author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 18 Aug 2010 11:34:25 +0300 | |
changeset 51 | a7c938434754 |
parent 44 | 601ab138ba0b |
child 55 | 336bee5c2d35 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1995-2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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#include "T_IsolatedFontStore.h" |
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#include <graphics/openfontrasterizer.h> |
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#include <graphics/openfontconstants.h> |
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CTIsolatedFontStore::CTIsolatedFontStore():iIsHeapOwner(ETrue) |
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{ |
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} |
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CTIsolatedFontStore::CTIsolatedFontStore(RHeap* aHeap):iIsHeapOwner(EFalse),iHeap(aHeap) |
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{ |
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} |
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CTIsolatedFontStore::~CTIsolatedFontStore() |
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{ |
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delete iFs; |
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if (iIsHeapOwner && iHeap) |
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{ |
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iHeap->Close(); |
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} |
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REComSession::FinalClose(); |
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} |
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CTIsolatedFontStore* CTIsolatedFontStore::NewLC() |
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{ |
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CTIsolatedFontStore* self = new (ELeave)CTIsolatedFontStore(); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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return self; |
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} |
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CTIsolatedFontStore* CTIsolatedFontStore::NewL() |
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{ |
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CTIsolatedFontStore* self=CTIsolatedFontStore::NewLC(); |
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CleanupStack::Pop(); // self; |
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return self; |
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} |
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CTIsolatedFontStore* CTIsolatedFontStore::NewLC(RHeap * aHeap) |
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{ |
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CTIsolatedFontStore* self = new (ELeave)CTIsolatedFontStore(aHeap); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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return self; |
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} |
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CTIsolatedFontStore* CTIsolatedFontStore::NewL(RHeap * aHeap) |
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{ |
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CTIsolatedFontStore* self=CTIsolatedFontStore::NewLC(aHeap); |
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CleanupStack::Pop(); // self; |
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return self; |
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} |
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void CTIsolatedFontStore::ConstructL() |
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{ |
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if(iIsHeapOwner) |
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{ |
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iHeap = UserHeap::ChunkHeap(NULL,0x10000,0x10000); |
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} |
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iFs = CFontStore::NewL(iHeap); |
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} |
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/** |
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Load all available font rasterizers and install to the instance of CFontStore |
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this class contains. |
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@pre This function hasn't previously been called on this object |
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@post All rasterizers located and successfully loaded will be available for use |
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*/ |
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void CTIsolatedFontStore::LoadRasterizersL() |
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{ |
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RImplInfoPtrArray implementationArray; |
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TUid uid = {KUidOpenFontRasterizerPlunginInterface}; |
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// get implementation list |
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ListImplementationsWithRetry(uid, implementationArray, EFalse); |
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const TInt availCount = implementationArray.Count(); |
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for (TInt count=0; count < availCount; ++count) |
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{ |
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const CImplementationInformation* info = implementationArray[count]; |
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// Create & install a rasterizer |
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// ignore Leaves, as any necessary cleanup will have already been done through the cleanup stack |
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TRAP_IGNORE(SafeInstallOfRasterizerL(info->ImplementationUid())); |
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} |
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// free memory |
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implementationArray.ResetAndDestroy(); |
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} |
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/** |
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Helper function from CFbTop to List all available rasterizers. |
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@param aInterfaceUid The UID of the ECOM plugin |
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@param aImplementationArray An array to store the found plugins |
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@param aRomOnly If ETrue only ROM plugins are returned, otherwise all drives are searched |
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*/ |
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void CTIsolatedFontStore::ListImplementationsWithRetry(TUid& aInterfaceUid, RImplInfoPtrArray &aImplementationArray, TBool aRomOnly) |
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{ |
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// Making sure that no race situation arises between FBserv and Ecom |
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// If ECom is not ready, give it another chance and try again. if it still doesn't work |
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// after the third try, then it just carries on quietly and fails... |
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for (TInt ecomnotready =0; ecomnotready <3; ecomnotready++) |
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120 |
{ |
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TInt ecomError = KErrNone; |
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if (aRomOnly) |
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{ |
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TEComResolverParams resParams; |
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TRAP(ecomError, REComSession::ListImplementationsL(aInterfaceUid, resParams, KRomOnlyResolverUid, aImplementationArray)); |
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} |
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else |
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{ // default resolver |
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TRAP(ecomError, REComSession::ListImplementationsL(aInterfaceUid, aImplementationArray)); |
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} |
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|
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if (!ecomError) |
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{ |
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return; |
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} |
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else |
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{ |
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User::After(0); |
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} |
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} |
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} |
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|
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/** |
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Installs the rasterizer with the specified interface UID. |
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@param aInterfaceImplUid The UID of the rasterizer to be installed. |
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|
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@see CFbTop::SafeInstallOfRasterizerL |
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*/ |
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void CTIsolatedFontStore::SafeInstallOfRasterizerL(TUid aInterfaceImplUid) |
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{ |
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COpenFontRasterizer* rasterizer = COpenFontRasterizer::NewL(aInterfaceImplUid); |
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CleanupStack::PushL(rasterizer); |
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// Install it in the font store. |
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iFs->InstallRasterizerL(rasterizer); |
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CleanupStack::Pop(rasterizer); |
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} |