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<?php
/**
* @package OpenCart
*
* @author Daniel Kerr
* @copyright Copyright (c) 2005 - 2022, OpenCart, Ltd. (https://www.opencart.com/)
* @license https://opensource.org/licenses/GPL-3.0
*
* @see https://www.opencart.com
*/
namespace Opencart\System\Library;
/**
* Class Image
*/
class Image {
/**
* @var string
*/
private string $file;
/**
* @var mixed
*/
private $image;
/**
* @var int
*/
private int $width;
/**
* @var int
*/
private int $height;
/**
* @var string
*/
private string $bits;
/**
* @var string
*/
private string $mime;
/**
* Constructor
*
* @param string $file
*/
public function __construct(string $file) {
if (!extension_loaded('gd')) {
exit('Error: PHP GD is not installed!');
}
if (is_file($file)) {
$this->file = $file;
$info = getimagesize($file);
$this->width = $info[0];
$this->height = $info[1];
$this->bits = $info['bits'] ?? '';
$this->mime = $info['mime'] ?? '';
if ($this->mime == 'image/gif') {
$this->image = imagecreatefromgif($file);
} elseif ($this->mime == 'image/png') {
$this->image = imagecreatefrompng($file);
imageinterlace($this->image, false);
} elseif ($this->mime == 'image/jpeg') {
$this->image = imagecreatefromjpeg($file);
} elseif ($this->mime == 'image/webp') {
$this->image = imagecreatefromwebp($file);
}
} else {
throw new \Exception('Error: Could not load image ' . $file . '!');
}
}
/**
* Get File
*
* @return string
*/
public function getFile(): string {
return $this->file;
}
/**
* Get Image
*
* @return mixed
*/
public function getImage() {
return $this->image ?: null;
}
/**
* Get Width
*
* @return int
*/
public function getWidth(): int {
return $this->width;
}
/**
* Get Height
*
* @return int
*/
public function getHeight(): int {
return $this->height;
}
/**
* Get Bits
*
* @return string
*/
public function getBits(): string {
return $this->bits;
}
/**
* Get Mime
*
* @return string
*/
public function getMime(): string {
return $this->mime;
}
/**
* Save
*
* @param string $file
* @param int $quality
*
* @return void
*/
public function save(string $file, int $quality = 90): void {
$info = pathinfo($file);
$extension = strtolower($info['extension']);
if (is_object($this->image) || is_resource($this->image)) {
if ($extension == 'jpeg' || $extension == 'jpg') {
imagejpeg($this->image, $file, $quality);
} elseif ($extension == 'png') {
imagepng($this->image, $file);
} elseif ($extension == 'gif') {
imagegif($this->image, $file);
} elseif ($extension == 'webp') {
imagewebp($this->image, $file);
}
imagedestroy($this->image);
}
}
/**
* Resize
*
* @param int $width
* @param int $height
* @param string $default
*
* @return void
*/
public function resize(int $width = 0, int $height = 0, string $default = ''): void {
if (!$this->width || !$this->height) {
return;
}
$xpos = 0;
$ypos = 0;
$scale = 1;
$scale_w = $width / $this->width;
$scale_h = $height / $this->height;
if ($default == 'w') {
$scale = $scale_w;
} elseif ($default == 'h') {
$scale = $scale_h;
} else {
$scale = min($scale_w, $scale_h);
}
if ($scale == 1 && $scale_h == $scale_w && ($this->mime != 'image/png' && $this->mime != 'image/webp')) {
return;
}
$new_width = (int)($this->width * $scale);
$new_height = (int)($this->height * $scale);
$xpos = (int)(($width - $new_width) / 2);
$ypos = (int)(($height - $new_height) / 2);
$image_old = $this->image;
$this->image = imagecreatetruecolor($width, $height);
if ($this->mime == 'image/png') {
imagealphablending($this->image, false);
imagesavealpha($this->image, true);
$background = imagecolorallocatealpha($this->image, 255, 255, 255, 127);
imagecolortransparent($this->image, $background);
} elseif ($this->mime == 'image/webp') {
imagealphablending($this->image, false);
imagesavealpha($this->image, true);
$background = imagecolorallocatealpha($this->image, 255, 255, 255, 127);
imagecolortransparent($this->image, $background);
} else {
$background = imagecolorallocate($this->image, 255, 255, 255);
}
imagefilledrectangle($this->image, 0, 0, $width, $height, $background);
