mousegesture.h

/*
 * Copyright (C) 2018 Microchip Technology Inc.  All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef EGT_DETAIL_MOUSEGESTURE_H
#define EGT_DETAIL_MOUSEGESTURE_H
 
#include <chrono>
#include <egt/detail/meta.h>
#include <egt/event.h>
#include <egt/geometry.h>
#include <egt/timer.h>
#include <string>
#include <vector>
 
namespace egt
{
inline namespace v1
{
namespace detail
{
 
class EGT_API MouseGesture
{
public:
 
    MouseGesture() noexcept;
 
    using MouseCallback = std::function<void(Event& event)>;
 
    void on_async_event(MouseCallback callback);
 
    Event handle(const Event& event);
 
    void start(const DisplayPoint& point);
 
    EGT_NODISCARD const DisplayPoint& mouse_start() const
    {
        return m_mouse_start_pos;
    }
 
    EGT_NODISCARD bool active() const { return m_active; }
 
    EGT_NODISCARD bool dragging() const { return m_dragging; }
 
    void stop();
 
    EGT_NODISCARD static DefaultDim drag_enable_distance()
    {
        return m_drag_enable_distance;
    }
 
    static void drag_enable_distance(DefaultDim distance)
    {
        m_drag_enable_distance = distance;
    }
 
protected:
 
    void invoke_handlers(Event& event);
 
    bool m_active{false};
 
    bool m_dragging{false};
 
    bool m_holding{false};
 
    DisplayPoint m_mouse_start_pos;
 
    using CallbackArray = std::vector<MouseCallback>;
 
    CallbackArray m_callbacks;
 
    PeriodicTimer m_long_click_timer;
 
    static DefaultDim m_drag_enable_distance;
};
 
}
 
}
}
 
#endif