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<?php |
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namespace OneSheet\Size; |
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use OneSheet\Style\Font; |
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/** |
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* Class SizeCalculator to calculate the approximate width |
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* and height of cells based on the font and content. |
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* |
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* @package OneSheet\Size |
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*/ |
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class SizeCalculator |
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{ |
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/** |
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* @var SizeCollection |
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*/ |
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private $sizeCollection; |
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/** |
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* @var array |
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*/ |
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private $characterSizes; |
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/** |
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* SizeCalculator constructor. |
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* |
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* @param SizeCollection $sizeCollection |
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*/ |
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public function __construct(SizeCollection $sizeCollection) |
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{ |
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$this->sizeCollection = $sizeCollection; |
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} |
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/** |
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* Return the estimated width of a cell value. |
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* |
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* @param mixed $value |
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* @param Font $font |
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* @return float |
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*/ |
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public function getCellWidth($value, Font $font) |
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{ |
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$width = 0.3 + (0.05 * $font->getSize()); |
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foreach ($this->getSingleCharacterArray($value) as $character) { |
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if (isset($this->characterSizes[$character])) { |
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$width += $this->characterSizes[$character]; |
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} elseif (strlen($character)) { |
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$width += 0.06 * $font->getSize(); |
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} |
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} |
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return $font->isBold() ? $width * $this->characterSizes['bold'] : $width; |
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} |
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/** |
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* Return the font height, but no smaller than 14pt. |
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* |
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* @return number |
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*/ |
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public function getRowHeight() |
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{ |
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if (14 > $this->characterSizes['height']) { |
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return 14; |
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} |
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return floor($this->characterSizes['height']); |
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} |
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/** |
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* Set proper font sizes by font. |
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* |
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* @param Font $font |
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*/ |
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public function setFont(Font $font) |
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{ |
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$this->characterSizes = $this->sizeCollection->get($font->getName(), $font->getSize()); |
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} |
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/** |
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* Split value into individual characters. |
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* |
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* @param mixed $value |
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* @return array |
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*/ |
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private function getSingleCharacterArray($value) |
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{ |
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if (mb_strlen($value) == strlen($value)) { |
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return str_split($value); |
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} |
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return preg_split('~~u', $value, -1, PREG_SPLIT_NO_EMPTY); |
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} |
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} |
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