import tkinter
import sys
from typing import Union, Tuple, Callable, Optional
from .core_rendering import CTkCanvas
from .theme import ThemeManager
from .core_rendering import DrawEngine
from .core_widget_classes import CTkBaseClass
from .font import CTkFont
class CTkRadioButton(CTkBaseClass):
"""
Radiobutton with rounded corners, border, label, variable support, command.
For detailed information check out the documentation.
"""
def __init__(self,
master: any,
width: int = 100,
height: int = 22,
radiobutton_width: int = 22,
radiobutton_height: int = 22,
corner_radius: Optional[int] = None,
border_width_unchecked: Optional[int] = None,
border_width_checked: Optional[int] = None,
bg_color: Union[str, Tuple[str, str]] = "transparent",
fg_color: Optional[Union[str, Tuple[str, str]]] = None,
hover_color: Optional[Union[str, Tuple[str, str]]] = None,
border_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,
text: str = "CTkRadioButton",
font: Optional[Union[tuple, CTkFont]] = None,
textvariable: Union[tkinter.Variable, None] = None,
variable: Union[tkinter.Variable, None] = None,
value: Union[int, str] = 0,
state: str = tkinter.NORMAL,
hover: bool = True,
command: Union[Callable, None] = None,
**kwargs):
# transfer basic functionality (_bg_color, size, __appearance_mode, scaling) to CTkBaseClass
super().__init__(master=master, bg_color=bg_color, width=width, height=height, **kwargs)
# dimensions
self._radiobutton_width = radiobutton_width
self._radiobutton_height = radiobutton_height
# color
self._fg_color = ThemeManager.theme["CTkRadioButton"]["fg_color"] if fg_color is None else self._check_color_type(fg_color)
self._hover_color = ThemeManager.theme["CTkRadioButton"]["hover_color"] if hover_color is None else self._check_color_type(hover_color)
self._border_color = ThemeManager.theme["CTkRadioButton"]["border_color"] if border_color is None else self._check_color_type(border_color)
# shape
self._corner_radius = ThemeManager.theme["CTkRadioButton"]["corner_radius"] if corner_radius is None else corner_radius
self._border_width_unchecked = ThemeManager.theme["CTkRadioButton"]["border_width_unchecked"] if border_width_unchecked is None else border_width_unchecked
self._border_width_checked = ThemeManager.theme["CTkRadioButton"]["border_width_checked"] if border_width_checked is None else border_width_checked
# text
self._text = text
self._text_label: Union[tkinter.Label, None] = None
self._text_color = ThemeManager.theme["CTkRadioButton"]["text_color"] if text_color is None else self._check_color_type(text_color)
self._text_color_disabled = ThemeManager.theme["CTkRadioButton"]["text_color_disabled"] if text_color_disabled is None else self._check_color_type(text_color_disabled)
# font
self._font = CTkFont() if font is None else self._check_font_type(font)
if isinstance(self._font, CTkFont):
self._font.add_size_configure_callback(self._update_font)
# callback and control variables
self._command = command
self._state = state
self._hover = hover
self._check_state: bool = False
self._value = value
self._variable: tkinter.Variable = variable
self._variable_callback_blocked: bool = False
self._textvariable = textvariable
self._variable_callback_name: Union[str, None] = None
# configure grid system (3x1)
self.grid_columnconfigure(0, weight=0)
self.grid_columnconfigure(1, weight=0, minsize=self._apply_widget_scaling(6))
self.grid_columnconfigure(2, weight=1)
self.grid_rowconfigure(0, weight=1)
self._bg_canvas = CTkCanvas(master=self,
highlightthickness=0,
width=self._apply_widget_scaling(self._current_width),
height=self._apply_widget_scaling(self._current_height))
self._bg_canvas.grid(row=0, column=0, columnspan=3, sticky="nswe")
self._canvas = CTkCanvas(master=self,
highlightthickness=0,
width=self._apply_widget_scaling(self._radiobutton_width),
height=self._apply_widget_scaling(self._radiobutton_height))
self._canvas.grid(row=0, column=0)
self._draw_engine = DrawEngine(self._canvas)
self._text_label = tkinter.Label(master=self,
bd=0,
padx=0,
pady=0,
text=self._text,
justify=tkinter.LEFT,
font=self._apply_font_scaling(self._font),
textvariable=self._textvariable)
self._text_label.grid(row=0, column=2, sticky="w")
self._text_label["anchor"] = "w"
if self._variable is not None:
self._variable_callback_name = self._variable.trace_add("write", self._variable_callback)
self._check_state = True if self._variable.get() == self._value else False
self._create_bindings()
self._set_cursor()
self._draw()
def _create_bindings(self, sequence: Optional[str] = None):
""" set necessary bindings for functionality of widget, will overwrite other bindings """
if sequence is None or sequence == "<Enter>":
self._canvas.bind("<Enter>", self._on_enter)
self._text_label.bind("<Enter>", self._on_enter)
if sequence is None or sequence == "<Leave>":
self._canvas.bind("<Leave>", self._on_leave)
self._text_label.bind("<Leave>", self._on_leave)
if sequence is None or sequence == "<Button-1>":
self._canvas.bind("<Button-1>", self.invoke)
self._text_label.bind("<Button-1>", self.invoke)
def _set_scaling(self, *args, **kwargs):
super()._set_scaling(*args, **kwargs)
self.grid_columnconfigure(1, weight=0, minsize=self._apply_widget_scaling(6))
self._text_label.configure(font=self._apply_font_scaling(self._font))
self._bg_canvas.configure(width=self._apply_widget_scaling(self._desired_width),
height=self._apply_widget_scaling(self._desired_height))
self._canvas.configure(width=self._apply_widget_scaling(self._radiobutton_width),
height=self._apply_widget_scaling(self._radiobutton_height))
self._draw(no_color_updates=True)
def _set_dimensions(self, width: int = None, height: int = None):
super()._set_dimensions(width, height)
self._bg_canvas.configure(width=self._apply_widget_scaling(self._desired_width),
height=self._apply_widget_scaling(self._desired_height))
def _update_font(self):
""" pass font to tkinter widgets with applied font scaling and update grid with workaround """
self._text_label.configure(font=self._apply_font_scaling(self._font))
