AlphaBar

class ttkwidgets.color.AlphaBar(parent, alpha=255, color=(255, 0, 0), height=11, width=256, variable=None, **kwargs)

Bases: Tkinter.Canvas

Bar to select alpha value.

__init__(parent, alpha=255, color=(255, 0, 0), height=11, width=256, variable=None, **kwargs)

Create a bar to select the alpha value.

Parameters:

• parent (widget) – parent widget
• alpha (int) – initially selected alpha value (between 0 and 255)
• color (tuple[int]) – gradient color in RGB format
• variable (IntVar) – variable linked to the alpha value
• height (int) – height of the widget in pixels
• width (int) – width of the widget in pixels
• kwargs – options to be passed on to the tk.Canvas initializer

get()

Return alpha value of color under cursor.

set(alpha)

Set cursor position on the color corresponding to the alpha value.

Parameters:alpha (int) – new alpha value (between 0 and 255)

set_color(color)

Change gradient color and change cursor position if an alpha value is supplied.

Parameters:color (tuple[int]) – new gradient color in RGB(A) format