vcl/inc/outfont.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   9  * This file incorporates work covered by the following license notice:
  10  *
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  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef _SV_OUTFONT_HXX
  21 #define _SV_OUTFONT_HXX
  22
  23 #include <sal/types.h>
  24 #include <tools/string.hxx>
  25 #include <i18nlangtag/lang.h>
  26 #include <tools/solar.h>
  27 #include <vcl/dllapi.h>
  28 #include <unotools/fontdefs.hxx>
  29 #include <vcl/vclenum.hxx>
  30
  31 #include <boost/unordered_map.hpp>
  32
  33 class ImplDevFontListData;
  34 class ImplGetDevFontList;
  35 class ImplGetDevSizeList;
  36 class ImplFontEntry;
  37 class ImplDirectFontSubstitution;
  38 class ImplPreMatchFontSubstitution;
  39 class ImplGlyphFallbackFontSubstitution;
  40 class FontSelectPattern;
  41 class Font;
  42 class ConvertChar;
  43 struct FontMatchStatus;
  44 class OutputDevice;
  45 class Size;
  46
  47 namespace com { namespace sun { namespace star { namespace lang { struct Locale; }}}}
  48
  49 // ----------------------
  50 // - ImplFontAttributes -
  51 // ----------------------
  52 // device independent font properties
  53
  54 class ImplFontAttributes
  55 {
  56 public: // TODO: create matching interface class
  57     const OUString& GetFamilyName() const   { return maName; }
  58     const OUString& GetStyleName() const    { return maStyleName; }
  59     FontWeight      GetWeight() const       { return meWeight; }
  60     FontItalic      GetSlant() const        { return meItalic; }
  61     FontFamily      GetFamilyType() const   { return meFamily; }
  62     FontPitch       GetPitch() const        { return mePitch; }
  63     FontWidth       GetWidthType() const    { return meWidthType; }
  64     bool            IsSymbolFont() const    { return mbSymbolFlag; }
  65     void            SetFamilyName(const OUString sFamilyName)    { maName = sFamilyName; }
  66     void            SetStyleName( const OUString sStyleName)     { maStyleName = sStyleName; }
  67     void            SetFamilyType(const FontFamily eFontFamily)  { meFamily = eFontFamily; }
  68     void            SetPitch(const FontPitch ePitch )          { mePitch = ePitch; }
  69     void            SetItalic(const FontItalic eItalic )       { meItalic = eItalic; }
  70     void            SetWeight(const FontWeight eWeight )       { meWeight = eWeight; }
  71     void            SetWidthType(const FontWidth eWidthType)   { meWidthType = eWidthType; }
  72     void            SetSymbolFlag(const bool bSymbolFlag )     { mbSymbolFlag = bSymbolFlag; }
  73     bool operator==(const ImplFontAttributes& rOther) const;
  74     bool operator!=(const ImplFontAttributes& rOther) const
  75     {
  76         return !(*this == rOther);
  77     }
  78
  79 private:
  80     OUString        maName;         // Font Family Name
  81     OUString        maStyleName;    // Font Style Name
  82     FontWeight      meWeight;       // Weight Type
  83     FontItalic      meItalic;       // Slant Type
  84     FontFamily      meFamily;       // Family Type
  85     FontPitch       mePitch;        // Pitch Type
  86     FontWidth       meWidthType;    // Width Type
  87     bool            mbSymbolFlag;
  88 };
  89
  90 // -------------------------
  91 // - ImplDevFontAttributes -
  92 // -------------------------
  93 // device dependent font properties
  94
  95 class ImplDevFontAttributes : public ImplFontAttributes
  96 {
  97 public: // TODO: create matching interface class
  98     const String&      GetAliasNames() const     { return maMapNames; }
  99     int                GetQuality() const        { return mnQuality; }
 100     bool               IsRotatable() const       { return mbOrientation; }
 101     bool               IsDeviceFont() const      { return mbDevice; }
 102     bool               IsEmbeddable() const      { return mbEmbeddable; }
 103     bool               IsSubsettable() const     { return mbSubsettable; }
 104
 105 public: // TODO: hide members behind accessor methods
 106     String             maMapNames;       // List of family name aliass separated with ';'
 107     int                mnQuality;        // Quality (used when similar fonts compete)
 108     bool               mbOrientation;    // true: physical font can be rotated
 109     bool               mbDevice;         // true: built in font
