Add an optional help text to CheckboxList to explain that resources are missing

src/displayapp/screens/CheckboxList.cpp

@@ -1,6 +1,7 @@
 #include "displayapp/DisplayApp.h"
 #include "displayapp/screens/CheckboxList.h"
 #include "displayapp/screens/Styles.h"
+#include "displayapp/InfiniTimeTheme.h"
 
 using namespace Pinetime::Applications::Screens;
 
@@ -17,7 +18,8 @@ CheckboxList::CheckboxList(const uint8_t screenID,
                            const char* optionsSymbol,
                            uint32_t originalValue,
                            std::function<void(uint32_t)> OnValueChanged,
-                           std::array<Item, MaxItems> options)
+                           std::array<Item, MaxItems> options,
+                           const char* optionsHelptext)
   : screenID {screenID},
     OnValueChanged {std::move(OnValueChanged)},
     options {options},
@@ -53,6 +55,17 @@ CheckboxList::CheckboxList(const uint8_t screenID,
   lv_label_set_align(icon, LV_LABEL_ALIGN_CENTER);
   lv_obj_align(icon, title, LV_ALIGN_OUT_LEFT_MID, -10, 0);
 
+  lv_obj_t* helptext;
+  if (optionsHelptext != nullptr) {
+    helptext = lv_label_create(lv_scr_act(), nullptr);
+    lv_label_set_align(helptext, LV_LABEL_ALIGN_CENTER);
+    lv_label_set_long_mode(helptext, LV_LABEL_LONG_SROLL_CIRC);
+    lv_obj_set_width(helptext, LV_HOR_RES);
+    lv_obj_set_style_local_text_color(helptext, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, Colors::lightGray);
+    lv_label_set_text_static(helptext, optionsHelptext);
+    lv_obj_align(helptext, lv_scr_act(), LV_ALIGN_IN_BOTTOM_MID, 0, 0);
+  }
+
   for (unsigned int i = 0; i < options.size(); i++) {
     if (strcmp(options[i].name, "")) {
       cbOption[i] = lv_checkbox_create(container1, nullptr);

src/displayapp/screens/CheckboxList.h

@@ -27,7 +27,8 @@ namespace Pinetime {
                      const char* optionsSymbol,
                      uint32_t originalValue,
                      std::function<void(uint32_t)> OnValueChanged,
-                     std::array<Item, MaxItems> options);
+                     std::array<Item, MaxItems> options,
+                     const char* optionsHelptext = nullptr);
         ~CheckboxList() override;
         void UpdateSelected(lv_obj_t* object, lv_event_t event);
 

src/displayapp/screens/settings/SettingWatchFace.cpp

@@ -8,6 +8,7 @@ using namespace Pinetime::Applications::Screens;
 
 constexpr const char* SettingWatchFace::title;
 constexpr const char* SettingWatchFace::symbol;
+constexpr const char* SettingWatchFace::helptext;
 
 namespace {
   uint32_t IndexOf(const std::array<Pinetime::Applications::Screens::SettingWatchFace::Item,
@@ -70,12 +71,14 @@ bool SettingWatchFace::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
 
 std::unique_ptr<Screen> SettingWatchFace::CreateScreen(unsigned int screenNum) const {
   std::array<Screens::CheckboxList::Item, settingsPerScreen> watchfacesOnThisScreen;
+  bool needsHelptext = false;
   for (int i = 0; i < settingsPerScreen; i++) {
     if (i + (screenNum * settingsPerScreen) >= watchfaceItems.size()) {
       watchfacesOnThisScreen[i] = {"", false};
     } else {
       auto& item = watchfaceItems[i + (screenNum * settingsPerScreen)];
       watchfacesOnThisScreen[i] = Screens::CheckboxList::Item {item.name, item.enabled};
+      needsHelptext |= !item.enabled;
     }
   }
 
@@ -89,5 +92,6 @@ std::unique_ptr<Screen> SettingWatchFace::CreateScreen(unsigned int screenNum) c
       settings.SetWatchFace(IndexToWatchFace(watchfaceItems, index));
       settings.SaveSettings();
     },
-    watchfacesOnThisScreen);
+    watchfacesOnThisScreen,
+    needsHelptext ? helptext : nullptr);
 }

src/displayapp/screens/settings/SettingWatchFace.h

@@ -46,6 +46,7 @@ namespace Pinetime {
 
         static constexpr const char* title = "Watch face";
         static constexpr const char* symbol = Symbols::home;
+        static constexpr const char* helptext = "  Resources missing! Install resource pack to use greyed out watch faces.";
 
         ScreenList<nScreens> screens;
       };