import tkinter
from typing import Union, Tuple, List, Dict, Callable, Optional, Literal
from .theme.theme_manager import ThemeManager
from .ctk_button import CTkButton
from .ctk_frame import CTkFrame
from .font.ctk_font import CTkFont
class CTkSegmentedButton(CTkFrame):
"""
Segmented button with corner radius, border width, variable support.
For detailed information check out the documentation.
"""
def __init__(self,
master: any,
width: int = 140,
height: int = 28,
corner_radius: Optional[int] = None,
border_width: int = 3,
bg_color: Union[str, Tuple[str, str]] = "transparent",
fg_color: Optional[Union[str, Tuple[str, str]]] = None,
selected_color: Optional[Union[str, Tuple[str, str]]] = None,
selected_hover_color: Optional[Union[str, Tuple[str, str]]] = None,
unselected_color: Optional[Union[str, Tuple[str, str]]] = None,
unselected_hover_color: Optional[Union[str, Tuple[str, str]]] = None,
text_color: Optional[Union[str, Tuple[str, str]]] = None,
text_color_disabled: Optional[Union[str, Tuple[str, str]]] = None,
background_corner_colors: Union[Tuple[Union[str, Tuple[str, str]]], None] = None,
font: Optional[Union[tuple, CTkFont]] = None,
values: Optional[list] = None,
variable: Union[tkinter.Variable, None] = None,
dynamic_resizing: bool = True,
command: Union[Callable[[str], None], None] = None,
state: str = "normal",
**kwargs):
super().__init__(master=master, bg_color=bg_color, width=width, height=height, **kwargs)
self._sb_fg_color = ThemeManager.theme["color"]["segmented_button"] if fg_color is None else self._check_color_type(fg_color)
self._sb_selected_color = ThemeManager.theme["color"]["button"] if selected_color is None else self._check_color_type(selected_color)
self._sb_selected_hover_color = ThemeManager.theme["color"]["button_hover"] if selected_hover_color is None else self._check_color_type(selected_hover_color)
self._sb_unselected_color = ThemeManager.theme["color"]["segmented_button_unselected"] if unselected_color is None else self._check_color_type(unselected_color)
self._sb_unselected_hover_color = ThemeManager.theme["color"]["segmented_button_unselected_hover"] if unselected_hover_color is None else self._check_color_type(unselected_hover_color)
self._sb_text_color = ThemeManager.theme["color"]["text_button"] if text_color is None else self._check_color_type(text_color)
self._sb_text_color_disabled = ThemeManager.theme["color"]["text_button_disabled"] if text_color_disabled is None else self._check_color_type(text_color_disabled)
self._sb_corner_radius = ThemeManager.theme["shape"]["button_corner_radius"] if corner_radius is None else corner_radius
self._sb_border_width = ThemeManager.theme["shape"]["button_border_width"] if border_width is None else border_width
self._background_corner_colors = background_corner_colors # rendering options for DrawEngine
self._command: Callable[[str], None] = command
self._font = (ThemeManager.theme["text"]["font"], ThemeManager.theme["text"]["size"]) if font is None else font
self._state = state
self._buttons_dict: Dict[str, CTkButton] = {} # mapped from value to button object
if values is None:
self._value_list: List[str] = ["CTkSegmentedButton"]
else:
self._value_list: List[str] = values # Values ordered like buttons rendered on widget
self._dynamic_resizing = dynamic_resizing
if not self._dynamic_resizing:
self.grid_propagate(False)
self._check_unique_values(self._value_list)
self._current_value: str = ""
if len(self._value_list) > 0:
self._create_buttons_from_values()
self._create_button_grid()
self._variable = variable
self._variable_callback_blocked: bool = False
self._variable_callback_name: Union[str, None] = None
if self._variable is not None:
self._variable_callback_name = self._variable.trace_add("write", self._variable_callback)
self.set(self._variable.get(), from_variable_callback=True)
super().configure(corner_radius=self._sb_corner_radius, fg_color="transparent")
def destroy(self):
if self._variable is not None: # remove old callback
self._variable.trace_remove("write", self._variable_callback_name)
super().destroy()
def _set_dimensions(self, width: int = None, height: int = None):
super()._set_dimensions(width, height)
for button in self._buttons_dict.values():
button.configure(height=height)
def _variable_callback(self, var_name, index, mode):
if not self._variable_callback_blocked:
self.set(self._variable.get(), from_variable_callback=True)
def _get_index_by_value(self, value: str):
for index, value_from_list in enumerate(self._value_list):
if value_from_list == value:
return index
raise ValueError(f"CTkSegmentedButton does not contain value '{value}'")
def _configure_button_corners_for_index(self, index: int):
if index == 0 and len(self._value_list) == 1:
if self._background_corner_colors is None:
self._buttons_dict[self._value_list[index]].configure(background_corner_colors=(self._bg_color, self._bg_color, self._bg_color, self._bg_color))
else:
self._buttons_dict[self._value_list[index]].configure(background_corner_colors=self._background_corner_colors)
elif index == 0:
if self._background_corner_colors is None:
