1 | <?php |
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15 | class TransferFunctionInfo |
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16 | { |
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17 | /** |
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18 | * Preserve transfer functions (pass into the PDF file) |
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19 | */ |
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20 | const PRESERVE = 'Preserve'; |
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21 | |||
22 | /** |
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23 | * Ignore transfer functions (do not pass into the PDF file) |
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24 | */ |
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25 | const REMOVE = 'Remove'; |
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26 | |||
27 | /** |
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28 | * Apply transfer functions to color values |
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29 | */ |
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30 | const APPLY = 'Apply'; |
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31 | |||
32 | /** |
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33 | * Available transfer function info values |
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34 | * |
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35 | * @var string[] |
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36 | */ |
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37 | private static $values = [ |
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38 | self::PRESERVE, |
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39 | self::REMOVE, |
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40 | self::APPLY |
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41 | ]; |
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42 | |||
43 | /** |
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44 | * Get available transfer function info values |
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45 | * |
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46 | * @return string[] |
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47 | */ |
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48 | 2 | public static function values() |
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52 | } |
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53 |