feat(utils): colors added convertor for rgba to hex

bec_widgets/utils/colors.py

@@ -67,6 +67,44 @@ class Colors:
                 raise ValueError("Unsupported format. Please choose 'RGB', 'HEX', or 'QColor'.")
         return colors
 
+    @staticmethod
+    def hex_to_rgba(hex_color: str, alpha=255) -> tuple:
+        """
+        Convert HEX color to RGBA.
+
+        Args:
+            hex_color(str): HEX color string.
+            alpha(int): Alpha value (0-255). Default is 255 (opaque).
+
+        Returns:
+            tuple: RGBA color tuple (r, g, b, a).
+        """
+        hex_color = hex_color.lstrip("#")
+        if len(hex_color) == 6:
+            r, g, b = tuple(int(hex_color[i : i + 2], 16) for i in (0, 2, 4))
+        elif len(hex_color) == 8:
+            r, g, b, a = tuple(int(hex_color[i : i + 2], 16) for i in (0, 2, 4, 6))
+            return (r, g, b, a)
+        else:
+            raise ValueError("HEX color must be 6 or 8 characters long.")
+        return (r, g, b, alpha)
+
+    @staticmethod
+    def rgba_to_hex(r: int, g: int, b: int, a: int = 255) -> str:
+        """
+        Convert RGBA color to HEX.
+
+        Args:
+            r(int): Red value (0-255).
+            g(int): Green value (0-255).
+            b(int): Blue value (0-255).
+            a(int): Alpha value (0-255). Default is 255 (opaque).
+
+        Returns:
+            hec_color(str): HEX color string.
+        """
+        return "#{:02X}{:02X}{:02X}{:02X}".format(r, g, b, a)
+
     @staticmethod
     def validate_color(color: tuple | str) -> tuple | str:
         """

tests/unit_tests/test_color_validation.py

@@ -58,3 +58,18 @@ def test_color_validation_RGBA():
     assert "The color values must be between 0 and 255 in RGBA format (R,G,B,A)" in str(
         excinfo.value
     )
+
+
+def test_hex_to_rgba():
+    assert Colors.hex_to_rgba("#FF5733") == (255, 87, 51, 255)
+    assert Colors.hex_to_rgba("#FF573380") == (255, 87, 51, 128)
+    assert Colors.hex_to_rgba("#FF5733", 128) == (255, 87, 51, 128)
+
+    with pytest.raises(ValueError):
+        Colors.hex_to_rgba("#FF573")
+
+
+def test_rgba_to_hex():
+    assert Colors.rgba_to_hex(255, 87, 51, 255) == "#FF5733FF"
+    assert Colors.rgba_to_hex(255, 87, 51, 128) == "#FF573380"
+    assert Colors.rgba_to_hex(255, 87, 51) == "#FF5733FF"