# Workaround to force grid to be resized when text changes size.
# Otherwise grid will lag and only resizes if other mouse action occurs.
self._bg_canvas.grid_forget()
self._bg_canvas.grid(row=0, column=0, columnspan=3, sticky="nswe")
def destroy(self):
if self._variable is not None:
self._variable.trace_remove("write", self._variable_callback_name)
if isinstance(self._font, CTkFont):
self._font.remove_size_configure_callback(self._update_font)
super().destroy()
def _draw(self, no_color_updates=False):
super()._draw(no_color_updates)
if self._check_state is True:
requires_recoloring = self._draw_engine.draw_rounded_rect_with_border(self._apply_widget_scaling(self._radiobutton_width),
self._apply_widget_scaling(self._radiobutton_height),
self._apply_widget_scaling(self._corner_radius),
self._apply_widget_scaling(self._border_width_checked))
else:
requires_recoloring = self._draw_engine.draw_rounded_rect_with_border(self._apply_widget_scaling(self._radiobutton_width),
self._apply_widget_scaling(self._radiobutton_height),
self._apply_widget_scaling(self._corner_radius),
self._apply_widget_scaling(self._border_width_unchecked))
if no_color_updates is False or requires_recoloring:
self._bg_canvas.configure(bg=self._apply_appearance_mode(self._bg_color))
self._canvas.configure(bg=self._apply_appearance_mode(self._bg_color))
if self._check_state is False:
self._canvas.itemconfig("border_parts",
outline=self._apply_appearance_mode(self._border_color),
fill=self._apply_appearance_mode(self._border_color))
else:
self._canvas.itemconfig("border_parts",
outline=self._apply_appearance_mode(self._fg_color),
fill=self._apply_appearance_mode(self._fg_color))
self._canvas.itemconfig("inner_parts",
outline=self._apply_appearance_mode(self._bg_color),
fill=self._apply_appearance_mode(self._bg_color))
if self._state == tkinter.DISABLED:
self._text_label.configure(fg=self._apply_appearance_mode(self._text_color_disabled))
else:
self._text_label.configure(fg=self._apply_appearance_mode(self._text_color))
self._text_label.configure(bg=self._apply_appearance_mode(self._bg_color))
def configure(self, require_redraw=False, **kwargs):
if "corner_radius" in kwargs:
self._corner_radius = kwargs.pop("corner_radius")
require_redraw = True
if "border_width_unchecked" in kwargs:
self._border_width_unchecked = kwargs.pop("border_width_unchecked")
require_redraw = True
if "border_width_checked" in kwargs:
self._border_width_checked = kwargs.pop("border_width_checked")
require_redraw = True
if "radiobutton_width" in kwargs:
self._radiobutton_width = kwargs.pop("radiobutton_width")
self._canvas.configure(width=self._apply_widget_scaling(self._radiobutton_width))
require_redraw = True
if "radiobutton_height" in kwargs:
self._radiobutton_height = kwargs.pop("radiobutton_height")
self._canvas.configure(height=self._apply_widget_scaling(self._radiobutton_height))
require_redraw = True
if "text" in kwargs:
self._text = kwargs.pop("text")
self._text_label.configure(text=self._text)
if "font" in kwargs:
if isinstance(self._font, CTkFont):
self._font.remove_size_configure_callback(self._update_font)
self._font = self._check_font_type(kwargs.pop("font"))
if isinstance(self._font, CTkFont):
self._font.add_size_configure_callback(self._update_font)
self._update_font()
if "state" in kwargs:
self._state = kwargs.pop("state")
self._set_cursor()
require_redraw = True
if "fg_color" in kwargs:
self._fg_color = self._check_color_type(kwargs.pop("fg_color"))
require_redraw = True
if "hover_color" in kwargs:
self._hover_color = self._check_color_type(kwargs.pop("hover_color"))
require_redraw = True
if "text_color" in kwargs:
self._text_color = self._check_color_type(kwargs.pop("text_color"))
require_redraw = True
if "text_color_disabled" in kwargs:
self._text_color_disabled = self._check_color_type(kwargs.pop("text_color_disabled"))
require_redraw = True
if "border_color" in kwargs:
self._border_color = self._check_color_type(kwargs.pop("border_color"))
require_redraw = True
if "hover" in kwargs:
self._hover = kwargs.pop("hover")
if "command" in kwargs:
self._command = kwargs.pop("command")
if "textvariable" in kwargs:
self._textvariable = kwargs.pop("textvariable")
self._text_label.configure(textvariable=self._textvariable)
if "variable" in kwargs:
if self._variable is not None:
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._check_state = True if self._variable.get() == self._value else False
require_redraw = True
super().configure(require_redraw=require_redraw, **kwargs)
