Qt ui: fix onboarding

selfdrive/ui/qt/offroad/onboarding.cc

@@ -24,7 +24,6 @@ QWidget * OnboardingWindow::terms_screen() {
 
   QLabel *terms = new QLabel("See terms at https://my.comma.ai/terms");
   terms->setAlignment(Qt::AlignCenter);
-  terms->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
   terms->setStyleSheet(R"(
     font-size: 75px;
     border-radius: 10px;
@@ -82,20 +81,24 @@ void OnboardingWindow::updateActiveScreen() {
   bool training_done = params.get("CompletedTrainingVersion", false).compare(LATEST_TRAINING_VERSION) == 0;
 
   if (!accepted_terms) {
-    layout->setCurrentIndex(0);
+    swidget->setCurrentIndex(0);
   } else if (!training_done) {
-    layout->setCurrentIndex(1);
+    swidget->setCurrentIndex(1);
   } else {
     emit onboardingDone();
   }
 }
 
 OnboardingWindow::OnboardingWindow(QWidget *parent) : QWidget(parent) {
-  layout = new QStackedLayout();
-  layout->addWidget(terms_screen());
-  layout->addWidget(training_screen());
+  QVBoxLayout * top_layout = new QVBoxLayout;
 
-  setLayout(layout);
+  swidget = new QStackedWidget();
+  swidget->addWidget(terms_screen());
+  swidget->addWidget(training_screen());
+
+  top_layout->addWidget(swidget);
+
+  setLayout(top_layout);
   setStyleSheet(R"(
     * {
       background-color: black;

selfdrive/ui/qt/offroad/onboarding.hpp

@@ -1,7 +1,7 @@
 #pragma once
 
 #include <QWidget>
-#include <QStackedLayout>
+#include <QStackedWidget>
 
 // TODO: this is defined in python too
 #define LATEST_TERMS_VERSION "2"
@@ -16,7 +16,7 @@ public:
 private:
   QWidget * terms_screen();
   QWidget * training_screen();
-  QStackedLayout *layout;
+  QStackedWidget *swidget;
 
 signals:
   void onboardingDone();

selfdrive/ui/qt/window.cc

@@ -174,7 +174,10 @@ void GLWindow::paintGL() {
 }
 
 void GLWindow::wake(){
-  handle_display_state(ui_state, 1, true);
+  // UI state might not be initialized yet
+  if (ui_state != nullptr){
+    handle_display_state(ui_state, 1, true);
+  }
 }
 
 void GLWindow::mousePressEvent(QMouseEvent *e) {