minisite.cpp

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

 *    IHXSite2::RemovePassiveSiteWatcher
 */
STDMETHODIMP CMiniBaseSite::RemovePassiveSiteWatcher(IHXPassiveSiteWatcher* pWatcher)
{
    // iterate child site list 
    IHXPassiveSiteWatcher* pThisWatcher = NULL;
    LISTPOSITION pPos = m_PassiveSiteWatchers.Find(pWatcher);
    HX_RESULT retVal = HXR_FAIL;

    if (pPos)
    {
        m_PassiveSiteWatchers.RemoveAt(pPos);
        HX_RELEASE(pWatcher);
        retVal = HXR_OK;
    }

    return retVal;
}

/************************************************************************
 *  Method:
 *    IHXSite2::SetCursor
 */
STDMETHODIMP CMiniBaseSite::SetCursor(HXxCursor cursor, REF(HXxCursor) oldCursor)
{
    return HXR_NOTIMPL;
}


STDMETHODIMP CMiniBaseSite::SetZOrder(INT32 lZOrder)
{
    if(!m_pParentSite) 
    {
        return HXR_UNEXPECTED;
    }

    if (lZOrder == -1)
    {
        lZOrder = m_pParentSite->GetNumberOfChildSites() - 1; 
    }
    
    if (lZOrder >= (INT32) m_pParentSite->GetNumberOfChildSites())
    {
        lZOrder = m_pParentSite->GetNumberOfChildSites() - 1;
    }

    if (m_lZOrder != lZOrder)
    {
        m_pParentSite->UpdateZOrder(this, lZOrder);
    }

    if( this == m_pTopLevelSite)
    {
        RecomputeClip();
    }
    else
    {
        if (m_pTopLevelSite)
            m_pTopLevelSite->ScheduleCallback(CLIP, 0);
    }
    return HXR_OK;
}

void CMiniBaseSite::UpdateZOrder( CMiniBaseSite* pUpdatedChildSite,INT32 lNewZOrder)
{
    HX_ASSERT(pUpdatedChildSite);
    LISTPOSITION pos = m_ChildrenInZOrder.Find((void*)pUpdatedChildSite);
    if (!pos)
    {
        return;
    }
    
    m_ChildrenInZOrder.RemoveAt(pos);
    
    BOOL bHasReinsertedChild = FALSE;
    INT32 zOrder = 0;
    INT32 newZOrder = 0;
    LISTPOSITION posNext = m_ChildrenInZOrder.GetHeadPosition();
    while (posNext)
    {
        pos = posNext;
        CMiniBaseSite* pSite = (CMiniBaseSite*)m_ChildrenInZOrder.GetNext(posNext);
        if (!bHasReinsertedChild)
        {
            pSite->GetZOrder(zOrder);
            
            if (zOrder > lNewZOrder)
            {
                m_ChildrenInZOrder.InsertBefore(pos, (void*)pUpdatedChildSite);
                bHasReinsertedChild = TRUE;
                pUpdatedChildSite->SetInternalZOrder(newZOrder++);
            }
        }
        pSite->SetInternalZOrder(newZOrder++);
    }
    
    if (!bHasReinsertedChild)
    {
        m_ChildrenInZOrder.AddTail((void*)pUpdatedChildSite);
        pUpdatedChildSite->SetInternalZOrder(newZOrder++);
    }
}
void CMiniBaseSite::RecomputeClip()
{
    // this recomputes our clipping rect.
    if( ComputeSubRects() )
    {
        //We need to do this in Z-Order.
        LISTPOSITION pos = m_ChildrenInZOrder.GetHeadPosition();
        while(pos)
        {
            CMiniBaseSite* pSite = (CMiniBaseSite*)m_ChildrenInZOrder.GetNext(pos);
            pSite->RecomputeClip();
        }
    }
}

