From e4668cbf4f3fd1aa90b044474f0fec195e6d4b36 Mon Sep 17 00:00:00 2001
From: Jason Wen <haibin.wen3@gmail.com>
Date: Fri, 2 Jun 2023 21:24:15 -0400
Subject: [PATCH] ui: delay DM camera initialization when reversing (#87)

* ui: delay DM camera initialization when reversing

* faster
---
 selfdrive/ui/qt/onroad.cc | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/selfdrive/ui/qt/onroad.cc b/selfdrive/ui/qt/onroad.cc
index 99638c4773a708..ddd03ff5dd0b70 100644
--- a/selfdrive/ui/qt/onroad.cc
+++ b/selfdrive/ui/qt/onroad.cc
@@ -562,7 +562,19 @@ void AnnotatedCameraWidget::updateState(const UIState &s) {
     setProperty("curveSign", lp.getTurnSign());
   }
 
-  setProperty("reversing", int(car_state.getGearShifter()) == 4);
+  static int reverse_delay = 0;
+  bool reverse_allowed = false;
+  if (int(car_state.getGearShifter()) != 4) {
+    reverse_delay = 0;
+    reverse_allowed = false;
+  } else {
+    reverse_delay += 50;
+    if (reverse_delay >= 1000) {
+      reverse_allowed = true;
+    }
+  }
+
+  setProperty("reversing", reverse_allowed);
 
   // DM icon transition
   dm_fade_state = fmax(0.0, fmin(1.0, dm_fade_state+0.2*(0.5-(float)(dmActive))));