CustomTkinter/customtkinter/customtkinter_label.py

239 lines
9.4 KiB
Python

import tkinter
import sys
from .customtkinter_tk import CTk
from .customtkinter_frame import CTkFrame
from .appearance_mode_tracker import AppearanceModeTracker
from .customtkinter_color_manager import CTkColorManager
class CTkLabel(tkinter.Frame):
def __init__(self, *args,
master=None,
bg_color=None,
fg_color="CTkColorManager",
text_color="CTkColorManager",
corner_radius=8,
width=120,
height=25,
text="CTkLabel",
text_font=None,
**kwargs):
if master is None:
super().__init__(*args)
else:
super().__init__(*args, master=master)
# 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"
self.bg_color = self.detect_color_of_master() if bg_color is None else bg_color
self.fg_color = CTkColorManager.LABEL_BG if fg_color == "CTkColorManager" else fg_color
self.text_color = CTkColorManager.TEXT if text_color == "CTkColorManager" else text_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
self.text = text
if text_font is None:
if sys.platform == "darwin": # macOS
self.text_font = ("Avenir", 13)
elif "win" in sys.platform: # Windows
self.text_font = ("Century Gothic", 10)
else:
self.text_font = ("TkDefaultFont", 10)
else:
self.text_font = text_font
self.canvas = tkinter.Canvas(master=self,
highlightthicknes=0,
width=self.width,
height=self.height)
self.canvas.place(relx=0, rely=0, anchor=tkinter.NW)
self.text_label = tkinter.Label(master=self,
highlightthicknes=0,
bd=0,
text=self.text,
font=self.text_font,
**kwargs)
self.text_label.place(relx=0.5, rely=0.5, anchor=tkinter.CENTER)
self.fg_parts = []
super().configure(width=self.width, height=self.height)
self.bind('<Configure>', self.update_dimensions)
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()
def draw(self):
self.canvas.delete("all")
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)
# 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))
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))
if type(self.bg_color) == tuple:
self.canvas.configure(bg=self.bg_color[self.appearance_mode])
else:
self.canvas.configure(bg=self.bg_color)
if self.fg_color is None:
new_fg_color = self.bg_color
else:
new_fg_color = self.fg_color
for part in self.fg_parts:
if type(new_fg_color) == tuple:
self.canvas.itemconfig(part, fill=new_fg_color[self.appearance_mode], width=0)
else:
self.canvas.itemconfig(part, fill=new_fg_color, width=0)
if type(self.text_color) == tuple:
self.text_label.configure(fg=self.text_color[self.appearance_mode])
else:
self.text_label.configure(fg=self.text_color)
if type(new_fg_color) == tuple:
self.text_label.configure(bg=new_fg_color[self.appearance_mode])
else:
self.text_label.configure(bg=new_fg_color)
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 "text" in kwargs:
self.set_text(kwargs["text"])
del kwargs["text"]
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 "text_color" in kwargs:
self.text_color = kwargs["text_color"]
require_redraw = True
del kwargs["text_color"]
self.text_label.configure(*args, **kwargs)
if require_redraw:
self.draw()
def set_text(self, text):
self.text = text
self.text_label.configure(text=self.text, width=len(self.text))
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, CTk)):
self.bg_color = self.master.fg_color
else:
self.bg_color = self.master.cget("bg")
self.draw()