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425 lines
20 KiB
425 lines
20 KiB
2 years ago
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import tkinter
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import sys
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import copy
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from typing import Union, Tuple, Callable, List, Optional
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from .core_widget_classes import DropdownMenu
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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 CTkComboBox(CTkBaseClass):
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"""
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Combobox with dropdown menu, rounded corners, border, 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 = 140,
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height: int = 28,
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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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border_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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dropdown_fg_color: Optional[Union[str, Tuple[str, str]]] = None,
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dropdown_hover_color: Optional[Union[str, Tuple[str, str]]] = None,
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dropdown_text_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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font: Optional[Union[tuple, CTkFont]] = None,
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dropdown_font: Optional[Union[tuple, CTkFont]] = None,
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values: Optional[List[str]] = None,
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state: str = tkinter.NORMAL,
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hover: bool = True,
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variable: Union[tkinter.Variable, None] = None,
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command: Union[Callable[[str], None], None] = None,
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justify: str = "left",
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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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# shape
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self._corner_radius = ThemeManager.theme["CTkComboBox"]["corner_radius"] if corner_radius is None else corner_radius
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self._border_width = ThemeManager.theme["CTkComboBox"]["border_width"] if border_width is None else border_width
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# color
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self._fg_color = ThemeManager.theme["CTkComboBox"]["fg_color"] if fg_color is None else self._check_color_type(fg_color)
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self._border_color = ThemeManager.theme["CTkComboBox"]["border_color"] if border_color is None else self._check_color_type(border_color)
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self._button_color = ThemeManager.theme["CTkComboBox"]["button_color"] if button_color is None else self._check_color_type(button_color)
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self._button_hover_color = ThemeManager.theme["CTkComboBox"]["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["CTkComboBox"]["text_color"] if text_color is None else self._check_color_type(text_color)
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self._text_color_disabled = ThemeManager.theme["CTkComboBox"]["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._variable = variable
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self._state = state
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self._hover = hover
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if values is None:
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self._values = ["CTkComboBox"]
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else:
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self._values = values
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self._dropdown_menu = DropdownMenu(master=self,
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values=self._values,
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command=self._dropdown_callback,
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fg_color=dropdown_fg_color,
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hover_color=dropdown_hover_color,
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text_color=dropdown_text_color,
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font=dropdown_font)
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# configure grid system (1x1)
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self.grid_rowconfigure(0, weight=1)
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self.grid_columnconfigure(0, weight=1)
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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._desired_width),
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height=self._apply_widget_scaling(self._desired_height))
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self.draw_engine = DrawEngine(self._canvas)
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self._entry = tkinter.Entry(master=self,
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state=self._state,
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width=1,
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bd=0,
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justify=justify,
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highlightthickness=0,
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font=self._apply_font_scaling(self._font))
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self._create_grid()
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self._create_bindings()
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self._draw() # initial draw
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if self._variable is not None:
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self._entry.configure(textvariable=self._variable)
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# insert default value
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if self._variable is None:
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if len(self._values) > 0:
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self._entry.insert(0, self._values[0])
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else:
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self._entry.insert(0, "CTkComboBox")
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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:
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self._canvas.tag_bind("right_parts", "<Enter>", self._on_enter)
