Hide current speed in onroad UI upon screen tap

Added ability to hide the current speed by taping on it via onroad UI.

common/params.cc

@@ -254,6 +254,7 @@ std::unordered_map<std::string, uint32_t> keys = {
     {"GasRegenCmd", PERSISTENT},
     {"GoatScream", PERSISTENT},
     {"GreenLightAlert", PERSISTENT},
+    {"HideSpeed", PERSISTENT},
     {"LaneLinesWidth", PERSISTENT},
     {"LateralTune", PERSISTENT},
     {"LeadInfo", PERSISTENT},

selfdrive/ui/qt/onroad.cc

@@ -106,8 +106,16 @@ void OnroadWindow::mousePressEvent(QMouseEvent* e) {
   // FrogPilot clickable widgets
   bool widgetClicked = false;
 
+  // Hide speed button
+  QRect speedRect(rect().center().x() - 175, 50, 350, 350);
+  bool isSpeedClicked = speedRect.contains(e->pos());
+
+  if (isSpeedClicked) {
+    speedHidden = !params.getBool("HideSpeed");
+    params.putBoolNonBlocking("HideSpeed", speedHidden);
+    widgetClicked = true;
   // If the click wasn't for anything specific, change the value of "ExperimentalMode"
-  if (scene.experimental_mode_via_press && e->pos() != timeoutPoint) {
+  } else if (scene.experimental_mode_via_press && e->pos() != timeoutPoint) {
     if (clickTimer.isActive()) {
       clickTimer.stop();
       if (scene.conditional_experimental) {
@@ -552,10 +560,12 @@ void AnnotatedCameraWidget::drawHud(QPainter &p) {
   }
 
   // current speed
-  p.setFont(InterFont(176, QFont::Bold));
+  if (!speedHidden) {
-  drawText(p, rect().center().x(), 210, speedStr);
+    p.setFont(InterFont(176, QFont::Bold));
-  p.setFont(InterFont(66));
+    drawText(p, rect().center().x(), 210, speedStr);
-  drawText(p, rect().center().x(), 290, speedUnit, 200);
+    p.setFont(InterFont(66));
+    drawText(p, rect().center().x(), 290, speedUnit, 200);
+  }
 
   p.restore();
 }
@@ -1020,6 +1030,10 @@ void AnnotatedCameraWidget::initializeFrogPilotWidgets() {
 
   main_layout->addLayout(bottom_layout);
 
+  if (params.getBool("HideSpeed")) {
+    speedHidden = true;
+  }
+
   // Custom themes configuration
   themeConfiguration = {
     {1, {QString("frog_theme"), {QColor(23, 134, 68, 242), {{0.0, QBrush(QColor::fromHslF(144 / 360., 0.71, 0.31, 0.9))},

selfdrive/ui/qt/onroad.h

@@ -16,6 +16,7 @@ const int btn_size = 192;
 const int img_size = (btn_size / 4) * 3;
 
 // FrogPilot global variables
+static bool speedHidden;
 static double fps;
 
 // ***** onroad widgets *****