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import { exec as execAsync } from 'child_process';
import { nativeImage, NativeImage, Tray } from 'electron';
import path from 'path';
import { promisify } from 'util';
import log from '../shared/logging';
import KeyframeAnimation from './keyframe-animation';
const exec = promisify(execAsync);
export type TrayIconType = 'unsecured' | 'securing' | 'secured';
type IconSets = {
regular: NativeImage[];
template: NativeImage[];
white: NativeImage[];
black: NativeImage[];
};
export default class TrayIconController {
private animation?: KeyframeAnimation;
private iconSets: IconSets = { regular: [], template: [], white: [], black: [] };
private iconSet: NativeImage[] = [];
constructor(
private tray: Tray,
private iconTypeValue: TrayIconType,
private useMonochromaticIconValue: boolean,
) {
this.loadImages();
}
public dispose() {
if (this.animation) {
this.animation.stop();
this.animation = undefined;
}
}
get iconType(): TrayIconType {
return this.iconTypeValue;
}
public async updateTheme() {
if (this.useMonochromaticIconValue) {
switch (process.platform) {
case 'darwin':
this.iconSet = this.iconSets.template;
break;
case 'win32': {
if (await this.getSystemUsesLightTheme()) {
this.iconSet = this.iconSets.black;
} else {
this.iconSet = this.iconSets.white;
}
break;
}
case 'linux':
default:
this.iconSet = this.iconSets.white;
break;
}
} else {
this.iconSet = this.iconSets.regular;
}
if (this.animation === undefined) {
this.initAnimation();
} else if (!this.animation.isRunning) {
this.animation.play({ end: this.targetFrame() });
}
}
public async setUseMonochromaticIcon(useMonochromaticIcon: boolean) {
this.useMonochromaticIconValue = useMonochromaticIcon;
await this.updateTheme();
}
public animateToIcon(type: TrayIconType) {
if (this.iconTypeValue === type || !this.animation) {
return;
}
this.iconTypeValue = type;
const animation = this.animation;
const frame = this.targetFrame();
animation.play({ end: frame });
}
private initAnimation() {
const initialFrame = this.targetFrame();
const animation = new KeyframeAnimation();
animation.speed = 100;
animation.onFrame = this.onFrame;
animation.play({ start: initialFrame, end: initialFrame });
this.animation = animation;
}
private onFrame = (frameNumber: number) => {
const frame = this.iconSet[frameNumber];
if (frame === undefined) {
log.error('Failed to show tray icon due to the icon being undefined');
} else {
this.tray.setImage(frame);
}
};
private loadImages() {
this.iconSets.regular = this.loadImageSet('');
switch (process.platform) {
case 'darwin':
this.iconSets.template = this.loadImageSet('Template');
break;
case 'win32':
this.iconSets.white = this.loadImageSet('_white');
this.iconSets.black = this.loadImageSet('_black');
break;
case 'linux':
default:
this.iconSets.white = this.loadImageSet('_white');
break;
}
}
private loadImageSet(suffix: string): NativeImage[] {
const frames = Array.from({ length: 10 }, (_, i) => i + 1);
return frames.map((frame) => nativeImage.createFromPath(this.getImagePath(frame, suffix)));
}
private getImagePath(frame: number, suffix?: string) {
const basePath = path.resolve(path.join(__dirname, '../../assets/images/menubar icons'));
const extension = process.platform === 'win32' ? 'ico' : 'png';
return path.join(basePath, process.platform, `lock-${frame}${suffix}.${extension}`);
}
private async getSystemUsesLightTheme(): Promise<boolean | undefined> {
try {
// This registry entry contains information about the tray background color. This is
// needed to decide between white and black icons.
const { stdout, stderr } = await exec(
'reg query HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize\\ /v SystemUsesLightTheme',
);
if (!stderr && stdout) {
// Split the output into rows
const rows = stdout.split('\n');
// Select the row that contains the registry entry result
const resultRow = rows.find((row) => row.includes('SystemUsesLightTheme'))?.trim();
// Split the row into words
const resultRowWords = resultRow?.split(' ').filter((word) => word !== '');
// Grab value which is last word on the result row
const value = resultRowWords && resultRowWords[resultRowWords.length - 1];
if (value) {
const parsedValue = parseInt(value);
return parsedValue === 1 ? true : false;
}
}
return undefined;
} catch (e) {
const error = e as Error;
log.error('Failed to read SystemUsesLightTheme,', error.message);
return undefined;
}
}
private targetFrame(): number {
switch (this.iconTypeValue) {
case 'unsecured':
return 0;
case 'securing':
return 9;
case 'secured':
return 8;
}
}
}
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