Module TkZero.Button

Creates a themed Button.

"""
Creates a themed Button.
"""

import tkinter as tk
from tkinter import ttk
from typing import Union, Callable

from PIL.ImageTk import PhotoImage


class DisplayModes:
    """
    The display modes for buttons.

    Original: Display only the image if set, otherwise text.
    Text: Text only
    Image: Image only
    Center: Text on top of image
    Top: Image above text
    Left: Image left of text, etc.
    """

    Original = "none"
    TextOnly = "text"
    ImageOnly = "image"
    CenterTextImage = "center"
    ImageTopText = "top"
    ImageLeftText = "left"
    ImageBottomText = "bottom"
    ImageRightText = "right"


class Button(ttk.Button):
    def __init__(
        self,
        parent: Union[tk.Widget, Union[tk.Tk, tk.Toplevel]],
        text: str = "",
        image: Union[PhotoImage, tk.PhotoImage] = None,
        command: Callable = None,
    ):
        """
        Initiate a ttk.Button.

        :param parent: The parent of the button.
        :param text: The text of the button. Defaults to "".
        :param image: The image on the label. Defaults to None.
        :param command: The command to run when pressed. Defaults to None.
        """
        if not isinstance(parent, (tk.Widget, tk.Tk, tk.Toplevel)):
            raise TypeError(
                f"parent is not a "
                f"Union[tk.Widget, Union[tk.Tk, tk.Toplevel]]! "
                f"(type passed in: {repr(type(parent))})"
            )
        if not isinstance(text, str):
            raise TypeError(
                f"text is not a str! " f"(type passed in: {repr(type(text))})"
            )
        if not isinstance(image, (PhotoImage, tk.PhotoImage)) and image is not None:
            raise TypeError(
                f"image is not a Union[PhotoImage, tk.PhotoImage]! "
                f"(type passed in: {repr(type(image))})"
            )
        super().__init__(master=parent, command=command)
        self._style_root = "TButton"
        self._photo_image = None
        self._enabled = True
        self.text = text
        if image is not None:
            self.image = image
        self._hovering_over = False
        self.bind("<Enter>", lambda _: self._set_hover_state(True))
        self.bind("<Leave>", lambda _: self._set_hover_state(False))

    @property
    def text(self) -> str:
        """
        Get the text on this button.

        :return: A str of the text on this button.
        """
        return self.cget("text")

    @text.setter
    def text(self, new_text: str) -> None:
        """
        Set the text on this button.

        :param new_text: The new text.
        :return: None.
        """
        if not isinstance(new_text, str):
            raise TypeError(
                f"new_text is not a str! " f"(type passed in: {repr(type(new_text))})"
            )
        self.configure(text=new_text)

    @property
    def image(self) -> Union[PhotoImage, None]:
        """
        Get the PIL.ImageTk.PhotoImage on this button. Returns None if none
        was ever set.

        :return: A PIL.ImageTk.PhotoImage or a tk.PhotoImage or None.
        """
        return self._photo_image

    @image.setter
    def image(self, new_image: Union[PhotoImage, tk.PhotoImage]) -> None:
        """
        Set the PIL.ImageTk.PhotoImage on this button.

        :param new_image: A PIL.ImageTk.PhotoImage or None.
        :return: None.
        """
        if not isinstance(new_image, (PhotoImage, tk.PhotoImage)):
            raise TypeError(
                f"new_image is not a "
                f"PIL.ImageTk.PhotoImage or a tk.PhotoImage! "
                f"(type passed in: {repr(type(new_image))})"
            )
        self._photo_image = new_image
        self.configure(image=self._photo_image)

    @property
    def display_mode(self) -> str:
        """
        Get the display mode of this button.

        :return: A str, either one of "text", "image", "center", "top",
        "left", "bottom", or "right".
        """
        return str(self.cget("compound"))

    @display_mode.setter
    def display_mode(self, new_mode: str) -> None:
        """
        Set the display mode of this button.

        :param new_mode: A str, either one of "text", "image", "center",
        "top", "left", "bottom", or "right".
        :return: None.
        """
        if not isinstance(new_mode, str):
            raise TypeError(
                f"new_mode is not a str! (type passed in: {repr(type(new_mode))})"
            )
        self.configure(compound=new_mode)

    @property
    def enabled(self) -> bool:
        """
        Get whether this button is in normal mode or disabled mode. (grayed out
        and cannot interact with)

        :return: A bool, True if normal otherwise False.
        """
        return self._enabled

    @enabled.setter
    def enabled(self, new_state: bool) -> None:
        """
        Set whether this button is in normal mode or disabled mode. (grayed
        out and cannot interact with)

        :param new_state: The new state (a bool) True for enabled and False
        for disabled.
        :return: None.
        """
        if not isinstance(new_state, bool):
            raise TypeError(
                f"new_state is not a bool! "
                f"(type passed in: {repr(type(new_state))})"
            )
        self._enabled = new_state
        self.state(["!disabled" if self._enabled else "disabled"])

    @property
    def hovering_over(self) -> bool:
        """
        Get whether the cursor is hovering over this widget or not.

