File: triImage.php3

<?

if(!defined("__TriImage_class__")) {
    define("__IriImage_class__",1);

class TriImageClass
{

/**********************************************************************************
TriImage Class  -- written for PHP 3.x
by Kris Kumler
I have a lot of work to be done here, as you can tell. I should finish with this class
within a couple of weeks, but thought some people could get some use out of it...
mainly getTextyPos, which I will also add a much more simple set of function calls...
**********************************************************************************/

/* these functions are made to work for text that has an angle of 0
when i have time someday i'll change it to work with angles as well...
*/


	var $defont;
	var $defontSize;
	var $deangle;
	var $destring;
	
	
	function TriImageClass()	// constructor
	{
		$this->defont = "fonts/times.ttf";
		$this->defontSize = 24;
		$this->deangle = 0;
		$this->destring = "Test";	
	}
	
	/* function getImageWidth(...)
	   returns the total width that a true type font box requires
	*/
	function getTextWidth($font = -1, $fontSize = -1, $angle = -1, $string = -1)
	{
	if ($font == -1) { $font = $this->defont;}
	if ($fontSize == -1) { $fontSize = $this->defontSize;}
	if ($angle == -1) { $angle = $this->deangle;}
	if ($string == -1) { $string = $this->destring;}
	
		$imSize = ImageTTFBBox($fontSize,$angle,$font,$string);
		$totalWidth = abs($imSize[4]-$imSize[0]);
		return $totalWidth;
	} // function getImageWidth


	/* function getTextHeight(...)
	   returns the total height that a true type font box requires
	*/
	function getTextHeight($font = -1, $fontSize = -1, $angle = -1, $string = -1)
	{
	if ($font == -1) { $font = $this->defont;}
	if ($fontSize == -1) { $fontSize = $this->defontSize;}
	if ($angle == -1) { $angle = $this->deangle;}
	if ($string == -1) { $string = $this->destring;}
		$imSize = ImageTTFBBox($fontSize,$angle,$font,$string);
		$upper = $imSize[5];
		$lower = $imSize[1];
		$totalHeight = abs($lower+$upper);
		return $totalHeight;	
	}
	
	/* function getTextxPos(...)
	   returns the approximate x position to use (to center) the text box.
	*/
	function getTextxPos($im = 0, $width = 0)
	{
		return abs(imagesx($im)-$width)/2;
	} // function getTextxPos
		
		
	/* function getTextyPos(...)
	   returns the approximate y position to use (to center) for the actual text box.
	   works well for multi-line messages with the ttf fonts I use
	*/
	function getTextyPos($im = 0, $height = 0)
	{
		return abs((imagesy($im) - $height))/2;
	} // function getTextyPos
	
} // class TriImageClass
} 
?>