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| 1 | <?php |
| 2 | /** |
| 3 | * Pop PHP Framework (http://www.popphp.org/) |
| 4 | * |
| 5 | * @link https://github.com/popphp/popphp-framework |
| 6 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 7 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 8 | * @license http://www.popphp.org/license New BSD License |
| 9 | */ |
| 10 | |
| 11 | /** |
| 12 | * @namespace |
| 13 | */ |
| 14 | namespace Pop\Image\Layer; |
| 15 | |
| 16 | /** |
| 17 | * Layer class for Gd |
| 18 | * |
| 19 | * @category Pop |
| 20 | * @package Pop\Image |
| 21 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 22 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 23 | * @license http://www.popphp.org/license New BSD License |
| 24 | * @version 4.0.0 |
| 25 | */ |
| 26 | class Gd extends AbstractLayer |
| 27 | { |
| 28 | |
| 29 | /** |
| 30 | * Opacity |
| 31 | * @var int|float|null |
| 32 | */ |
| 33 | protected int|float|null $opacity = 100; |
| 34 | |
| 35 | /** |
| 36 | * Overlay an image onto the current image. |
| 37 | * |
| 38 | * @param string $image |
| 39 | * @param int $x |
| 40 | * @param int $y |
| 41 | * @throws Exception |
| 42 | * @return Gd |
| 43 | */ |
| 44 | public function overlay(string $image, int $x = 0, int $y = 0): Gd |
| 45 | { |
| 46 | if ($this->hasImage()) { |
| 47 | imagealphablending($this->image->getResource(), true); |
| 48 | |
| 49 | // Create an image resource from the overlay image. |
| 50 | if (stripos($image, '.gif') !== false) { |
| 51 | $overlay = imagecreatefromgif($image); |
| 52 | } else if (stripos($image, '.png') !== false) { |
| 53 | $overlay = imagecreatefrompng($image); |
| 54 | } else if (stripos($image, '.jp') !== false) { |
| 55 | $overlay = imagecreatefromjpeg($image); |
| 56 | } else { |
| 57 | throw new Exception('Error: The overlay image must be either a JPG, GIF or PNG.'); |
| 58 | } |
| 59 | |
| 60 | if ($this->opacity > 0) { |
| 61 | if ($this->opacity == 100) { |
| 62 | imagecopy($this->image->getResource(), $overlay, $x, $y, 0, 0, imagesx($overlay), imagesy($overlay)); |
| 63 | } else { |
| 64 | imagecopymerge( |
| 65 | $this->image->getResource(), $overlay, $x, $y, 0, 0, imagesx($overlay), imagesy($overlay), $this->opacity |
| 66 | ); |
| 67 | } |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | return $this; |
| 72 | } |
| 73 | |
| 74 | } |