self._buttons_dict[self._value_list[index]].configure(background_corner_colors=(self._bg_color, self._sb_fg_color, self._sb_fg_color, self._bg_color))
else:
self._buttons_dict[self._value_list[index]].configure(background_corner_colors=(self._background_corner_colors[0], self._sb_fg_color, self._sb_fg_color, self._background_corner_colors[3]))
elif index == len(self._value_list) - 1:
if self._background_corner_colors is None:
self._buttons_dict[self._value_list[index]].configure(background_corner_colors=(self._sb_fg_color, self._bg_color, self._bg_color, self._sb_fg_color))
else:
self._buttons_dict[self._value_list[index]].configure(background_corner_colors=(self._sb_fg_color, self._background_corner_colors[1], self._background_corner_colors[2], self._sb_fg_color))
else:
self._buttons_dict[self._value_list[index]].configure(background_corner_colors=(self._sb_fg_color, self._sb_fg_color, self._sb_fg_color, self._sb_fg_color))
def _unselect_button_by_value(self, value: str):
if value in self._buttons_dict:
self._buttons_dict[value].configure(fg_color=self._sb_unselected_color,
hover_color=self._sb_unselected_hover_color)
def _select_button_by_value(self, value: str):
if self._current_value is not None and self._current_value != "":
self._unselect_button_by_value(self._current_value)
self._current_value = value
self._buttons_dict[value].configure(fg_color=self._sb_selected_color,
hover_color=self._sb_selected_hover_color)
def _create_button(self, index: int, value: str) -> CTkButton:
new_button = CTkButton(self,
width=0,
height=self._current_height,
corner_radius=self._sb_corner_radius,
border_width=self._sb_border_width,
fg_color=self._sb_unselected_color,
border_color=self._sb_fg_color,
hover_color=self._sb_unselected_hover_color,
text_color=self._sb_text_color,
text_color_disabled=self._sb_text_color_disabled,
text=value,
font=self._font,
state=self._state,
command=lambda v=value: self.set(v, from_button_callback=True),
background_corner_colors=None,
round_width_to_even_numbers=False,
round_height_to_even_numbers=False) # DrawEngine rendering option (so that theres no gap between buttons)
return new_button
@staticmethod
def _check_unique_values(values: List[str]):
""" raises exception if values are not unique """
if len(values) != len(set(values)):
raise ValueError("CTkSegmentedButton values are not unique")
def _create_button_grid(self):
# remove minsize from every grid cell in the first row
number_of_columns, _ = self.grid_size()
for n in range(number_of_columns):
self.grid_columnconfigure(n, weight=1, minsize=0)
self.grid_rowconfigure(0, weight=1)
for index, value in enumerate(self._value_list):
self.grid_columnconfigure(index, weight=1, minsize=self._current_height)
self._buttons_dict[value].grid(row=0, column=index, sticky="ew")
def _create_buttons_from_values(self):
assert len(self._buttons_dict) == 0
assert len(self._value_list) > 0
for index, value in enumerate(self._value_list):
self._buttons_dict[value] = self._create_button(index, value)
self._configure_button_corners_for_index(index)
def configure(self, **kwargs):
if "bg_color" in kwargs:
super().configure(bg_color=kwargs.pop("bg_color"))
if len(self._buttons_dict) > 0:
self._configure_button_corners_for_index(0)
if len(self._buttons_dict) > 1:
max_index = len(self._buttons_dict) - 1
self._configure_button_corners_for_index(max_index)
if "fg_color" in kwargs:
self._sb_fg_color = self._check_color_type(kwargs.pop("fg_color"))
for index, button in enumerate(self._buttons_dict.values()):
button.configure(border_color=self._sb_fg_color)
self._configure_button_corners_for_index(index)
if "selected_color" in kwargs:
self._sb_selected_color = self._check_color_type(kwargs.pop("selected_color"))
if self._current_value in self._buttons_dict:
self._buttons_dict[self._current_value].configure(fg_color=self._sb_selected_color)
if "selected_hover_color" in kwargs:
self._sb_selected_hover_color = self._check_color_type(kwargs.pop("selected_hover_color"))
if self._current_value in self._buttons_dict:
self._buttons_dict[self._current_value].configure(hover_color=self._sb_selected_hover_color)
if "unselected_color" in kwargs:
self._sb_unselected_color = self._check_color_type(kwargs.pop("unselected_color"))
for value, button in self._buttons_dict.items():
if value != self._current_value:
button.configure(fg_color=self._sb_unselected_color)
if "unselected_hover_color" in kwargs:
self._sb_unselected_hover_color = self._check_color_type(kwargs.pop("unselected_hover_color"))
for value, button in self._buttons_dict.items():
if value != self._current_value:
button.configure(hover_color=self._sb_unselected_hover_color)
if "text_color" in kwargs:
self._sb_text_color = self._check_color_type(kwargs.pop("text_color"))
for button in self._buttons_dict.values():
button.configure(text_color=self._sb_text_color)
if "text_color_disabled" in kwargs:
self._sb_text_color_disabled = self._check_color_type(kwargs.pop("text_color_disabled"))
for button in self._buttons_dict.values():
button.configure(text_color_disabled=self._sb_text_color_disabled)
if "background_corner_colors" in kwargs:
self._background_corner_colors = kwargs.pop("background_corner_colors")
