sl@0: // Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // Contains utility classes/functions which are
sl@0: // shared across multiple tests.
sl@0: 
sl@0: #include <gdi.h>
sl@0: #include <fbs.h>
sl@0: #include <fntstore.h>
sl@0: #include <ecom/ecom.h>
sl@0: #include <ecom/implementationproxy.h>
sl@0: #include <graphics/openfontconstants.h>
sl@0: #include <graphics/openfontrasterizer.h>
sl@0: #include <test/graphicsfontutils.h>
sl@0: 
sl@0: // The width of 1000 pixels, in twips
sl@0: const TInt KDefaultWidthInTwips = 11860;
sl@0: const TInt KDefaultHeightInTwips = 11860;
sl@0: 
sl@0: /* 
sl@0: Used for cleanup of RImplInfoArray implementationArray 
sl@0: in CCharCodeConverter::LoadOpenFontLibraries().
sl@0: */
sl@0: void ResetAndDestroyRImplInfoPtrArray(TAny* aPtr)
sl@0:     {
sl@0:     RImplInfoPtrArray* array = reinterpret_cast <RImplInfoPtrArray*> (aPtr);
sl@0:     array->ResetAndDestroy();
sl@0:     }
sl@0: 
sl@0: 
sl@0: CCharCodeConverter::CCharCodeConverter()
sl@0:     {
sl@0:     }
sl@0: 
sl@0: EXPORT_C CCharCodeConverter::~CCharCodeConverter()
sl@0:     {
sl@0:     if (iFont)
sl@0:         {
sl@0:         iFontStore->ReleaseFont(iFont);  
sl@0:         }
sl@0:     delete iFontStore;
sl@0:     REComSession::FinalClose();
sl@0:     }
sl@0: 
sl@0: EXPORT_C CCharCodeConverter* CCharCodeConverter::NewL()
sl@0:     {
sl@0:     CCharCodeConverter* self = new(ELeave) CCharCodeConverter();
sl@0:     CleanupStack::PushL(self);
sl@0:     self->ConstructL();
sl@0:     CleanupStack::Pop(1); // self;
sl@0:     return self;
sl@0:     }
sl@0: 
sl@0: EXPORT_C CCharCodeConverter* CCharCodeConverter::NewLC()
sl@0:     {
sl@0:     CCharCodeConverter* self = new(ELeave) CCharCodeConverter();
sl@0:     CleanupStack::PushL(self);
sl@0:     self->ConstructL();
sl@0:     return self;
sl@0:     }
sl@0: 
sl@0: void CCharCodeConverter::ConstructL()
sl@0:     {
sl@0:     // Setup fontstore...
sl@0:     iFontStore = CFontStore::NewL(&User::Heap());
sl@0:     iFontStore->iKPixelWidthInTwips = KDefaultWidthInTwips;
sl@0:     iFontStore->iKPixelHeightInTwips = KDefaultHeightInTwips;
sl@0:     //load all ecom implemented rasterizer dlls. installs the rasterizer.
sl@0:     LoadOpenFontLibraries(iFontStore);
sl@0:     //add any required font files
sl@0:     iFontStore->LoadFontsAtStartupL();  
sl@0:     }
sl@0: 
sl@0: void CCharCodeConverter::LoadOpenFontLibraries(CFontStore* aFontStore)
sl@0:      {
sl@0:      RImplInfoPtrArray implementationArray;
sl@0:      TCleanupItem cleanup(ResetAndDestroyRImplInfoPtrArray, &implementationArray);
sl@0:      CleanupStack::PushL(cleanup);
sl@0:      TInt error;
sl@0:      TInt ecomerror;
sl@0:      TInt ecomnotready;
sl@0:      TUid uid = {KUidOpenFontRasterizerPlunginInterface};
sl@0:  
sl@0:      // Making sure that no race situation arises
sl@0:      // If ECom is not ready, give it another chance and try again. if it still doesn't work 
sl@0:      // after the third try, then it just carries on quietly and fails... 
