<?php
namespace PhpOffice\PhpSpreadsheet\Worksheet;
use GdImage;
use PhpOffice\PhpSpreadsheet\Exception;
use PhpOffice\PhpSpreadsheet\Shared\File;
class MemoryDrawing extends BaseDrawing
{
// Rendering functions
const RENDERING_DEFAULT = 'imagepng';
const RENDERING_PNG = 'imagepng';
const RENDERING_GIF = 'imagegif';
const RENDERING_JPEG = 'imagejpeg';
// MIME types
const MIMETYPE_DEFAULT = 'image/png';
const MIMETYPE_PNG = 'image/png';
const MIMETYPE_GIF = 'image/gif';
const MIMETYPE_JPEG = 'image/jpeg';
const SUPPORTED_MIME_TYPES = [
self::MIMETYPE_GIF,
self::MIMETYPE_JPEG,
self::MIMETYPE_PNG,
];
/**
* Image resource.
*
* @var null|GdImage|resource
*/
private $imageResource;
/**
* Rendering function.
*
* @var string
*/
private $renderingFunction;
/**
* Mime type.
*
* @var string
*/
private $mimeType;
/**
* Unique name.
*
* @var string
*/
private $uniqueName;
/** @var null|resource */
private $alwaysNull;
/**
* Create a new MemoryDrawing.
*/
public function __construct()
{
// Initialise values
$this->renderingFunction = self::RENDERING_DEFAULT;
$this->mimeType = self::MIMETYPE_DEFAULT;
$this->uniqueName = md5(mt_rand(0, 9999) . time() . mt_rand(0, 9999));
$this->alwaysNull = null;
// Initialize parent
parent::__construct();
}
public function __destruct()
{
if ($this->imageResource) {
$rslt = @imagedestroy($this->imageResource);
// "Fix" for Scrutinizer
$this->imageResource = $rslt ? null : $this->alwaysNull;
}
}
public function __clone()
{
parent::__clone();
$this->cloneResource();
}
private function cloneResource(): void
{
if (!$this->imageResource) {
return;
}
$width = (int) imagesx($this->imageResource);
$height = (int) imagesy($this->imageResource);
if (imageistruecolor($this->imageResource)) {
$clone = imagecreatetruecolor($width, $height);
if (!$clone) {
throw new Exception('Could not clone image resource');
}
imagealphablending($clone, false);
imagesavealpha($clone, true);
} else {
$clone = imagecreate($width, $height);
if (!$clone) {
throw new Exception('Could not clone image resource');
}
// If the image has transparency...
$transparent = imagecolortransparent($this->imageResource);
if ($transparent >= 0) {
$rgb = imagecolorsforindex($this->imageResource, $transparent);
if (empty($rgb)) {
throw new Exception('Could not get image colors');
}
imagesavealpha($clone, true);
$color = imagecolorallocatealpha($clone, $rgb['red'], $rgb['green'], $rgb['blue'], $rgb['alpha']);
if ($color === false) {
throw new Exception('Could not get image alpha color');
}
imagefill($clone, 0, 0, $color);
}
}
//Create the Clone!!
