Online image preview support

[VitorVieiraZ]

When loading a photo, we now also verify if it's a url. If the url is valid, we consider it a valid image and proceed to load it. Since some urls might take longer to load, which is beyond our control, a MMBusyIndicator has been added to MMPhoto to enhance user experience in cases where loading images from urls might take a while.

Screen.Recording.2025-02-19.at.18.36.12.mov

Remote image loading with error

Resolves #2718

[github-actions]

Pull Request Test Coverage Report for Build 13921058469

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 64 unchanged lines in 3 files lost coverage.
• Overall coverage increased (+0.1%) to 60.352%

---

Files with Coverage Reduction	New Missed Lines	%
input/app/inpututils.cpp	6	52.54%
input/core/merginapi.cpp	8	79.68%
input/app/mmstyle.h	50	1.94%

Totals
Change from base Build 13587741405:	0.1%
Covered Lines:	8025
Relevant Lines:	13297

---

💛 - Coveralls

[PeterPetrik]

please rebase with master (cppcheck fix)

[tomasMizera]

In case of error, can we use the error text message to say that we could not load the image?

[tomasMizera]

Just this one change please 😇

[VitorVieiraZ]

Suggested project for testing: https://app.merginmaps.com/projects/support/save_images_to_web.

[harminius]

Tested on Android 📗
Tested for

• a public image link (https://www.northrivergeographic.com/wp-content/uploads/2024/05/mergin-logo-small-2793196391.png) 🟢
• S3 link (https://rp-test-media-sync.s3.eu-west-1.amazonaws.com/public/Screenshot+from+2025-03-18+15-36-24.png) 🟢
• Google drive 🔴 (https://drive.google.com/file/d/1Xenct9UGIubJNgawErWaUCfln7edqrc8/view?usp=drive_link)
  • for QGIS preview see video 😮
  • app gives Could not load the image error

Screencast.from.20-03-25.08.19.37.webm

[tomasMizera]

* Google drive 🔴 (https://drive.google.com/file/d/1Xenct9UGIubJNgawErWaUCfln7edqrc8/view?usp=drive_link)
  * app gives `Could not load the image error`

Thanks @harminius! For Google drive, I suspect it is because GDrive does a redirect when visiting the image. Could you try it with the final link please (https://drive.google.com/file/d/1Xenct9UGIubJNgawErWaUCfln7edqrc8/view)?

Screencast.from.20-03-25.08.19.37.webm

That's sick 🙃 I guess QGIS is using webview then

[harminius]

I tried the final link, too. Not sure what QGIS showed but the mobile app didn't loaded the image.

EDIT: It does the same. Webview for QGIS and fail for the app.

[tomasMizera]

I tried the final link, too. Not sure what QGIS showed but the mobile app didn't loaded the image.

EDIT: It does the same. Webview for QGIS and fail for the app.

Ok, I checked and it seems like downloading a public file from GDrive is actually not that easy :) (see https://stackoverflow.com/a/30783921/7875594). Let's merge this one then!