Can you add Touch Mode for Convertibles?

[Reproog]

First of all, I would like to thank you for this wonderful app.

I use the app on a Chromebook with Linux support. Since I also use this Chromebook as a tablet (touchscreen), I would like the app to be operable without keyboard and mouse (e.g. by a zoom button and a "motion button" with which you can move the canvas back and forth).

Or you can add a mode, in which you can switch between Touch Mode and Keyboard Mode?

Or you build two modes (while you are in touch mode, or something):

• one, read only mode, where you can zoom in and zoom out (with gestures)
  and you can move the canvas around
• two, where you can make changes to the content

Is this possible to add these functions?