PyQtWaitingSpinner

(Py)QtWaitingSpinner is a highly configurable, custom (Py)Qt widget for showing "waiting", or "loading", spinner icons in (Py)Qt applications.

Based on pyqtspinner, by fbjorn, which is a fork of z3ntu's port of snowwlex's QtWaitingSpinner.

The spinners below are all (Py)QtWaitingSpinner widgets, differing only in their configuration:

^{Original GIF by snowwlex}

^{Original Image by fbjorn}

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Installation

pip install pyqtwaitingspinner

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Dependencies

• PyYAML
• PyQt6

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Configuration

The following properties can all be controlled directly through their corresponding properties:

• Color of the widget
• "Roundness" of the lines
• Speed (rotations per second)
• Number of lines to be drawn
• Line length
• Line width
• Radius of the spinner's "dead space" or inner circle
• The percentage fade of the "trail"
• The minimum opacity of the "trail"
• Whether to center the spinner on its parent widget
• Whether or not to disable the parent widget whilst the spinner is spinning
• The direction in which the spinner will spin

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Usage

Spinner

The following code will create a simple spinner that

• (1) blocks all user input to the main application for as long as the spinner is active
• (2) automatically centers itself on its parent widget every time "start" is called
• (3) makes use of the default shape, size and color settings.

spin_pars = SpinnerParameters(disable_parent_when_spinning=True)
spinner = WaitingSpinner(parent, spin_pars)

Configurator

The graphical Configurator allows you edit the parameters of the spinner, and view the changes live.

The Configurator can be launched with:

spinner-conf

Once the spinner's appearance is to your liking, you can either copy (and view) the initialization parameters for the construction of a SpinnerParameters object, or you can save the spinner as a YAML configuration and load it from within a WaitingSpinner class.

Show Init Args

Pressing the Show Init Args button will show the initialization arguments for the equivalent SpinnerParameters object, and will make a copy to the clipboard, including newlines and whitespace.

SpinnerParameters(
    roundness=100.0,
    trail_fade_percentage=67.0,
    number_of_lines=8,
    line_length=40,
    line_width=40,
    inner_radius=32,
    revolutions_per_second=1.0,
    color=QColor(0, 170, 0),
    minimum_trail_opacity=1.0,
    spin_direction=SpinDirection.COUNTERCLOCKWISE,
    center_on_parent=True,
    disable_parent_when_spinning=False,
)

Save Config

Pressing the Save button will open a dialog allowing you to select the location, and name, in which to save the configured spinner. The outputted YAML file can then be loaded like so:

spinner = WaitingSpinner(parent)
spinner.load("path/to/spinner.yaml")

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Documentation

Full documentation at ReadTheDocs

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Credits

• snowwlex (Alex Turkin), William Hallatt, & jacob3141 (Jacob Dawid) for the original Qt widget.

• z3ntu (Luca Weiss) for his PyQt6 port.

• fbjorn for his PyQt5 port of z3ntu's port.

• Yusuke Kamiyamane for the icons used in the Configurator.

• See full credits

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Enjoy!