mirror of
https://github.com/TomSchimansky/CustomTkinter.git
synced 2023-08-10 21:13:13 +03:00
484 lines
23 KiB
Python
484 lines
23 KiB
Python
import tkinter
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import sys
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from typing import Union, Tuple, Callable, Optional
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from .core_rendering import CTkCanvas
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from .theme import ThemeManager
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from .core_rendering import DrawEngine
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from .core_widget_classes import CTkBaseClass
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from .font import CTkFont
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class CTkSwitch(CTkBaseClass):
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"""
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Switch with rounded corners, border, label, command, variable support.
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For detailed information check out the documentation.
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"""
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def __init__(self,
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master: any,
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width: int = 100,
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height: int = 24,
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switch_width: int = 36,
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switch_height: int = 18,
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corner_radius: Optional[int] = None,
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border_width: Optional[int] = None,
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button_length: Optional[int] = None,
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bg_color: Union[str, Tuple[str, str]] = "transparent",
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fg_color: Optional[Union[str, Tuple[str, str]]] = None,
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border_color: Union[str, Tuple[str, str]] = "transparent",
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progress_color: Optional[Union[str, Tuple[str, str]]] = None,
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button_color: Optional[Union[str, Tuple[str, str]]] = None,
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button_hover_color: Optional[Union[str, Tuple[str, str]]] = None,
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text_color: Optional[Union[str, Tuple[str, str]]] = None,
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text_color_disabled: Optional[Union[str, Tuple[str, str]]] = None,
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text: str = "CTkSwitch",
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font: Optional[Union[tuple, CTkFont]] = None,
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textvariable: Union[tkinter.Variable, None] = None,
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onvalue: Union[int, str] = 1,
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offvalue: Union[int, str] = 0,
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variable: Union[tkinter.Variable, None] = None,
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hover: bool = True,
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command: Union[Callable, None] = None,
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state: str = tkinter.NORMAL,
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**kwargs):
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# transfer basic functionality (_bg_color, size, __appearance_mode, scaling) to CTkBaseClass
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super().__init__(master=master, bg_color=bg_color, width=width, height=height, **kwargs)
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# dimensions
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self._switch_width = switch_width
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self._switch_height = switch_height
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# color
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self._border_color = self._check_color_type(border_color, transparency=True)
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self._fg_color = ThemeManager.theme["CTkSwitch"]["fg_color"] if fg_color is None else self._check_color_type(fg_color)
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self._progress_color = ThemeManager.theme["CTkSwitch"]["progress_color"] if progress_color is None else self._check_color_type(progress_color, transparency=True)
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self._button_color = ThemeManager.theme["CTkSwitch"]["button_color"] if button_color is None else self._check_color_type(button_color)
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self._button_hover_color = ThemeManager.theme["CTkSwitch"]["button_hover_color"] if button_hover_color is None else self._check_color_type(button_hover_color)
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self._text_color = ThemeManager.theme["CTkSwitch"]["text_color"] if text_color is None else self._check_color_type(text_color)
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self._text_color_disabled = ThemeManager.theme["CTkSwitch"]["text_color_disabled"] if text_color_disabled is None else self._check_color_type(text_color_disabled)
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# text
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self._text = text
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self._text_label = None
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# font
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self._font = CTkFont() if font is None else self._check_font_type(font)
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if isinstance(self._font, CTkFont):
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self._font.add_size_configure_callback(self._update_font)
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# shape
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self._corner_radius = ThemeManager.theme["CTkSwitch"]["corner_radius"] if corner_radius is None else corner_radius
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self._border_width = ThemeManager.theme["CTkSwitch"]["border_width"] if border_width is None else border_width
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self._button_length = ThemeManager.theme["CTkSwitch"]["button_length"] if button_length is None else button_length
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self._hover_state: bool = False
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self._check_state: bool = False # True if switch is activated
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self._hover = hover
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self._state = state
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self._onvalue = onvalue
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self._offvalue = offvalue
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# callback and control variables
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self._command = command
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self._variable = variable
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self._variable_callback_blocked = False
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self._variable_callback_name = None
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self._textvariable = textvariable
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# configure grid system (3x1)
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self.grid_columnconfigure(0, weight=0)
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self.grid_columnconfigure(1, weight=0, minsize=self._apply_widget_scaling(6))
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self.grid_columnconfigure(2, weight=1)
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self.grid_rowconfigure(0, weight=1)
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self._bg_canvas = CTkCanvas(master=self,
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highlightthickness=0,
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width=self._apply_widget_scaling(self._current_width),
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height=self._apply_widget_scaling(self._current_height))
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self._bg_canvas.grid(row=0, column=0, columnspan=3, sticky="nswe")
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self._canvas = CTkCanvas(master=self,
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highlightthickness=0,
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width=self._apply_widget_scaling(self._switch_width),
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height=self._apply_widget_scaling(self._switch_height))
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self._canvas.grid(row=0, column=0, sticky="")