        :return: A bool.
        """
        return self._hovering_over

    def _set_hover_state(self, is_hovering: bool) -> None:
        """
        Set whether we are hovering over this widget or not.

        :param is_hovering: A bool.
        :return: None.
        """
        self._hovering_over = is_hovering

    def apply_style(self, style_name: str) -> None:
        """
        Apply a theme to this button.

        :param style_name: The name of the theme as a str, ex. "Warning"
        :return: None.
        """
        if not isinstance(style_name, str):
            raise TypeError(
                f"style_name is not a str! (type passed in: "
                f"{repr(type(style_name))})"
            )
        self.configure(style=f"{style_name}.{self._style_root}")

Classes

class Button (parent: Union[tkinter.Widget, tkinter.Tk, tkinter.Toplevel], text: str = '', image: Union[PIL.ImageTk.PhotoImage, tkinter.PhotoImage] = None, command: Callable = None)

Ttk Button widget, displays a textual label and/or image, and evaluates a command when pressed.

Initiate a ttk.Button.

:param parent: The parent of the button. :param text: The text of the button. Defaults to "". :param image: The image on the label. Defaults to None. :param command: The command to run when pressed. Defaults to None.

Expand source code

class Button(ttk.Button):
    def __init__(
        self,
        parent: Union[tk.Widget, Union[tk.Tk, tk.Toplevel]],
        text: str = "",
        image: Union[PhotoImage, tk.PhotoImage] = None,
        command: Callable = None,
    ):
        """
        Initiate a ttk.Button.

        :param parent: The parent of the button.
        :param text: The text of the button. Defaults to "".
        :param image: The image on the label. Defaults to None.
        :param command: The command to run when pressed. Defaults to None.
        """
        if not isinstance(parent, (tk.Widget, tk.Tk, tk.Toplevel)):
            raise TypeError(
                f"parent is not a "
                f"Union[tk.Widget, Union[tk.Tk, tk.Toplevel]]! "
                f"(type passed in: {repr(type(parent))})"
            )
        if not isinstance(text, str):
            raise TypeError(
                f"text is not a str! " f"(type passed in: {repr(type(text))})"
            )
        if not isinstance(image, (PhotoImage, tk.PhotoImage)) and image is not None:
            raise TypeError(
                f"image is not a Union[PhotoImage, tk.PhotoImage]! "
                f"(type passed in: {repr(type(image))})"
            )
        super().__init__(master=parent, command=command)
        self._style_root = "TButton"
        self._photo_image = None
        self._enabled = True
        self.text = text
        if image is not None:
            self.image = image
        self._hovering_over = False
        self.bind("<Enter>", lambda _: self._set_hover_state(True))
        self.bind("<Leave>", lambda _: self._set_hover_state(False))

    @property
    def text(self) -> str:
        """
        Get the text on this button.

        :return: A str of the text on this button.
        """
        return self.cget("text")

    @text.setter
    def text(self, new_text: str) -> None:
        """
        Set the text on this button.

        :param new_text: The new text.
        :return: None.
        """
        if not isinstance(new_text, str):
            raise TypeError(
                f"new_text is not a str! " f"(type passed in: {repr(type(new_text))})"
            )
        self.configure(text=new_text)

    @property
    def image(self) -> Union[PhotoImage, None]:
        """
        Get the PIL.ImageTk.PhotoImage on this button. Returns None if none
        was ever set.

        :return: A PIL.ImageTk.PhotoImage or a tk.PhotoImage or None.
        """
        return self._photo_image

    @image.setter
    def image(self, new_image: Union[PhotoImage, tk.PhotoImage]) -> None:
        """
        Set the PIL.ImageTk.PhotoImage on this button.

        :param new_image: A PIL.ImageTk.PhotoImage or None.
        :return: None.
        """
        if not isinstance(new_image, (PhotoImage, tk.PhotoImage)):
            raise TypeError(
                f"new_image is not a "
                f"PIL.ImageTk.PhotoImage or a tk.PhotoImage! "
                f"(type passed in: {repr(type(new_image))})"
            )
        self._photo_image = new_image
        self.configure(image=self._photo_image)

    @property
    def display_mode(self) -> str:
        """
        Get the display mode of this button.

        :return: A str, either one of "text", "image", "center", "top",
        "left", "bottom", or "right".
        """
        return str(self.cget("compound"))

    @display_mode.setter
    def display_mode(self, new_mode: str) -> None:
        """
        Set the display mode of this button.

