56 lines
2.1 KiB
PHP
56 lines
2.1 KiB
PHP
<?php
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namespace Misuzu\Imaging;
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use InvalidArgumentException;
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use UnexpectedValueException;
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abstract class Image {
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public function __construct($pathOrWidth) {
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if(!is_int($pathOrWidth) && !is_string($pathOrWidth))
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throw new InvalidArgumentException('The first argument must be or type string to open an image file, or int to set a width for a new image.');
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}
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public static function create($pathOrWidth, int $height = -1): Image {
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if(extension_loaded('imagick'))
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return new ImagickImage($pathOrWidth, $height);
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if(extension_loaded('gd'))
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return new GdImage($pathOrWidth, $height);
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throw new UnexpectedValueException('No image manipulation extensions are available.');
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}
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abstract public function getWidth(): int;
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abstract public function getHeight(): int;
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abstract public function hasFrames(): bool;
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abstract public function next(): bool;
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abstract public function resize(int $width, int $height): bool;
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abstract public function crop(int $width, int $height, int $x, int $y): bool;
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abstract public function setPage(int $width, int $height, int $x, int $y): bool;
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abstract public function save(string $path): bool;
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abstract public function destroy(): void;
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public function squareCrop(int $dimensions): void {
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$originalWidth = $this->getWidth();
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$originalHeight = $this->getHeight();
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if($originalWidth > $originalHeight) {
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$targetWidth = $originalWidth * $dimensions / $originalHeight;
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$targetHeight = $dimensions;
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} else {
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$targetWidth = $dimensions;
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$targetHeight = $originalHeight * $dimensions / $originalWidth;
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}
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$targetWidth = (int)$targetWidth;
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$targetHeight = (int)$targetHeight;
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do {
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$this->resize($targetWidth, $targetHeight);
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$this->crop(
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$dimensions, $dimensions,
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(int)ceil(($targetWidth - $dimensions) / 2),
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(int)ceil(($targetHeight - $dimensions) / 2)
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);
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$this->setPage($dimensions, $dimensions, 0, 0);
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} while($this->next());
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}
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}
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