1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/textandloc/fontservices/fontstore/tfs/T_IsolatedFontStore.cpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,157 @@
1.4 +/*
1.5 +* Copyright (c) 1995-2010 Nokia Corporation and/or its subsidiary(-ies).
1.6 +* All rights reserved.
1.7 +* This component and the accompanying materials are made available
1.8 +* under the terms of "Eclipse Public License v1.0"
1.9 +* which accompanies this distribution, and is available
1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.11 +*
1.12 +* Initial Contributors:
1.13 +* Nokia Corporation - initial contribution.
1.14 +*
1.15 +* Contributors:
1.16 +*
1.17 +* Description:
1.18 +*
1.19 +*/
1.20 +
1.21 +#include "T_IsolatedFontStore.h"
1.22 +#include <graphics/openfontrasterizer.h>
1.23 +#include <graphics/openfontconstants.h>
1.24 +
1.25 +CTIsolatedFontStore::CTIsolatedFontStore():iIsHeapOwner(ETrue)
1.26 + {
1.27 + }
1.28 +
1.29 +CTIsolatedFontStore::CTIsolatedFontStore(RHeap* aHeap):iIsHeapOwner(EFalse),iHeap(aHeap)
1.30 + {
1.31 + }
1.32 +
1.33 +CTIsolatedFontStore::~CTIsolatedFontStore()
1.34 + {
1.35 + delete iFs;
1.36 + if (iIsHeapOwner && iHeap)
1.37 + {
1.38 + iHeap->Close();
1.39 + }
1.40 + REComSession::FinalClose();
1.41 + }
1.42 +
1.43 +CTIsolatedFontStore* CTIsolatedFontStore::NewLC()
1.44 + {
1.45 + CTIsolatedFontStore* self = new (ELeave)CTIsolatedFontStore();
1.46 + CleanupStack::PushL(self);
1.47 + self->ConstructL();
1.48 + return self;
1.49 + }
1.50 +
1.51 +CTIsolatedFontStore* CTIsolatedFontStore::NewL()
1.52 + {
1.53 + CTIsolatedFontStore* self=CTIsolatedFontStore::NewLC();
1.54 + CleanupStack::Pop(); // self;
1.55 + return self;
1.56 + }
1.57 +
1.58 +CTIsolatedFontStore* CTIsolatedFontStore::NewLC(RHeap * aHeap)
1.59 + {
1.60 + CTIsolatedFontStore* self = new (ELeave)CTIsolatedFontStore(aHeap);
1.61 + CleanupStack::PushL(self);
1.62 + self->ConstructL();
1.63 + return self;
1.64 + }
1.65 +
1.66 +CTIsolatedFontStore* CTIsolatedFontStore::NewL(RHeap * aHeap)
1.67 + {
1.68 + CTIsolatedFontStore* self=CTIsolatedFontStore::NewLC(aHeap);
1.69 + CleanupStack::Pop(); // self;
1.70 + return self;
1.71 + }
1.72 +
1.73 +void CTIsolatedFontStore::ConstructL()
1.74 + {
1.75 + if(iIsHeapOwner)
1.76 + {
1.77 + iHeap = UserHeap::ChunkHeap(NULL,0x10000,0x10000);
1.78 + }
1.79 + iFs = CFontStore::NewL(iHeap);
1.80 + }
1.81 +
1.82 +/**
1.83 +Load all available font rasterizers and install to the instance of CFontStore
1.84 +this class contains.
1.85 +
1.86 +@pre This function hasn't previously been called on this object
1.87 +@post All rasterizers located and successfully loaded will be available for use
1.88 + */
1.89 +void CTIsolatedFontStore::LoadRasterizersL()
1.90 + {
1.91 + RImplInfoPtrArray implementationArray;
1.92 + TUid uid = {KUidOpenFontRasterizerPlunginInterface};
1.93 +
1.94 + // get implementation list
1.95 + ListImplementationsWithRetry(uid, implementationArray, EFalse);
1.96 +
1.97 + const TInt availCount = implementationArray.Count();
1.98 + for (TInt count=0; count < availCount; ++count)
1.99 + {
1.100 + const CImplementationInformation* info = implementationArray[count];
1.101 + // Create & install a rasterizer
1.102 + // ignore Leaves, as any necessary cleanup will have already been done through the cleanup stack
1.103 + TRAP_IGNORE(SafeInstallOfRasterizerL(info->ImplementationUid()));
1.104 + }
1.105 +
1.106 + // free memory
1.107 + implementationArray.ResetAndDestroy();
1.108 + }
1.109 +
1.110 +/**
1.111 +Helper function from CFbTop to List all available rasterizers.
1.112 +
1.113 +@param aInterfaceUid The UID of the ECOM plugin
1.114 +@param aImplementationArray An array to store the found plugins
1.115 +@param aRomOnly If ETrue only ROM plugins are returned, otherwise all drives are searched
1.116 +*/
1.117 +void CTIsolatedFontStore::ListImplementationsWithRetry(TUid& aInterfaceUid, RImplInfoPtrArray &aImplementationArray, TBool aRomOnly)
1.118 + {
1.119 + // Making sure that no race situation arises between FBserv and Ecom
1.120 + // If ECom is not ready, give it another chance and try again. if it still doesn't work
1.121 + // after the third try, then it just carries on quietly and fails...
1.122 + for (TInt ecomnotready =0; ecomnotready <3; ecomnotready++)
1.123 + {
1.124 + TInt ecomError = KErrNone;
1.125 + if (aRomOnly)
1.126 + {
1.127 + TEComResolverParams resParams;
1.128 + TRAP(ecomError, REComSession::ListImplementationsL(aInterfaceUid, resParams, KRomOnlyResolverUid, aImplementationArray));
1.129 + }
1.130 + else
1.131 + { // default resolver
1.132 + TRAP(ecomError, REComSession::ListImplementationsL(aInterfaceUid, aImplementationArray));
1.133 + }
1.134 +
1.135 + if (!ecomError)
1.136 + {
1.137 + return;
1.138 + }
1.139 + else
1.140 + {
1.141 + User::After(0);
1.142 + }
1.143 + }
1.144 + }
1.145 +
1.146 +/**
1.147 +Installs the rasterizer with the specified interface UID.
1.148 +
1.149 +@param aInterfaceImplUid The UID of the rasterizer to be installed.
1.150 +
1.151 +@see CFbTop::SafeInstallOfRasterizerL
1.152 + */
1.153 +void CTIsolatedFontStore::SafeInstallOfRasterizerL(TUid aInterfaceImplUid)
1.154 + {
1.155 + COpenFontRasterizer* rasterizer = COpenFontRasterizer::NewL(aInterfaceImplUid);
1.156 + CleanupStack::PushL(rasterizer);
1.157 + // Install it in the font store.
1.158 + iFs->InstallRasterizerL(rasterizer);
1.159 + CleanupStack::Pop(rasterizer);
1.160 + }