BOOL CMiniBaseSite::IsSiteVisible()
{
    BOOL bIsVisible = m_bIsVisible;
    if(m_pParentSite)
    {
        bIsVisible &= m_pParentSite->IsSiteVisible();
    }
    if( bIsVisible )
    {
        //If we are a m_bSiteNeverBlts then it doesn't matter if we are
        //visible or not, we must have at least one child that is
        //visible and not m_bSiteNeverBlts. Otherwise we really aren't
        //visible at all. This distinction is needed because of our
        //favorite logic in computesubrecs not that we have transparent
        //regions.
        if(!_CheckForVisibleChild())
        {
            bIsVisible = FALSE;
        }
    }

    return bIsVisible;
}

BOOL CMiniBaseSite::_CheckForVisibleChild()
{
    BOOL       retVal = FALSE;
    BOOL       bSiteNeverBlts = FALSE;
    IHXBuffer* pBuf=NULL;

    m_pValues->GetPropertyCString( "SiteNeverBlts", pBuf );
    if( pBuf )
    {
        bSiteNeverBlts = atoi( (const char*)pBuf->GetBuffer() )==1;
        HX_RELEASE(pBuf);
    }
    
    if( m_bIsVisible && !bSiteNeverBlts )
    {
        retVal = TRUE;
    }
    else
    {
        LISTPOSITION pos = m_ChildrenInZOrder.GetHeadPosition();
        while(pos)
        {
            CMiniBaseSite* pSite = (CMiniBaseSite*)m_ChildrenInZOrder.GetNext(pos);
            if( pSite->_CheckForVisibleChild() )
            {
                retVal = TRUE;
                break;
            }
        }
    }
    return retVal;
}

BOOL CMiniBaseSite::ComputeSubRects()
{

    BOOL         retVal          = TRUE;        
    HXREGION*    hTemp           = NULL;
    HXxSize      size;
    HXxPoint*    pPosition       = NULL;
    LISTPOSITION pos             = NULL;

    if (m_Region)
    {
        HXDestroyRegion(m_Region);
        m_Region = NULL;
    }

    if (m_RegionWithoutChildren)
    {
        HXDestroyRegion(m_RegionWithoutChildren);
        m_RegionWithoutChildren = NULL;
    }

    if( IsSiteVisible() )
    {
        m_RegionWithoutChildren = HXCreateRectRegion(m_topleft.x,
                                                     m_topleft.y,
                                                     m_size.cx, 
                                                     m_size.cy
                                                     );


        if (m_pParentSite)
            m_pParentSite->BuildParnetClipping(m_RegionWithoutChildren,this);

        // subtract all of my children from my clipping region
        m_Region = HXCreateRectRegion(0,0,0,0);

        HXUnionRegion(m_Region, m_RegionWithoutChildren, m_Region);
        if (m_Region->numRects == 0)
        {
            retVal = FALSE;
        }
        else
        {
            pos = m_ChildrenInZOrder.GetHeadPosition();
            while(pos)
            {
                CMiniBaseSite* pSite = (CMiniBaseSite*) m_ChildrenInZOrder.GetNext(pos);
                if(pSite->IsSiteVisible())
                {    
                    pPosition = pSite->GetOrigin();
                    pSite->GetSize(size);
                    hTemp = HXCreateRectRegion( pPosition->x,
                                                pPosition->y,
                                                size.cx, 
                                                size.cy);
                    
                    HXSubtractRegion(m_Region, hTemp, m_Region);
                    HXDestroyRegion(hTemp);
                    hTemp = NULL;
                }
            }
        }
    }
    else
    {
        m_RegionWithoutChildren = HXCreateRectRegion(0,0,0,0);
        m_Region                = HXCreateRectRegion(0,0,0,0);
    }

    return TRUE;
}

void CMiniBaseSite::BuildParnetClipping(HXREGION* hClip, CMiniBaseSite* pChild)
{
    HXREGION* hTemp     = NULL;
    HXxPoint* pPosition = NULL;
    HXxSize   size;
    BOOL      bFound    = FALSE;

