User interface hard to use on touchscreens

The toolbar buttons in the gtk2 version of xournal are quite small, considering that the software is directed to touchscreen/tablet use. While you may need a stylo anyways for writing, it may happen from time to time you also try to use the finger for interacting with the document or for reaching a button.

Hence a View option to change button size (and to customize to show only those buttons you use) would be good.

Apart from that, modern devices often have higher-than-traditional resolutions (3200×1800 or bigger) which makes the UI even harder to use with a stylo. A port to resolution-independent gtk3 (or QML) with the benefit of touch interactions like swipe and pinch would really make the difference.

Version: 1:0.4.8-1
Ubuntu 15.04