AxTps
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54 lines
1.6 KiB
TypeScript
54 lines
1.6 KiB
TypeScript
import { invoke } from '@tauri-apps/api/core'
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import { ref, watch } from 'vue'
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/**
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* 启动器界面缩放（百分比）。
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* 通过 Tauri 原生 webview zoom（Rust 侧 set_zoom）应用，
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* 缩放值持久化到后端设置数据库（settings.ui_scale）。
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*/
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const MIN_UI_SCALE = 50
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const MAX_UI_SCALE = 200
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const DEFAULT_UI_SCALE = 100
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/** 把缩放值限制在允许范围内。 */
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function clampUiScale(value: number): number {
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if (!Number.isFinite(value)) return DEFAULT_UI_SCALE
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return Math.min(MAX_UI_SCALE, Math.max(MIN_UI_SCALE, Math.round(value)))
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}
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export const uiScale = ref(DEFAULT_UI_SCALE)
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export function setUiScale(value: number): void {
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uiScale.value = clampUiScale(value)
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}
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export function resetUiScale(): void {
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setUiScale(DEFAULT_UI_SCALE)
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}
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export { DEFAULT_UI_SCALE, MAX_UI_SCALE, MIN_UI_SCALE }
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/**
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* 把缩放值应用到原生 webview。
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* 同时保留 --ui-scale CSS 变量，供依赖它的样式/锚点使用。
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*/
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async function applyUiScale(value: number): Promise<void> {
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const factor = value / 100
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document.documentElement.style.setProperty('--ui-scale', String(factor))
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try {
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await invoke('plugin:settings|set_ui_scale', { factor })
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} catch (error) {
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console.warn('应用界面缩放失败', error)
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}
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}
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/**
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* 初始化缩放：应用当前值，并在变化时同步到原生 webview。
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* 初值由调用方（App 初始化流程）在读取后端设置后通过 setUiScale 覆盖。
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*/
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export function installUiScale(): void {
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void applyUiScale(uiScale.value)
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watch(uiScale, (value) => {
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void applyUiScale(value)
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})
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} |