Fix a few places where deleting zones left UI with ghosts

You know like we didn't reset hot zones, or didn't reset the structure
when re-loading a patch on init and stuff like that.

Closes #1256

src-ui/app/edit-screen/components/mapping-pane/MappingDisplay.cpp

@@ -310,14 +310,21 @@ void MappingDisplay::setGroupZoneMappingSummary(const engine::Part::zoneMappingS
 void MappingDisplay::setLeadSelection(const selection::SelectionManager::ZoneAddress &za)
 {
     // but we need to call setLeadZoneBounds to make the hotspots so rename that too
+    bool foundZone{false};
     for (const auto &s : summary)
     {
         if (s.first == za)
         {
+            foundZone = true;
             if (mappingZones)
                 mappingZones->setLeadZoneBounds(s.second);
         }
     }
+
+    if (mappingZones && !foundZone)
+    {
+        mappingZones->clearLeadZoneBounds();
+    }
 }
 
 int MappingDisplay::voiceCountFor(const selection::SelectionManager::ZoneAddress &z)

src-ui/app/edit-screen/components/mapping-pane/ZoneLayoutDisplay.h

@@ -116,6 +116,15 @@ struct ZoneLayoutDisplay : juce::Component, HasEditor
         bothHotZones.push_back(corner.translated(0, r.getHeight() - 8));
     }
 
+    void clearLeadZoneBounds()
+    {
+        cacheLastZone = std::nullopt;
+        lastSelectedZone.clear();
+        keyboardHotZones.clear();
+        velocityHotZones.clear();
+        bothHotZones.clear();
+    }
+
     enum MouseState
     {
         NONE,

src/engine/engine.cpp

@@ -1040,6 +1040,7 @@ std::optional<fs::path> Engine::setupUserStorageDirectory()
 
 void Engine::sendFullRefreshToClient() const
 {
+    SCLOG("Sending full refresh");
     auto &cont = getMessageController();
     assert(cont->threadingChecker.isSerialThread());
     sendMetadataToClient();
@@ -1068,6 +1069,7 @@ void Engine::sendFullRefreshToClient() const
                 *(getMessageController()));
         }
     }
+    getSelectionManager()->sendGroupZoneMappingForSelectedPart();
     getSelectionManager()->sendClientDataForLeadSelectionState();
     getSelectionManager()->sendSelectedZonesToClient();
     getSelectionManager()->sendSelectedPartMacrosToClient();

src/messaging/client/interaction_messages.h

@@ -87,6 +87,7 @@ CLIENT_TO_SERIAL(RequestHostCallback, c2s_request_host_callback, uint64_t,
 inline void doResetEngine(bool pl, engine::Engine &e, MessageController &cont)
 {
     scxt::patch_io::initFromResourceBundle(e);
+    e.sendFullRefreshToClient();
 }
 CLIENT_TO_SERIAL(ResetEngine, c2s_reset_engine, bool, doResetEngine(payload, engine, cont));
 

src/selection/selection_manager.cpp

@@ -76,7 +76,7 @@ void SelectionManager::sendClientDataForLeadSelectionState()
         }
     }
 
-    if (p >= 0 && g >= 0)
+    if (p >= 0)
     {
         serializationSendToClient(cms::s2c_send_selected_group_zone_mapping_summary,
                                   engine.getPatch()->getPart(p)->getZoneMappingSummary(),
@@ -247,6 +247,16 @@ void SelectionManager::adjustInternalStateForAction(
     }
 }
 
+void SelectionManager::sendGroupZoneMappingForSelectedPart()
+{
+    if (selectedPart < 0 || selectedPart >= numParts)
+        return;
+
+    serializationSendToClient(cms::s2c_send_selected_group_zone_mapping_summary,
+                              engine.getPatch()->getPart(selectedPart)->getZoneMappingSummary(),
+                              *(engine.getMessageController()));
+}
+
 void SelectionManager::guaranteeConsistencyAfterDeletes(const engine::Engine &engine,
                                                         bool zoneDeleted,
                                                         const ZoneAddress &whatIDeleted)

src/selection/selection_manager.h

@@ -184,6 +184,7 @@ struct SelectionManager
     int currentlySelectedPart(const engine::Engine &e) const { return selectedPart; }
 
     void sendSelectedZonesToClient();
+    void sendGroupZoneMappingForSelectedPart();
     void sendClientDataForLeadSelectionState();
     void sendDisplayDataForZonesBasedOnLead(int part, int group, int zone);
     void sendDisplayDataForNoZoneSelected();