 110     bool               mbSubsettable;    // true: a subset of the font can be created
 111     bool               mbEmbeddable;     // true: the font can be embedded
 112 };
 113
 114 // ----------------
 115 // - PhysicalFontFace -
 116 // ----------------
 117 // TODO: no more direct access to members
 118 // TODO: add reference counting
 119 // TODO: get rid of height/width for scalable fonts
 120 // TODO: make cloning cheaper
 121
 122 // abstract base class for physical font faces
 123 class VCL_PLUGIN_PUBLIC PhysicalFontFace : public ImplDevFontAttributes
 124 {
 125 public:
 126     // by using an PhysicalFontFace object as a factory for its corresponding
 127     // ImplFontEntry an ImplFontEntry can be extended to cache device and
 128     // font instance specific data
 129     virtual ImplFontEntry*  CreateFontInstance( FontSelectPattern& ) const = 0;
 130
 131     virtual int             GetHeight() const           { return mnHeight; }
 132     virtual int             GetWidth() const            { return mnWidth; }
 133     virtual sal_IntPtr      GetFontId() const = 0;
 134     int                     GetFontMagic() const        { return mnMagic; }
 135     bool                    IsScalable() const          { return (mnHeight == 0); }
 136     bool                    CheckMagic( int n ) const   { return (n == mnMagic); }
 137     PhysicalFontFace*       GetNextFace() const         { return mpNext; }
 138     PhysicalFontFace*       CreateAlias() const         { return Clone(); }
 139
 140     bool                    IsBetterMatch( const FontSelectPattern&, FontMatchStatus& ) const;
 141     sal_Int32           CompareWithSize( const PhysicalFontFace& ) const;
 142     sal_Int32           CompareIgnoreSize( const PhysicalFontFace& ) const;
 143     virtual                 ~PhysicalFontFace() {}
 144     virtual PhysicalFontFace* Clone() const = 0;
 145
 146 protected:
 147     explicit                PhysicalFontFace( const ImplDevFontAttributes&, int nMagic );
 148     void                    SetBitmapSize( int nW, int nH ) { mnWidth=nW; mnHeight=nH; }
 149
 150     long                    mnWidth;    // Width (in pixels)
 151     long                    mnHeight;   // Height (in pixels)
 152
 153 private:
 154 friend class ImplDevFontListData;
 155     const int               mnMagic;    // poor man's RTTI
 156     PhysicalFontFace*       mpNext;
 157 };
 158
 159 class FontSelectPatternAttributes : public ImplFontAttributes
 160 {
 161 public:
 162                         FontSelectPatternAttributes( const Font&, const String& rSearchName,
 163                             const Size&, float fExactHeight );
 164                         FontSelectPatternAttributes( const PhysicalFontFace&, const Size&,
 165                             float fExactHeight, int nOrientation, bool bVertical );
 166
 167     size_t              hashCode() const;
 168     bool operator==(const FontSelectPatternAttributes& rOther) const;
 169     bool operator!=(const FontSelectPatternAttributes& rOther) const
 170     {
 171         return !(*this == rOther);
 172     }
 173
 174 public:
 175     OUString            maTargetName;       // name of the font name token that is chosen
 176     OUString            maSearchName;       // name of the font that matches best
 177     int                 mnWidth;            // width of font in pixel units
 178     int                 mnHeight;           // height of font in pixel units
 179     float               mfExactHeight;      // requested height (in pixels with subpixel details)
 180     int                 mnOrientation;      // text orientation in 3600 system
 181     LanguageType        meLanguage;         // text language
 182     bool                mbVertical;         // vertical mode of requested font
 183     bool                mbNonAntialiased;   // true if antialiasing is disabled
 184
 185     bool                mbEmbolden;         // Force emboldening
 186     ItalicMatrix        maItalicMatrix;     // Force matrix for slant
 187 };
 188
 189 class FontSelectPattern : public FontSelectPatternAttributes
 190 {
 191 public:
 192                         FontSelectPattern( const Font&, const String& rSearchName,
 193                             const Size&, float fExactHeight );
 194 #ifdef WNT
 195 // ifdeffed to prevent it going into unusedcode.easy
