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<?php
/**
* A PHP class to provide the basic functionality to create a pdf document without
* any requirement for additional modules.
*
* Extended by Orion Richardson to support Unicode / UTF-8 characters using
* TCPDF and others as a guide.
*
* @author Wayne Munro <pdf@ros.co.nz>
* @author Orion Richardson <orionr@yahoo.com>
* @author Helmut Tischer <htischer@weihenstephan.org>
* @author Ryan H. Masten <ryan.masten@gmail.com>
* @author Brian Sweeney <eclecticgeek@gmail.com>
* @author Fabien Ménager <fabien.menager@gmail.com>
* @license Public Domain http://creativecommons.org/licenses/publicdomain/
* @package Cpdf
*/
use FontLib\Font;
use FontLib\BinaryStream;
class Cpdf
{
/**
* @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 = array();
/**
* @var integer The objectId (number within the objects array) of the document catalog
*/
public $catalogId;
/**
* @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 = array();
/**
* @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 = array();
/**
* @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 = array("mode" => "Normal", "opacity" => 1.0);
/**
* array Current fill transparency (partial graphics state)
*/
public $currentFillTransparency = array("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 = array();
/**
* @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 = array();
/**
* @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();
/**
* array contains information about how the loose objects are to be added to the document
*/
public $addLooseObjects = array();
/**
* @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 = array('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 = array();
/**
* @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 = array();
/**
* @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 = array();
/**
* @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 = array();
/**
* @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 = array("width" => 0, "height" => 0);
/**
* @var array All the chars that will be required in the font subsets
*/
protected $stringSubsets = array();
/**
* @var string The target internal encoding
*/
static protected $targetEncoding = 'iso-8859-1';
/**
* @var array The list of the core fonts
*/
static protected $coreFonts = array(
'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 = array(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');
// $this->fileIdentifier = md5('xxxxxxxx'.time());
}
/**
* Document object methods (internal use only)
*
* There is about one object method for each type of object in the pdf document
* Each function has the same call list ($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] = array('t' => 'destination', 'info' => array());
$tmp = '';
switch ($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] = array('t' => 'viewerPreferences', 'info' => array());
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, array('UseNone', 'UseOutlines', 'UseThumbs', 'UseOC'))) {
continue;
}
$o['info'][$k] = $v;
break;
case 'Direction':
if (!in_array($v, array('L2R', 'R2L'))) {
continue;
}
$o['info'][$k] = $v;
break;
case 'PrintScaling':
if (!in_array($v, array('None', 'AppDefault'))) {
continue;
}
$o['info'][$k] = $v;
break;
case 'Duplex':
if (!in_array($v, array('None', 'AppDefault'))) {
continue;
}
$o['info'][$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>>\n";
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] = array('t' => 'catalog', 'info' => array());
$this->catalogId = $id;
break;
case 'outlines':
case 'pages':
case 'openHere':
case 'javascript':
$o['info'][$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 'javascript':
$res .= "\n/Names <</JavaScript $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] = array('t' => 'pages', 'info' => array());
$this->o_catalog($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 = array('width' => $options[2], 'height' => $options[3]);
break;
case 'font':
$o['info']['fonts'][] = array('objNum' => $options['objNum'], 'fontNum' => $options['fontNum']);
break;
case 'extGState':
$o['info']['extGStates'][] = array('objNum' => $options['objNum'], 'stateNum' => $options['stateNum']);
