Jerboa @lemmy.ml Lojcs @lemm.ee 2y ago

Improvement - Zooming images is difficult

Pinching the screen (especially with single hand) doesn't reliably zoom images and I have to try multiple times to get it to work

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This isn't surefire, but sometimes I'll double tap to zoom way too far in, but it'll put me in zooming mode and then I can zoom back out from there.
Are you sure this is not an issue with your phone? I can zoom just fine on Jerboa
- Nope, I have the same issue, but I have narrowed down the exact behavior.
  
  If you put 2 fingers on the screen in a fullscreen image and slide them even the tiniest millimeter it will go into "pan mode" or so instead of zooming mode. You can no longer zoom until you release your fingers and place them without moving them at all before you pinch to zoom. (I have this happen much more often in practice while using the phone 1 handed on an unstable environment like a tram or train.
  
  Interestingly, you can pan and zoom at the same time if already zoomed in, but on a full image where panning doesn't do anything, it will lock both actions until you release your fingers.
  
  I can confirm this exact behaviour.
  
  It's hard to reproduce because it is not consistent but I see what you mean. Could you link the exact image that you managed to reproduce this. I'll see if I can report this to the image library that we use.
  
  Could you test if you can still reproduce it in these builds?
  
  I have modified some code to isolate the problem.
  
  Release version of 46
  
  Depending on how you installed it might not allow you to install this release version
  
  Note replacing an existing install with this version, will probably delete your app info (it should tell you) use debug version instead if that is not wanted app-release_zoomable.zip
  
  Debug version of 46 app-debug_zoomable.zip
  
  Hm, I just tried it and it indeed does behave like you described, but only if you slide the fingers diagonally. If you slide them vertically you won't have this issue and it's the reason I didn't stumble upon it before
  
  Edit: wait, seems like this is not the case. It behaves weirdly, sometimes I can zoom just fine, sometimes sliding fingers won't zoom but do nothing.
  
  Which device do you use? It might be device specific. Hard to reproduce for me
Honestly I have never experienced this. Does it happen with specific images or is it just random? What version are you using, 0.44?
- It happens with all images, but seemingly randomly. I'm using 0.45
  
  Edit: working off of @JustEnoughDucks@feddit.nl's comment, I've found that if I move both my fingers vertically in the same direction the image doesn't respond to further movements.

25 comments