import tkinter
import sys
from typing import Union
from .dropdown_menu import DropdownMenu
from .ctk_canvas import CTkCanvas
from ..theme_manager import ThemeManager
from ..settings import Settings
from ..draw_engine import DrawEngine
from .widget_base_class import CTkBaseClass
class CTkComboBox(CTkBaseClass):
def __init__(self, *args,
bg_color=None,
fg_color="default_theme",
border_color="default_theme",
button_color="default_theme",
button_hover_color="default_theme",
dropdown_color="default_theme",
dropdown_hover_color="default_theme",
dropdown_text_color="default_theme",
variable=None,
values=None,
command=None,
width=140,
height=28,
corner_radius="default_theme",
border_width="default_theme",
text_font="default_theme",
text_color="default_theme",
text_color_disabled="default_theme",
hover=True,
state=tkinter.NORMAL,
**kwargs):
# transfer basic functionality (bg_color, size, _appearance_mode, scaling) to CTkBaseClass
super().__init__(*args, bg_color=bg_color, width=width, height=height, **kwargs)
# color variables
self.fg_color = ThemeManager.theme["color"]["entry"] if fg_color == "default_theme" else fg_color
self.border_color = ThemeManager.theme["color"]["combobox_border"] if border_color == "default_theme" else border_color
self.button_color = ThemeManager.theme["color"]["combobox_border"] if button_color == "default_theme" else button_color
self.button_hover_color = ThemeManager.theme["color"]["combobox_button_hover"] if button_hover_color == "default_theme" else button_hover_color
self.dropdown_color = ThemeManager.theme["color"]["dropdown_color"] if dropdown_color == "default_theme" else dropdown_color
self.dropdown_hover_color = ThemeManager.theme["color"]["dropdown_hover"] if dropdown_hover_color == "default_theme" else dropdown_hover_color
self.dropdown_text_color = ThemeManager.theme["color"]["dropdown_text"] if dropdown_text_color == "default_theme" else dropdown_text_color
# shape
self.corner_radius = ThemeManager.theme["shape"]["button_corner_radius"] if corner_radius == "default_theme" else corner_radius
self.border_width = ThemeManager.theme["shape"]["entry_border_width"] if border_width == "default_theme" else border_width
# text and font
self.text_label = None
self.text_color = ThemeManager.theme["color"]["text"] if text_color == "default_theme" else text_color
self.text_color_disabled = ThemeManager.theme["color"]["text_button_disabled"] if text_color_disabled == "default_theme" else text_color_disabled
self.text_font = (ThemeManager.theme["text"]["font"], ThemeManager.theme["text"]["size"]) if text_font == "default_theme" else text_font
# callback and hover functionality
self.function = command
self.variable = variable
self.variable_callback_blocked = False
self.variable_callback_name = None
self.state = state
self.hover = hover
self.click_animation_running = False
if values is None:
self.values = ["CTkComboBox"]
else:
self.values = values
if len(self.values) > 0:
self.current_value = self.values[0]
else:
self.current_value = "CTkComboBox"
self.dropdown_menu: Union[DropdownMenu, None] = None
# 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.canvas.grid(row=0, column=0, rowspan=1, columnspan=1, sticky="nsew")
self.draw_engine = DrawEngine(self.canvas)
self.entry = tkinter.Entry(master=self,
width=0,
bd=0,
highlightthickness=0,
font=self.apply_font_scaling(self.text_font))
left_section_width = self._current_width - self._current_height
self.entry.grid(row=0, column=0, rowspan=1, columnspan=1, sticky="w",
padx=(self.apply_widget_scaling(max(self.corner_radius, 3)),
self.apply_widget_scaling(max(self._current_width - left_section_width + 3, 3))))
self.draw() # initial draw
# event bindings
self.canvas.tag_bind("right_parts", "<Enter>", self.on_enter)
self.canvas.tag_bind("dropdown_arrow", "<Enter>", self.on_enter)
self.canvas.tag_bind("right_parts", "<Leave>", self.on_leave)
self.canvas.tag_bind("dropdown_arrow", "<Leave>", self.on_leave)
self.canvas.tag_bind("right_parts", "<Button-1>", self.clicked)
self.canvas.tag_bind("dropdown_arrow", "<Button-1>", self.clicked)
self.bind('<Configure>', self.update_dimensions_event)
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)
def set_scaling(self, *args, **kwargs):
super().set_scaling(*args, **kwargs)
if self.text_label is not None:
self.text_label.destroy()
self.text_label = None
self.canvas.configure(width=self.apply_widget_scaling(self._desired_width),
height=self.apply_widget_scaling(self._desired_height))
self.draw()
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 draw(self, no_color_updates=False):
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),
self.apply_widget_scaling(self.border_width),
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 self.current_value is not None:
self.entry.delete(0, tkinter.END)
self.entry.insert(0, self.current_value)
if no_color_updates is False or requires_recoloring or requires_recoloring_2:
self.canvas.configure(bg=ThemeManager.single_color(self.bg_color, self._appearance_mode))
self.canvas.itemconfig("inner_parts_left",
outline=ThemeManager.single_color(self.fg_color, self._appearance_mode),
fill=ThemeManager.single_color(self.fg_color, self._appearance_mode))
self.canvas.itemconfig("border_parts_left",
outline=ThemeManager.single_color(self.border_color, self._appearance_mode),
