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script: Prevent "scroll to fragment" from scrolling offscreen (#32129)

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Previously, the "scroll to fragment" operation could scroll past the end
of the screen, because the scroll position was not clamped to viewport
boundaries. Correct this by using the `Window::scroll()` method which
handles this case.

In addition, ensure that `Window`'s `current_viewport` member is
initialized properly when it is created.
This commit is contained in:
Martin Robinson 2024-04-25 02:12:16 +02:00 • committed by GitHub
parent bef6c295aa
commit 1440406e91
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6 changed files with 60 additions and 20 deletions
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8
components/script/dom/window.rs
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@ -2560,6 +2560,12 @@ impl Window {
pipelineid,
script_chan: Arc::new(Mutex::new(control_chan)),
};
let initial_viewport = f32_rect_to_au_rect(UntypedRect::new(
Point2D::zero(),
window_size.initial_viewport.to_untyped(),
));
let win = Box::new(Self {
globalscope: GlobalScope::new_inherited(
pipelineid,
@ -2602,7 +2608,7 @@ impl Window {
page_clip_rect: Cell::new(MaxRect::max_rect()),
resize_event: Default::default(),
window_size: Cell::new(window_size),
current_viewport: Cell::new(Rect::zero()),
current_viewport: Cell::new(initial_viewport.to_untyped()),
suppress_reflow: Cell::new(true),
pending_reflow_count: Default::default(),
current_state: Cell::new(WindowState::Alive),