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<?php |
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namespace Imagecow\Utils; |
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use Imagecow\ImageException; |
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/** |
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* Usefull dimmensions calculations. |
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*/ |
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class Dimmensions |
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{ |
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protected static $positionsKeywords = [ |
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'top' => '0%', |
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'left' => '0%', |
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'middle' => '50%', |
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'center' => '50%', |
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'right' => '100%', |
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'bottom' => '100%', |
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]; |
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/** |
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* Calculate the dimensions of a resize. |
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* |
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* @param int $oldWidth |
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* @param int $oldHeight |
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* @param int $newWidth |
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* @param int $newHeight |
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* @param bool $cover |
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* |
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* @return array [width, height] |
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*/ |
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public static function getResizeDimmensions($oldWidth, $oldHeight, $newWidth, $newHeight, $cover = false) |
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{ |
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View Code Duplication |
if (empty($newHeight)) { |
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return [(int) $newWidth, (int) ceil(($newWidth / $oldWidth) * $oldHeight)]; |
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} |
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View Code Duplication |
if (empty($newWidth)) { |
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return [(int) ceil(($newHeight / $oldHeight) * $oldWidth), (int) $newHeight]; |
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} |
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$scaleWidth = $newWidth / $oldWidth; |
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$scaleHeight = $newHeight / $oldHeight; |
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if ($cover) { |
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View Code Duplication |
if ($scaleWidth > $scaleHeight) { |
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return [(int) $newWidth, (int) ceil($scaleWidth * $oldHeight)]; |
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} |
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View Code Duplication |
if ($scaleWidth < $scaleHeight) { |
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return [(int) ceil($scaleHeight * $oldWidth), (int) $newHeight]; |
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} |
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} else { |
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View Code Duplication |
if ($scaleWidth < $scaleHeight) { |
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return [(int) $newWidth, (int) ceil($scaleWidth * $oldHeight)]; |
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} |
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View Code Duplication |
if ($scaleWidth > $scaleHeight) { |
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return [(int) ceil($scaleHeight * $oldWidth), (int) $newHeight]; |
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} |
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} |
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View Code Duplication |
if ($scaleWidth < $scaleHeight || ($cover && $scaleWidth > $scaleHeight)) { |
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return [(int) $newWidth, (int) ceil($scaleWidth * $oldHeight)]; |
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} |
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View Code Duplication |
if ($scaleWidth > $scaleHeight || ($cover && $scaleWidth < $scaleHeight)) { |
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return [(int) ceil($scaleHeight * $oldWidth), (int) $newHeight]; |
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} |
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return [(int) $newWidth, (int) $newHeight]; |
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} |
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/** |
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* Calculate a dimension value. |
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* |
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* @param int|string $value |
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* @param int $relatedValue |
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* @param bool $position |
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* |
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* @return int |
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*/ |
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public static function getIntegerValue($value, $relatedValue, $position = false) |
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{ |
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if ($position && isset(static::$positionsKeywords[$value])) { |
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$value = static::$positionsKeywords[$value]; |
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} |
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if (substr($value, -1) === '%') { |
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return intval(($relatedValue / 100) * floatval(substr($value, 0, -1))); |
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} |
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return intval($value); |
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} |
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/** |
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* Calculate a dimension value. |
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* |
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* @param int|string $value |
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* @param int $relatedValue |
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* @param bool $position |
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* |
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* @return string |
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*/ |
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public static function getPercentageValue($value, $relatedValue, $position = false) |
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{ |
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if ($position && isset(static::$positionsKeywords[$value])) { |
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return static::$positionsKeywords[$value]; |
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} |
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if (substr($value, -1) === '%') { |
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return $value; |
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} |
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if (is_numeric($value)) { |
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return empty($value) ? '0%' : (($value / $relatedValue) * 100).'%'; |
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} |
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throw new ImageException("Invalid position: {$value}"); |
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} |
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/** |
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* Calculates the x/y position. |
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* |
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* @param string|int|null $position |
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* @param int $newValue |
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* @param int $oldValue |
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* |
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* @return int |
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*/ |
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public static function getPositionValue($position, $newValue, $oldValue) |
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{ |
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if (is_numeric($position)) { |
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return intval($position); |
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} |
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$newCenter = static::getIntegerValue($position, $newValue, true); |
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$oldCenter = static::getIntegerValue($position, $oldValue, true); |
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return $oldCenter - $newCenter; |
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} |
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/** |
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* Calculates the x/y position. |
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* |
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* @param string|int|null $position |
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* @param int $original |
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* @param int $reference |
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* @param int $padding |
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* |
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* @return int |
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*/ |
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public static function getPositionFromReferenceValue($position, $original, $reference, $padding = 0) |
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{ |
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if (is_numeric($position)) { |
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$value = intval($position); |
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} else { |
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$value = static::getIntegerValue($position, $original, true); |
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} |
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$padding = static::getIntegerValue($padding, $original, true); |
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if (($position === 'top') || ($position === 'left')) { |
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$value = $padding; |
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} elseif (($position === 'bottom') || ($position === 'right')) { |
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$value -= $reference + $padding; |
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} elseif (($position === 'middle') || ($position === 'center')) { |
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$value = ($original / 2) - ($reference / 2); |
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} |
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return $value; |
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} |
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} |
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oscarotero /
imagecow
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.