/*

* Copyright (c) 1996-2009 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: 

*

*/

#ifndef __FNTSTD_H__

#define __FNTSTD_H__

#include <e32std.h>

#include <graphics/shapeimpl.h>

/**

@internalComponent

*/

enum TFntStorePanic

	{

	EFntTypefaceIndexOutOfRange,

	EFntHeightIndexOutOfRange,

	EFntNoTypefaces,

	EFntNoTypefaceFontBitmaps,

	EFntTypefaceHasNoFontBitmaps,

	EFntFontBitmapNotLoaded,

	EFntFontAccessCountNonZero,

	EFntFontStoreFileInUse,

	EFntKPixelHeightInTwipsZero,

	EFntSessionCacheIndexOutOfRange,

	EFntMetricsIndexOutOfBounds,

	EFntNoFontFound,

	EFntRemovingAlreadyDeletedLinkedFont,

	EFntOverFlow,

	EFntMetricsNotOnHeap,

	EFntPointerNotByteAligned,

	};

/**

@internalComponent

*/

GLREF_C void Panic(TFntStorePanic aPanic);

// COpenFontSessionCacheList is placed here rather than openfont.cpp because it is used in fntstore.cpp as well.

class COpenFontSessionCache;

class COpenFont;

class COpenFontSessionCacheList

/**

@internalComponent

*/

	{

public:

	inline COpenFontSessionCacheList();

	TInt AddCache(COpenFontSessionCache* aCache);

	COpenFontSessionCache* FindCache(TInt aSessionHandle) const;

	void Delete(RHeap* aHeap);

	void DeleteCache(RHeap* aHeap,TInt aSessionHandle);

	void DeleteFontGlyphs(RHeap* aHeap,const COpenFont* aFont);

private:

	enum { EMaxNumCaches = 256 };

private:

	TInt iSessionHandleArray[EMaxNumCaches];

	TInt iCacheOffsetArray[EMaxNumCaches];

	};

inline COpenFontSessionCacheList::COpenFontSessionCacheList()

	{

	Mem::FillZ(this, sizeof(COpenFontSessionCacheList));

	}

/**

@internalComponent

*/

#ifdef __GCC32__

#define PACKED_STRUCTURE_PREFIX

#define PACKED_STRUCTURE_SUFFIX __attribute__(( __packed__))

#elif defined(__ARMCC__)

#define PACKED_STRUCTURE_PREFIX __packed

#define PACKED_STRUCTURE_SUFFIX

#else

#define PACKED_STRUCTURE_PREFIX

#define PACKED_STRUCTURE_SUFFIX

#endif

PACKED_STRUCTURE_PREFIX class TBitmapFontCharacterOffset

/**

Class to store an offset to the given position of a characters binary data in the 

bitmap section of the font file.

@internalComponent

*/

	{

public:

	TBitmapFontCharacterOffset();

	void InternalizeL(RReadStream& aStream);

public:

	TUint16 iBitmapOffset;  // restricts bitmap to 64k

	} PACKED_STRUCTURE_SUFFIX;

PACKED_STRUCTURE_PREFIX class TBitmapFontCharacterMetrics

/**

Character metrics stored in .GDR files.

This structure cannot be changed without changing the format of bitmap font

files (.GDR files). This is because a pointer to TBitmapFontCharacterMetrics is made to point

to part of the .GDR file in ROM.

@internalComponent

*/

	{

	public:

	TBitmapFontCharacterMetrics();

	void InternalizeL(RReadStream& aStream);

	TInt8 iAscentInPixels;

	TInt8 iHeightInPixels;

	TInt8 iLeftAdjustInPixels;

	TInt8 iMoveInPixels;

	TInt8 iRightAdjustInPixels;

	} PACKED_STRUCTURE_SUFFIX;

#endif