Merge pull request #243 from FadeApp/eink

保存打开 E-Ink 模式前的主题、翻页动画，关闭后恢复之前的配置, 现在可以切着玩了

app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt

@@ -15,6 +15,7 @@ import io.legado.app.constant.PreferKey
 import io.legado.app.help.AppConfig
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.lib.theme.ATH
+import io.legado.app.lib.theme.ThemeStore
 import io.legado.app.service.WebService
 import io.legado.app.ui.about.AboutActivity
 import io.legado.app.ui.about.DonateActivity
@@ -124,6 +125,15 @@ class MyFragment : BaseFragment(R.layout.fragment_my_config), FileChooserDialog.
                 PreferKey.einkMode -> {
                     //既然是 E-Ink 模式，为什么不一步到位呢
                     if (AppConfig.isEInkMode) {
+                        //保存开启前的设置
+                        putPrefInt("lastReadBookPageAnim", ReadBookConfig.pageAnim)
+                        putPrefInt("lastColorPrimary", ThemeStore.primaryColor(requireContext()))
+                        putPrefInt("lastColorAccent", ThemeStore.accentColor(requireContext()))
+                        putPrefInt("lastColorBackground", ThemeStore.backgroundColor(requireContext()))
+                        putPrefInt("lastColorBottomBackground", ThemeStore.bottomBackground(requireContext()))
+                        putPrefBoolean("lastIsNightTheme", AppConfig.isNightTheme)
+
+                        //设置 E-Ink 模式配置
                         ReadBookConfig.pageAnim = 4
                         putPrefInt("colorPrimary", getCompatColor(R.color.white))
                         putPrefInt("colorAccent", getCompatColor(R.color.black))
@@ -132,6 +142,15 @@ class MyFragment : BaseFragment(R.layout.fragment_my_config), FileChooserDialog.
                         AppConfig.isNightTheme = false
                         App.INSTANCE.applyDayNight()
                         postEvent(EventBus.RECREATE, "")
+                    } else {
+                        ReadBookConfig.pageAnim = getPrefInt("lastReadBookPageAnim")
+                        putPrefInt("colorPrimary", getPrefInt("lastColorPrimary"))
+                        putPrefInt("colorAccent", getPrefInt("lastColorAccent"))
+                        putPrefInt("colorBackground", getPrefInt("lastColorBackground"))
+                        putPrefInt("colorBottomBackground", getPrefInt("lastColorBottomBackground"))
+                        AppConfig.isNightTheme = getPrefBoolean("lastIsNightTheme")
+                        App.INSTANCE.applyDayNight()
+                        postEvent(EventBus.RECREATE, "")
                     }
                 }
             }