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编辑当前文件:/home/c7lekhnath/silverray.com.au/vendor/intervention/image/src/Drivers/Gd/FontProcessor.php

<?php

declare(strict_types=1);

namespace Intervention\Image\Drivers\Gd;

use Intervention\Image\Drivers\AbstractFontProcessor;
use Intervention\Image\Geometry\Rectangle;
use Intervention\Image\Interfaces\FontInterface;
use Intervention\Image\Interfaces\SizeInterface;

class FontProcessor extends AbstractFontProcessor
{
    /**
     * {@inheritdoc}
     *
     * @see FontProcessorInterface::boxSize()
     */
    public function boxSize(string $text, FontInterface $font): SizeInterface
    {
        // if the font has no ttf file the box size is calculated
        // with gd's internal font system: integer values from 1-5
        if (!$font->hasFilename()) {
            // calculate box size from gd font
            $box = new Rectangle(0, 0);
            $chars = mb_strlen($text);
            if ($chars > 0) {
                $box->setWidth(
                    $chars * $this->gdCharacterWidth((int) $font->filename())
                );
                $box->setHeight(
                    $this->gdCharacterHeight((int) $font->filename())
                );
            }
            return $box;
        }

// calculate box size from ttf font file with angle 0
        $box = imageftbbox(
            $this->nativeFontSize($font),
            0,
            $font->filename(),
            $text
        );

// build size from points
        return new Rectangle(
            intval(abs($box[4] - $box[0])),
            intval(abs($box[5] - $box[1]))
        );
    }

/**
     * {@inheritdoc}
     *
     * @see FontProcessorInterface::nativeFontSize()
     */
    public function nativeFontSize(FontInterface $font): float
    {
        return floatval(round($font->size() * .76, 6));
    }

/**
     * {@inheritdoc}
     *
     * @see FontProcessorInterface::leading()
     */
    public function leading(FontInterface $font): int
    {
        return (int) round(parent::leading($font) * .8);
    }

/**
     * Return width of a single character
     *
     * @param int $gdfont
     * @return int
     */
    protected function gdCharacterWidth(int $gdfont): int
    {
        return $gdfont + 4;
    }

/**
     * Return height of a single character
     *
     * @param int $gdfont
     * @return int
     */
    protected function gdCharacterHeight(int $gdfont): int
    {
        return match ($gdfont) {
            2, 3 => 14,
            4, 5 => 16,
            default => 8,
        };
    }
}