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<?php |
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/** |
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* webtrees-lib: MyArtJaub library for webtrees |
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* |
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* @package MyArtJaub\Webtrees |
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* @subpackage Sosa |
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* @author Jonathan Jaubart <[email protected]> |
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* @copyright Copyright (c) 2020-2022, Jonathan Jaubart |
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* @license http://www.gnu.org/licenses/gpl.html GNU General Public License, version 3 |
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*/ |
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declare(strict_types=1); |
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namespace MyArtJaub\Webtrees\Module\Certificates\Model; |
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/** |
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* Model class for watermark to be applied to a certificate image. |
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*/ |
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class Watermark |
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{ |
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/** |
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* Default font color for watermarks |
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* @var string DEFAULT_COLOR |
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* */ |
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public const DEFAULT_COLOR = '#4D6DF3'; |
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/** |
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* Default maximum font size for watermarks |
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* @var int DEFAULT_SIZE |
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* */ |
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public const DEFAULT_SIZE = 18; |
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/** |
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* @var string $text |
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*/ |
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private $text; |
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/** |
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* @var string $color; |
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*/ |
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private $color; |
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/** |
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* @var int $size |
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*/ |
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private $size; |
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/** |
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* Constructor for Watermark data class |
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* |
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* @param string $text |
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* @param string $color |
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* @param int $size |
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*/ |
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public function __construct(string $text, string $color, int $size) |
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{ |
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$this->text = $text; |
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$this->color = $color; |
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$this->size = $size; |
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} |
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/** |
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* Get the watermark text. |
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* |
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* @return string |
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*/ |
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public function text(): string |
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{ |
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return $this->text; |
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} |
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/** |
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* Get the watermark font color. |
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* |
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* @return string |
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*/ |
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public function color(): string |
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{ |
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return $this->color; |
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} |
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/** |
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* Get the watermark maximum font size. |
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* @return int |
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*/ |
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public function size(): int |
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{ |
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return $this->size; |
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} |
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/** |
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* Return an estimate of the size in pixels of the watermark text length. |
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* |
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* @return int |
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*/ |
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public function textLengthEstimate(): int |
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{ |
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return $this->stringLengthEstimate(mb_strlen($this->text), $this->size); |
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} |
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/** |
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* Decrease the font size if necessary, based on the image width. |
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* |
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* @param int $width |
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*/ |
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public function adjustSize(int $width): void |
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{ |
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$len = mb_strlen($this->text); |
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while ($this->stringLengthEstimate($len, $this->size) > 0.9 * $width) { |
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$this->size--; |
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if ($this->size === 2) { |
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return; |
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} |
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} |
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} |
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/** |
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* Return an estimate of the size in pixels of a text in a specified font size. |
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* |
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* @param int $text_length |
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* @param int $font_size |
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* @return int |
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*/ |
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private function stringLengthEstimate(int $text_length, int $font_size): int |
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{ |
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return $text_length * (int) ceil(($font_size + 2) * 0.5); |
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} |
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} |
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jon48 /
webtrees-lib
