/****************************************************************************
**
** Copyright (C) 1993-2009 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
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** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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****************************************************************************/

#include "EnginePrefix.h"
#include "Qt3DSTegraInputEngine.h"

//==============================================================================
//	Namespace
//==============================================================================
namespace Q3DStudio {

//==============================================================================
/**
 * XXX
 */
CTegraInputEngine::CTegraInputEngine()
{
}

//==============================================================================
/**
 * XXX
 */
CTegraInputEngine::~CTegraInputEngine()
{
}

//==============================================================================
/**
 * Returns the structure that contains the input information for the current frame.
 */
SInputFrame &CTegraInputEngine::GetInputFrame()
{
    return m_InputFrame;
}

//==============================================================================
/**
 * Handles the input message.
 */
void CTegraInputEngine::HandleMessage(const QEvent *inEvent,
                                      ITegraApplicationRenderEngine &inRenderEngine,
                                      CPresentation *inPresentation)
{
    static bool s_PointerWasDown = false;

    if (NULL == inPresentation)
        return;

    switch (inEvent->type()) {

    case QEvent::MouseButtonPress:
    case QEvent::MouseButtonRelease:
        {
            const QMouseEvent *event = static_cast<const QMouseEvent *>(inEvent);

            QPointF pos = event->localPos();
            FLOAT x = pos.x();
            FLOAT y = pos.y();

            const bool pressed = inEvent->type() == QEvent::MouseButtonPress;

            if (inRenderEngine.IsPickValid(x, y, *inPresentation)) {
                // printf( "INPUT x %ld y %ld\n", (int)x, (int)y );
                SetPickInput(x, y, (pressed || s_PointerWasDown) ? true : false);

                if (pressed) {
                    if (s_PointerWasDown)
                        SetPickFlags(LMOUSE_DOWN);
                    else
                        SetPickFlags(LMOUSE_PRESSED);

                    s_PointerWasDown = true;
                } else {
                    if (s_PointerWasDown)
                        SetPickFlags(LMOUSE_RELEASED);
                    else
                        SetPickFlags(LMOUSE_UP);

                    s_PointerWasDown = false;
                }
            } else {
                if (s_PointerWasDown)
                    SetPickFlags(LMOUSE_RELEASED);
                else
                    SetPickFlags(LMOUSE_UP);

                s_PointerWasDown = false;
            }
        }
        break;
    default:
        break;
    }
}

} // namespace Q3DStudio