Factor rgb_to_hex, hex_to_int and int_to_hex away from StringMobject and to utils/color

manimlib/mobject/svg/mtex_mobject.py

@@ -3,6 +3,8 @@ from __future__ import annotations
 import re
 
 from manimlib.mobject.svg.string_mobject import StringMobject
+from manimlib.utils.color import color_to_hex
+from manimlib.utils.color import hex_to_int
 from manimlib.utils.tex_file_writing import tex_content_to_svg_file
 
 from typing import TYPE_CHECKING
@@ -159,7 +161,7 @@ class MTex(StringMobject):
 
     @staticmethod
     def get_color_command(rgb_hex: str) -> str:
-        rgb = MTex.hex_to_int(rgb_hex)
+        rgb = hex_to_int(rgb_hex)
         rg, b = divmod(rgb, 256)
         r, g = divmod(rg, 256)
         return f"\\color[RGB]{{{r}, {g}, {b}}}"
@@ -181,7 +183,7 @@ class MTex(StringMobject):
         suffix_lines = []
         if not is_labelled:
             prefix_lines.append(self.get_color_command(
-                self.color_to_hex(self.base_color)
+                color_to_hex(self.base_color)
             ))
         if self.alignment:
             prefix_lines.append(self.alignment)

manimlib/mobject/svg/string_mobject.py

@@ -10,8 +10,9 @@ from manimlib.constants import WHITE
 from manimlib.logger import log
 from manimlib.mobject.svg.svg_mobject import SVGMobject
 from manimlib.mobject.types.vectorized_mobject import VGroup
-from manimlib.utils.color import color_to_rgb
+from manimlib.utils.color import color_to_hex
-from manimlib.utils.color import rgb_to_hex
+from manimlib.utils.color import hex_to_int
+from manimlib.utils.color import int_to_hex
 
 from typing import TYPE_CHECKING
 
@@ -117,7 +118,7 @@ class StringMobject(SVGMobject, ABC):
         for submob, labelled_svg_submob in zip(
             self.submobjects, labelled_svg.submobjects
         ):
-            label = self.hex_to_int(self.color_to_hex(
+            label = hex_to_int(color_to_hex(
                 labelled_svg_submob.get_fill_color()
             ))
             if label >= labels_count:
@@ -129,7 +130,7 @@ class StringMobject(SVGMobject, ABC):
                 "Unrecognizable color labels detected (%s). " + \
                 "The result could be unexpected.",
                 ", ".join(
-                    self.int_to_hex(color)
+                    int_to_hex(color)
                     for color in unrecognizable_colors
                 )
             )
@@ -196,18 +197,6 @@ class StringMobject(SVGMobject, ABC):
     def span_contains(span_0: Span, span_1: Span) -> bool:
         return span_0[0] <= span_1[0] and span_0[1] >= span_1[1]
 
-    @staticmethod
-    def color_to_hex(color: ManimColor) -> str:
-        return rgb_to_hex(color_to_rgb(color))
-
-    @staticmethod
-    def hex_to_int(rgb_hex: str) -> int:
-        return int(rgb_hex[1:], 16)
-
-    @staticmethod
-    def int_to_hex(rgb_int: int) -> str:
-        return f"#{rgb_int:06x}".upper()
-
     # Parsing
 
     def parse(self) -> None:
@@ -380,7 +369,7 @@ class StringMobject(SVGMobject, ABC):
             lambda label, flag, attr_dict: self.get_command_string(
                 attr_dict,
                 is_end=flag < 0,
-                label_hex=self.int_to_hex(label) if is_labelled else None
+                label_hex=int_to_hex(label) if is_labelled else None
             )
         )
         prefix, suffix = self.get_content_prefix_and_suffix(

manimlib/mobject/svg/text_mobject.py

@@ -15,6 +15,8 @@ from manimlib.constants import NORMAL
 from manimlib.logger import log
 from manimlib.mobject.svg.string_mobject import StringMobject
 from manimlib.utils.customization import get_customization
+from manimlib.utils.color import color_to_hex
+from manimlib.utils.color import int_to_hex
 from manimlib.utils.directories import get_downloads_dir
 from manimlib.utils.directories import get_text_dir
 from manimlib.utils.simple_functions import hash_string
@@ -366,7 +368,7 @@ class MarkupText(StringMobject):
         self, is_labelled: bool
     ) -> tuple[str, str]:
         global_attr_dict = {
-            "foreground": self.color_to_hex(self.base_color),
+            "foreground": color_to_hex(self.base_color),
             "font_family": self.font,
             "font_style": self.slant,
             "font_weight": self.weight,
@@ -394,7 +396,7 @@ class MarkupText(StringMobject):
             self.get_command_string(
                 global_attr_dict,
                 is_end=is_end,
-                label_hex=self.int_to_hex(0) if is_labelled else None
+                label_hex=int_to_hex(0) if is_labelled else None
             )
             for is_end in (False, True)
         )

manimlib/utils/color.py

@@ -62,6 +62,18 @@ def color_to_int_rgba(color: ManimColor, opacity: float = 1.0) -> np.ndarray[int
     return np.array([*color_to_int_rgb(color), alpha], dtype=np.uint8)
 
 
+def color_to_hex(color: ManimColor) -> str:
+    return rgb_to_hex(color_to_rgb(color))
+
+
+def hex_to_int(rgb_hex: str) -> int:
+    return int(rgb_hex[1:], 16)
+
+
+def int_to_hex(rgb_int: int) -> str:
+    return f"#{rgb_int:06x}".upper()
+
+
 def color_gradient(
     reference_colors: Iterable[ManimColor],
     length_of_output: int