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feat: tap to see next/previous image (#20286)

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* feat(mobile): tap behavior for next/previous image

This change enables switching to the next/previous photo in the photo
viewer by tapping the left/right quarter of the screen.

* Avoid animation on first/last image

* Add changes to asset_viewer.page

* Add setting for tap navigation, disable by default

Not everyone wants to have tapping for next/previous image enabled, so
this commit adds a settings toggle. Since it might be confusing behavior
for new users, it is disabled by default.

* chore: refactor

* fix: lint

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>
This commit is contained in:
Alex Balgavy
2026-02-22 06:28:17 +01:00
committed by GitHub
parent 1d25267f22
commit 8ba20cbd44
10 changed files with 120 additions and 14 deletions
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33
mobile/lib/pages/common/gallery_viewer.page.dart
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@@ -221,8 +221,37 @@ class GalleryViewerPage extends HookConsumerWidget {
onDragUpdate: (_, details, __) {
handleSwipeUpDown(details);
},
onTapDown: (_, __, ___) {
ref.read(showControlsProvider.notifier).toggle();
onTapDown: (ctx, tapDownDetails, _) {
final tapToNavigate = ref.read(appSettingsServiceProvider).getSetting<bool>(AppSettingsEnum.tapToNavigate);
if (!tapToNavigate) {
ref.read(showControlsProvider.notifier).toggle();
return;
}
double tapX = tapDownDetails.globalPosition.dx;
double screenWidth = ctx.width;
// We want to change images if the user taps in the leftmost or
// rightmost quarter of the screen
bool tappedLeftSide = tapX < screenWidth / 4;
bool tappedRightSide = tapX > screenWidth * (3 / 4);
int? currentPage = controller.page?.toInt();
int maxPage = renderList.totalAssets - 1;
if (tappedLeftSide && currentPage != null) {
// Nested if because we don't want to fallback to show/hide controls
if (currentPage != 0) {
controller.jumpToPage(currentPage - 1);
}
} else if (tappedRightSide && currentPage != null) {
// Nested if because we don't want to fallback to show/hide controls
if (currentPage != maxPage) {
controller.jumpToPage(currentPage + 1);
}
} else {
ref.read(showControlsProvider.notifier).toggle();
}
},
onLongPressStart: asset.isMotionPhoto
? (_, __, ___) {