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self._draw_engine = DrawEngine(self._canvas)
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self._text_label = tkinter.Label(master=self,
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bd=0,
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padx=0,
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pady=0,
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text=self._text,
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justify=tkinter.LEFT,
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font=self._apply_font_scaling(self._font),
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textvariable=self._textvariable)
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self._text_label.grid(row=0, column=2, sticky="w")
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self._text_label["anchor"] = "w"
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if self._variable is not None and self._variable != "":
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self._variable_callback_name = self._variable.trace_add("write", self._variable_callback)
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self._check_state = True if self._variable.get() == self._onvalue else False
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self._create_bindings()
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self._set_cursor()
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self._draw() # initial draw
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def _create_bindings(self, sequence: Optional[str] = None):
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""" set necessary bindings for functionality of widget, will overwrite other bindings """
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if sequence is None or sequence == "<Enter>":
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self._canvas.bind("<Enter>", self._on_enter)
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self._text_label.bind("<Enter>", self._on_enter)
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if sequence is None or sequence == "<Leave>":
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self._canvas.bind("<Leave>", self._on_leave)
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self._text_label.bind("<Leave>", self._on_leave)
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if sequence is None or sequence == "<Button-1>":
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self._canvas.bind("<Button-1>", self.toggle)
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self._text_label.bind("<Button-1>", self.toggle)
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def _set_scaling(self, *args, **kwargs):
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super()._set_scaling(*args, **kwargs)
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self.grid_columnconfigure(1, weight=0, minsize=self._apply_widget_scaling(6))
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self._text_label.configure(font=self._apply_font_scaling(self._font))
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self._bg_canvas.configure(width=self._apply_widget_scaling(self._desired_width),
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height=self._apply_widget_scaling(self._desired_height))
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self._canvas.configure(width=self._apply_widget_scaling(self._switch_width),
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height=self._apply_widget_scaling(self._switch_height))
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self._draw(no_color_updates=True)
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def _set_dimensions(self, width: int = None, height: int = None):
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super()._set_dimensions(width, height)
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self._bg_canvas.configure(width=self._apply_widget_scaling(self._desired_width),
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height=self._apply_widget_scaling(self._desired_height))
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def _update_font(self):
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""" pass font to tkinter widgets with applied font scaling and update grid with workaround """
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self._text_label.configure(font=self._apply_font_scaling(self._font))
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# Workaround to force grid to be resized when text changes size.
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# Otherwise grid will lag and only resizes if other mouse action occurs.
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self._bg_canvas.grid_forget()
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self._bg_canvas.grid(row=0, column=0, columnspan=3, sticky="nswe")
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def destroy(self):
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# remove variable_callback from variable callbacks if variable exists
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if self._variable is not None:
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self._variable.trace_remove("write", self._variable_callback_name)
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if isinstance(self._font, CTkFont):
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self._font.remove_size_configure_callback(self._update_font)
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super().destroy()
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def _set_cursor(self):
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if self._cursor_manipulation_enabled:
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if self._state == tkinter.DISABLED:
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if sys.platform == "darwin":
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self._canvas.configure(cursor="arrow")
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if self._text_label is not None:
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self._text_label.configure(cursor="arrow")
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elif sys.platform.startswith("win"):
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self._canvas.configure(cursor="arrow")
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if self._text_label is not None:
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self._text_label.configure(cursor="arrow")
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elif self._state == tkinter.NORMAL:
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if sys.platform == "darwin":
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self._canvas.configure(cursor="pointinghand")
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if self._text_label is not None:
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self._text_label.configure(cursor="pointinghand")
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elif sys.platform.startswith("win"):
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self._canvas.configure(cursor="hand2")
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if self._text_label is not None:
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self._text_label.configure(cursor="hand2")
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def _draw(self, no_color_updates=False):
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super()._draw(no_color_updates)
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if self._check_state is True:
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requires_recoloring = self._draw_engine.draw_rounded_slider_with_border_and_button(self._apply_widget_scaling(self._switch_width),
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self._apply_widget_scaling(self._switch_height),
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self._apply_widget_scaling(self._corner_radius),
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self._apply_widget_scaling(self._border_width),
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self._apply_widget_scaling(self._button_length),
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self._apply_widget_scaling(self._corner_radius),
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1, "w")
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else:
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requires_recoloring = self._draw_engine.draw_rounded_slider_with_border_and_button(self._apply_widget_scaling(self._switch_width),
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self._apply_widget_scaling(self._switch_height),
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self._apply_widget_scaling(self._corner_radius),
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self._apply_widget_scaling(self._border_width),
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self._apply_widget_scaling(self._button_length),
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self._apply_widget_scaling(self._corner_radius),
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0, "w")
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if no_color_updates is False or requires_recoloring:
