fix(web): stop CBZ reader snapping/bouncing at chapter end on mixed-orientation books

2026-09-08 22:42:05 +08:00
parent 90b39d4f97
commit 2e43cb2423
2 changed files with 47 additions and 10 deletions
@@ -58,6 +58,9 @@ The format loosely follows Keep a Changelog and can be adapted to the team's hab

 ### Fixed / 修复

+- CBZ reader no longer snaps to the top (or visibly bounces) when scrolling or dragging the scrollbar near the end of a long chapter: re-estimating every unmeasured page from each newly measured page made the scroll geometry oscillate on books with mixed page orientations (and the correction was computed from a stale anchor), so the estimator now learns once from the first measured page and then stays put; after a geometry change the viewport is re-anchored absolutely (keep the current page under the same screen spot) instead of by a delta, and while the scrollbar is being dragged the reader doesn't write scrollTop at all, leaving the browser in sole control.
+- CBZ 阅读器在长章节末尾滚动或拖滚动条时不再出现"到底后被重置到上方"的跳变：此前每量完一页就用它重估所有未量页的高度，横竖版混排的书里估高来回翻转、滚动几何剧烈呼吸，且补偿量基于已过期的 anchor 计算；现改为估高只从首个实测页学习一次、之后保持稳定，几何变化后按"当前页钉回原屏幕位置"绝对重锚（不再用增量补偿），拖拽滚动条期间阅读器完全不写 scrollTop，避免与浏览器抢滚动控制权。
+
 - Library upload now reports the real file count: the success toast read the live `FileList` after the file input had been reset (always 0, e.g. "已上传 0 个文件"), making successful uploads look broken while waiting for the scanner; the list is snapshotted before uploading.
 - 库管理上传完成提示不再恒为「已上传 0 个文件」：此前成功提示在清空 file input 之后读取其活引用 FileList 的长度（始终为 0），上传明明成功却像没生效；现在在上传开始前对文件列表做快照，计数与遍历都用快照。