        :param new_mode: A str, either one of "text", "image", "center",
        "top", "left", "bottom", or "right".
        :return: None.
        """
        if not isinstance(new_mode, str):
            raise TypeError(
                f"new_mode is not a str! (type passed in: {repr(type(new_mode))})"
            )
        self.configure(compound=new_mode)

    @property
    def enabled(self) -> bool:
        """
        Get whether this button is in normal mode or disabled mode. (grayed out
        and cannot interact with)

        :return: A bool, True if normal otherwise False.
        """
        return self._enabled

    @enabled.setter
    def enabled(self, new_state: bool) -> None:
        """
        Set whether this button is in normal mode or disabled mode. (grayed
        out and cannot interact with)

        :param new_state: The new state (a bool) True for enabled and False
        for disabled.
        :return: None.
        """
        if not isinstance(new_state, bool):
            raise TypeError(
                f"new_state is not a bool! "
                f"(type passed in: {repr(type(new_state))})"
            )
        self._enabled = new_state
        self.state(["!disabled" if self._enabled else "disabled"])

    @property
    def hovering_over(self) -> bool:
        """
        Get whether the cursor is hovering over this widget or not.

        :return: A bool.
        """
        return self._hovering_over

    def _set_hover_state(self, is_hovering: bool) -> None:
        """
        Set whether we are hovering over this widget or not.

        :param is_hovering: A bool.
        :return: None.
        """
        self._hovering_over = is_hovering

    def apply_style(self, style_name: str) -> None:
        """
        Apply a theme to this button.

        :param style_name: The name of the theme as a str, ex. "Warning"
        :return: None.
        """
        if not isinstance(style_name, str):
            raise TypeError(
                f"style_name is not a str! (type passed in: "
                f"{repr(type(style_name))})"
            )
        self.configure(style=f"{style_name}.{self._style_root}")

Ancestors

• tkinter.ttk.Button
• tkinter.ttk.Widget
• tkinter.Widget
• tkinter.BaseWidget
• tkinter.Misc
• tkinter.Pack
• tkinter.Place
• tkinter.Grid

Instance variables

var display_mode : str

Get the display mode of this button.

:return: A str, either one of "text", "image", "center", "top", "left", "bottom", or "right".

Expand source code

@property
def display_mode(self) -> str:
    """
    Get the display mode of this button.

    :return: A str, either one of "text", "image", "center", "top",
    "left", "bottom", or "right".
    """
    return str(self.cget("compound"))

var enabled : bool

Get whether this button is in normal mode or disabled mode. (grayed out and cannot interact with)

:return: A bool, True if normal otherwise False.

Expand source code

@property
def enabled(self) -> bool:
    """
    Get whether this button is in normal mode or disabled mode. (grayed out
    and cannot interact with)

    :return: A bool, True if normal otherwise False.
    """
    return self._enabled

var hovering_over : bool

Get whether the cursor is hovering over this widget or not.

:return: A bool.

Expand source code

@property
def hovering_over(self) -> bool:
    """
    Get whether the cursor is hovering over this widget or not.

    :return: A bool.
    """
    return self._hovering_over

var image : Optional[PIL.ImageTk.PhotoImage]

Get the PIL.ImageTk.PhotoImage on this button. Returns None if none was ever set.

:return: A PIL.ImageTk.PhotoImage or a tk.PhotoImage or None.

Expand source code

@property
def image(self) -> Union[PhotoImage, None]:
    """
    Get the PIL.ImageTk.PhotoImage on this button. Returns None if none
    was ever set.

    :return: A PIL.ImageTk.PhotoImage or a tk.PhotoImage or None.
    """
    return self._photo_image

var text : str

Get the text on this button.

:return: A str of the text on this button.

Expand source code

@property
def text(self) -> str:
    """
    Get the text on this button.

    :return: A str of the text on this button.
    """
    return self.cget("text")

Methods

def apply_style(self, style_name: str) ‑> NoneType

Apply a theme to this button.

:param style_name: The name of the theme as a str, ex. "Warning" :return: None.

Expand source code

def apply_style(self, style_name: str) -> None:
    """
    Apply a theme to this button.

    :param style_name: The name of the theme as a str, ex. "Warning"
    :return: None.
    """
    if not isinstance(style_name, str):
        raise TypeError(
            f"style_name is not a str! (type passed in: "
            f"{repr(type(style_name))})"
        )
    self.configure(style=f"{style_name}.{self._style_root}")

class DisplayModes

The display modes for buttons.

Original: Display only the image if set, otherwise text. Text: Text only Image: Image only Center: Text on top of image Top: Image above text Left: Image left of text, etc.

Expand source code

class DisplayModes:
    """
    The display modes for buttons.

    Original: Display only the image if set, otherwise text.
    Text: Text only
    Image: Image only
    Center: Text on top of image
    Top: Image above text
    Left: Image left of text, etc.
    """

    Original = "none"
    TextOnly = "text"
    ImageOnly = "image"
    CenterTextImage = "center"
    ImageTopText = "top"
    ImageLeftText = "left"
    ImageBottomText = "bottom"
    ImageRightText = "right"

Class variables

var CenterTextImage

var ImageBottomText

var ImageLeftText

var ImageOnly

var ImageRightText

var ImageTopText

var Original

var TextOnly