $v; break; case 'PrintScaling': if (!in_array($v, ['None', 'AppDefault'])) { break; } $o['info'][$k] = $v; break; case 'Duplex': if (!in_array($v, ['None', 'Simplex', 'DuplexFlipShortEdge', 'DuplexFlipLongEdge'])) { break; } $o['info'][$k] = $v; break; // Integer array case 'PrintPageRange': // Cast to integer array foreach ($v as $vK => $vV) { $v[$vK] = (int)$vV; } $o['info'][$k] = array_values($v); break; } } break; case 'out': $o = &$this->objects[$id]; $res = "\n$id 0 obj\n<< "; foreach ($o['info'] as $k => $v) { if (is_string($v)) { $v = '/' . $v; } elseif (is_int($v)) { $v = (string) $v; } elseif (is_bool($v)) { $v = ($v ? 'true' : 'false'); } elseif (is_array($v)) { $v = '[' . implode(' ', $v) . ']'; } $res .= "\n/$k $v"; } $res .= "\n>>\nendobj"; return $res; } return null; } /** * define the document catalog, the overall controller for the document * * @param $id * @param $action * @param string|array $options * @return string|null */ protected function o_catalog($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->objects[$id] = ['t' => 'catalog', 'info' => []]; $this->catalogId = $id; break; case 'acroform': case 'outlines': case 'pages': case 'openHere': case 'names': $o['info'][$action] = $options; break; case 'viewerPreferences': if (!isset($o['info']['viewerPreferences'])) { $this->numObj++; $this->o_viewerPreferences($this->numObj, 'new'); $o['info']['viewerPreferences'] = $this->numObj; } $vp = $o['info']['viewerPreferences']; $this->o_viewerPreferences($vp, 'add', $options); break; case 'out': $res = "\n$id 0 obj\n<< /Type /Catalog"; foreach ($o['info'] as $k => $v) { switch ($k) { case 'outlines': $res .= "\n/Outlines $v 0 R"; break; case 'pages': $res .= "\n/Pages $v 0 R"; break; case 'viewerPreferences': $res .= "\n/ViewerPreferences $v 0 R"; break; case 'openHere': $res .= "\n/OpenAction $v 0 R"; break; case 'names': $res .= "\n/Names $v 0 R"; break; case 'acroform': $res .= "\n/AcroForm $v 0 R"; break; } } $res .= " >>\nendobj"; return $res; } return null; } /** * object which is a parent to the pages in the document * * @param $id * @param $action * @param string $options * @return string|null */ protected function o_pages($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->objects[$id] = ['t' => 'pages', 'info' => []]; $this->o_catalog($this->catalogId, 'pages', $id); break; case 'page': if (!is_array($options)) { // then it will just be the id of the new page $o['info']['pages'][] = $options; } else { // then it should be an array having 'id','rid','pos', where rid=the page to which this one will be placed relative // and pos is either 'before' or 'after', saying where this page will fit. if (isset($options['id']) && isset($options['rid']) && isset($options['pos'])) { $i = array_search($options['rid'], $o['info']['pages']); if (isset($o['info']['pages'][$i]) && $o['info']['pages'][$i] == $options['rid']) { // then there is a match // make a space switch ($options['pos']) { case 'before': $k = $i; break; case 'after': $k = $i + 1; break; default: $k = -1; break; } if ($k >= 0) { for ($j = count($o['info']['pages']) - 1; $j >= $k; $j--) { $o['info']['pages'][$j + 1] = $o['info']['pages'][$j]; } $o['info']['pages'][$k] = $options['id']; } } } } break; case 'procset': $o['info']['procset'] = $options; break; case 'mediaBox': $o['info']['mediaBox'] = $options; // which should be an array of 4 numbers $this->currentPageSize = ['width' => $options[2], 'height' => $options[3]]; break; case 'font': $o['info']['fonts'][] = ['objNum' => $options['objNum'], 'fontNum' => $options['fontNum']]; break; case 'extGState': $o['info']['extGStates'][] = ['objNum' => $options['objNum'], 'stateNum' => $options['stateNum']]; break; case 'xObject': $o['info']['xObjects'][] = ['objNum' => $options['objNum'], 'label' => $options['label']]; break; case 'out': if (count($o['info']['pages'])) { $res = "\n$id 0 obj\n<< /Type /Pages\n/Kids ["; foreach ($o['info']['pages'] as $v) { $res .= "$v 0 R\n"; } $res .= "]\n/Count " . count($this->objects[$id]['info']['pages']); if ((isset($o['info']['fonts']) && count($o['info']['fonts'])) || isset($o['info']['procset']) || (isset($o['info']['extGStates']) && count($o['info']['extGStates'])) ) { $res .= "\n/Resources <<"; if (isset($o['info']['procset'])) { $res .= "\n/ProcSet " . $o['info']['procset'] . " 0 R"; } if (isset($o['info']['fonts']) && count($o['info']['fonts'])) { $res .= "\n/Font << "; foreach ($o['info']['fonts'] as $finfo) { $res .= "\n/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R"; } $res .= "\n>>"; } if (isset($o['info']['xObjects']) && count($o['info']['xObjects'])) { $res .= "\n/XObject << "; foreach ($o['info']['xObjects'] as $finfo) { $res .= "\n/" . $finfo['label'] . " " . $finfo['objNum'] . " 0 R"; } $res .= "\n>>"; } if (isset($o['info']['extGStates']) && count($o['info']['extGStates'])) { $res .= "\n/ExtGState << "; foreach ($o['info']['extGStates'] as $gstate) { $res .= "\n/GS" . $gstate['stateNum'] . " " . $gstate['objNum'] . " 0 R"; } $res .= "\n>>"; } $res .= "\n>>"; if (isset($o['info']['mediaBox'])) { $tmp = $o['info']['mediaBox']; $res .= "\n/MediaBox [" . sprintf( '%.3F %.3F %.3F %.3F', $tmp[0], $tmp[1], $tmp[2], $tmp[3] ) . ']'; } } $res .= "\n >>\nendobj"; } else { $res = "\n$id 0 obj\n<< /Type /Pages\n/Count 0\n>>\nendobj"; } return $res; } return null; } /** * define the outlines in the doc, empty for now * * @param $id * @param $action * @param string $options * @return string|null */ protected function o_outlines($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->objects[$id] = ['t' => 'outlines', 'info' => ['outlines' => []]]; $this->o_catalog($this->catalogId, 'outlines', $id); break; case 'outline': $o['info']['outlines'][] = $options; break; case 'out': if (count($o['info']['outlines'])) { $res = "\n$id 0 obj\n<< /Type /Outlines /Kids ["; foreach ($o['info']['outlines'] as $v) { $res .= "$v 0 R "; } $res .= "] /Count " . count($o['info']['outlines']) . " >>\nendobj"; } else { $res = "\n$id 0 obj\n<< /Type /Outlines /Count 0 >>\nendobj"; } return $res; } return null; } /** * an object to hold the font description * * @param $id * @param $action * @param string|array $options * @return string|null * @throws FontNotFoundException */ protected function o_font($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->objects[$id] = [ 't' => 'font', 'info' => [ 'name' => $options['name'], 'fontFileName' => $options['fontFileName'], 'SubType' => 'Type1', 'isSubsetting' => $options['isSubsetting'] ] ]; $fontNum = $this->numFonts; $this->objects[$id]['info']['fontNum'] = $fontNum; // deal with the encoding and the differences if (isset($options['differences'])) { // then we'll need an encoding dictionary $this->numObj++; $this->o_fontEncoding($this->numObj, 'new', $options); $this->objects[$id]['info']['encodingDictionary'] = $this->numObj; } else { if (isset($options['encoding'])) { // we can specify encoding here switch ($options['encoding']) { case 'WinAnsiEncoding': case 'MacRomanEncoding': case 'MacExpertEncoding': $this->objects[$id]['info']['encoding'] = $options['encoding']; break; case 'none': break; default: $this->objects[$id]['info']['encoding'] = 'WinAnsiEncoding'; break; } } else { $this->objects[$id]['info']['encoding'] = 'WinAnsiEncoding'; } } if ($this->fonts[$options['fontFileName']]['isUnicode']) { // For Unicode fonts, we need to incorporate font data into // sub-sections that are linked from the primary font section. // Look at o_fontGIDtoCID and o_fontDescendentCID functions // for more information. // // All of this code is adapted from the excellent changes made to // transform FPDF to TCPDF (http://tcpdf.sourceforge.net/) $toUnicodeId = ++$this->numObj; $this->o_toUnicode($toUnicodeId, 'new'); $this->objects[$id]['info']['toUnicode'] = $toUnicodeId; $cidFontId = ++$this->numObj; $this->o_fontDescendentCID($cidFontId, 'new', $options); $this->objects[$id]['info']['cidFont'] = $cidFontId; } // also tell the pages node about the new font $this->o_pages($this->currentNode, 'font', ['fontNum' => $fontNum, 'objNum' => $id]); break; case 'add': $font_options = $this->processFont($id, $o['info']); if ($font_options !== false) { foreach ($font_options as $k => $v) { switch ($k) { case 'BaseFont': $o['info']['name'] = $v; break; case 'FirstChar': case 'LastChar': case 'Widths': case 'FontDescriptor': case 'SubType': $this->addMessage('o_font ' . $k . " : " . $v); $o['info'][$k] = $v; break; } } // pass values down to descendent font if (isset($o['info']['cidFont'])) { $this->o_fontDescendentCID($o['info']['cidFont'], 'add', $font_options); } } break; case 'out': if ($this->fonts[$this->objects[$id]['info']['fontFileName']]['isUnicode']) { // For Unicode fonts, we need to incorporate font data into // sub-sections that are linked from the primary font section. // Look at o_fontGIDtoCID and o_fontDescendentCID functions // for more information. // // All of this code is adapted from the excellent changes made to // transform FPDF to TCPDF (http://tcpdf.sourceforge.net/) $res = "\n$id 0 obj\n<</Type /Font\n/Subtype /Type0\n"; $res .= "/BaseFont /" . $o['info']['name'] . "\n"; // The horizontal identity mapping for 2-byte CIDs; may be used // with CIDFonts using any Registry, Ordering, and Supplement values. $res .= "/Encoding /Identity-H\n"; $res .= "/DescendantFonts [" . $o['info']['cidFont'] . " 0 R]\n"; $res .= "/ToUnicode " . $o['info']['toUnicode'] . " 0 R\n"; $res .= ">>\n"; $res .= "endobj"; } else { $res = "\n$id 0 obj\n<< /Type /Font\n/Subtype /" . $o['info']['SubType'] . "\n"; $res .= "/Name /F" . $o['info']['fontNum'] . "\n"; $res .= "/BaseFont /" . $o['info']['name'] . "\n"; if (isset($o['info']['encodingDictionary'])) { // then place a reference to the dictionary $res .= "/Encoding " . $o['info']['encodingDictionary'] . " 0 R\n"; } else { if (isset($o['info']['encoding'])) { // use the specified encoding $res .= "/Encoding /" . $o['info']['encoding'] . "\n"; } } if (isset($o['info']['FirstChar'])) { $res .= "/FirstChar " . $o['info']['FirstChar'] . "\n"; } if (isset($o['info']['LastChar'])) { $res .= "/LastChar " . $o['info']['LastChar'] . "\n"; } if (isset($o['info']['Widths'])) { $res .= "/Widths " . $o['info']['Widths'] . " 0 R\n"; } if (isset($o['info']['FontDescriptor'])) { $res .= "/FontDescriptor " . $o['info']['FontDescriptor'] . " 0 R\n"; } $res .= ">>\n"; $res .= "endobj"; } return $res; } return null; } protected function getFontSubsettingTag(array $font): string { // convert font num to hexavigesimal numeral system letters A - Z only $base_26 = strtoupper(base_convert($font['fontNum'], 10, 26)); for ($i = 0; $i < strlen($base_26); $i++) { $char = $base_26[$i]; if ($char <= "9") { $base_26[$i] = chr(65 + intval($char)); } else { $base_26[$i] = chr(ord($char) + 10); } } return 'SUB' . str_pad($base_26, 3, 'A', STR_PAD_LEFT); } /** * @param int $fontObjId * @param array $object_info * @return array|false * @throws FontNotFoundException */ private function processFont(int $fontObjId, array $object_info) { $fontFileName = $object_info['fontFileName']; if (!isset($this->fonts[$fontFileName])) { return false; } $font = &$this->fonts[$fontFileName]; $fileSuffix = $font['fileSuffix']; $fileSuffixLower = strtolower($font['fileSuffix']); $fbfile = "$fontFileName.$fileSuffix"; $isTtfFont = $fileSuffixLower === 'ttf'; $isPfbFont = $fileSuffixLower === 'pfb'; $this->addMessage('selectFont: checking for - ' . $fbfile); if (!$fileSuffix) { $this->addMessage( 'selectFont: pfb or ttf file not found, ok if this is one of the 14 standard fonts' ); return false; } else { $adobeFontName = isset($font['PostScriptName']) ? $font['PostScriptName'] : $font['FontName']; // $fontObj = $this->numObj; $this->addMessage("selectFont: adding font file - $fbfile - $adobeFontName"); // find the array of font widths, and put that into an object. $firstChar = -1; $lastChar = 0; $widths = []; $cid_widths = []; foreach ($font['C'] as $num => $d) { if (intval($num) > 0 || $num == '0') { if (!$font['isUnicode']) { // With Unicode, widths array isn't used if ($lastChar > 0 && $num > $lastChar + 1) { for ($i = $lastChar + 1; $i < $num; $i++) { $widths[] = 0; } } } $widths[] = $d; if ($font['isUnicode']) { $cid_widths[$num] = $d; } if ($firstChar == -1) { $firstChar = $num; } $lastChar = $num; } } // also need to adjust the widths for the differences array if (isset($object['differences'])) { foreach ($object['differences'] as $charNum => $charName) { if ($charNum > $lastChar) { if (!$object['isUnicode']) { // With Unicode, widths array isn't used for ($i = $lastChar + 1; $i <= $charNum; $i++) { $widths[] = 0; } } $lastChar = $charNum; } if (isset($font['C'][$charName])) { $widths[$charNum - $firstChar] = $font['C'][$charName]; if ($font['isUnicode']) { $cid_widths[$charName] = $font['C'][$charName]; } } } } if ($font['isUnicode']) { $font['CIDWidths'] = $cid_widths; } $this->addMessage('selectFont: FirstChar = ' . $firstChar); $this->addMessage('selectFont: LastChar = ' . $lastChar); $widthid = -1; if (!$font['isUnicode']) { // With Unicode, widths array isn't used $this->numObj++; $this->o_contents($this->numObj, 'new', 'raw'); $this->objects[$this->numObj]['c'] .= '[' . implode(' ', $widths) . ']'; $widthid = $this->numObj; } $missing_width = 500; $stemV = 70; if (isset($font['MissingWidth'])) { $missing_width = $font['MissingWidth']; } if (isset($font['StdVW'])) { $stemV = $font['StdVW']; } else { if (isset($font['Weight']) && preg_match('!(bold|black)!i', $font['Weight'])) { $stemV = 120; } } // load the pfb file, and put that into an object too. // note that pdf supports only binary format type 1 font files, though there is a // simple utility to convert them from pfa to pfb. if (!$font['isSubsetting']) { $data = file_get_contents($fbfile); } else { $adobeFontName = $this->getFontSubsettingTag($font) . '+' . $adobeFontName; $this->stringSubsets[$fontFileName][] = 32; // Force space if not in yet $subset = $this->stringSubsets[$fontFileName]; sort($subset); // Load font $font_obj = Font::load($fbfile); $font_obj->parse(); // Define subset $font_obj->setSubset($subset); $font_obj->reduce(); // Write new font $tmp_name = @tempnam($this->tmp, "cpdf_subset_"); $font_obj->open($tmp_name, BinaryStream::modeReadWrite); $font_obj->encode(["OS/2"]); $font_obj->close(); // Parse the new font to get cid2gid and widths $font_obj = Font::load($tmp_name); // Find Unicode char map table $subtable = null; foreach ($font_obj->getData("cmap", "subtables") as $_subtable) { if ($_subtable["platformID"] == 0 || $_subtable["platformID"] == 3 && $_subtable["platformSpecificID"] == 1) { $subtable = $_subtable; break; } } if ($subtable) { $glyphIndexArray = $subtable["glyphIndexArray"]; $hmtx = $font_obj->getData("hmtx"); unset($glyphIndexArray[0xFFFF]); $cidtogid = str_pad('', max(array_keys($glyphIndexArray)) * 2 + 1, "\x00"); $font['CIDWidths'] = []; foreach ($glyphIndexArray as $cid => $gid) { if ($cid >= 0 && $cid < 0xFFFF && $gid) { $cidtogid[$cid * 2] = chr($gid >> 8); $cidtogid[$cid * 2 + 1] = chr($gid & 0xFF); } $width = $font_obj->normalizeFUnit(isset($hmtx[$gid]) ? $hmtx[$gid][0] : $hmtx[0][0]); $font['CIDWidths'][$cid] = $width; } $font['CIDtoGID'] = base64_encode(gzcompress($cidtogid)); $font['CIDtoGID_Compressed'] = true; $data = file_get_contents($tmp_name); } else { $data = file_get_contents($fbfile); } $font_obj->close(); unlink($tmp_name); } // create the font descriptor $this->numObj++; $fontDescriptorId = $this->numObj; $this->numObj++; $pfbid = $this->numObj; // determine flags (more than a little flakey, hopefully will not matter much) $flags = 0; if ($font['ItalicAngle'] != 0) { $flags += pow(2, 6); } if ($font['IsFixedPitch'] === 'true') { $flags += 1; } $flags += pow(2, 5); // assume non-sybolic $list = [ 'Ascent' => 'Ascender', 'CapHeight' => 'Ascender', //FIXME: php-font-lib is not grabbing this value, so we'll fake it and use the Ascender value // 'CapHeight' 'MissingWidth' => 'MissingWidth', 'Descent' => 'Descender', 'FontBBox' => 'FontBBox', 'ItalicAngle' => 'ItalicAngle' ]; $fdopt = [ 'Flags' => $flags, 'FontName' => $adobeFontName, 'StemV' => $stemV ]; foreach ($list as $k => $v) { if (isset($font[$v])) { $fdopt[$k] = $font[$v]; } } if ($isPfbFont) { $fdopt['FontFile'] = $pfbid; } elseif ($isTtfFont) { $fdopt['FontFile2'] = $pfbid; } $this->o_fontDescriptor($fontDescriptorId, 'new', $fdopt); // embed the font program $this->o_contents($this->numObj, 'new'); $this->objects[$pfbid]['c'] .= $data; // determine the cruicial lengths within this file if ($isPfbFont) { $l1 = strpos($data, 'eexec') + 6; $l2 = strpos($data, '00000000') - $l1; $l3 = mb_strlen($data, '8bit') - $l2 - $l1; $this->o_contents( $this->numObj, 'add', ['Length1' => $l1, 'Length2' => $l2, 'Length3' => $l3] ); } elseif ($isTtfFont) { $l1 = mb_strlen($data, '8bit'); $this->o_contents($this->numObj, 'add', ['Length1' => $l1]); } // tell the font object about all this new stuff $options = [ 'BaseFont' => $adobeFontName, 'MissingWidth' => $missing_width, 'Widths' => $widthid, 'FirstChar' => $firstChar, 'LastChar' => $lastChar, 'FontDescriptor' => $fontDescriptorId ]; if ($isTtfFont) { $options['SubType'] = 'TrueType'; } $this->addMessage("adding extra info to font.