 196                         FontSelectPattern( const PhysicalFontFace&, const Size&,
 197                             float fExactHeight, int nOrientation, bool bVertical );
 198 #endif
 199
 200 public: // TODO: change to private
 201     const PhysicalFontFace* mpFontData;         // a matching PhysicalFontFace object
 202     ImplFontEntry*      mpFontEntry;        // pointer to the resulting FontCache entry
 203     void copyAttributes(const FontSelectPatternAttributes &rAttributes);
 204 };
 205
 206 // -------------------
 207 // - ImplDevFontList -
 208 // -------------------
 209 // TODO: merge with ImplFontCache
 210 // TODO: rename to LogicalFontManager
 211
 212 class VCL_PLUGIN_PUBLIC ImplDevFontList
 213 {
 214 private:
 215     friend class WinGlyphFallbackSubstititution;
 216     mutable bool            mbMatchData;    // true if matching attributes are initialized
 217     bool                    mbMapNames;     // true if MapNames are available
 218
 219     typedef boost::unordered_map<const String, ImplDevFontListData*,FontNameHash> DevFontList;
 220     DevFontList             maDevFontList;
 221
 222     ImplPreMatchFontSubstitution* mpPreMatchHook;       // device specific prematch substitution
 223     ImplGlyphFallbackFontSubstitution* mpFallbackHook;  // device specific glyh fallback substitution
 224
 225 public:
 226     explicit                ImplDevFontList();
 227     virtual                 ~ImplDevFontList();
 228
 229     // fill the list with device fonts
 230     void                    Add( PhysicalFontFace* );
 231     void                    Clear();
 232     int                     Count() const { return maDevFontList.size(); }
 233
 234     // find the device font
 235     ImplDevFontListData*    FindFontFamily( const String& rFontName ) const;
 236     ImplDevFontListData*    ImplFindByFont( FontSelectPattern&, bool bPrinter, ImplDirectFontSubstitution* ) const;
 237     ImplDevFontListData*    ImplFindBySearchName( const OUString& ) const;
 238
 239     // suggest fonts for glyph fallback
 240     ImplDevFontListData*    GetGlyphFallbackFont( FontSelectPattern&,
 241                         OUString& rMissingCodes, int nFallbackLevel ) const;
 242
 243     // prepare platform specific font substitutions
 244     void                    SetPreMatchHook( ImplPreMatchFontSubstitution* );
 245     void                    SetFallbackHook( ImplGlyphFallbackFontSubstitution* );
 246
 247     // misc utilities
 248     ImplDevFontList*        Clone( bool bScalable, bool bEmbeddable ) const;
 249     ImplGetDevFontList*     GetDevFontList() const;
 250     ImplGetDevSizeList*     GetDevSizeList( const String& rFontName ) const;
 251
 252     ImplDevFontListData*    ImplFindByTokenNames(const OUString& rTokenStr) const;
 253
 254 protected:
 255     void                    InitMatchData() const;
 256     bool                    AreMapNamesAvailable() const { return mbMapNames; }
 257
 258     ImplDevFontListData*    ImplFindByAliasName(const OUString& rSearchName,
 259         const OUString& rShortName) const;
 260     ImplDevFontListData*    ImplFindBySubstFontAttr( const utl::FontNameAttr& ) const;
 261     ImplDevFontListData*    ImplFindByAttributes(sal_uLong nSearchType, FontWeight, FontWidth,
 262                                                  FontItalic, const OUString& rSearchFamily) const;
 263     ImplDevFontListData*    FindDefaultFont() const;
 264
 265 private:
 266     void                    InitGenericGlyphFallback() const;
 267     mutable ImplDevFontListData**   mpFallbackList;
 268     mutable int                     mnFallbackCount;
 269 };
 270
 271 // --------------------
 272 // - ImplKernPairData -
 273 // --------------------
 274
 275 struct ImplKernPairData
 276 {
 277     sal_uInt16          mnChar1;
 278     sal_uInt16          mnChar2;
 279     long                mnKern;
 280 };
 281
 282
 283 // -----------------------
 284 // - ImplFontMetricData -
 285 // -----------------------
 286
 287 class ImplFontMetricData : public ImplFontAttributes
 288 {
 289 public:
 290     explicit ImplFontMetricData( const FontSelectPattern& );
 291     void    ImplInitTextLineSize( const OutputDevice* pDev );
 292     void    ImplInitAboveTextLineSize();
 293
 294 public: // TODO: hide members behind accessor methods
 295     // font instance attributes from the font request
 296     long                mnWidth;                    // Reference Width
