Keyboard behaviour in Windows 10 differs from other applications

[GijsbertNoordam]

When compared to office applications like PowerPoint or the Adobe Acrobat reader, the use of the [spacebar] and [esc] key in the Thorium Reader is different and quite possibly inconsistent with what an average user might expect. Whereas other products use the [spacebar] to move forward in a document, in Thorium the [spacebar] initially does not respond, but after maximizing once, can be used to alter between maximize and startup screen size. For maximizing, other applications typically use a key stroke combination (e.g. [Crtl-L] in the Acrobat reader), and for going from a maximized screen back to startup size the key can be used.

There might be a good reason for having different keyboard behaviour. However, if there is no pressing reason, it might be worth reviewing whether/how to bring the application more in line with other applications that users work with on a Windows 10 system.

How to reproduce:

1. Open Thorium
2. Open any epub file (with more than one page of contents)
3. Click the Open Fullscreen Mode button -> Thorium maximizes
4. Hit the [spacebar] -> Thorium goes back to startup screen size
5. Hit the [spacebar] -> Thorium maximizes
6. Hit the [esc] key -> nothing happens
7. Hit either the [spacebar] or right top button to go back to startup screen size

To be in line with other applications, hitting the [spacebar] in steps 3,5,6, and 8 should lead to a page turn (Right). Hitting the [esc] key in step 7, should lead to the maximized app going back to startup screen size.

Compared to the Adobe Acrobat Reader:

1. Open Acrobat Reader
2. Open any PDF file (with more than one page of contents)
3. Hit [Ctrl-L] -> Adobe Reader will go into full screen mode
4. Hit the [spacebar] -> Adobe Reader will advance to the next page in the PDF file
5. Hit the [esc] key -> Adobe Reader will quit full screen mode

Compared to PowerPoint:

1. Open PowerPoint
2. Open any PPT file (with more than one page of contents)
3. Hit the slide show -> PowerPoint will go into presentation (=full screen) mode
4. Hit the [spacebar] -> PowerPoint will advance to the next page in the PPT file
5. Hit the [esc] key -> PowerPoint will quit presentation mode