CustomTkinter/customtkinter/widgets/ctk_button.py

423 lines
21 KiB
Python

import tkinter
import sys
from typing import Union, Tuple, Callable
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 CTkButton(CTkBaseClass):
"""
Button with rounded corners, border, hover effect, image support, click command and textvariable.
For detailed information check out the documentation.
"""
def __init__(self, *args,
width: int = 140,
height: int = 28,
corner_radius: Union[int, str] = "default_theme",
border_width: Union[int, str] = "default_theme",
bg_color: Union[str, Tuple[str, str], None] = None,
fg_color: Union[str, Tuple[str, str], None] = "default_theme",
hover_color: Union[str, Tuple[str, str]] = "default_theme",
border_color: Union[str, Tuple[str, str]] = "default_theme",
text_color: Union[str, Tuple[str, str]] = "default_theme",
text_color_disabled: Union[str, Tuple[str, str]] = "default_theme",
text: str = "CTkButton",
font: any = "default_theme",
textvariable: tkinter.Variable = None,
image: tkinter.PhotoImage = None,
state: str = "normal",
hover: bool = True,
command: Callable = None,
compound: str = "left",
**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
self._fg_color = ThemeManager.theme["color"]["button"] if fg_color == "default_theme" else fg_color
self._hover_color = ThemeManager.theme["color"]["button_hover"] if hover_color == "default_theme" else hover_color
self._border_color = ThemeManager.theme["color"]["button_border"] if border_color == "default_theme" else border_color
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
# shape
self._corner_radius = ThemeManager.theme["shape"]["button_corner_radius"] if corner_radius == "default_theme" else corner_radius
self._border_width = ThemeManager.theme["shape"]["button_border_width"] if border_width == "default_theme" else border_width
# text, font, image
self._image = image
self._image_label = None
self._text = text
self._text_label = None
self._font = (ThemeManager.theme["text"]["font"], ThemeManager.theme["text"]["size"]) if font == "default_theme" else font
# callback and hover functionality
self._command = command
self._textvariable = textvariable
self._state = state
self._hover = hover
self._compound = compound
self._click_animation_running = False
# configure grid system (2x2)
self.grid_rowconfigure(0, weight=1)
self.grid_columnconfigure(0, weight=1)
self.grid_rowconfigure(1, weight=1)
self.grid_columnconfigure(1, weight=1)
# canvas
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=2, columnspan=2, sticky="nsew")
self._draw_engine = DrawEngine(self._canvas)
# canvas 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)
super().bind('<Configure>', self._update_dimensions_event)
# configure cursor and initial draw
self._set_cursor()
self._draw()
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
if self._image_label is not None:
self._image_label.destroy()
self._image_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):
requires_recoloring = self._draw_engine.draw_rounded_rect_with_border(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))
if no_color_updates is False or requires_recoloring:
self._canvas.configure(bg=ThemeManager.single_color(self._bg_color, self._appearance_mode))
# set color for the button border parts (outline)
self._canvas.itemconfig("border_parts",
outline=ThemeManager.single_color(self._border_color, self._appearance_mode),
fill=ThemeManager.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=ThemeManager.single_color(self._bg_color, self._appearance_mode),
fill=ThemeManager.single_color(self._bg_color, self._appearance_mode))
else:
self._canvas.itemconfig("inner_parts",
outline=ThemeManager.single_color(self._fg_color, self._appearance_mode),
fill=ThemeManager.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._apply_font_scaling(self._font),
text=self._text,
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=ThemeManager.single_color(self._text_color, self._appearance_mode))
if self._state == tkinter.DISABLED:
self._text_label.configure(fg=(ThemeManager.single_color(self._text_color_disabled, self._appearance_mode)))
else:
self._text_label.configure(fg=ThemeManager.single_color(self._text_color, self._appearance_mode))
if self._fg_color is None:
self._text_label.configure(bg=ThemeManager.single_color(self._bg_color, self._appearance_mode))
else:
self._text_label.configure(bg=ThemeManager.single_color(self._fg_color, self._appearance_mode))
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._fg_color is None:
self._image_label.configure(bg=ThemeManager.single_color(self._bg_color, self._appearance_mode))
else:
self._image_label.configure(bg=ThemeManager.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="",
pady=(self._apply_widget_scaling(self._border_width), self._apply_widget_scaling(self._border_width) + 1)) # bottom pady with +1 for rounding to even
# 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, rowspan=2, columnspan=2, sticky="",
padx=self._apply_widget_scaling(self._corner_radius),
pady=(self._apply_widget_scaling(self._border_width), self._apply_widget_scaling(self._border_width) + 1)) # bottom pady with +1 for rounding to even
# 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, sticky="e", rowspan=2, columnspan=1,
padx=(max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(self._border_width)), 2),
pady=(self._apply_widget_scaling(self._border_width), self._apply_widget_scaling(self._border_width) + 1))
self._text_label.grid(row=0, column=1, sticky="w", rowspan=2, columnspan=1,
padx=(2, max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(self._border_width))),
pady=(self._apply_widget_scaling(self._border_width), self._apply_widget_scaling(self._border_width) + 1))
elif self._compound == tkinter.TOP or self._compound == "top":
self._image_label.grid(row=0, column=0, sticky="s", columnspan=2, rowspan=1,
padx=max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(self._border_width)),
pady=(self._apply_widget_scaling(self._border_width), 2))
