From e78b2760cad97a8a730efe63ba3973783eee865c Mon Sep 17 00:00:00 2001
From: James <91348155+FrogAi@users.noreply.github.com>
Date: Wed, 17 Dec 2025 18:21:33 -0700
Subject: [PATCH] Display the turn signal/blind spot status in the screen's
 border

---
 frogpilot/ui/qt/onroad/frogpilot_onroad.cc | 49 ++++++++++++++++++++++
 frogpilot/ui/qt/onroad/frogpilot_onroad.h  | 13 ++++++
 2 files changed, 62 insertions(+)

diff --git a/frogpilot/ui/qt/onroad/frogpilot_onroad.cc b/frogpilot/ui/qt/onroad/frogpilot_onroad.cc
index 04e75d2a..88ec8504 100644
--- a/frogpilot/ui/qt/onroad/frogpilot_onroad.cc
+++ b/frogpilot/ui/qt/onroad/frogpilot_onroad.cc
@@ -1,6 +1,10 @@
 #include "frogpilot/ui/qt/onroad/frogpilot_onroad.h"
 
 FrogPilotOnroadWindow::FrogPilotOnroadWindow(QWidget *parent) : QWidget(parent) {
+  signalTimer = new QTimer(this);
+  QObject::connect(signalTimer, &QTimer::timeout, [this] {
+    flickerActive = !flickerActive;
+  });
 }
 
 void FrogPilotOnroadWindow::resizeEvent(QResizeEvent *event) {
@@ -15,9 +19,15 @@ void FrogPilotOnroadWindow::updateState(const UIState &s, const FrogPilotUIState
   const cereal::CarState::Reader &carState = sm["carState"].getCarState();
   const cereal::CarControl::Reader &carControl = fpsm["carControl"].getCarControl();
 
+  blindSpotLeft = carState.getLeftBlindspot();
+  blindSpotRight = carState.getRightBlindspot();
   torque = -carControl.getActuators().getTorque();
+  turnSignalLeft = carState.getLeftBlinker();
+  turnSignalRight = carState.getRightBlinker();
 
+  showBlindspot = (blindSpotLeft || blindSpotRight) && frogpilot_toggles.value("blind_spot_metrics").toBool();
   showFPS = frogpilot_toggles.value("show_fps").toBool();
+  showSignal = (turnSignalLeft || turnSignalRight) && frogpilot_toggles.value("signal_metrics").toBool();
   showSteering = frogpilot_toggles.value("steering_metrics").toBool();
 
   if (showSteering) {
@@ -28,6 +38,32 @@ void FrogPilotOnroadWindow::updateState(const UIState &s, const FrogPilotUIState
     }
   }
 
+  if (showBlindspot || showSignal) {
+    std::function<QColor(bool, bool)> getBorderColor = [&](bool blindSpot, bool turnSignal) {
+      if (turnSignal && showSignal) {
+        if (blindSpot) {
+          return flickerActive ? bg_colors[STATUS_TRAFFIC_MODE_ENABLED] : bg_colors[STATUS_CEM_DISABLED];
+        } else {
+          return flickerActive ? bg_colors[STATUS_CEM_DISABLED] : bg;
+        }
+      } else if (blindSpot && showBlindspot) {
+        return bg_colors[STATUS_TRAFFIC_MODE_ENABLED];
+      } else {
+        return bg;
+      }
+    };
+
+    leftBorderColor = getBorderColor(blindSpotLeft, turnSignalLeft);
+    rightBorderColor = getBorderColor(blindSpotRight, turnSignalRight);
+
+    int interval = showBlindspot ? 250 : 500;
+    if (!signalTimer->isActive() || signalTimer->interval() != interval) {
+      signalTimer->start(interval);
+    }
+  } else if (signalTimer->isActive()) {
+    signalTimer->stop();
+  }
+
   if (showFPS) {
     static float avgFPS = 0.0f;
     static float maxFPS = 0.0f;
@@ -63,6 +99,10 @@ void FrogPilotOnroadWindow::paintEvent(QPaintEvent *event) {
     paintSteeringTorqueBorder(p);
   }
 
+  if (showBlindspot || showSignal) {
+    paintTurnSignalBorder(p);
+  }
+
   if (showFPS) {
     paintFPS(p);
   }
@@ -99,3 +139,12 @@ void FrogPilotOnroadWindow::paintSteeringTorqueBorder(QPainter &p) {
 
   p.restore();
 }
+
+void FrogPilotOnroadWindow::paintTurnSignalBorder(QPainter &p) {
+  p.save();
+
+  p.fillRect(rect.x(), rect.y(), rect.width() / 2, rect.height(), leftBorderColor);
+  p.fillRect(rect.x() + rect.width() / 2, rect.y(), rect.width() / 2, rect.height(), rightBorderColor);
+
+  p.restore();
+}
diff --git a/frogpilot/ui/qt/onroad/frogpilot_onroad.h b/frogpilot/ui/qt/onroad/frogpilot_onroad.h
index fb7d7e82..1d3ff49b 100644
--- a/frogpilot/ui/qt/onroad/frogpilot_onroad.h
+++ b/frogpilot/ui/qt/onroad/frogpilot_onroad.h
@@ -22,17 +22,30 @@ private:
   void paintEvent(QPaintEvent *event);
   void paintFPS(QPainter &p);
   void paintSteeringTorqueBorder(QPainter &p);
+  void paintTurnSignalBorder(QPainter &p);
   void resizeEvent(QResizeEvent *event);
 
+  bool blindSpotLeft;
+  bool blindSpotRight;
+  bool flickerActive;
+  bool showBlindspot;
   bool showFPS;
+  bool showSignal;
   bool showSteering;
+  bool turnSignalLeft;
+  bool turnSignalRight;
 
   float smoothedSteer;
   float torque;
 
+  QColor leftBorderColor;
+  QColor rightBorderColor;
+
   QRect rect;
 
   QRegion marginRegion;
 
   QString fpsDisplayString;
+
+  QTimer *signalTimer;
 };