break;
case 'xObject':
$o['info']['xObjects'][] = array('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] = array('t' => 'outlines', 'info' => array('outlines' => array()));
$this->o_catalog($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 $options
* @return string|null
*/
protected function o_font($id, $action, $options = '')
{
if ($action !== 'new') {
$o = &$this->objects[$id];
}
switch ($action) {
case 'new':
$this->objects[$id] = array(
't' => 'font',
'info' => array(
'name' => $options['name'],
'fontFileName' => $options['fontFileName'],
'SubType' => 'Type1'
)
);
$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;
$this->o_contents($toUnicodeId, 'new', 'raw');
$this->objects[$id]['info']['toUnicode'] = $toUnicodeId;
$stream = <<<EOT
/CIDInit /ProcSet findresource begin
12 dict begin
begincmap
/CIDSystemInfo
<</Registry (Adobe)
/Ordering (UCS)
/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;
$res = "<</Length " . mb_strlen($stream, '8bit') . " >>\n";
$res .= "stream\n" . $stream . "\nendstream";
$this->objects[$toUnicodeId]['c'] = $res;
$cidFontId = ++$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', array('fontNum' => $fontNum, 'objNum' => $id));
break;
case 'add':
foreach ($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', $options);
}
break;
case 'out':
if ($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;
}
/**
* 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] = array('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] = array('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] = array('t' => 'fontDescendentCID', 'info' => $options);
// we need a CID system info section
$cidSystemInfoId = ++$this->numObj;
$this->o_contents($cidSystemInfoId, 'new', 'raw');
$this->objects[$id]['info']['cidSystemInfo'] = $cidSystemInfoId;
$res = "<</Registry (Adobe)\n"; // A string identifying an issuer of character collections
$res .= "/Ordering (UCS)\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 .= ">>";
$this->objects[$cidSystemInfoId]['c'] = $res;
// 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;
}
/**
* 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] = array('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";
}
$res .= "\n/Length " . mb_strlen($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] = array('t' => 'procset', 'info' => array('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, $options = '')
{
if ($action !== 'new') {
$o = &$this->objects[$id];
}
switch ($action) {
case 'new':
$this->infoObject = $id;
$date = 'D:' . @date('Ymd');
$this->objects[$id] = array(
't' => 'info',
'info' => array(
'Producer' => 'CPDF (dompdf)',
'CreationDate' => $date
)
);
break;
case 'Title':
case 'Author':
case 'Subject':
case 'Keywords':
case 'Creator':
case 'Producer':
case 'CreationDate':
case 'ModDate':
case 'Trapped':
$o['info'][$action] = $options;
break;
case 'out':
if ($this->encrypted) {
$this->encryptInit($id);
}
$res = "\n$id 0 obj\n<<\n";
foreach ($o['info'] as $k => $v) {
$res .= "/$k (";
if ($this->encrypted) {
$v = $this->ARC4($v);
} // dates must be outputted as-is, without Unicode transformations
elseif (!in_array($k, array('CreationDate', 'ModDate'))) {
$v = $this->filterText($v);
}
$res .= $v;
$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] = array('t' => 'action', 'info' => $options, 'type' => $options['type']);
} else {
// then assume a URI action
$this->objects[$id] = array('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']), true, false);
} else {
$res .= $this->filterText($o['info'], true, 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] = array('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] = array('t' => 'annotation', 'info' => $options);
$this->numObj++;
$this->o_action($this->numObj, 'new', array('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] = array(
't' => 'page',
'info' => array(
'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'] = array();
$this->objects[$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'] = array();
}
// $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] = array('t' => 'contents', 'c' => '', 'info' => array());
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] = array(
