594 lines
27 KiB
Python
594 lines
27 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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from .image import CTkImage
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class CTkButton(CTkBaseClass):
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"""
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Button with rounded corners, border, hover effect, image support, click command and textvariable.
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For detailed information check out the documentation.
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"""
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_image_label_spacing: int = 6
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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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border_spacing: int = 2,
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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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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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background_corner_colors: Union[Tuple[Union[str, Tuple[str, str]]], None] = None,
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round_width_to_even_numbers: bool = True,
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round_height_to_even_numbers: bool = True,
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text: str = "CTkButton",
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font: Optional[Union[tuple, CTkFont]] = None,
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textvariable: Union[tkinter.Variable, None] = None,
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image: Union[CTkImage, "ImageTk.PhotoImage", None] = None,
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state: str = "normal",
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hover: bool = True,
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command: Union[Callable[[], None], None] = None,
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compound: str = "left",
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anchor: str = "center",
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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: int = ThemeManager.theme["CTkButton"]["corner_radius"] if corner_radius is None else corner_radius
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self._corner_radius = min(self._corner_radius, round(self._current_height / 2))
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self._border_width: int = ThemeManager.theme["CTkButton"]["border_width"] if border_width is None else border_width
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self._border_spacing: int = border_spacing
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# color
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self._fg_color: Union[str, Tuple[str, str]] = ThemeManager.theme["CTkButton"]["fg_color"] if fg_color is None else self._check_color_type(fg_color, transparency=True)
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self._hover_color: Union[str, Tuple[str, str]] = ThemeManager.theme["CTkButton"]["hover_color"] if hover_color is None else self._check_color_type(hover_color)
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self._border_color: Union[str, Tuple[str, str]] = ThemeManager.theme["CTkButton"]["border_color"] if border_color is None else self._check_color_type(border_color)
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self._text_color: Union[str, Tuple[str, str]] = ThemeManager.theme["CTkButton"]["text_color"] if text_color is None else self._check_color_type(text_color)
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self._text_color_disabled: Union[str, Tuple[str, str]] = ThemeManager.theme["CTkButton"]["text_color_disabled"] if text_color_disabled is None else self._check_color_type(text_color_disabled)
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# rendering options
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self._background_corner_colors: Union[Tuple[Union[str, Tuple[str, str]]], None] = background_corner_colors # rendering options for DrawEngine
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self._round_width_to_even_numbers: bool = round_width_to_even_numbers # rendering options for DrawEngine
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self._round_height_to_even_numbers: bool = round_height_to_even_numbers # rendering options for DrawEngine
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# text, font
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self._text = text
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self._text_label: Union[tkinter.Label, None] = None
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self._textvariable: tkinter.Variable = textvariable
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self._font: Union[tuple, CTkFont] = 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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# image
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self._image = self._check_image_type(image)
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self._image_label: Union[tkinter.Label, None] = None
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if isinstance(self._image, CTkImage):
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self._image.add_configure_callback(self._update_image)
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# other
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self._state: str = state
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self._hover: bool = hover
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self._command: Callable = command
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self._compound: str = compound
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self._anchor: str = anchor
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self._click_animation_running: bool = False
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# canvas and draw engine
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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._canvas.grid(row=0, column=0, rowspan=5, columnspan=5, sticky="nsew")
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self._draw_engine = DrawEngine(self._canvas)
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self._draw_engine.set_round_to_even_numbers(self._round_width_to_even_numbers, self._round_height_to_even_numbers) # rendering options
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# configure cursor and initial draw
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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 self._text_label is not None:
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self._text_label.bind("<Enter>", self._on_enter)
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if self._image_label is not None:
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self._image_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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if self._text_label is not None:
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self._text_label.bind("<Leave>", self._on_leave)
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if self._image_label is not None:
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self._image_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._clicked)
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if self._text_label is not None:
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self._text_label.bind("<Button-1>", self._clicked)
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if self._image_label is not None:
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self._image_label.bind("<Button-1>", self._clicked)
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def _set_scaling(self, *args, **kwargs):
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super()._set_scaling(*args, **kwargs)
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self._create_grid()
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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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self._update_image()
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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_appearance_mode(self, mode_string):
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super()._set_appearance_mode(mode_string)
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self._update_image()
