Image edition before sending: crop and rotate.

[bmarty]

Content

Follow up for #6363.
See #6363 comments for the specifications. What is implemented today:

• match Figma https://www.figma.com/design/zftpgS6LjiczobJZ1GUNpt/Updates-to-Media---File-Upload?node-id=51-3554
• all remarks from @americanrefugee and @mxandreas except: 1 second after releasing, the image automatically crops and resizes/recenters in the middle of the screen. This would require more work since the code was not design to work like this. I am not sure that this is a good idea though, without having a way to cancel the last cropping: the user will have no way to increase the crop size without having to reset everything.

Note: this does not bring gallery support, for now only one image can be sent at a time, edited or not.

Extra things:

• I kept the side handle added in Add crop and rotate editing before sending images #6363, not in Figma, but I found them quite handy. They allow to modify a single edge of the crop area.

Motivation and context

Closes #2676

Screenshots / GIFs

See recorded one.

Tests

• Share an image
• On the preview click on Edit
• Play with the edition tools: resize the crop area using the 9 handles, move the crop area, rotate the image. When the image is rotated, the cropped area should remain the same
• Click on Done
• Edit again the image: the previous edition is restored
• Click on Done
• Send the image
• The cropped and or rotated image is sent to the room.

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• This PR was made with the help of AI:
  • Yes. In this case, please request a review by Copilot.
  • No.
• Changes have been tested on an Android device or Android emulator with API 24
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request title will be used in the release note, it clearly defines what will change for the user
• Pull request includes screenshots or videos if containing UI changes
• You've made a self review of your PR

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[codecov]

Codecov Report

❌ Patch coverage is 70.38082% with 210 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.16%. Comparing base (00efd9a) to head (6e74446).
⚠️ Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ments/preview/imageeditor/AttachmentImageEditor.kt	6.38%	88 Missing ⚠️
...s/preview/imageeditor/AttachmentImageEditorView.kt	81.78%	47 Missing and 8 partials ⚠️
...impl/attachments/preview/AttachmentsPreviewView.kt	70.73%	17 Missing and 7 partials ⚠️
...attachments/preview/AttachmentsPreviewPresenter.kt	75.00%	5 Missing and 11 partials ⚠️
...es/impl/attachments/preview/AttachmentMediaInfo.kt	35.29%	8 Missing and 3 partials ⚠️
...mediaviewer/impl/local/AndroidLocalMediaFactory.kt	52.63%	4 Missing and 5 partials ⚠️
.../preview/imageeditor/AttachmentImageEditorState.kt	92.30%	0 Missing and 6 partials ⚠️
...mpl/attachments/preview/AttachmentsPreviewEvent.kt	85.71%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6842      +/-   ##
===========================================
- Coverage    81.25%   81.16%   -0.09%     
===========================================
  Files         2652     2657       +5     
  Lines        74373    75039     +666     
  Branches      9641     9735      +94     
===========================================
+ Hits         60432    60908     +476     
- Misses       10381    10534     +153     
- Partials      3560     3597      +37     

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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