't' => 'embedjs',
'info' => array(
'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] = array(
't' => 'javascript',
'info' => array(
'S' => '/JavaScript',
'JS' => '(' . $this->filterText($code) . ')',
)
);
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] = array('t' => 'image', 'data' => &$options['data'], 'info' => array());
$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', array('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 $valid_params = array(
"LW",
"LC",
"LC",
"LJ",
"ML",
"D",
"RI",
"OP",
"op",
"OPM",
"Font",
"BG",
"BG2",
"UCR",
"TR",
"TR2",
"HT",
"FL",
"SM",
"SA",
"BM",
"SMask",
"CA",
"ca",
"AIS",
"TK"
);
switch ($action) {
case "new":
$this->objects[$id] = array('t' => 'extGState', 'info' => $options);
// Tell the pages about the new resource
$this->numStates++;
$this->o_pages($this->currentNode, 'extGState', array("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;
}
/**
* 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] = array('t' => 'encryption', 'info' => $options);
$this->arc4_objnum = $id;
// 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);
$len = mb_strlen($options['owner'], '8bit');
if ($len > 32) {
$owner = substr($options['owner'], 0, 32);
} else {
if ($len < 32) {
$owner = $options['owner'] . substr($pad, 0, 32 - $len);
} else {
$owner = $options['owner'];
}
}
$len = mb_strlen($options['user'], '8bit');
if ($len > 32) {
$user = substr($options['user'], 0, 32);
} else {
if ($len < 32) {
$user = $options['user'] . substr($pad, 0, 32 - $len);
} else {
$user = $options['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 . $ovalue . chr($options['p']) . chr(255) . chr(255) . chr(255) . $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;
$this->encryptionKey = $ukey;
// 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'], true, false) . ')';
$res .= "\n/U (" . $this->filterText($o['info']['U'], true, 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;
}
/**
* 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 = array('type' => 'link', 'url' => $url, 'rect' => array($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 = array('type' => 'ilink', 'label' => $label, 'rect' => array($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 = array())
{
$p = bindec("11000000");
$options = array('print' => 4, 'modify' => 8, 'copy' => 16, 'add' => 32);
foreach ($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', array('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;
$this->o_catalog($id, 'javascript', $js_id);
}
if ($this->arc4_objnum) {
$this->ARC4_init($this->encryptionKey);
}
$this->checkAllHere();
$xref = array();
$content = '%PDF-1.3';
$pos = mb_strlen($content, '8bit');
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 $this->arc4_objnum 0 R\n";
}
if (mb_strlen($this->fileIdentifier, '8bit')) {
$content .= "/ID[<$this->fileIdentifier><$this->fileIdentifier>]\n";
}
// account for \n added at start of xref table
$pos++;
$content .= ">>\nstartxref\n$pos\n%%EOF\n";
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 = array(0, 0, 612, 792))
{
$this->numObj = 0;
$this->objects = array();
$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 == '') {
$fontcache = rtrim($dir, DIRECTORY_SEPARATOR."/\\");
}
//$name filename without folder and extension of font metrics
//$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.php";
$this->addMessage("metrics: $metrics_name, cache: $cache_name");
if (file_exists($fontcache . '/' . $cache_name)) {
$this->addMessage("openFont: php file exists $fontcache/$cache_name");
$this->fonts[$font] = require($fontcache . '/' . $cache_name);
if (!isset($this->fonts[$font]['_version_']) || $this->fonts[$font]['_version_'] != $this->fontcacheVersion) {
// if the font file is old, then clear it out and prepare for re-creation
$this->addMessage('openFont: clear out, make way for new version.');
$this->fonts[$font] = null;
unset($this->fonts[$font]);
}
} else {
$old_cache_name = "php_$metrics_name";
if (file_exists($fontcache . '/' . $old_cache_name)) {
$this->addMessage(
"openFont: php file doesn't exist $fontcache/$cache_name, creating it from the old format"
);
$old_cache = file_get_contents($fontcache . '/' . $old_cache_name);
