UI: Indicate when Nav on OP is enabled (#28665)

* Indicate whether nav is enabled in UI

* update border spacing on both enabled and navEnabled change

* update less

* more

* cleanup

* simplify

* fix

---------

Co-authored-by: Cameron Clough <cameronjclough@gmail.com>
old-commit-hash: a66135665c

selfdrive/ui/qt/onroad.cc

@@ -64,9 +64,20 @@ void OnroadWindow::updateState(const UIState &s) {
 
   nvg->updateState(s);
 
-  if (bg != bgColor) {
+  // update spacing
+  bool navDisabledNow = (*s.sm)["controlsState"].getControlsState().getEnabled() &&
+                        !(*s.sm)["modelV2"].getModelV2().getNavEnabled();
+  if (navDisabled != navDisabledNow) {
+    split->setSpacing(navDisabledNow ? bdr_s * 2 : 0);
+    if (map) {
+      map->setFixedWidth(topWidget(this)->width() / 2 - bdr_s * (navDisabledNow ? 2 : 1));
+    }
+  }
+
   // repaint border
+  if (bg != bgColor || navDisabled != navDisabledNow) {
     bg = bgColor;
+    navDisabled = navDisabledNow;
     update();
   }
 }
@@ -79,6 +90,7 @@ void OnroadWindow::mousePressEvent(QMouseEvent* e) {
       return;
     }
     map->setVisible(!sidebarVisible && !map->isVisible());
+    update();
   }
 #endif
   // propagation event to parent(HomeWindow)
@@ -109,6 +121,13 @@ void OnroadWindow::offroadTransition(bool offroad) {
 void OnroadWindow::paintEvent(QPaintEvent *event) {
   QPainter p(this);
   p.fillRect(rect(), QColor(bg.red(), bg.green(), bg.blue(), 255));
+
+  if (isMapVisible() && navDisabled) {
+    QRect map_r = uiState()->scene.map_on_left
+                    ? QRect(0, 0, width() / 2, height())
+                    : QRect(width() / 2, 0, width() / 2, height());
+    p.fillRect(map_r, bg_colors[STATUS_DISENGAGED]);
+  }
 }
 
 // ***** onroad widgets *****

selfdrive/ui/qt/onroad.h

@@ -128,6 +128,7 @@ private:
   QColor bg = bg_colors[STATUS_DISENGAGED];
   QWidget *map = nullptr;
   QHBoxLayout* split;
+  bool navDisabled = false;
 
 private slots:
   void offroadTransition(bool offroad);