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<?php |
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|
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namespace TablePress\PhpOffice\PhpSpreadsheet\Helper; |
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|
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use TablePress\PhpOffice\PhpSpreadsheet\Exception; |
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use TablePress\PhpOffice\PhpSpreadsheet\Shared\Drawing; |
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use TablePress\PhpOffice\PhpSpreadsheet\Style\Font; |
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|
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class Dimension |
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{ |
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public const UOM_CENTIMETERS = 'cm'; |
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public const UOM_MILLIMETERS = 'mm'; |
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public const UOM_INCHES = 'in'; |
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public const UOM_PIXELS = 'px'; |
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public const UOM_POINTS = 'pt'; |
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public const UOM_PICA = 'pc'; |
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|
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/** |
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* Based on 96 dpi. |
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*/ |
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const ABSOLUTE_UNITS = [ |
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self::UOM_CENTIMETERS => 96.0 / 2.54, |
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self::UOM_MILLIMETERS => 96.0 / 25.4, |
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self::UOM_INCHES => 96.0, |
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self::UOM_PIXELS => 1.0, |
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self::UOM_POINTS => 96.0 / 72, |
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self::UOM_PICA => 96.0 * 12 / 72, |
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]; |
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|
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/** |
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* Based on a standard column width of 8.54 units in MS Excel. |
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*/ |
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const RELATIVE_UNITS = [ |
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'em' => 10.0 / 8.54, |
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'ex' => 10.0 / 8.54, |
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'ch' => 10.0 / 8.54, |
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'rem' => 10.0 / 8.54, |
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'vw' => 8.54, |
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'vh' => 8.54, |
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'vmin' => 8.54, |
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'vmax' => 8.54, |
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'%' => 8.54 / 100, |
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]; |
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|
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/** |
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* @var float|int If this is a width, then size is measured in pixels (if is set) |
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* or in Excel's default column width units if $unit is null. |
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* If this is a height, then size is measured in pixels () |
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* or in points () if $unit is null. |
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*/ |
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protected $size; |
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|
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protected ?string $unit = null; |
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|
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public function __construct(string $dimension) |
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{ |
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$size = 0.0; |
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$unit = ''; |
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$sscanf = sscanf($dimension, '%[1234567890.]%s'); |
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if (is_array($sscanf)) { |
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$size = (float) ($sscanf[0] ?? 0.0); |
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$unit = strtolower($sscanf[1] ?? ''); |
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} |
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|
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// If a UoM is specified, then convert the size to pixels for internal storage |
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if (isset(self::ABSOLUTE_UNITS[$unit])) { |
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$size *= self::ABSOLUTE_UNITS[$unit]; |
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$this->unit = self::UOM_PIXELS; |
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} elseif (isset(self::RELATIVE_UNITS[$unit])) { |
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$size *= self::RELATIVE_UNITS[$unit]; |
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$size = round($size, 4); |
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} |
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|
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$this->size = $size; |
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} |
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|
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public function width(): float |
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{ |
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return (float) ($this->unit === null) |
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? $this->size |
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: round(Drawing::pixelsToCellDimension((int) $this->size, new Font(false)), 4); |
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} |
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|
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public function height(): float |
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{ |
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return (float) ($this->unit === null) |
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? $this->size |
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: $this->toUnit(self::UOM_POINTS); |
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} |
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|
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public function toUnit(string $unitOfMeasure): float |
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{ |
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$unitOfMeasure = strtolower($unitOfMeasure); |
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if (!array_key_exists($unitOfMeasure, self::ABSOLUTE_UNITS)) { |
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throw new Exception("{$unitOfMeasure} is not a vaid unit of measure"); |
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} |
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|
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$size = $this->size; |
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if ($this->unit === null) { |
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$size = Drawing::cellDimensionToPixels($size, new Font(false)); |
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} |
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|
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return $size / self::ABSOLUTE_UNITS[$unitOfMeasure]; |
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} |
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} |
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|