($fontObjId)"); foreach ($options as $fk => $fv) { $this->addMessage("$fk : $fv"); } } return $options; } /** * A toUnicode section, needed for unicode fonts * * @param $id * @param $action * @return null|string */ protected function o_toUnicode($id, $action) { switch ($action) { case 'new': $this->objects[$id] = [ 't' => 'toUnicode' ]; break; case 'add': break; case 'out': $ordering = 'UCS'; $registry = 'Adobe'; if ($this->encrypted) { $this->encryptInit($id); $ordering = $this->ARC4($ordering); $registry = $this->filterText($this->ARC4($registry), false, false); } $stream = <<<EOT /CIDInit /ProcSet findresource begin 12 dict begin begincmap /CIDSystemInfo <</Registry ($registry) /Ordering ($ordering) /Supplement 0 >> def /CMapName /Adobe-Identity-UCS def /CMapType 2 def 1 begincodespacerange <0000> <FFFF> endcodespacerange 1 beginbfrange <0000> <FFFF> <0000> endbfrange endcmap CMapName currentdict /CMap defineresource pop end end EOT; $res = "\n$id 0 obj\n"; $res .= "<</Length " . mb_strlen($stream, '8bit') . " >>\n"; $res .= "stream\n" . $stream . "\nendstream" . "\nendobj"; return $res; } return null; } /** * a font descriptor, needed for including additional fonts * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_fontDescriptor($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->objects[$id] = ['t' => 'fontDescriptor', 'info' => $options]; break; case 'out': $res = "\n$id 0 obj\n<< /Type /FontDescriptor\n"; foreach ($o['info'] as $label => $value) { switch ($label) { case 'Ascent': case 'CapHeight': case 'Descent': case 'Flags': case 'ItalicAngle': case 'StemV': case 'AvgWidth': case 'Leading': case 'MaxWidth': case 'MissingWidth': case 'StemH': case 'XHeight': case 'CharSet': if (mb_strlen($value, '8bit')) { $res .= "/$label $value\n"; } break; case 'FontFile': case 'FontFile2': case 'FontFile3': $res .= "/$label $value 0 R\n"; break; case 'FontBBox': $res .= "/$label [$value[0] $value[1] $value[2] $value[3]]\n"; break; case 'FontName': $res .= "/$label /$value\n"; break; } } $res .= ">>\nendobj"; return $res; } return null; } /** * the font encoding * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_fontEncoding($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': // the options array should contain 'differences' and maybe 'encoding' $this->objects[$id] = ['t' => 'fontEncoding', 'info' => $options]; break; case 'out': $res = "\n$id 0 obj\n<< /Type /Encoding\n"; if (!isset($o['info']['encoding'])) { $o['info']['encoding'] = 'WinAnsiEncoding'; } if ($o['info']['encoding'] !== 'none') { $res .= "/BaseEncoding /" . $o['info']['encoding'] . "\n"; } $res .= "/Differences \n["; $onum = -100; foreach ($o['info']['differences'] as $num => $label) { if ($num != $onum + 1) { // we cannot make use of consecutive numbering $res .= "\n$num /$label"; } else { $res .= " /$label"; } $onum = $num; } $res .= "\n]\n>>\nendobj"; return $res; } return null; } /** * a descendent cid font, needed for unicode fonts * * @param $id * @param $action * @param string|array $options * @return null|string */ protected function o_fontDescendentCID($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->objects[$id] = ['t' => 'fontDescendentCID', 'info' => $options]; // we need a CID system info section $cidSystemInfoId = ++$this->numObj; $this->o_cidSystemInfo($cidSystemInfoId, 'new'); $this->objects[$id]['info']['cidSystemInfo'] = $cidSystemInfoId; // and a CID to GID map $cidToGidMapId = ++$this->numObj; $this->o_fontGIDtoCIDMap($cidToGidMapId, 'new', $options); $this->objects[$id]['info']['cidToGidMap'] = $cidToGidMapId; break; case 'add': foreach ($options as $k => $v) { switch ($k) { case 'BaseFont': $o['info']['name'] = $v; break; case 'FirstChar': case 'LastChar': case 'MissingWidth': case 'FontDescriptor': case 'SubType': $this->addMessage("o_fontDescendentCID $k : $v"); $o['info'][$k] = $v; break; } } // pass values down to cid to gid map $this->o_fontGIDtoCIDMap($o['info']['cidToGidMap'], 'add', $options); break; case 'out': $res = "\n$id 0 obj\n"; $res .= "<</Type /Font\n"; $res .= "/Subtype /CIDFontType2\n"; $res .= "/BaseFont /" . $o['info']['name'] . "\n"; $res .= "/CIDSystemInfo " . $o['info']['cidSystemInfo'] . " 0 R\n"; // if (isset($o['info']['FirstChar'])) { // $res.= "/FirstChar ".$o['info']['FirstChar']."\n"; // } // if (isset($o['info']['LastChar'])) { // $res.= "/LastChar ".$o['info']['LastChar']."\n"; // } if (isset($o['info']['FontDescriptor'])) { $res .= "/FontDescriptor " . $o['info']['FontDescriptor'] . " 0 R\n"; } if (isset($o['info']['MissingWidth'])) { $res .= "/DW " . $o['info']['MissingWidth'] . "\n"; } if (isset($o['info']['fontFileName']) && isset($this->fonts[$o['info']['fontFileName']]['CIDWidths'])) { $cid_widths = &$this->fonts[$o['info']['fontFileName']]['CIDWidths']; $w = ''; foreach ($cid_widths as $cid => $width) { $w .= "$cid [$width] "; } $res .= "/W [$w]\n"; } $res .= "/CIDToGIDMap " . $o['info']['cidToGidMap'] . " 0 R\n"; $res .= ">>\n"; $res .= "endobj"; return $res; } return null; } /** * CID system info section, needed for unicode fonts * * @param $id * @param $action * @return null|string */ protected function o_cidSystemInfo($id, $action) { switch ($action) { case 'new': $this->objects[$id] = [ 't' => 'cidSystemInfo' ]; break; case 'add': break; case 'out': $ordering = 'UCS'; $registry = 'Adobe'; if ($this->encrypted) { $this->encryptInit($id); $ordering = $this->ARC4($ordering); $registry = $this->ARC4($registry); } $res = "\n$id 0 obj\n"; $res .= '<</Registry (' . $registry . ")\n"; // A string identifying an issuer of character collections $res .= '/Ordering (' . $ordering . ")\n"; // A string that uniquely names a character collection issued by a specific registry $res .= "/Supplement 0\n"; // The supplement number of the character collection. $res .= ">>"; $res .= "\nendobj"; return $res; } return null; } /** * a font glyph to character map, needed for unicode fonts * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_fontGIDtoCIDMap($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->objects[$id] = ['t' => 'fontGIDtoCIDMap', 'info' => $options]; break; case 'out': $res = "\n$id 0 obj\n"; $fontFileName = $o['info']['fontFileName']; $tmp = $this->fonts[$fontFileName]['CIDtoGID'] = base64_decode($this->fonts[$fontFileName]['CIDtoGID']); $compressed = isset($this->fonts[$fontFileName]['CIDtoGID_Compressed']) && $this->fonts[$fontFileName]['CIDtoGID_Compressed']; if (!$compressed && isset($o['raw'])) { $res .= $tmp; } else { $res .= "<<"; if (!$compressed && $this->compressionReady && $this->options['compression']) { // then implement ZLIB based compression on this content stream $compressed = true; $tmp = gzcompress($tmp, 6); } if ($compressed) { $res .= "\n/Filter /FlateDecode"; } if ($this->encrypted) { $this->encryptInit($id); $tmp = $this->ARC4($tmp); } $res .= "\n/Length " . mb_strlen($tmp, '8bit') . ">>\nstream\n$tmp\nendstream"; } $res .= "\nendobj"; return $res; } return null; } /** * the document procset, solves some problems with printing to old PS printers * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_procset($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->objects[$id] = ['t' => 'procset', 'info' => ['PDF' => 1, 'Text' => 1]]; $this->o_pages($this->currentNode, 'procset', $id); $this->procsetObjectId = $id; break; case 'add': // this is to add new items to the procset list, despite the fact that this is considered // obsolete, the items are required for printing to some postscript printers switch ($options) { case 'ImageB': case 'ImageC': case 'ImageI': $o['info'][$options] = 1; break; } break; case 'out': $res = "\n$id 0 obj\n["; foreach ($o['info'] as $label => $val) { $res .= "/$label "; } $res .= "]\nendobj"; return $res; } return null; } /** * define the document information * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_info($id, $action, $options = '') { switch ($action) { case 'new': $this->infoObject = $id; $date = 'D:' . @date('Ymd'); $this->objects[$id] = [ 't' => 'info', 'info' => [ 'Producer' => 'CPDF (dompdf)', 'CreationDate' => $date ] ]; break; case 'Title': case 'Author': case 'Subject': case 'Keywords': case 'Creator': case 'Producer': case 'CreationDate': case 'ModDate': case 'Trapped': $this->objects[$id]['info'][$action] = $options; break; case 'out': $encrypted = $this->encrypted; if ($encrypted) { $this->encryptInit($id); } $res = "\n$id 0 obj\n<<\n"; $o = &$this->objects[$id]; foreach ($o['info'] as $k => $v) { $res .= "/$k ("; // dates must be outputted as-is, without Unicode transformations if ($k !== 'CreationDate' && $k !== 'ModDate') { $v = $this->utf8toUtf16BE($v); } if ($encrypted) { $v = $this->ARC4($v); } $res .= $this->filterText($v, false, false); $res .= ")\n"; } $res .= ">>\nendobj"; return $res; } return null; } /** * an action object, used to link to URLS initially * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_action($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': if (is_array($options)) { $this->objects[$id] = ['t' => 'action', 'info' => $options, 'type' => $options['type']]; } else { // then assume a URI action $this->objects[$id] = ['t' => 'action', 'info' => $options, 'type' => 'URI']; } break; case 'out': if ($this->encrypted) { $this->encryptInit($id); } $res = "\n$id 0 obj\n<< /Type /Action"; switch ($o['type']) { case 'ilink': if (!isset($this->destinations[(string)$o['info']['label']])) { break; } // there will be an 'label' setting, this is the name of the destination $res .= "\n/S /GoTo\n/D " . $this->destinations[(string)$o['info']['label']] . " 0 R"; break; case 'URI': $res .= "\n/S /URI\n/URI ("; if ($this->encrypted) { $res .= $this->filterText($this->ARC4($o['info']), false, false); } else { $res .= $this->filterText($o['info'], false, false); } $res .= ")"; break; } $res .= "\n>>\nendobj"; return $res; } return null; } /** * an annotation object, this will add an annotation to the current page. * initially will support just link annotations * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_annotation($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': // add the annotation to the current page $pageId = $this->currentPage; $this->o_page($pageId, 'annot', $id); // and add the action object which is going to be required switch ($options['type']) { case 'link': $this->objects[$id] = ['t' => 'annotation', 'info' => $options]; $this->numObj++; $this->o_action($this->numObj, 'new', $options['url']); $this->objects[$id]['info']['actionId'] = $this->numObj; break; case 'ilink': // this is to a named internal link $label = $options['label']; $this->objects[$id] = ['t' => 'annotation', 'info' => $options]; $this->numObj++; $this->o_action($this->numObj, 'new', ['type' => 'ilink', 'label' => $label]); $this->objects[$id]['info']['actionId'] = $this->numObj; break; } break; case 'out': $res = "\n$id 0 obj\n<< /Type /Annot"; switch ($o['info']['type']) { case 'link': case 'ilink': $res .= "\n/Subtype /Link"; break; } $res .= "\n/A " . $o['info']['actionId'] . " 0 R"; $res .= "\n/Border [0 0 0]"; $res .= "\n/H /I"; $res .= "\n/Rect [ "; foreach ($o['info']['rect'] as $v) { $res .= sprintf("%.4F ", $v); } $res .= "]"; $res .= "\n>>\nendobj"; return $res; } return null; } /** * a page object, it also creates a contents object to hold its contents * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_page($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->numPages++; $this->objects[$id] = [ 't' => 'page', 'info' => [ 'parent' => $this->currentNode, 'pageNum' => $this->numPages, 'mediaBox' => $this->objects[$this->currentNode]['info']['mediaBox'] ] ]; if (is_array($options)) { // then this must be a page insertion, array should contain 'rid','pos'=[before|after] $options['id'] = $id; $this->o_pages($this->currentNode, 'page', $options); } else { $this->o_pages($this->currentNode, 'page', $id); } $this->currentPage = $id; //make a contents object to go with this page $this->numObj++; $this->o_contents($this->numObj, 'new', $id); $this->currentContents = $this->numObj; $this->objects[$id]['info']['contents'] = []; $this->objects[$id]['info']['contents'][] = $this->numObj; $match = ($this->numPages % 2 ? 'odd' : 'even'); foreach ($this->addLooseObjects as $oId => $target) { if ($target === 'all' || $match === $target) { $this->objects[$id]['info']['contents'][] = $oId; } } break; case 'content': $o['info']['contents'][] = $options; break; case 'annot': // add an annotation to this page if (!isset($o['info']['annot'])) { $o['info']['annot'] = []; } // $options should contain the id of the annotation dictionary $o['info']['annot'][] = $options; break; case 'out': $res = "\n$id 0 obj\n<< /Type /Page"; if (isset($o['info']['mediaBox'])) { $tmp = $o['info']['mediaBox']; $res .= "\n/MediaBox [" . sprintf( '%.3F %.3F %.3F %.3F', $tmp[0], $tmp[1], $tmp[2], $tmp[3] ) . ']'; } $res .= "\n/Parent " . $o['info']['parent'] . " 0 R"; if (isset($o['info']['annot'])) { $res .= "\n/Annots ["; foreach ($o['info']['annot'] as $aId) { $res .= " $aId 0 R"; } $res .= " ]"; } $count = count($o['info']['contents']); if ($count == 1) { $res .= "\n/Contents " . $o['info']['contents'][0] . " 0 R"; } else { if ($count > 1) { $res .= "\n/Contents [\n"; // reverse the page contents so added objects are below normal content //foreach (array_reverse($o['info']['contents']) as $cId) { // Back to normal now that I've got transparency working --Benj foreach ($o['info']['contents'] as $cId) { $res .= "$cId 0 R\n"; } $res .= "]"; } } $res .= "\n>>\nendobj"; return $res; } return null; } /** * the contents objects hold all of the content which appears on pages * * @param $id * @param $action * @param string|array $options * @return null|string */ protected function o_contents($id, $action, $options = '') { if ($action !== 'new') { $o = &$this->objects[$id]; } switch ($action) { case 'new': $this->objects[$id] = ['t' => 'contents', 'c' => '', 'info' => []]; if (mb_strlen($options, '8bit') && intval($options)) { // then this contents is the primary for a page $this->objects[$id]['onPage'] = $options; } else { if ($options === 'raw') { // then this page contains some other type of system object $this->objects[$id]['raw'] = 1; } } break; case 'add': // add more options to the declaration foreach ($options as $k => $v) { $o['info'][$k] = $v; } case 'out': $tmp = $o['c']; $res = "\n$id 0 obj\n"; if (isset($this->objects[$id]['raw'])) { $res .= $tmp; } else { $res .= "<<"; if ($this->compressionReady && $this->options['compression']) { // then implement ZLIB based compression on this content stream $res .= " /Filter /FlateDecode"; $tmp = gzcompress($tmp, 6); } if ($this->encrypted) { $this->encryptInit($id); $tmp = $this->ARC4($tmp); } foreach ($o['info'] as $k => $v) { $res .= "\n/$k $v"; } $res .= "\n/Length " . mb_strlen($tmp, '8bit') . " >>\nstream\n$tmp\nendstream"; } $res .= "\nendobj"; return $res; } return null; } /** * @param $id * @param $action * @return string|null */ protected function o_embedjs($id, $action) { switch ($action) { case 'new': $this->objects[$id] = [ 't' => 'embedjs', 'info' => [ 'Names' => '[(EmbeddedJS) ' . ($id + 1) . ' 0 R]' ] ]; break; case 'out': $o = &$this->objects[$id]; $res = "\n$id 0 obj\n<< "; foreach ($o['info'] as $k => $v) { $res .= "\n/$k $v"; } $res .= "\n>>\nendobj"; return $res; } return null; } /** * @param $id * @param $action * @param string $code * @return null|string */ protected function o_javascript($id, $action, $code = '') { switch ($action) { case 'new': $this->objects[$id] = [ 't' => 'javascript', 'info' => [ 'S' => '/JavaScript', 'JS' => '(' . $this->filterText($code, true, false) . ')', ] ]; break; case 'out': $o = &$this->objects[$id]; $res = "\n$id 0 obj\n<< "; foreach ($o['info'] as $k => $v) { $res .= "\n/$k $v"; } $res .= "\n>>\nendobj"; return $res; } return null; } /** * an image object, will be an XObject in the document, includes description and data * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_image($id, $action, $options = '') { switch ($action) { case 'new': // make the new object $this->objects[$id] = ['t' => 'image', 'data' => &$options['data'], 'info' => []]; $info =& $this->objects[$id]['info']; $info['Type'] = '/XObject'; $info['Subtype'] = '/Image'; $info['Width'] = $options['iw']; $info['Height'] = $options['ih']; if (isset($options['masked']) && $options['masked']) { $info['SMask'] = ($this->numObj - 1) . ' 0 R'; } if (!isset($options['type']) || $options['type'] === 'jpg') { if (!isset($options['channels'])) { $options['channels'] = 3; } switch ($options['channels']) { case 1: $info['ColorSpace'] = '/DeviceGray'; break; case 4: $info['ColorSpace'] = '/DeviceCMYK'; break; default: $info['ColorSpace'] = '/DeviceRGB'; break; } if ($info['ColorSpace'] === '/DeviceCMYK') { $info['Decode'] = '[1 0 1 0 1 0 1 0]'; } $info['Filter'] = '/DCTDecode'; $info['BitsPerComponent'] = 8; } else { if ($options['type'] === 'png') { $info['Filter'] = '/FlateDecode'; $info['DecodeParms'] = '<< /Predictor 15 /Colors ' . $options['ncolor'] . ' /Columns ' . $options['iw'] . ' /BitsPerComponent ' . $options['bitsPerComponent'] . '>>'; if ($options['isMask']) { $info['ColorSpace'] = '/DeviceGray'; } else { if (mb_strlen($options['pdata'], '8bit')) { $tmp = ' [ /Indexed /DeviceRGB ' . (mb_strlen($options['pdata'], '8bit') / 3 - 1) . ' '; $this->numObj++; $this->o_contents($this->numObj, 'new'); $this->objects[$this->numObj]['c'] = $options['pdata']; $tmp .