for i in range(len(self._buttons_dict)):
self._configure_button_corners_for_index(i)
if "font" in kwargs:
self._font = kwargs.pop("font")
for button in self._buttons_dict.values():
button.configure(font=self._font)
if "values" in kwargs:
for button in self._buttons_dict.values():
button.destroy()
self._buttons_dict.clear()
self._value_list = kwargs.pop("values")
self._check_unique_values(self._value_list)
if len(self._value_list) > 0:
self._create_buttons_from_values()
self._create_button_grid()
if self._current_value in self._value_list:
self._select_button_by_value(self._current_value)
if "variable" in kwargs:
if self._variable is not None: # remove old callback
self._variable.trace_remove("write", self._variable_callback_name)
self._variable = kwargs.pop("variable")
if self._variable is not None and self._variable != "":
self._variable_callback_name = self._variable.trace_add("write", self._variable_callback)
self.set(self._variable.get(), from_variable_callback=True)
else:
self._variable = None
if "dynamic_resizing" in kwargs:
self._dynamic_resizing = kwargs.pop("dynamic_resizing")
if not self._dynamic_resizing:
self.grid_propagate(False)
else:
self.grid_propagate(True)
if "command" in kwargs:
self._command = kwargs.pop("command")
if "state" in kwargs:
self._state = kwargs.pop("state")
for button in self._buttons_dict.values():
button.configure(state=self._state)
super().configure(**kwargs)
def cget(self, attribute_name: str) -> any:
if attribute_name == "corner_radius":
return self._sb_corner_radius
elif attribute_name == "border_width":
return self._sb_border_width
elif attribute_name == "fg_color":
return self._sb_fg_color
elif attribute_name == "selected_color":
return self._sb_selected_color
elif attribute_name == "selected_hover_color":
return self._sb_selected_hover_color
elif attribute_name == "unselected_color":
return self._sb_unselected_color
elif attribute_name == "unselected_hover_color":
return self._sb_unselected_hover_color
elif attribute_name == "text_color":
return self._sb_text_color
elif attribute_name == "text_color_disabled":
return self._sb_text_color_disabled
elif attribute_name == "font":
return self._font
elif attribute_name == "values":
return self._value_list
elif attribute_name == "variable":
return self._variable
elif attribute_name == "dynamic_resizing":
return self._dynamic_resizing
elif attribute_name == "command":
return self._command
else:
return super().cget(attribute_name)
def set(self, value: str, from_variable_callback: bool = False, from_button_callback: bool = False):
if value == self._current_value:
return
elif value in self._buttons_dict:
self._select_button_by_value(value)
if self._variable is not None and not from_variable_callback:
self._variable_callback_blocked = True
self._variable.set(value)
self._variable_callback_blocked = False
else:
if self._current_value in self._buttons_dict:
self._unselect_button_by_value(self._current_value)
self._current_value = value
if self._variable is not None and not from_variable_callback:
self._variable_callback_blocked = True
self._variable.set(value)
self._variable_callback_blocked = False
if from_button_callback:
if self._command is not None:
self._command(self._current_value)
def get(self) -> str:
return self._current_value
def insert(self, index: int, value: str):
if value not in self._buttons_dict:
if value != "":
self._value_list.insert(index, value)
self._buttons_dict[value] = self._create_button(index, value)
self._configure_button_corners_for_index(index)
if index > 0:
self._configure_button_corners_for_index(index - 1)
if index < len(self._buttons_dict) - 1:
self._configure_button_corners_for_index(index + 1)
self._create_button_grid()
if value == self._current_value:
self._select_button_by_value(self._current_value)
else:
raise ValueError(f"CTkSegmentedButton can not insert value ''")
else:
raise ValueError(f"CTkSegmentedButton can not insert value '{value}', already part of the values")
def move(self, new_index: int, value: str):
if 0 <= new_index < len(self._value_list):
if value in self._buttons_dict:
self.delete(value)
self.insert(new_index, value)
else:
raise ValueError(f"CTkSegmentedButton has no value named '{value}'")
else:
raise ValueError(f"CTkSegmentedButton new_index {new_index} not in range of value list with len {len(self._value_list)}")
def delete(self, value: str):
if value in self._buttons_dict:
self._buttons_dict[value].destroy()
self._buttons_dict.pop(value)
index_to_remove = self._get_index_by_value(value)
self._value_list.pop(index_to_remove)
# removed index was outer right element
if index_to_remove == len(self._buttons_dict) and len(self._buttons_dict) > 0:
self._configure_button_corners_for_index(index_to_remove - 1)
# removed index was outer left element
if index_to_remove == 0 and len(self._buttons_dict) > 0:
self._configure_button_corners_for_index(0)
#if index_to_remove <= len(self._buttons_dict) - 1:
# self._configure_button_corners_for_index(index_to_remove)
self._create_button_grid()
else:
raise ValueError(f"CTkSegmentedButton does not contain value '{value}'")