3djc/chan mon improve (#3604)

* Prepare for more flexibility (and a much better look)

* [Horus] Preparation for a new Channels menu

* monitor bar icons added

* Add ICONS structure and populate for MONITOR pages

* Restore old widget (had used it for temp work), will likely update to the newer look later

Functionnal output monitor 1,2, still need extended and overrides

* extended limits

* Overrides are now managed

* Back to Red ;)
Add outL outR to hightlight out of limits values

* Rewrite of posOnBar, as it was getting overly complex
subtrin now fulland more logicaly managed

* Fix overrides

* Center bar drawn last to be always visible

* Limits need to go through extend limits display calculation as well

* remove debug printf

* Add inverted output icon

* Tidy up and cosmetics

radio/src/gui/horus/themes/default.cpp

@@ -122,7 +122,10 @@ class DefaultTheme: public Theme
       loadMenuIcon(ICON_THEME_VIEW5, "mask_theme_view5.png");
       loadMenuIcon(ICON_THEME_ADD_VIEW, "mask_theme_add_view.png");
       loadMenuIcon(ICON_LIBRARY, "mask_library.png");
-
+      loadMenuIcon(ICON_MONITOR, "mask_monitor.png");
+      loadMenuIcon(ICON_MONITOR_OUTPUTS1, "mask_monitor_outputs1.png");
+      loadMenuIcon(ICON_MONITOR_OUTPUTS2, "mask_monitor_outputs2.png");
+      
       BitmapBuffer * background = BitmapBuffer::loadMask(getThemePath("mask_currentmenu_bg.png"));
       BitmapBuffer * shadow = BitmapBuffer::loadMask(getThemePath("mask_currentmenu_shadow.png"));
       BitmapBuffer * dot = BitmapBuffer::loadMask(getThemePath("mask_currentmenu_dot.png"));