= $this->numObj . ' 0 R'; $tmp .= ' ]'; $info['ColorSpace'] = $tmp; if (isset($options['transparency'])) { $transparency = $options['transparency']; switch ($transparency['type']) { case 'indexed': $tmp = ' [ ' . $transparency['data'] . ' ' . $transparency['data'] . '] '; $info['Mask'] = $tmp; break; case 'color-key': $tmp = ' [ ' . $transparency['r'] . ' ' . $transparency['r'] . $transparency['g'] . ' ' . $transparency['g'] . $transparency['b'] . ' ' . $transparency['b'] . ' ] '; $info['Mask'] = $tmp; break; } } } else { if (isset($options['transparency'])) { $transparency = $options['transparency']; switch ($transparency['type']) { case 'indexed': $tmp = ' [ ' . $transparency['data'] . ' ' . $transparency['data'] . '] '; $info['Mask'] = $tmp; break; case 'color-key': $tmp = ' [ ' . $transparency['r'] . ' ' . $transparency['r'] . ' ' . $transparency['g'] . ' ' . $transparency['g'] . ' ' . $transparency['b'] . ' ' . $transparency['b'] . ' ] '; $info['Mask'] = $tmp; break; } } $info['ColorSpace'] = '/' . $options['color']; } } $info['BitsPerComponent'] = $options['bitsPerComponent']; } } // assign it a place in the named resource dictionary as an external object, according to // the label passed in with it. $this->o_pages($this->currentNode, 'xObject', ['label' => $options['label'], 'objNum' => $id]); // also make sure that we have the right procset object for it. $this->o_procset($this->procsetObjectId, 'add', 'ImageC'); break; case 'out': $o = &$this->objects[$id]; $tmp = &$o['data']; $res = "\n$id 0 obj\n<<"; foreach ($o['info'] as $k => $v) { $res .= "\n/$k $v"; } if ($this->encrypted) { $this->encryptInit($id); $tmp = $this->ARC4($tmp); } $res .= "\n/Length " . mb_strlen($tmp, '8bit') . ">>\nstream\n$tmp\nendstream\nendobj"; return $res; } return null; } /** * graphics state object * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_extGState($id, $action, $options = "") { static $valid_params = [ "LW", "LC", "LC", "LJ", "ML", "D", "RI", "OP", "op", "OPM", "Font", "BG", "BG2", "UCR", "TR", "TR2", "HT", "FL", "SM", "SA", "BM", "SMask", "CA", "ca", "AIS", "TK" ]; switch ($action) { case "new": $this->objects[$id] = ['t' => 'extGState', 'info' => $options]; // Tell the pages about the new resource $this->numStates++; $this->o_pages($this->currentNode, 'extGState', ["objNum" => $id, "stateNum" => $this->numStates]); break; case "out": $o = &$this->objects[$id]; $res = "\n$id 0 obj\n<< /Type /ExtGState\n"; foreach ($o["info"] as $k => $v) { if (!in_array($k, $valid_params)) { continue; } $res .= "/$k $v\n"; } $res .= ">>\nendobj"; return $res; } return null; } /** * @param integer $id * @param string $action * @param mixed $options * @return string */ protected function o_xobject($id, $action, $options = '') { switch ($action) { case 'new': $this->objects[$id] = ['t' => 'xobject', 'info' => $options, 'c' => '']; break; case 'procset': $this->objects[$id]['procset'] = $options; break; case 'font': $this->objects[$id]['fonts'][$options['fontNum']] = [ 'objNum' => $options['objNum'], 'fontNum' => $options['fontNum'] ]; break; case 'xObject': $this->objects[$id]['xObjects'][] = ['objNum' => $options['objNum'], 'label' => $options['label']]; break; case 'out': $o = &$this->objects[$id]; $res = "\n$id 0 obj\n<< /Type /XObject\n"; foreach ($o["info"] as $k => $v) { switch ($k) { case 'Subtype': $res .= "/Subtype /$v\n"; break; case 'bbox': $res .= "/BBox ["; foreach ($v as $value) { $res .= sprintf("%.4F ", $value); } $res .= "]\n"; break; default: $res .= "/$k $v\n"; break; } } $res .= "/Matrix[1.0 0.0 0.0 1.0 0.0 0.0]\n"; $res .= "/Resources <<"; if (isset($o['procset'])) { $res .= "\n/ProcSet " . $o['procset'] . " 0 R"; } else { $res .= "\n/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]"; } if (isset($o['fonts']) && count($o['fonts'])) { $res .= "\n/Font << "; foreach ($o['fonts'] as $finfo) { $res .= "\n/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R"; } $res .= "\n>>"; } if (isset($o['xObjects']) && count($o['xObjects'])) { $res .= "\n/XObject << "; foreach ($o['xObjects'] as $finfo) { $res .= "\n/" . $finfo['label'] . " " . $finfo['objNum'] . " 0 R"; } $res .= "\n>>"; } $res .= "\n>>\n"; $tmp = $o["c"]; if ($this->compressionReady && $this->options['compression']) { // then implement ZLIB based compression on this content stream $res .= " /Filter /FlateDecode\n"; $tmp = gzcompress($tmp, 6); } if ($this->encrypted) { $this->encryptInit($id); $tmp = $this->ARC4($tmp); } $res .= "/Length " . mb_strlen($tmp, '8bit') . " >>\n"; $res .= "stream\n" . $tmp . "\nendstream" . "\nendobj"; return $res; } return null; } /** * @param $id * @param $action * @param string $options * @return null|string */ protected function o_acroform($id, $action, $options = '') { switch ($action) { case "new": $this->o_catalog($this->catalogId, 'acroform', $id); $this->objects[$id] = array('t' => 'acroform', 'info' => $options); break; case 'addfield': $this->objects[$id]['info']['Fields'][] = $options; break; case 'font': $this->objects[$id]['fonts'][$options['fontNum']] = [ 'objNum' => $options['objNum'], 'fontNum' => $options['fontNum'] ]; break; case "out": $o = &$this->objects[$id]; $res = "\n$id 0 obj\n<<"; foreach ($o["info"] as $k => $v) { switch ($k) { case 'Fields': $res .= " /Fields ["; foreach ($v as $i) { $res .= "$i 0 R "; } $res .= "]\n"; break; default: $res .= "/$k $v\n"; } } $res .= "/DR <<\n"; if (isset($o['fonts']) && count($o['fonts'])) { $res .= "/Font << \n"; foreach ($o['fonts'] as $finfo) { $res .= "/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R\n"; } $res .= ">>\n"; } $res .= ">>\n"; $res .= ">>\nendobj"; return $res; } return null; } /** * @param $id * @param $action * @param mixed $options * @return null|string */ protected function o_field($id, $action, $options = '') { switch ($action) { case "new": $this->o_page($options['pageid'], 'annot', $id); $this->o_acroform($this->acroFormId, 'addfield', $id); $this->objects[$id] = ['t' => 'field', 'info' => $options]; break; case 'set': $this->objects[$id]['info'] = array_merge($this->objects[$id]['info'], $options); break; case "out": $o = &$this->objects[$id]; $res = "\n$id 0 obj\n<< /Type /Annot /Subtype /Widget \n"; $encrypted = $this->encrypted; if ($encrypted) { $this->encryptInit($id); } foreach ($o["info"] as $k => $v) { switch ($k) { case 'pageid': $res .= "/P $v 0 R\n"; break; case 'value': if ($encrypted) { $v = $this->filterText($this->ARC4($v), false, false); } $res .= "/V ($v)\n"; break; case 'refvalue': $res .= "/V $v 0 R\n"; break; case 'da': if ($encrypted) { $v = $this->filterText($this->ARC4($v), false, false); } $res .= "/DA ($v)\n"; break; case 'options': $res .= "/Opt [\n"; foreach ($v as $opt) { if ($encrypted) { $opt = $this->filterText($this->ARC4($opt), false, false); } $res .= "($opt)\n"; } $res .= "]\n"; break; case 'rect': $res .= "/Rect ["; foreach ($v as $value) { $res .= sprintf("%.4F ", $value); } $res .= "]\n"; break; case 'appearance': $res .= "/AP << "; foreach ($v as $a => $ref) { $res .= "/$a $ref 0 R "; } $res .= ">>\n"; break; case 'T': if ($encrypted) { $v = $this->filterText($this->ARC4($v), false, false); } $res .= "/T ($v)\n"; break; default: $res .= "/$k $v\n"; } } $res .= ">>\nendobj"; return $res; } return null; } /** * * @param $id * @param $action * @param string $options * @return null|string */ protected function o_sig($id, $action, $options = '') { $sign_maxlen = $this->signatureMaxLen; switch ($action) { case "new": $this->objects[$id] = array('t' => 'sig', 'info' => $options); $this->byteRange[$id] = ['t' => 'sig']; break; case 'byterange': $o = &$this->objects[$id]; $content =& $options['content']; $content_len = strlen($content); $pos = strpos($content, sprintf("/ByteRange [ %'.010d", $id)); $len = strlen('/ByteRange [ ********** ********** ********** ********** ]'); $rangeStartPos = $pos + $len + 1 + 10; // before '<' $content = substr_replace($content, str_pad(sprintf('/ByteRange [ 0 %u %u %u ]', $rangeStartPos, $rangeStartPos + $sign_maxlen + 2, $content_len - 2 - $sign_maxlen - $rangeStartPos), $len, ' ', STR_PAD_RIGHT), $pos, $len); $fuid = uniqid(); $tmpInput = $this->tmp . "/pkcs7.tmp." . $fuid . '.in'; $tmpOutput = $this->tmp . "/pkcs7.tmp." . $fuid . '.out'; if (file_put_contents($tmpInput, substr($content, 0, $rangeStartPos)) === false) { throw new \Exception("Unable to write temporary file for signing."); } if (file_put_contents($tmpInput, substr($content, $rangeStartPos + 2 + $sign_maxlen), FILE_APPEND) === false) { throw new \Exception("Unable to write temporary file for signing."); } if (openssl_pkcs7_sign($tmpInput, $tmpOutput, $o['info']['SignCert'], array($o['info']['PrivKey'], $o['info']['Password']), array(), PKCS7_BINARY | PKCS7_DETACHED) === false) { throw new \Exception("Failed to prepare signature."); } $signature = file_get_contents($tmpOutput); unlink($tmpInput); unlink($tmpOutput); $sign = substr($signature, (strpos($signature, "%%EOF\n\n------") + 13)); list($head, $signature) = explode("\n\n", $sign); $signature = base64_decode(trim($signature)); $signature = current(unpack('H*', $signature)); $signature = str_pad($signature, $sign_maxlen, '0'); $siglen = strlen($signature); if (strlen($signature) > $sign_maxlen) { throw new \Exception("Signature length ($siglen) exceeds the $sign_maxlen limit."); } $content = substr_replace($content, $signature, $rangeStartPos + 1, $sign_maxlen); break; case "out": $res = "\n$id 0 obj\n<<\n"; $encrypted = $this->encrypted; if ($encrypted) { $this->encryptInit($id); } $res .= "/ByteRange " .sprintf("[ %'.010d ********** ********** ********** ]\n", $id); $res .= "/Contents <" . str_pad('', $sign_maxlen, '0') . ">\n"; $res .= "/Filter/Adobe.PPKLite\n"; //PPKMS \n"; $res .= "/Type/Sig/SubFilter/adbe.pkcs7.detached \n"; $date = "D:" . substr_replace(date('YmdHisO'), '\'', -2, 0) . '\''; if ($encrypted) { $date = $this->ARC4($date); } $res .= "/M ($date)\n"; $res .= "/Prop_Build << /App << /Name /DomPDF >> /Filter << /Name /Adobe.PPKLite >> >>\n"; $o = &$this->objects[$id]; foreach ($o['info'] as $k => $v) { switch ($k) { case 'Name': case 'Location': case 'Reason': case 'ContactInfo': if ($v !== null && $v !== '') { $res .= "/$k (" . ($encrypted ? $this->filterText($this->ARC4($v), false, false) : $v) . ") \n"; } break; } } $res .= ">>\nendobj"; return $res; } return null; } /** * encryption object. * * @param $id * @param $action * @param string $options * @return string|null */ protected function o_encryption($id, $action, $options = '') { switch ($action) { case 'new': // make the new object $this->objects[$id] = ['t' => 'encryption', 'info' => $options]; $this->arc4_objnum = $id; break; case 'keys': // figure out the additional parameters required $pad = chr(0x28) . chr(0xBF) . chr(0x4E) . chr(0x5E) . chr(0x4E) . chr(0x75) . chr(0x8A) . chr(0x41) . chr(0x64) . chr(0x00) . chr(0x4E) . chr(0x56) . chr(0xFF) . chr(0xFA) . chr(0x01) . chr(0x08) . chr(0x2E) . chr(0x2E) . chr(0x00) . chr(0xB6) . chr(0xD0) . chr(0x68) . chr(0x3E) . chr(0x80) . chr(0x2F) . chr(0x0C) . chr(0xA9) . chr(0xFE) . chr(0x64) . chr(0x53) . chr(0x69) . chr(0x7A); $info = $this->objects[$id]['info']; $len = mb_strlen($info['owner'], '8bit'); if ($len > 32) { $owner = substr($info['owner'], 0, 32); } else { if ($len < 32) { $owner = $info['owner'] . substr($pad, 0, 32 - $len); } else { $owner = $info['owner']; } } $len = mb_strlen($info['user'], '8bit'); if ($len > 32) { $user = substr($info['user'], 0, 32); } else { if ($len < 32) { $user = $info['user'] . substr($pad, 0, 32 - $len); } else { $user = $info['user']; } } $tmp = $this->md5_16($owner); $okey = substr($tmp, 0, 5); $this->ARC4_init($okey); $ovalue = $this->ARC4($user); $this->objects[$id]['info']['O'] = $ovalue; // now make the u value, phew. $tmp = $this->md5_16( $user . $ovalue . chr($info['p']) . chr(255) . chr(255) . chr(255) . hex2bin($this->fileIdentifier) ); $ukey = substr($tmp, 0, 5); $this->ARC4_init($ukey); $this->encryptionKey = $ukey; $this->encrypted = true; $uvalue = $this->ARC4($pad); $this->objects[$id]['info']['U'] = $uvalue; // initialize the arc4 array break; case 'out': $o = &$this->objects[$id]; $res = "\n$id 0 obj\n<<"; $res .= "\n/Filter /Standard"; $res .= "\n/V 1"; $res .= "\n/R 2"; $res .= "\n/O (" . $this->filterText($o['info']['O'], false, false) . ')'; $res .= "\n/U (" . $this->filterText($o['info']['U'], false, false) . ')'; // and the p-value needs to be converted to account for the twos-complement approach $o['info']['p'] = (($o['info']['p'] ^ 255) + 1) * -1; $res .= "\n/P " . ($o['info']['p']); $res .= "\n>>\nendobj"; return $res; } return null; } protected function o_indirect_references($id, $action, $options = null) { switch ($action) { case 'new': case 'add': if ($id === 0) { $id = ++$this->numObj; $this->o_catalog($this->catalogId, 'names', $id); $this->objects[$id] = ['t' => 'indirect_references', 'info' => $options]; $this->indirectReferenceId = $id; } else { $this->objects[$id]['info'] = array_merge($this->objects[$id]['info'], $options); } break; case 'out': $res = "\n$id 0 obj << "; foreach ($this->objects[$id]['info'] as $referenceObjName => $referenceObjId) { $res .= "/$referenceObjName $referenceObjId 0 R "; } $res .= ">> endobj"; return $res; } return null; } protected function o_names($id, $action, $options = null) { switch ($action) { case 'new': case 'add': if ($id === 0) { $id = ++$this->numObj; $this->objects[$id] = ['t' => 'names', 'info' => [$options]]; $this->o_indirect_references($this->indirectReferenceId, 'add', ['EmbeddedFiles' => $id]); $this->embeddedFilesId = $id; } else { $this->objects[$id]['info'][] = $options; } break; case 'out': $info = &$this->objects[$id]['info']; $res = ''; if (count($info) > 0) { $res = "\n$id 0 obj << /Names [ "; if ($this->encrypted) { $this->encryptInit($id); } foreach ($info as $entry) { if ($this->encrypted) { $filename = $this->ARC4($entry['filename']); } else { $filename = $entry['filename']; } $res .= "($filename) " . $entry['dict_reference'] . " 0 R "; } $res .= "] >> endobj"; } return $res; } return null; } protected function o_embedded_file_dictionary($id, $action, $options = null) { switch ($action) { case 'new': $embeddedFileId = ++$this->numObj; $options['embedded_reference'] = $embeddedFileId; $this->objects[$id] = ['t' => 'embedded_file_dictionary', 'info' => $options]; $this->o_embedded_file($embeddedFileId, 'new', $options); $options['dict_reference'] = $id; $this->o_names($this->embeddedFilesId, 'add', $options); break; case 'out': $info = &$this->objects[$id]['info']; $filename = $this->utf8toUtf16BE($info['filename']); $description = $this->utf8toUtf16BE($info['description']); if ($this->encrypted) { $this->encryptInit($id); $filename = $this->ARC4($filename); $description = $this->ARC4($description); } $filename = $this->filterText($filename, false, false); $description = $this->filterText($description, false, false); $res = "\n$id 0 obj <</Type /Filespec /EF"; $res .= " <</F " . $info['embedded_reference'] . " 0 R >>"; $res .= " /F ($filename) /UF ($filename) /Desc ($description)"; $res .= " >> endobj"; return $res; } return null; } protected function o_embedded_file($id, $action, $options = null): ?string { switch ($action) { case 'new': $this->objects[$id] = ['t' => 'embedded_file', 'info' => $options]; break; case 'out': $info = &$this->objects[$id]['info']; if ($this->compressionReady) { $filepath = $info['filepath']; $checksum = md5_file($filepath); $f = fopen($filepath, "rb"); $file_content_compressed = ''; $deflateContext = deflate_init(ZLIB_ENCODING_DEFLATE, ['level' => 6]); while (($block = fread($f, 8192))) { $file_content_compressed .= deflate_add($deflateContext, $block, ZLIB_NO_FLUSH); } $file_content_compressed .