import tkinter
import copy
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 .core_widget_classes import DropdownMenu
from .font import CTkFont
class CTkOptionMenu(CTkBaseClass):
"""
Optionmenu with rounded corners, dropdown menu, variable support, command.
For detailed information check out the documentation.
"""
def __init__(self,
master: any,
width: int = 140,
height: int = 28,
corner_radius: Optional[Union[int]] = None,
bg_color: Union[str, Tuple[str, str]] = "transparent",
fg_color: Optional[Union[str, Tuple[str, str]]] = None,
button_color: Optional[Union[str, Tuple[str, str]]] = None,
button_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,
dropdown_fg_color: Optional[Union[str, Tuple[str, str]]] = None,
dropdown_hover_color: Optional[Union[str, Tuple[str, str]]] = None,
dropdown_text_color: Optional[Union[str, Tuple[str, str]]] = None,
font: Optional[Union[tuple, CTkFont]] = None,
dropdown_font: Optional[Union[tuple, CTkFont]] = None,
values: Optional[list] = None,
variable: Union[tkinter.Variable, None] = None,
state: str = tkinter.NORMAL,
hover: bool = True,
command: Union[Callable[[str], None], None] = None,
dynamic_resizing: bool = True,
anchor: str = "w",
**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)
# color variables
self._fg_color = ThemeManager.theme["CTkOptionMenu"]["fg_color"] if fg_color is None else self._check_color_type(fg_color)
self._button_color = ThemeManager.theme["CTkOptionMenu"]["button_color"] if button_color is None else self._check_color_type(button_color)
self._button_hover_color = ThemeManager.theme["CTkOptionMenu"]["button_hover_color"] if button_hover_color is None else self._check_color_type(button_hover_color)
# shape
self._corner_radius = ThemeManager.theme["CTkOptionMenu"]["corner_radius"] if corner_radius is None else corner_radius
# text and font
self._text_color = ThemeManager.theme["CTkOptionMenu"]["text_color"] if text_color is None else self._check_color_type(text_color)
self._text_color_disabled = ThemeManager.theme["CTkOptionMenu"]["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 hover functionality
self._command = command
self._variable = variable
self._variable_callback_blocked: bool = False
self._variable_callback_name: Union[str, None] = None
self._state = state
self._hover = hover
self._dynamic_resizing = dynamic_resizing
if values is None:
self._values = ["CTkOptionMenu"]
else:
self._values = values
if len(self._values) > 0:
self._current_value = self._values[0]
else:
self._current_value = "CTkOptionMenu"
self._dropdown_menu = DropdownMenu(master=self,
values=self._values,
command=self._dropdown_callback,
fg_color=dropdown_fg_color,
hover_color=dropdown_hover_color,
text_color=dropdown_text_color,
font=dropdown_font)
# configure grid system (1x1)
self.grid_rowconfigure(0, weight=1)
self.grid_columnconfigure(0, weight=1)
self._canvas = CTkCanvas(master=self,
highlightthickness=0,
width=self._apply_widget_scaling(self._desired_width),
height=self._apply_widget_scaling(self._desired_height))
self._draw_engine = DrawEngine(self._canvas)
self._text_label = tkinter.Label(master=self,
font=self._apply_font_scaling(self._font),
anchor=anchor,
padx=0,
pady=0,
borderwidth=1,
text=self._current_value)
if self._cursor_manipulation_enabled:
if sys.platform == "darwin":
self.configure(cursor="pointinghand")
elif sys.platform.startswith("win"):
self.configure(cursor="hand2")
self._create_grid()
if not self._dynamic_resizing:
self.grid_propagate(0)
self._create_bindings()
self._draw() # initial draw
if self._variable is not None:
self._variable_callback_name = self._variable.trace_add("write", self._variable_callback)
self._current_value = self._variable.get()
self._text_label.configure(text=self._current_value)
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._clicked)
self._text_label.bind("<Button-1>", self._clicked)
def _create_grid(self):
self._canvas.grid(row=0, column=0, sticky="nsew")
left_section_width = self._current_width - self._current_height
self._text_label.grid(row=0, column=0, sticky="ew",
padx=(max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(3)),
max(self._apply_widget_scaling(self._current_width - left_section_width + 3), self._apply_widget_scaling(3))))
def _set_scaling(self, *args, **kwargs):
super()._set_scaling(*args, **kwargs)
# change label font size and grid padding
self._text_label.configure(font=self._apply_font_scaling(self._font))
self._canvas.configure(width=self._apply_widget_scaling(self._desired_width),
height=self._apply_widget_scaling(self._desired_height))
self._create_grid()
self._draw(no_color_updates=True)
def _set_dimensions(self, width: int = None, height: int = None):
super()._set_dimensions(width, height)
self._canvas.configure(width=self._apply_widget_scaling(self._desired_width),
height=self._apply_widget_scaling(self._desired_height))
self._draw()
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._canvas.grid_forget()
self._canvas.grid(row=0, column=0, sticky="nsew")
def destroy(self):
if self._variable is not None: # remove old callback
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)
left_section_width = self._current_width - self._current_height
requires_recoloring = self._draw_engine.draw_rounded_rect_with_border_vertical_split(self._apply_widget_scaling(self._current_width),
self._apply_widget_scaling(self._current_height),
self._apply_widget_scaling(self._corner_radius),
0,
self._apply_widget_scaling(left_section_width))
requires_recoloring_2 = self._draw_engine.draw_dropdown_arrow(self._apply_widget_scaling(self._current_width - (self._current_height / 2)),
self._apply_widget_scaling(self._current_height / 2),
self._apply_widget_scaling(self._current_height / 3))
