minisymbiansite.cpp

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

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
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 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
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 * This file is part of the Helix DNA Technology. RealNetworks is the 
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#include "minisite.h"
#include "minisymbiansite.h"
#include "minisymbiansurf.h"
#include <e32std.h> 
#include <eikenv.h> 
#include <eikdef.h> 
#include <gdi.h> 
#include <fbs.h> 
#include "hxprefs.h"
#include "hxprefutil.h"

//Well, I hate to add this, but we really have to keep track of how
//many sites have been made so we can center and scale video only
//playback. Not the cleanest thing in the world.
const INT32 _zm_nSiteCount = 0;
#define zm_nSiteCount HXGlobalInt32::Get(&_zm_nSiteCount)

CHXSymbianSite::CHXSymbianSite( IUnknown* pContext,
                                IUnknown* pUnkOuter,
                                INT32     lZorder)
    :  CMiniBaseSite(pContext, pUnkOuter, lZorder),
       m_bAutoScale(TRUE)
{
    memset(&m_OrigSize, 0, sizeof(m_OrigSize));
    zm_nSiteCount++;
}

CHXSymbianSite::~CHXSymbianSite()
{
    zm_nSiteCount--;
}

void* CHXSymbianSite::_Create(void* pParentWindow, UINT32 style)
{
    //XXXGfw Don't use.
    HX_ASSERT("Not supported on Symbian"==NULL);
    
    return (void*)NULL;
}

void CHXSymbianSite::_Destroy(HXxWindow* pWindow)
{
}

void CHXSymbianSite::_ChildCreated()
{
    //If we have a child created, stop doing any of the
    //centering or scaling.
    if( m_pWindow && m_pWindow->window && m_bAutoScale )
    {
        SetSize(m_OrigSize);
    }
}

void CHXSymbianSite::_SetSize(HXxSize size)
{
}

void  CHXSymbianSite::_SetPosition(HXxPoint position)
{
}


void CHXSymbianSite::_AttachWindow()
{
}

BOOL CHXSymbianSite::_MoveWindow( void* window ,
                                   INT32 X, INT32 Y,
                                   INT32 nWidth, INT32 nHeight,
                                   BOOL bRepaint)
    
{
    return TRUE;
}

STDMETHODIMP CHXSymbianSite::SetSize(HXxSize size)
{
    //First, call the basesite's impl.
    HX_RESULT ret = CMiniBaseSite::SetSize(size);

    //Now do our scaling..

    //There is often a border around our display window and the edge
    //of the physical phone display. So, if you play back a 176x144
    //video on a 176x144 screen it won't quite fit. Instead of
    //shrinking this to 1/2, go ahead and just lose some pixels
    //around the edges and display it at 1:1.
    UINT32          nPixelWaste  = 2;

    IHXPreferences* pPreferences = NULL;
    if (HXR_OK == m_pContext->QueryInterface(IID_IHXPreferences, (void**)&pPreferences))
    {
        ReadPrefINT32(pPreferences, "PixelWaste", nPixelWaste );
        ReadPrefBOOL(pPreferences, "AutoScale", m_bAutoScale);
        HX_RELEASE(pPreferences);
    }

    
    //Only do the centering and scaling for the top level site.  If
    //CreateChild is ever called on this top level site, then we will
    //revert this site back to 0,0 and the size of the window. Until
    //then, we assume this is an single video playback only and center
    //scale it.
    if( m_pWindow && m_pWindow->window && 1==zm_nSiteCount )
    {
        //Get the size of the screen device.
        RDrawableWindow* pWin = (RDrawableWindow*)m_pWindow->window;
        TSize windowSize = pWin->Size();

        int nWidth  = windowSize.iWidth;
        int nHeight = windowSize.iHeight;
        int nRatio  = 1;
        if( m_bAutoScale )
        {
            m_OrigSize = m_size;
            
            //Now figure out what scale factor to play back at: .5, 1, 2.
            nRatio = min( (nWidth+nPixelWaste)/size.cx,
                          (nHeight+nPixelWaste)/size.cy
                          );
            if( 2 < nRatio )
                nRatio = 2;

            switch( nRatio )
            {
               case 0:
                   //Go to 1/2, its the best we can do.
                   //XXXGfw TODO: if its too big lets not even play this clip.
                   m_size.cx = size.cx/2;
                   m_size.cy = size.cy/2;
                   break;
               case 1:
                   //Just leave it alone.
                   break;
               case 2:
                   //Go to double size.
                   m_size.cx = size.cx*2;
                   m_size.cy = size.cy*2;
                   break;
               default:
                   break;
            }
        }
        
#ifndef HELIX_FEATURE_SMIL_SITE
        //There are no site-watchers in non-smil site cases. So,
        //the TLC has no chance to center the site. We will do
        //it here.
        HXxPoint point;
        point.x = (nWidth-m_size.cx)/2;
        point.y = (nHeight-m_size.cy)/2;
        SetPosition( point );
#else        
        //If we changed size, due to autoscaling, call the site
        //watchers and let them know. On symbian this lets the TLC
        //do auto centering.
        if( 1 != nRatio )
        {
            CHXSimpleList::Iterator i;
            for(i=m_PassiveSiteWatchers.Begin(); i!= m_PassiveSiteWatchers.End(); ++i)
            {
                ((IHXPassiveSiteWatcher*) *i)->SizeChanged(&m_size);
            }
        }
#endif 
    }
    return ret;
}