= deflate_add($deflateContext, '', ZLIB_FINISH); $file_size_uncompressed = ftell($f); fclose($f); } else { $file_content = file_get_contents($info['filepath']); $file_size_uncompressed = mb_strlen($file_content, '8bit'); $checksum = md5($file_content); } if ($this->encrypted) { $this->encryptInit($id); $checksum = $this->ARC4($checksum); $file_content_compressed = $this->ARC4($file_content_compressed); } $file_size_compressed = mb_strlen($file_content_compressed, '8bit'); $res = "\n$id 0 obj <</Params <</Size $file_size_uncompressed /CheckSum ($checksum) >>" . " /Type/EmbeddedFile /Filter/FlateDecode" . " /Length $file_size_compressed >> stream\n$file_content_compressed\nendstream\nendobj"; return $res; } return null; } /** * ARC4 functions * A series of function to implement ARC4 encoding in PHP */ /** * calculate the 16 byte version of the 128 bit md5 digest of the string * * @param $string * @return string */ function md5_16($string) { $tmp = md5($string); $out = ''; for ($i = 0; $i <= 30; $i = $i + 2) { $out .= chr(hexdec(substr($tmp, $i, 2))); } return $out; } /** * initialize the encryption for processing a particular object * * @param $id */ function encryptInit($id) { $tmp = $this->encryptionKey; $hex = dechex($id); if (mb_strlen($hex, '8bit') < 6) { $hex = substr('000000', 0, 6 - mb_strlen($hex, '8bit')) . $hex; } $tmp .= chr(hexdec(substr($hex, 4, 2))) . chr(hexdec(substr($hex, 2, 2))) . chr(hexdec(substr($hex, 0, 2))) . chr(0) . chr(0) ; $key = $this->md5_16($tmp); $this->ARC4_init(substr($key, 0, 10)); } /** * initialize the ARC4 encryption * * @param string $key */ function ARC4_init($key = '') { $this->arc4 = ''; // setup the control array if (mb_strlen($key, '8bit') == 0) { return; } $k = ''; while (mb_strlen($k, '8bit') < 256) { $k .= $key; } $k = substr($k, 0, 256); for ($i = 0; $i < 256; $i++) { $this->arc4 .= chr($i); } $j = 0; for ($i = 0; $i < 256; $i++) { $t = $this->arc4[$i]; $j = ($j + ord($t) + ord($k[$i])) % 256; $this->arc4[$i] = $this->arc4[$j]; $this->arc4[$j] = $t; } } /** * ARC4 encrypt a text string * * @param $text * @return string */ function ARC4($text) { $len = mb_strlen($text, '8bit'); $a = 0; $b = 0; $c = $this->arc4; $out = ''; for ($i = 0; $i < $len; $i++) { $a = ($a + 1) % 256; $t = $c[$a]; $b = ($b + ord($t)) % 256; $c[$a] = $c[$b]; $c[$b] = $t; $k = ord($c[(ord($c[$a]) + ord($c[$b])) % 256]); $out .= chr(ord($text[$i]) ^ $k); } return $out; } /** * functions which can be called to adjust or add to the document */ /** * add a link in the document to an external URL * * @param $url * @param $x0 * @param $y0 * @param $x1 * @param $y1 */ function addLink($url, $x0, $y0, $x1, $y1) { $this->numObj++; $info = ['type' => 'link', 'url' => $url, 'rect' => [$x0, $y0, $x1, $y1]]; $this->o_annotation($this->numObj, 'new', $info); } /** * add a link in the document to an internal destination (ie. within the document) * * @param $label * @param $x0 * @param $y0 * @param $x1 * @param $y1 */ function addInternalLink($label, $x0, $y0, $x1, $y1) { $this->numObj++; $info = ['type' => 'ilink', 'label' => $label, 'rect' => [$x0, $y0, $x1, $y1]]; $this->o_annotation($this->numObj, 'new', $info); } /** * set the encryption of the document * can be used to turn it on and/or set the passwords which it will have. * also the functions that the user will have are set here, such as print, modify, add * * @param string $userPass * @param string $ownerPass * @param array $pc */ function setEncryption($userPass = '', $ownerPass = '', $pc = []) { $p = bindec("11000000"); $options = ['print' => 4, 'modify' => 8, 'copy' => 16, 'add' => 32]; foreach ($pc as $k => $v) { if ($v && isset($options[$k])) { $p += $options[$k]; } else { if (isset($options[$v])) { $p += $options[$v]; } } } // implement encryption on the document if ($this->arc4_objnum == 0) { // then the block does not exist already, add it. $this->numObj++; if (mb_strlen($ownerPass) == 0) { $ownerPass = $userPass; } $this->o_encryption($this->numObj, 'new', ['user' => $userPass, 'owner' => $ownerPass, 'p' => $p]); } } /** * should be used for internal checks, not implemented as yet */ function checkAllHere() { } /** * return the pdf stream as a string returned from the function * * @param bool $debug * @return string */ function output($debug = false) { if ($debug) { // turn compression off $this->options['compression'] = false; } if ($this->javascript) { $this->numObj++; $js_id = $this->numObj; $this->o_embedjs($js_id, 'new'); $this->o_javascript(++$this->numObj, 'new', $this->javascript); $id = $this->catalogId; $this->o_indirect_references($this->indirectReferenceId, 'add', ['JavaScript' => $js_id]); } if ($this->fileIdentifier === '') { $tmp = implode('', $this->objects[$this->infoObject]['info']); $this->fileIdentifier = md5('DOMPDF' . __FILE__ . $tmp . microtime() . mt_rand()); } if ($this->arc4_objnum) { $this->o_encryption($this->arc4_objnum, 'keys'); $this->ARC4_init($this->encryptionKey); } $this->checkAllHere(); $xref = []; $content = '%PDF-' . self::PDF_VERSION; $pos = mb_strlen($content, '8bit'); // pre-process o_font objects before output of all objects foreach ($this->objects as $k => $v) { if ($v['t'] === 'font') { $this->o_font($k, 'add'); } } foreach ($this->objects as $k => $v) { $tmp = 'o_' . $v['t']; $cont = $this->$tmp($k, 'out'); $content .= $cont; $xref[] = $pos + 1; //+1 to account for \n at the start of each object $pos += mb_strlen($cont, '8bit'); } $content .= "\nxref\n0 " . (count($xref) + 1) . "\n0000000000 65535 f \n"; foreach ($xref as $p) { $content .= str_pad($p, 10, "0", STR_PAD_LEFT) . " 00000 n \n"; } $content .= "trailer\n<<\n" . '/Size ' . (count($xref) + 1) . "\n" . '/Root 1 0 R' . "\n" . '/Info ' . $this->infoObject . " 0 R\n" ; // if encryption has been applied to this document then add the marker for this dictionary if ($this->arc4_objnum > 0) { $content .= '/Encrypt ' . $this->arc4_objnum . " 0 R\n"; } $content .= '/ID[<' . $this->fileIdentifier . '><' . $this->fileIdentifier . ">]\n"; // account for \n added at start of xref table $pos++; $content .= ">>\nstartxref\n$pos\n%%EOF\n"; if (count($this->byteRange) > 0) { foreach ($this->byteRange as $k => $v) { $tmp = 'o_' . $v['t']; $this->$tmp($k, 'byterange', ['content' => &$content]); } } return $content; } /** * initialize a new document * if this is called on an existing document results may be unpredictable, but the existing document would be lost at minimum * this function is called automatically by the constructor function * * @param array $pageSize */ private function newDocument($pageSize = [0, 0, 612, 792]) { $this->numObj = 0; $this->objects = []; $this->numObj++; $this->o_catalog($this->numObj, 'new'); $this->numObj++; $this->o_outlines($this->numObj, 'new'); $this->numObj++; $this->o_pages($this->numObj, 'new'); $this->o_pages($this->numObj, 'mediaBox', $pageSize); $this->currentNode = 3; $this->numObj++; $this->o_procset($this->numObj, 'new'); $this->numObj++; $this->o_info($this->numObj, 'new'); $this->numObj++; $this->o_page($this->numObj, 'new'); // need to store the first page id as there is no way to get it to the user during // startup $this->firstPageId = $this->currentContents; } /** * open the font file and return a php structure containing it. * first check if this one has been done before and saved in a form more suited to php * note that if a php serialized version does not exist it will try and make one, but will * require write access to the directory to do it... it is MUCH faster to have these serialized * files. * * @param $font */ private function openFont($font) { // assume that $font contains the path and file but not the extension $name = basename($font); $dir = dirname($font); $fontcache = $this->fontcache; if ($fontcache == '') { $fontcache = $dir; } //$name filename without folder and extension of font metrics //$dir folder of font metrics //$fontcache folder of runtime created php serialized version of font metrics. // If this is not given, the same folder as the font metrics will be used. // Storing and reusing serialized versions improves speed much $this->addMessage("openFont: $font - $name"); if (!$this->isUnicode || in_array(mb_strtolower(basename($name)), self::$coreFonts)) { $metrics_name = "$name.afm"; } else { $metrics_name = "$name.ufm"; } $cache_name = "$metrics_name.json"; $this->addMessage("metrics: $metrics_name, cache: $cache_name"); if (file_exists($fontcache . '/' . $cache_name)) { $this->addMessage("openFont: json metrics file exists $fontcache/$cache_name"); $cached_font_info = json_decode(file_get_contents($fontcache . '/' . $cache_name), true); if (!isset($cached_font_info['_version_']) || $cached_font_info['_version_'] != $this->fontcacheVersion) { $this->addMessage('openFont: font cache is out of date, regenerating'); } else { $this->fonts[$font] = $cached_font_info; } } if (!isset($this->fonts[$font]) && file_exists("$dir/$metrics_name")) { // then rebuild the php_<font>.afm file from the <font>.afm file $this->addMessage("openFont: build php file from $dir/$metrics_name"); $data = []; // 20 => 'space' $data['codeToName'] = []; // Since we're not going to enable Unicode for the core fonts we need to use a font-based // setting for Unicode support rather than a global setting. $data['isUnicode'] = (strtolower(substr($metrics_name, -3)) !== 'afm'); $cidtogid = ''; if ($data['isUnicode']) { $cidtogid = str_pad('', 256 * 256 * 2, "\x00"); } $file = file("$dir/$metrics_name"); foreach ($file as $rowA) { $row = trim($rowA); $pos = strpos($row, ' '); if ($pos) { // then there must be some keyword $key = substr($row, 0, $pos); switch ($key) { case 'FontName': case 'FullName': case 'FamilyName': case 'PostScriptName': case 'Weight': case 'ItalicAngle': case 'IsFixedPitch': case 'CharacterSet': case 'UnderlinePosition': case 'UnderlineThickness': case 'Version': case 'EncodingScheme': case 'CapHeight': case 'XHeight': case 'Ascender': case 'Descender': case 'StdHW': case 'StdVW': case 'StartCharMetrics': case 'FontHeightOffset': // OAR - Added so we can offset the height calculation of a Windows font. Otherwise it's too big. $data[$key] = trim(substr($row, $pos)); break; case 'FontBBox': $data[$key] = explode(' ', trim(substr($row, $pos))); break; //C 39 ; WX 222 ; N quoteright ; B 53 463 157 718 ; case 'C': // Found in AFM files $bits = explode(';', trim($row)); $dtmp = ['C' => null, 'N' => null, 'WX' => null, 'B' => []]; foreach ($bits as $bit) { $bits2 = explode(' ', trim($bit)); if (mb_strlen($bits2[0], '8bit') == 0) { continue; } if (count($bits2) > 2) { $dtmp[$bits2[0]] = []; for ($i = 1; $i < count($bits2); $i++) { $dtmp[$bits2[0]][] = $bits2[$i]; } } else { if (count($bits2) == 2) { $dtmp[$bits2[0]] = $bits2[1]; } } } $c = (int)$dtmp['C']; $n = $dtmp['N']; $width = floatval($dtmp['WX']); if ($c >= 0) { if (!ctype_xdigit($n) || $c != hexdec($n)) { $data['codeToName'][$c] = $n; } $data['C'][$c] = $width; } elseif (isset($n)) { $data['C'][$n] = $width; } if (!isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') { $data['MissingWidth'] = $width; } break; // U 827 ; WX 0 ; N squaresubnosp ; G 675 ; case 'U': // Found in UFM files if (!$data['isUnicode']) { break; } $bits = explode(';', trim($row)); $dtmp = ['G' => null, 'N' => null, 'U' => null, 'WX' => null]; foreach ($bits as $bit) { $bits2 = explode(' ', trim($bit)); if (mb_strlen($bits2[0], '8bit') === 0) { continue; } if (count($bits2) > 2) { $dtmp[$bits2[0]] = []; for ($i = 1; $i < count($bits2); $i++) { $dtmp[$bits2[0]][] = $bits2[$i]; } } else { if (count($bits2) == 2) { $dtmp[$bits2[0]] = $bits2[1]; } } } $c = (int)$dtmp['U']; $n = $dtmp['N']; $glyph = $dtmp['G']; $width = floatval($dtmp['WX']); if ($c >= 0) { // Set values in CID to GID map if ($c >= 0 && $c < 0xFFFF && $glyph) { $cidtogid[$c * 2] = chr($glyph >> 8); $cidtogid[$c * 2 + 1] = chr($glyph & 0xFF); } if (!ctype_xdigit($n) || $c != hexdec($n)) { $data['codeToName'][$c] = $n; } $data['C'][$c] = $width; } elseif (isset($n)) { $data['C'][$n] = $width; } if (!isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') { $data['MissingWidth'] = $width; } break; case 'KPX': break; // don't include them as they are not used yet //KPX Adieresis yacute -40 /*$bits = explode(' ', trim($row)); $data['KPX'][$bits[1]][$bits[2]] = $bits[3]; break;*/ } } } if ($this->compressionReady && $this->options['compression']) { // then implement ZLIB based compression on CIDtoGID string $data['CIDtoGID_Compressed'] = true; $cidtogid = gzcompress($cidtogid, 6); } $data['CIDtoGID'] = base64_encode($cidtogid); $data['_version_'] = $this->fontcacheVersion; $this->fonts[$font] = $data; //Because of potential trouble with php safe mode, expect that the folder already exists. //If not existing, this will hit performance because of missing cached results. if (is_dir($fontcache) && is_writable($fontcache)) { file_put_contents("$fontcache/$cache_name", json_encode($data, JSON_PRETTY_PRINT)); } $data = null; } if (!isset($this->fonts[$font])) { $this->addMessage("openFont: no font file found for $font. Do you need to run load_font.php?"); } } /** * if the font is not loaded then load it and make the required object * else just make it the current font * the encoding array can contain 'encoding'=> 'none','WinAnsiEncoding','MacRomanEncoding' or 'MacExpertEncoding' * note that encoding='none' will need to be used for symbolic fonts * and 'differences' => an array of mappings between numbers 0->255 and character names. * * @param string $fontName * @param string $encoding * @param bool $set * @param bool $isSubsetting * @return int * @throws FontNotFoundException */ function selectFont($fontName, $encoding = '', $set = true, $isSubsetting = true) { if ($fontName === null || $fontName === '') { return $this->currentFontNum; } $ext = substr($fontName, -4); if ($ext === '.afm' || $ext === '.ufm') { $fontName = substr($fontName, 0, mb_strlen($fontName) - 4); } if (!isset($this->fonts[$fontName])) { $this->addMessage("selectFont: selecting - $fontName - $encoding, $set"); // load the file $this->openFont($fontName); if (isset($this->fonts[$fontName])) { $this->numObj++; $this->numFonts++; $font = &$this->fonts[$fontName]; $name = basename($fontName); $options = ['name' => $name, 'fontFileName' => $fontName, 'isSubsetting' => $isSubsetting]; if (is_array($encoding)) { // then encoding and differences might be set if (isset($encoding['encoding'])) { $options['encoding'] = $encoding['encoding']; } if (isset($encoding['differences'])) { $options['differences'] = $encoding['differences']; } } else { if (mb_strlen($encoding, '8bit')) { // then perhaps only the encoding has been set $options['encoding'] = $encoding; } } $this->o_font($this->numObj, 'new', $options); if (file_exists("$fontName.ttf")) { $fileSuffix = 'ttf'; } elseif (file_exists("$fontName.TTF")) { $fileSuffix = 'TTF'; } elseif (file_exists("$fontName.pfb")) { $fileSuffix = 'pfb'; } elseif (file_exists("$fontName.PFB")) { $fileSuffix = 'PFB'; } else { $fileSuffix = ''; } $font['fileSuffix'] = $fileSuffix; $font['fontNum'] = $this->numFonts; $font['isSubsetting'] = $isSubsetting && $font['isUnicode'] && strtolower($fileSuffix) === 'ttf'; // also set the differences here, note that this means that these will take effect only the //first time that a font is selected, else they are ignored if (isset($options['differences'])) { $font['differences'] = $options['differences']; } } } if ($set && isset($this->fonts[$fontName])) { // so if for some reason the font was not set in the last one then it will not be selected $this->currentBaseFont = $fontName; // the next lines mean that if a new font is selected, then the current text state will be // applied to it as well. $this->currentFont = $this->currentBaseFont; $this->currentFontNum = $this->fonts[$this->currentFont]['fontNum']; } return $this->currentFontNum; } /** * sets up the current font, based on the font families, and the current text state * note that this system is quite flexible, a bold-italic font can be completely different to a * italic-bold font, and even bold-bold will have to be defined within the family to have meaning * This function is to be called whenever the currentTextState is changed, it will update * the currentFont setting to whatever the appropriate family one is. * If the user calls selectFont themselves then that will reset the currentBaseFont, and the currentFont * This function will change the currentFont to whatever it should be, but will not change the * currentBaseFont. */ private function setCurrentFont() { // if (strlen($this->currentBaseFont) == 0){ // // then assume an initial font // $this->selectFont($this->defaultFont); // } // $cf = substr($this->currentBaseFont,strrpos($this->currentBaseFont,'/')+1); // if (strlen($this->currentTextState) // && isset($this->fontFamilies[$cf]) // && isset($this->fontFamilies[$cf][$this->currentTextState])){ // // then we are in some state or another // // and this font has a family, and the current setting exists within it // // select the font, then return it // $nf = substr($this->currentBaseFont,0,strrpos($this->currentBaseFont,'/')+1).