feat: 更详细的横竖屏单双页设置

app/src/main/java/io/legado/app/help/config/AppConfig.kt

@@ -312,8 +312,8 @@ object AppConfig : SharedPreferences.OnSharedPreferenceChangeListener {
 
     val loadCoverOnlyWifi = appCtx.getPrefBoolean(PreferKey.loadCoverOnlyWifi, false)
 
-    val doublePageHorizontal: Boolean
-        get() = appCtx.getPrefBoolean(PreferKey.doublePageHorizontal, true)
+    val doublePageHorizontal: String?
+        get() = appCtx.getPrefString(PreferKey.doublePageHorizontal)
 
     var searchGroup: String
         get() = appCtx.getPrefString("searchGroup") ?: ""

app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt

@@ -612,9 +612,15 @@ object ChapterProvider {
      * 更新绘制尺寸
      */
     fun upLayout() {
-        doublePage = (viewWidth > viewHeight || appCtx.isPad)
+        when(AppConfig.doublePageHorizontal){
+            "0" -> doublePage = false
+            "1" -> doublePage = true
+            "2" -> {
+                doublePage = (viewWidth > viewHeight)
                     && ReadBook.pageAnim() != 3
-                && AppConfig.doublePageHorizontal
+            }
+        }
+
         if (viewWidth > 0 && viewHeight > 0) {
             paddingLeft = ReadBookConfig.paddingLeft.dpToPx()
             paddingTop = ReadBookConfig.paddingTop.dpToPx()

app/src/main/res/values-zh/arrays.xml

@@ -25,6 +25,12 @@
         <item>E-Ink(墨水屏)</item>
     </string-array>
 
+    <string-array name="double_page_title">
+        <item>全局单页</item>
+        <item>全局双页</item>
+        <item>横屏双页/竖屏单页</item>
+    </string-array>
+
     <string-array name="NavBarColors">
         <item>自动</item>
         <item>黑色</item>

app/src/main/res/values/array_values.xml

@@ -33,6 +33,12 @@
         <item>3</item>
     </string-array>
 
+    <string-array name="double_page_value">
+        <item>0</item>
+        <item>1</item>
+        <item>2</item>
+    </string-array>
+
     <string-array name="language_value">
         <item>auto</item>
         <item>zh</item>

app/src/main/res/values/arrays.xml

@@ -61,6 +61,12 @@
 		<item>@string/screen_sensor</item>
 	</string-array>
 
+	<string-array name="double_page_title">
+		<item>全局单页</item>
+		<item>全局双页</item>
+		<item>横屏双页 竖屏单页</item>
+	</string-array>
+
 	<string-array name="icon_names" tools:ignore="Typos">
 		<item>iconMain</item>
 		<item>icon1</item>

app/src/main/res/xml/pref_config_read.xml

@@ -41,13 +41,16 @@
         app:iconSpaceReserved="false"
         app:isBottomBackground="true" />
 
-    <io.legado.app.lib.prefs.SwitchPreference
-        android:defaultValue="true"
-        android:title="@string/double_page_horizontal"
+    <io.legado.app.lib.prefs.NameListPreference
         android:key="doublePageHorizontal"
+        android:defaultValue="0"
+        android:title="@string/double_page_horizontal"
+        android:entries="@array/double_page_title"
+        android:entryValues="@array/double_page_value"
         app:iconSpaceReserved="false"
         app:isBottomBackground="true" />
 
+
     <io.legado.app.lib.prefs.SwitchPreference
         android:defaultValue="false"
         android:title="@string/use_zh_layout"