file_put_contents($fontcache . '/' . $cache_name, '<?php return ' . $old_cache . ';');
$this->openFont($font);
return;
}
}
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 = array();
// 20 => 'space'
$data['codeToName'] = array();
// 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));
$dtmp = array();
foreach ($bits as $bit) {
$bits2 = explode(' ', trim($bit));
if (mb_strlen($bits2[0], '8bit') == 0) {
continue;
}
if (count($bits2) > 2) {
$dtmp[$bits2[0]] = array();
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 ($c >= 0) {
if ($c != hexdec($n)) {
$data['codeToName'][$c] = $n;
}
$data['C'][$c] = $width;
} else {
$data['C'][$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));
$dtmp = array();
foreach ($bits as $bit) {
$bits2 = explode(' ', trim($bit));
if (mb_strlen($bits2[0], '8bit') === 0) {
continue;
}
if (count($bits2) > 2) {
$dtmp[$bits2[0]] = array();
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($glyph & 0xFF);
}
if ($c != hexdec($n)) {
$data['codeToName'][$c] = $n;
}
$data['C'][$c] = $width;
} else {
$data['C'][$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 . '/' . $cache_name, '<?php return ' . var_export($data, true) . ';');
}
$data = null;
}
if (!isset($this->fonts[$font])) {
$this->addMessage("openFont: no font file found for $font. Do you need to run load_font.php?");
}
//pre_r($this->messages);
}
/**
* 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 $fontName
* @param string $encoding
* @param bool $set
* @return int
*/
function selectFont($fontName, $encoding = '', $set = true)
{
$ext = substr($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);
$dir = dirname($fontName) . '/';
$options = array('name' => $name, 'fontFileName' => $fontName);
if (is_array($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;
}
}
$fontObj = $this->numObj;
$this->o_font($this->numObj, 'new', $options);
$font['fontNum'] = $this->numFonts;
// if this is a '.afm' font, and there is a '.pfa' file to go with it (as there
// should be for all non-basic fonts), then load it into an object and put the
// references into the font object
$basefile = $fontName;
$fbtype = '';
if (file_exists("$basefile.ttf")) {
$fbtype = 'ttf';
} elseif (file_exists("$basefile.TTF")) {
$fbtype = 'TTF';
} elseif (file_exists("$basefile.pfb")) {
$fbtype = 'pfb';
} elseif (file_exists("$basefile.PFB")) {
$fbtype = 'PFB';
}
$fbfile = "$basefile.$fbtype";
// $pfbfile = substr($fontName,0,strlen($fontName)-4).'.pfb';
// $ttffile = substr($fontName,0,strlen($fontName)-4).'.ttf';
$this->addMessage('selectFont: checking for - ' . $fbfile);
// OAR - I don't understand this old check
// if (substr($fontName, -4) === '.afm' && strlen($fbtype)) {
if ($fbtype) {
$adobeFontName = isset($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 = array();
$cid_widths = array();
foreach ($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 = $num;
}
}
// also need to adjust the widths for the differences array
if (isset($options['differences'])) {
foreach ($options['differences'] as $charNum => $charName) {
if ($charNum > $lastChar) {
if (!$font['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'])) {
$stemV = 120;
}
}
// load the pfb file, and put that into an object too.
// note that pdf supports only binary format type 1 font files, though there is a
// simple utility to convert them from pfa to pfb.
// FIXME: should we move font subset creation to CPDF::output? See notes in issue #750.
if (!$this->isUnicode || strtolower($fbtype) !== 'ttf' || empty($this->stringSubsets)) {
$data = file_get_contents($fbfile);
} else {
$this->stringSubsets[$fontName][] = 32; // Force space if not in yet
$subset = $this->stringSubsets[$fontName];
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 = $this->tmp . "/" . basename($fbfile) . ".tmp." . uniqid();
$font_obj->open($tmp_name, BinaryStream::modeWrite);
$font_obj->encode(array("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");
$font['CIDWidths'] = array();
foreach ($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 = array(
'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 = array(
'Flags' => $flags,
'FontName' => $adobeFontName,
'StemV' => $stemV
);
foreach ($list as $k => $v) {
if (isset($font[$v])) {