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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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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._canvas.grid_forget()
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self._canvas.grid(row=0, column=0, rowspan=5, columnspan=5, sticky="nsew")
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def _update_image(self):
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if self._image_label is not None:
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if isinstance(self._image, CTkImage):
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self._image_label.configure(image=self._image.create_scaled_photo_image(self._get_widget_scaling(),
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self._get_appearance_mode()))
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elif self._image is not None:
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self._image_label.configure(image=self._image)
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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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if self._background_corner_colors is not None:
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self._draw_engine.draw_background_corners(self._apply_widget_scaling(self._current_width),
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self._apply_widget_scaling(self._current_height))
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self._canvas.itemconfig("background_corner_top_left", fill=self._apply_appearance_mode(self._background_corner_colors[0]))
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self._canvas.itemconfig("background_corner_top_right", fill=self._apply_appearance_mode(self._background_corner_colors[1]))
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self._canvas.itemconfig("background_corner_bottom_right", fill=self._apply_appearance_mode(self._background_corner_colors[2]))
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self._canvas.itemconfig("background_corner_bottom_left", fill=self._apply_appearance_mode(self._background_corner_colors[3]))
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else:
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self._canvas.delete("background_parts")
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requires_recoloring = self._draw_engine.draw_rounded_rect_with_border(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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if no_color_updates is False or requires_recoloring:
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self._canvas.configure(bg=self._apply_appearance_mode(self._bg_color))
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# set color for the button border parts (outline)
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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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# set color for inner button parts
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if self._fg_color == "transparent":
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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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else:
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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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# create text label if text given
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if self._text is not None and self._text != "":
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if self._text_label is None:
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self._text_label = tkinter.Label(master=self,
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font=self._apply_font_scaling(self._font),
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text=self._text,
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padx=0,
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pady=0,
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borderwidth=1,
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textvariable=self._textvariable)
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self._create_grid()
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self._text_label.bind("<Enter>", self._on_enter)
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self._text_label.bind("<Leave>", self._on_leave)
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self._text_label.bind("<Button-1>", self._clicked)
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self._text_label.bind("<Button-1>", self._clicked)
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if no_color_updates is False:
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# set text_label fg color (text color)
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self._text_label.configure(fg=self._apply_appearance_mode(self._text_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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if self._apply_appearance_mode(self._fg_color) == "transparent":
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self._text_label.configure(bg=self._apply_appearance_mode(self._bg_color))
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else:
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self._text_label.configure(bg=self._apply_appearance_mode(self._fg_color))
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else:
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# delete text_label if no text given
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if self._text_label is not None:
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self._text_label.destroy()
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self._text_label = None
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self._create_grid()
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# create image label if image given
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if self._image is not None:
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if self._image_label is None:
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self._image_label = tkinter.Label(master=self)
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self._update_image() # set image
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self._create_grid()
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self._image_label.bind("<Enter>", self._on_enter)
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self._image_label.bind("<Leave>", self._on_leave)
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self._image_label.bind("<Button-1>", self._clicked)
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self._image_label.bind("<Button-1>", self._clicked)
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if no_color_updates is False:
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# set image_label bg color (background color of label)
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if self._apply_appearance_mode(self._fg_color) == "transparent":
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self._image_label.configure(bg=self._apply_appearance_mode(self._bg_color))
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else:
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self._image_label.configure(bg=self._apply_appearance_mode(self._fg_color))
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else:
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# delete text_label if no text given
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if self._image_label is not None:
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self._image_label.destroy()
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self._image_label = None
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self._create_grid()
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def _create_grid(self):
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""" configure grid system (5x5) """
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# Outer rows and columns have weight of 1000 to overpower the rows and columns of the label and image with weight 1.
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# Rows and columns of image and label need weight of 1 to collapse in case of missing space on the button,
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# so image and label need sticky option to stick together in the center, and therefore outer rows and columns
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# need weight of 100 in case of other anchor than center.
