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<?php declare(strict_types=1);
/**
* Hummingbird Anime List Client
*
* An API client for Kitsu to manage anime and manga watch lists
*
* PHP version 8
*
* @package HummingbirdAnimeClient
* @author Timothy J. Warren <tim@timshomepage.net>
* @copyright 2015 - 2021 Timothy J. Warren
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @version 5.2
* @link https://git.timshomepage.net/timw4mail/HummingBirdAnimeClient
*/
namespace Aviat\Ion\Exception;
use RuntimeException;
/**
* Exception for bad configuration
*/
class ImageCreationException extends RuntimeException {
}

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src/Ion/ImageBuilder.php Normal file
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<?php declare(strict_types=1);
/**
* Hummingbird Anime List Client
*
* An API client for Kitsu to manage anime and manga watch lists
*
* PHP version 8
*
* @package HummingbirdAnimeClient
* @author Timothy J. Warren <tim@timshomepage.net>
* @copyright 2015 - 2021 Timothy J. Warren
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @version 5.2
* @link https://git.timshomepage.net/timw4mail/HummingBirdAnimeClient
*/
namespace Aviat\Ion;
use GdImage;
use Aviat\Ion\Exception\ImageCreationException;
/**
* A wrapper around GD functions to create images
*
* @property GdImage|false|null $img
*/
class ImageBuilder {
private GDImage|false|null $_img;
private int $fontSize = 10;
private function __construct(private int $width=200, private int $height=200 )
{
$this->_img = imagecreatetruecolor($this->width, $this->height);
}
public function __destruct()
{
$this->cleanup();
}
private function getImg(): GdImage
{
if ($this->_img instanceof GdImage)
{
return $this->_img;
}
throw new ImageCreationException('Invalid GD object');
}
public static function new(int $width=200, int $height=200): self
{
$i = new self($width, $height);
if ($i->_img === FALSE)
{
throw new ImageCreationException('Could not create image object');
}
return $i;
}
public function setFontSize(int $size): self
{
$this->fontSize = $size;
return $this;
}
public function enableAlphaBlending(bool $enable): self
{
$ab = imagealphablending($this->getImg(), $enable);
if ( ! $ab)
{
throw new ImageCreationException('Failed to toggle image alpha blending');
}
return $this;
}
public function addCenteredText(string $text, int $red, int $green, int $blue, int $alpha=-1): self
{
// Create the font color
$textColor = ($alpha > -1)
? imagecolorallocatealpha($this->getImg(), $red, $green, $blue, $alpha)
: imagecolorallocate($this->getImg(), $red, $green, $blue);
if ($textColor === FALSE)
{
throw new ImageCreationException('Could not create image text color');
}
// Generate placeholder text
$fontWidth = imagefontwidth($this->fontSize);
$fontHeight = imagefontheight($this->fontSize);
$length = strlen($text);
$textWidth = $length * $fontWidth;
$fxPos = (int) ceil((imagesx($this->getImg()) - $textWidth) / 2);
$fyPos = (int) ceil((imagesy($this->getImg()) - $fontHeight) / 2);
// Add the image text
imagestring($this->getImg(), $this->fontSize, $fxPos, $fyPos, $text, $textColor);
return $this;
}
public function addBackgroundColor(int $red, int $green, int $blue, int $alpha=-1): self
{
$fillColor = ($alpha > -1)
? imagecolorallocatealpha($this->getImg(), $red, $green, $blue, $alpha)
: imagecolorallocate($this->getImg(), $red, $green, $blue);
if ($fillColor === FALSE)
{
throw new ImageCreationException('Failed to create image fill color');
}
$hasFilled = imagefill($this->getImg(), 0, 0, $fillColor);
if ($hasFilled === FALSE)
{
throw new ImageCreationException('Failed to add background color to image');
}
return $this;
}
public function savePng(string $savePath, bool $saveAlpha = TRUE): bool
{
$setAlpha = imagesavealpha($this->getImg(), $saveAlpha);
if ($setAlpha === FALSE)
{
throw new ImageCreationException('Failed to set image save alpha flag');
}
return imagepng($this->getImg(), $savePath, 9);
}
public function saveWebp(string $savePath): bool
{
return imagewebp($this->getImg(), $savePath);
}
public function saveJpg(string $savePath): bool
{
return imagejpeg($this->getImg(), $savePath);
}
public function saveGif(string $savePath): bool
{
return imagegif($this->getImg(), $savePath);
}
public function cleanup(): void
{
$cleaned = FALSE;
if ($this->getImg() instanceof GdImage)
{
$cleaned = imagedestroy($this->getImg());
}
if ($cleaned === FALSE)
{
throw new ImageCreationException('Failed to clean up image resource');
}
}
}