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from tkinter import Button, StringVar, DISABLED, NORMAL
from . import utilities as utils
from .base import TextWidget
class PushButton(TextWidget):
def __init__(
self,
master,
command=None,
args=None,
text="Button",
image=None,
pady=10,
padx=10,
grid=None,
align=None,
icon=None,
visible=True,
enabled=None,
width=None,
height=None):
description = "[PushButton] object with text \"" + text + "\""
self._value = 0
self._image_source = icon
self._image_source = image
self._image = None
self._image_height = None
self._image_width = None
self._image_player = None
# Create a tk Button object within this object
self._text = StringVar()
self._text.set(text)
tk = Button(master.tk, textvariable=self._text, command=self._command_callback)
super(PushButton, self).__init__(master, tk, description, grid, align, visible, enabled, width, height)
# Add padding if necessary
self.tk.config(pady=pady, padx=padx)
# Setup events for press and release
self.events.set_event("<PushButton.ButtonPress-1>", "<ButtonPress-1>", self._on_press)
self.events.set_event("<PushButton.ButtonRelease-1>", "<ButtonRelease-1>", self._on_release)
self.update_command(command, args)
if image:
self._load_image()
else:
if icon:
self._load_image()
utils.deprecated("PushButton 'icon' constructor argument is deprecated. Please use image instead.")
def _load_image(self):
if self._height == "fill" or self._width == "fill":
utils.raise_error("{}\nCannot use 'fill' for width and height when using a image.".format(self.description))
# stop any animation which might still be playing
if self._image_player:
self._image_player.stop()
self._image = utils.GUIZeroImage(self._image_source, self._width, self._height)
# update the tk image
# if its an animation, start it up
if self._image.animation:
self._image_player = utils.AnimationPlayer(self, self._image, self._update_tk_image)
else:
self._update_tk_image(self._image.tk_image)
# set the width and height of the widget to match the image if they are None
super(PushButton, self.__class__).resize(
self,
self._image.width if self.width is None else self.width,
self._image.height if self.height is None else self.height)
def _update_tk_image(self, tk_image):
self.tk.config(image=tk_image)
# PROPERTIES
# ----------------------------------
# Get the value of the button (pressed, released)
@property
def value(self):
return self._value
# Get the text on the button
@property
def text(self):
return (self._text.get())
# Set the text on the button
@text.setter
def text(self, value):
self._text.set(str(value))
self.description = "[Text] object with text \"" + str(value) + "\""
@property
def image(self):
return self._image.image_source
@image.setter
def image(self, value):
self._image_source = value
self._load_image()
def resize(self, width, height):
super(PushButton, self.__class__).resize(self, width, height)
if self._image:
self._load_image()
# METHODS
# -------------------------------------------
# Internal use only
# Called when the button is pressed
def _on_press(self, event):
if self.enabled:
self._value = 1
# Called when the button is released
def _on_release(self, event):
if self.enabled:
self._value = 0
# Change padding
def padding(self, padx, pady):
self.tk.config(padx=padx, pady=pady)
def toggle(self):
self.enabled = not self.enabled
def update_command(self, command, args=None):
if command is None:
self._command = lambda: None
else:
if args is None:
self._command = command
else:
self._command = utils.with_args(command, *args)
def _command_callback(self):
self._command()
# DEPRECATED
# -------------------------------------------
# Change text
def set_text(self, text):
self.text = text
utils.deprecated("PushButton set_text() is deprecated. Please use the value property instead.")
# Toggle button state - renamed to just toggle
def toggle_state(self):
self.toggle()
utils.deprecated("PushButton toggle_state() is deprecated - renamed to toggle()")
# Change command - needs the name of a function and optional args as a list
def change_command(self, newcommand, args=None):
self.update_command(newcommand, args)
utils.deprecated("PushButton change_command() is deprecated - renamed to update_command()")
# Set the icon
def icon(self, icon):
self.image = icon
utils.deprecated("PushButton icon() is deprecated - use the image property instead.")
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