feat(ui): 主题切换 + 语言持久化 + About 对话框

- 新增 light/dark 主题调色板与 Windows 注册表系统主题探测 - 偏好设置对话框：主题三选一 + 语言下拉(en/zh-CN/de)，即时生效 - 持久化 Language/Theme/AutoLockMinutes/MinimizeToTray 至 YAML 顶层 - 启动时按 config 中保存的语言初始化 i18n - About 对话框展示 version/runtime/项目地址/许可证 - 全部硬编码颜色迁移到 themePalette，为深色模式做准备
2026-06-12 03:38:13 +08:00
parent c671f2115e
commit b483360778
19 changed files with 687 additions and 48 deletions
@@ -0,0 +1,136 @@
+package ui
+
+import (
+	"gioui.org/layout"
+	"gioui.org/unit"
+	"gioui.org/widget"
+	"gioui.org/widget/material"
+
+	"git.wxccs.org/iceking2nd/winauth-go/internal/i18n"
+)
+
+// preferencesDialog edits the persistent UI prefs: UI language and
+// theme. Auto-lock and minimize-to-tray live in their own bucket and
+// will appear here later.
+type preferencesDialog struct {
+	lang  string
+	theme themeMode
+
+	// Theme selection — three "radio" buttons.
+	themeSystemBt widget.Clickable
+	themeLightBt  widget.Clickable
+	themeDarkBt   widget.Clickable
+
+	// Language selection — one button per supported locale. Cheap
+	// substitute for a dropdown until Gio gains a native one.
+	langEnBt   widget.Clickable
+	langZhCNBt widget.Clickable
+	langDeBt   widget.Clickable
+
+	okBt     widget.Clickable
+	cancelBt widget.Clickable
+}
+
+// preferencesResult is what Layout's callback receives. cancel skips
+// any persistence.
+type preferencesResult struct {
+	cancel   bool
+	language string
+	theme    themeMode
+}
+
+// supportedLanguages is the closed set the prefs dialog exposes. Keep
+// in sync with internal/i18n/locales/*.toml.
+var supportedLanguages = []struct {
+	tag   string
+	label string
+}{
+	{"en", "English"},
+	{"zh-CN", "中文 (简体)"},
+	{"de", "Deutsch"},
+}
+
+func newPreferencesDialog(currentLang string, currentTheme themeMode) *preferencesDialog {
+	if currentLang == "" {
+		currentLang = "en"
+	}
+	if currentTheme == "" {
+		currentTheme = themeSystem
+	}
+	return &preferencesDialog{lang: currentLang, theme: currentTheme}
+}
+
+func (d *preferencesDialog) Layout(
+	gtx layout.Context, th *material.Theme,
+	onDone func(preferencesResult),
+) layout.Dimensions {
+	if d.cancelBt.Clicked(gtx) {
+		onDone(preferencesResult{cancel: true})
+		return layout.Dimensions{Size: gtx.Constraints.Max}
+	}
+	if d.okBt.Clicked(gtx) {
+		onDone(preferencesResult{language: d.lang, theme: d.theme})
+		return layout.Dimensions{Size: gtx.Constraints.Max}
+	}
+
+	// Map button clicks to model updates before the next layout.
+	switch {
+	case d.themeSystemBt.Clicked(gtx):
+		d.theme = themeSystem
+	case d.themeLightBt.Clicked(gtx):
+		d.theme = themeLight
+	case d.themeDarkBt.Clicked(gtx):
+		d.theme = themeDark
+	case d.langEnBt.Clicked(gtx):
+		d.lang = "en"
+	case d.langZhCNBt.Clicked(gtx):
+		d.lang = "zh-CN"
+	case d.langDeBt.Clicked(gtx):
+		d.lang = "de"
+	}
+
+	// Render one labeled "chip" — emphasised when selected, regular
+	// otherwise. Implemented as a material.Button so the click target
+	// stays generous without us hand-rolling a Pointer area.
+	chip := func(btn *widget.Clickable, label string, selected bool) layout.FlexChild {
+		return layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+			return layout.Inset{Right: unit.Dp(8), Bottom: unit.Dp(4)}.Layout(gtx,
+				func(gtx layout.Context) layout.Dimensions {
+					b := material.Button(th, btn, label)
+					if !selected {
+						b.Background = activePalette.RingBg
+						b.Color = activePalette.OnBackground
+					}
+					return b.Layout(gtx)
+				})
+		})
+	}
+
+	body := func(gtx layout.Context) layout.Dimensions {
+		return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+			layout.Rigid(material.Body1(th, i18n.T("label_theme")).Layout),
+			layout.Rigid(layout.Spacer{Height: unit.Dp(6)}.Layout),
+			layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+				return layout.Flex{Axis: layout.Horizontal}.Layout(gtx,
+					chip(&d.themeSystemBt, i18n.T("theme_system"), d.theme == themeSystem),
+					chip(&d.themeLightBt, i18n.T("theme_light"), d.theme == themeLight),
+					chip(&d.themeDarkBt, i18n.T("theme_dark"), d.theme == themeDark),
+				)
+			}),
+			layout.Rigid(layout.Spacer{Height: unit.Dp(12)}.Layout),
+			layout.Rigid(material.Body1(th, i18n.T("label_language")).Layout),
+			layout.Rigid(layout.Spacer{Height: unit.Dp(6)}.Layout),
+			layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+				return layout.Flex{Axis: layout.Horizontal}.Layout(gtx,
+					chip(&d.langEnBt, supportedLanguages[0].label, d.lang == "en"),
+					chip(&d.langZhCNBt, supportedLanguages[1].label, d.lang == "zh-CN"),
+					chip(&d.langDeBt, supportedLanguages[2].label, d.lang == "de"),
+				)
+			}),
+		)
+	}
+
+	return modalCard(gtx, th, i18n.T("dialog_preferences_title"),
+		i18n.T("btn_ok"), i18n.T("btn_cancel"),
+		&d.okBt, &d.cancelBt, body)
+}