main/sw/source/core/inc/fntcache.hxx

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


#ifndef _FNTCACHE_HXX
#define _FNTCACHE_HXX

#include <vcl/font.hxx>
#include <tools/mempool.hxx>

#include "swtypes.hxx"
#include "swcache.hxx"

class Printer;
class OutputDevice;
class FontMetric;
class SwFntObj;
class SwDrawTextInfo;	// DrawText
class ViewShell;
class SwSubFont;
class MapMode;

/*************************************************************************
 *                      class SwFntCache
 *************************************************************************/

class SwFntCache : public SwCache
{
public:

	inline SwFntCache() : SwCache(50,50
#ifdef DBG_UTIL
	, ByteString( RTL_CONSTASCII_STRINGPARAM(
						"Globaler Font-Cache pFntCache" ))
#endif
	) {}

	inline SwFntObj *First( ) { return (SwFntObj *)SwCache::First(); }
	inline SwFntObj *Next( SwFntObj *pFntObj)
		{ return (SwFntObj *)SwCache::Next( (SwCacheObj *)pFntObj ); }
	void Flush();
};

// Font-Cache, globale Variable, in txtinit.Cxx angelegt/zerstoert
extern SwFntCache *pFntCache;
extern SwFntObj *pLastFont;
extern sal_uInt8 *pMagicNo;
extern Color *pWaveCol;

/*************************************************************************
 *                      class SwFntObj
 *************************************************************************/

class SwFntObj : public SwCacheObj
{
	friend class SwFntAccess;
	friend void _InitCore();
	friend void _FinitCore();

	Font aFont;
	Font *pScrFont;
	Font *pPrtFont;
    OutputDevice* pPrinter;
    sal_uInt16 nGuessedLeading;
    sal_uInt16 nExtLeading;
	sal_uInt16 nScrAscent;
	sal_uInt16 nPrtAscent;
	sal_uInt16 nScrHeight;
	sal_uInt16 nPrtHeight;
	sal_uInt16 nPropWidth;
	sal_uInt16 nZoom;
	sal_Bool bSymbol : 1;
	sal_Bool bPaintBlank : 1;

	static long nPixWidth;
	static MapMode *pPixMap;
	static OutputDevice *pPixOut;

    // SMARTTAGS
    void calcLinePos(SwDrawTextInfo& rInf, Point& aStart, Point& aEnd, xub_StrLen nStart,
       xub_StrLen nWrLen, xub_StrLen nCnt, const sal_Bool bSwitchH2V, const sal_Bool bSwitchL2R,
       long nHalfSpace, long* pKernArray, const sal_Bool bBidiPor);

public:
	DECL_FIXEDMEMPOOL_NEWDEL(SwFntObj)

	SwFntObj( const SwSubFont &rFont, const void* pOwner,
			  ViewShell *pSh );

	virtual ~SwFntObj();

	inline 		 Font *GetScrFont()		{ return pScrFont; }
	inline 		 Font *GetFont()		{ return &aFont; }
	inline const Font *GetFont() const  { return &aFont; }

    inline sal_uInt16 GetGuessedLeading() const  { return nGuessedLeading; }
    inline sal_uInt16 GetExtLeading() const  { return nExtLeading; }

    sal_uInt16 GetFontAscent( const ViewShell *pSh, const OutputDevice& rOut );
    sal_uInt16 GetFontHeight( const ViewShell *pSh, const OutputDevice& rOut );
    sal_uInt16 GetFontLeading( const ViewShell *pSh, const OutputDevice& rOut );

    void GuessLeading( const ViewShell& rSh, const FontMetric& rMet );

    void SetDevFont( const ViewShell *pSh, OutputDevice& rOut );
    inline OutputDevice* GetPrt() const { return pPrinter; }
	inline sal_uInt16	GetZoom() const { return nZoom; }
	inline sal_uInt16	GetPropWidth() const { return nPropWidth; }
	inline sal_Bool		IsSymbol() const { return bSymbol; }

	void   DrawText( SwDrawTextInfo &rInf );
	Size  GetTextSize( SwDrawTextInfo &rInf );
	xub_StrLen GetCrsrOfst( SwDrawTextInfo &rInf );

    void CreateScrFont( const ViewShell& rSh, const OutputDevice& rOut );
    void CreatePrtFont( const OutputDevice& rOut );
};

/*************************************************************************
 *                      class SwFntAccess
 *************************************************************************/


class SwFntAccess : public SwCacheAccess
{
	ViewShell *pShell;
protected:
	virtual SwCacheObj *NewObj( );

public:
	SwFntAccess( const void * &rMagic, sal_uInt16 &rIndex, const void *pOwner,
				 ViewShell *pShell,
				 sal_Bool bCheck = sal_False  );
    inline SwFntObj* Get() { return (SwFntObj*) SwCacheAccess::Get(); };
};


#endif