imagecopyresampled($this->image, $image_old, $xpos, $ypos, 0, 0, $new_width, $new_height, $this->width, $this->height);
imagedestroy($image_old);
$this->width = $width;
$this->height = $height;
}
/**
* Watermark
*
* @param self $watermark
* @param string $position
*
* @return void
*/
public function watermark(self $watermark, string $position = 'bottomright'): void {
switch ($position) {
case 'topleft':
$watermark_pos_x = 0;
$watermark_pos_y = 0;
break;
case 'topcenter':
$watermark_pos_x = (int)(($this->width - $watermark->getWidth()) / 2);
$watermark_pos_y = 0;
break;
case 'topright':
$watermark_pos_x = ($this->width - $watermark->getWidth());
$watermark_pos_y = 0;
break;
case 'middleleft':
$watermark_pos_x = 0;
$watermark_pos_y = (int)(($this->height - $watermark->getHeight()) / 2);
break;
case 'middlecenter':
$watermark_pos_x = (int)(($this->width - $watermark->getWidth()) / 2);
$watermark_pos_y = (int)(($this->height - $watermark->getHeight()) / 2);
break;
case 'middleright':
$watermark_pos_x = ($this->width - $watermark->getWidth());
$watermark_pos_y = (int)(($this->height - $watermark->getHeight()) / 2);
break;
case 'bottomleft':
$watermark_pos_x = 0;
$watermark_pos_y = ($this->height - $watermark->getHeight());
break;
case 'bottomcenter':
$watermark_pos_x = (int)(($this->width - $watermark->getWidth()) / 2);
$watermark_pos_y = ($this->height - $watermark->getHeight());
break;
case 'bottomright':
$watermark_pos_x = ($this->width - $watermark->getWidth());
$watermark_pos_y = ($this->height - $watermark->getHeight());
break;
default:
$watermark_pos_x = 0;
$watermark_pos_y = 0;
break;
}
imagealphablending($this->image, true);
imagesavealpha($this->image, true);
imagecopy($this->image, $watermark->getImage(), $watermark_pos_x, $watermark_pos_y, 0, 0, $watermark->getWidth(), $watermark->getHeight());
imagedestroy($watermark->getImage());
}
/**
* Crop
*
* @param int $top_x
* @param int $top_y
* @param int $bottom_x
* @param int $bottom_y
*
* @return void
*/
public function crop(int $top_x, int $top_y, int $bottom_x, int $bottom_y): void {
$image_old = $this->image;
$this->image = imagecreatetruecolor($bottom_x - $top_x, $bottom_y - $top_y);
imagecopy($this->image, $image_old, 0, 0, $top_x, $top_y, $this->width, $this->height);
imagedestroy($image_old);
$this->width = $bottom_x - $top_x;
$this->height = $bottom_y - $top_y;
}
/**
* Rotate
*
* @param int $degree
* @param string $color
*
* @return void
*/
public function rotate(int $degree, string $color = 'FFFFFF'): void {
$rgb = $this->html2rgb($color);
$this->image = imagerotate($this->image, $degree, imagecolorallocate($this->image, $rgb[0], $rgb[1], $rgb[2]));
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
}
/**
* Filter
*
* @return void
*/
private function filter(): void {
$args = func_get_args();
imagefilter(...$args);
}
/**
* Text
*
* @param string $text
* @param int $x
* @param int $y
* @param int $size
* @param string $color
*
* @return void
*/
private function text(string $text, int $x = 0, int $y = 0, int $size = 5, string $color = '000000'): void {
$rgb = $this->html2rgb($color);
imagestring($this->image, $size, $x, $y, $text, imagecolorallocate($this->image, $rgb[0], $rgb[1], $rgb[2]));
}
/**
* Merge
*
* @param self $merge
* @param int $x
* @param int $y
* @param int $opacity
*
* @return void
*/
private function merge(self $merge, int $x = 0, int $y = 0, int $opacity = 100): void {
imagecopymerge($this->image, $merge->getImage(), $x, $y, 0, 0, $merge->getWidth(), $merge->getHeight(), $opacity);
}
/**
* HTML2RGB
*
* @param string $color
*
* @return array<int, int>
*/
private function html2rgb(string $color): array {
if ($color[0] == '#') {
$color = substr($color, 1);
}
if (strlen($color) == 6) {
[
$r,
$g,
$b
] = [
$color[0] . $color[1],
$color[2] . $color[3],
$color[4] . $color[5]
];
} elseif (strlen($color) == 3) {
[
$r,
$g,
$b
] = [
$color[0] . $color[0],
$color[1] . $color[1],
$color[2] . $color[2]
];
} else {
return [];
}
$r = hexdec($r);
$g = hexdec($g);
$b = hexdec($b);
return [
$r,
$g,
$b
];
}
}