Simplify app registration with TactilityCpp (#7)

- Simplified app registration with a C++ wrapper for the TactilityC.
- Rename the various app classes from `Application` to more specific names like `Calculator` etc.

Apps/GPIO/main/Source/Gpio.cpp

@@ -1,4 +1,4 @@
-#include "Application.h"
+#include "Gpio.h"
 
 #include <tt_app_alertdialog.h>
 #include <tt_hal.h>
@@ -10,7 +10,7 @@
 
 constexpr char* TAG = "GPIO";
 
-void Application::updatePinStates() {
+void Gpio::updatePinStates() {
     tt_mutex_lock(mutex, TT_MAX_TICKS);
     // Update pin states
     for (int i = 0; i < pinStates.size(); ++i) {
@@ -19,7 +19,7 @@ void Application::updatePinStates() {
     tt_mutex_unlock(mutex);
 }
 
-void Application::updatePinWidgets() {
+void Gpio::updatePinWidgets() {
     tt_lvgl_lock();
     assert(pinStates.size() == pinWidgets.size());
     for (int j = 0; j < pinStates.size(); ++j) {
@@ -39,7 +39,7 @@ void Application::updatePinWidgets() {
     tt_lvgl_unlock();
 }
 
-lv_obj_t* Application::createGpioRowWrapper(lv_obj_t* parent) {
+lv_obj_t* Gpio::createGpioRowWrapper(lv_obj_t* parent) {
     lv_obj_t* wrapper = lv_obj_create(parent);
     lv_obj_set_style_pad_all(wrapper, 0, LV_STATE_DEFAULT);
     lv_obj_set_style_border_width(wrapper, 0, LV_STATE_DEFAULT);
@@ -49,13 +49,13 @@ lv_obj_t* Application::createGpioRowWrapper(lv_obj_t* parent) {
 
 // region Task
 
-void Application::onTimer(void* context) {
-    Application* app = static_cast<Application*>(context);
+void Gpio::onTimer(void* context) {
+    Gpio* app = static_cast<Gpio*>(context);
     app->updatePinStates();
     app->updatePinWidgets();
 }
 
-void Application::startTask() {
+void Gpio::startTask() {
     tt_mutex_lock(mutex, TT_MAX_TICKS);
     assert(timer == nullptr);
     timer = tt_timer_alloc(TimerTypePeriodic, onTimer, this);
@@ -63,7 +63,7 @@ void Application::startTask() {
     tt_mutex_unlock(mutex);
 }
 
-void Application::stopTask() {
+void Gpio::stopTask() {
     assert(timer);
 
     tt_timer_stop(timer);
@@ -81,15 +81,15 @@ static int getSquareSpacing(UiScale scale) {
     }
 }
 
-void Application::onCreate(AppHandle app) {
+void Gpio::onCreate(AppHandle app) {
     mutex = tt_mutex_alloc(MUTEX_TYPE_RECURSIVE);
 }
 
-void Application::onDestroy(AppHandle app) {
+void Gpio::onDestroy(AppHandle app) {
     tt_mutex_free(mutex);
 }
 
-void Application::onShow(AppHandle app, lv_obj_t* parent) {
+void Gpio::onShow(AppHandle app, lv_obj_t* parent) {
     // auto ui_scale = hal::getConfiguration()->uiScale;
 
     lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
@@ -171,7 +171,7 @@ void Application::onShow(AppHandle app, lv_obj_t* parent) {
     startTask();
 }
 
-void Application::onHide(AppHandle app) {
+void Gpio::onHide(AppHandle app) {
     stopTask();
 
     tt_mutex_lock(mutex, TT_MAX_TICKS);

Apps/GPIO/main/Source/Gpio.h

@@ -1,13 +1,15 @@
 #pragma once
 
-#include "tt_app.h"
-#include "tt_mutex.h"
-#include "tt_timer.h"
+#include <TactilityCpp/App.h>
+
+#include <tt_app.h>
+#include <tt_mutex.h>
+#include <tt_timer.h>
 
 #include <lvgl.h>
 #include <vector>
 
-class Application final {
+class Gpio final : public App {
 
     std::vector<lv_obj_t*> pinWidgets;
     std::vector<bool> pinStates;
@@ -19,10 +21,10 @@ class Application final {
 
 public:
 
-    void onCreate(AppHandle app);
-    void onDestroy(AppHandle app);
-    void onShow(AppHandle context, lv_obj_t* parent);
-    void onHide(AppHandle context);
+    void onCreate(AppHandle app) override;
+    void onDestroy(AppHandle app) override;
+    void onShow(AppHandle context, lv_obj_t* parent) override;
+    void onHide(AppHandle context) override;
 
     void startTask();
     void stopTask();

Apps/GPIO/main/Source/main.cpp

@@ -1,41 +1,9 @@
-#include <tt_app.h>
-#include "Application.h"
-
-static void onCreateApp(AppHandle appHandle, void* data) {
-    static_cast<Application*>(data)->onCreate(appHandle);
-}
-
-static void onDestroyApp(AppHandle appHandle, void* data) {
-    static_cast<Application*>(data)->onDestroy(appHandle);
-}
-
-static void onShowApp(AppHandle appHandle, void* data, lv_obj_t* parent) {
-    static_cast<Application*>(data)->onShow(appHandle, parent);
-}
-
-static void onHideApp(AppHandle appHandle, void* data) {
-    static_cast<Application*>(data)->onHide(appHandle);
-}
-
-static void* createAppData() {
-    return new Application();
-}
-
-static void destroyAppData(void* app) {
-    delete static_cast<Application*>(app);
-}
+#include "Gpio.h"
 
 extern "C" {
 
 int main(int argc, char* argv[]) {
-    tt_app_register((AppRegistration) {
-        .createData = createAppData,
-        .destroyData = destroyAppData,
-        .onCreate = onCreateApp,
-        .onDestroy = onDestroyApp,
-        .onShow = onShowApp,
-        .onHide = onHideApp,
-    });
+    registerApp<Gpio>();
     return 0;
 }