From a6ab1504058304012791281f9eb42c262745888f Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Fri, 19 May 2023 21:21:27 +1000
Subject: Add tinyfsm, start converting core functions to an FSM-based event
 loop

---
 src/ui/ui_fsm.cpp | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 src/ui/ui_fsm.cpp

(limited to 'src/ui/ui_fsm.cpp')

diff --git a/src/ui/ui_fsm.cpp b/src/ui/ui_fsm.cpp
new file mode 100644
index 00000000..8ca201e2
--- /dev/null
+++ b/src/ui/ui_fsm.cpp
@@ -0,0 +1,38 @@
+#include "ui_fsm.hpp"
+#include "display.hpp"
+#include "lvgl_task.hpp"
+#include "system_events.hpp"
+#include "touchwheel.hpp"
+
+namespace ui {
+
+drivers::GpioExpander* UiState::sGpioExpander;
+std::weak_ptr<drivers::TouchWheel> UiState::sTouchWheel;
+std::weak_ptr<drivers::Display> UiState::sDisplay;
+std::weak_ptr<database::Database> UiState::sDatabase;
+std::atomic<bool> UiState::sTaskQuit;
+
+auto UiState::Init(drivers::GpioExpander* gpio_expander,
+                   std::weak_ptr<drivers::TouchWheel> touchwheel,
+                   std::weak_ptr<drivers::Display> display,
+                   std::weak_ptr<database::Database> database) -> void {
+  sGpioExpander = gpio_expander;
+  sTouchWheel = touchwheel;
+  sDisplay = display;
+  sDatabase = database;
+}
+
+namespace states {
+
+void PreBoot::react(const system_fsm::DisplayReady& ev) {
+  transit<Splash>([&]() { StartLvgl(sTouchWheel, sDisplay, &sTaskQuit); });
+}
+
+void Splash::react(const system_fsm::BootComplete& ev) {
+  transit<Interactive>();
+}
+
+}  // namespace states
+}  // namespace ui
+
+FSM_INITIAL_STATE(ui::UiState, ui::states::PreBoot)
-- 
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