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tangara-fw/src/ui/include/screen.hpp

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/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#pragma once
#include <memory>
#include "core/lv_group.h"
#include "core/lv_obj.h"
#include "core/lv_obj_tree.h"
#include "lvgl.h"
namespace ui {
/*
* Base class for ever discrete screen in the app. Provides a consistent
* interface that can be used for transitioning between screens, adding them to
* back stacks, etc.
*/
class Screen {
public:
Screen() : root_(lv_obj_create(NULL)), group_(lv_group_create()) {}
virtual ~Screen() {
lv_obj_del(root_);
lv_group_del(group_);
}
/*
* Called periodically to allow the screen to update itself, e.g. to handle
* std::futures that are still loading in.
*/
virtual auto Tick() -> void {}
auto root() -> lv_obj_t* { return root_; }
auto group() -> lv_group_t* { return group_; }
protected:
lv_obj_t* const root_;
lv_group_t* const group_;
};
} // namespace ui