imagecopy($clone, $this->imageResource, 0, 0, 0, 0, $width, $height);
$this->imageResource = $clone;
}
/**
* @param resource $imageStream Stream data to be converted to a Memory Drawing
*
* @throws Exception
*/
public static function fromStream($imageStream): self
{
$streamValue = stream_get_contents($imageStream);
if ($streamValue === false) {
throw new Exception('Unable to read data from stream');
}
return self::fromString($streamValue);
}
/**
* @param string $imageString String data to be converted to a Memory Drawing
*
* @throws Exception
*/
public static function fromString(string $imageString): self
{
$gdImage = @imagecreatefromstring($imageString);
if ($gdImage === false) {
throw new Exception('Value cannot be converted to an image');
}
$mimeType = self::identifyMimeType($imageString);
$renderingFunction = self::identifyRenderingFunction($mimeType);
$drawing = new self();
$drawing->setImageResource($gdImage);
$drawing->setRenderingFunction($renderingFunction);
$drawing->setMimeType($mimeType);
return $drawing;
}
private static function identifyRenderingFunction(string $mimeType): string
{
switch ($mimeType) {
case self::MIMETYPE_PNG:
return self::RENDERING_PNG;
case self::MIMETYPE_JPEG:
return self::RENDERING_JPEG;
case self::MIMETYPE_GIF:
return self::RENDERING_GIF;
}
return self::RENDERING_DEFAULT;
}
/**
* @throws Exception
*/
private static function identifyMimeType(string $imageString): string
{
$temporaryFileName = File::temporaryFilename();
file_put_contents($temporaryFileName, $imageString);
$mimeType = self::identifyMimeTypeUsingExif($temporaryFileName);
if ($mimeType !== null) {
unlink($temporaryFileName);
return $mimeType;
}
$mimeType = self::identifyMimeTypeUsingGd($temporaryFileName);
if ($mimeType !== null) {
unlink($temporaryFileName);
return $mimeType;
}
unlink($temporaryFileName);
return self::MIMETYPE_DEFAULT;
}
private static function identifyMimeTypeUsingExif(string $temporaryFileName): ?string
{
if (function_exists('exif_imagetype')) {
$imageType = @exif_imagetype($temporaryFileName);
$mimeType = ($imageType) ? image_type_to_mime_type($imageType) : null;
return self::supportedMimeTypes($mimeType);
}
return null;
}
private static function identifyMimeTypeUsingGd(string $temporaryFileName): ?string
{
if (function_exists('getimagesize')) {
$imageSize = @getimagesize($temporaryFileName);
if (is_array($imageSize)) {
$mimeType = $imageSize['mime'] ?? null;
return self::supportedMimeTypes($mimeType);
}
}
return null;
}
private static function supportedMimeTypes(?string $mimeType = null): ?string
{
if (in_array($mimeType, self::SUPPORTED_MIME_TYPES, true)) {
return $mimeType;
}
return null;
}
/**
* Get image resource.
*
* @return null|GdImage|resource
*/
public function getImageResource()
{
return $this->imageResource;
}
/**
* Set image resource.
*
* @param GdImage|resource $value
*
* @return $this
*/
public function setImageResource($value)
{
$this->imageResource = $value;
if ($this->imageResource !== null) {
// Get width/height
$this->width = (int) imagesx($this->imageResource);
$this->height = (int) imagesy($this->imageResource);
}
return $this;
}
/**
* Get rendering function.
*
* @return string
*/
public function getRenderingFunction()
{
return $this->renderingFunction;
}
/**
* Set rendering function.
*
* @param string $value see self::RENDERING_*
*
* @return $this
*/
public function setRenderingFunction($value)
{
$this->renderingFunction = $value;
return $this;
}
/**
* Get mime type.
*
* @return string
*/
public function getMimeType()
{
return $this->mimeType;
}
/**
* Set mime type.
*
* @param string $value see self::MIMETYPE_*
*
* @return $this
*/
public function setMimeType($value)
{
$this->mimeType = $value;
return $this;
}
/**
* Get indexed filename (using image index).
*/
public function getIndexedFilename(): string
{
$extension = strtolower($this->getMimeType());
$extension = explode('/', $extension);
$extension = $extension[1];
return $this->uniqueName . $this->getImageIndex() . '.' . $extension;
}
/**
* Get hash code.
*
* @return string Hash code
*/
public function getHashCode()
{
return md5(
$this->renderingFunction .
$this->mimeType .
$this->uniqueName .
parent::getHashCode() .
__CLASS__
);
}
}
At NFC Pay, we strive to provide a seamless and satisfactory experience with our services. This Refund Policy outlines the circumstances under which refunds may be issued for transactions made through our platform. Please read this policy carefully to understand your rights regarding refunds.
1. Eligibility for Refunds
Refunds may be considered under the following circumstances:
2. Non-Refundable Situations
Refunds will generally not be issued in the following situations:
3. Refund Process
To request a refund, please follow these steps:
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Certain transactions may be subject to specific terms and conditions, including non-refundable fees or charges. Please review the terms associated with each transaction carefully, as some fees may not be eligible for refunds.
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By using NFC Pay, you agree to this Refund Policy and understand the terms under which refunds may be issued. Our goal is to ensure a fair and transparent refund process, providing you with confidence and peace of mind when using our services.