sl@0:      for (ecomnotready = 0; ecomnotready < 3; ecomnotready++)
sl@0:          {
sl@0:          TRAP(ecomerror,REComSession::ListImplementationsL(uid, implementationArray));
sl@0:          if (ecomerror == KErrNone)
sl@0:              {
sl@0:              break;
sl@0:              }
sl@0:          else
sl@0:              {
sl@0:              ecomerror = KErrNone;
sl@0:              User::After(0);
sl@0:              }
sl@0:          }
sl@0:  
sl@0:      const TInt availCount = implementationArray.Count();
sl@0:      for (TInt count = 0; count < availCount; ++count)
sl@0:          {
sl@0:          const CImplementationInformation* info = implementationArray[count];
sl@0:          TUid rasterizerUid = info->ImplementationUid();
sl@0:          // Create a rasterizer
sl@0:          COpenFontRasterizer* rasterizer = 0;
sl@0:          TRAP(error,rasterizer = COpenFontRasterizer::NewL(rasterizerUid));
sl@0:          if (!error)
sl@0:              {
sl@0:              // Install it in the font store.
sl@0:              TRAP(error,aFontStore->InstallRasterizerL(rasterizer));
sl@0:              if (error)
sl@0:                  {
sl@0:                  delete rasterizer;
sl@0:                  }
sl@0:              }
sl@0:          }
sl@0:      CleanupStack::PopAndDestroy(&implementationArray);  
sl@0:      }
sl@0: 
sl@0: /**
sl@0: Tells the converter which font object is to be used when 
sl@0: converting character codes to glyph codes.
sl@0: @param aFont The font to use for conversion of codes
sl@0:  */
sl@0: EXPORT_C void CCharCodeConverter::UseFontL(CFbsFont* aFont)
sl@0:     {
sl@0:     User::LeaveIfNull(iFontStore);
sl@0:     if (iFont)
sl@0:         {
sl@0:         iFontStore->ReleaseFont(iFont);
sl@0:         iFont = NULL;
sl@0:         iGlyphIndexExt = NULL;
sl@0:         }
sl@0:     // Setup font interface...
sl@0:     TFontSpec testFontSpec(aFont->FontSpecInTwips().iTypeface.Name(), aFont->HeightInPixels()); 
sl@0:     CFont* cfont = 0;
sl@0:     iFontStore->GetNearestFontToDesignHeightInPixels(*&cfont, testFontSpec);    
sl@0:     iFont = (CBitmapFont*)cfont;
sl@0:     User::LeaveIfNull(iFont);
sl@0:     TAny* ext = 0;
sl@0:     // This is the interface used to get the glyph code index from the rasterizer..
sl@0:     iFont->OpenFont()->ExtendedInterface(KUidOpenFontShapingExtension, ext);
sl@0:     iGlyphIndexExt = reinterpret_cast<MOpenFontShapingExtension*>(ext);
sl@0:     User::LeaveIfNull(ext);
sl@0:     }
sl@0: 
sl@0: /**
sl@0: Returns the glyph code for the given character code, for the 
sl@0: font that this object was constructed with. No shaping of
sl@0: the characters is performed by this function.
sl@0: @param aCharCode The character code to request the glyph code for.
sl@0: @return The glyph code
sl@0:  */
sl@0: EXPORT_C TInt CCharCodeConverter::GlyphCodeL(TInt aCharCode) const
sl@0:     {
sl@0:     // If a leave occurs, it's because UseFontL() has
sl@0:     // not been successfully called.
sl@0:     User::LeaveIfNull(iGlyphIndexExt);
sl@0:     TInt glyphCode = iGlyphIndexExt->GlyphIndex(aCharCode);
sl@0:     return glyphCode;
sl@0:     }
sl@0: 
sl@0: