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<?php |
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/** |
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* File containing the {@see Mistralys\WidthsCalculator\Calculator\SurplusRemover} class. |
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* |
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* @package WidthsCalculator |
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* @see Mistralys\WidthsCalculator\Calculator\SurplusRemover |
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*/ |
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declare (strict_types=1); |
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namespace Mistralys\WidthsCalculator\Calculator; |
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use Mistralys\WidthsCalculator\Calculator; |
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/** |
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* Handles subtracting values above the maximum total. |
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* This can happen when there are missing values combined |
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* with a minimum column width. |
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* |
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* @package WidthsCalculator |
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* @author Sebastian Mordziol <[email protected]> |
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*/ |
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class SurplusRemover |
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{ |
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/** |
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* @var Calculator |
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*/ |
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private $calculator; |
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/** |
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* @var Operations |
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*/ |
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private $operations; |
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/** |
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* @var float |
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*/ |
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private $leftover = 0; |
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/** |
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* @var float |
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*/ |
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private $baseTotal = 0; |
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public function __construct(Calculator $calculator) |
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{ |
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$this->calculator = $calculator; |
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$this->operations = $calculator->getOperations(); |
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} |
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public function remove() : void |
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{ |
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$this->leftover = $this->calculator->getMaxTotal() - $this->operations->calcTotal(); |
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if($this->leftover >= 0) |
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{ |
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return; |
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} |
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$this->leftover = $this->leftover * -1; // we want a positive number |
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$this->baseTotal = $this->operations->calcTotalNotMissing(); |
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$cols = $this->calculator->getColumns(); |
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foreach($cols as $col) |
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{ |
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if(!$this->processColumn($col)) |
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{ |
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break; |
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} |
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} |
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// There is some surplus left after the operation: |
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// this means there were columns from which the |
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// surplus could not be removed because of the min |
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// column width. |
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// |
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// We simply run the removal again, to remove the |
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// surplus from the columns it can be removed from. |
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if($this->leftover > 0) |
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{ |
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$this->remove(); |
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} |
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} |
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private function processColumn(Column $col) : bool |
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{ |
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if($col->isMissing()) |
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{ |
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return true; |
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} |
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if($this->leftover <= 0) |
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{ |
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return false; |
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} |
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$percent = $col->getValue() * 100 / $this->baseTotal; |
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$amount = round($this->leftover * $percent / 100); |
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$val = $col->getValue() - $amount; |
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if($val < $this->calculator->getMinWidth()) |
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{ |
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return true; |
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} |
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$this->leftover -= $amount; |
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$col->setValue($val); |
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return true; |
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} |
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} |
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Mistralys /
column-widths-calculator
