misuzu/src/Imaging/GdImage.php

112 lines
2.9 KiB
PHP

<?php
namespace Misuzu\Imaging;
use InvalidArgumentException;
final class GdImage extends Image {
private $gd;
private int $type;
private const CONSTRUCTORS = [
IMAGETYPE_GIF => 'imagecreatefromgif',
IMAGETYPE_JPEG => 'imagecreatefromjpeg',
IMAGETYPE_PNG => 'imagecreatefrompng',
IMAGETYPE_BMP => 'imagecreatefrombmp',
IMAGETYPE_WBMP => 'imagecreatefromwbmp',
IMAGETYPE_WEBP => 'imagecreatefromwebp',
];
private const SAVERS = [
IMAGETYPE_GIF => 'imagegif',
IMAGETYPE_JPEG => 'imagejpeg',
IMAGETYPE_PNG => 'imagepng',
IMAGETYPE_BMP => 'imagebmp',
IMAGETYPE_WBMP => 'imagewbmp',
IMAGETYPE_WEBP => 'imagewebp',
];
public function __construct($pathOrWidth, int $height = -1) {
parent::__construct($pathOrWidth);
if(is_int($pathOrWidth)) {
$this->gd = imagecreatetruecolor($pathOrWidth, $height < 1 ? $pathOrWidth : $height);
$this->type = IMAGETYPE_PNG;
} elseif(is_string($pathOrWidth)) {
$imageInfo = getimagesize($pathOrWidth);
if($imageInfo !== false) {
$this->type = $imageInfo[2];
if(isset(self::CONSTRUCTORS[$this->type]))
$this->gd = self::CONSTRUCTORS[$this->type]($pathOrWidth);
}
}
if(!isset($this->gd)) {
throw new InvalidArgumentException('Unsupported image format.');
}
}
public function __destruct() {
if(isset($this->gd))
$this->destroy();
}
public function getWidth(): int {
return imagesx($this->gd);
}
public function getHeight(): int {
return imagesy($this->gd);
}
public function hasFrames(): bool {
return false;
}
public function next(): bool {
return false;
}
public function resize(int $width, int $height): bool {
$resized = imagescale($this->gd, $width, $height, IMG_BICUBIC_FIXED);
if($resized === false)
return false;
imagedestroy($this->gd);
$this->gd = $resized;
return true;
}
public function crop(int $width, int $height, int $x, int $y): bool {
$cropped = imagecrop($this->gd, compact('width', 'height', 'x', 'y'));
if($cropped === false)
return false;
imagedestroy($this->gd);
$this->gd = $cropped;
return true;
}
public function setPage(int $width, int $height, int $x, int $y): bool {
return false;
}
public function save(string $path): bool {
if(isset(self::SAVERS[$this->type]))
return self::SAVERS[$this->type]($this->gd, $path);
return false;
}
public function destroy(): void {
if(imagedestroy($this->gd)) {
$this->gd = null;
$this->type = 0;
}
}
}