$fdopt[$k] = $font[$v];
}
}
if (strtolower($fbtype) === 'pfb') {
$fdopt['FontFile'] = $pfbid;
} elseif (strtolower($fbtype) === 'ttf') {
$fdopt['FontFile2'] = $pfbid;
}
$this->o_fontDescriptor($fontDescriptorId, 'new', $fdopt);
// embed the font program
$this->o_contents($this->numObj, 'new');
$this->objects[$pfbid]['c'] .= $data;
// determine the cruicial lengths within this file
if (strtolower($fbtype) === 'pfb') {
$l1 = strpos($data, 'eexec') + 6;
$l2 = strpos($data, '00000000') - $l1;
$l3 = mb_strlen($data, '8bit') - $l2 - $l1;
$this->o_contents(
$this->numObj,
'add',
array('Length1' => $l1, 'Length2' => $l2, 'Length3' => $l3)
);
} elseif (strtolower($fbtype) == 'ttf') {
$l1 = mb_strlen($data, '8bit');
$this->o_contents($this->numObj, 'add', array('Length1' => $l1));
}
// tell the font object about all this new stuff
$tmp = array(
'BaseFont' => $adobeFontName,
'MissingWidth' => $missing_width,
'Widths' => $widthid,
'FirstChar' => $firstChar,
'LastChar' => $lastChar,
'FontDescriptor' => $fontDescriptorId
);
if (strtolower($fbtype) === 'ttf') {
$tmp['SubType'] = 'TrueType';
}
$this->addMessage("adding extra info to font.($fontObj)");
foreach ($tmp as $fk => $fv) {
$this->addMessage("$fk : $fv");
}
$this->o_font($fontObj, 'add', $tmp);
} else {
$this->addMessage(
'selectFont: pfb or ttf file not found, ok if this is one of the 14 standard fonts'
);
}
// also set the differences here, note that this means that these will take effect only the
//first time that a font is selected, else they are ignored
if (isset($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'];
//$this->setCurrentFont();
}
return $this->currentFontNum;
//return $this->numObj;
}
/**
* sets up the current font, based on the font families, and the current text state
* note that this system is quite flexible, a bold-italic font can be completely different to a
* italic-bold font, and even bold-bold will have to be defined within the family to have meaning
* This function is to be called whenever the currentTextState is changed, it will update
* the currentFont setting to whatever the appropriate family one is.
* If the user calls selectFont themselves then that will reset the currentBaseFont, and the currentFont
* This function will change the currentFont to whatever it should be, but will not change the
* currentBaseFont.
*/
private function setCurrentFont()
{
// if (strlen($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 $color
* @param bool $force
*/
function setColor($color, $force = false)
{
$new_color = array($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));
}
}
}
/**
* sets the color for fill operations
*
* @param $fillRule
*/
function setFillRule($fillRule)
{
if (!in_array($fillRule, array("nonzero", "evenodd"))) {
return;
}
$this->fillRule = $fillRule;
}
/**
* sets the color for stroke operations
*
* @param $color
* @param bool $force
*/
function setStrokeColor($color, $force = false)
{
$new_color = array($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 $blend_modes = array(
"Normal",
"Multiply",
"Screen",
"Overlay",
"Darken",
"Lighten",
"ColorDogde",
"ColorBurn",
"HardLight",
"SoftLight",
"Difference",
"Exclusion"
);
if (!in_array($mode, $blend_modes)) {
$mode = "Normal";
}
// Only create a new graphics state if required
if ($mode === $this->currentLineTransparency["mode"] &&
$opacity == $this->currentLineTransparency["opacity"]
) {
return;
}
$this->currentLineTransparency["mode"] = $mode;
$this->currentLineTransparency["opacity"] = $opacity;
$options = array(
"BM" => "/$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 $blend_modes = array(
"Normal",
"Multiply",
"Screen",
"Overlay",
"Darken",
"Lighten",
"ColorDogde",
"ColorBurn",
"HardLight",
"SoftLight",
"Difference",
"Exclusion"
);
if (!in_array($mode, $blend_modes)) {
$mode = "Normal";
}
if ($mode === $this->currentFillTransparency["mode"] &&
$opacity == $this->currentFillTransparency["opacity"]
) {
return;
}
$this->currentFillTransparency["mode"] = $mode;
$this->currentFillTransparency["opacity"] = $opacity;
$options = array(
"BM" => "/$mode",
"ca" => (float)$opacity,
);
$this->setGraphicsState($options);
}
/**
* draw a line from one set of coordinates to another
*
* @param $x1
* @param $y1
* @param $x2
