bring this back

selfdrive/ui/.gitignore

@@ -4,6 +4,7 @@ moc_*
 translations/main_test_en.*
 
 ui
+mui
 watch3
 installer/installers/*
 qt/text

selfdrive/ui/SConscript

@@ -92,6 +92,9 @@ if GetOption('extras') and arch != "Darwin":
   # build updater UI
   qt_env.Program("qt/setup/updater", ["qt/setup/updater.cc", asset_obj], LIBS=qt_libs)
 
+  # build mui
+  qt_env.Program("mui", ["mui.cc"], LIBS=qt_libs)
+
   # build installers
   senv = qt_env.Clone()
   senv['LINKFLAGS'].append('-Wl,-strip-debug')

selfdrive/ui/mui.cc

@@ -0,0 +1,50 @@
+#include <QApplication>
+#include <QtWidgets>
+#include <QTimer>
+
+#include "cereal/messaging/messaging.h"
+#include "selfdrive/ui/ui.h"
+#include "selfdrive/ui/qt/qt_window.h"
+
+int main(int argc, char *argv[]) {
+  QApplication a(argc, argv);
+  QWidget w;
+  setMainWindow(&w);
+
+  w.setStyleSheet("background-color: black;");
+
+  // our beautiful UI
+  QVBoxLayout *layout = new QVBoxLayout(&w);
+  QLabel *label = new QLabel("〇");
+  layout->addWidget(label, 0, Qt::AlignCenter);
+
+  QTimer timer;
+  QObject::connect(&timer, &QTimer::timeout, [=]() {
+    static SubMaster sm({"deviceState", "controlsState"});
+
+    bool onroad_prev = sm.allAliveAndValid({"deviceState"}) &&
+                       sm["deviceState"].getDeviceState().getStarted();
+    sm.update(0);
+
+    bool onroad = sm.allAliveAndValid({"deviceState"}) &&
+                  sm["deviceState"].getDeviceState().getStarted();
+
+    if (onroad) {
+      label->setText("〇");
+      auto cs = sm["controlsState"].getControlsState();
+      UIStatus status = cs.getEnabled() ? STATUS_ENGAGED : STATUS_DISENGAGED;
+      label->setStyleSheet(QString("color: %1; font-size: 250px;").arg(bg_colors[status].name()));
+    } else {
+      label->setText("offroad");
+      label->setStyleSheet("color: grey; font-size: 40px;");
+    }
+
+    if ((onroad != onroad_prev) || sm.frame < 2) {
+      Hardware::set_brightness(50);
+      Hardware::set_display_power(onroad);
+    }
+  });
+  timer.start(50);
+
+  return a.exec();
+}