Image: added support for BMP

src/Utils/Image.php

@@ -115,11 +115,12 @@ class Image
 		JPEG = IMAGETYPE_JPEG,
 		PNG = IMAGETYPE_PNG,
 		GIF = IMAGETYPE_GIF,
-		WEBP = 18; // IMAGETYPE_WEBP is available as of PHP 7.1
+		WEBP = IMAGETYPE_WEBP,
+		BMP = IMAGETYPE_BMP;
 
 	public const EMPTY_GIF = "GIF89a\x01\x00\x01\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00!\xf9\x04\x01\x00\x00\x00\x00,\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02D\x01\x00;";
 
-	private const FORMATS = [self::JPEG => 'jpeg', self::PNG => 'png', self::GIF => 'gif', self::WEBP => 'webp'];
+	private const FORMATS = [self::JPEG => 'jpeg', self::PNG => 'png', self::GIF => 'gif', self::WEBP => 'webp', self::BMP => 'bmp'];
 
 	/** @var resource */
 	private $image;
@@ -569,6 +570,10 @@ private function output(int $type, ?int $quality, string $file = null): void
 				$success = @imagewebp($this->image, $file, $quality); // @ is escalated to exception
 				break;
 
+			case self::BMP:
+				$success = @imagebmp($this->image, $file); // @ is escalated to exception
+				break;
+
 			default:
 				throw new Nette\InvalidArgumentException("Unsupported image type '$type'.");
 		}

tests/Utils/Image.save.phpt

@@ -46,6 +46,21 @@ test(function () use ($main) {
 });
 
 
+test(function () use ($main) {
+	if (!function_exists('imagebmp')) {
+		return;
+	}
+
+	$main->save(getTempDir() . '/foo.bmp');
+	Assert::true(is_file(getTempDir() . '/foo.bmp'));
+	Assert::same(IMAGETYPE_BMP, getimagesize(getTempDir() . '/foo.bmp')[2]);
+
+	$main->save(getTempDir() . '/foo.y', null, Image::BMP);
+	Assert::true(is_file(getTempDir() . '/foo.y'));
+	Assert::same(IMAGETYPE_BMP, getimagesize(getTempDir() . '/foo.y')[2]);
+});
+
+
 Assert::exception(function () use ($main) { // invalid image type
 	$main->save('foo', null, IMG_WBMP);
 }, Nette\InvalidArgumentException::class, sprintf('Unsupported image type \'%d\'.', IMG_WBMP));