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Add Image->overlayText method #604

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Add Image->overlayText method #604

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52 changes: 51 additions & 1 deletion lib/image.php
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Original file line number Diff line number Diff line change
Expand Up @@ -263,6 +263,56 @@ function rotate($angle) {
$this->data=imagerotate($this->data,$angle,
imagecolorallocatealpha($this->data,0,0,0,127));
imagesavealpha($this->data,TRUE);
return $this->save();
}
/**
* Apply a text overlay
* @return object
* @param $string string
* @param $font string
* @param $fontSize int
* @param $align int
* @param $colour string
* @param $shadow string
**/
function overlayText($string,$font='arial', $fontSize = 13, $align=NULL, $colour="255,255,255", $shadow="") {
if (is_null($align))
$align=self::POS_Right|self::POS_Bottom;

$imgw=$this->width();
$imgh=$this->height();

$pos_string = imagettfbbox($fontSize, 0, $font, $string);
$width = abs($pos_string[4] - $pos_string[0]); $height = abs($pos_string[5] - $pos_string[1]);

if ($align & self::POS_Left)
$posx=0;
if ($align & self::POS_Center)
$posx=($imgw-$width)/2;
if ($align & self::POS_Right)
$posx=$imgw-$width;
if ($align & self::POS_Top)
$posy=0;
if ($align & self::POS_Middle)
$posy=($imgh-$height)/2;
if ($align & self::POS_Bottom)
$posy=$imgh-$height;
if (empty($posx))
$posx=0;
if (empty($posy))
$posy=0;


$fw=Base::instance();
$colour = $fw->split($colour);
if ($shadow){
$shadow = $fw->split($shadow);
imagettftext($this->data, $fontSize, 0, $posx+1, $posy+1, imagecolorallocate($this->data,$shadow[0],$shadow[1],$shadow[2]), $font, $string);
}
imagettftext($this->data, $fontSize, 0, $posx, $posy, imagecolorallocate($this->data,$colour[0],$colour[1],$colour[2]), $font, $string);



return $this->save();
}

Expand All @@ -272,7 +322,7 @@ function rotate($angle) {
* @param $img object
* @param $align int
**/
function overlay(Image $img,$align=NULL) {
function overlayImage(Image $img,$align=NULL) {
if (is_null($align))
$align=self::POS_Right|self::POS_Bottom;
$ovr=imagecreatefromstring($img->dump());
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