xref: /aoo42x/main/vcl/inc/impfont.hxx (revision 43ad51ff)

/**************************************************************
 *
 * 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 _SV_IMPFONT_HXX
#define _SV_IMPFONT_HXX

#include <tools/gen.hxx>
#include <tools/string.hxx>
#include <i18npool/lang.h>
#include <tools/color.hxx>
#include <vcl/dllapi.h>
#include <vcl/vclenum.hxx>
#include <vcl/fntstyle.hxx>
#include <outfont.hxx>

// ------------
// - Impl_Font -
// ------------

class Impl_Font
{
public:
             Impl_Font();
             Impl_Font( const Impl_Font& );

    bool     operator==( const Impl_Font& ) const;

    FontPitch           GetPitch()      { if(mePitch==PITCH_DONTKNOW)    AskConfig(); return mePitch; }
    FontFamily          GetFamily()     { if(meFamily==FAMILY_DONTKNOW)  AskConfig(); return meFamily; }
    FontItalic          GetItalic()     { if(meItalic==ITALIC_DONTKNOW)  AskConfig(); return meItalic; }
    FontWeight          GetWeight()     { if(meWeight==WEIGHT_DONTKNOW)  AskConfig(); return meWeight; }
    FontWidth           GetWidthType()  { if(meWidthType==WIDTH_DONTKNOW)AskConfig(); return meWidthType; }

private:
    friend class Font;
    void                AskConfig();

	int					mnRefCount;
	String				maFamilyName;
	String				maStyleName;
	Size				maSize;
	Color				maColor;		// compatibility, now on output device
	Color				maFillColor;	// compatibility, now on output device
	rtl_TextEncoding	meCharSet;
	LanguageType		meLanguage;
	LanguageType		meCJKLanguage;
	FontFamily			meFamily;
	FontPitch			mePitch;
	TextAlign			meAlign;
	FontWeight			meWeight;
	FontWidth			meWidthType;
	FontItalic			meItalic;
	FontUnderline		meUnderline;
	FontUnderline		meOverline;
	FontStrikeout		meStrikeout;
	FontRelief			meRelief;
	FontEmphasisMark	meEmphasisMark;
	FontType			meType;			// used by metrics only
	short				mnOrientation;
	FontKerning 		mnKerning;
	sal_Bool				mbWordLine:1,
                        mbOutline:1,
                        mbConfigLookup:1,   // there was a config lookup
						mbShadow:1,
						mbVertical:1,
						mbTransparent:1;	// compatibility, now on output device

	friend SvStream&	operator>>( SvStream& rIStm, Impl_Font& );
	friend SvStream&	operator<<( SvStream& rOStm, const Impl_Font& );
};

// ------------------
// - ImplFontMetric -
// ------------------

class ImplFontMetric
{
    friend class OutputDevice;

private:
    long    mnAscent;      // Ascent
    long    mnDescent;     // Descent
    long    mnIntLeading;  // Internal Leading
    long    mnExtLeading;  // External Leading
    long    mnLineHeight;  // Ascent+Descent+EmphasisMark
    long    mnSlant;       // Slant
    sal_uInt16  mnMiscFlags;   // Misc Flags
    sal_uInt32  mnRefCount;    // Reference Counter

    enum { DEVICE_FLAG=1, SCALABLE_FLAG=2, LATIN_FLAG=4, CJK_FLAG=8, CTL_FLAG=16 };

public:
            ImplFontMetric();
    void    AddReference();
    void    DeReference();

    long    GetAscent() const       { return mnAscent; }
    long    GetDescent() const      { return mnDescent; }
    long    GetIntLeading() const   { return mnIntLeading; }
    long    GetExtLeading() const   { return mnExtLeading; }
    long    GetLineHeight() const   { return mnLineHeight; }
    long    GetSlant() const        { return mnSlant; }

    bool    IsDeviceFont() const    { return ((mnMiscFlags & DEVICE_FLAG) != 0); }
    bool    IsScalable() const      { return ((mnMiscFlags & SCALABLE_FLAG) != 0); }
    bool    SupportsLatin() const   { return ((mnMiscFlags & LATIN_FLAG) != 0); }
    bool    SupportsCJK() const     { return ((mnMiscFlags & CJK_FLAG) != 0); }
    bool    SupportsCTL() const     { return ((mnMiscFlags & CTL_FLAG) != 0); }

    bool    operator==( const ImplFontMetric& ) const;
};

