Erkan IŞIK
110 lines
2.8 KiB
PHP
110 lines
2.8 KiB
PHP
<?php namespace ZN\Image;
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/**
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* ZN PHP Web Framework
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*
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* "Simplicity is the ultimate sophistication." ~ Da Vinci
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*
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* @package ZN
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* @license MIT [http://opensource.org/licenses/MIT]
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* @author Ozan UYKUN [ozan@znframework.com]
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*/
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class WatermarkImageAligner
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{
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/**
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* It forms the alignment values according to conformation.
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*
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* @param string $type - options
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* [
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* topleft |topcenter |topright
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* middleleft|center |middleright
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* bottomleft|bottomcenter|bottomright
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* ]
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* @param string $sourceWidth
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* @param string $sourceHeight
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* @param string $targetWidth
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* @param string $targetHeight
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* @param int $margin
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*
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* @return array - [x, y]
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*/
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public static function align($type, $swidth, $sheight, $twidth, $theight, $margin)
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{
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switch( strtolower($type) )
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{
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case 'center':
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{
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$x = self::alignCenter($twidth , $swidth);
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$y = self::alignCenter($theight, $sheight);
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}
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break;
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case 'topleft':
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{
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$x = $margin;
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$y = $margin;
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}
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break;
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case 'topcenter':
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{
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$x = self::alignCenter($twidth , $swidth);
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$y = $margin;
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}
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break;
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case 'topright':
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{
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$x = self::alignEdge($twidth, $swidth, -$margin);
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$y = $margin;
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}
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break;
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case 'middleleft':
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{
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$x = $margin;
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$y = self::alignCenter($theight, $sheight);
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}
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break;
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case 'middleright':
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{
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$x = self::alignEdge($twidth, $swidth, -$margin);
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$y = self::alignCenter($theight, $sheight);
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}
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break;
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case 'bottomleft':
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{
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$x = $margin;
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$y = self::alignEdge($theight, $sheight, -$margin);
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}
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break;
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case 'bottomcenter':
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{
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$x = self::alignCenter($twidth, $swidth);
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$y = self::alignEdge($theight, $sheight, -$margin);
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}
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break;
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case 'bottomright':
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{
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$x = self::alignEdge($twidth , $swidth , -$margin);
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$y = self::alignEdge($theight, $sheight, -$margin);
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}
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break;
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}
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return [$x, $y];
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}
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/**
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* Protected align left
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*/
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protected static function alignEdge($val1, $val2, $margin)
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{
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return $val1 - $val2 + $margin;
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}
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/**
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* Protected align center
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*/
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protected static function alignCenter($val1, $val2)
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{
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return ($val1 / 2) - ($val2 / 2);
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}
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}
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