1 files changed, 85 insertions, 0 deletions
diff --git a/src/buttonhandler/ButtonHandler.cpp b/src/buttonhandler/ButtonHandler.cpp
new file mode 100644
index 0000000..997409e
--- /dev/null
+++ b/src/buttonhandler/ButtonHandler.cpp
@@ -0,0 +1,85 @@
+#include "ButtonHandler.h"
+
+using namespace Pinetime::Controllers;
+
+void ButtonTimerCallback(TimerHandle_t xTimer) {
+  auto* buttonHandler = static_cast<ButtonHandler*>(pvTimerGetTimerID(xTimer));
+  buttonHandler->HandleEvent(ButtonHandler::Timer);
+}
+
+void ButtonHandler::Init(Pinetime::System::SystemTask* systemTask) {
+  this->systemTask = systemTask;
+  buttonTimer = xTimerCreate("buttonTimer", 0, pdFALSE, this, ButtonTimerCallback);
+}
+
+void ButtonHandler::HandleEvent(events event) {
+  static constexpr TickType_t doubleClickTime = pdMS_TO_TICKS(200);
+  static constexpr TickType_t longPressTime = pdMS_TO_TICKS(400);
+  static constexpr TickType_t longerPressTime = pdMS_TO_TICKS(2000);
+
+  if (systemTask->IsSleeping()) {
+    // This is for faster wakeup, sacrificing special longpress and doubleclick handling while sleeping
+    systemTask->PushMessage(System::Messages::GoToRunning);
+  } else {
+    systemTask->PushMessage(System::Messages::ReloadIdleTimer);
+  }
+
+  if (event == Press) {
+    buttonPressed = true;
+  } else if (event == Release) {
+    releaseTime = xTaskGetTickCount();
+    buttonPressed = false;
+  }
+
+  switch (state) {
+    case Idle:
+      if (event == Press) {
+        xTimerChangePeriod(buttonTimer, doubleClickTime, 0);
+        xTimerStart(buttonTimer, 0);
+        state = Pressed;
+      }
+      break;
+    case Pressed:
+      if (event == Press) {
+        if (xTaskGetTickCount() - releaseTime < doubleClickTime) {
+          systemTask->PushMessage(System::Messages::OnButtonDoubleClicked);
+          xTimerStop(buttonTimer, 0);
+          state = Idle;
+        }
+      } else if (event == Release) {
+        xTimerChangePeriod(buttonTimer, doubleClickTime, 0);
+        xTimerStart(buttonTimer, 0);
+      } else if (event == Timer) {
+        if (buttonPressed) {
+          xTimerChangePeriod(buttonTimer, longPressTime - doubleClickTime, 0);
+          xTimerStart(buttonTimer, 0);
+          state = Holding;
+        } else {
+          systemTask->PushMessage(System::Messages::OnButtonPushed);
+          state = Idle;
+        }
+      }
+      break;
+    case Holding:
+      if (event == Release) {
+        systemTask->PushMessage(System::Messages::OnButtonPushed);
+        xTimerStop(buttonTimer, 0);
+        state = Idle;
+      } else if (event == Timer) {
+        xTimerChangePeriod(buttonTimer, longerPressTime - longPressTime - doubleClickTime, 0);
+        xTimerStart(buttonTimer, 0);
+        systemTask->PushMessage(System::Messages::OnButtonLongPressed);
+        state = LongHeld;
+      }
+      break;
+    case LongHeld:
+      if (event == Release) {
+        xTimerStop(buttonTimer, 0);
+        state = Idle;
+      } else if (event == Timer) {
+        systemTask->PushMessage(System::Messages::OnButtonLongerPressed);
+        state = Idle;
+      }
+      break;
+  }
+}