GUI: channel pair hints, part 2

POKEY

src/engine/platform/pokey.cpp

@@ -406,6 +406,24 @@ DivMacroInt* DivPlatformPOKEY::getChanMacroInt(int ch) {
   return &chan[ch].std;
 }
 
+DivChannelPair DivPlatformPOKEY::getPaired(int ch) {
+  switch (ch) {
+    case 0:
+      if (audctl&4) return DivChannelPair("filter",2);
+      break;
+    case 1:
+      if (audctl&16) return DivChannelPair("16-bit",0);
+      break;
+    case 2:
+      if (audctl&8) return DivChannelPair("16-bit",3);
+      break;
+    case 3:
+      if (audctl&2) return DivChannelPair("filter",1);
+      break;
+  }
+  return DivChannelPair();
+}
+
 DivDispatchOscBuffer* DivPlatformPOKEY::getOscBuffer(int ch) {
   return oscBuf[ch];
 }

src/engine/platform/pokey.h

@@ -65,6 +65,7 @@ class DivPlatformPOKEY: public DivDispatch {
     int dispatch(DivCommand c);
     void* getChanState(int chan);
     DivMacroInt* getChanMacroInt(int ch);
+    DivChannelPair getPaired(int chan);
     DivDispatchOscBuffer* getOscBuffer(int chan);
     unsigned char* getRegisterPool();
     int getRegisterPoolSize();

src/gui/pattern.cpp

@@ -999,7 +999,7 @@ void FurnaceGUI::drawPattern() {
             }
           }
         }
-        chanHeadBottom=ImGui::GetCursorScreenPos().y;
+        chanHeadBottom=ImGui::GetCursorScreenPos().y-ImGui::GetStyle().ItemSpacing.y;
       }
       ImGui::TableNextColumn();
       lastPatternWidth=ImGui::GetCursorPosX()-lpwStart+ImGui::GetStyle().ScrollbarSize;