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self._bg_canvas.configure(bg=self._apply_appearance_mode(self._bg_color))
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self._canvas.configure(bg=self._apply_appearance_mode(self._bg_color))
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if self._border_color == "transparent":
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self._canvas.itemconfig("border_parts",
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fill=self._apply_appearance_mode(self._bg_color),
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outline=self._apply_appearance_mode(self._bg_color))
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else:
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self._canvas.itemconfig("border_parts",
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fill=self._apply_appearance_mode(self._border_color),
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outline=self._apply_appearance_mode(self._border_color))
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self._canvas.itemconfig("inner_parts",
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fill=self._apply_appearance_mode(self._fg_color),
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outline=self._apply_appearance_mode(self._fg_color))
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if self._progress_color == "transparent":
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self._canvas.itemconfig("progress_parts",
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fill=self._apply_appearance_mode(self._fg_color),
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outline=self._apply_appearance_mode(self._fg_color))
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else:
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self._canvas.itemconfig("progress_parts",
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fill=self._apply_appearance_mode(self._progress_color),
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outline=self._apply_appearance_mode(self._progress_color))
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self._canvas.itemconfig("slider_parts",
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fill=self._apply_appearance_mode(self._button_color),
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outline=self._apply_appearance_mode(self._button_color))
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if self._state == tkinter.DISABLED:
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self._text_label.configure(fg=(self._apply_appearance_mode(self._text_color_disabled)))
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else:
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self._text_label.configure(fg=self._apply_appearance_mode(self._text_color))
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self._text_label.configure(bg=self._apply_appearance_mode(self._bg_color))
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def configure(self, require_redraw=False, **kwargs):
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if "corner_radius" in kwargs:
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self._corner_radius = kwargs.pop("corner_radius")
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require_redraw = True
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if "border_width" in kwargs:
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self._border_width = kwargs.pop("border_width")
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require_redraw = True
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if "button_length" in kwargs:
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self._button_length = kwargs.pop("button_length")
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require_redraw = True
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if "switch_width" in kwargs:
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self._switch_width = kwargs.pop("switch_width")
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self._canvas.configure(width=self._apply_widget_scaling(self._switch_width))
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require_redraw = True
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if "switch_height" in kwargs:
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self._switch_height = kwargs.pop("switch_height")
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self._canvas.configure(height=self._apply_widget_scaling(self._switch_height))
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require_redraw = True
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if "text" in kwargs:
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self._text = kwargs.pop("text")
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self._text_label.configure(text=self._text)
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if "font" in kwargs:
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if isinstance(self._font, CTkFont):
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self._font.remove_size_configure_callback(self._update_font)
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self._font = self._check_font_type(kwargs.pop("font"))
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if isinstance(self._font, CTkFont):
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self._font.add_size_configure_callback(self._update_font)
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self._update_font()
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if "state" in kwargs:
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self._state = kwargs.pop("state")
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self._set_cursor()
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require_redraw = True
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if "fg_color" in kwargs:
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self._fg_color = self._check_color_type(kwargs.pop("fg_color"))
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require_redraw = True
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if "border_color" in kwargs:
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self._border_color = self._check_color_type(kwargs.pop("border_color"), transparency=True)
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require_redraw = True
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if "progress_color" in kwargs:
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self._progress_color = self._check_color_type(kwargs.pop("progress_color"), transparency=True)
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require_redraw = True
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if "button_color" in kwargs:
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self._button_color = self._check_color_type(kwargs.pop("button_color"))
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require_redraw = True
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if "button_hover_color" in kwargs:
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self._button_hover_color = self._check_color_type(kwargs.pop("button_hover_color"))
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require_redraw = True
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if "text_color" in kwargs:
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self._text_color = self._check_color_type(kwargs.pop("text_color"))
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require_redraw = True
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if "text_color_disabled" in kwargs:
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self._text_color_disabled = self._check_color_type(kwargs.pop("text_color_disabled"))
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require_redraw = True
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if "hover" in kwargs:
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self._hover = kwargs.pop("hover")
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if "command" in kwargs:
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self._command = kwargs.pop("command")
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if "textvariable" in kwargs:
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self._textvariable = kwargs.pop("textvariable")
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self._text_label.configure(textvariable=self._textvariable)
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if "variable" in kwargs:
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if self._variable is not None and self._variable != "":
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self._variable.trace_remove("write", self._variable_callback_name)
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self._variable = kwargs.pop("variable")
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if self._variable is not None and self._variable != "":
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self._variable_callback_name = self._variable.trace_add("write", self._variable_callback)
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self._check_state = True if self._variable.get() == self._onvalue else False