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n_padding_weight, s_padding_weight, e_padding_weight, w_padding_weight = 1000, 1000, 1000, 1000
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if self._anchor != "center":
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if "n" in self._anchor:
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n_padding_weight, s_padding_weight = 0, 1000
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if "s" in self._anchor:
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n_padding_weight, s_padding_weight = 1000, 0
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if "e" in self._anchor:
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e_padding_weight, w_padding_weight = 1000, 0
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if "w" in self._anchor:
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e_padding_weight, w_padding_weight = 0, 1000
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scaled_minsize_rows = self._apply_widget_scaling(max(self._border_width + 1, self._border_spacing))
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scaled_minsize_columns = self._apply_widget_scaling(max(self._corner_radius, self._border_width + 1, self._border_spacing))
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self.grid_rowconfigure(0, weight=n_padding_weight, minsize=scaled_minsize_rows)
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self.grid_rowconfigure(4, weight=s_padding_weight, minsize=scaled_minsize_rows)
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self.grid_columnconfigure(0, weight=e_padding_weight, minsize=scaled_minsize_columns)
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self.grid_columnconfigure(4, weight=w_padding_weight, minsize=scaled_minsize_columns)
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if self._compound in ("right", "left"):
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self.grid_rowconfigure(2, weight=1)
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if self._image_label is not None and self._text_label is not None:
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self.grid_columnconfigure(2, weight=0, minsize=self._apply_widget_scaling(self._image_label_spacing))
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else:
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self.grid_columnconfigure(2, weight=0)
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self.grid_rowconfigure((1, 3), weight=0)
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self.grid_columnconfigure((1, 3), weight=1)
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else:
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self.grid_columnconfigure(2, weight=1)
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if self._image_label is not None and self._text_label is not None:
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self.grid_rowconfigure(2, weight=0, minsize=self._apply_widget_scaling(self._image_label_spacing))
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else:
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self.grid_rowconfigure(2, weight=0)
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self.grid_columnconfigure((1, 3), weight=0)
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self.grid_rowconfigure((1, 3), weight=1)
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if self._compound == "right":
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if self._image_label is not None:
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self._image_label.grid(row=2, column=3, sticky="w")
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if self._text_label is not None:
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self._text_label.grid(row=2, column=1, sticky="e")
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elif self._compound == "left":
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if self._image_label is not None:
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self._image_label.grid(row=2, column=1, sticky="e")
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if self._text_label is not None:
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self._text_label.grid(row=2, column=3, sticky="w")
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elif self._compound == "top":
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if self._image_label is not None:
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self._image_label.grid(row=1, column=2, sticky="s")
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if self._text_label is not None:
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self._text_label.grid(row=3, column=2, sticky="n")
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elif self._compound == "bottom":
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if self._image_label is not None:
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self._image_label.grid(row=3, column=2, sticky="n")
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if self._text_label is not None:
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self._text_label.grid(row=1, column=2, sticky="s")
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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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self._create_grid()
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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 "border_spacing" in kwargs:
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self._border_spacing = kwargs.pop("border_spacing")
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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"), transparency=True)
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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 "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 "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 "background_corner_colors" in kwargs:
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self._background_corner_colors = kwargs.pop("background_corner_colors")
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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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if self._text_label is None:
