Benötigte Pakete installiert

vendor/dompdf/php-svg-lib/src/Svg/CssLength.php

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+<?php
+
+namespace Svg;
+
+class CssLength
+{
+    /**
+     * Array of valid css length units.
+     * Should be pre-sorted by unit text length so no earlier length can be
+     * contained within a latter (eg. 'in' within 'vmin').
+     *
+     * @var string[]
+     */
+    protected static $units = [
+        'vmax',
+        'vmin',
+        'rem',
+        'px',
+        'pt',
+        'cm',
+        'mm',
+        'in',
+        'pc',
+        'em',
+        'ex',
+        'ch',
+        'vw',
+        'vh',
+        '%',
+        'q',
+    ];
+
+    /**
+     * A list of units that are inch-relative, and their unit division within an inch.
+     *
+     * @var array<string, float>
+     */
+    protected static $inchDivisions = [
+        'in' => 1,
+        'cm' => 2.54,
+        'mm' => 25.4,
+        'q' => 101.6,
+        'pc' => 6,
+        'pt' => 72,
+    ];
+
+    /**
+     * The CSS length unit indicator.
+     * Will be lower-case and one of the units listed in the '$units' array or empty.
+     *
+     * @var string
+     */
+    protected $unit = '';
+
+    /**
+     * The numeric value of the given length.
+     *
+     * @var float
+     */
+    protected $value = 0;
+
+    /**
+     * The original unparsed length provided.
+     *
+     * @var string
+     */
+    protected $unparsed;
+
+    public function __construct(string $length)
+    {
+        $this->unparsed = $length;
+        $this->parseLengthComponents($length);
+    }
+
+    /**
+     * Parse out the unit and value components from the given string length.
+     */
+    protected function parseLengthComponents(string $length): void
+    {
+        $length = strtolower($length);
+
+        foreach (self::$units as $unit) {
+            $pos = strpos($length, $unit);
+            if ($pos) {
+                $this->value = floatval(substr($length, 0, $pos));
+                $this->unit = $unit;
+                return;
+            }
+        }
+
+        $this->unit = '';
+        $this->value = floatval($length);
+    }
+
+    /**
+     * Get the unit type of this css length.
+     * Units are standardised to be lower-cased.
+     *
+     * @return string
+     */
+    public function getUnit(): string
+    {
+        return $this->unit;
+    }
+
+    /**
+     * Get this CSS length in the equivalent pixel count size.
+     *
+     * @param float $referenceSize
+     * @param float $dpi
+     *
+     * @return float
+     */
+    public function toPixels(float $referenceSize = 11.0, float $dpi = 96.0): float
+    {
+        // Standard relative units
+        if (in_array($this->unit, ['em', 'rem', 'ex', 'ch'])) {
+            return $this->value * $referenceSize;
+        }
+
+        // Percentage relative units
+        if (in_array($this->unit, ['%', 'vw', 'vh', 'vmin', 'vmax'])) {
+            return $this->value * ($referenceSize / 100);
+        }
+
+        // Inch relative units
+        if (in_array($this->unit, array_keys(static::$inchDivisions))) {
+            $inchValue = $this->value * $dpi;
+            $division = static::$inchDivisions[$this->unit];
+            return $inchValue / $division;
+        }
+
+        return $this->value;
+    }
+}