1.12.3 - Minor issue with the Up/Down hotkeys

[adrem85]

I have discovered minor issue with the Up/Down hotkeys when they are used to switch frames in animated or multi-page formats (GIF, AVIF, TIFF, WEBP).

If you assign the Up/Down keys to the Previous/Next page action, it doesn't works as expected. For instance, if you open an animated GIF and immediately press this hotkey, it navigates to the previous file instead of the do nothing (which would be logical behavior for a multi-page file). In other words, once scrolling reaches the first or last frame(page) - instead of stopping - it transitions to the previous/next file.

I can only assume that this occurs because, by default, the program uses the Up and Down keys - just like the Right and Left keys - to navigate between files in a directory. However, for multi-page files, this is inconvenient and "breaks" the process of viewing frames/pages.

If the program allows you to assign these keys to navigate through frames, and not through files in a directory, then they should perform this (and only this) function for the user who specifically assigned them for this purpose. Instead, at the moment, the user receives “two in one” - also unnecessary file navigation.

These issues do not occur if you assign different hotkeys, for example, 1 and 2.

Is it possible to make the behavior of the Up/Down keys for multi-page files consistent with that of all other hotkeys - that is, to prevent them from moving to the next or previous file when the last or first frame (page) is reached?