From ebe20c211720100b7f519a0964b5707ef67128bc Mon Sep 17 00:00:00 2001
From: mark9064 <30447455+mark9064@users.noreply.github.com>
Date: Thu, 22 Aug 2024 16:53:18 +0100
Subject: [PATCH] Clear ongoing taps when going to sleep

---
 src/displayapp/DisplayApp.cpp | 4 ++++
 src/displayapp/LittleVgl.cpp  | 9 +++++++++
 src/displayapp/LittleVgl.h    | 1 +
 3 files changed, 14 insertions(+)

diff --git a/src/displayapp/DisplayApp.cpp b/src/displayapp/DisplayApp.cpp
index ff43bb81..8171aed6 100644
--- a/src/displayapp/DisplayApp.cpp
+++ b/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;
diff --git a/src/displayapp/LittleVgl.cpp b/src/displayapp/LittleVgl.cpp
index c70a0856..c6f6f784 100644
--- a/src/displayapp/LittleVgl.cpp
+++ b/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;
diff --git a/src/displayapp/LittleVgl.h b/src/displayapp/LittleVgl.h
index 9a15ae15..54505b36 100644
--- a/src/displayapp/LittleVgl.h
+++ b/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;