Файл: vendor/intervention/gif/src/Blocks/ColorTable.php
Строк: 89
<?php
declare(strict_types=1);
namespace InterventionGifBlocks;
use InterventionGifAbstractEntity;
class ColorTable extends AbstractEntity
{
/**
* Create new instance
*
* @param array<Color> $colors
* @return void
*/
public function __construct(protected array $colors = [])
{
//
}
/**
* Return array of current colors
*
* @return array<Color>
*/
public function getColors(): array
{
return array_values($this->colors);
}
/**
* Add color to table
*
* @param int $r
* @param int $g
* @param int $b
* @return self
*/
public function addRgb(int $r, int $g, int $b): self
{
$this->addColor(new Color($r, $g, $b));
return $this;
}
/**
* Add color to table
*
* @param Color $color
* @return self
*/
public function addColor(Color $color): self
{
$this->colors[] = $color;
return $this;
}
/**
* Reset colors to array of color objects
*
* @param array<Color> $colors
* @return self
*/
public function setColors(array $colors): self
{
$this->empty();
foreach ($colors as $color) {
$this->addColor($color);
}
return $this;
}
/**
* Count colors of current instance
*
* @return int
*/
public function countColors(): int
{
return count($this->colors);
}
/**
* Determine if any colors are present on the current table
*
* @return bool
*/
public function hasColors(): bool
{
return $this->countColors() >= 1;
}
/**
* Empty color table
*
* @return self
*/
public function empty(): self
{
$this->colors = [];
return $this;
}
/**
* Get size of color table in logical screen descriptor
*
* @return int
*/
public function getLogicalSize(): int
{
return match ($this->countColors()) {
4 => 1,
8 => 2,
16 => 3,
32 => 4,
64 => 5,
128 => 6,
256 => 7,
default => 0,
};
}
/**
* Calculate the number of bytes contained by the current table
*
* @return int
*/
public function getByteSize(): int
{
if (!$this->hasColors()) {
return 0;
}
return 3 * pow(2, $this->getLogicalSize() + 1);
}
}