    // subtract all of my children from my clipping region
    LISTPOSITION pos = m_ChildrenInZOrder.GetHeadPosition();
    while(pos)
    {
        CMiniBaseSite* pSite = (CMiniBaseSite*)m_ChildrenInZOrder.GetNext(pos);
        //Keep in mind that all sites before pChild have zorder less than
        //pChild and all sites after have a higher zorder.
        if( pChild == pSite )
        {
            bFound = TRUE;
        }
        if(bFound && pChild!=pSite && pSite->IsSiteVisible())
        {
            pSite->GetSize(size);
            pPosition = pSite->GetOrigin();
            hTemp = HXCreateRectRegion( pPosition->x,
                                        pPosition->y,
                                        size.cx, 
                                        size.cy);

            HXSubtractRegion(hClip, hTemp, hClip);
            HXDestroyRegion(hTemp);
            hTemp=NULL;
        }
    }

    // now handle my clipping region
    hTemp = HXCreateRectRegion(m_topleft.x,
                               m_topleft.y,
                               m_size.cx, 
                               m_size.cy);
    
    HXIntersectRegion(hClip, hTemp, hClip);
    HXDestroyRegion(hTemp);
    hTemp=NULL;
    
    if (m_pParentSite)
        m_pParentSite->BuildParnetClipping(hClip,this);
}

void CMiniBaseSite::ScheduleCallback(CALLBACK_TYPE nWhichCallback,
                                   INT32 nMilliseconds)
{
    HX_ASSERT(m_pTopLevelSite == this);


    if( !(m_bfCallBacks & nWhichCallback))
    {
        //It is not already set.
        m_bfCallBacks |= nWhichCallback;
        
        if (m_pScheduler)
        {
            ULONG32 now = HX_GET_TICKCOUNT();
            if(m_CallbackHandle && m_ulCallbackTime>(now+nMilliseconds) )
            {
                m_pScheduler->Remove(m_CallbackHandle);
                m_CallbackHandle = 0;
            }

            if( !m_CallbackHandle )
            {
                //Don't schedule a new one if we are already waiting.
                m_CallbackHandle = m_pScheduler->RelativeEnter( this,
                                                                nMilliseconds);
                m_ulCallbackTime = now+nMilliseconds;
            }
        }
    }
}

STDMETHODIMP CMiniBaseSite::Func(void)
{
    m_CallbackHandle = 0;

    AddRef();

    if( m_bfCallBacks & CLIP )
    {
        RecomputeClip();
        _ForceRedrawAll();
        m_bfCallBacks &= ~CLIP;
        m_bfCallBacks &= ~REDRAW_ALL;
    }

    if (m_bfCallBacks & REPAINT)
    {
        _ForceRedrawAll();
        m_bfCallBacks &= ~REPAINT;
    }

    if( m_bfCallBacks & REDRAW_ALL )
    {
        _ForceRedrawAll();
        m_bfCallBacks &= ~REDRAW_ALL;
    }

    Release();

    return HXR_OK;
}

void CMiniBaseSite::_ForceRedrawAll()
{
    if( (IsSiteVisible() && m_Region && !HXEmptyRegion(m_Region)))
    {
        ForceRedraw();
    }
   
    //Now do all the children in z-order
    LISTPOSITION pos = m_ChildrenInZOrder.GetHeadPosition();
    while(pos)
    {
        CMiniBaseSite* pSite = (CMiniBaseSite*)m_ChildrenInZOrder.GetNext(pos);
        pSite->_ForceRedrawAll();
    }
}

void CMiniBaseSite::ResetOrigin()
{
    m_topleft.x =0;
    m_topleft.y =0;
    GetAbsoluteCords(m_topleft);
   
    LISTPOSITION pos = m_ChildrenInZOrder.GetHeadPosition();
    while(pos)
    {
        CMiniBaseSite* pChildSite = (CMiniBaseSite*)m_ChildrenInZOrder.GetNext(pos);
        pChildSite->ResetOrigin();
    }
}

void CMiniBaseSite::GetAbsoluteCords(HXxPoint& point)
{
    point.x += m_position.x;
    point.y += m_position.y;

    if (m_pParentSite)
    {
        m_pParentSite->GetAbsoluteCords(point);
    }
}

#endif //HELIX_FEATURE_SMIL_SITE