Merge d03a47ed50 into 3ce11f14ce

This can feel more natural when using the Landscape CCW orientation.

Also add "fall through" markers for GCC's -Wimplicit-fallthrough and to
improve readability.

Discussion: #449

src/CrossPointSettings.h

@@ -32,7 +32,12 @@ class CrossPointSettings {
   // Front button layout options
   // Default: Back, Confirm, Left, Right
   // Swapped: Left, Right, Back, Confirm
-  enum FRONT_BUTTON_LAYOUT { BACK_CONFIRM_LEFT_RIGHT = 0, LEFT_RIGHT_BACK_CONFIRM = 1, LEFT_BACK_CONFIRM_RIGHT = 2 };
+  enum FRONT_BUTTON_LAYOUT {
+    BACK_CONFIRM_LEFT_RIGHT = 0,
+    LEFT_RIGHT_BACK_CONFIRM = 1,
+    LEFT_BACK_CONFIRM_RIGHT = 2,
+    BACK_CONFIRM_RIGHT_LEFT = 3
+  };
 
   // Side button layout options
   // Default: Previous, Next

src/MappedInputManager.cpp

@@ -5,46 +5,59 @@
 decltype(InputManager::BTN_BACK) MappedInputManager::mapButton(const Button button) const {
   const auto frontLayout = static_cast<CrossPointSettings::FRONT_BUTTON_LAYOUT>(SETTINGS.frontButtonLayout);
   const auto sideLayout = static_cast<CrossPointSettings::SIDE_BUTTON_LAYOUT>(SETTINGS.sideButtonLayout);
-  const bool is_landscape_ccw = SETTINGS.orientation == CrossPointSettings::ORIENTATION::LANDSCAPE_CCW;
 
   switch (button) {
     case Button::Back:
       switch (frontLayout) {
         case CrossPointSettings::LEFT_RIGHT_BACK_CONFIRM:
-          return is_landscape_ccw ? InputManager::BTN_RIGHT : InputManager::BTN_LEFT;
+          return InputManager::BTN_LEFT;
         case CrossPointSettings::LEFT_BACK_CONFIRM_RIGHT:
           return InputManager::BTN_CONFIRM;
         case CrossPointSettings::BACK_CONFIRM_LEFT_RIGHT:
+          /* fall through */
+        case CrossPointSettings::BACK_CONFIRM_RIGHT_LEFT:
+          /* fall through */
         default:
           return InputManager::BTN_BACK;
       }
     case Button::Confirm:
       switch (frontLayout) {
         case CrossPointSettings::LEFT_RIGHT_BACK_CONFIRM:
-          return is_landscape_ccw ? InputManager::BTN_LEFT : InputManager::BTN_RIGHT;
+          return InputManager::BTN_RIGHT;
         case CrossPointSettings::LEFT_BACK_CONFIRM_RIGHT:
-          return is_landscape_ccw ? InputManager::BTN_RIGHT : InputManager::BTN_LEFT;
+          return InputManager::BTN_LEFT;
         case CrossPointSettings::BACK_CONFIRM_LEFT_RIGHT:
+          /* fall through */
+        case CrossPointSettings::BACK_CONFIRM_RIGHT_LEFT:
+          /* fall through */
         default:
           return InputManager::BTN_CONFIRM;
       }
     case Button::Left:
       switch (frontLayout) {
         case CrossPointSettings::LEFT_RIGHT_BACK_CONFIRM:
+          /* fall through */
         case CrossPointSettings::LEFT_BACK_CONFIRM_RIGHT:
           return InputManager::BTN_BACK;
+        case CrossPointSettings::BACK_CONFIRM_RIGHT_LEFT:
+          return InputManager::BTN_RIGHT;
         case CrossPointSettings::BACK_CONFIRM_LEFT_RIGHT:
+          /* fall through */
         default:
-          return is_landscape_ccw ? InputManager::BTN_RIGHT : InputManager::BTN_LEFT;
+          return InputManager::BTN_LEFT;
       }
     case Button::Right:
       switch (frontLayout) {
         case CrossPointSettings::LEFT_RIGHT_BACK_CONFIRM:
           return InputManager::BTN_CONFIRM;
+        case CrossPointSettings::BACK_CONFIRM_RIGHT_LEFT:
+          return InputManager::BTN_LEFT;
         case CrossPointSettings::BACK_CONFIRM_LEFT_RIGHT:
+          /* fall through */
         case CrossPointSettings::LEFT_BACK_CONFIRM_RIGHT:
+          /* fall through */
         default:
-          return is_landscape_ccw ? InputManager::BTN_LEFT : InputManager::BTN_RIGHT;
+          return InputManager::BTN_RIGHT;
       }
     case Button::Up:
       return InputManager::BTN_UP;
@@ -57,6 +70,7 @@ decltype(InputManager::BTN_BACK) MappedInputManager::mapButton(const Button butt
         case CrossPointSettings::NEXT_PREV:
           return InputManager::BTN_DOWN;
         case CrossPointSettings::PREV_NEXT:
+          /* fall through */
         default:
           return InputManager::BTN_UP;
       }
@@ -65,6 +79,7 @@ decltype(InputManager::BTN_BACK) MappedInputManager::mapButton(const Button butt
         case CrossPointSettings::NEXT_PREV:
           return InputManager::BTN_UP;
         case CrossPointSettings::PREV_NEXT:
+          /* fall through */
         default:
           return InputManager::BTN_DOWN;
       }

src/activities/settings/SettingsActivity.cpp

@@ -37,8 +37,9 @@ const SettingInfo readerSettings[readerSettingsCount] = {
 
 constexpr int controlsSettingsCount = 4;
 const SettingInfo controlsSettings[controlsSettingsCount] = {
-    SettingInfo::Enum("Front Button Layout", &CrossPointSettings::frontButtonLayout,
-                      {"Bck, Cnfrm, Lft, Rght", "Lft, Rght, Bck, Cnfrm", "Lft, Bck, Cnfrm, Rght"}),
+    SettingInfo::Enum(
+        "Front Button Layout", &CrossPointSettings::frontButtonLayout,
+        {"Bck, Cnfrm, Lft, Rght", "Lft, Rght, Bck, Cnfrm", "Lft, Bck, Cnfrm, Rght", "Bck, Cnfrm, Rght, Lft"}),
     SettingInfo::Enum("Side Button Layout (reader)", &CrossPointSettings::sideButtonLayout,
                       {"Prev, Next", "Next, Prev"}),
     SettingInfo::Toggle("Long-press Chapter Skip", &CrossPointSettings::longPressChapterSkip),