Zend Framework

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.8.4
• Fix Version/s: None
• Component/s: Zend_Pdf
• Labels:

  None

Hi,

When generating pdfs through Zend_Pdf, I felt the need of finding the width of the text to be drawn.
Purpose is to be able to horizontally center text, align it to right and more.

It looks like other people felt that need too, here is a function found on internet that does it pretty well and it would be great to have it incorporated natively within Zend_Pdf_Page.

/**
 * Return length of generated string in points
 *
 * @param string $string
 * @param Zend_Pdf_Resource_Font $font
 * @param int $font_size
 * @return double
 */
public function getTextWidth($text, Zend_Pdf_Resource_Font $font, $font_size) 
{
	$drawing_text = iconv('', 'UTF-16BE', $text);
	$characters    = array();
	for ($i = 0; $i < strlen($drawing_text); $i++) {
		$characters[] = (ord($drawing_text[$i++]) << 8) | ord ($drawing_text[$i]);
	}
	$glyphs        = $font->glyphNumbersForCharacters($characters);
	$widths        = $font->widthsForGlyphs($glyphs);
	$text_width   = (array_sum($widths) / $font->getUnitsPerEm()) * $font_size;
	return $text_width;	
}

ps: maybe Zend_Pdf_Style::getLineWidth() is related to this topic, but I could not find any info on the doc nor in the code.

• Assignee:

  Alexander Veremyev

  Reporter:

  Remy Damour

• Created:

  27/Jun/09 4:57 PM

  Updated:

  27/Jun/09 4:57 PM