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require_redraw = True
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super().configure(require_redraw=require_redraw, **kwargs)
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def cget(self, attribute_name: str) -> any:
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if attribute_name == "corner_radius":
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return self._corner_radius
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elif attribute_name == "border_width":
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return self._border_width
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elif attribute_name == "button_length":
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return self._button_length
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elif attribute_name == "switch_width":
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return self._switch_width
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elif attribute_name == "switch_height":
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return self._switch_height
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elif attribute_name == "fg_color":
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return self._fg_color
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elif attribute_name == "border_color":
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return self._border_color
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elif attribute_name == "progress_color":
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return self._progress_color
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elif attribute_name == "button_color":
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return self._button_color
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elif attribute_name == "button_hover_color":
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return self._button_hover_color
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elif attribute_name == "text_color":
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return self._text_color
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elif attribute_name == "text_color_disabled":
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return self._text_color_disabled
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elif attribute_name == "text":
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return self._text
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elif attribute_name == "font":
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return self._font
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elif attribute_name == "textvariable":
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return self._textvariable
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elif attribute_name == "onvalue":
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return self._onvalue
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elif attribute_name == "offvalue":
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return self._offvalue
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elif attribute_name == "variable":
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return self._variable
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elif attribute_name == "hover":
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return self._hover
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elif attribute_name == "command":
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return self._command
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elif attribute_name == "state":
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return self._state
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else:
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return super().cget(attribute_name)
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def toggle(self, event=None):
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if self._state is not tkinter.DISABLED:
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if self._check_state is True:
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self._check_state = False
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else:
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self._check_state = True
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self._draw(no_color_updates=True)
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if self._variable is not None:
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self._variable_callback_blocked = True
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self._variable.set(self._onvalue if self._check_state is True else self._offvalue)
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self._variable_callback_blocked = False
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if self._command is not None:
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self._command()
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def select(self, from_variable_callback=False):
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if self._state is not tkinter.DISABLED or from_variable_callback:
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self._check_state = True
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self._draw(no_color_updates=True)
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if self._variable is not None and not from_variable_callback:
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self._variable_callback_blocked = True
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self._variable.set(self._onvalue)
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self._variable_callback_blocked = False
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def deselect(self, from_variable_callback=False):
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if self._state is not tkinter.DISABLED or from_variable_callback:
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self._check_state = False
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self._draw(no_color_updates=True)
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if self._variable is not None and not from_variable_callback:
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self._variable_callback_blocked = True
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self._variable.set(self._offvalue)
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self._variable_callback_blocked = False
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def get(self) -> Union[int, str]:
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return self._onvalue if self._check_state is True else self._offvalue
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def _on_enter(self, event=0):
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if self._hover is True and self._state == "normal":
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self._hover_state = True
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self._canvas.itemconfig("slider_parts",
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fill=self._apply_appearance_mode(self._button_hover_color),
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outline=self._apply_appearance_mode(self._button_hover_color))
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def _on_leave(self, event=0):
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self._hover_state = False
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self._canvas.itemconfig("slider_parts",
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fill=self._apply_appearance_mode(self._button_color),
|
|
outline=self._apply_appearance_mode(self._button_color))
|
|
|
|
def _variable_callback(self, var_name, index, mode):
|
|
if not self._variable_callback_blocked:
|
|
if self._variable.get() == self._onvalue:
|
|
self.select(from_variable_callback=True)
|
|
elif self._variable.get() == self._offvalue:
|
|
self.deselect(from_variable_callback=True)
|
|
|
|
def bind(self, sequence: str = None, command: Callable = None, add: Union[str, bool] = True):
|
|
""" called on the tkinter.Canvas """
|
|
if not (add == "+" or add is True):
|
|
raise ValueError("'add' argument can only be '+' or True to preserve internal callbacks")
|
|
self._canvas.bind(sequence, command, add=True)
|
|
self._text_label.bind(sequence, command, add=True)
|
|
|
|
def unbind(self, sequence: str = None, funcid: str = None):
|
|
""" called on the tkinter.Label and tkinter.Canvas """
|
|
if funcid is not None:
|
|
raise ValueError("'funcid' argument can only be None, because there is a bug in" +
|
|
" tkinter and its not clear whether the internal callbacks will be unbinded or not")
|
|
self._canvas.unbind(sequence, None)
|
|
self._text_label.unbind(sequence, None)
|
|
self._create_bindings(sequence=sequence) # restore internal callbacks for sequence
|
|
|
|
def focus(self):
|
|
return self._text_label.focus()
|
|
|
|
def focus_set(self):
|
|
return self._text_label.focus_set()
|
|
|
|
def focus_force(self):
|
|
return self._text_label.focus_force()
|