/zend/1.10.7/Zend/Pdf/Resource/Font/Extracted.php
PHP | 274 lines | 113 code | 27 blank | 134 comment | 15 complexity | e0db97f6a1c3f25242ab70d0052208d3 MD5 | raw file
- <?php
- /**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category Zend
- * @package Zend_Pdf
- * @subpackage Fonts
- * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- * @version $Id: Extracted.php 20893 2010-02-03 22:59:25Z yoshida@zend.co.jp $
- */
- /** @see Zend_Pdf_Resource_Font */
- require_once 'Zend/Pdf/Resource/Font.php';
- /**
- * Extracted fonts implementation
- *
- * Thes class allows to extract fonts already mentioned within PDF document and use them
- * for text drawing.
- *
- * @package Zend_Pdf
- * @subpackage Fonts
- * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- class Zend_Pdf_Resource_Font_Extracted extends Zend_Pdf_Resource_Font
- {
- /**
- * Messages
- */
- const TYPE_NOT_SUPPORTED = 'Unsupported font type.';
- const ENCODING_NOT_SUPPORTED = 'Font encoding is not supported';
- const OPERATION_NOT_SUPPORTED = 'Operation is not supported for extracted fonts';
- /**
- * Extracted font encoding
- *
- * Only 'Identity-H' and 'WinAnsiEncoding' encodings are supported now
- *
- * @var string
- */
- protected $_encoding = null;
- /**
- * Object constructor
- *
- * $fontDictionary is a Zend_Pdf_Element_Reference or Zend_Pdf_Element_Object object
- *
- * @param mixed $fontDictionary
- * @throws Zend_Pdf_Exception
- */
- public function __construct($fontDictionary)
- {
- // Extract object factory and resource object from font dirctionary object
- $this->_objectFactory = $fontDictionary->getFactory();
- $this->_resource = $fontDictionary;
- if ($fontDictionary->Encoding !== null) {
- $this->_encoding = $fontDictionary->Encoding->value;
- }
- switch ($fontDictionary->Subtype->value) {
- case 'Type0':
- // Composite type 0 font
- if (count($fontDictionary->DescendantFonts->items) != 1) {
- // Multiple descendant fonts are not supported
- require_once 'Zend/Pdf/Exception.php';
- throw new Zend_Pdf_Exception(self::TYPE_NOT_SUPPORTED);
- }
- $fontDictionaryIterator = $fontDictionary->DescendantFonts->items->getIterator();
- $fontDictionaryIterator->rewind();
- $descendantFont = $fontDictionaryIterator->current();
- $fontDescriptor = $descendantFont->FontDescriptor;
- break;
- case 'Type1':
- if ($fontDictionary->FontDescriptor === null) {
- // That's one of the standard fonts
- $standardFont = Zend_Pdf_Font::fontWithName($fontDictionary->BaseFont->value);
- $this->_fontNames = $standardFont->getFontNames();
- $this->_isBold = $standardFont->isBold();
- $this->_isItalic = $standardFont->isItalic();
- $this->_isMonospace = $standardFont->isMonospace();
- $this->_underlinePosition = $standardFont->getUnderlinePosition();
- $this->_underlineThickness = $standardFont->getUnderlineThickness();
- $this->_strikePosition = $standardFont->getStrikePosition();
- $this->_strikeThickness = $standardFont->getStrikeThickness();
- $this->_unitsPerEm = $standardFont->getUnitsPerEm();
- $this->_ascent = $standardFont->getAscent();
- $this->_descent = $standardFont->getDescent();
- $this->_lineGap = $standardFont->getLineGap();
- return;
- }
- $fontDescriptor = $fontDictionary->FontDescriptor;
- break;
- case 'TrueType':
- $fontDescriptor = $fontDictionary->FontDescriptor;
- break;
- default:
- require_once 'Zend/Pdf/Exception.php';
- throw new Zend_Pdf_Exception(self::TYPE_NOT_SUPPORTED);
- }
- $this->_fontNames[Zend_Pdf_Font::NAME_POSTSCRIPT]['en'] = iconv('UTF-8', 'UTF-16BE', $fontDictionary->BaseFont->value);
- $this->_isBold = false; // this property is actually not used anywhere
- $this->_isItalic = ( ($fontDescriptor->Flags->value & (1 << 6)) != 0 ); // Bit-7 is set
- $this->_isMonospace = ( ($fontDescriptor->Flags->value & (1 << 0)) != 0 ); // Bit-1 is set
- $this->_underlinePosition = null; // Can't be extracted
- $this->_underlineThickness = null; // Can't be extracted
- $this->_strikePosition = null; // Can't be extracted
- $this->_strikeThickness = null; // Can't be extracted
- $this->_unitsPerEm = null; // Can't be extracted
- $this->_ascent = $fontDescriptor->Ascent->value;
- $this->_descent = $fontDescriptor->Descent->value;
- $this->_lineGap = null; // Can't be extracted
- }
- /**
- * Returns an array of glyph numbers corresponding to the Unicode characters.
