touchhandler: Remove LVGL dependency

Move LVGL specific code to the LittleVgl class

src/displayapp/DisplayApp.cpp

@@ -222,6 +222,7 @@ void DisplayApp::Refresh() {
         if (state != States::Running) {
           break;
         }
+        lvgl.SetNewTouchPoint(touchHandler.GetX(), touchHandler.GetY(), touchHandler.IsTouching());
         auto gesture = touchHandler.GestureGet();
         if (gesture == TouchEvents::None) {
           break;
@@ -261,7 +262,7 @@ void DisplayApp::Refresh() {
             LoadPreviousScreen();
           }
         } else {
-          touchHandler.CancelTap();
+          lvgl.CancelTap();
         }
       } break;
       case Messages::ButtonPushed:
@@ -339,7 +340,7 @@ void DisplayApp::LoadNewScreen(Apps app, DisplayApp::FullRefreshDirections direc
 }
 
 void DisplayApp::LoadScreen(Apps app, DisplayApp::FullRefreshDirections direction) {
-  touchHandler.CancelTap();
+  lvgl.CancelTap();
   ApplyBrightness();
 
   currentScreen.reset(nullptr);

src/displayapp/LittleVgl.cpp

@@ -179,15 +179,34 @@ void LittleVgl::FlushDisplay(const lv_area_t* area, lv_color_t* color_p) {
   lv_disp_flush_ready(&disp_drv);
 }
 
-void LittleVgl::SetNewTouchPoint(uint16_t x, uint16_t y, bool contact) {
-  tap_x = x;
-  tap_y = y;
-  tapped = contact;
+void LittleVgl::SetNewTouchPoint(int16_t x, int16_t y, bool contact) {
+  if (contact) {
+    if (!isCancelled) {
+      touchPoint = {x, y};
+      tapped = true;
+    }
+  } else {
+    if (isCancelled) {
+      touchPoint = {-1, -1};
+      tapped = false;
+      isCancelled = false;
+    } else {
+      touchPoint = {x, y};
+      tapped = false;
+    }
+  }
+}
+
+void LittleVgl::CancelTap() {
+  if (tapped) {
+    isCancelled = true;
+    touchPoint = {-1, -1};
+  }
 }
 
 bool LittleVgl::GetTouchPadInfo(lv_indev_data_t* ptr) {
-  ptr->point.x = tap_x;
-  ptr->point.y = tap_y;
+  ptr->point.x = touchPoint.x;
+  ptr->point.y = touchPoint.y;
   if (tapped) {
     ptr->state = LV_INDEV_STATE_PR;
   } else {

src/displayapp/LittleVgl.h

@@ -23,7 +23,8 @@ namespace Pinetime {
       void FlushDisplay(const lv_area_t* area, lv_color_t* color_p);
       bool GetTouchPadInfo(lv_indev_data_t* ptr);
       void SetFullRefresh(FullRefreshDirections direction);
-      void SetNewTouchPoint(uint16_t x, uint16_t y, bool contact);
+      void SetNewTouchPoint(int16_t x, int16_t y, bool contact);
+      void CancelTap();
 
       bool GetFullRefresh() {
         bool returnValue = fullRefresh;
@@ -58,9 +59,9 @@ namespace Pinetime {
       uint16_t writeOffset = 0;
       uint16_t scrollOffset = 0;
 
-      uint16_t tap_x = 0;
-      uint16_t tap_y = 0;
+      lv_point_t touchPoint = {0};
       bool tapped = false;
+      bool isCancelled = false;
     };
   }
 }