The pages only change in size with specific "page scale modes".
Thus, if these modes are not active, the scroll position will not be lost.
There are different cases were even with these modes active, the scroll position won't get lost (e.g. "fit width" while no page is larger than the available width), but handling these would be too cumbersome.
Ideally the relative scroll position would be preserved, however, from testing a little that seems to not work too well
* Reader: Reset bounds on window size change
19f2d993 introduced a `minWidth` to make sure sizes are consistent over
chapter changes (or when images load later), but when the window itself
changes, this makes the reader incorrectly sized
* Reader: Update size on navbar width change
This happens mostly when the bar is pinned; same effect as previous
commit
* Reader: Attempt to set the page on resize
It's not perfect, but not changing position at all seems impossible due
to how resizes are handled by the browser (since we adjust our content
to the window size)
* Simplify and abstract reader size reset
Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>
* fix: Reader page full width was not properly calculated for static navbar
Only relevant for Fit Content, this did not properly consider the navbar
when the user clamps the content to a custom width
* Refactor: Put reader min sizes to reader itself instead of chapter
This allows some logic simplification.
The `ResizeObserver` can needs to be on an element without restrictions;
previously, the observer would not see the chapter elements get smaller,
since the `min-width` prevented it from shrinking. By applying to the
outer element, we still preserve the centering (since `margin: auto` is
also applied here), but allow the chapter itself to be smaller.
* Reader: Only scroll in continuous reading modes
* Reader: clean up size tracking
Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>
* Fixup previous commit stupidness
* Reader: move `minWidth`/`minHeight` back to chapter wrapper
* Apply suggestions from code review
Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>
* Also revert `fullWidth` calculation
* Simplify `chapterViewerSize`
Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>
* Move size logic entirely to hook
---------
Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>
* Fixes two places where navbar was not considered
When set to static, the navbar consumes space, so `vw` units are not
enough.
On small screens, the `left`+`transform` approach does not work nicely,
so just use standard flex alignment, the container is already a flexbox.
* Change card also consider wide viewports
* Update src/modules/reader/components/viewer/ReaderTransitionPage.tsx
Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>
* Reader: Apply new alignment code also to horizontal scroll mode
---------
Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>
There were different issues with the direction the pages got preloaded.
- when resuming a chapter with an initial page > 1, it incorrectly preloaded leading pages instead of trailing ones.
- when going to the previous/next rendered chapter no pages got preloaded at all
In the horizontal pager loading the previous chapter caused the scroll position to get lost and instead of starting at the end of the previous chapter, the scroll position was at the very start.
This happened everytime no matter if the scroll position was at the x 0 or not before the previous chapter got visible.
Same issue can be observed in the vertical pager in case the scroll position is at y 0 before the previous chapter has been rendered.
In case a chapter only has a single page and the previous/next transition page was visible, it was not possible to go back to the chapters page, since it just opened the previous/next chapter instead
When a chapter gets opened via the chapter list in the reader, the visible chapter state gets reset.
The problem was that after this happened, the passed location state did not get reset and the "visible chapter state" constantly got reset everytime the state of a chapter changed
There can be cases where when scrolling backward/forward the first/last page never gets visible in the viewport due to a large width/height of another page.
In that case the intersection observer would never trigger and thus, the chapter wouldn't get changed.
By using the Pager, which always takes up the full width/height, this problem will not be possible, since the start/end of the Pager always enters or leaves the viewport.
In the "vertical mode" intersection changes for the left or right side of the element do not matter.
Same for "horizontal mode" the other way around.
If not handled accordingly, it would cause unwanted chapter changes.
