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 == "": self._canvas.bind("", self._on_enter) self._text_label.bind("", self._on_enter) if sequence is None or sequence == "": self._canvas.bind("", self._on_leave) self._text_label.bind("", self._on_leave) if sequence is None or sequence == "": self._canvas.bind("", self._clicked) self._text_label.bind("", 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 "dropdown_color" in kwargs: self._dropdown_menu.configure(fg_color=kwargs.pop("dropdown_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 "command" in kwargs: self._command = kwargs.pop("command") 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 "values" in kwargs: self._values = kwargs.pop("values") self._dropdown_menu.configure(values=self._values) if "dropdown_font" in kwargs: self._dropdown_menu.configure(font=kwargs.pop("dropdown_font")) if "hover" in kwargs: self._hover = kwargs.pop("hover") if "state" in kwargs: self._state = kwargs.pop("state") require_redraw = True 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()