if no_color_updates is False or requires_recoloring or requires_recoloring_2:
self._canvas.configure(bg=self._apply_appearance_mode(self._bg_color))
self._canvas.itemconfig("inner_parts_left",
outline=self._apply_appearance_mode(self._fg_color),
fill=self._apply_appearance_mode(self._fg_color))
self._canvas.itemconfig("inner_parts_right",
outline=self._apply_appearance_mode(self._button_color),
fill=self._apply_appearance_mode(self._button_color))
self._text_label.configure(fg=self._apply_appearance_mode(self._text_color))
if self._state == tkinter.DISABLED:
self._text_label.configure(fg=(self._apply_appearance_mode(self._text_color_disabled)))
self._canvas.itemconfig("dropdown_arrow",
fill=self._apply_appearance_mode(self._text_color_disabled))
else:
self._text_label.configure(fg=self._apply_appearance_mode(self._text_color))
self._canvas.itemconfig("dropdown_arrow",
fill=self._apply_appearance_mode(self._text_color))
self._text_label.configure(bg=self._apply_appearance_mode(self._fg_color))
self._canvas.update_idletasks()
def configure(self, require_redraw=False, **kwargs):
if "corner_radius" in kwargs:
self._corner_radius = kwargs.pop("corner_radius")
self._create_grid()
require_redraw = True
if "fg_color" in kwargs:
self._fg_color = self._check_color_type(kwargs.pop("fg_color"))
require_redraw = True
if "button_color" in kwargs:
self._button_color = self._check_color_type(kwargs.pop("button_color"))
require_redraw = True
if "button_hover_color" in kwargs:
self._button_hover_color = self._check_color_type(kwargs.pop("button_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 "dropdown_fg_color" in kwargs:
self._dropdown_menu.configure(fg_color=kwargs.pop("dropdown_fg_color"))
if "dropdown_hover_color" in kwargs:
self._dropdown_menu.configure(hover_color=kwargs.pop("dropdown_hover_color"))
if "dropdown_text_color" in kwargs:
self._dropdown_menu.configure(text_color=kwargs.pop("dropdown_text_color"))
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 "dropdown_font" in kwargs:
self._dropdown_menu.configure(font=kwargs.pop("dropdown_font"))
if "values" in kwargs:
self._values = kwargs.pop("values")
self._dropdown_menu.configure(values=self._values)
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._current_value = self._variable.get()
self._text_label.configure(text=self._current_value)
else:
self._variable = None
if "state" in kwargs:
self._state = kwargs.pop("state")
require_redraw = True
if "hover" in kwargs:
self._hover = kwargs.pop("hover")
if "command" in kwargs:
self._command = kwargs.pop("command")
if "dynamic_resizing" in kwargs:
self._dynamic_resizing = kwargs.pop("dynamic_resizing")
if not self._dynamic_resizing:
self.grid_propagate(0)
else:
self.grid_propagate(1)
if "anchor" in kwargs:
self._text_label.configure(anchor=kwargs.pop("anchor"))
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 == "fg_color":
return self._fg_color
elif attribute_name == "button_color":
return self._button_color
elif attribute_name == "button_hover_color":
return self._button_hover_color
elif attribute_name == "text_color":
return self._text_color
elif attribute_name == "text_color_disabled":
return self._text_color_disabled
elif attribute_name == "dropdown_fg_color":
return self._dropdown_menu.cget("fg_color")
elif attribute_name == "dropdown_hover_color":
return self._dropdown_menu.cget("hover_color")
elif attribute_name == "dropdown_text_color":
return self._dropdown_menu.cget("text_color")
elif attribute_name == "font":
return self._font
elif attribute_name == "dropdown_font":
return self._dropdown_menu.cget("font")
elif attribute_name == "values":
return copy.copy(self._values)
elif attribute_name == "variable":
return self._variable
elif attribute_name == "state":
return self._state
elif attribute_name == "hover":
return self._hover
elif attribute_name == "command":
return self._command
elif attribute_name == "dynamic_resizing":
return self._dynamic_resizing
elif attribute_name == "anchor":
return self._text_label.cget("anchor")
else:
return super().cget(attribute_name)
def _open_dropdown_menu(self):
self._dropdown_menu.open(self.winfo_rootx(),
self.winfo_rooty() + self._apply_widget_scaling(self._current_height + 0))
def _on_enter(self, event=0):
if self._hover is True and self._state == tkinter.NORMAL and len(self._values) > 0:
# set color of inner button parts to hover color
self._canvas.itemconfig("inner_parts_right",
outline=self._apply_appearance_mode(self._button_hover_color),
fill=self._apply_appearance_mode(self._button_hover_color))
def _on_leave(self, event=0):
# set color of inner button parts
self._canvas.itemconfig("inner_parts_right",
outline=self._apply_appearance_mode(self._button_color),
fill=self._apply_appearance_mode(self._button_color))
def _variable_callback(self, var_name, index, mode):
if not self._variable_callback_blocked:
self._current_value = self._variable.get()
self._text_label.configure(text=self._current_value)
def _dropdown_callback(self, value: str):
self._current_value = value
self._text_label.configure(text=self._current_value)
if self._variable is not None:
self._variable_callback_blocked = True
self._variable.set(self._current_value)
self._variable_callback_blocked = False
if self._command is not None:
self._command(self._current_value)
def set(self, value: str):
self._current_value = value
self._text_label.configure(text=self._current_value)
if self._variable is not None:
self._variable_callback_blocked = True
self._variable.set(self._current_value)
self._variable_callback_blocked = False
def get(self) -> str:
return self._current_value
def _clicked(self, event=0):
if self._state is not tkinter.DISABLED and len(self._values) > 0:
self._open_dropdown_menu()
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()