$this->fontFamilies[$cf][$this->currentTextState]; // $this->selectFont($nf,'',0); // $this->currentFont = $nf; // $this->currentFontNum = $this->fonts[$nf]['fontNum']; // } else { // // the this font must not have the right family member for the current state // // simply assume the base font $this->currentFont = $this->currentBaseFont; $this->currentFontNum = $this->fonts[$this->currentFont]['fontNum']; // } } /** * function for the user to find out what the ID is of the first page that was created during * startup - useful if they wish to add something to it later. * * @return int */ function getFirstPageId() { return $this->firstPageId; } /** * add content to the currently active object * * @param $content */ private function addContent($content) { $this->objects[$this->currentContents]['c'] .= $content; } /** * sets the color for fill operations * * @param array $color * @param bool $force */ function setColor($color, $force = false) { $new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null]; if (!$force && $this->currentColor == $new_color) { return; } if (isset($new_color[3])) { $this->currentColor = $new_color; $this->addContent(vsprintf("\n%.3F %.3F %.3F %.3F k", $this->currentColor)); } else { if (isset($new_color[2])) { $this->currentColor = $new_color; $this->addContent(vsprintf("\n%.3F %.3F %.3F rg", $this->currentColor)); } } } /** * @param string $fillRule */ function setFillRule($fillRule) { if (!in_array($fillRule, ["nonzero", "evenodd"])) { return; } $this->fillRule = $fillRule; } /** * sets the color for stroke operations * * @param array $color * @param bool $force */ function setStrokeColor($color, $force = false) { $new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null]; if (!$force && $this->currentStrokeColor == $new_color) { return; } if (isset($new_color[3])) { $this->currentStrokeColor = $new_color; $this->addContent(vsprintf("\n%.3F %.3F %.3F %.3F K", $this->currentStrokeColor)); } else { if (isset($new_color[2])) { $this->currentStrokeColor = $new_color; $this->addContent(vsprintf("\n%.3F %.3F %.3F RG", $this->currentStrokeColor)); } } } /** * Set the graphics state for compositions * * @param $parameters */ function setGraphicsState($parameters) { // Create a new graphics state object if necessary if (($gstate = array_search($parameters, $this->gstates)) === false) { $this->numObj++; $this->o_extGState($this->numObj, 'new', $parameters); $gstate = $this->numStates; $this->gstates[$gstate] = $parameters; } $this->addContent("\n/GS$gstate gs"); } /** * Set current blend mode & opacity for lines. * * Valid blend modes are: * * Normal, Multiply, Screen, Overlay, Darken, Lighten, * ColorDogde, ColorBurn, HardLight, SoftLight, Difference, * Exclusion * * @param string $mode the blend mode to use * @param float $opacity 0.0 fully transparent, 1.0 fully opaque */ function setLineTransparency($mode, $opacity) { static $blend_modes = [ "Normal", "Multiply", "Screen", "Overlay", "Darken", "Lighten", "ColorDogde", "ColorBurn", "HardLight", "SoftLight", "Difference", "Exclusion" ]; if (!in_array($mode, $blend_modes)) { $mode = "Normal"; } if (is_null($this->currentLineTransparency)) { $this->currentLineTransparency = []; } if ($mode === (key_exists('mode', $this->currentLineTransparency) ? $this->currentLineTransparency['mode'] : '') && $opacity === (key_exists('opacity', $this->currentLineTransparency) ? $this->currentLineTransparency["opacity"] : '')) { return; } $this->currentLineTransparency["mode"] = $mode; $this->currentLineTransparency["opacity"] = $opacity; $options = [ "BM" => "/$mode", "CA" => (float)$opacity ]; $this->setGraphicsState($options); } /** * Set current blend mode & opacity for filled objects. * * Valid blend modes are: * * Normal, Multiply, Screen, Overlay, Darken, Lighten, * ColorDogde, ColorBurn, HardLight, SoftLight, Difference, * Exclusion * * @param string $mode the blend mode to use * @param float $opacity 0.0 fully transparent, 1.0 fully opaque */ function setFillTransparency($mode, $opacity) { static $blend_modes = [ "Normal", "Multiply", "Screen", "Overlay", "Darken", "Lighten", "ColorDogde", "ColorBurn", "HardLight", "SoftLight", "Difference", "Exclusion" ]; if (!in_array($mode, $blend_modes)) { $mode = "Normal"; } if (is_null($this->currentFillTransparency)) { $this->currentFillTransparency = []; } if ($mode === (key_exists('mode', $this->currentFillTransparency) ? $this->currentFillTransparency['mode'] : '') && $opacity === (key_exists('opacity', $this->currentFillTransparency) ? $this->currentFillTransparency["opacity"] : '')) { return; } $this->currentFillTransparency["mode"] = $mode; $this->currentFillTransparency["opacity"] = $opacity; $options = [ "BM" => "/$mode", "ca" => (float)$opacity, ]; $this->setGraphicsState($options); } /** * draw a line from one set of coordinates to another * * @param float $x1 * @param float $y1 * @param float $x2 * @param float $y2 * @param bool $stroke */ function line($x1, $y1, $x2, $y2, $stroke = true) { $this->addContent(sprintf("\n%.3F %.3F m %.3F %.3F l", $x1, $y1, $x2, $y2)); if ($stroke) { $this->addContent(' S'); } } /** * draw a bezier curve based on 4 control points * * @param float $x0 * @param float $y0 * @param float $x1 * @param float $y1 * @param float $x2 * @param float $y2 * @param float $x3 * @param float $y3 */ function curve($x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3) { // in the current line style, draw a bezier curve from (x0,y0) to (x3,y3) using the other two points // as the control points for the curve. $this->addContent( sprintf("\n%.3F %.3F m %.3F %.3F %.3F %.3F %.3F %.3F c S", $x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3) ); } /** * draw a part of an ellipse * * @param float $x0 * @param float $y0 * @param float $astart * @param float $afinish * @param float $r1 * @param float $r2 * @param float $angle * @param int $nSeg */ function partEllipse($x0, $y0, $astart, $afinish, $r1, $r2 = 0, $angle = 0, $nSeg = 8) { $this->ellipse($x0, $y0, $r1, $r2, $angle, $nSeg, $astart, $afinish, false); } /** * draw a filled ellipse * * @param float $x0 * @param float $y0 * @param float $r1 * @param float $r2 * @param float $angle * @param int $nSeg * @param float $astart * @param float $afinish */ function filledEllipse($x0, $y0, $r1, $r2 = 0, $angle = 0, $nSeg = 8, $astart = 0, $afinish = 360) { $this->ellipse($x0, $y0, $r1, $r2, $angle, $nSeg, $astart, $afinish, true, true); } /** * @param float $x * @param float $y */ function lineTo($x, $y) { $this->addContent(sprintf("\n%.3F %.3F l", $x, $y)); } /** * @param float $x * @param float $y */ function moveTo($x, $y) { $this->addContent(sprintf("\n%.3F %.3F m", $x, $y)); } /** * draw a bezier curve based on 4 control points * * @param float $x1 * @param float $y1 * @param float $x2 * @param float $y2 * @param float $x3 * @param float $y3 */ function curveTo($x1, $y1, $x2, $y2, $x3, $y3) { $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F %.3F %.3F c", $x1, $y1, $x2, $y2, $x3, $y3)); } /** * draw a bezier curve based on 4 control points * * @param float $cpx * @param float $cpy * @param float $x * @param float $y */ function quadTo($cpx, $cpy, $x, $y) { $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F v", $cpx, $cpy, $x, $y)); } function closePath() { $this->addContent(' h'); } function endPath() { $this->addContent(' n'); } /** * draw an ellipse * note that the part and filled ellipse are just special cases of this function * * draws an ellipse in the current line style * centered at $x0,$y0, radii $r1,$r2 * if $r2 is not set, then a circle is drawn * from $astart to $afinish, measured in degrees, running anti-clockwise from the right hand side of the ellipse. * nSeg is not allowed to be less than 2, as this will simply draw a line (and will even draw a * pretty crappy shape at 2, as we are approximating with bezier curves. * * @param float $x0 * @param float $y0 * @param float $r1 * @param float $r2 * @param float $angle * @param int $nSeg * @param float $astart * @param float $afinish * @param bool $close * @param bool $fill * @param bool $stroke * @param bool $incomplete */ function ellipse( $x0, $y0, $r1, $r2 = 0, $angle = 0, $nSeg = 8, $astart = 0, $afinish = 360, $close = true, $fill = false, $stroke = true, $incomplete = false ) { if ($r1 == 0) { return; } if ($r2 == 0) { $r2 = $r1; } if ($nSeg < 2) { $nSeg = 2; } $astart = deg2rad((float)$astart); $afinish = deg2rad((float)$afinish); $totalAngle = $afinish - $astart; $dt = $totalAngle / $nSeg; $dtm = $dt / 3; if ($angle != 0) { $a = -1 * deg2rad((float)$angle); $this->addContent( sprintf("\n q %.3F %.3F %.3F %.3F %.3F %.3F cm", cos($a), -sin($a), sin($a), cos($a), $x0, $y0) ); $x0 = 0; $y0 = 0; } $t1 = $astart; $a0 = $x0 + $r1 * cos($t1); $b0 = $y0 + $r2 * sin($t1); $c0 = -$r1 * sin($t1); $d0 = $r2 * cos($t1); if (!$incomplete) { $this->addContent(sprintf("\n%.3F %.3F m ", $a0, $b0)); } for ($i = 1; $i <= $nSeg; $i++) { // draw this bit of the total curve $t1 = $i * $dt + $astart; $a1 = $x0 + $r1 * cos($t1); $b1 = $y0 + $r2 * sin($t1); $c1 = -$r1 * sin($t1); $d1 = $r2 * cos($t1); $this->addContent( sprintf( "\n%.3F %.3F %.3F %.3F %.3F %.3F c", ($a0 + $c0 * $dtm), ($b0 + $d0 * $dtm), ($a1 - $c1 * $dtm), ($b1 - $d1 * $dtm), $a1, $b1 ) ); $a0 = $a1; $b0 = $b1; $c0 = $c1; $d0 = $d1; } if (!$incomplete) { if ($fill) { $this->addContent(' f'); } if ($stroke) { if ($close) { $this->addContent(' s'); // small 's' signifies closing the path as well } else { $this->addContent(' S'); } } } if ($angle != 0) { $this->addContent(' Q'); } } /** * this sets the line drawing style. * width, is the thickness of the line in user units * cap is the type of cap to put on the line, values can be 'butt','round','square' * where the diffference between 'square' and 'butt' is that 'square' projects a flat end past the * end of the line. * join can be 'miter', 'round', 'bevel' * dash is an array which sets the dash pattern, is a series of length values, which are the lengths of the * on and off dashes. * (2) represents 2 on, 2 off, 2 on , 2 off ... * (2,1) is 2 on, 1 off, 2 on, 1 off.. etc * phase is a modifier on the dash pattern which is used to shift the point at which the pattern starts. * * @param float $width * @param string $cap * @param string $join * @param array $dash * @param int $phase */ function setLineStyle($width = 1, $cap = '', $join = '', $dash = '', $phase = 0) { // this is quite inefficient in that it sets all the parameters whenever 1 is changed, but will fix another day $string = ''; if ($width > 0) { $string .= "$width w"; } $ca = ['butt' => 0, 'round' => 1, 'square' => 2]; if (isset($ca[$cap])) { $string .= " $ca[$cap] J"; } $ja = ['miter' => 0, 'round' => 1, 'bevel' => 2]; if (isset($ja[$join])) { $string .= " $ja[$join] j"; } if (is_array($dash)) { $string .= ' [ ' . implode(' ', $dash) . " ] $phase d"; } $this->currentLineStyle = $string; $this->addContent("\n$string"); } /** * draw a polygon, the syntax for this is similar to the GD polygon command * * @param float[] $p * @param bool $fill */ public function polygon(array $p, bool $fill = false): void { $this->addContent(sprintf("\n%.3F %.3F m ", $p[0], $p[1])); $n = count($p); for ($i = 2; $i < $n; $i = $i + 2) { $this->addContent(sprintf("%.3F %.3F l ", $p[$i], $p[$i + 1])); } if ($fill) { $this->addContent(' f'); } else { $this->addContent(' S'); } } /** * a filled rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not * the coordinates of the upper-right corner * * @param float $x1 * @param float $y1 * @param float $width * @param float $height */ function filledRectangle($x1, $y1, $width, $height) { $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re f", $x1, $y1, $width, $height)); } /** * draw a rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not * the coordinates of the upper-right corner * * @param float $x1 * @param float $y1 * @param float $width * @param float $height */ function rectangle($x1, $y1, $width, $height) { $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re S", $x1, $y1, $width, $height)); } /** * draw a rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not * the coordinates of the upper-right corner * * @param float $x1 * @param float $y1 * @param float $width * @param float $height */ function rect($x1, $y1, $width, $height) { $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re", $x1, $y1, $width, $height)); } function stroke(bool $close = false) { $this->addContent("\n" . ($close ? "s" : "S")); } function fill() { $this->addContent("\nf" . ($this->fillRule === "evenodd" ? "*" : "")); } function fillStroke(bool $close = false) { $this->addContent("\n" . ($close ? "b" : "B") . ($this->fillRule === "evenodd" ? "*" : "")); } /** * @param string $subtype * @param integer $x * @param integer $y * @param integer $w * @param integer $h * @return int */ function addXObject($subtype, $x, $y, $w, $h) { $id = ++$this->numObj; $this->o_xobject($id, 'new', ['Subtype' => $subtype, 'bbox' => [$x, $y, $w, $h]]); return $id; } /** * @param integer $numXObject * @param string $type * @param array $options */ function setXObjectResource($numXObject, $type, $options) { if (in_array($type, ['procset', 'font', 'xObject'])) { $this->o_xobject($numXObject, $type, $options); } } /** * add signature * * $fieldSigId = $cpdf->addFormField(Cpdf::ACROFORM_FIELD_SIG, 'Signature1', 0, 0, 0, 0, 0); * * $signatureId = $cpdf->addSignature([ * 'signcert' => file_get_contents('dompdf.crt'), * 'privkey' => file_get_contents('dompdf.key'), * 'password' => 'password', * 'name' => 'DomPDF DEMO', * 'location' => 'Home', * 'reason' => 'First Form', * 'contactinfo' => 'info' * ]); * $cpdf->setFormFieldValue($fieldSigId, "$signatureId 0 R"); * * @param string $signcert * @param string $privkey * @param string $password * @param string|null $name * @param string|null $location * @param string|null $reason * @param string|null $contactinfo * @return int */ function addSignature($signcert, $privkey, $password = '', $name = null, $location = null, $reason = null, $contactinfo = null) { $sigId = ++$this->numObj; $this->o_sig($sigId, 'new', [ 'SignCert' => $signcert, 'PrivKey' => $privkey, 'Password' => $password, 'Name' => $name, 'Location' => $location, 'Reason' => $reason, 'ContactInfo' => $contactinfo ]); return $sigId; } /** * add field to form * * @param string $type ACROFORM_FIELD_* * @param string $name * @param $x0 * @param $y0 * @param $x1 * @param $y1 * @param integer $ff Field Flag ACROFORM_FIELD_*_* * @param float $size * @param array $color * @return int */ public function addFormField($type, $name, $x0, $y0, $x1, $y1, $ff = 0, $size = 10.0, $color = [0, 0, 0]) { if (!$this->numFonts) { $this->selectFont($this->defaultFont); } $color = implode(' ', $color) . ' rg'; $currentFontNum = $this->currentFontNum; $font = array_filter( $this->objects[$this->currentNode]['info']['fonts'], function ($item) use ($currentFontNum) { return $item['fontNum'] == $currentFontNum; } ); $this->o_acroform($this->acroFormId, 'font', ['objNum' => $font[0]['objNum'], 'fontNum' => $font[0]['fontNum']]); $fieldId = ++$this->numObj; $this->o_field($fieldId, 'new', [ 'rect' => [$x0, $y0, $x1, $y1], 'F' => 4, 'FT' => "/$type", 'T' => $name, 'Ff' => $ff, 'pageid' => $this->currentPage, 'da' => "$color /F$this->currentFontNum " . sprintf('%.1F Tf ', $size) ]); return $fieldId; } /** * set Field value * * @param integer $numFieldObj * @param string $value */ public function setFormFieldValue($numFieldObj, $value) { $this->o_field($numFieldObj, 'set', ['value' => $value]); } /** * set Field value (reference) * * @param integer $numFieldObj * @param integer $numObj Object number */ public function setFormFieldRefValue($numFieldObj, $numObj) { $this->o_field($numFieldObj, 'set', ['refvalue' => $numObj]); } /** * set Field Appearanc (reference) * * @param integer $numFieldObj * @param integer $normalNumObj * @param integer|null $rolloverNumObj * @param integer|null $downNumObj */ public function setFormFieldAppearance($numFieldObj, $normalNumObj, $rolloverNumObj = null, $downNumObj = null) { $appearance['N'] = $normalNumObj; if ($rolloverNumObj !== null) { $appearance['R'] = $rolloverNumObj; } if ($downNumObj !== null) { $appearance['D'] = $downNumObj; } $this->o_field($numFieldObj, 'set', ['appearance' => $appearance]); } /** * set Choice Field option values * * @param integer $numFieldObj * @param array $value */ public function setFormFieldOpt($numFieldObj, $value) { $this->o_field($numFieldObj, 'set', ['options' => $value]); } /** * add form to document * * @param integer $sigFlags * @param boolean $needAppearances */ public function addForm($sigFlags = 0, $needAppearances = false) { $this->acroFormId = ++$this->numObj; $this->o_acroform($this->acroFormId, 'new', [ 'NeedAppearances' => $needAppearances ? 