CustomTkinter/customtkinter/customtkinter_button.py
2022-03-10 02:12:30 +01:00

412 lines
18 KiB
Python

import tkinter
import sys
from .customtkinter_tk import CTk
from .customtkinter_frame import CTkFrame
from .appearance_mode_tracker import AppearanceModeTracker
from .customtkinter_theme_manager import CTkThemeManager
from .customtkinter_canvas import CTkCanvas
from .customtkinter_settings import CTkSettings
from .customtkinter_draw_engine import CTkDrawEngine
class CTkButton(tkinter.Frame):
""" tkinter custom button with border, rounded corners and hover effect """
def __init__(self, *args,
bg_color=None,
fg_color="default_theme",
hover_color="default_theme",
border_color="default_theme",
border_width="default_theme",
command=None,
textvariable=None,
width=120,
height=30,
corner_radius="default_theme",
text_font="default_theme",
text_color="default_theme",
text_color_disabled="default_theme",
text="CTkButton",
hover=True,
image=None,
compound=tkinter.LEFT,
state=tkinter.NORMAL,
**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[<attribute>] 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.set_appearance_mode, self)
self.appearance_mode = AppearanceModeTracker.get_mode() # 0: "Light" 1: "Dark"
self.configure_basic_grid()
# color variables
self.bg_color = self.detect_color_of_master() if bg_color is None else bg_color
self.fg_color = CTkThemeManager.theme["color"]["button"] if fg_color == "default_theme" else fg_color
self.hover_color = CTkThemeManager.theme["color"]["button_hover"] if hover_color == "default_theme" else hover_color
self.border_color = CTkThemeManager.theme["color"]["button_border"] if border_color == "default_theme" else border_color
# shape and size
self.width = width
self.height = height
self.configure(width=self.width, height=self.height)
self.corner_radius = CTkThemeManager.theme["shape"]["button_corner_radius"] if corner_radius == "default_theme" else corner_radius
self.border_width = CTkThemeManager.theme["shape"]["button_border_width"] if border_width == "default_theme" else border_width
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
if self.corner_radius >= self.border_width:
self.inner_corner_radius = self.corner_radius - self.border_width
else:
self.inner_corner_radius = 0
# text and font and image
self.image = image
self.image_label = None
self.text = text
self.text_label = None
self.text_color = CTkThemeManager.theme["color"]["text"] if text_color == "default_theme" else text_color
self.text_color_disabled = CTkThemeManager.theme["color"]["text_button_disabled"] if text_color_disabled == "default_theme" else text_color_disabled
self.text_font = (CTkThemeManager.theme["text"]["font"], CTkThemeManager.theme["text"]["size"]) if text_font == "default_theme" else text_font
# callback and hover functionality
self.function = command
self.textvariable = textvariable
self.state = state
self.hover = hover
self.compound = compound
self.click_animation_running = False
self.canvas = CTkCanvas(master=self,
highlightthickness=0,
width=self.width,
height=self.height)
self.canvas.grid(row=0, column=0, rowspan=2, columnspan=2, sticky="nsew")
self.draw_engine = CTkDrawEngine(self.canvas, CTkSettings.preferred_drawing_method)
# event bindings
self.canvas.bind("<Enter>", self.on_enter)
self.canvas.bind("<Leave>", self.on_leave)
self.canvas.bind("<Button-1>", self.clicked)
self.canvas.bind("<Button-1>", self.clicked)
# Each time an item is resized due to pack position mode, the binding Configure is called on the widget
self.bind('<Configure>', self.update_dimensions)
self.set_cursor()
self.draw() # initial draw
def destroy(self):
AppearanceModeTracker.remove(self.set_appearance_mode)
super().destroy()
def configure_basic_grid(self):
# Configuration of a basic grid (2x2) in which all elements of CTkButtons are centered on one row and one column
self.grid_rowconfigure(0, weight=1)
self.grid_columnconfigure(0, weight=1)
self.grid_rowconfigure(1, weight=1)
self.grid_columnconfigure(1, weight=1)
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(no_color_updates=True) # fast drawing without color changes
def detect_color_of_master(self):
if isinstance(self.master, CTkFrame):
return self.master.fg_color
else:
