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feat: scroll viewports with mouse wheel without moving the caret

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Valdemar Høgsvig Lorenzen
2026-10-10 01:23:16 +02:00
parent 455108a909
commit d8e2425c65
5 changed files with 1569 additions and 105 deletions
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docs/editing.md
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@@ -107,9 +107,15 @@ Commands: `:w [path]`, `:q`, `:q!`, `:wq [path]`, `:plugins`, and `:plugin-comma
Paste is backend input: it is ignored in Normal, Command, Search, and Visual modes, and inserts literal text in Insert mode, with CRLF/CR normalization and a 4 MiB limit. Pasted text is one undo action, separate from typing before and after it. Rejected paste reports an error without changing text, cursor, mode, or pending insert history. Internal clipboard actions are separate from `Input::Paste` and use already-validated buffer text.
## Mouse wheel scrolling
Mouse-wheel up/down scrolls the document view three rows per event without moving the primary or secondary carets, changing selections, or editing text. The caret may scroll offscreen; its terminal cursor is hidden until visible again. Navigation (including a motion blocked at the document boundary), editing, or buffer navigation restores caret-following. Idle updates and resizing preserve a wheel-scrolled view, clamped to the document.
Wheel input over a hover popup or floating/docked file explorer scrolls that panel instead. Explorer scrolling preserves the selected file, filter, and keyboard focus; keyboard input resumes selection-following. An offscreen selected entry has no browsing cursor, while the filter input keeps its own cursor. Command palettes and startup notices consume wheel input without scrolling the background. Mouse clicks and dragging are not editing actions.
## Buffers
One buffer is visible at a time. Each retains its text, path, saved state, directed selections and primary, mode, search state, and undo/redo history. The TUI retains separate vertical/horizontal scroll offsets by stable buffer ID, adjusting them only as needed to keep the primary visible after resizing. Clipboard fragments, bindings, plugin hosts, and plugin retirement remain session-wide. Plugin context and effects refer to the active buffer.
One buffer is visible at a time. Each retains its text, path, saved state, directed selections and primary, mode, search state, and undo/redo history. The TUI retains separate vertical/horizontal scroll offsets by stable buffer ID. Caret-following adjusts them as needed; mouse-wheel scrolling can temporarily detach the view from the caret. Clipboard fragments, bindings, plugin hosts, and plugin retirement remain session-wide. Plugin context and effects refer to the active buffer.
| Command | Behavior |
| --- | --- |