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#include "qwmpvideooverlay.h"

#include "qwmpglobal.h"

QWmpVideoOverlay::QWmpVideoOverlay(IWMPPlayer4 *player, IOleObject *object, QWmpPlayerService *service)
    : m_service(service)
    , m_player(player)
    , m_object(object)
    , m_inPlaceObject(0)
    , m_aspectRatioMode(Qt::KeepAspectRatio)
    , m_enabled(false)
{
    HRESULT hr;

    if ((hr = m_object->QueryInterface(
            __uuidof(IOleInPlaceObject),
            reinterpret_cast<void **>(&m_inPlaceObject))) != S_OK) {
        qWarning("No IOleInPlaceObject interface, %x: %s", hr, qwmp_error_string(hr));
    }
}

QWmpVideoOverlay::~QWmpVideoOverlay()
{
    if (m_inPlaceObject)
        m_inPlaceObject->Release();
}

void QWmpVideoOverlay::setEnabled(bool enabled)
{
    m_enabled = enabled;

    if (m_inPlaceObject && winId()) {
        QRect rect = displayRect();

        RECT rcPos = { rect.left(), rect.top(), rect.right(), rect.bottom() };
        m_object->DoVerb(OLEIVERB_INPLACEACTIVATE, 0, m_service, 0, winId(), &rcPos);
    }
}

WId QWmpVideoOverlay::winId() const
{
    return m_winId;
}

void QWmpVideoOverlay::setWinId(WId id)
{
    if (m_inPlaceObject && m_enabled) {
        QRect rect = displayRect();

        RECT rcPos = { rect.left(), rect.top(), rect.right(), rect.bottom() };
        m_object->DoVerb(OLEIVERB_INPLACEACTIVATE, 0, m_service, 0, id, &rcPos);
    }

    if (!id)
        m_enabled = false;

    m_winId = id;
}

extern HDC Q_GUI_EXPORT qt_win_display_dc();

#define HIMETRIC_PER_INCH   2540
#define MAP_PIX_TO_LOGHIM(x,ppli)   ((HIMETRIC_PER_INCH*(x) + ((ppli)>>1)) / (ppli))
#define MAP_LOGHIM_TO_PIX(x,ppli)   (((ppli)*(x) + HIMETRIC_PER_INCH/2) / HIMETRIC_PER_INCH)

QRect QWmpVideoOverlay::displayRect() const
{
    return m_displayRect;
}

void QWmpVideoOverlay::setDisplayRect(const QRect &rect)
{
    if (m_inPlaceObject && m_enabled) {
        HDC gdc = QT_PREPEND_NAMESPACE(qt_win_display_dc)();

        SIZEL hmSize = {
                MAP_PIX_TO_LOGHIM(rect.width(), GetDeviceCaps(gdc, LOGPIXELSX)),
                MAP_PIX_TO_LOGHIM(rect.height(), GetDeviceCaps(gdc, LOGPIXELSY)) };

        m_object->SetExtent(DVASPECT_CONTENT, &hmSize);

        RECT rcClip = { rect.left(), rect.top(), rect.right(), rect.bottom() };

        if (m_aspectRatioMode == Qt::KeepAspectRatioByExpanding) {
            QSize size = m_sizeHint;
            size.scale(rect.width(), rect.height(), Qt::KeepAspectRatioByExpanding);

            QRect positionRect(QPoint(0, 0), size);
            positionRect.moveCenter(rect.center());

