Squash of branch setup

main/display/lvgl_handler.h

@@ -0,0 +1,40 @@
+#pragma once
+#include "lvgl.h"
+#include "esp_lvgl_port.h"
+#include "display/eink_display_handler.h"
+#include "freertos/semphr.h"
+#include "freertos/event_groups.h"
+#include "esp_err.h"
+#include <memory>
+
+class LVGLHandler {
+public:
+  LVGLHandler(
+    // an owning pointer to the display handler
+    // The display handler must outlive the LVGLHandler
+    // The display handler must be fully initialized before calling initLVGLDisplay
+    std::unique_ptr<EInkDisplayHandler> display_handler_in
+  );
+  ~LVGLHandler();
+  esp_err_t initLVGL(EventGroupHandle_t system_event_group = nullptr);
+
+private:
+  void rounder_cb_(lv_display_t* disp, lv_area_t* area);
+  void flush_cb_(lv_display_t* disp, const lv_area_t* area, uint8_t* px_map);
+  void touch_read_cb_(lv_indev_t* indev, lv_indev_data_t* data);
+  esp_err_t initLVGLDisplay_();
+  esp_err_t registerLVGLTouch_();
+  esp_err_t initLVGLPort_();
+
+  std::unique_ptr<EInkDisplayHandler> display_handler_ = nullptr;
+
+  lv_display_t* lvgl_display_ = nullptr;
+  lv_indev_t* lvgl_touch_indev_ = nullptr;
+  lv_draw_buf_t* lvgl_draw_buf_ = nullptr;
+  uint8_t* framebuffer_ = nullptr;
+  bool framebuffer_in_psram_ = false;
+  RefreshArea refresh_area_ = { 0, 0, 0, 0 };
+
+
+  SemaphoreHandle_t lvgl_mutex_ = nullptr;
+};