// ------------------
// - ImplFontHints -
// ------------------

class ImplFontOptions
{
public:
    FontEmbeddedBitmap meEmbeddedBitmap; // whether the embedded bitmaps should be used
    FontAntiAlias      meAntiAlias;      // whether the font should be antialiased
    FontAutoHint       meAutoHint;       // whether the font should be autohinted
    FontHinting        meHinting;        // whether the font should be hinted
    FontHintStyle      meHintStyle;      // type of font hinting to be used
public:
    ImplFontOptions() :
        meEmbeddedBitmap(EMBEDDEDBITMAP_DONTKNOW),
        meAntiAlias(ANTIALIAS_DONTKNOW),
        meAutoHint(AUTOHINT_DONTKNOW),
        meHinting(HINTING_DONTKNOW),
        meHintStyle(HINT_SLIGHT)
    {}
    ImplFontOptions( FontEmbeddedBitmap eEmbeddedBitmap, FontAntiAlias eAntiAlias,
        FontAutoHint eAutoHint, FontHinting eHinting, FontHintStyle eHintStyle) :
        meEmbeddedBitmap(eEmbeddedBitmap),
        meAntiAlias(eAntiAlias),
        meAutoHint(eAutoHint),
        meHinting(eHinting),
        meHintStyle(eHintStyle)
    {}
    FontAutoHint GetUseAutoHint() const { return meAutoHint; }
    FontHintStyle GetHintStyle() const { return meHintStyle; }
    bool DontUseEmbeddedBitmaps() const { return meEmbeddedBitmap == EMBEDDEDBITMAP_FALSE; }
    bool DontUseAntiAlias() const { return meAntiAlias == ANTIALIAS_FALSE; }
    bool DontUseHinting() const { return (meHinting == HINTING_FALSE) || (GetHintStyle() == HINT_NONE); }
};

// -------------------
// - ImplFontCharMap -
// -------------------

class CmapResult;

class VCL_PLUGIN_PUBLIC ImplFontCharMap
{
public:
    explicit             ImplFontCharMap( const CmapResult& );
    virtual              ~ImplFontCharMap();

	static ImplFontCharMap* GetDefaultMap( bool bSymbols=false);

    bool                IsDefaultMap() const;
    bool                HasChar( sal_uInt32 ) const;
    int                 CountCharsInRange( sal_uInt32 cMin, sal_uInt32 cMax ) const;
    int                 GetCharCount() const;

    sal_uInt32          GetFirstChar() const;
    sal_uInt32          GetLastChar() const;

    sal_uInt32          GetNextChar( sal_uInt32 ) const;
    sal_uInt32          GetPrevChar( sal_uInt32 ) const;

    int                 GetIndexFromChar( sal_uInt32 ) const;
    sal_uInt32          GetCharFromIndex( int ) const;

    void                AddReference() const;
    void                DeReference() const;

    int                 GetGlyphIndex( sal_uInt32 ) const;

private:
    int                 ImplFindRangeIndex( sal_uInt32 ) const;

    // prevent assignment and copy construction
    explicit            ImplFontCharMap( const ImplFontCharMap& );
    void                operator=( const ImplFontCharMap& );

private:
    const sal_uInt32*   mpRangeCodes;     // pairs of StartCode/(EndCode+1)
    const int*          mpStartGlyphs;    // range-specific mapper to glyphs
    const sal_uInt16*       mpGlyphIds;       // individual glyphid mappings
    int                 mnRangeCount;
    int                 mnCharCount;      // covered codepoints
    mutable int         mnRefCount;
};

// CmapResult is a normalized version of the many CMAP formats
class VCL_PLUGIN_PUBLIC CmapResult
{
public:
	explicit	CmapResult( bool bSymbolic = false,
					const sal_uInt32* pRangeCodes = NULL, int nRangeCount = 0,
					const int* pStartGlyphs = 0, const sal_uInt16* pGlyphIds = NULL );

	const sal_uInt32* mpRangeCodes;
	const int*        mpStartGlyphs;
	const sal_uInt16*     mpGlyphIds;
	int			      mnRangeCount;
	bool		      mbSymbolic;
	bool			  mbRecoded;
};

bool ParseCMAP( const unsigned char* pRawData, int nRawLength, CmapResult& );

void UpdateAttributesFromPSName( const String& rPSName, ImplDevFontAttributes& );

#endif // _SV_IMPFONT_HXX