Added support for rgb as color from json

sane_doc_reports/styles/colors.py

@@ -29,6 +29,38 @@ def name_to_hex(color_name: str):
     """ Get the hex representation of a color name (CSS4) """
     return colors[color_name].lower()
 
+def combine_rgba_with_white_background(rgba_color_string):
+    """ Turns rgba color string to a RGB object"""
+    # Extract the RGBA values
+    rgba_values = rgba_color_string.strip("rgba()").split(',')
+    r_source, g_source, b_source = map(int, rgba_values[:3])
+    alpha = float(rgba_values[-1])
+
+    # Calculate the combined RGB values assuming a white background (255, 255, 255)
+    r_combined = int(((1 - alpha) * 255) + (alpha * r_source))
+    g_combined = int(((1 - alpha) * 255) + (alpha * g_source))
+    b_combined = int(((1 - alpha) * 255) + (alpha * b_source))
+
+    return RGBColor(r_combined, g_combined, b_combined)
+def parse_color_string(color_string):
+    """
+    Parses rgb/rgba color string to a RGB object
+    """
+    color_string = color_string.strip()  # Remove leading/trailing whitespace
+    if color_string.startswith("rgb("):
+        rgb_values = color_string[len("rgb("):-1].split(',')
+        if len(rgb_values) != 3:
+            raise ValueError("Invalid RGB color format")
+        r, g, b = map(int, rgb_values)
+        return RGBColor(r, g, b)
+    elif color_string.startswith("rgba("):
+        rgba_values = color_string[len("rgba("):-1].split(',')
+        if len(rgba_values) != 4:
+            raise ValueError("Invalid RGBA color format")
+        else:
+            return combine_rgba_with_white_background(color_string)
+    else:
+        raise ValueError("Unsupported color format")
 
 def hex_to_rgb(hex_color: str):
     """

sane_doc_reports/styles/utils.py

@@ -5,7 +5,7 @@
 
 from sane_doc_reports.domain import CellObject
 from sane_doc_reports.domain.Section import Section
-from sane_doc_reports.styles.colors import name_to_rgb, hex_to_rgb, name_to_hex
+from sane_doc_reports.styles.colors import name_to_rgb, hex_to_rgb, name_to_hex, parse_color_string
 from sane_doc_reports.conf import PYDOCX_FONT_SIZE, PYDOCX_FONT, \
     PYDOCX_FONT_BOLD, PYDOCX_FONT_STRIKE, PYDOCX_FONT_UNDERLINE, \
     PYDOCX_FONT_ITALIC, PYDOCX_FONT_COLOR, PYDOCX_TEXT_ALIGN, \
@@ -40,7 +40,10 @@ def _apply_cell_styling(cell_object: CellObject, section: Section):
 
     # Font color
     if PYDOCX_FONT_COLOR in style:
-        if style[PYDOCX_FONT_COLOR][0] != '#':
+        if style[PYDOCX_FONT_COLOR][:3] == 'rgb':
+            cell_object.run.font.color.rgb = parse_color_string(
+                style[PYDOCX_FONT_COLOR])
+        elif style[PYDOCX_FONT_COLOR][0] != '#':
             cell_object.run.font.color.rgb = name_to_rgb(
                 style[PYDOCX_FONT_COLOR])
         else:

tests/library/test_utils.py

@@ -1,7 +1,9 @@
 import arrow
 import pytest
 from arrow.parser import ParserError
+from docx.shared import RGBColor
 
+from sane_doc_reports.styles.colors import parse_color_string
 from sane_doc_reports.utils import get_formatted_date, has_anomalies
 
 
@@ -61,3 +63,43 @@ def test_has_anomalies():
     assert has_anomalies(yes_anoms) is True
     yes_anoms = [1, 200, 100, 200, 1]
     assert has_anomalies(yes_anoms) is True
+
+def test_parse_rgb():
+    """
+        Given: rgb string to parse to RGB object
+        When: styling a cell.
+        Then: assert the correct object is returned.
+    """
+    # Test parsing an RGB color string
+    rgb_color_string = "rgb(55,56,57)"
+    parsed_color = parse_color_string(rgb_color_string)
+
+    # Expected RGBColor object
+    expected_color = RGBColor(55, 56, 57)
+
+    assert parsed_color == expected_color
+
+def test_parse_rgba():
+    """
+        Given: rgba string to parse to RGB object
+        When: styling a cell.
+        Then: assert the correct object is returned.
+    """
+    rgba_color_string = "rgba(55,56,57,0.5)"
+    parsed_color = parse_color_string(rgba_color_string)
+
+    # Expected combined RGBColor object (based on combine_rgba_with_white_background)
+    expected_color = RGBColor(155, 155, 156)
+
+    assert parsed_color == expected_color
+
+def test_invalid_format():
+    """
+        Given: rgb string to parse to RGB object
+        When: styling a cell.
+        Then: assert the correct object is returned.
+    """
+    invalid_color_string = "invalid_color_format"
+
+    with pytest.raises(ValueError):
+        parse_color_string(invalid_color_string)