Create a blank image.
|
public static createBlank ( integer $width = 1, integer $height = 1 ) : |
||
| $width | integer | Width in pixels. |
| $height | integer | Height in pixels. |
| return | ||
/**
* Resize helper function.
*
* @param Image $image
* @param int $newWidth
* @param int $newHeight
* @param int $targetX
* @param int $targetY
* @param int $srcX
* @param int $srcY
*
*/
private function _resize(&$image, $newWidth, $newHeight, $targetX = 0, $targetY = 0, $srcX = 0, $srcY = 0)
{
// $this->_imageCheck();
if ($image->isAnimated()) {
// Animated GIF
$gift = new GifHelper();
$blocks = $gift->resize($image->getBlocks(), $newWidth, $newHeight);
// Resize image instance
$image = new Image($image->getCore(), $image->getImageFile(), $newWidth, $newHeight, $image->getType(), $blocks, true);
} else {
// Create blank image
$newImage = Image::createBlank($newWidth, $newHeight);
if (ImageType::PNG === $image->getType()) {
// Preserve PNG transparency
$newImage->fullAlphaMode(true);
}
imagecopyresampled($newImage->getCore(), $image->getCore(), $targetX, $targetY, $srcX, $srcY, $newWidth, $newHeight, $image->getWidth(), $image->getHeight());
// Free memory of old resource
imagedestroy($image->getCore());
// Resize image instance
$image = new Image($newImage->getCore(), $image->getImageFile(), $newWidth, $newHeight, $image->getType());
}
}
/**
* Create a blank image.
*
* @param int $width Width of image in pixels.
* @param int $height Height of image in pixels.
*
* @return ImageInterface
* @throws \Exception
*/
public static function createBlankImage($width = 1, $height = 1)
{
$editorName = self::detectAvailableEditor();
if ('Imagick' === $editorName) {
return ImagickImage::createBlank($width, $height);
} else {
return GdImage::createBlank($width, $height);
}
}