return self.master.cget("bg")
def draw(self, no_color_updates=False):
requires_recoloring = self.draw_engine.draw_rounded_rect_with_border(self.width, self.height, self.corner_radius, self.border_width)
if no_color_updates is False or requires_recoloring:
self.canvas.configure(bg=CTkThemeManager.single_color(self.bg_color, self.appearance_mode))
# set color for the button border parts (outline)
self.canvas.itemconfig("border_parts",
outline=CTkThemeManager.single_color(self.border_color, self.appearance_mode),
fill=CTkThemeManager.single_color(self.border_color, self.appearance_mode))
# set color for inner button parts
if self.fg_color is None:
self.canvas.itemconfig("inner_parts",
outline=CTkThemeManager.single_color(self.bg_color, self.appearance_mode),
fill=CTkThemeManager.single_color(self.bg_color, self.appearance_mode))
else:
self.canvas.itemconfig("inner_parts",
outline=CTkThemeManager.single_color(self.fg_color, self.appearance_mode),
fill=CTkThemeManager.single_color(self.fg_color, self.appearance_mode))
# create text label if text given
if self.text is not None and self.text != "":
if self.text_label is None:
self.text_label = tkinter.Label(master=self, font=self.text_font, textvariable=self.textvariable)
self.text_label.bind("<Enter>", self.on_enter)
self.text_label.bind("<Leave>", self.on_leave)
self.text_label.bind("<Button-1>", self.clicked)
self.text_label.bind("<Button-1>", self.clicked)
if no_color_updates is False:
# set text_label fg color (text color)
self.text_label.configure(fg=CTkThemeManager.single_color(self.text_color, self.appearance_mode))
if self.state == tkinter.DISABLED:
self.text_label.configure(fg=(CTkThemeManager.single_color(self.text_color_disabled, self.appearance_mode)))
else:
self.text_label.configure(fg=CTkThemeManager.single_color(self.text_color, self.appearance_mode))
if self.fg_color is None:
self.text_label.configure(bg=CTkThemeManager.single_color(self.bg_color, self.appearance_mode))
else:
self.text_label.configure(bg=CTkThemeManager.single_color(self.fg_color, self.appearance_mode))
self.text_label.configure(text=self.text) # set text
else:
# delete text_label if no text given
if self.text_label is not None:
self.text_label.destroy()
self.text_label = None
# create image label if image given
if self.image is not None:
if self.image_label is None:
self.image_label = tkinter.Label(master=self)
self.image_label.bind("<Enter>", self.on_enter)
self.image_label.bind("<Leave>", self.on_leave)
self.image_label.bind("<Button-1>", self.clicked)
self.image_label.bind("<Button-1>", self.clicked)
if no_color_updates is False:
# set image_label bg color (background color of label)
if self.state == tkinter.DISABLED:
self.image_label.configure(bg=CTkThemeManager.multiply_hex_color(CTkThemeManager.single_color(self.fg_color, self.appearance_mode)))
else:
self.image_label.configure(bg=CTkThemeManager.single_color(self.fg_color, self.appearance_mode))
self.image_label.configure(image=self.image) # set image
else:
# delete text_label if no text given
if self.image_label is not None:
self.image_label.destroy()
self.image_label = None
# create grid layout with just an image given
if self.image_label is not None and self.text_label is None:
self.image_label.grid(row=0, column=0, rowspan=2, columnspan=2, sticky="")
# create grid layout with just text given
if self.image_label is None and self.text_label is not None:
self.text_label.grid(row=0, column=0, padx=self.corner_radius, pady=self.border_width, rowspan=2, columnspan=2, sticky="")
# create grid layout of image and text label in 2x2 grid system with given compound
if self.image_label is not None and self.text_label is not None:
if self.compound == tkinter.LEFT or self.compound == "left":
self.image_label.grid(row=0, column=0, padx=self.corner_radius, sticky="e", rowspan=2, columnspan=1)
self.text_label.grid(row=0, column=1, padx=self.corner_radius, sticky="w", rowspan=2, columnspan=1, pady=self.border_width)
elif self.compound == tkinter.TOP or self.compound == "top":
self.image_label.grid(row=0, column=0, padx=self.corner_radius, sticky="s", columnspan=2, rowspan=1)
self.text_label.grid(row=1, column=0, padx=self.corner_radius, sticky="n", columnspan=2, rowspan=1, pady=self.border_width)
