Bug 480426

SUMMARY
When using the app, particularly when using the Flatbed scanner, I often make a preview first, select what I want, and then scan. After the preview is done, the scanner moves the scanner head back to the start. If I press the scan button before the scanner head has finished moving, Skanlite will complain that the scanner is busy... While this is correct behaviour and isn't really a bug, this means that I have to wait for the scanner to finish moving before pressing the scan button, which is inconvenient. 

Ideally, the app should know that I should start scanning immediately after the scanner stops being busy. To improve the user experience a little, I would like to suggest that the app itself wait for the scanner to stop being busy before starting to scan again, especially if it's right after a preview, with a timeout of maybe 30-60 seconds.


STEPS TO REPRODUCE
1. Make a preview from the scanner
2. Before the scan head goes back to the starting position, press the scan button.

OBSERVED RESULT
An error dialog appears with "Scanner is busy"

EXPECTED RESULT
The application waits until the scan head moves back to the start position, and then starts the scan.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Manjaro Linux
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.113.0
Qt Version: 5.15.12

ADDITIONAL INFORMATION
I am using an HP Officejet Pro 8620 via the network. My laptop is connected wirelessly to the network, and the printer/scanner is connected via ethernet.