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self._canvas.tag_bind("dropdown_arrow", "<Enter>", self._on_enter)
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self._canvas.tag_bind("right_parts", "<Leave>", self._on_leave)
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self._canvas.tag_bind("dropdown_arrow", "<Leave>", self._on_leave)
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self._canvas.tag_bind("right_parts", "<Button-1>", self._clicked)
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self._canvas.tag_bind("dropdown_arrow", "<Button-1>", self._clicked)
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def _create_grid(self):
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self._canvas.grid(row=0, column=0, rowspan=1, columnspan=1, sticky="nsew")
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left_section_width = self._current_width - self._current_height
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self._entry.grid(row=0, column=0, rowspan=1, columnspan=1, sticky="ew",
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padx=(max(self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(3)),
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max(self._apply_widget_scaling(self._current_width - left_section_width + 3), self._apply_widget_scaling(3))),
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pady=self._apply_widget_scaling(self._border_width))
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def _set_scaling(self, *args, **kwargs):
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super()._set_scaling(*args, **kwargs)
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# change entry font size and grid padding
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self._entry.configure(font=self._apply_font_scaling(self._font))
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self._create_grid()
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self._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._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._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._draw()
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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._entry.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._canvas.grid_forget()
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self._canvas.grid(row=0, column=0, rowspan=1, columnspan=1, sticky="nsew")
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def destroy(self):
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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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left_section_width = self._current_width - self._current_height
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requires_recoloring = self.draw_engine.draw_rounded_rect_with_border_vertical_split(self._apply_widget_scaling(self._current_width),
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self._apply_widget_scaling(self._current_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(left_section_width))
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requires_recoloring_2 = self.draw_engine.draw_dropdown_arrow(self._apply_widget_scaling(self._current_width - (self._current_height / 2)),
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self._apply_widget_scaling(self._current_height / 2),
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self._apply_widget_scaling(self._current_height / 3))
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if no_color_updates is False or requires_recoloring or requires_recoloring_2:
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self._canvas.configure(bg=self._apply_appearance_mode(self._bg_color))
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self._canvas.itemconfig("inner_parts_left",
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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_left",
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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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self._canvas.itemconfig("inner_parts_right",
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outline=self._apply_appearance_mode(self._button_color),
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fill=self._apply_appearance_mode(self._button_color))
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self._canvas.itemconfig("border_parts_right",
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outline=self._apply_appearance_mode(self._button_color),
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fill=self._apply_appearance_mode(self._button_color))
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self._entry.configure(bg=self._apply_appearance_mode(self._fg_color),
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fg=self._apply_appearance_mode(self._text_color),
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readonlybackground=self._apply_appearance_mode(self._fg_color),
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disabledbackground=self._apply_appearance_mode(self._fg_color),
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disabledforeground=self._apply_appearance_mode(self._text_color_disabled),
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highlightcolor=self._apply_appearance_mode(self._fg_color),
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insertbackground=self._apply_appearance_mode(self._text_color))
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if self._state == tkinter.DISABLED:
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self._canvas.itemconfig("dropdown_arrow",
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fill=self._apply_appearance_mode(self._text_color_disabled))
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else:
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self._canvas.itemconfig("dropdown_arrow",
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fill=self._apply_appearance_mode(self._text_color))
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def _open_dropdown_menu(self):
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self._dropdown_menu.open(self.winfo_rootx(),
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self.winfo_rooty() + self._apply_widget_scaling(self._current_height + 0))
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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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self._create_grid()
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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"))
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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 "dropdown_fg_color" in kwargs:
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self._dropdown_menu.configure(fg_color=kwargs.pop("dropdown_fg_color"))
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if "dropdown_hover_color" in kwargs:
