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fix(terminal): increase wheel scroll sensitivity #257

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Merged
johannesjo merged 3 commits into from
Aug 14, 2026
Merged

fix(terminal): increase wheel scroll sensitivity #257

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100e427
fix(terminal): increase wheel scroll sensitivity
LarryHu0217 Aug 9, 2026
a957eb5
chore(terminal): drop no-op fastScrollSensitivity and constant test
johannesjo Aug 14, 2026
238abb7
fix(terminal): lower scroll sensitivity to 2 after testing
johannesjo Aug 14, 2026
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4 changes: 2 additions & 2 deletions src/components/TerminalView.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ import { TerminalBookmarkGutter } from './TerminalBookmarks';
import { invoke, fireAndForget, Channel } from '../lib/ipc';
import { IPC } from '../../electron/ipc/channels';
import { getTerminalFontFamily } from '../lib/fonts';
import { TERMINAL_SCROLLBACK_LINES, base64ToUint8Array } from '../lib/terminalConstants';
import { TERMINAL_SCROLL_OPTIONS, base64ToUint8Array } from '../lib/terminalConstants';
import {
getTerminalSearchDecorations,
getTerminalTheme,
Expand Down Expand Up @@ -418,7 +418,7 @@ export function TerminalView(props: TerminalViewProps) {
fontFamily: getTerminalFontFamily(store.terminalFont),
theme: activeTerminalTheme(),
allowProposedApi: true,
scrollback: TERMINAL_SCROLLBACK_LINES,
...TERMINAL_SCROLL_OPTIONS,
disableStdin: taskPtyDetached(),
linkHandler: {
activate: openTerminalHttpLinkWithModifier,
Expand Down
8 changes: 7 additions & 1 deletion src/lib/terminalConstants.ts
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Original file line number Diff line number Diff line change
@@ -1,6 +1,12 @@
// Keep substantially more terminal history available for agent review/debugging
// without turning xterm into a memory landfill.
export const TERMINAL_SCROLLBACK_LINES = 10_000;
// xterm defaults scrollSensitivity to 1 line per wheel notch, which makes scrolling
// back through agent output painfully slow. Alt-scroll multiplies this again by
// xterm's fastScrollSensitivity default of 5, so we leave that one alone.
export const TERMINAL_SCROLL_OPTIONS = {
scrollback: 10_000,
scrollSensitivity: 2,
} as const;

// Pre-computed base64 lookup table — avoids atob() intermediate string allocation.
const B64_LOOKUP = new Uint8Array(128);
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4 changes: 2 additions & 2 deletions src/remote/AgentDetail.tsx
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
import { onMount, onCleanup, createSignal, createEffect, untrack, Show, For } from 'solid-js';
import { Terminal } from '@xterm/xterm';
import { FitAddon } from '@xterm/addon-fit';
import { TERMINAL_SCROLLBACK_LINES, base64ToUint8Array } from '../lib/terminalConstants';
import { TERMINAL_SCROLL_OPTIONS, base64ToUint8Array } from '../lib/terminalConstants';
import { createTerminalHttpLinkHandler } from '../lib/terminalLinks';
import { fetchNotes, saveNotes } from './api';
import { agentStatusDisplay } from './attention';
Expand Down Expand Up @@ -209,7 +209,7 @@ export function AgentDetail(props: AgentDetailProps) {
fontSize: 10,
fontFamily: TERM_FONT_FAMILY,
theme: { background: '#0b0f14' },
scrollback: TERMINAL_SCROLLBACK_LINES,
...TERMINAL_SCROLL_OPTIONS,
cursorBlink: false,
disableStdin: true,
convertEol: false,
Expand Down
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