461 lines
21 KiB
Python
461 lines
21 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 CTkCheckBox(CTkBaseClass):
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"""
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Checkbox with rounded corners, border, variable support and hover effect.
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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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checkbox_width: int = 24,
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checkbox_height: int = 24,
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corner_radius: Optional[int] = None,
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border_width: 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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hover_color: Optional[Union[str, Tuple[str, str]]] = None,
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border_color: Optional[Union[str, Tuple[str, str]]] = None,
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checkmark_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 = "CTkCheckBox",
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font: Optional[Union[tuple, CTkFont]] = None,
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textvariable: Union[tkinter.Variable, None] = None,
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state: str = tkinter.NORMAL,
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hover: bool = True,
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command: Union[Callable[[], None], 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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**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._checkbox_width = checkbox_width
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self._checkbox_height = checkbox_height
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# color
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self._fg_color = ThemeManager.theme["CTkCheckbox"]["fg_color"] if fg_color is None else self._check_color_type(fg_color)
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self._hover_color = ThemeManager.theme["CTkCheckbox"]["hover_color"] if hover_color is None else self._check_color_type(hover_color)
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self._border_color = ThemeManager.theme["CTkCheckbox"]["border_color"] if border_color is None else self._check_color_type(border_color)
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self._checkmark_color = ThemeManager.theme["CTkCheckbox"]["checkmark_color"] if checkmark_color is None else self._check_color_type(checkmark_color)
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# shape
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self._corner_radius = ThemeManager.theme["CTkCheckbox"]["corner_radius"] if corner_radius is None else corner_radius
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self._border_width = ThemeManager.theme["CTkCheckbox"]["border_width"] if border_width is None else border_width
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# text
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self._text = text
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self._text_label: Union[tkinter.Label, None] = None
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self._text_color = ThemeManager.theme["CTkCheckbox"]["text_color"] if text_color is None else self._check_color_type(text_color)
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self._text_color_disabled = ThemeManager.theme["CTkCheckbox"]["text_color_disabled"] if text_color_disabled is None else self._check_color_type(text_color_disabled)
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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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# callback and hover functionality
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self._command = command
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self._state = state
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self._hover = hover
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self._check_state = False
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self._onvalue = onvalue
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self._offvalue = offvalue
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self._variable: tkinter.Variable = variable
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self._variable_callback_blocked = False
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self._textvariable: tkinter.Variable = textvariable
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self._variable_callback_name = None
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# configure grid system (1x3)
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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._desired_width),
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height=self._apply_widget_scaling(self._desired_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._checkbox_width),
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height=self._apply_widget_scaling(self._checkbox_height))
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self._canvas.grid(row=0, column=0, sticky="e")
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self._draw_engine = DrawEngine(self._canvas)
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self._canvas.bind("<Enter>", self._on_enter)
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self._canvas.bind("<Leave>", self._on_leave)
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self._canvas.bind("<Button-1>", self.toggle)
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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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# register variable callback and set state according to 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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self._create_bindings()
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self._set_cursor()
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self._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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if sequence is None or sequence == "<Leave>":
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self._canvas.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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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._canvas.delete("checkmark")
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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._checkbox_width),
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height=self._apply_widget_scaling(self._checkbox_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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if self._text_label is not None:
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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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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 _draw(self, no_color_updates=False):
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super()._draw(no_color_updates)
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requires_recoloring_1 = self._draw_engine.draw_rounded_rect_with_border(self._apply_widget_scaling(self._checkbox_width),
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self._apply_widget_scaling(self._checkbox_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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if self._check_state is True:
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requires_recoloring_2 = self._draw_engine.draw_checkmark(self._apply_widget_scaling(self._checkbox_width),
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self._apply_widget_scaling(self._checkbox_height),
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self._apply_widget_scaling(self._checkbox_height * 0.58))
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else:
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requires_recoloring_2 = False
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self._canvas.delete("checkmark")
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if no_color_updates is False or requires_recoloring_1 or requires_recoloring_2:
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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._check_state is True:
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self._canvas.itemconfig("inner_parts",
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outline=self._apply_appearance_mode(self._fg_color),
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fill=self._apply_appearance_mode(self._fg_color))
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self._canvas.itemconfig("border_parts",
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outline=self._apply_appearance_mode(self._fg_color),
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fill=self._apply_appearance_mode(self._fg_color))