'true' : 'false', 'SigFlags' => $sigFlags ]); } /** * save the current graphic state */ function save() { // we must reset the color cache or it will keep bad colors after clipping $this->currentColor = null; $this->currentStrokeColor = null; $this->addContent("\nq"); } /** * restore the last graphic state */ function restore() { // we must reset the color cache or it will keep bad colors after clipping $this->currentColor = null; $this->currentStrokeColor = null; $this->addContent("\nQ"); } /** * draw a clipping rectangle, all the elements added after this will be clipped * * @param float $x1 * @param float $y1 * @param float $width * @param float $height */ function clippingRectangle($x1, $y1, $width, $height) { $this->save(); $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re W n", $x1, $y1, $width, $height)); } /** * draw a clipping rounded rectangle, all the elements added after this will be clipped * * @param float $x1 * @param float $y1 * @param float $w * @param float $h * @param float $rTL * @param float $rTR * @param float $rBR * @param float $rBL */ function clippingRectangleRounded($x1, $y1, $w, $h, $rTL, $rTR, $rBR, $rBL) { $this->save(); // start: top edge, left end $this->addContent(sprintf("\n%.3F %.3F m ", $x1, $y1 - $rTL + $h)); // line: bottom edge, left end $this->addContent(sprintf("\n%.3F %.3F l ", $x1, $y1 + $rBL)); // curve: bottom-left corner $this->ellipse($x1 + $rBL, $y1 + $rBL, $rBL, 0, 0, 8, 180, 270, false, false, false, true); // line: right edge, bottom end $this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $w - $rBR, $y1)); // curve: bottom-right corner $this->ellipse($x1 + $w - $rBR, $y1 + $rBR, $rBR, 0, 0, 8, 270, 360, false, false, false, true); // line: right edge, top end $this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $w, $y1 + $h - $rTR)); // curve: bottom-right corner $this->ellipse($x1 + $w - $rTR, $y1 + $h - $rTR, $rTR, 0, 0, 8, 0, 90, false, false, false, true); // line: bottom edge, right end $this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $rTL, $y1 + $h)); // curve: top-right corner $this->ellipse($x1 + $rTL, $y1 + $h - $rTL, $rTL, 0, 0, 8, 90, 180, false, false, false, true); // line: top edge, left end $this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $rBL, $y1)); // Close & clip $this->addContent(" W n"); } /** * draw a clipping polygon, the syntax for this is similar to the GD polygon command * * @param float[] $p */ public function clippingPolygon(array $p): void { $this->save(); $this->addContent(sprintf("\n%.3F %.3F m ", $p[0], $p[1])); $n = count($p); for ($i = 2; $i < $n; $i = $i + 2) { $this->addContent(sprintf("%.3F %.3F l ", $p[$i], $p[$i + 1])); } $this->addContent("W n"); } /** * ends the last clipping shape */ function clippingEnd() { $this->restore(); } /** * scale * * @param float $s_x scaling factor for width as percent * @param float $s_y scaling factor for height as percent * @param float $x Origin abscissa * @param float $y Origin ordinate */ function scale($s_x, $s_y, $x, $y) { $y = $this->currentPageSize["height"] - $y; $tm = [ $s_x, 0, 0, $s_y, $x * (1 - $s_x), $y * (1 - $s_y) ]; $this->transform($tm); } /** * translate * * @param float $t_x movement to the right * @param float $t_y movement to the bottom */ function translate($t_x, $t_y) { $tm = [ 1, 0, 0, 1, $t_x, -$t_y ]; $this->transform($tm); } /** * rotate * * @param float $angle angle in degrees for counter-clockwise rotation * @param float $x Origin abscissa * @param float $y Origin ordinate */ function rotate($angle, $x, $y) { $y = $this->currentPageSize["height"] - $y; $a = deg2rad($angle); $cos_a = cos($a); $sin_a = sin($a); $tm = [ $cos_a, -$sin_a, $sin_a, $cos_a, $x - $sin_a * $y - $cos_a * $x, $y - $cos_a * $y + $sin_a * $x, ]; $this->transform($tm); } /** * skew * * @param float $angle_x * @param float $angle_y * @param float $x Origin abscissa * @param float $y Origin ordinate */ function skew($angle_x, $angle_y, $x, $y) { $y = $this->currentPageSize["height"] - $y; $tan_x = tan(deg2rad($angle_x)); $tan_y = tan(deg2rad($angle_y)); $tm = [ 1, -$tan_y, -$tan_x, 1, $tan_x * $y, $tan_y * $x, ]; $this->transform($tm); } /** * apply graphic transformations * * @param array $tm transformation matrix */ function transform($tm) { $this->addContent(vsprintf("\n %.3F %.3F %.3F %.3F %.3F %.3F cm", $tm)); } /** * add a new page to the document * this also makes the new page the current active object * * @param int $insert * @param int $id * @param string $pos * @return int */ function newPage($insert = 0, $id = 0, $pos = 'after') { // if there is a state saved, then go up the stack closing them // then on the new page, re-open them with the right setings if ($this->nStateStack) { for ($i = $this->nStateStack; $i >= 1; $i--) { $this->restoreState($i); } } $this->numObj++; if ($insert) { // the id from the ezPdf class is the id of the contents of the page, not the page object itself // query that object to find the parent $rid = $this->objects[$id]['onPage']; $opt = ['rid' => $rid, 'pos' => $pos]; $this->o_page($this->numObj, 'new', $opt); } else { $this->o_page($this->numObj, 'new'); } // if there is a stack saved, then put that onto the page if ($this->nStateStack) { for ($i = 1; $i <= $this->nStateStack; $i++) { $this->saveState($i); } } // and if there has been a stroke or fill color set, then transfer them if (isset($this->currentColor)) { $this->setColor($this->currentColor, true); } if (isset($this->currentStrokeColor)) { $this->setStrokeColor($this->currentStrokeColor, true); } // if there is a line style set, then put this in too if (mb_strlen($this->currentLineStyle, '8bit')) { $this->addContent("\n$this->currentLineStyle"); } // the call to the o_page object set currentContents to the present page, so this can be returned as the page id return $this->currentContents; } /** * Streams the PDF to the client. * * @param string $filename The filename to present to the client. * @param array $options Associative array: 'compress' => 1 or 0 (default 1); 'Attachment' => 1 or 0 (default 1). */ function stream($filename = "document.pdf", $options = []) { if (headers_sent()) { die("Unable to stream pdf: headers already sent"); } if (!isset($options["compress"])) $options["compress"] = true; if (!isset($options["Attachment"])) $options["Attachment"] = true; $debug = !$options['compress']; $tmp = ltrim($this->output($debug)); header("Cache-Control: private"); header("Content-Type: application/pdf"); header("Content-Length: " . mb_strlen($tmp, "8bit")); $filename = str_replace(["\n", "'"], "", basename($filename, ".pdf")) . ".pdf"; $attachment = $options["Attachment"] ? "attachment" : "inline"; $encoding = mb_detect_encoding($filename); $fallbackfilename = mb_convert_encoding($filename, "ISO-8859-1", $encoding); $fallbackfilename = str_replace("\"", "", $fallbackfilename); $encodedfilename = rawurlencode($filename); $contentDisposition = "Content-Disposition: $attachment; filename=\"$fallbackfilename\""; if ($fallbackfilename !== $filename) { $contentDisposition .= "; filename*=UTF-8''$encodedfilename"; } header($contentDisposition); echo $tmp; flush(); } /** * return the height in units of the current font in the given size * * @param float $size * * @return float */ public function getFontHeight(float $size): float { if (!$this->numFonts) { $this->selectFont($this->defaultFont); } $font = $this->fonts[$this->currentFont]; // for the current font, and the given size, what is the height of the font in user units if (isset($font['Ascender']) && isset($font['Descender'])) { $h = $font['Ascender'] - $font['Descender']; } else { $h = $font['FontBBox'][3] - $font['FontBBox'][1]; } // have to adjust by a font offset for Windows fonts. unfortunately it looks like // the bounding box calculations are wrong and I don't know why. if (isset($font['FontHeightOffset'])) { // For CourierNew from Windows this needs to be -646 to match the // Adobe native Courier font. // // For FreeMono from GNU this needs to be -337 to match the // Courier font. // // Both have been added manually to the .afm and .ufm files. $h += (int)$font['FontHeightOffset']; } return $size * $h / 1000; } /** * @param float $size * * @return float */ public function getFontXHeight(float $size): float { if (!$this->numFonts) { $this->selectFont($this->defaultFont); } $font = $this->fonts[$this->currentFont]; // for the current font, and the given size, what is the height of the font in user units if (isset($font['XHeight'])) { $xh = $font['Ascender'] - $font['Descender']; } else { $xh = $this->getFontHeight($size) / 2; } return $size * $xh / 1000; } /** * return the font descender, this will normally return a negative number * if you add this number to the baseline, you get the level of the bottom of the font * it is in the pdf user units * * @param float $size * * @return float */ public function getFontDescender(float $size): float { // note that this will most likely return a negative value if (!$this->numFonts) { $this->selectFont($this->defaultFont); } //$h = $this->fonts[$this->currentFont]['FontBBox'][1]; $h = $this->fonts[$this->currentFont]['Descender']; return $size * $h / 1000; } /** * filter the text, this is applied to all text just before being inserted into the pdf document * it escapes the various things that need to be escaped, and so on * * @param $text * @param bool $bom * @param bool $convert_encoding * @return string */ function filterText($text, $bom = true, $convert_encoding = true) { if (!$this->numFonts) { $this->selectFont($this->defaultFont); } if ($convert_encoding) { $cf = $this->currentFont; if (isset($this->fonts[$cf]) && $this->fonts[$cf]['isUnicode']) { $text = $this->utf8toUtf16BE($text, $bom); } else { //$text = html_entity_decode($text, ENT_QUOTES); $text = mb_convert_encoding($text, self::$targetEncoding, 'UTF-8'); } } elseif ($bom) { $text = $this->utf8toUtf16BE($text, $bom); } // the chr(13) substitution fixes a bug seen in TCPDF (bug #1421290) return strtr($text, [')' => '\\)', '(' => '\\(', '\\' => '\\\\', chr(13) => '\r']); } /** * return array containing codepoints (UTF-8 character values) for the * string passed in. * * based on the excellent TCPDF code by Nicola Asuni and the * RFC for UTF-8 at http://www.faqs.org/rfcs/rfc3629.html * * @param string $text UTF-8 string to process * @return array UTF-8 codepoints array for the string */ function utf8toCodePointsArray(&$text) { $length = mb_strlen($text, '8bit'); // http://www.php.net/manual/en/function.mb-strlen.php#77040 $unicode = []; // array containing unicode values $bytes = []; // array containing single character byte sequences $numbytes = 1; // number of octets needed to represent the UTF-8 character for ($i = 0; $i < $length; $i++) { $c = ord($text[$i]); // get one string character at time if (count($bytes) === 0) { // get starting octect if ($c <= 0x7F) { $unicode[] = $c; // use the character "as is" because is ASCII $numbytes = 1; } elseif (($c >> 0x05) === 0x06) { // 2 bytes character (0x06 = 110 BIN) $bytes[] = ($c - 0xC0) << 0x06; $numbytes = 2; } elseif (($c >> 0x04) === 0x0E) { // 3 bytes character (0x0E = 1110 BIN) $bytes[] = ($c - 0xE0) << 0x0C; $numbytes = 3; } elseif (($c >> 0x03) === 0x1E) { // 4 bytes character (0x1E = 11110 BIN) $bytes[] = ($c - 0xF0) << 0x12; $numbytes = 4; } else { // use replacement character for other invalid sequences $unicode[] = 0xFFFD; $bytes = []; $numbytes = 1; } } elseif (($c >> 0x06) === 0x02) { // bytes 2, 3 and 4 must start with 0x02 = 10 BIN $bytes[] = $c - 0x80; if (count($bytes) === $numbytes) { // compose UTF-8 bytes to a single unicode value $c = $bytes[0]; for ($j = 1; $j < $numbytes; $j++) { $c += ($bytes[$j] << (($numbytes - $j - 1) * 0x06)); } if ((($c >= 0xD800) and ($c <= 0xDFFF)) or ($c >= 0x10FFFF)) { // The definition of UTF-8 prohibits encoding character numbers between // U+D800 and U+DFFF, which are reserved for use with the UTF-16 // encoding form (as surrogate pairs) and do not directly represent // characters. $unicode[] = 0xFFFD; // use replacement character } else { $unicode[] = $c; // add char to array } // reset data for next char $bytes = []; $numbytes = 1; } } else { // use replacement character for other invalid sequences $unicode[] = 0xFFFD; $bytes = []; $numbytes = 1; } } return $unicode; } /** * convert UTF-8 to UTF-16 with an additional byte order marker * at the front if required. * * based on the excellent TCPDF code by Nicola Asuni and the * RFC for UTF-8 at http://www.faqs.org/rfcs/rfc3629.html * * @param string $text UTF-8 string to process * @param boolean $bom whether to add the byte order marker * @return string UTF-16 result string */ function utf8toUtf16BE(&$text, $bom = true) { $out = $bom ? "\xFE\xFF" : ''; $unicode = $this->utf8toCodePointsArray($text); foreach ($unicode as $c) { if ($c === 0xFFFD) { $out .= "\xFF\xFD"; // replacement character } elseif ($c < 0x10000) { $out .= chr($c >> 0x08) . chr($c & 0xFF); } else { $c -= 0x10000; $w1 = 0xD800 | ($c >> 0x10); $w2 = 0xDC00 | ($c & 0x3FF); $out .= chr($w1 >> 0x08) . chr($w1 & 0xFF) . chr($w2 >> 0x08) . chr($w2 & 0xFF); } } return $out; } /** * given a start position and information about how text is to be laid out, calculate where * on the page the text will end * * @param $x * @param $y * @param $angle * @param $size * @param $wa * @param $text * @return array */ private function getTextPosition($x, $y, $angle, $size, $wa, $text) { // given this information return an array containing x and y for the end position as elements 0 and 1 $w = $this->getTextWidth($size, $text); // need to adjust for the number of spaces in this text $words = explode(' ', $text); $nspaces = count($words) - 1; $w += $wa * $nspaces; $a = deg2rad((float)$angle); return [cos($a) * $w + $x, -sin($a) * $w + $y]; } /** * Callback method used by smallCaps * * @param array $matches * * @return string */ function toUpper($matches) { return mb_strtoupper($matches[0]); } function concatMatches($matches) { $str = ""; foreach ($matches as $match) { $str .= $match[0]; } return $str; } /** * register text for font subsetting * * @param string $font * @param string $text */ function registerText($font, $text) { if (!$this->isUnicode || in_array(mb_strtolower(basename($font)), self::$coreFonts)) { return; } if (!isset($this->stringSubsets[$font])) { $base_subset = "\u{fffd}\u{fffe}\u{ffff}"; $this->stringSubsets[$font] = $this->utf8toCodePointsArray($base_subset); } $this->stringSubsets[$font] = array_unique( array_merge($this->stringSubsets[$font], $this->utf8toCodePointsArray($text)) ); } /** * add text to the document, at a specified location, size and angle on the page * * @param float $x * @param float $y * @param float $size * @param string $text * @param float $angle * @param float $wordSpaceAdjust * @param float $charSpaceAdjust * @param bool $smallCaps */ function addText($x, $y, $size, $text, $angle = 0, $wordSpaceAdjust = 0, $charSpaceAdjust = 0, $smallCaps = false) { if (!$this->numFonts) { $this->selectFont($this->defaultFont); } $text = str_replace(["\r", "\n"], "", $text); // if ($smallCaps) { // preg_match_all("/(\P{Ll}+)/u", $text, $matches, PREG_SET_ORDER); // $lower = $this->concatMatches($matches); // d($lower); // preg_match_all("/(\p{Ll}+)/u", $text, $matches, PREG_SET_ORDER); // $other = $this->concatMatches($matches); // d($other); // $text = preg_replace_callback("/\p{Ll}/u", array($this, "toUpper"), $text); // } // if there are any open callbacks, then they should be called, to show the start of the line if ($this->nCallback > 0) { for ($i = $this->nCallback; $i > 0; $i--) { // call each function $info = [ 'x' => $x, 'y' => $y, 'angle' => $angle, 'status' => 'sol', 'p' => $this->callback[$i]['p'], 'nCallback' => $this->callback[$i]['nCallback'], 'height' => $this->callback[$i]['height'], 'descender' => $this->callback[$i]['descender'] ]; $func = $this->callback[$i]['f']; $this->$func($info); } } if ($angle == 0) { $this->addContent(sprintf("\nBT %.3F %.3F Td", $x, $y)); } else { $a = deg2rad((float)$angle); $this->addContent( sprintf("\nBT %.3F %.3F %.3F %.3F %.3F %.3F Tm", cos($a), -sin($a), sin($a), cos($a), $x, $y) ); } if ($wordSpaceAdjust != 0) { $this->addContent(sprintf(" %.3F Tw", $wordSpaceAdjust)); } if ($charSpaceAdjust != 0) { $this->addContent(sprintf(" %.3F Tc", $charSpaceAdjust)); } $len = mb_strlen($text); $start = 0; if ($start < $len) { $part = $text; // OAR - Don't need this anymore, given that $start always equals zero. substr($text, $start); $place_text = $this->filterText($part, false); // modify unicode text so that extra word spacing is manually implemented (bug #) if ($this->fonts[$this->currentFont]['isUnicode'] && $wordSpaceAdjust != 0) { $space_scale = 1000 / $size; $place_text = str_replace("\x00\x20", "\x00\x20)\x00\x20" . (-round($space_scale * $wordSpaceAdjust)) . "\x00\x20(", $place_text); } $this->addContent(" /F$this->currentFontNum " . sprintf('%.1F Tf ', $size)); $this->addContent(" [($place_text)] TJ"); } if ($wordSpaceAdjust != 0) { $this->addContent(sprintf(" %.3F Tw", 0)); } if ($charSpaceAdjust != 0) { $this->addContent(sprintf(" %.3F Tc", 0)); } $this->addContent(' ET'); // if there are any open callbacks, then they should be called, to show the end of the line if ($this->nCallback > 0) { for ($i = $this->nCallback; $i > 0; $i--) { // call each function $tmp = $this->getTextPosition($x, $y, $angle, $size, $wordSpaceAdjust, $text); $info = [ 'x' => $tmp[0], 'y' => $tmp[1], 'angle' => $angle, 'status' => 'eol', 'p' => $this->callback[$i]['p'], 'nCallback' => $this->callback[$i]['nCallback'], 'height' => $this->callback[$i]['height'], 'descender' => $this->callback[$i]['descender'] ]; $func = $this->callback[$i]['f']; $this->$func($info); } } if ($this->fonts[$this->currentFont]['isSubsetting']) { $this->registerText($this->currentFont, $text); } } /** * calculate how wide a given text string will be on a page, at a given size. * this can be called externally, but is also used by the other class functions * * @param float $size * @param string $text * @param float $wordSpacing * @param float $charSpacing * * @return float */ public function getTextWidth(float $size, string $text, float $wordSpacing = 0.0, float $charSpacing = 0.0): float { static $ord_cache = []; // this function should not change any of the settings, though it will need to // track any directives which change during calculation, so copy them at the start // and put them back at the end. $store_currentTextState = $this->currentTextState; if (!