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feat(cli): implement automatic theme switching based on terminal background (#17976)

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Co-authored-by: Jacob Richman <jacob314@gmail.com>
This commit is contained in:
Abhijit Balaji
2026-02-02 16:39:17 -08:00
committed by GitHub
parent f57fd642df
commit 4e4a55be35
18 changed files with 807 additions and 93 deletions
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23
packages/cli/src/ui/utils/terminalCapabilityManager.ts
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@@ -14,6 +14,7 @@ import {
enableBracketedPasteMode,
disableBracketedPasteMode,
} from '@google/gemini-cli-core';
import { parseColor } from '../themes/color-utils.js';
export type TerminalBackgroundColor = string | undefined;
@@ -36,7 +37,7 @@ export class TerminalCapabilityManager {
// eslint-disable-next-line no-control-regex
private static readonly DEVICE_ATTRIBUTES_REGEX = /\x1b\[\?(\d+)(;\d+)*c/;
// OSC 11 response: OSC 11 ; rgb:rrrr/gggg/bbbb ST (or BEL)
private static readonly OSC_11_REGEX =
static readonly OSC_11_REGEX =
// eslint-disable-next-line no-control-regex
/\x1b\]11;rgb:([0-9a-fA-F]{1,4})\/([0-9a-fA-F]{1,4})\/([0-9a-fA-F]{1,4})(\x1b\\|\x07)?/;
// modifyOtherKeys response: CSI > 4 ; level m
@@ -129,7 +130,7 @@ export class TerminalCapabilityManager {
const match = buffer.match(TerminalCapabilityManager.OSC_11_REGEX);
if (match) {
bgReceived = true;
this.terminalBackgroundColor = this.parseColor(
this.terminalBackgroundColor = parseColor(
match[1],
match[2],
match[3],
@@ -234,24 +235,6 @@ export class TerminalCapabilityManager {
isKittyProtocolEnabled(): boolean {
return this.kittyEnabled;
}
private parseColor(rHex: string, gHex: string, bHex: string): string {
const parseComponent = (hex: string) => {
const val = parseInt(hex, 16);
if (hex.length === 1) return (val / 15) * 255;
if (hex.length === 2) return val;
if (hex.length === 3) return (val / 4095) * 255;
if (hex.length === 4) return (val / 65535) * 255;
return val;
};
const r = parseComponent(rHex);
const g = parseComponent(gHex);
const b = parseComponent(bHex);
const toHex = (c: number) => Math.round(c).toString(16).padStart(2, '0');
return `#${toHex(r)}${toHex(g)}${toHex(b)}`;
}
}
export const terminalCapabilityManager =