self._text_label.grid(row=1, column=0, sticky="n", columnspan=2, rowspan=1,
padx=max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(self._border_width)),
pady=(2, self._apply_widget_scaling(self._border_width)))
elif self._compound == tkinter.RIGHT or self._compound == "right":
self._image_label.grid(row=0, column=1, sticky="w", rowspan=2, columnspan=1,
padx=(2, max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(self._border_width))),
pady=(self._apply_widget_scaling(self._border_width), self._apply_widget_scaling(self._border_width) + 1))
self._text_label.grid(row=0, column=0, sticky="e", rowspan=2, columnspan=1,
padx=(max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(self._border_width)), 2),
pady=(self._apply_widget_scaling(self._border_width), self._apply_widget_scaling(self._border_width) + 1))
elif self._compound == tkinter.BOTTOM or self._compound == "bottom":
self._image_label.grid(row=1, column=0, sticky="n", columnspan=2, rowspan=1,
padx=max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(self._border_width)),
pady=(2, self._apply_widget_scaling(self._border_width)))
self._text_label.grid(row=0, column=0, sticky="s", columnspan=2, rowspan=1,
padx=max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(self._border_width)),
pady=(self._apply_widget_scaling(self._border_width), 2))
def configure(self, require_redraw=False, **kwargs):
if "text" in kwargs:
self._text = kwargs.pop("text")
if self._text_label is None:
require_redraw = True # text_label will be created in .draw()
else:
self._text_label.configure(text=self._text)
if "font" in kwargs:
self._font = kwargs.pop("font")
if self._text_label is not None:
self._text_label.configure(font=self._apply_font_scaling(self._font))
if "state" in kwargs:
self._state = kwargs.pop("state")
self._set_cursor()
require_redraw = True
if "image" in kwargs:
self._image = kwargs.pop("image")
require_redraw = True
if "corner_radius" in kwargs:
self._corner_radius = kwargs.pop("corner_radius")
require_redraw = True
if "compound" in kwargs:
self._compound = kwargs.pop("compound")
require_redraw = True
if "fg_color" in kwargs:
self._fg_color = kwargs.pop("fg_color")
require_redraw = True
if "border_color" in kwargs:
self._border_color = kwargs.pop("border_color")
require_redraw = True
if "hover_color" in kwargs:
self._hover_color = kwargs.pop("hover_color")
require_redraw = True
if "text_color" in kwargs:
self._text_color = kwargs.pop("text_color")
require_redraw = True
if "command" in kwargs:
self._command = kwargs.pop("command")
if "textvariable" in kwargs:
self._textvariable = kwargs.pop("textvariable")
if self._text_label is not None:
self._text_label.configure(textvariable=self._textvariable)
if "width" in kwargs:
self._set_dimensions(width=kwargs.pop("width"))
if "height" in kwargs:
self._set_dimensions(height=kwargs.pop("height"))
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 == "border_width":
return self._border_width
elif attribute_name == "fg_color":
return self._fg_color
elif attribute_name == "hover_color":
return self._hover_color
elif attribute_name == "border_color":
return self._border_color
elif attribute_name == "text_color":
return self._text_color
elif attribute_name == "text_color_disabled":
return self._text_color_disabled
elif attribute_name == "text":
return self._text
elif attribute_name == "font":
return self._font
elif attribute_name == "textvariable":
return self._textvariable
elif attribute_name == "image":
return self._image
elif attribute_name == "state":
return self._state
elif attribute_name == "hover":
return self._hover
elif attribute_name == "command":
return self._command
elif attribute_name == "compound":
return self._compound
else:
return super().cget(attribute_name)
def _set_cursor(self):
if Settings.cursor_manipulation_enabled:
if self._state == tkinter.DISABLED:
if sys.platform == "darwin" and self._command is not None and Settings.cursor_manipulation_enabled:
self.configure(cursor="arrow")
elif sys.platform.startswith("win") and self._command is not None and Settings.cursor_manipulation_enabled:
self.configure(cursor="arrow")
elif self._state == tkinter.NORMAL:
if sys.platform == "darwin" and self._command is not None and Settings.cursor_manipulation_enabled:
self.configure(cursor="pointinghand")
elif sys.platform.startswith("win") and self._command is not None and Settings.cursor_manipulation_enabled:
self.configure(cursor="hand2")
def _on_enter(self, event=None):
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=ThemeManager.single_color(inner_parts_color, self._appearance_mode),
fill=ThemeManager.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=ThemeManager.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=ThemeManager.single_color(inner_parts_color, self._appearance_mode))
def _on_leave(self, event=None):
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=ThemeManager.single_color(inner_parts_color, self._appearance_mode),
fill=ThemeManager.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=ThemeManager.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=ThemeManager.single_color(inner_parts_color, self._appearance_mode))
def _click_animation(self):
if self._click_animation_running:
self._on_enter()
def _clicked(self, event=None):
if self._command is not None:
if self._state != 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._command()
def bind(self, sequence: str = None, command: Callable = None, add: str = None) -> str:
""" called on the tkinter.Label and tkinter.Canvas """
canvas_bind_return = self._canvas.bind(sequence, command, add)
label_bind_return = self._text_label.bind(sequence, command, add)
return canvas_bind_return + " + " + label_bind_return
def unbind(self, sequence: str, funcid: str = None):
""" called on the tkinter.Label and tkinter.Canvas """
canvas_bind_return, label_bind_return = funcid.split(" + ")
self._canvas.unbind(sequence, canvas_bind_return)
self._text_label.unbind(sequence, label_bind_return)