            RECT rcPos = 
            { 
                positionRect.left(),
                positionRect.top(),
                positionRect.right(),
                positionRect.bottom()
            };

            m_inPlaceObject->SetObjectRects(&rcPos, &rcClip);
        } else {
            m_inPlaceObject->SetObjectRects(&rcClip, &rcClip);
        }
    }

    m_displayRect = rect;
}

bool QWmpVideoOverlay::isFullScreen() const
{
    return m_fullScreen;
}

void QWmpVideoOverlay::setFullScreen(bool fullScreen)
{
    m_player->put_fullScreen(fullScreen);

    emit fullScreenChanged(m_fullScreen = fullScreen);
}

QSize QWmpVideoOverlay::nativeSize() const
{
    return m_sizeHint;
}

void QWmpVideoOverlay::setNativeSize(const QSize &size)
{    
    if (m_sizeHint != size) {
        m_sizeHint = size;

        emit nativeSizeChanged();
    }
}

Qt::AspectRatioMode QWmpVideoOverlay::aspectRatioMode() const
{
    return m_aspectRatioMode;
}

void QWmpVideoOverlay::setAspectRatioMode(Qt::AspectRatioMode mode)
{
    m_aspectRatioMode = mode;

    m_player->put_stretchToFit(mode != Qt::KeepAspectRatio);

    setDisplayRect(m_displayRect);
}

void QWmpVideoOverlay::repaint()
{
}

int QWmpVideoOverlay::brightness() const
{
    return 0;
}

void QWmpVideoOverlay::setBrightness(int)
{
}

int QWmpVideoOverlay::contrast() const
{
    return 0;
}

void QWmpVideoOverlay::setContrast(int)
{
}

int QWmpVideoOverlay::hue() const
{
    return 0;
}

void QWmpVideoOverlay::setHue(int)
{
}

int QWmpVideoOverlay::saturation() const
{
    return 0;
}

void QWmpVideoOverlay::setSaturation(int)
{
}

// IUnknown
HRESULT QWmpVideoOverlay::QueryInterface(REFIID riid, void **object)
{
    return m_service->QueryInterface(riid, object);
}

ULONG QWmpVideoOverlay::AddRef()
{
    return m_service->AddRef();
}

ULONG QWmpVideoOverlay::Release()
{
    return m_service->Release();
}

// IOleWindow
HRESULT QWmpVideoOverlay::GetWindow(HWND *phwnd)
{
    if (!phwnd) {
        return E_POINTER;
    } else if (!m_enabled) {
        *phwnd = 0;
        return E_UNEXPECTED;
    } else {
        *phwnd = winId();
        return S_OK;
    }
}

HRESULT QWmpVideoOverlay::ContextSensitiveHelp(BOOL fEnterMode)
{
    Q_UNUSED(fEnterMode);

    return E_NOTIMPL;
}

// IOleInPlaceSite
HRESULT QWmpVideoOverlay::CanInPlaceActivate()
{
    return S_OK;
}

HRESULT QWmpVideoOverlay::OnInPlaceActivate()
{
    return S_OK;
}

HRESULT QWmpVideoOverlay::OnUIActivate()
{
    return S_OK;
}

HRESULT QWmpVideoOverlay::GetWindowContext(
        IOleInPlaceFrame **ppFrame,
        IOleInPlaceUIWindow **ppDoc,
        LPRECT lprcPosRect,
        LPRECT lprcClipRect,
        LPOLEINPLACEFRAMEINFO lpFrameInfo)
{
    if (!ppFrame || !ppDoc || !lprcPosRect || !lprcClipRect || !lpFrameInfo)
        return E_POINTER;

    QueryInterface(IID_IOleInPlaceFrame, reinterpret_cast<void **>(ppFrame));
    QueryInterface(IID_IOleInPlaceUIWindow, reinterpret_cast<void **>(ppDoc));

    if (m_enabled) {
        SetRect(lprcClipRect,
                m_displayRect.left(),
                m_displayRect.top(),
                m_displayRect.right(),
                m_displayRect.bottom());

        if (m_aspectRatioMode == Qt::KeepAspectRatioByExpanding) {
            QSize size = m_sizeHint;
            size.scale(
                m_displayRect.width(),
                m_displayRect.height(),
                Qt::KeepAspectRatioByExpanding);

            QRect positionRect(QPoint(0, 0), size);
            positionRect.moveCenter(m_displayRect.center());

