Add doc block documentation

src/Colors/Cmyk/Color.php

@@ -17,6 +17,15 @@ use Intervention\Image\Interfaces\ColorspaceInterface;
 
 class Color extends AbstractColor
 {
+    /**
+     * Create new instance
+     *
+     * @param int $c
+     * @param int $m
+     * @param int $y
+     * @param int $k
+     * @return void
+     */
     public function __construct(int $c, int $m, int $y, int $k)
     {
         /** @throws void */
@@ -28,6 +37,11 @@ class Color extends AbstractColor
         ];
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorInterface::create()
+     */
     public static function create(mixed $input): ColorInterface
     {
         return (new class ([
@@ -37,40 +51,75 @@ class Color extends AbstractColor
         })->handle($input);
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorInterface::colorspace()
+     */
     public function colorspace(): ColorspaceInterface
     {
         return new Colorspace();
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorInterface::toHex()
+     */
     public function toHex(string $prefix = ''): string
     {
         return $this->convertTo(RgbColorspace::class)->toHex($prefix);
     }
 
+    /**
+     * Return the CMYK cyan channel
+     *
+     * @return ColorChannelInterface
+     */
     public function cyan(): ColorChannelInterface
     {
         /** @throws void */
         return $this->channel(Cyan::class);
     }
 
+    /**
+     * Return the CMYK magenta channel
+     *
+     * @return ColorChannelInterface
+     */
     public function magenta(): ColorChannelInterface
     {
         /** @throws void */
         return $this->channel(Magenta::class);
     }
 
+    /**
+     * Return the CMYK yellow channel
+     *
+     * @return ColorChannelInterface
+     */
     public function yellow(): ColorChannelInterface
     {
         /** @throws void */
         return $this->channel(Yellow::class);
     }
 
+    /**
+     * Return the CMYK key channel
+     *
+     * @return ColorChannelInterface
+     */
     public function key(): ColorChannelInterface
     {
         /** @throws void */
         return $this->channel(Key::class);
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorInterface::toString()
+     */
     public function toString(): string
     {
         return sprintf(
@@ -82,6 +131,11 @@ class Color extends AbstractColor
         );
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorInterface::isGreyscale()
+     */
     public function isGreyscale(): bool
     {
         return 0 === array_sum([
@@ -91,6 +145,11 @@ class Color extends AbstractColor
         ]);
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorInterface::isTransparent()
+     */
     public function isTransparent(): bool
     {
         return false;

src/Colors/Hsl/Color.php

@@ -26,6 +26,11 @@ class Color extends AbstractColor
         ];
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorInterface::colorspace()
+     */
     public function colorspace(): ColorspaceInterface
     {
         return new Colorspace();

src/Colors/Hsv/Color.php

@@ -26,6 +26,11 @@ class Color extends AbstractColor
         ];
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorInterface::colorspace()
+     */
     public function colorspace(): ColorspaceInterface
     {
         return new Colorspace();

src/Colors/Rgb/Channels/Alpha.php

@@ -6,6 +6,11 @@ namespace Intervention\Image\Colors\Rgb\Channels;
 
 class Alpha extends Red
 {
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorChannelInterface::toString()
+     */
     public function toString(): string
     {
         return strval(round($this->normalize(), 6));

src/Colors/Rgb/Color.php

@@ -36,6 +36,11 @@ class Color extends AbstractColor
         ];
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see ColorInterface::colorspace()
+     */
     public function colorspace(): ColorspaceInterface
     {
         return new Colorspace();