def cget(self, attribute_name: str) -> any:
if attribute_name == "corner_radius":
return self._corner_radius
elif attribute_name == "border_width_unchecked":
return self._border_width_unchecked
elif attribute_name == "border_width_checked":
return self._border_width_checked
elif attribute_name == "radiobutton_width":
return self._radiobutton_width
elif attribute_name == "radiobutton_height":
return self._radiobutton_height
elif attribute_name == "fg_color":
return self._fg_color
elif attribute_name == "hover_color":
return self._hover_color
elif attribute_name == "border_color":
return self._border_color
elif attribute_name == "text_color":
return self._text_color
elif attribute_name == "text_color_disabled":
return self._text_color_disabled
elif attribute_name == "text":
return self._text
elif attribute_name == "font":
return self._font
elif attribute_name == "textvariable":
return self._textvariable
elif attribute_name == "variable":
return self._variable
elif attribute_name == "value":
return self._value
elif attribute_name == "state":
return self._state
elif attribute_name == "hover":
return self._hover
elif attribute_name == "command":
return self._command
else:
return super().cget(attribute_name)
def _set_cursor(self):
if self._cursor_manipulation_enabled:
if self._state == tkinter.DISABLED:
if sys.platform == "darwin":
self._canvas.configure(cursor="arrow")
if self._text_label is not None:
self._text_label.configure(cursor="arrow")
elif sys.platform.startswith("win"):
self._canvas.configure(cursor="arrow")
if self._text_label is not None:
self._text_label.configure(cursor="arrow")
elif self._state == tkinter.NORMAL:
if sys.platform == "darwin":
self._canvas.configure(cursor="pointinghand")
if self._text_label is not None:
self._text_label.configure(cursor="pointinghand")
elif sys.platform.startswith("win"):
self._canvas.configure(cursor="hand2")
if self._text_label is not None:
self._text_label.configure(cursor="hand2")
def _on_enter(self, event=0):
if self._hover is True and self._state == tkinter.NORMAL:
self._canvas.itemconfig("border_parts",
fill=self._apply_appearance_mode(self._hover_color),
outline=self._apply_appearance_mode(self._hover_color))
def _on_leave(self, event=0):
if self._check_state is True:
self._canvas.itemconfig("border_parts",
fill=self._apply_appearance_mode(self._fg_color),
outline=self._apply_appearance_mode(self._fg_color))
else:
self._canvas.itemconfig("border_parts",
fill=self._apply_appearance_mode(self._border_color),
outline=self._apply_appearance_mode(self._border_color))
def _variable_callback(self, var_name, index, mode):
if not self._variable_callback_blocked:
if self._variable.get() == self._value:
self.select(from_variable_callback=True)
else:
self.deselect(from_variable_callback=True)
def invoke(self, event=0):
if self._state == tkinter.NORMAL:
if self._check_state is False:
self._check_state = True
self.select()
if self._command is not None:
self._command()
def select(self, from_variable_callback=False):
self._check_state = True
self._draw()
if self._variable is not None and not from_variable_callback:
self._variable_callback_blocked = True
self._variable.set(self._value)
self._variable_callback_blocked = False
def deselect(self, from_variable_callback=False):
self._check_state = False
self._draw()
if self._variable is not None and not from_variable_callback:
self._variable_callback_blocked = True
self._variable.set("")
self._variable_callback_blocked = False
def bind(self, sequence: str = None, command: Callable = None, add: Union[str, bool] = True):
""" called on the tkinter.Canvas """
if not (add == "+" or add is True):
raise ValueError("'add' argument can only be '+' or True to preserve internal callbacks")
self._canvas.bind(sequence, command, add=True)
self._text_label.bind(sequence, command, add=True)
def unbind(self, sequence: str = None, funcid: str = None):
""" called on the tkinter.Label and tkinter.Canvas """
if funcid is not None:
raise ValueError("'funcid' argument can only be None, because there is a bug in" +
" tkinter and its not clear whether the internal callbacks will be unbinded or not")
self._canvas.unbind(sequence, None)
self._text_label.unbind(sequence, None)
self._create_bindings(sequence=sequence) # restore internal callbacks for sequence
def focus(self):
return self._text_label.focus()
def focus_set(self):
return self._text_label.focus_set()
def focus_force(self):
return self._text_label.focus_force()