// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
//
#include <e32base.h>
#include <e32std.h>
#include "inifile.h"
#include "wstop.h"
#include "renderstagemanager.h"
#include "wspluginmanager.h"
#include "Graphics/WsRenderStageFactory.h"
// Constants
_LIT(KWhiteSpace, " ");
_LIT(KDefaultRenderStages, "flickerbuffer display");
_LIT(KRenderStages, "RENDERSTAGES");
// Globals
GLREF_D CDebugLogBase *wsDebugLog;
/**
@internalComponent
@prototype
*/
LOCAL_C HBufC* ReverseListLC(const TDesC* aRenderStageList)
{
HBufC* writeableCopy = HBufC::NewLC(aRenderStageList->Length());
TPtr reversedList(writeableCopy->Des());
TLex lex(*aRenderStageList);
TBool firstTime = true;
while (true)
{
TPtrC currentPluginString = lex.NextToken();
if (!currentPluginString.Length())
{
break;
}
if (firstTime)
{
reversedList.Insert(0, currentPluginString);
firstTime = false;
}
else
{
reversedList.Insert(0, KWhiteSpace());
reversedList.Insert(0, currentPluginString);
}
}
return writeableCopy;
}
/**
@internalComponent
@prototype
*/
LOCAL_C CWsRenderStage *ConstructRenderStageChain(HBufC* reversedRenderStageList, TInt aScreenNumber, MWsScreen *aScreen, MWsScreenRedraw *aScreenRedraw)
{
TInt err = KErrNone;
CWsPluginManager * pluginMgr = CWsTop::PluginManager();
if (!pluginMgr)
{
#if _DEBUG
RDebug::Printf("ConstructRenderStageChain: Failed to obtain Plugin Manager at File: %s, Line: %d\n", __FILE__, __LINE__);
#endif
return NULL;
}
CWsRenderStage* stage;
CWsRenderStage* savedStage = NULL;
TBool isLastRenderStage = ETrue;
TLex lex(*reversedRenderStageList);
while (true)
{
TPtrC ptr = lex.NextToken();
if (ptr.Length() > 0)
{
MWsRenderStageFactory * factory = pluginMgr->FindNamedImplementation<MWsRenderStageFactory>(ptr);
if (factory)
{
if (isLastRenderStage)
{
isLastRenderStage = EFalse;
stage = NULL;
TRAP(err, stage = factory->CreateFinalRenderStageL(aScreen, aScreenRedraw, aScreenNumber));
if (err)
{
#if _DEBUG
RDebug::Printf("ConstructRenderStageChain: Create final renderstage error at File: %s, Line: %d Error Code: %d\n", __FILE__, __LINE__, err);
#endif
}
}
else
{
stage = NULL;
TRAP(err, stage = factory->CreateRenderStageL(aScreen, aScreenRedraw, savedStage));
if (err)
{
#if _DEBUG
RDebug::Printf("ConstructRenderStageChain: Create renderstage error at File: %s, Line: %d Error Code: %d\n", __FILE__, __LINE__, err);
#endif
}
}
if (!stage)
{
err = KErrNotFound;
}
else
{
savedStage = stage;
}
}
else
{
err = KErrNotFound;
TBuf<256> buf;
_LIT(KTxt1, "ConstructRenderStageChain: Factory ");
buf.Append(KTxt1);
buf.Append(ptr);
_LIT(KTxt2, " not found at File: ");
buf.Append(KTxt2);
#define FILENAME(f) _LIT(KFileName, f);
FILENAME(__FILE__);
buf.Append(KFileName);
TBuf<32> buf1;
_LIT(KTxt3," Line: %d Error Code: %d, \n");
buf1.Format(KTxt3, __LINE__, err);
buf.Append(buf1);
RDebug::RawPrint(buf);
}
if (err)
{
if (wsDebugLog)
{
TBuf<64> buf;
_LIT(KMissingRenderStage,"Failed to add render stage (%d): ");
buf.Append(KMissingRenderStage);
buf.Append(ptr);
wsDebugLog->MiscMessage(CDebugLogBase::ELogImportant,buf,err);
}
// This method must fail if *ANY* of the render stages fails during construction
break;
}
else if (wsDebugLog)
{
TBuf<64> buf;
_LIT(KAddedRenderStage,"Added render stage: ");
buf.Append(KAddedRenderStage);
buf.Append(ptr);
wsDebugLog->MiscMessage(CDebugLogBase::ELogImportant,buf);
}
}
else
{
break;
}
}
if (err)
{
delete savedStage;
savedStage = NULL;
}
return savedStage;
}
CWsRenderStage *CRenderStageManager::ConnectL(TInt aScreenNumber, MWsScreen *aScreen, MWsScreenRedraw *aScreenRedraw)
{
TPtrC stagesString;
const TDesC *renderStageList;
const TBool customStages = WsIniFile->FindVar(aScreenNumber, KRenderStages, stagesString);
if (customStages)
{
renderStageList = &stagesString;
}
else
{
renderStageList = &KDefaultRenderStages();
}
LEAVE_LOG_INSTALL_C;
HBufC* reversedRenderStageList = ReverseListLC(renderStageList);
CWsRenderStage *firstRenderStage;
firstRenderStage = ConstructRenderStageChain(reversedRenderStageList, aScreenNumber, aScreen, aScreenRedraw);
CleanupStack::PopAndDestroy(reversedRenderStageList);
LEAVE_LOG_UNINSTALL_C;
return firstRenderStage;
}
void CRenderStageManager::Release(CWsRenderStage *aRenderStage)
{
delete aRenderStage; // this deletes the render stage and its children
}