CustomTkinter/customtkinter/customtkinter_frame.py

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import tkinter
import sys
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from .customtkinter_tk import CTk
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from .appearance_mode_tracker import AppearanceModeTracker
from .customtkinter_color_manager import CTkColorManager
class CTkFrame(tkinter.Frame):
def __init__(self, *args,
bg_color=None,
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fg_color="CTkColorManager",
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corner_radius=10,
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width=200,
height=200,
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**kwargs):
super().__init__(*args, **kwargs)
# overwrite configure methods of master when master is tkinter widget, so that bg changes get applied on child CTk widget too
if isinstance(self.master, (tkinter.Tk, tkinter.Frame)) and not isinstance(self.master, (CTk, CTkFrame)):
master_old_configure = self.master.config
def new_configure(*args, **kwargs):
if "bg" in kwargs:
self.configure(bg_color=kwargs["bg"])
elif "background" in kwargs:
self.configure(bg_color=kwargs["background"])
# args[0] is dict when attribute gets changed by widget[<attribut>] syntax
elif len(args) > 0 and type(args[0]) == dict:
if "bg" in args[0]:
self.configure(bg_color=args[0]["bg"])
elif "background" in args[0]:
self.configure(bg_color=args[0]["background"])
master_old_configure(*args, **kwargs)
self.master.config = new_configure
self.master.configure = new_configure
AppearanceModeTracker.add(self.change_appearance_mode, self)
self.appearance_mode = AppearanceModeTracker.get_mode() # 0: "Light" 1: "Dark"
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self.bg_color = self.detect_color_of_master() if bg_color is None else bg_color
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if fg_color == "CTkColorManager":
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if isinstance(self.master, CTkFrame):
if self.master.fg_color == CTkColorManager.FRAME:
self.fg_color = CTkColorManager.FRAME_2
else:
self.fg_color = CTkColorManager.FRAME
else:
self.fg_color = CTkColorManager.FRAME
else:
self.fg_color = fg_color
self.width = width
self.height = height
self.corner_radius = self.calc_optimal_corner_radius(corner_radius) # optimise for less artifacts
if self.corner_radius * 2 > self.height:
self.corner_radius = self.height / 2
elif self.corner_radius * 2 > self.width:
self.corner_radius = self.width / 2
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self.configure(width=self.width, height=self.height)
self.canvas = tkinter.Canvas(master=self,
highlightthicknes=0,
width=self.width,
height=self.height)
self.canvas.place(x=0, y=0)
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if type(self.bg_color) == tuple:
self.canvas.configure(bg=self.bg_color[self.appearance_mode])
else:
self.canvas.configure(bg=self.bg_color)
self.fg_parts = []
self.bind('<Configure>', self.update_dimensions)
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self.draw()
def destroy(self):
AppearanceModeTracker.remove(self.change_appearance_mode)
super().destroy()
def detect_color_of_master(self):
if isinstance(self.master, CTkFrame):
return self.master.fg_color
else:
return self.master.cget("bg")
@staticmethod
def calc_optimal_corner_radius(user_corner_radius):
if sys.platform == "darwin":
return user_corner_radius # on macOS just use given value (canvas has Antialiasing)
else:
user_corner_radius = 0.5 * round(user_corner_radius / 0.5) # round to 0.5 steps
# make sure the value is always with .5 at the end for smoother corners
if user_corner_radius == 0:
return 0
elif user_corner_radius % 1 == 0:
return user_corner_radius + 0.5
else:
return user_corner_radius
def update_dimensions(self, event):
# only redraw if dimensions changed (for performance)
if self.width != event.width or self.height != event.height:
self.width = event.width
self.height = event.height
self.canvas.config(width=self.width, height=self.height)
self.draw()
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def draw(self):
for part in self.fg_parts:
self.canvas.delete(part)
self.fg_parts = []
if sys.platform == "darwin":
oval_size_corr_br = 0
else:
oval_size_corr_br = -1 # correct canvas oval draw size on bottom and right by 1 pixel (too large otherwise)
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# frame_border
self.fg_parts.append(self.canvas.create_oval(0,
0,
self.corner_radius*2 + oval_size_corr_br,
self.corner_radius*2 + oval_size_corr_br))
self.fg_parts.append(self.canvas.create_oval(self.width-self.corner_radius*2,
0,
self.width + oval_size_corr_br,
self.corner_radius*2 + oval_size_corr_br))
self.fg_parts.append(self.canvas.create_oval(0,
self.height-self.corner_radius*2,
self.corner_radius*2 + oval_size_corr_br,
self.height + oval_size_corr_br))
self.fg_parts.append(self.canvas.create_oval(self.width-self.corner_radius*2,
self.height-self.corner_radius*2,
self.width + oval_size_corr_br,
self.height + oval_size_corr_br))
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self.fg_parts.append(self.canvas.create_rectangle(0, self.corner_radius,
self.width, self.height-self.corner_radius))
self.fg_parts.append(self.canvas.create_rectangle(self.corner_radius, 0,
self.width-self.corner_radius, self.height))
for part in self.fg_parts:
if type(self.fg_color) == tuple:
self.canvas.itemconfig(part, fill=self.fg_color[self.appearance_mode], width=0)
else:
self.canvas.itemconfig(part, fill=self.fg_color, width=0)
if type(self.bg_color) == tuple:
self.canvas.configure(bg=self.bg_color[self.appearance_mode])
else:
self.canvas.configure(bg=self.bg_color)
for part in self.fg_parts:
self.canvas.tag_lower(part)
def config(self, *args, **kwargs):
self.configure(*args, **kwargs)
def configure(self, *args, **kwargs):
require_redraw = False # some attribute changes require a call of self.draw() at the end
if "fg_color" in kwargs:
self.fg_color = kwargs["fg_color"]
require_redraw = True
del kwargs["fg_color"]
# check if CTk widgets are children of the frame and change their bg_color to new frame fg_color
from .customtkinter_slider import CTkSlider
from .customtkinter_progressbar import CTkProgressBar
from .customtkinter_label import CTkLabel
from .customtkinter_entry import CTkEntry
from .customtkinter_checkbox import CTkCheckBox
from .customtkinter_button import CTkButton
for child in self.winfo_children():
if isinstance(child, (CTkButton, CTkLabel, CTkSlider, CTkCheckBox, CTkEntry, CTkProgressBar, CTkFrame)):
child.configure(bg_color=self.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 "corner_radius" in kwargs:
self.corner_radius = kwargs["corner_radius"]
require_redraw = True
del kwargs["corner_radius"]
super().configure(*args, **kwargs)
if require_redraw:
self.draw()
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def change_appearance_mode(self, mode_string):
if mode_string.lower() == "dark":
self.appearance_mode = 1
elif mode_string.lower() == "light":
self.appearance_mode = 0
if isinstance(self.master, CTkFrame):
self.bg_color = self.master.fg_color
else:
self.bg_color = self.master.cget("bg")
self.draw()