* @param $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 $x0
* @param $y0
* @param $x1
* @param $y1
* @param $x2
* @param $y2
* @param $x3
* @param $y3
*/
function curve($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 $x0
* @param $y0
* @param $astart
* @param $afinish
* @param $r1
* @param int $r2
* @param int $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 $x0
* @param $y0
* @param $r1
* @param int $r2
* @param int $angle
* @param int $nSeg
* @param int $astart
* @param int $afinish
*/
function filledEllipse($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 $x
* @param $y
*/
function lineTo($x, $y)
{
$this->addContent(sprintf("\n%.3F %.3F l", $x, $y));
}
/**
* @param $x
* @param $y
*/
function moveTo($x, $y)
{
$this->addContent(sprintf("\n%.3F %.3F m", $x, $y));
}
/**
* draw a bezier curve based on 4 control points
*
* @param $x1
* @param $y1
* @param $x2
* @param $y2
* @param $x3
* @param $y3
*/
function curveTo($x1, $y1, $x2, $y2, $x3, $y3)
{
$this->addContent(sprintf("\n%.3F %.3F %.3F %.3F %.3F %.3F c", $x1, $y1, $x2, $y2, $x3, $y3));
}
function closePath()
{
//$this->addContent(' s');
}
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 $x0
* @param $y0
* @param $r1
* @param int $r2
* @param int $angle
* @param int $nSeg
* @param int $astart
* @param int $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 int $width
* @param string $cap
* @param string $join
* @param string $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";
}
$ca = array('butt' => 0, 'round' => 1, 'square' => 2);
if (isset($ca[$cap])) {
$string .= " $ca[$cap] J";
}
$ja = array('miter' => 0, 'round' => 1, 'bevel' => 2);
if (isset($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 $p
* @param $np
* @param bool $f
*/
function polygon($p, $np, $f = false)
{
$this->addContent(sprintf("\n%.3F %.3F m ", $p[0], $p[1]));
for ($i = 2; $i < $np * 2; $i = $i + 2) {
$this->addContent(sprintf("%.3F %.3F l ", $p[$i], $p[$i + 1]));
}
if ($f) {
$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 $x1
* @param $y1
* @param $width
* @param $height
*/
function filledRectangle($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 $x1
* @param $y1
* @param $width
* @param $height
*/
function rectangle($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 $x1
* @param $y1
* @param $width
* @param $height
*/
function rect($x1, $y1, $width, $height)
{
$this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re", $x1, $y1, $width, $height));
}
function stroke()
{
$this->addContent("\nS");
}
function fill()
{
$this->addContent("\nf" . ($this->fillRule === "evenodd" ? "*" : ""));
}
function fillStroke()
{
$this->addContent("\nb" . ($this->fillRule === "evenodd" ? "*" : ""));
}
/**
* 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 $x1
* @param $y1
* @param $width
* @param $height
*/
function clippingRectangle($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 $x1
* @param $y1
* @param $w
* @param $h
* @param $rTL
* @param $rTR
* @param $rBR
* @param $rBL
*/
function clippingRectangleRounded($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");
}
/**
* 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 = array(
$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 = array(
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 = array(
$cos_a,
-$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));
$tm = array(
1,
-$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 = array('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;
}
/**
* output the pdf code, streaming it to the browser
* the relevant headers are set so that hopefully the browser will recognise it
*
* @param string $options
*/
function stream($options = '')
{
// setting the options allows the adjustment of the headers
// values at the moment are:
// 'Content-Disposition' => 'filename' - sets the filename, though not too sure how well this will
// work as in my trial the browser seems to use the filename of the php file with .pdf on the end
// 'Accept-Ranges' => 1 or 0 - if this is not set to 1, then this header is not included, off by default
// this header seems to have caused some problems despite tha fact that it is supposed to solve
// them, so I am leaving it off by default.
