Unify touch panel handling

src/displayapp/DisplayApp.cpp

@@ -314,6 +314,10 @@ void DisplayApp::Refresh() {
         } else {
           lcd.Sleep();
         }
+        // Clear any ongoing touch pressed events
+        // Without this LVGL gets stuck in the pressed state and will keep refreshing the
+        // display activity timer causing the screen to never sleep after timeout
+        lvgl.ClearTouchState();
         PushMessageToSystemTask(Pinetime::System::Messages::OnDisplayTaskSleeping);
         state = States::Idle;
         break;
@@ -459,7 +463,7 @@ void DisplayApp::Refresh() {
     }
   }
 
-  if (touchHandler.IsTouching()) {
+  if (state == States::Running && touchHandler.IsTouching()) {
     currentScreen->OnTouchEvent(touchHandler.GetX(), touchHandler.GetY());
   }
 

src/displayapp/LittleVgl.cpp

@@ -248,6 +248,8 @@ void LittleVgl::SetNewTouchPoint(int16_t x, int16_t y, bool contact) {
   }
 }
 
+// Cancel an ongoing tap
+// Signifies that LVGL should not handle the current tap
 void LittleVgl::CancelTap() {
   if (tapped) {
     isCancelled = true;
@@ -255,6 +257,13 @@ void LittleVgl::CancelTap() {
   }
 }
 
+// Clear the current tapped state
+// Signifies that touch input processing is suspended
+void LittleVgl::ClearTouchState() {
+  touchPoint = {-1, -1};
+  tapped = false;
+}
+
 bool LittleVgl::GetTouchPadInfo(lv_indev_data_t* ptr) {
   ptr->point.x = touchPoint.x;
   ptr->point.y = touchPoint.y;

src/displayapp/LittleVgl.h

@@ -26,6 +26,7 @@ namespace Pinetime {
       void SetFullRefresh(FullRefreshDirections direction);
       void SetNewTouchPoint(int16_t x, int16_t y, bool contact);
       void CancelTap();
+      void ClearTouchState();
 
       bool GetFullRefresh() {
         bool returnValue = fullRefresh;

src/systemtask/Messages.h

@@ -6,7 +6,6 @@ namespace Pinetime {
     enum class Messages : uint8_t {
       GoToSleep,
       GoToRunning,
-      TouchWakeUp,
       OnNewTime,
       OnNewNotification,
       OnNewCall,

src/systemtask/SystemTask.cpp

@@ -198,20 +198,6 @@ void SystemTask::Work() {
         case Messages::GoToRunning:
           GoToRunning();
           break;
-        case Messages::TouchWakeUp: {
-          if (touchHandler.ProcessTouchInfo(touchPanel.GetTouchInfo())) {
-            auto gesture = touchHandler.GestureGet();
-            if (settingsController.GetNotificationStatus() != Controllers::Settings::Notification::Sleep &&
-                gesture != Pinetime::Applications::TouchEvents::None &&
-                ((gesture == Pinetime::Applications::TouchEvents::DoubleTap &&
-                  settingsController.isWakeUpModeOn(Pinetime::Controllers::Settings::WakeUpMode::DoubleTap)) ||
-                 (gesture == Pinetime::Applications::TouchEvents::Tap &&
-                  settingsController.isWakeUpModeOn(Pinetime::Controllers::Settings::WakeUpMode::SingleTap)))) {
-              GoToRunning();
-            }
-          }
-          break;
-        }
         case Messages::GoToSleep:
           GoToSleep();
           break;
@@ -260,8 +246,23 @@ void SystemTask::Work() {
           // TODO add intent of fs access icon or something
           break;
         case Messages::OnTouchEvent:
-          if (touchHandler.ProcessTouchInfo(touchPanel.GetTouchInfo())) {
+          // Finish immediately if no new events
+          if (!touchHandler.ProcessTouchInfo(touchPanel.GetTouchInfo())) {
+            break;
+          }
+          if (state == SystemTaskState::Running) {
             displayApp.PushMessage(Pinetime::Applications::Display::Messages::TouchEvent);
+          } else {
+            // If asleep, check for touch panel wake triggers
+            auto gesture = touchHandler.GestureGet();
+            if (settingsController.GetNotificationStatus() != Controllers::Settings::Notification::Sleep &&
+                gesture != Pinetime::Applications::TouchEvents::None &&
+                ((gesture == Pinetime::Applications::TouchEvents::DoubleTap &&
+                  settingsController.isWakeUpModeOn(Pinetime::Controllers::Settings::WakeUpMode::DoubleTap)) ||
+                 (gesture == Pinetime::Applications::TouchEvents::Tap &&
+                  settingsController.isWakeUpModeOn(Pinetime::Controllers::Settings::WakeUpMode::SingleTap)))) {
+              GoToRunning();
+            }
           }
           break;
         case Messages::HandleButtonEvent: {
@@ -482,14 +483,7 @@ void SystemTask::HandleButtonAction(Controllers::ButtonActions action) {
 }
 
 void SystemTask::OnTouchEvent() {
-  if (state == SystemTaskState::Running) {
   PushMessage(Messages::OnTouchEvent);
-  } else {
-    if (settingsController.isWakeUpModeOn(Pinetime::Controllers::Settings::WakeUpMode::SingleTap) or
-        settingsController.isWakeUpModeOn(Pinetime::Controllers::Settings::WakeUpMode::DoubleTap)) {
-      PushMessage(Messages::TouchWakeUp);
-    }
-  }
 }
 
 void SystemTask::PushMessage(System::Messages msg) {