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App.h
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App.h
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///
/// @file App.h
///
/// @brief The header for the App class.
///
/// @author
///
/// This file is a part of Ultralight, a fast, lightweight, HTML UI engine
///
/// Website: <http://ultralig.ht>
///
/// Copyright (C) 2019 Ultralight, Inc. All rights reserved.
///
#pragma once
#include "Defines.h"
#include <Ultralight/RefPtr.h>
#include <Ultralight/Renderer.h>
namespace ultralight {
class Monitor;
class Window;
///
/// Interface for all App-related events. @see App::set_listener
///
class AExport AppListener {
public:
virtual ~AppListener() {}
///
/// Called whenever the App updates. You should update all app logic here.
///
/// @note This event is fired right before the run loop calls
/// Renderer::Update and Renderer::Render.
///
virtual void OnUpdate() {}
};
///
/// Main application class.
///
class AExport App : public RefCounted {
public:
///
/// Create the App singleton.
///
/// @note You should only create one of these per application lifetime.
///
/// App maintains its own Renderer instance, make sure to set your
/// Config before creating App. (@see Platform::set_config)
///
static Ref<App> Create();
///
/// Get the App singleton.
///
static App* instance();
///
/// Set the main window. You must set this before calling Run.
///
/// @param window The window to use for all rendering.
///
/// @note We currently only support one Window per App, this will change
/// later once we add support for multiple driver instances.
///
virtual void set_window(Ref<Window> window) = 0;
///
/// Get the main window.
///
virtual RefPtr<Window> window() = 0;
///
/// Set an AppListener to receive callbacks for app-related events.
///
/// @note Ownership remains with the caller.
///
virtual void set_listener(AppListener* listener) = 0;
///
/// Get the AppListener, if any.
///
virtual AppListener* listener() = 0;
///
/// Whether or not the App is running.
///
virtual bool is_running() const = 0;
///
/// Get the main monitor (this is never NULL).
///
/// @note We'll add monitor enumeration later.
///
virtual Monitor* main_monitor() = 0;
///
/// Get the underlying Renderer instance.
///
virtual Ref<Renderer> renderer() = 0;
///
/// Run the main loop.
///
/// @note Make sure to call set_window before calling this.
///
virtual void Run() = 0;
///
/// Quit the application.
///
virtual void Quit() = 0;
protected:
virtual ~App();
};
} // namespace ultralight