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layout: Offset Y animations for non-animated resizes

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Ivan Molodetskikh
2025-08-12 22:34:13 +03:00
parent ea438b21e9
commit e3101ced70
3 changed files with 71 additions and 31 deletions
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src/layout/scrolling.rs
+29 -6
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@@ -4056,12 +4056,35 @@ impl<W: LayoutElement> Column<W> {
// windows in the column, so they should all be animated. How should this interact with
// animated vs. non-animated resizes? For example, an animated +20 resize followed by two
// non-animated -10 resizes.
if !is_tabbed && tile.resize_animation().is_some() && offset != 0. {
for tile in &mut self.tiles[tile_idx + 1..] {
tile.animate_move_y_from_with_config(
offset,
self.options.animations.window_resize.anim,
);
if !is_tabbed && offset != 0. {
if tile.resize_animation().is_some() {
// If there's a resize animation (that may have just started in
// tile.update_window()), then the apparent size change is smooth with no sudden
// jumps. This corresponds to adding an Y animation to tiles below.
for tile in &mut self.tiles[tile_idx + 1..] {
tile.animate_move_y_from_with_config(
offset,
self.options.animations.window_resize.anim,
);
}
} else {
// There's no resize animation, but the offset is nonzero. This could happen for
// example:
// - if the window resized on its own, which we don't animate
// - if the window resized by less than 10 px (the resize threshold)
//
// The latter case could also cancel an ongoing resize animation.
//
// Now, stationary tiles below shouldn't react to this offset change in any way,
// i.e. their apparent Y position should jump together with the resize. However,
// tiles below that are already animating an Y movement should offset their
// animations to avoid the jump.
//
// Notably, this is necessary to fix the animation jump when resizing height back
// and forth in quick succession (in a way that cancels the resize animation).
for tile in &mut self.tiles[tile_idx + 1..] {
tile.offset_move_y_anim_current(offset);
}
}
}
}