- *
- * If a particular character doesn't exist in this font, the special 'missing
- * character glyph' will be substituted.
- *
- * See also {@link glyphNumberForCharacter()}.
- *
- * @param array $characterCodes Array of Unicode character codes (code points).
- * @return array Array of glyph numbers.
- */
- public function glyphNumbersForCharacters($characterCodes)
- {
- require_once 'Zend/Pdf/Exception.php';
- throw new Zend_Pdf_Exception(self::OPERATION_NOT_SUPPORTED);
- }
- /**
- * Returns the glyph number corresponding to the Unicode character.
- *
- * If a particular character doesn't exist in this font, the special 'missing
- * character glyph' will be substituted.
- *
- * See also {@link glyphNumbersForCharacters()} which is optimized for bulk
- * operations.
- *
- * @param integer $characterCode Unicode character code (code point).
- * @return integer Glyph number.
- */
- public function glyphNumberForCharacter($characterCode)
- {
- require_once 'Zend/Pdf/Exception.php';
- throw new Zend_Pdf_Exception(self::OPERATION_NOT_SUPPORTED);
- }
- /**
- * Returns a number between 0 and 1 inclusive that indicates the percentage
- * of characters in the string which are covered by glyphs in this font.
- *
- * Since no one font will contain glyphs for the entire Unicode character
- * range, this method can be used to help locate a suitable font when the
- * actual contents of the string are not known.
- *
- * Note that some fonts lie about the characters they support. Additionally,
- * fonts don't usually contain glyphs for control characters such as tabs
- * and line breaks, so it is rare that you will get back a full 1.0 score.
- * The resulting value should be considered informational only.
- *
- * @param string $string
- * @param string $charEncoding (optional) Character encoding of source text.
- * If omitted, uses 'current locale'.
- * @return float
- */
- public function getCoveredPercentage($string, $charEncoding = '')
- {
- require_once 'Zend/Pdf/Exception.php';
- throw new Zend_Pdf_Exception(self::OPERATION_NOT_SUPPORTED);
- }
- /**
- * Returns the widths of the glyphs.
- *
- * The widths are expressed in the font's glyph space. You are responsible
- * for converting to user space as necessary. See {@link unitsPerEm()}.
- *
- * See also {@link widthForGlyph()}.
- *
- * @param array $glyphNumbers Array of glyph numbers.
- * @return array Array of glyph widths (integers).
- * @throws Zend_Pdf_Exception
- */
- public function widthsForGlyphs($glyphNumbers)
- {
- require_once 'Zend/Pdf/Exception.php';
- throw new Zend_Pdf_Exception(self::OPERATION_NOT_SUPPORTED);
- }
- /**
- * Returns the width of the glyph.
- *
- * Like {@link widthsForGlyphs()} but used for one glyph at a time.
- *
- * @param integer $glyphNumber
- * @return integer
- * @throws Zend_Pdf_Exception
- */
- public function widthForGlyph($glyphNumber)
- {
- require_once 'Zend/Pdf/Exception.php';
- throw new Zend_Pdf_Exception(self::OPERATION_NOT_SUPPORTED);
- }
- /**
- * Convert string to the font encoding.
- *
- * The method is used to prepare string for text drawing operators
- *
- * @param string $string
- * @param string $charEncoding Character encoding of source text.
- * @return string
- */
- public function encodeString($string, $charEncoding)
- {
- if ($this->_encoding == 'Identity-H') {
- return iconv($charEncoding, 'UTF-16BE', $string);
- }
- if ($this->_encoding == 'WinAnsiEncoding') {
- return iconv($charEncoding, 'CP1252//IGNORE', $string);
- }
- require_once 'Zend/Pdf/Exception.php';
- throw new Zend_Pdf_Exception(self::ENCODING_NOT_SUPPORTED);
- }
- /**
- * Convert string from the font encoding.
- *
- * The method is used to convert strings retrieved from existing content streams
- *
- * @param string $string
- * @param string $charEncoding Character encoding of resulting text.
- * @return string
- */
- public function decodeString($string, $charEncoding)
- {
- if ($this->_encoding == 'Identity-H') {
- return iconv('UTF-16BE', $charEncoding, $string);
- }
- if ($this->_encoding == 'WinAnsiEncoding') {
- return iconv('CP1252', $charEncoding, $string);
- }
- require_once 'Zend/Pdf/Exception.php';
- throw new Zend_Pdf_Exception(self::ENCODING_NOT_SUPPORTED);
- }
- }