web/enmi/Zend/Pdf/Resource/Font/Extracted.php
changeset 19 1c2f13fd785c
parent 0 4eba9c11703f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/enmi/Zend/Pdf/Resource/Font/Extracted.php	Thu Jan 20 19:30:54 2011 +0100
@@ -0,0 +1,274 @@
+<?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 20866 2010-02-03 05:30:07Z 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);
+    }
+}