PyQtGraph – Checking if Image View has Focus
In this article, we will see how we can check if the image view object has focus or not in PyQTGaph. PyQtGraph is a graphics and user interface library for Python that provides functionality commonly required in designing and science applications. Its primary goals are to provide fast, interactive graphics for displaying data (plots, video, etc.). Widget used for display and analysis of image data. Implements many features like displaying 2D and 3D image data. For 3D data, a z-axis slider is displayed allowing the user to select which frame is displayed. Displays histogram of image data with a movable region defining the dark/light levels, editable gradient provides a color lookup table. Focus is set to the image view when we click on it, focus sever to the focus on which keyboard input is. It gets shifted when we click on other widgets.
We can create an image view with the help of the command given below:
# creating a pyqtgraph image view object imv = pg.ImageView()
In order to do this we use hasFocus() method with the image view object
Syntax : imv.hasFocus()
Argument : It takes no argument
Return : It returns bool
Below is the implementation:
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