Tkinter Scale widget is used to implement a graphical slider to the User interface giving the user the option of picking through a range of values in python. The programmer can set the Maximum and Minimum values on the Scale.
Syntax:
The parameter, master represents the parent window, and options are used to set various attributes as key-values separated by commas. The options are described below:
Options of Tkinter Scale:
fg: Shows the color for the text.
from_: This option defines the start point of the scale
font: Shows the type of font used for this widget.
highlightcolor: Color of the text when the widget is under focus.
highlightbackground: Shows the color of the focus highlight when the scale does not have focus.
showvalue: Shows the current value of the scale displayed in a label beside it. To turn the label off, set it to 0.
activebackground: Background color when the mouse is over the scale.
orient: This option sets the Orientation of the Scale. By default is Horizontal. To displaying vertical, use Vertical.
label: This option is used to create a label within the scale widget to display the text.
tickinterval: Set’s the “tick” interval for displaying the values on the scale.
to: The Value of either integer or float shows the one end range of the scale. The to value can be either greater than or less than the from_ value.
variable: Control variables may be from class IntVar, DoubleVar, or StringVar. Within the last-mentioned case, the numerical value will be changed over to a string.
relief: This option specifies the type of border. By default is Flat, other options include RAISED and SUNKEN.
bd: This shows the size of the border around the widget. By default value is 2 pixels.
length: Shows the length of Scale widget. By default is 100 pixels.
bg: Shows the background color for the area around the widget.
sliderlength: It sets the length of the slider. By default is 30 pixels.
troughcolor: This option sets the color of the trough in the widget.
width: Shows the width of the trough in the scale. By default value is 15 pixels.
repeatdelay: This option used to control how long button 1 has to be held down in the trough before the slider starts moving in that direction repeatedly. By default repeatdelay=300, and the units are milliseconds.
Methods of Tkinter Scale:
set ( value ): This method sets the scale’s value.
get(): This method returns the current value of the scale.
Example:
from tkinter import *
appWindow = Tk()
appWindow.title("Window Title-Tutorialsart.com")
appWindow.geometry('350x200')
Frame1 = Frame(appWindow)
Frame1.pack()
Scala = Scale(Frame1, from_ = 0, to = 10) # default orientation is vertical
Scala.pack(padx=5, pady=5)
Scala2 = Scale(Frame1, from_ = 0, to = 10, orient=HORIZONTAL)
Scala2.pack(padx=5, pady=5)
appWindow.mainloop()
Output:
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