            SetRect(lprcPosRect,
                    positionRect.left(),
                    positionRect.top(),
                    positionRect.right(),
                    positionRect.bottom());
        } else {
            *lprcPosRect = *lprcClipRect;
        }
    } else {
        SetRectEmpty(lprcPosRect);
        SetRectEmpty(lprcClipRect);
    }

    lpFrameInfo->cb = sizeof(OLEINPLACEFRAMEINFO);
    lpFrameInfo->fMDIApp = false;
    lpFrameInfo->haccel = 0;
    lpFrameInfo->cAccelEntries = 0;
    lpFrameInfo->hwndFrame = m_enabled ? winId() : 0;

    return S_OK;
}

HRESULT QWmpVideoOverlay::Scroll(SIZE scrollExtant)
{
    Q_UNUSED(scrollExtant);

    return S_FALSE;
}

HRESULT QWmpVideoOverlay::OnUIDeactivate(BOOL fUndoable)
{
    Q_UNUSED(fUndoable);

    return S_OK;
}

HRESULT QWmpVideoOverlay::OnInPlaceDeactivate()
{
    return S_OK;
}

HRESULT QWmpVideoOverlay::DiscardUndoState()
{
    return S_OK;
}

HRESULT QWmpVideoOverlay::DeactivateAndUndo()
{
    if (m_inPlaceObject)
        m_inPlaceObject->UIDeactivate();

    return S_OK;
}

HRESULT QWmpVideoOverlay::OnPosRectChange(LPCRECT lprcPosRect)
{
    Q_UNUSED(lprcPosRect);

    return S_OK;
}

// IOleInPlaceUIWindow
HRESULT QWmpVideoOverlay::GetBorder(LPRECT lprectBorder)
{
    Q_UNUSED(lprectBorder);

    return INPLACE_E_NOTOOLSPACE;
}

HRESULT QWmpVideoOverlay::RequestBorderSpace(LPCBORDERWIDTHS pborderwidths)
{
    Q_UNUSED(pborderwidths);

    return INPLACE_E_NOTOOLSPACE;
}

HRESULT QWmpVideoOverlay::SetBorderSpace(LPCBORDERWIDTHS pborderwidths)
{
    Q_UNUSED(pborderwidths);

    return OLE_E_INVALIDRECT;
}

HRESULT QWmpVideoOverlay::SetActiveObject(
        IOleInPlaceActiveObject *pActiveObject, LPCOLESTR pszObjName)
{
    Q_UNUSED(pActiveObject);
    Q_UNUSED(pszObjName);

    return  S_OK;
}

// IOleInPlaceFrame
HRESULT QWmpVideoOverlay::InsertMenus(HMENU hmenuShared, LPOLEMENUGROUPWIDTHS lpMenuWidths)
{
    Q_UNUSED(hmenuShared);
    Q_UNUSED(lpMenuWidths);

    return E_NOTIMPL;
}

HRESULT QWmpVideoOverlay::SetMenu(HMENU hmenuShared, HOLEMENU holemenu, HWND hwndActiveObject)
{
    Q_UNUSED(hmenuShared);
    Q_UNUSED(holemenu);
    Q_UNUSED(hwndActiveObject);

    return E_NOTIMPL;
}

HRESULT QWmpVideoOverlay::RemoveMenus(HMENU hmenuShared)
{
    Q_UNUSED(hmenuShared);

    return E_NOTIMPL;
}

HRESULT QWmpVideoOverlay::SetStatusText(LPCOLESTR pszStatusText)
{
    Q_UNUSED(pszStatusText);

    return E_NOTIMPL;
}

HRESULT QWmpVideoOverlay::EnableModeless(BOOL fEnable)
{
    Q_UNUSED(fEnable);

    return E_NOTIMPL;
}

HRESULT QWmpVideoOverlay::TranslateAccelerator(LPMSG lpmsg, WORD wID)
{
    return TranslateAccelerator(lpmsg, static_cast<DWORD>(wID));
}