// 'compress' = > 1 or 0 - apply content stream compression, this is on (1) by default
// 'Attachment' => 1 or 0 - if 1, force the browser to open a download dialog
if (!is_array($options)) {
$options = array();
}
if (headers_sent()) {
die("Unable to stream pdf: headers already sent");
}
$debug = empty($options['compression']);
$tmp = ltrim($this->output($debug));
header("Cache-Control: private");
header("Content-type: application/pdf");
//FIXME: I don't know that this is sufficient for determining content length (i.e. what about transport compression?)
header("Content-Length: " . mb_strlen($tmp, '8bit'));
$filename = (isset($options['Content-Disposition']) ? $options['Content-Disposition'] : 'document.pdf');
$filename = str_replace(array("\n", "'"), "", basename($filename, ".pdf")) . ".pdf";
if (!isset($options["Attachment"])) {
$options["Attachment"] = true;
}
$attachment = $options["Attachment"] ? "attachment" : "inline";
// detect the character encoding of the incoming file
$encoding = mb_detect_encoding($filename);
$fallbackfilename = mb_convert_encoding($filename, "ISO-8859-1", $encoding);
$encodedfallbackfilename = rawurlencode($fallbackfilename);
$encodedfilename = rawurlencode($filename);
$contentDisposition = "Content-Disposition: $attachment; filename=\"" . $encodedfallbackfilename . "\"";
if ($encodedfallbackfilename !== $encodedfilename) {
$contentDisposition .= "; filename*=UTF-8''$encodedfilename";
}
header($contentDisposition);
if (isset($options['Accept-Ranges']) && $options['Accept-Ranges'] == 1) {
//FIXME: Is this the correct value ... spec says 1#range-unit
header("Accept-Ranges: " . mb_strlen($tmp, '8bit'));
}
echo $tmp;
flush();
}
/**
* return the height in units of the current font in the given size
*
* @param $size
* @return float|int
*/
function getFontHeight($size)
{
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 $size
* @return float|int
*/
function getFontXHeight($size)
{
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 $size
* @return float|int
*/
function getFontDescender($size)
{
// 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
*
* @access private
*
* @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::$targetEncoding, 'UTF-8');
}
}
// the chr(13) substitution fixes a bug seen in TCPDF (bug #1421290)
return strtr($text, array(')' => '\\)', '(' => '\\(', '\\' => '\\\\', 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
*
* @access private
* @author Orion Richardson
* @since January 5, 2008
*
* @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(); // array containing unicode values
$bytes = array(); // 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 = array();
$numbytes = 1;
}
} elseif (($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 = array();
$numbytes = 1;
}
} else {
// use replacement character for other invalid sequences
$unicode[] = 0xFFFD;
$bytes = array();
$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
*
* @access private
* @author Orion Richardson
* @since January 5, 2008
*
* @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)
{
$cf = $this->currentFont;
if (!$this->fonts[$cf]['isUnicode']) {
return $text;
}
$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 array(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 $font
* @param $text
*/
function registerText($font, $text)
{
if (!$this->isUnicode || in_array(mb_strtolower(basename($font)), self::$coreFonts)) {
return;
}
if (!isset($this->stringSubsets[$font])) {
$this->stringSubsets[$font] = array();
}
$this->stringSubsets[$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 $x
* @param $y
* @param $size
* @param $text
* @param int $angle
* @param int $wordSpaceAdjust
* @param int $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(array("\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 = array(
'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 #)
$cf = $this->currentFont;
if ($this->fonts[$cf]['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 = array(
'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);
}
}
}
/**
* 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 $size
* @param $text
* @param int $word_spacing
* @param int $char_spacing
* @return float|int
*/
function getTextWidth($size, $text, $word_spacing = 0, $char_spacing = 0)
{
static $ord_cache = array();
// 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(array("\r", "\n"), "", $text);
// converts a number or a float to a string so it can get the width
$text = "$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);
$n_spaces = 0;
if ($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 += $word_spacing * $space_scale;
$n_spaces++;
}
}
}
// add additional char spacing
if ($char_spacing != 0) {
$w += $char_spacing * $space_scale * (count($unicode) + $n_spaces);
}
} else {
// If CPDF is in Unicode mode but the current font does not support Unicode we need to convert the character set to Windows-1252
if ($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 += $word_spacing * $space_scale;
$n_spaces++;
