Zoom and slide do not mix well

[dkm]

When displaying a picture:

• zoom in
• slide to see hidden part of picture Sometimes, it will slide to the next picture in the gallery instead of moving inside the zoomed-in picture. It seems the edge of the picture is not always at the same position (sometimes when sliding, it's directly showing a black edge + next picture, sometimes there is still a bit of current picture before black+ next, sometimes it works as expected).

I'm using a Fairphone 2 with android 7 and testing the app from f-droid install 1.0.2

[ramack]

Thanks for the report, we have to look into this in detail. I just tried and I did not even manage to zoom anywhere but in the center of the photo, and I do not manage to "move" inside the picture, but always get a slide towards the next photo. @voriondev can you look into this, as you know that code best?

[jeff-amn]

@ramack I have also noticed this. I found that if you move up or down and also move left or right you can move around the zoomed image. Seems like the move left or right needs to check to see if the image is in the zoomed state or not.

[ramack]

Ah yes. The "pure" left and right slide is directly changing images, while any other direction is moving inside the photo...

[dkm]

Nice catch ! I would still tag as a bug instead of enhancement, but as long as it's fixed... ;)

[Valou447]

I've figured out how to fix this, anyway in terms of usability, should I allow user to slide between pictures even if the image is lightly zoomed, or should the zoom be null before letting the user jump to the next image ?

[dkm]

Usually, you slide to the next when you slide out of the picture. So, yes, I would favor for being able to slide to the next picture even when zoomed-in.

[dkm]

(I think you should mimic what regular gallery app are doing)