Refactoring mouse navigation

[alex-w]

Splitting the mouse navigation option into 2 options: navigation and zooming

Description

Splitting the mouse navigation option into 2 options adding the possibility to disable zooming by mouse without disabling the mouse dragging. As result we may disable zooming in the eyepiece mode in Oculars without disabling the dragging via mouse in same time.

Fixes #1317, #2086

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• This change requires a documentation update

How Has This Been Tested?

Tested on the MacBook Pro with trackpad

Test Configuration:

• Operating system: macOS Monterey (12.0.1)

Checklist:

• My code follows the code style of this project.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[github-actions]

Great PR! Please pay attention to the following items before merging:

Files matching src/**/*.cpp:

• Are possibly unused includes removed?

Files matching guide/**:

• Did you remember to update screenshots to match new updates?
• Did you remember to grammar check in changed part of documentation?

This is an automatically generated QA checklist based on modified files

[github-actions]

Hello @alex-w! Thank you for this enhancement.

[alex-w]

@gzotti I think this PR is ready to merge

[gzotti]

Can you move in ocular view now? Or what has changed for the user?

Ah: I can move when no object is selected and centered. But when something is selected, I cannot move away using the mouse. Or yes, but I have to press the mouse button about 2 seconds until I can move the scene. This is also unexpected.

[alex-w]

Can you move in ocular view now? Or what has changed for the user?

Ah: I can move when no object is selected and centered. But when something is selected, I cannot move away using the mouse. Or yes, but I have to press the mouse button about 2 seconds until I can move the scene. This is also unexpected.

The behaviour is connected to setting for eyepiece mode, but yes, you may disable zooming through mouse now separately

[gzotti]

Well, I don't observe currently. You can merge if you want because working as before is possible, but I expect bug reports with my observations about this funny behaviour that it takes some weird move to finally drag the view in Oculars view.

[github-actions]

Hello @alex-w! Please check the fresh version (development snapshot) of Stellarium:
https://github.com/Stellarium/stellarium-data/releases/tag/weekly-snapshot

[github-actions]

Hello @alex-w! Please check the latest stable version of Stellarium:
https://github.com/Stellarium/stellarium/releases/latest