}
}
}
// add additional char spacing
if ($char_spacing != 0) {
$w += $char_spacing * $space_scale * ($len + $n_spaces);
}
}
$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] = array(
'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] = array('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] = array('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;
}
/**
* add content to the documents info object
*
* @param $label
* @param int $value
*/
function addInfo($label, $value = 0)
{
// 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, $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', array($l => $v));
}
} else {
$this->o_catalog($this->catalogId, 'viewerPreferences', array($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 $imgname
* @return bool
*/
function image_iscached($imgname)
{
return isset($this->imagelist[$imgname]);
}
/**
* add a PNG image into the document, from a GD object
* this should work with remote files
*
* @param string $file The PNG file
* @param float $x X position
* @param float $y Y position
* @param float $w Width
* @param float $h Height
* @param resource $img A GD resource
* @param bool $is_mask true if the image is a mask
* @param bool $mask true if the image is masked
* @throws Exception
*/
function addImagePng($file, $x, $y, $w = 0.0, $h = 0.0, &$img, $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)
$this->addPngFromBuf($file, $x, $y, $w, $h, $data, $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 = version_compare(Imagick::IMAGICK_EXTVER, '3.0.1rc1') > 0;
}
$imagick = new \Imagick($file);
$imagick->setFormat('png');
// Get opacity channel (negative of alpha channel)
$alpha_channel = $imagickClonable ? clone $imagick : $imagick->clone();
$alpha_channel->separateImageChannel(\Imagick::CHANNEL_ALPHA);
$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);
// 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
$allocated_colors = array();
// extract alpha channel
for ($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 = 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);
}
// embed mask image
$this->addImagePng($tempfile_alpha, $x, $y, $w, $h, $imgalpha, true);
imagedestroy($imgalpha);
// embed image, masked with previously embedded mask
$this->addImagePng($tempfile_plain, $x, $y, $w, $h, $imgplain, false, true);
imagedestroy($imgplain);
// remove temp files
unlink($tempfile_alpha);
unlink($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, $h = 0)
{
if (!function_exists("imagecreatefrompng")) {
throw new \Exception("The PHP GD extension is required, but is not installed.");
}
//if already cached, need not to read again
if (isset($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, array(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);
}
$this->addImagePng($file, $x, $y, $w, $h, $img);
if ($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();
$this->transform(array($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 $file
* @param $x
* @param $y
* @param float $w
* @param float $h
* @param $data
* @param bool $is_mask
* @param null $mask
*/
function addPngFromBuf($file, $x, $y, $w = 0.0, $h = 0.0, &$data, $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 = array();
$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";
$transparency = array();
switch ($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 = array(
'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] = array('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, $x, $y, $w, $h, $imageWidth, $imageHeight, $channels, $img);
}
/**
* common code used by the two JPEG adding functions
* @param $data
* @param $x
* @param $y
* @param int $w
* @param int $h
* @param $imageWidth
* @param $imageHeight
* @param int $channels
* @param $imgname
*/
private function addJpegImage_common(
&$data,
$x,
$y,
$w = 0,
$h = 0,
$imageWidth,
$imageHeight,
$channels = 3,
$imgname
) {
if ($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',
array(
'label' => $label,
'data' => &$data,
'iw' => $imageWidth,
'ih' => $imageHeight,
'channels' => $channels
)
);
$this->imagelist[$imgname] = array(
'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',
array('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',
array('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'] =
array(
'b' => 'Helvetica-Bold.afm',
'i' => 'Helvetica-Oblique.afm',
'bi' => 'Helvetica-BoldOblique.afm',
'ib' => 'Helvetica-BoldOblique.afm'
);
$this->fontFamilies['Courier.afm'] =
array(
'b' => 'Courier-Bold.afm',
'i' => 'Courier-Oblique.afm',
'bi' => 'Courier-BoldOblique.afm',
'ib' => 'Courier-BoldOblique.afm'
);
$this->fontFamilies['Times-Roman.afm'] =
array(
'b' => 'Times-Bold.afm',
'i' => 'Times-Italic.afm',
'bi' => 'Times-BoldItalic.afm',
'ib' => 'Times-BoldItalic.afm'
);
}
} else {
// the user is trying to set a font family
// note that this can also be used to set the base ones to something else
if (mb_strlen($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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