ui: don't hide sidebar twice (#28868)

* draft

* draft 2

* comment and clean up

* delete

* better name

* even better?

selfdrive/ui/qt/home.cc

@@ -34,7 +34,7 @@ HomeWindow::HomeWindow(QWidget* parent) : QWidget(parent) {
   slayout->addWidget(home);
 
   onroad = new OnroadWindow(this);
-  QObject::connect(onroad, &OnroadWindow::mapWindowShown, this, [=] { sidebar->hide(); });
+  QObject::connect(onroad, &OnroadWindow::mapPanelRequested, this, [=] { sidebar->hide(); });
   slayout->addWidget(onroad);
 
   body = new BodyWindow(this);

selfdrive/ui/qt/maps/map_panel.cc

@@ -15,6 +15,8 @@ MapPanel::MapPanel(const QMapboxGLSettings &mapboxSettings, QWidget *parent) : Q
   auto map = new MapWindow(mapboxSettings);
   QObject::connect(uiState(), &UIState::offroadTransition, map, &MapWindow::offroadTransition);
   QObject::connect(map, &MapWindow::requestVisible, [=](bool visible) {
+    // when we show the map for a new route, signal HomeWindow to hide the sidebar
+    if (visible) { emit mapPanelRequested(); }
     setVisible(visible);
   });
   QObject::connect(map, &MapWindow::openSettings, [=]() {

selfdrive/ui/qt/maps/map_panel.h

@@ -10,11 +10,8 @@ class MapPanel : public QFrame {
 public:
   explicit MapPanel(const QMapboxGLSettings &settings, QWidget *parent = nullptr);
 
-private:
-  void showEvent(QShowEvent *event) { emit mapWindowShown(); };
-
 signals:
-  void mapWindowShown();
+  void mapPanelRequested();
 
 private:
   QStackedLayout *content_stack;

selfdrive/ui/qt/onroad.cc

@@ -89,7 +89,7 @@ void OnroadWindow::offroadTransition(bool offroad) {
       auto m = new MapPanel(get_mapbox_settings());
       map = m;
 
-      QObject::connect(m, &MapPanel::mapWindowShown, this, &OnroadWindow::mapWindowShown);
+      QObject::connect(m, &MapPanel::mapPanelRequested, this, &OnroadWindow::mapPanelRequested);
 
       m->setFixedWidth(topWidget(this)->width() / 2 - UI_BORDER_SIZE);
       split->insertWidget(0, m);

selfdrive/ui/qt/onroad.h

@@ -119,7 +119,7 @@ public:
   bool isMapVisible() const { return map && map->isVisible(); }
 
 signals:
-  void mapWindowShown();
+  void mapPanelRequested();
 
 private:
   void paintEvent(QPaintEvent *event);