Feature/check sum generator

[Joaolfelicio]

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Internationalization and localization
• Other (please describe):

What is the current behavior?

As a user, I'd like to be able to calculate the checksum of a file and compare it with a hash value so I'm able to know if the file was modified.

Issue Number: #141

What is the new behavior?

As a user, I'd like to be able to calculate the checksum of a file using multiple hashing algorithms like MD5, SHA1, SHA256, SHA384 or SHA512.

It will display a loading spinner while a file is being hashed unless the file is small, so we don't see the load flicking.

Other information

Quality check

Before creating this PR, have you:

• Followed the code style guideline as described in CONTRIBUTING.md
• Verified that the change work in Release build configuration
• Checked all unit tests pass

What's missing

1. Not sure which font icon/svg to use, open to suggestions!
2. For the moment, the control output comparer is not doing anything, not sure if we want to keep it or what would be the best UX for this control.
3. I did realize that the compact overlay button on the top sometimes throws, could be local as no change related to it was performed.

I will need some help with the above points, thanks.

[Joaolfelicio]

Regarding point number 3, seems like it's only in debug mode!

[veler]

Hello,
Thank you very much for this contribution! Overall, it looks very good. Just a few details here and there. :-)

[veler]

Awesome! Thank you for the update! It looks good to me. @btiteux , can you please take a look and merge if it looks good to you too?

[Joaolfelicio]

Nice! Could you please just take a look at points number 1 and 2?

[veler]

• Not sure which font icon/svg to use, open to suggestions!
• For the moment, the control output comparer is not doing anything, not sure if we want to keep it or what would be the best UX for this control.

Oh sorry I missed that.

Not sure which font icon/svg to use, open to suggestions!

It looks good to me. Worst case we can change that later.

For the moment, the control output comparer is not doing anything, not sure if we want to keep it or what would be the best UX for this control.

That's fine too :)

[veler]

I'm facing a race condition on my machine and I think that this line along with 343 and maybe a few others are the cause.

The scenario I have is:

1. Select a file. Computation start. Progress bar is displayed.
2. Select another file while the computation of the 1st one isn't done yet.
3. In this scenario, the progress bar simply disappear.

I think the race here is that line 343 (with the new file) runs before 356 (with the old file) is executed.

A proper fix is probably to cache the task on line 326 and await it (when not null) right after line 339. Thoughts?