fill=ThemeManager.single_color(self.border_color, self._appearance_mode))
self.canvas.itemconfig("inner_parts_right",
outline=ThemeManager.single_color(self.border_color, self._appearance_mode),
fill=ThemeManager.single_color(self.border_color, self._appearance_mode))
self.canvas.itemconfig("border_parts_right",
outline=ThemeManager.single_color(self.border_color, self._appearance_mode),
fill=ThemeManager.single_color(self.border_color, self._appearance_mode))
self.entry.configure(fg=ThemeManager.single_color(self.text_color, self._appearance_mode))
self.entry.configure(bg=ThemeManager.single_color(self.fg_color, self._appearance_mode))
if self.state == tkinter.DISABLED:
self.entry.configure(fg=(ThemeManager.single_color(self.text_color_disabled, self._appearance_mode)))
else:
self.entry.configure(fg=ThemeManager.single_color(self.text_color, self._appearance_mode))
def open_dropdown_menu(self):
self.dropdown_menu = DropdownMenu(x_position=self.winfo_rootx(),
y_position=self.winfo_rooty() + self.apply_widget_scaling(self._current_height + 4),
width=self._current_width,
values=self.values,
command=self.set,
fg_color=self.dropdown_color,
button_hover_color=self.dropdown_hover_color,
button_color=self.dropdown_color,
text_color=self.dropdown_text_color)
def configure(self, *args, **kwargs):
require_redraw = False # some attribute changes require a call of self.draw() at the end
if "state" in kwargs:
self.state = kwargs["state"]
self.set_cursor()
require_redraw = True
del kwargs["state"]
if "fg_color" in kwargs:
self.fg_color = kwargs["fg_color"]
require_redraw = True
del kwargs["fg_color"]
if "bg_color" in kwargs:
if kwargs["bg_color"] is None:
self.bg_color = self.detect_color_of_master()
else:
self.bg_color = kwargs["bg_color"]
require_redraw = True
del kwargs["bg_color"]
if "button_color" in kwargs:
self.button_color = kwargs["button_color"]
require_redraw = True
del kwargs["button_color"]
if "button_hover_color" in kwargs:
self.button_hover_color = kwargs["button_hover_color"]
require_redraw = True
del kwargs["button_hover_color"]
if "text_color" in kwargs:
self.text_color = kwargs["text_color"]
require_redraw = True
del kwargs["text_color"]
if "command" in kwargs:
self.function = kwargs["command"]
del kwargs["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["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
del kwargs["variable"]
if "width" in kwargs:
self.set_dimensions(width=kwargs["width"])
del kwargs["width"]
if "height" in kwargs:
self.set_dimensions(height=kwargs["height"])
del kwargs["height"]
super().configure(*args, **kwargs)
if require_redraw:
self.draw()
def on_enter(self, event=0):
if self.hover is True and self.state == tkinter.NORMAL:
if sys.platform == "darwin" and len(self.values) > 0 and Settings.cursor_manipulation_enabled:
self.canvas.configure(cursor="pointinghand")
elif sys.platform.startswith("win") and len(self.values) > 0 and Settings.cursor_manipulation_enabled:
self.canvas.configure(cursor="hand2")
# set color of inner button parts to hover color
self.canvas.itemconfig("inner_parts_right",
outline=ThemeManager.single_color(self.button_hover_color, self._appearance_mode),
fill=ThemeManager.single_color(self.button_hover_color, self._appearance_mode))
self.canvas.itemconfig("border_parts_right",
outline=ThemeManager.single_color(self.button_hover_color, self._appearance_mode),
fill=ThemeManager.single_color(self.button_hover_color, self._appearance_mode))
def on_leave(self, event=0):
self.click_animation_running = False
if self.hover is True:
if sys.platform == "darwin" and len(self.values) > 0 and Settings.cursor_manipulation_enabled:
self.canvas.configure(cursor="arrow")
elif sys.platform.startswith("win") and len(self.values) > 0 and Settings.cursor_manipulation_enabled:
self.canvas.configure(cursor="arrow")
# set color of inner button parts
self.canvas.itemconfig("inner_parts_right",
outline=ThemeManager.single_color(self.button_color, self._appearance_mode),
fill=ThemeManager.single_color(self.button_color, self._appearance_mode))
self.canvas.itemconfig("border_parts_right",
outline=ThemeManager.single_color(self.button_color, self._appearance_mode),
fill=ThemeManager.single_color(self.button_color, self._appearance_mode))
def click_animation(self):
if self.click_animation_running:
self.on_enter()
def variable_callback(self, var_name, index, mode):
if not self.variable_callback_blocked:
self.set(self.variable.get(), from_variable_callback=True)
def set(self, value: str, from_variable_callback: bool = False):
self.current_value = value
self.entry.delete(0, tkinter.END)
self.entry.insert(0, self.current_value)
if self.variable is not None and not from_variable_callback:
self.variable_callback_blocked = True
self.variable.set(self.current_value)
self.variable_callback_blocked = False
if not from_variable_callback:
if self.function is not None:
self.function(self.current_value)
def get(self) -> str:
return self.current_value
def clicked(self, event=0):
if self.state is not tkinter.DISABLED:
self.open_dropdown_menu()
# click animation: change color with .on_leave() and back to normal after 100ms with click_animation()
self.on_leave()
self.click_animation_running = True
self.after(100, self.click_animation)