fergalmoran/ladybird
1
0
Fork 0
mirror of https://github.com/fergalmoran/ladybird.git synced 2026-01-07 00:56:14 +00:00
Code Issues Packages Projects Releases Wiki Activity

LibWeb: Clamp scroll offset into valid range after relayout

Browse Source 
If the layout has been recalculated and the sizes of scrollable
overflow rectangles could have changed, we need to ensure that scroll
offsets remain within the valid range.
This commit is contained in:
Aliaksandr Kalenik
2024-02-22 02:09:16 +01:00
committed by Andreas Kling
parent 155070cfd8
commit 309259aeb6
3 changed files with 45 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
Userland/Libraries/LibWeb/Layout/LayoutState.cpp
View File

@@ -352,6 +352,13 @@ void LayoutState::commit(Box& root)
continue;
auto const& box = static_cast<Layout::Box const&>(used_values.node());
measure_scrollable_overflow(box);
// The scroll offset can become invalid if the scrollable overflow rectangle has changed after layout.
// For example, if the scroll container has been scrolled to the very end and is then resized to become larger
// (scrollable overflow rect become smaller), the scroll offset would be out of bounds.
auto& paintable_box = const_cast<Painting::PaintableBox&>(*box.paintable_box());
if (!paintable_box.scroll_offset().is_zero())
paintable_box.set_scroll_offset(paintable_box.scroll_offset());
}
}