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self._dropdown_menu.configure(hover_color=kwargs.pop("dropdown_hover_color"))
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if "dropdown_text_color" in kwargs:
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self._dropdown_menu.configure(text_color=kwargs.pop("dropdown_text_color"))
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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 "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 "dropdown_font" in kwargs:
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self._dropdown_menu.configure(font=kwargs.pop("dropdown_font"))
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if "values" in kwargs:
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self._values = kwargs.pop("values")
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self._dropdown_menu.configure(values=self._values)
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if "state" in kwargs:
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self._state = kwargs.pop("state")
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self._entry.configure(state=self._state)
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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 "variable" in kwargs:
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self._variable = kwargs.pop("variable")
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self._entry.configure(textvariable=self._variable)
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if "command" in kwargs:
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self._command = kwargs.pop("command")
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if "justify" in kwargs:
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self._entry.configure(justify=kwargs.pop("justify"))
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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 == "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 == "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 == "dropdown_fg_color":
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return self._dropdown_menu.cget("fg_color")
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elif attribute_name == "dropdown_hover_color":
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return self._dropdown_menu.cget("hover_color")
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elif attribute_name == "dropdown_text_color":
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return self._dropdown_menu.cget("text_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 == "font":
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return self._font
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elif attribute_name == "dropdown_font":
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return self._dropdown_menu.cget("font")
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elif attribute_name == "values":
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|
return copy.copy(self._values)
|
||
|
|
elif attribute_name == "state":
|
||
|
|
return self._state
|
||
|
|
elif attribute_name == "hover":
|
||
|
|
return self._hover
|
||
|
|
elif attribute_name == "variable":
|
||
|
|
return self._variable
|
||
|
|
elif attribute_name == "command":
|
||
|
|
return self._command
|
||
|
|
elif attribute_name == "justify":
|
||
|
|
return self._entry.cget("justify")
|
||
|
|
else:
|
||
|
|
return super().cget(attribute_name)
|
||
|
|
|
||
|
|
def _on_enter(self, event=0):
|
||
|
|
if self._hover is True and self._state == tkinter.NORMAL and len(self._values) > 0:
|
||
|
|
if sys.platform == "darwin" and len(self._values) > 0 and self._cursor_manipulation_enabled:
|
||
|
|
self._canvas.configure(cursor="pointinghand")
|
||
|
|
elif sys.platform.startswith("win") and len(self._values) > 0 and self._cursor_manipulation_enabled:
|
||
|
|
self._canvas.configure(cursor="hand2")
|
||
|
|
|
||
|
|
# set color of inner button parts to hover color
|
||
|
|
self._canvas.itemconfig("inner_parts_right",
|
||
|
|
outline=self._apply_appearance_mode(self._button_hover_color),
|
||
|
|
fill=self._apply_appearance_mode(self._button_hover_color))
|
||
|
|
self._canvas.itemconfig("border_parts_right",
|
||
|
|
outline=self._apply_appearance_mode(self._button_hover_color),
|
||
|
|
fill=self._apply_appearance_mode(self._button_hover_color))
|
||
|
|
|
||
|
|
def _on_leave(self, event=0):
|
||
|
|
if sys.platform == "darwin" and len(self._values) > 0 and self._cursor_manipulation_enabled:
|
||
|
|
self._canvas.configure(cursor="arrow")
|
||
|
|
elif sys.platform.startswith("win") and len(self._values) > 0 and self._cursor_manipulation_enabled:
|
||
|
|
self._canvas.configure(cursor="arrow")
|
||
|
|
|
||
|
|
# set color of inner button parts
|
||
|
|
self._canvas.itemconfig("inner_parts_right",
|
||
|
|
outline=self._apply_appearance_mode(self._button_color),
|
||
|
|
fill=self._apply_appearance_mode(self._button_color))
|
||
|
|
self._canvas.itemconfig("border_parts_right",
|
||
|
|
outline=self._apply_appearance_mode(self._button_color),
|
||
|
|
fill=self._apply_appearance_mode(self._button_color))
|
||
|
|
|
||
|
|
def _dropdown_callback(self, value: str):
|
||
|
|
if self._state == "readonly":
|
||
|
|
self._entry.configure(state="normal")
|
||
|
|
self._entry.delete(0, tkinter.END)
|
||
|
|
self._entry.insert(0, value)
|
||
|
|
self._entry.configure(state="readonly")
|
||
|
|
else:
|
||
|
|
self._entry.delete(0, tkinter.END)
|
||
|
|
self._entry.insert(0, value)
|
||
|
|
|
||
|
|
if self._command is not None:
|
||
|
|
self._command(value)
|
||
|
|
|
||
|
|
def set(self, value: str):
|
||
|
|
if self._state == "readonly":
|
||
|
|
self._entry.configure(state="normal")
|
||
|
|
self._entry.delete(0, tkinter.END)
|
||
|
|
self._entry.insert(0, value)
|
||
|
|
self._entry.configure(state="readonly")
|
||
|
|
else:
|
||
|
|
self._entry.delete(0, tkinter.END)
|
||
|
|
self._entry.insert(0, value)
|
||
|
|
|
||
|
|
def get(self) -> str:
|
||
|
|
return self._entry.get()
|
||
|
|
|
||
|
|
def _clicked(self, event=None):
|
||
|
|
if self._state is not tkinter.DISABLED and len(self._values) > 0:
|
||
|
|
self._open_dropdown_menu()
|
||
|
|
|
||
|
|
def bind(self, sequence=None, command=None, add=True):
|
||
|
|
""" called on the tkinter.Entry """
|
||
|
|
if not (add == "+" or add is True):
|
||
|
|
raise ValueError("'add' argument can only be '+' or True to preserve internal callbacks")
|
||
|
|
self._entry.bind(sequence, command, add=True)
|
||
|
|
|
||
|
|
def unbind(self, sequence=None, funcid=None):
|
||
|
|
""" called on the tkinter.Entry """
|
||
|
|
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._entry.unbind(sequence, None) # unbind all callbacks for sequence
|
||
|
|
self._create_bindings(sequence=sequence) # restore internal callbacks for sequence
|
||
|
|
|
||
|
|
def focus(self):
|
||
|
|
return self._entry.focus()
|
||
|
|
|
||
|
|
def focus_set(self):
|
||
|
|
return self._entry.focus_set()
|
||
|
|
|
||
|
|
def focus_force(self):
|
||
|
|
return self._entry.focus_force()
|