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if "create_line" in self._canvas.gettags("checkmark"):
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self._canvas.itemconfig("checkmark", fill=self._apply_appearance_mode(self._checkmark_color))
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else:
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self._canvas.itemconfig("checkmark", fill=self._apply_appearance_mode(self._checkmark_color))
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else:
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self._canvas.itemconfig("inner_parts",
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outline=self._apply_appearance_mode(self._bg_color),
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fill=self._apply_appearance_mode(self._bg_color))
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self._canvas.itemconfig("border_parts",
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outline=self._apply_appearance_mode(self._border_color),
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fill=self._apply_appearance_mode(self._border_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 "checkbox_width" in kwargs:
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self._checkbox_width = kwargs.pop("checkbox_width")
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self._canvas.configure(width=self._apply_widget_scaling(self._checkbox_width))
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require_redraw = True
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if "checkbox_height" in kwargs:
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self._checkbox_height = kwargs.pop("checkbox_height")
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self._canvas.configure(height=self._apply_widget_scaling(self._checkbox_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 "hover_color" in kwargs:
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self._hover_color = self._check_color_type(kwargs.pop("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 "border_color" in kwargs:
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self._border_color = self._check_color_type(kwargs.pop("border_color"))
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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) # remove old variable callback
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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 == "checkbox_width":
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return self._checkbox_width
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elif attribute_name == "checkbox_height":
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return self._checkbox_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 == "hover_color":
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return self._hover_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 == "checkmark_color":
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return self._checkmark_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 == "state":
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return self._state
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elif attribute_name == "hover":
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return self._hover
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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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else:
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return super().cget(attribute_name)
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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 _on_enter(self, event=0):
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if self._hover is True and self._state == tkinter.NORMAL:
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if self._check_state is True:
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self._canvas.itemconfig("inner_parts",
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fill=self._apply_appearance_mode(self._hover_color),
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outline=self._apply_appearance_mode(self._hover_color))
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self._canvas.itemconfig("border_parts",
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fill=self._apply_appearance_mode(self._hover_color),
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outline=self._apply_appearance_mode(self._hover_color))
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else:
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self._canvas.itemconfig("inner_parts",
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fill=self._apply_appearance_mode(self._hover_color),
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outline=self._apply_appearance_mode(self._hover_color))
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def _on_leave(self, event=0):
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if self._check_state is True:
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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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self._canvas.itemconfig("border_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("inner_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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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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def _variable_callback(self, var_name, index, mode):
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if not self._variable_callback_blocked:
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if self._variable.get() == self._onvalue:
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self.select(from_variable_callback=True)
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elif self._variable.get() == self._offvalue:
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self.deselect(from_variable_callback=True)
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def toggle(self, event=0):
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if self._state == tkinter.NORMAL:
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if self._check_state is True:
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self._check_state = False
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self._draw()
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else:
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self._check_state = True
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self._draw()
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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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self._check_state = True
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self._draw()
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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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self._check_state = False
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self._draw()
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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 bind(self, sequence=None, command=None, add="+"):
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""" called on the tkinter.Canvas """
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if add != "+" or add is not True:
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raise ValueError("'add' argument can only be '+' or True to preserve internal callbacks")
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return self._canvas.bind(sequence, command, add="+")
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def unbind(self, sequence, funcid=None):
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""" called on the tkinter.Canvas, restores internal callbacks """
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if funcid is not None:
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raise ValueError("'funcid' argument can only be None, because there is a bug in" +
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" tkinter and its not clear whether the internal callbacks will be unbinded or not")
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self._canvas.unbind(sequence, None) # unbind all callbacks for sequence
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self._create_bindings(sequence=sequence) # restore internal callbacks for sequence
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|
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def focus(self):
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return self._text_label.focus()
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|
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def focus_set(self):
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return self._text_label.focus_set()
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|
|
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def focus_force(self):
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return self._text_label.focus_force()
|