changeed driectory structure, moved scaling and appearance mode functionality to super classes

customtkinter/windows/widgets/font/ctk_font.py

@@ -0,0 +1,80 @@
+from tkinter.font import Font
+import copy
+from typing import List, Callable, Tuple
+
+from ..theme.theme_manager import ThemeManager
+
+
+class CTkFont(Font):
+    """
+    Font object with size in pixel, independent of scaling.
+    To get scaled tuple representation use create_scaled_tuple() method.
+
+    family	The font family name as a string.
+    size	The font height as an integer in pixel.
+    weight	'bold' for boldface, 'normal' for regular weight.
+    slant	'italic' for italic, 'roman' for unslanted.
+    underline	1 for underlined text, 0 for normal.
+    overstrike	1 for overstruck text, 0 for normal.
+
+    Tkinter Font: https://anzeljg.github.io/rin2/book2/2405/docs/tkinter/fonts.html
+    """
+
+    def __init__(self,
+                 family: str = "default_theme",
+                 size: int = "default_theme",
+                 weight: str = "normal",
+                 slant: str = "roman",
+                 underline: bool = False,
+                 overstrike: bool = False):
+
+        self._size_configure_callback_list: List[Callable] = []
+
+        self._family = family
+        self._size = ThemeManager.theme["text"]["size"] if size == "default_theme" else size
+        self._tuple_style_string = f"{weight} {slant} {'underline' if underline else ''} {'overstrike' if overstrike else ''}"
+
+        super().__init__(family=ThemeManager.theme["text"]["font"] if family == "default_theme" else family,
+                         size=-abs(self._size),
+                         weight=weight,
+                         slant=slant,
+                         underline=underline,
+                         overstrike=overstrike)
+
+    def add_size_configure_callback(self, callback: Callable):
+        """ add function, that gets called when font got configured """
+        self._size_configure_callback_list.append(callback)
+
+    def remove_size_configure_callback(self, callback: Callable):
+        """ remove function, that gets called when font got configured """
+        self._size_configure_callback_list.remove(callback)
+
+    def create_scaled_tuple(self, font_scaling: float) -> Tuple[str, int, str]:
+        """ return scaled tuple representation of font in the form (family: str, size: int, style: str)"""
+        return self._family, round(self._size * font_scaling), self._tuple_style_string
+
+    def config(self, *args, **kwargs):
+        raise AttributeError("'config' is not implemented for CTk widgets. For consistency, always use 'configure' instead.")
+
+    def configure(self, **kwargs):
+        if "size" in kwargs:
+            self._size = kwargs.pop("size")
+            super().configure(size=-abs(self._size))
+
+        super().configure(**kwargs)
+
+        # update style string for create_scaled_tuple() method
+        self._tuple_style_string = f"{super().cget('weight')} {super().cget('slant')} {'underline' if super().cget('underline') else ''} {'overstrike' if super().cget('overstrike') else ''}"
+
+        # call all functions registered with add_size_configure_callback()
+        for callback in self._size_configure_callback_list:
+            callback()
+
+    def cget(self, attribute_name: str) -> any:
+        if attribute_name == "size":
+            return self._size
+        else:
+            return super().cget(attribute_name)
+
+    def copy(self) -> "CTkFont":
+        return copy.deepcopy(self)

customtkinter/windows/widgets/font/font_manager.py

@@ -0,0 +1,66 @@
+import sys
+import os
+import shutil
+from typing import Union
+
+
+class FontManager:
+
+    linux_font_path = "~/.fonts/"
+
+    @classmethod
+    def init_font_manager(cls):
+        # Linux
+        if sys.platform.startswith("linux"):
+            try:
+                if not os.path.isdir(os.path.expanduser(cls.linux_font_path)):
+                    os.mkdir(os.path.expanduser(cls.linux_font_path))
+                return True
+            except Exception as err:
+                sys.stderr.write("FontManager error: " + str(err) + "\n")
+                return False
+
+        # other platforms
+        else:
+            return True
+
+    @classmethod
+    def windows_load_font(cls, font_path: Union[str, bytes], private: bool = True, enumerable: bool = False) -> bool:
+        """ Function taken from: https://stackoverflow.com/questions/11993290/truly-custom-font-in-tkinter/30631309#30631309 """
+
+        from ctypes import windll, byref, create_unicode_buffer, create_string_buffer
+
+        FR_PRIVATE = 0x10
+        FR_NOT_ENUM = 0x20
+
+        if isinstance(font_path, bytes):
+            path_buffer = create_string_buffer(font_path)
+            add_font_resource_ex = windll.gdi32.AddFontResourceExA
+        elif isinstance(font_path, str):
+            path_buffer = create_unicode_buffer(font_path)
+            add_font_resource_ex = windll.gdi32.AddFontResourceExW
+        else:
+            raise TypeError('font_path must be of type bytes or str')
+
+        flags = (FR_PRIVATE if private else 0) | (FR_NOT_ENUM if not enumerable else 0)
+        num_fonts_added = add_font_resource_ex(byref(path_buffer), flags, 0)
+        return bool(min(num_fonts_added, 1))
+
+    @classmethod
+    def load_font(cls, font_path: str) -> bool:
+        # Windows
+        if sys.platform.startswith("win"):
+            return cls.windows_load_font(font_path, private=True, enumerable=False)
+
+        # Linux
+        elif sys.platform.startswith("linux"):
+            try:
+                shutil.copy(font_path, os.path.expanduser(cls.linux_font_path))
+                return True
+            except Exception as err:
+                sys.stderr.write("FontManager error: " + str(err) + "\n")
+                return False
+
+        # macOS and others
+        else:
+            return False