11

I am looking for a program that will allow me to draw anywhere (in any program/on the desktop, etc.) with my mouse on the screen.

The program should:

  • be free
  • allow me to select colours
  • be lightweight
  • run on Ubuntu
  • OP, please consider changing your selection. – einpoklum Nov 28 '18 at 18:31
4

Ardesia Sounds like it may work for you:

Thanks to Ardesia you are free to open any application and fix your ideas and comments as if you wrote on a classic chalkboard. You can use the tool to make effective on-screen presentation, highlight things or point out things of interest. The tool facilitates the online presentations and demos showing in real time your computer screen to anyone in the network. You can use this tool to enhance your lessons or courses working with your preferred applications and your preferred operating system. Create nice tutorial and demos saving the desktop images with your free hand annotations. Ardesia includes a sketchpad software that allow to free-hand draw geometrical shapes using the shape recognizer.

  • Free
  • Select-able colors (seems limited from the screenshots)
  • Not sure if it is lightweight
  • Runs on Ubuntu sudo apt-get install ardesia
6

There is a compiz plugin for that, called "Annotate".

(The link at the end also provides alternatives to this answer)

Setup may look complicated - but chances are that you will have it actually at hand, already installed - and just need to know that.

enter image description here

There's a detailed guide for the setup: ubuntu.SE: Drawing over the desktop.

This also contains guides to set up the alternative solutions ardesia, pylote and scrot.

3

Gromit mpx Is also a possible choice. It works quite well under X, but I couldn't get it to work on Wayland.

Drawing is really smooth and the lines can be customised. I am using it together with a Wacom Cintiq and am very satisfied with the results.

Link: https://github.com/bk138/gromit-mpx

  • It builds, it runs, it works! :-) ... +1. – einpoklum Nov 28 '18 at 18:31

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