$this->numFonts) { $this->selectFont($this->defaultFont); } $text = str_replace(["\r", "\n"], "", $text); // hmm, this is where it all starts to get tricky - use the font information to // calculate the width of each character, add them up and convert to user units $w = 0; $cf = $this->currentFont; $current_font = $this->fonts[$cf]; $space_scale = 1000 / ($size > 0 ? $size : 1); if ($current_font['isUnicode']) { // for Unicode, use the code points array to calculate width rather // than just the string itself $unicode = $this->utf8toCodePointsArray($text); foreach ($unicode as $char) { // check if we have to replace character if (isset($current_font['differences'][$char])) { $char = $current_font['differences'][$char]; } if (isset($current_font['C'][$char])) { $char_width = $current_font['C'][$char]; // add the character width $w += $char_width; // add additional padding for space if (isset($current_font['codeToName'][$char]) && $current_font['codeToName'][$char] === 'space') { // Space $w += $wordSpacing * $space_scale; } } } // add additional char spacing if ($charSpacing != 0) { $w += $charSpacing * $space_scale * count($unicode); } } else { // If CPDF is in Unicode mode but the current font does not support Unicode we need to convert the character set to Windows-1252 if ($this->isUnicode) { $text = mb_convert_encoding($text, 'Windows-1252', 'UTF-8'); } $len = mb_strlen($text, 'Windows-1252'); for ($i = 0; $i < $len; $i++) { $c = $text[$i]; $char = isset($ord_cache[$c]) ? $ord_cache[$c] : ($ord_cache[$c] = ord($c)); // check if we have to replace character if (isset($current_font['differences'][$char])) { $char = $current_font['differences'][$char]; } if (isset($current_font['C'][$char])) { $char_width = $current_font['C'][$char]; // add the character width $w += $char_width; // add additional padding for space if (isset($current_font['codeToName'][$char]) && $current_font['codeToName'][$char] === 'space') { // Space $w += $wordSpacing * $space_scale; } } } // add additional char spacing if ($charSpacing != 0) { $w += $charSpacing * $space_scale * $len; } } $this->currentTextState = $store_currentTextState; $this->setCurrentFont(); return $w * $size / 1000; } /** * this will be called at a new page to return the state to what it was on the * end of the previous page, before the stack was closed down * This is to get around not being able to have open 'q' across pages * * @param int $pageEnd */ function saveState($pageEnd = 0) { if ($pageEnd) { // this will be called at a new page to return the state to what it was on the // end of the previous page, before the stack was closed down // This is to get around not being able to have open 'q' across pages $opt = $this->stateStack[$pageEnd]; // ok to use this as stack starts numbering at 1 $this->setColor($opt['col'], true); $this->setStrokeColor($opt['str'], true); $this->addContent("\n" . $opt['lin']); // $this->currentLineStyle = $opt['lin']; } else { $this->nStateStack++; $this->stateStack[$this->nStateStack] = [ 'col' => $this->currentColor, 'str' => $this->currentStrokeColor, 'lin' => $this->currentLineStyle ]; } $this->save(); } /** * restore a previously saved state * * @param int $pageEnd */ function restoreState($pageEnd = 0) { if (!$pageEnd) { $n = $this->nStateStack; $this->currentColor = $this->stateStack[$n]['col']; $this->currentStrokeColor = $this->stateStack[$n]['str']; $this->addContent("\n" . $this->stateStack[$n]['lin']); $this->currentLineStyle = $this->stateStack[$n]['lin']; $this->stateStack[$n] = null; unset($this->stateStack[$n]); $this->nStateStack--; } $this->restore(); } /** * make a loose object, the output will go into this object, until it is closed, then will revert to * the current one. * this object will not appear until it is included within a page. * the function will return the object number * * @return int */ function openObject() { $this->nStack++; $this->stack[$this->nStack] = ['c' => $this->currentContents, 'p' => $this->currentPage]; // add a new object of the content type, to hold the data flow $this->numObj++; $this->o_contents($this->numObj, 'new'); $this->currentContents = $this->numObj; $this->looseObjects[$this->numObj] = 1; return $this->numObj; } /** * open an existing object for editing * * @param $id */ function reopenObject($id) { $this->nStack++; $this->stack[$this->nStack] = ['c' => $this->currentContents, 'p' => $this->currentPage]; $this->currentContents = $id; // also if this object is the primary contents for a page, then set the current page to its parent if (isset($this->objects[$id]['onPage'])) { $this->currentPage = $this->objects[$id]['onPage']; } } /** * close an object */ function closeObject() { // close the object, as long as there was one open in the first place, which will be indicated by // an objectId on the stack. if ($this->nStack > 0) { $this->currentContents = $this->stack[$this->nStack]['c']; $this->currentPage = $this->stack[$this->nStack]['p']; $this->nStack--; // easier to probably not worry about removing the old entries, they will be overwritten // if there are new ones. } } /** * stop an object from appearing on pages from this point on * * @param $id */ function stopObject($id) { // if an object has been appearing on pages up to now, then stop it, this page will // be the last one that could contain it. if (isset($this->addLooseObjects[$id])) { $this->addLooseObjects[$id] = ''; } } /** * after an object has been created, it wil only show if it has been added, using this function. * * @param $id * @param string $options */ function addObject($id, $options = 'add') { // add the specified object to the page if (isset($this->looseObjects[$id]) && $this->currentContents != $id) { // then it is a valid object, and it is not being added to itself switch ($options) { case 'all': // then this object is to be added to this page (done in the next block) and // all future new pages. $this->addLooseObjects[$id] = 'all'; case 'add': if (isset($this->objects[$this->currentContents]['onPage'])) { // then the destination contents is the primary for the page // (though this object is actually added to that page) $this->o_page($this->objects[$this->currentContents]['onPage'], 'content', $id); } break; case 'even': $this->addLooseObjects[$id] = 'even'; $pageObjectId = $this->objects[$this->currentContents]['onPage']; if ($this->objects[$pageObjectId]['info']['pageNum'] % 2 == 0) { $this->addObject($id); // hacky huh :) } break; case 'odd': $this->addLooseObjects[$id] = 'odd'; $pageObjectId = $this->objects[$this->currentContents]['onPage']; if ($this->objects[$pageObjectId]['info']['pageNum'] % 2 == 1) { $this->addObject($id); // hacky huh :) } break; case 'next': $this->addLooseObjects[$id] = 'all'; break; case 'nexteven': $this->addLooseObjects[$id] = 'even'; break; case 'nextodd': $this->addLooseObjects[$id] = 'odd'; break; } } } /** * return a storable representation of a specific object * * @param $id * @return string|null */ function serializeObject($id) { if (array_key_exists($id, $this->objects)) { return serialize($this->objects[$id]); } return null; } /** * restore an object from its stored representation. Returns its new object id. * * @param $obj * @return int */ function restoreSerializedObject($obj) { $obj_id = $this->openObject(); $this->objects[$obj_id] = unserialize($obj); $this->closeObject(); return $obj_id; } /** * Embeds a file inside the PDF * * @param string $filepath path to the file to store inside the PDF * @param string $embeddedFilename the filename displayed in the list of embedded files * @param string $description a description in the list of embedded files */ public function addEmbeddedFile(string $filepath, string $embeddedFilename, string $description): void { $this->numObj++; $this->o_embedded_file_dictionary( $this->numObj, 'new', [ 'filepath' => $filepath, 'filename' => $embeddedFilename, 'description' => $description ] ); } /** * Add content to the documents info object * * @param string|array $label * @param string $value */ public function addInfo($label, string $value = ""): void { // this will only work if the label is one of the valid ones. // modify this so that arrays can be passed as well. // if $label is an array then assume that it is key => value pairs // else assume that they are both scalar, anything else will probably error if (is_array($label)) { foreach ($label as $l => $v) { $this->o_info($this->infoObject, $l, (string) $v); } } else { $this->o_info($this->infoObject, $label, $value); } } /** * set the viewer preferences of the document, it is up to the browser to obey these. * * @param $label * @param int $value */ function setPreferences($label, $value = 0) { // this will only work if the label is one of the valid ones. if (is_array($label)) { foreach ($label as $l => $v) { $this->o_catalog($this->catalogId, 'viewerPreferences', [$l => $v]); } } else { $this->o_catalog($this->catalogId, 'viewerPreferences', [$label => $value]); } } /** * extract an integer from a position in a byte stream * * @param $data * @param $pos * @param $num * @return int */ private function getBytes(&$data, $pos, $num) { // return the integer represented by $num bytes from $pos within $data $ret = 0; for ($i = 0; $i < $num; $i++) { $ret *= 256; $ret += ord($data[$pos + $i]); } return $ret; } /** * Check if image already added to pdf image directory. * If yes, need not to create again (pass empty data) * * @param string $imgname * @return bool */ function image_iscached($imgname) { return isset($this->imagelist[$imgname]); } /** * add a PNG image into the document, from a GD object * this should work with remote files * * @param \GdImage|resource $img A GD resource * @param string $file The PNG file * @param float $x X position * @param float $y Y position * @param float $w Width * @param float $h Height * @param bool $is_mask true if the image is a mask * @param bool $mask true if the image is masked * @throws Exception */ function addImagePng(&$img, $file, $x, $y, $w = 0.0, $h = 0.0, $is_mask = false, $mask = null) { if (!function_exists("imagepng")) { throw new \Exception("The PHP GD extension is required, but is not installed."); } //if already cached, need not to read again if (isset($this->imagelist[$file])) { $data = null; } else { // Example for transparency handling on new image. Retain for current image // $tIndex = imagecolortransparent($img); // if ($tIndex > 0) { // $tColor = imagecolorsforindex($img, $tIndex); // $new_tIndex = imagecolorallocate($new_img, $tColor['red'], $tColor['green'], $tColor['blue']); // imagefill($new_img, 0, 0, $new_tIndex); // imagecolortransparent($new_img, $new_tIndex); // } // blending mode (literal/blending) on drawing into current image. not relevant when not saved or not drawn //imagealphablending($img, true); //default, but explicitely set to ensure pdf compatibility imagesavealpha($img, false/*!$is_mask && !$mask*/); $error = 0; //DEBUG_IMG_TEMP //debugpng if (defined("DEBUGPNG") && DEBUGPNG) { print '[addImagePng ' . $file . ']'; } ob_start(); @imagepng($img); $data = ob_get_clean(); if ($data == '') { $error = 1; $errormsg = 'trouble writing file from GD'; //DEBUG_IMG_TEMP //debugpng if (defined("DEBUGPNG") && DEBUGPNG) { print 'trouble writing file from GD'; } } if ($error) { $this->addMessage('PNG error - (' . $file . ') ' . $errormsg); return; } } //End isset($this->imagelist[$file]) (png Duplicate removal) $this->addPngFromBuf($data, $file, $x, $y, $w, $h, $is_mask, $mask); } /** * @param $file * @param $x * @param $y * @param $w * @param $h * @param $byte */ protected function addImagePngAlpha($file, $x, $y, $w, $h, $byte) { // generate images $img = @imagecreatefrompng($file); if ($img === false) { return; } // FIXME The pixel transformation doesn't work well with 8bit PNGs $eight_bit = ($byte & 4) !== 4; $wpx = imagesx($img); $hpx = imagesy($img); imagesavealpha($img, false); // create temp alpha file $tempfile_alpha = @tempnam($this->tmp, "cpdf_img_"); @unlink($tempfile_alpha); $tempfile_alpha = "$tempfile_alpha.png"; // create temp plain file $tempfile_plain = @tempnam($this->tmp, "cpdf_img_"); @unlink($tempfile_plain); $tempfile_plain = "$tempfile_plain.png"; $imgalpha = imagecreate($wpx, $hpx); imagesavealpha($imgalpha, false); // generate gray scale palette (0 -> 255) for ($c = 0; $c < 256; ++$c) { imagecolorallocate($imgalpha, $c, $c, $c); } // Use PECL gmagick + Graphics Magic to process transparent PNG images if (extension_loaded("gmagick")) { $gmagick = new \Gmagick($file); $gmagick->setimageformat('png'); // Get opacity channel (negative of alpha channel) $alpha_channel_neg = clone $gmagick; $alpha_channel_neg->separateimagechannel(\Gmagick::CHANNEL_OPACITY); // Negate opacity channel $alpha_channel = new \Gmagick(); $alpha_channel->newimage($wpx, $hpx, "#FFFFFF", "png"); $alpha_channel->compositeimage($alpha_channel_neg, \Gmagick::COMPOSITE_DIFFERENCE, 0, 0); $alpha_channel->separateimagechannel(\Gmagick::CHANNEL_RED); $alpha_channel->writeimage($tempfile_alpha); // Cast to 8bit+palette $imgalpha_ = @imagecreatefrompng($tempfile_alpha); imagecopy($imgalpha, $imgalpha_, 0, 0, 0, 0, $wpx, $hpx); imagedestroy($imgalpha_); imagepng($imgalpha, $tempfile_alpha); // Make opaque image $color_channels = new \Gmagick(); $color_channels->newimage($wpx, $hpx, "#FFFFFF", "png"); $color_channels->compositeimage($gmagick, \Gmagick::COMPOSITE_COPYRED, 0, 0); $color_channels->compositeimage($gmagick, \Gmagick::COMPOSITE_COPYGREEN, 0, 0); $color_channels->compositeimage($gmagick, \Gmagick::COMPOSITE_COPYBLUE, 0, 0); $color_channels->writeimage($tempfile_plain); $imgplain = @imagecreatefrompng($tempfile_plain); } // Use PECL imagick + ImageMagic to process transparent PNG images elseif (extension_loaded("imagick")) { // Native cloning was added to pecl-imagick in svn commit 263814 // the first version containing it was 3.0.1RC1 static $imagickClonable = null; if ($imagickClonable === null) { $imagickClonable = true; if (defined('Imagick::IMAGICK_EXTVER')) { $imagickVersion = \Imagick::IMAGICK_EXTVER; } else { $imagickVersion = '0'; } if (version_compare($imagickVersion, '0.0.1', '>=')) { $imagickClonable = version_compare($imagickVersion, '3.0.1rc1', '>='); } } $imagick = new \Imagick($file); $imagick->setFormat('png'); // Get opacity channel (negative of alpha channel) if ($imagick->getImageAlphaChannel()) { $alpha_channel = $imagickClonable ? clone $imagick : $imagick->clone(); $alpha_channel->separateImageChannel(\Imagick::CHANNEL_ALPHA); // Since ImageMagick7 negate invert transparency as default if (\Imagick::getVersion()['versionNumber'] < 1800) { $alpha_channel->negateImage(true); } $alpha_channel->writeImage($tempfile_alpha); // Cast to 8bit+palette $imgalpha_ = @imagecreatefrompng($tempfile_alpha); imagecopy($imgalpha, $imgalpha_, 0, 0, 0, 0, $wpx, $hpx); imagedestroy($imgalpha_); imagepng($imgalpha, $tempfile_alpha); } else { $tempfile_alpha = null; } // Make opaque image $color_channels = new \Imagick(); $color_channels->newImage($wpx, $hpx, "#FFFFFF", "png"); $color_channels->compositeImage($imagick, \Imagick::COMPOSITE_COPYRED, 0, 0); $color_channels->compositeImage($imagick, \Imagick::COMPOSITE_COPYGREEN, 0, 0); $color_channels->compositeImage($imagick, \Imagick::COMPOSITE_COPYBLUE, 0, 0); $color_channels->writeImage($tempfile_plain); $imgplain = @imagecreatefrompng($tempfile_plain); } else { // allocated colors cache $allocated_colors = []; // extract alpha channel for ($xpx = 0; $xpx < $wpx; ++$xpx) { for ($ypx = 0; $ypx < $hpx; ++$ypx) { $color = imagecolorat($img, $xpx, $ypx); $col = imagecolorsforindex($img, $color); $alpha = $col['alpha']; if ($eight_bit) { // with gamma correction $gammacorr = 2.2; $pixel = round(pow((((127 - $alpha) * 255 / 127) / 255), $gammacorr) * 255); } else { // without gamma correction $pixel = (127 - $alpha) * 2; $key = $col['red'] . $col['green'] . $col['blue']; if (!isset($allocated_colors[$key])) { $pixel_img = imagecolorallocate($img, $col['red'], $col['green'], $col['blue']); $allocated_colors[$key] = $pixel_img; } else { $pixel_img = $allocated_colors[$key]; } imagesetpixel($img, $xpx, $ypx, $pixel_img); } imagesetpixel($imgalpha, $xpx, $ypx, $pixel); } } // extract image without alpha channel $imgplain = imagecreatetruecolor($wpx, $hpx); imagecopy($imgplain, $img, 0, 0, 0, 0, $wpx, $hpx); imagedestroy($img); imagepng($imgalpha, $tempfile_alpha); imagepng($imgplain, $tempfile_plain); } $this->imageAlphaList[$file] = [$tempfile_alpha, $tempfile_plain]; // embed mask image if ($tempfile_alpha) { $this->addImagePng($imgalpha, $tempfile_alpha, $x, $y, $w, $h, true); imagedestroy($imgalpha); $this->imageCache[] = $tempfile_alpha; } // embed image, masked with previously embedded mask $this->addImagePng($imgplain, $tempfile_plain, $x, $y, $w, $h, false, ($tempfile_alpha !