Implement zoom and rotate for preview app

[AlexAndBear]

Description

Related Issue

• Fixes Image Preview: Missing zoom and rotate options #7160

Motivation and Context

How Has This Been Tested?

• test environment:
• test case 1:
• test case 2:
• ...

Screenshots (if appropriate):

Types of changes

• 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)
• Technical debt
• Tests

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

Open tasks:

• ...

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[ownclouders]

Results for oC10SharingPublic2 https://drone.owncloud.com/owncloud/web/29905/37/1

💥 The acceptance tests failed on retry. Please find the screenshots inside ...

webUISharingPublicExpire-shareByPublicLinkExpiringLinks_feature-L62.png

💥 The oC10SharingPublic2 tests pipeline failed. The build has been cancelled.

[AlexAndBear]

I really don't know what to "unit-test" here

[kulmann]

The controls for zoom feel a bit jumpy, depending on the percentage value shown in the controls. Could you make this a fixed width somehow?
Other than that only a nitpick about some code deduplication. Feature itself works like a charm, I love it!

I was a bit irritated that the zoom and rotate controls only appear after the image is loaded (that looks funny when browsing through a folder of only images, because the zoom and rotate controls disappear and then reappear all the time). But that will be somewhat fixed when we introduce preloading of images. So nothing we need to worry about here.

[AlexAndBear]

Thx for the feedback!

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

[kulmann]

Love it 😍