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Extracted fonts implementation
Thes class allows to extract fonts already mentioned within PDF document and use them for text drawing.

__construct(
mixed $fontDictionary
)
:
void
Object constructor
$fontDictionary is a Zend_Pdf_Element_Reference or Zend_Pdf_Element_Object object
Name | Type | Description |
---|---|---|
$fontDictionary | mixed |
Exception | Description |
---|---|
\Zend_Pdf_Exception |

decodeString(
string $string, string $charEncoding
)
:
string
Convert string from the font encoding.
The method is used to convert strings retrieved from existing content streams
Name | Type | Description |
---|---|---|
$string | string | |
$charEncoding | string | Character encoding of resulting text. |
Type | Description |
---|---|
string |

encodeString(
string $string, string $charEncoding
)
:
string
Convert string to the font encoding.
The method is used to prepare string for text drawing operators
Name | Type | Description |
---|---|---|
$string | string | |
$charEncoding | string | Character encoding of source text. |
Type | Description |
---|---|
string |

getCoveredPercentage(
string $string, string $charEncoding
=
''
)
:
float
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.
Name | Type | Description |
---|---|---|
$string | string | |
$charEncoding | string | (optional) Character encoding of source text. If omitted, uses 'current locale'. |
Type | Description |
---|---|
float |

glyphNumberForCharacter(
integer $characterCode
)
:
integer
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.
Name | Type | Description |
---|---|---|
$characterCode | integer | Unicode character code (code point). |
Type | Description |
---|---|
integer | Glyph number. |

glyphNumbersForCharacters(
array $characterCodes
)
:
array
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()}.
Name | Type | Description |
---|---|---|
$characterCodes | array | Array of Unicode character codes (code points). |
Type | Description |
---|---|
array | Array of glyph numbers. |

widthForGlyph(
integer $glyphNumber
)
:
integer
Returns the width of the glyph.
Like {@link widthsForGlyphs()} but used for one glyph at a time.
Name | Type | Description |
---|---|---|
$glyphNumber | integer |
Type | Description |
---|---|
integer |
Exception | Description |
---|---|
\Zend_Pdf_Exception |

widthsForGlyphs(
array $glyphNumbers
)
:
array
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()}.
Name | Type | Description |
---|---|---|
$glyphNumbers | array | Array of glyph numbers. |
Type | Description |
---|---|
array | Array of glyph widths (integers). |
Exception | Description |
---|---|
\Zend_Pdf_Exception |