== null)); imagedestroy($imgplain); $this->imageCache[] = $tempfile_plain; } /** * add a PNG image into the document, from a file * this should work with remote files * * @param $file * @param $x * @param $y * @param int $w * @param int $h * @throws Exception */ function addPngFromFile($file, $x, $y, $w = 0, $h = 0) { if (!function_exists("imagecreatefrompng")) { throw new \Exception("The PHP GD extension is required, but is not installed."); } if (isset($this->imageAlphaList[$file])) { [$alphaFile, $plainFile] = $this->imageAlphaList[$file]; if ($alphaFile) { $img = null; $this->addImagePng($img, $alphaFile, $x, $y, $w, $h, true); } $img = null; $this->addImagePng($img, $plainFile, $x, $y, $w, $h, false, ($plainFile !== null)); return; } //if already cached, need not to read again if (isset($this->imagelist[$file])) { $img = null; } else { $info = file_get_contents($file, false, null, 24, 5); $meta = unpack("CbitDepth/CcolorType/CcompressionMethod/CfilterMethod/CinterlaceMethod", $info); $bit_depth = $meta["bitDepth"]; $color_type = $meta["colorType"]; // http://www.w3.org/TR/PNG/#11IHDR // 3 => indexed // 4 => greyscale with alpha // 6 => fullcolor with alpha $is_alpha = in_array($color_type, [4, 6]) || ($color_type == 3 && $bit_depth != 4); if ($is_alpha) { // exclude grayscale alpha $this->addImagePngAlpha($file, $x, $y, $w, $h, $color_type); return; } //png files typically contain an alpha channel. //pdf file format or class.pdf does not support alpha blending. //on alpha blended images, more transparent areas have a color near black. //This appears in the result on not storing the alpha channel. //Correct would be the box background image or its parent when transparent. //But this would make the image dependent on the background. //Therefore create an image with white background and copy in //A more natural background than black is white. //Therefore create an empty image with white background and merge the //image in with alpha blending. $imgtmp = @imagecreatefrompng($file); if (!$imgtmp) { return; } $sx = imagesx($imgtmp); $sy = imagesy($imgtmp); $img = imagecreatetruecolor($sx, $sy); imagealphablending($img, true); // @todo is it still needed ?? $ti = imagecolortransparent($imgtmp); if ($ti >= 0) { $tc = imagecolorsforindex($imgtmp, $ti); $ti = imagecolorallocate($img, $tc['red'], $tc['green'], $tc['blue']); imagefill($img, 0, 0, $ti); imagecolortransparent($img, $ti); } else { imagefill($img, 1, 1, imagecolorallocate($img, 255, 255, 255)); } imagecopy($img, $imgtmp, 0, 0, 0, 0, $sx, $sy); imagedestroy($imgtmp); } $this->addImagePng($img, $file, $x, $y, $w, $h); if ($img) { imagedestroy($img); } } /** * add a PNG image into the document, from a file * this should work with remote files * * @param $file * @param $x * @param $y * @param int $w * @param int $h */ function addSvgFromFile($file, $x, $y, $w = 0, $h = 0) { $doc = new \Svg\Document(); $doc->loadFile($file); $dimensions = $doc->getDimensions(); $this->save(); $this->transform([$w / $dimensions["width"], 0, 0, $h / $dimensions["height"], $x, $y]); $surface = new \Svg\Surface\SurfaceCpdf($doc, $this); $doc->render($surface); $this->restore(); } /** * add a PNG image into the document, from a memory buffer of the file * * @param $data * @param $file * @param $x * @param $y * @param float $w * @param float $h * @param bool $is_mask * @param null $mask */ function addPngFromBuf(&$data, $file, $x, $y, $w = 0.0, $h = 0.0, $is_mask = false, $mask = null) { if (isset($this->imagelist[$file])) { $data = null; $info['width'] = $this->imagelist[$file]['w']; $info['height'] = $this->imagelist[$file]['h']; $label = $this->imagelist[$file]['label']; } else { if ($data == null) { $this->addMessage('addPngFromBuf error - data not present!'); return; } $error = 0; if (!$error) { $header = chr(137) . chr(80) . chr(78) . chr(71) . chr(13) . chr(10) . chr(26) . chr(10); if (mb_substr($data, 0, 8, '8bit') != $header) { $error = 1; if (defined("DEBUGPNG") && DEBUGPNG) { print '[addPngFromFile this file does not have a valid header ' . $file . ']'; } $errormsg = 'this file does not have a valid header'; } } if (!$error) { // set pointer $p = 8; $len = mb_strlen($data, '8bit'); // cycle through the file, identifying chunks $haveHeader = 0; $info = []; $idata = ''; $pdata = ''; while ($p < $len) { $chunkLen = $this->getBytes($data, $p, 4); $chunkType = mb_substr($data, $p + 4, 4, '8bit'); switch ($chunkType) { case 'IHDR': // this is where all the file information comes from $info['width'] = $this->getBytes($data, $p + 8, 4); $info['height'] = $this->getBytes($data, $p + 12, 4); $info['bitDepth'] = ord($data[$p + 16]); $info['colorType'] = ord($data[$p + 17]); $info['compressionMethod'] = ord($data[$p + 18]); $info['filterMethod'] = ord($data[$p + 19]); $info['interlaceMethod'] = ord($data[$p + 20]); //print_r($info); $haveHeader = 1; if ($info['compressionMethod'] != 0) { $error = 1; //debugpng if (defined("DEBUGPNG") && DEBUGPNG) { print '[addPngFromFile unsupported compression method ' . $file . ']'; } $errormsg = 'unsupported compression method'; } if ($info['filterMethod'] != 0) { $error = 1; //debugpng if (defined("DEBUGPNG") && DEBUGPNG) { print '[addPngFromFile unsupported filter method ' . $file . ']'; } $errormsg = 'unsupported filter method'; } break; case 'PLTE': $pdata .= mb_substr($data, $p + 8, $chunkLen, '8bit'); break; case 'IDAT': $idata .= mb_substr($data, $p + 8, $chunkLen, '8bit'); break; case 'tRNS': //this chunk can only occur once and it must occur after the PLTE chunk and before IDAT chunk //print "tRNS found, color type = ".$info['colorType']."\n"; $transparency = []; switch ($info['colorType']) { // indexed color, rbg case 3: /* corresponding to entries in the plte chunk Alpha for palette index 0: 1 byte Alpha for palette index 1: 1 byte ...etc... */ // there will be one entry for each palette entry. up until the last non-opaque entry. // set up an array, stretching over all palette entries which will be o (opaque) or 1 (transparent) $transparency['type'] = 'indexed'; $trans = 0; for ($i = $chunkLen; $i >= 0; $i--) { if (ord($data[$p + 8 + $i]) == 0) { $trans = $i; } } $transparency['data'] = $trans; break; // grayscale case 0: /* corresponding to entries in the plte chunk Gray: 2 bytes, range 0 .. (2^bitdepth)-1 */ // $transparency['grayscale'] = $this->PRVT_getBytes($data,$p+8,2); // g = grayscale $transparency['type'] = 'indexed'; $transparency['data'] = ord($data[$p + 8 + 1]); break; // truecolor case 2: /* corresponding to entries in the plte chunk Red: 2 bytes, range 0 .. (2^bitdepth)-1 Green: 2 bytes, range 0 .. (2^bitdepth)-1 Blue: 2 bytes, range 0 .. (2^bitdepth)-1 */ $transparency['r'] = $this->getBytes($data, $p + 8, 2); // r from truecolor $transparency['g'] = $this->getBytes($data, $p + 10, 2); // g from truecolor $transparency['b'] = $this->getBytes($data, $p + 12, 2); // b from truecolor $transparency['type'] = 'color-key'; break; //unsupported transparency type default: if (defined("DEBUGPNG") && DEBUGPNG) { print '[addPngFromFile unsupported transparency type ' . $file . ']'; } break; } // KS End new code break; default: break; } $p += $chunkLen + 12; } if (!$haveHeader) { $error = 1; //debugpng if (defined("DEBUGPNG") && DEBUGPNG) { print '[addPngFromFile information header is missing ' . $file . ']'; } $errormsg = 'information header is missing'; } if (isset($info['interlaceMethod']) && $info['interlaceMethod']) { $error = 1; //debugpng if (defined("DEBUGPNG") && DEBUGPNG) { print '[addPngFromFile no support for interlaced images in pdf ' . $file . ']'; } $errormsg = 'There appears to be no support for interlaced images in pdf.'; } } if (!$error && $info['bitDepth'] > 8) { $error = 1; //debugpng if (defined("DEBUGPNG") && DEBUGPNG) { print '[addPngFromFile bit depth of 8 or less is supported ' . $file . ']'; } $errormsg = 'only bit depth of 8 or less is supported'; } if (!$error) { switch ($info['colorType']) { case 3: $color = 'DeviceRGB'; $ncolor = 1; break; case 2: $color = 'DeviceRGB'; $ncolor = 3; break; case 0: $color = 'DeviceGray'; $ncolor = 1; break; default: $error = 1; //debugpng if (defined("DEBUGPNG") && DEBUGPNG) { print '[addPngFromFile alpha channel not supported: ' . $info['colorType'] . ' ' . $file . ']'; } $errormsg = 'transparency alpha channel not supported, transparency only supported for palette images.'; } } if ($error) { $this->addMessage('PNG error - (' . $file . ') ' . $errormsg); return; } //print_r($info); // so this image is ok... add it in. $this->numImages++; $im = $this->numImages; $label = "I$im"; $this->numObj++; // $this->o_image($this->numObj,'new',array('label' => $label,'data' => $idata,'iw' => $w,'ih' => $h,'type' => 'png','ic' => $info['width'])); $options = [ 'label' => $label, 'data' => $idata, 'bitsPerComponent' => $info['bitDepth'], 'pdata' => $pdata, 'iw' => $info['width'], 'ih' => $info['height'], 'type' => 'png', 'color' => $color, 'ncolor' => $ncolor, 'masked' => $mask, 'isMask' => $is_mask ]; if (isset($transparency)) { $options['transparency'] = $transparency; } $this->o_image($this->numObj, 'new', $options); $this->imagelist[$file] = ['label' => $label, 'w' => $info['width'], 'h' => $info['height']]; } if ($is_mask) { return; } if ($w <= 0 && $h <= 0) { $w = $info['width']; $h = $info['height']; } if ($w <= 0) { $w = $h / $info['height'] * $info['width']; } if ($h <= 0) { $h = $w * $info['height'] / $info['width']; } $this->addContent(sprintf("\nq\n%.3F 0 0 %.3F %.3F %.3F cm /%s Do\nQ", $w, $h, $x, $y, $label)); } /** * add a JPEG image into the document, from a file * * @param $img * @param $x * @param $y * @param int $w * @param int $h */ function addJpegFromFile($img, $x, $y, $w = 0, $h = 0) { // attempt to add a jpeg image straight from a file, using no GD commands // note that this function is unable to operate on a remote file. if (!file_exists($img)) { return; } if ($this->image_iscached($img)) { $data = null; $imageWidth = $this->imagelist[$img]['w']; $imageHeight = $this->imagelist[$img]['h']; $channels = $this->imagelist[$img]['c']; } else { $tmp = getimagesize($img); $imageWidth = $tmp[0]; $imageHeight = $tmp[1]; if (isset($tmp['channels'])) { $channels = $tmp['channels']; } else { $channels = 3; } $data = file_get_contents($img); } if ($w <= 0 && $h <= 0) { $w = $imageWidth; } if ($w == 0) { $w = $h / $imageHeight * $imageWidth; } if ($h == 0) { $h = $w * $imageHeight / $imageWidth; } $this->addJpegImage_common($data, $img, $imageWidth, $imageHeight, $x, $y, $w, $h, $channels); } /** * common code used by the two JPEG adding functions * @param $data * @param $imgname * @param $imageWidth * @param $imageHeight * @param $x * @param $y * @param int $w * @param int $h * @param int $channels */ private function addJpegImage_common( &$data, $imgname, $imageWidth, $imageHeight, $x, $y, $w = 0, $h = 0, $channels = 3 ) { if ($this->image_iscached($imgname)) { $label = $this->imagelist[$imgname]['label']; //debugpng //if (DEBUGPNG) print '[addJpegImage_common Duplicate '.$imgname.']'; } else { if ($data == null) { $this->addMessage('addJpegImage_common error - (' . $imgname . ') data not present!'); return; } // note that this function is not to be called externally // it is just the common code between the GD and the file options $this->numImages++; $im = $this->numImages; $label = "I$im"; $this->numObj++; $this->o_image( $this->numObj, 'new', [ 'label' => $label, 'data' => &$data, 'iw' => $imageWidth, 'ih' => $imageHeight, 'channels' => $channels ] ); $this->imagelist[$imgname] = [ 'label' => $label, 'w' => $imageWidth, 'h' => $imageHeight, 'c' => $channels ]; } $this->addContent(sprintf("\nq\n%.3F 0 0 %.3F %.3F %.3F cm /%s Do\nQ ", $w, $h, $x, $y, $label)); } /** * specify where the document should open when it first starts * * @param $style * @param int $a * @param int $b * @param int $c */ function openHere($style, $a = 0, $b = 0, $c = 0) { // this function will open the document at a specified page, in a specified style // the values for style, and the required parameters are: // 'XYZ' left, top, zoom // 'Fit' // 'FitH' top // 'FitV' left // 'FitR' left,bottom,right // 'FitB' // 'FitBH' top // 'FitBV' left $this->numObj++; $this->o_destination( $this->numObj, 'new', ['page' => $this->currentPage, 'type' => $style, 'p1' => $a, 'p2' => $b, 'p3' => $c] ); $id = $this->catalogId; $this->o_catalog($id, 'openHere', $this->numObj); } /** * Add JavaScript code to the PDF document * * @param string $code */ function addJavascript($code) { $this->javascript .= $code; } /** * create a labelled destination within the document * * @param $label * @param $style * @param int $a * @param int $b * @param int $c */ function addDestination($label, $style, $a = 0, $b = 0, $c = 0) { // associates the given label with the destination, it is done this way so that a destination can be specified after // it has been linked to // styles are the same as the 'openHere' function $this->numObj++; $this->o_destination( $this->numObj, 'new', ['page' => $this->currentPage, 'type' => $style, 'p1' => $a, 'p2' => $b, 'p3' => $c] ); $id = $this->numObj; // store the label->idf relationship, note that this means that labels can be used only once $this->destinations["$label"] = $id; } /** * define font families, this is used to initialize the font families for the default fonts * and for the user to add new ones for their fonts. The default bahavious can be overridden should * that be desired. * * @param $family * @param string $options */ function setFontFamily($family, $options = '') { if (!is_array($options)) { if ($family === 'init') { // set the known family groups // these font families will be used to enable bold and italic markers to be included // within text streams. html forms will be used... <b></b> <i></i> $this->fontFamilies['Helvetica.afm'] = [ 'b' => 'Helvetica-Bold.afm', 'i' => 'Helvetica-Oblique.afm', 'bi' => 'Helvetica-BoldOblique.afm', 'ib' => 'Helvetica-BoldOblique.afm' ]; $this->fontFamilies['Courier.afm'] = [ 'b' => 'Courier-Bold.afm', 'i' => 'Courier-Oblique.afm', 'bi' => 'Courier-BoldOblique.afm', 'ib' => 'Courier-BoldOblique.afm' ]; $this->fontFamilies['Times-Roman.afm'] = [ 'b' => 'Times-Bold.afm', 'i' => 'Times-Italic.afm', 'bi' => 'Times-BoldItalic.afm', 'ib' => 'Times-BoldItalic.afm' ]; } } else { // the user is trying to set a font family // note that this can also be used to set the base ones to something else if (mb_strlen($family)) { $this->fontFamilies[$family] = $options; } } } /** * used to add messages for use in debugging * * @param $message */ function addMessage($message) { $this->messages .= $message . "\n"; } /** * a few functions which should allow the document to be treated transactionally. * * @param $action */ function transaction($action) { switch ($action) { case 'start': // store all the data away into the checkpoint variable $data = get_object_vars($this); $this->checkpoint = $data; unset($data); break; case 'commit': if (is_array($this->checkpoint) && isset($this->checkpoint['checkpoint'])) { $tmp = $this->checkpoint['checkpoint']; $this->checkpoint = $tmp; unset($tmp); } else { $this->checkpoint = ''; } break; case 'rewind': // do not destroy the current checkpoint, but move us back to the state then, so that we can try again if (is_array($this->checkpoint)) { // can only abort if were inside a checkpoint $tmp = $this->checkpoint; foreach ($tmp as $k => $v) { if ($k !== 'checkpoint') { $this->$k = $v; } } unset($tmp); } break; case 'abort': if (is_array($this->checkpoint)) { // can only abort if were inside a checkpoint $tmp = $this->checkpoint; foreach ($tmp as $k => $v) { $this->$k = $v; } unset($tmp); } break; } } }
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