elif self.compound == tkinter.RIGHT or self.compound == "right":
self.image_label.grid(row=0, column=1, padx=self.corner_radius, sticky="w", rowspan=2, columnspan=1)
self.text_label.grid(row=0, column=0, padx=self.corner_radius, sticky="e", rowspan=2, columnspan=1, pady=self.border_width)
elif self.compound == tkinter.BOTTOM or self.compound == "bottom":
self.image_label.grid(row=1, column=0, padx=self.corner_radius, sticky="n", columnspan=2, rowspan=1)
self.text_label.grid(row=0, column=0, padx=self.corner_radius, sticky="s", columnspan=2, rowspan=1, pady=self.border_width)
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 "state" in kwargs:
self.state = kwargs["state"]
self.set_cursor()
require_redraw = True
del kwargs["state"]
if "image" in kwargs:
self.set_image(kwargs["image"])
del kwargs["image"]
if "compound" in kwargs:
self.compound = kwargs["compound"]
require_redraw = True
del kwargs["compound"]
if "fg_color" in kwargs:
self.fg_color = kwargs["fg_color"]
require_redraw = True
del kwargs["fg_color"]
if "border_color" in kwargs:
self.border_color = kwargs["border_color"]
require_redraw = True
del kwargs["border_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 "hover_color" in kwargs:
self.hover_color = kwargs["hover_color"]
require_redraw = True
del kwargs["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 "textvariable" in kwargs:
self.textvariable = kwargs["textvariable"]
if self.text_label is not None:
self.text_label.configure(textvariable=self.textvariable)
del kwargs["textvariable"]
super().configure(*args, **kwargs)
if require_redraw:
self.draw()
def set_cursor(self):
if self.state == tkinter.DISABLED:
if sys.platform == "darwin" and self.function is not None and CTkSettings.hand_cursor_enabled:
self.configure(cursor="arrow")
elif sys.platform.startswith("win") and self.function is not None and CTkSettings.hand_cursor_enabled:
self.configure(cursor="arrow")
elif self.state == tkinter.NORMAL:
if sys.platform == "darwin" and self.function is not None and CTkSettings.hand_cursor_enabled:
self.configure(cursor="pointinghand")
elif sys.platform.startswith("win") and self.function is not None and CTkSettings.hand_cursor_enabled:
self.configure(cursor="hand2")
def set_text(self, text):
self.text = text
self.draw()
def set_image(self, image):
self.image = image
self.draw()
def on_enter(self, event=0):
if self.hover is True and self.state == tkinter.NORMAL:
if self.hover_color is None:
inner_parts_color = self.fg_color
else:
inner_parts_color = self.hover_color
# set color of inner button parts to hover color
self.canvas.itemconfig("inner_parts",
outline=CTkThemeManager.single_color(inner_parts_color, self.appearance_mode),
fill=CTkThemeManager.single_color(inner_parts_color, self.appearance_mode))
# set text_label bg color to button hover color
if self.text_label is not None:
self.text_label.configure(bg=CTkThemeManager.single_color(inner_parts_color, self.appearance_mode))
# set image_label bg color to button hover color
if self.image_label is not None:
self.image_label.configure(bg=CTkThemeManager.single_color(inner_parts_color, self.appearance_mode))
def on_leave(self, event=0):
self.click_animation_running = False
if self.hover is True:
if self.fg_color is None:
inner_parts_color = self.bg_color
else:
inner_parts_color = self.fg_color
# set color of inner button parts
self.canvas.itemconfig("inner_parts",
outline=CTkThemeManager.single_color(inner_parts_color, self.appearance_mode),
fill=CTkThemeManager.single_color(inner_parts_color, self.appearance_mode))
# set text_label bg color (label color)
if self.text_label is not None:
self.text_label.configure(bg=CTkThemeManager.single_color(inner_parts_color, self.appearance_mode))
# set image_label bg color (image bg color)
if self.image_label is not None:
self.image_label.configure(bg=CTkThemeManager.single_color(inner_parts_color, self.appearance_mode))
def click_animation(self):
if self.click_animation_running:
self.on_enter()
def clicked(self, event=0):
if self.function is not None:
if self.state is not tkinter.DISABLED:
# 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)
self.function()
def set_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()