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require_redraw = True # text_label will be created in .draw()
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else:
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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 "textvariable" in kwargs:
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self._textvariable = kwargs.pop("textvariable")
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if self._text_label is not None:
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self._text_label.configure(textvariable=self._textvariable)
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if "image" in kwargs:
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if isinstance(self._image, CTkImage):
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self._image.remove_configure_callback(self._update_image)
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self._image = self._check_image_type(kwargs.pop("image"))
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if isinstance(self._image, CTkImage):
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self._image.add_configure_callback(self._update_image)
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self._update_image()
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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 "hover" in kwargs:
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self._hover = kwargs.pop("hover")
|
|
|
|
if "command" in kwargs:
|
|
self._command = kwargs.pop("command")
|
|
self._set_cursor()
|
|
|
|
if "compound" in kwargs:
|
|
self._compound = kwargs.pop("compound")
|
|
require_redraw = True
|
|
|
|
if "anchor" in kwargs:
|
|
self._anchor = kwargs.pop("anchor")
|
|
require_redraw = True
|
|
|
|
super().configure(require_redraw=require_redraw, **kwargs)
|
|
|
|
def cget(self, attribute_name: str) -> any:
|
|
if attribute_name == "corner_radius":
|
|
return self._corner_radius
|
|
elif attribute_name == "border_width":
|
|
return self._border_width
|
|
elif attribute_name == "border_spacing":
|
|
return self._border_spacing
|
|
|
|
elif attribute_name == "fg_color":
|
|
return self._fg_color
|
|
elif attribute_name == "hover_color":
|
|
return self._hover_color
|
|
elif attribute_name == "border_color":
|
|
return self._border_color
|
|
elif attribute_name == "text_color":
|
|
return self._text_color
|
|
elif attribute_name == "text_color_disabled":
|
|
return self._text_color_disabled
|
|
elif attribute_name == "background_corner_colors":
|
|
return self._background_corner_colors
|
|
|
|
elif attribute_name == "text":
|
|
return self._text
|
|
elif attribute_name == "font":
|
|
return self._font
|
|
elif attribute_name == "textvariable":
|
|
return self._textvariable
|
|
elif attribute_name == "image":
|
|
return self._image
|
|
elif attribute_name == "state":
|
|
return self._state
|
|
elif attribute_name == "hover":
|
|
return self._hover
|
|
elif attribute_name == "command":
|
|
return self._command
|
|
elif attribute_name == "compound":
|
|
return self._compound
|
|
elif attribute_name == "anchor":
|
|
return self._anchor
|
|
else:
|
|
return super().cget(attribute_name)
|
|
|
|
def _set_cursor(self):
|
|
if self._cursor_manipulation_enabled:
|
|
if self._state == tkinter.DISABLED:
|
|
if sys.platform == "darwin" and self._command is not None:
|
|
self.configure(cursor="arrow")
|
|
elif sys.platform.startswith("win") and self._command is not None:
|
|
self.configure(cursor="arrow")
|
|
|
|
elif self._state == tkinter.NORMAL:
|
|
if sys.platform == "darwin" and self._command is not None:
|
|
self.configure(cursor="pointinghand")
|
|
elif sys.platform.startswith("win") and self._command is not None:
|
|
self.configure(cursor="hand2")
|
|
|
|
def _on_enter(self, event=None):
|
|
if self._hover is True and self._state == "normal":
|
|
if self._hover_color is None:
|
|
inner_parts_color = self._fg_color
|
|
else:
|
|
inner_parts_color = self._hover_color
|
|
|
|
# set color of inner button parts to hover color
|
|
self._canvas.itemconfig("inner_parts",
|
|
outline=self._apply_appearance_mode(inner_parts_color),
|
|
fill=self._apply_appearance_mode(inner_parts_color))
|
|
|
|
# set text_label bg color to button hover color
|
|
if self._text_label is not None:
|
|
self._text_label.configure(bg=self._apply_appearance_mode(inner_parts_color))
|
|
|
|
# set image_label bg color to button hover color
|
|
if self._image_label is not None:
|
|
self._image_label.configure(bg=self._apply_appearance_mode(inner_parts_color))
|
|
|
|
def _on_leave(self, event=None):
|
|
self._click_animation_running = False
|
|
|
|
if self._fg_color == "transparent":
|
|
inner_parts_color = self._bg_color
|
|
else:
|
|
inner_parts_color = self._fg_color
|
|
|
|
# set color of inner button parts
|
|
self._canvas.itemconfig("inner_parts",
|
|
outline=self._apply_appearance_mode(inner_parts_color),
|
|
fill=self._apply_appearance_mode(inner_parts_color))
|
|
|
|
# set text_label bg color (label color)
|
|
if self._text_label is not None:
|
|
self._text_label.configure(bg=self._apply_appearance_mode(inner_parts_color))
|
|
|
|
# set image_label bg color (image bg color)
|
|
if self._image_label is not None:
|
|
self._image_label.configure(bg=self._apply_appearance_mode(inner_parts_color))
|
|
|
|
def _click_animation(self):
|
|
if self._click_animation_running:
|
|
self._on_enter()
|
|
|
|
def _clicked(self, event=None):
|
|
if self._state != tkinter.DISABLED:
|
|
|
|
# click animation: change color with .on_leave() and back to normal after 100ms with click_animation()
|
|
self._on_leave()
|
|
self._click_animation_running = True
|
|
self.after(100, self._click_animation)
|
|
|
|
if self._command is not None:
|
|
self._command()
|
|
|
|
def invoke(self):
|
|
""" calls command function if button is not disabled """
|
|
if self._state != tkinter.DISABLED:
|
|
if self._command is not None:
|
|
return self._command()
|
|
|
|
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)
|
|
|
|
if self._text_label is not None:
|
|
self._text_label.bind(sequence, command, add=True)
|
|
if self._image_label is not None:
|
|
self._image_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)
|
|
|
|
if self._text_label is not None:
|
|
self._text_label.unbind(sequence, None)
|
|
if self._image_label is not None:
|
|
self._image_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()
|