mgl_touch.h

[詳解]

// SPDX-License-Identifier: Zlib
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
 
#ifndef INCGUARD_MGL_TOUCH_H_1613419314
#define INCGUARD_MGL_TOUCH_H_1613419314
 
#include <mgl/input/touch/mgl_touch_server.h>
#include <mgl/input/touch/mgl_touch_settings.h>
#include <mgl/mgl_environment.h>
 
namespace MGL::Input
{
class Touch
{
public:
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    Touch(size_t index = 0) noexcept
        : _state(TouchServer::GetInstance().GetState(index))
    {
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    Touch(TouchID touchID) noexcept
        : _state(TouchServer::GetInstance().GetState(touchID))
    {
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    Touch(const Rectangle &rectangle) noexcept
        : _state(TouchServer::GetInstance().GetState(rectangle))
    {
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    static bool IsAvailable() noexcept
    {
        return TouchServer::GetInstance().IsAvailable();
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr bool IsEnabled() const noexcept
    {
        return _state.isEnabled;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr TouchID GetTouchID() const noexcept
    {
        return _state.touchID;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr uint32_t GetTouchFrameCount() const noexcept
    {
        return _state.touchFrameCount;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr bool IsTouchedFirst() const noexcept
    {
        return _state.isEnabled && (_state.touchFrameCount == 1);
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr const Vector2 &GetPosition() const noexcept
    {
        return _state.position;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr const Vector2 &GetPrevPosition() const noexcept
    {
        return _state.prevPosition;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr const Vector2 &GetDeltaMove() const noexcept
    {
        return _state.deltaMove;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr const Vector2 &GetUVPosition() const noexcept
    {
        return _state.uvPosition;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr const Vector2 &GetUVPrevPosition() const noexcept
    {
        return _state.uvPrevPosition;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr const Vector2 &GetUVDeltaMove() const noexcept
    {
        return _state.uvDeltaMove;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    explicit constexpr operator bool() const noexcept
    {
        return IsEnabled();
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr bool operator!() const noexcept
    {
        return !static_cast<bool>(*this);
    }
 
private:
    const TouchState &_state;
};
}    // namespace MGL::Input
 
#endif    // INCGUARD_MGL_TOUCH_H_1613419314
 
// vim: et ts=4 sw=4 sts=4