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<?php
namespace PHPImageWorkshop;
use PHPImageWorkshop\Core\ImageWorkshopLayer as ImageWorkshopLayer;
use PHPImageWorkshop\Core\ImageWorkshopLib as ImageWorkshopLib;
use PHPImageWorkshop\Exception\ImageWorkshopException as ImageWorkshopException;
// If no autoloader, uncomment these lines:
//require_once(__DIR__.'/Core/ImageWorkshopLayer.php');
//require_once(__DIR__.'/Exception/ImageWorkshopException.php');
/**
* ImageWorkshop class
*
* Use this class as a factory to initialize ImageWorkshop layers
*
* @link http://phpimageworkshop.com
* @author Sybio (Clément Guillemain / @Sybio01)
* @license http://en.wikipedia.org/wiki/MIT_License
* @copyright Clément Guillemain
*/
class ImageWorkshop
{
/**
* @var integer
*/
const ERROR_NOT_AN_IMAGE_FILE = 1;
/**
* @var integer
*/
const ERROR_IMAGE_NOT_FOUND = 2;
/**
* @var integer
*/
const ERROR_NOT_READABLE_FILE = 3;
/**
* @var integer
*/
const ERROR_CREATE_IMAGE_FROM_STRING = 4;
/**
* Initialize a layer from a given image path
*
* From an upload form, you can give the "tmp_name" path
*
* @param string $path
* @param bool $fixOrientation
*
* @return ImageWorkshopLayer
*/
public static function initFromPath($path, $fixOrientation = false)
{
if (false === filter_var($path, FILTER_VALIDATE_URL) && !file_exists($path)) {
throw new ImageWorkshopException(sprintf('File "%s" not exists.', $path), static::ERROR_IMAGE_NOT_FOUND);
}
if (false === ($imageSizeInfos = @getImageSize($path))) {
throw new ImageWorkshopException('Can\'t open the file at "'.$path.'" : file is not readable, did you check permissions (755 / 777) ?', static::ERROR_NOT_READABLE_FILE);
}
$mimeContentType = explode('/', $imageSizeInfos['mime']);
if (!$mimeContentType || !isset($mimeContentType[1])) {
throw new ImageWorkshopException('Not an image file (jpeg/png/gif) at "'.$path.'"', static::ERROR_NOT_AN_IMAGE_FILE);
}
$mimeContentType = $mimeContentType[1];
$exif = array();
switch ($mimeContentType) {
case 'jpeg':
$image = imageCreateFromJPEG($path);
if (function_exists('read_exif_data') && false !== ($data = @read_exif_data($path))) {
$exif = $data;
}
break;
case 'gif':
$image = imageCreateFromGIF($path);
break;
case 'png':
$image = imageCreateFromPNG($path);
break;
default:
throw new ImageWorkshopException('Not an image file (jpeg/png/gif) at "'.$path.'"', static::ERROR_NOT_AN_IMAGE_FILE);
break;
}
if (false === $image) {
throw new ImageWorkshopException('Unable to create image with file found at "'.$path.'"');
}
$layer = new ImageWorkshopLayer($image, $exif);
if ($fixOrientation) {
$layer->fixOrientation();
}
return $layer;
}
/**
* Initialize a text layer
*
* @param string $text
* @param string $fontPath
* @param integer $fontSize
* @param string $fontColor
* @param integer $textRotation
* @param integer $backgroundColor
*
* @return ImageWorkshopLayer
*/
public static function initTextLayer($text, $fontPath, $fontSize = 13, $fontColor = 'ffffff', $textRotation = 0, $backgroundColor = null)
{
$textDimensions = ImageWorkshopLib::getTextBoxDimension($fontSize, $textRotation, $fontPath, $text);
$layer = static::initVirginLayer($textDimensions['width'], $textDimensions['height'], $backgroundColor);
$layer->write($text, $fontPath, $fontSize, $fontColor, $textDimensions['left'], $textDimensions['top'], $textRotation);
return $layer;
}
/**
* Initialize a new virgin layer
*
* @param integer $width
* @param integer $height
* @param string $backgroundColor
*
* @return ImageWorkshopLayer
*/
public static function initVirginLayer($width = 100, $height = 100, $backgroundColor = null)
{
$opacity = 0;
if (null === $backgroundColor || $backgroundColor == 'transparent') {
$opacity = 127;
$backgroundColor = 'ffffff';
}
return new ImageWorkshopLayer(ImageWorkshopLib::generateImage($width, $height, $backgroundColor, $opacity));
}
/**
* Initialize a layer from a resource image var
*
* @param \resource $image
*
* @return ImageWorkshopLayer
*/
public static function initFromResourceVar($image)
{
return new ImageWorkshopLayer($image);
}
/**
* Initialize a layer from a string (obtains with file_get_contents, cURL...)
*
* This not recommanded to initialize JPEG string with this method, GD displays bugs !
*
* @param string $imageString
*
* @return ImageWorkshopLayer
*/
public static function initFromString($imageString)
{
if (!$image = @imageCreateFromString($imageString)) {
throw new ImageWorkshopException('Can\'t generate an image from the given string.', static::ERROR_CREATE_IMAGE_FROM_STRING);
}
return new ImageWorkshopLayer($image);
}
}
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