Source code for draugr.opencv_utilities.windows.elements.trackbar

from typing import Optional

import cv2

from warg import sink

__all__ = ["add_trackbar"]


[docs]def add_trackbar( window_name: str, trackbar_name: str, default: Optional[int] = None, *, min_val: int = 0, max_val: int = 255, callback: callable = sink ) -> None: """ Adds a trackbar to a window. :param default: :type default: :param min_val: :type min_val: :param max_val: :type max_val: :param window_name: Name of the window to add the trackbar to. :param trackbar_name: Name of the trackbar. :param callback: Callback function to be called when the trackbar is moved. :return: None """ if default is None: default = min_val + (max_val - min_val) // 2 default = int(default) min_val = int(min_val) max_val = int(max_val) cv2.createTrackbar(trackbar_name, window_name, default, max_val, callback) # cv2.setTrackbarPos(trackbar_name, window_name, default) cv2.setTrackbarMin(trackbar_name, window_name, min_val)
# cv2.setTrackbarMax(trackbar_name, window_name, max_val)