emit signals

selfdrive/ui/qt/maps/map.cc

@@ -73,6 +73,16 @@ MapWindow::~MapWindow() {
   makeCurrent();
 }
 
+void MapWindow::hideEvent(QHideEvent *event) {
+  emit mapVisibilitySignal(false);
+  QOpenGLWidget::hideEvent(event);
+}
+
+void MapWindow::showEvent(QHideEvent *event) {
+  emit mapVisibilitySignal(true);
+  QOpenGLWidget::showEvent(event);
+}
+
 void MapWindow::initLayers() {
   // This doesn't work from initializeGL
   if (!m_map->layerExists("modelPathLayer")) {

selfdrive/ui/qt/maps/map.h

@@ -80,6 +80,9 @@ class MapWindow : public QOpenGLWidget {
   void paintGL() final;
   void resizeGL(int w, int h) override;
 
+  void hideEvent(QHideEvent *event);
+  void showEvent(QHideEvent *event);
+
   QMapboxGLSettings m_settings;
   QScopedPointer<QMapboxGL> m_map;
 
@@ -144,5 +147,6 @@ public slots:
   void distanceChanged(float distance);
   void instructionsChanged(QMap<QString, QVariant> banner, bool full);
   void ETAChanged(float seconds, float seconds_typical, float distance);
+  void mapVisibilitySignal(bool visible);
 };
 

selfdrive/ui/qt/onroad.cc

@@ -75,8 +75,6 @@ void OnroadWindow::updateState(const UIState &s) {
 }
 
 void OnroadWindow::offroadTransition(bool offroad) {
-  buttons->setFixedWidth(width() / 2 - bdr_s);
-
 #ifdef ENABLE_MAPS
   if (!offroad) {
     QString token = QString::fromStdString(Params().get("MapboxToken"));
@@ -93,6 +91,7 @@ void OnroadWindow::offroadTransition(bool offroad) {
       QObject::connect(this, &OnroadWindow::offroadTransitionSignal, m, &MapWindow::offroadTransition);
       split->addWidget(m, 0, Qt::AlignRight);
       map = m;
+      QObject::connect(map, &MapWindow::mapVisibilitySignal, buttons, &ButtonsWindow::mapVisibilityChanged)
     }
   }
 #endif
@@ -155,6 +154,15 @@ void ButtonsWindow::updateState(const UIState &s) {
 //  updateMlButton(s.scene.dfButtonStatus);  // update model longitudinal button  // TODO: add model long back first
 }
 
+void ButtonsWindow::mapVisibilityChanged(bool visible) {
+  qDebug() << "Map visible:" << visible << "setting width to:" << width;
+  if (visible) {
+    buttons->setFixedWidth(width() / 2 - bdr_s);
+  } else {
+    buttons->setFixedWidth(width() / 2 - bdr_s);
+  }
+}
+
 void ButtonsWindow::updateDfButton(int status) {
   if (dfStatus != status) {  // updates (resets) on car start, or on button press
     dfStatus = status;

selfdrive/ui/qt/onroad.h

@@ -31,6 +31,7 @@ class ButtonsWindow : public QWidget {
 
 public slots:
   void updateState(const UIState &s);
+  void mapVisibilityChanged(bool visible);
 };
 
 class OnroadAlerts : public QWidget {