 297     short               mnOrientation;              // Rotation in 1/10 degrees
 298
 299     // font metrics measured for the font instance
 300     long                mnAscent;                   // Ascent
 301     long                mnDescent;                  // Descent
 302     long                mnIntLeading;               // Internal Leading
 303     long                mnExtLeading;               // External Leading
 304     int                 mnSlant;                    // Slant (Italic/Oblique)
 305     long                mnMinKashida;               // Minimal width of kashida (Arabic)
 306
 307     // font attributes queried from the font instance
 308     int                 meFamilyType;               // Font Family Type
 309     bool                mbDevice;                   // Flag for Device Fonts
 310     bool                mbScalableFont;
 311     bool                mbKernableFont;
 312
 313     // font metrics that are usually derived from the measurements
 314     long                mnUnderlineSize;            // Lineheight of Underline
 315     long                mnUnderlineOffset;          // Offset from Underline to Baseline
 316     long                mnBUnderlineSize;           // Height of bold underline
 317     long                mnBUnderlineOffset;         // Offset from bold underline to baseline
 318     long                mnDUnderlineSize;           // Height of double underline
 319     long                mnDUnderlineOffset1;        // Offset from double underline to baseline
 320     long                mnDUnderlineOffset2;        // Offset from double underline to baseline
 321     long                mnWUnderlineSize;           // Height of WaveLine underline
 322     long                mnWUnderlineOffset;         // Offset from WaveLine underline to baseline, but centrered to WaveLine
 323     long                mnAboveUnderlineSize;       // Height of single underline (for Vertical Right)
 324     long                mnAboveUnderlineOffset;     // Offset from single underline to baseline (for Vertical Right)
 325     long                mnAboveBUnderlineSize;      // Height of bold underline (for Vertical Right)
 326     long                mnAboveBUnderlineOffset;    // Offset from bold underline to baseline (for Vertical Right)
 327     long                mnAboveDUnderlineSize;      // Height of double underline (for Vertical Right)
 328     long                mnAboveDUnderlineOffset1;   // Offset from double underline to baseline (for Vertical Right)
 329     long                mnAboveDUnderlineOffset2;   // Offset from double underline to baseline (for Vertical Right)
 330     long                mnAboveWUnderlineSize;      // Height of WaveLine-strike-out (for Vertical Right)
 331     long                mnAboveWUnderlineOffset;    // Offset from WaveLine-strike-out to baseline, but centrered to to WaveLine (for Vertical Right)
 332     long                mnStrikeoutSize;            // Height of single strike-out
 333     long                mnStrikeoutOffset;          // Offset from single strike-out to baseline
 334     long                mnBStrikeoutSize;           // Height of bold strike-out
 335     long                mnBStrikeoutOffset;         // Offset of bold strike-out to baseline
 336     long                mnDStrikeoutSize;           // Height of double strike-out
 337     long                mnDStrikeoutOffset1;        // Offset of double strike-out to baseline
 338     long                mnDStrikeoutOffset2;        // Offset of double strike-out to baseline
 339 };
 340
 341 // -----------------
 342 // - ImplFontEntry -
 343 // ------------------
 344 // TODO: rename ImplFontEntry to LogicalFontInstance
 345 // TODO: allow sharing of metrics for related fonts
 346
 347 class VCL_PLUGIN_PUBLIC ImplFontEntry
 348 {
 349 public:
 350     explicit            ImplFontEntry( const FontSelectPattern& );
 351     virtual             ~ImplFontEntry();
 352
 353 public: // TODO: make data members private
 354     FontSelectPattern  maFontSelData;      // FontSelectionData
 355     ImplFontMetricData  maMetric;           // Font Metric
 356     const ConvertChar*  mpConversion;       // used e.g. for StarBats->StarSymbol
 357     long                mnLineHeight;
 358     sal_uLong               mnRefCount;
 359     sal_uInt16              mnSetFontFlags;     // Flags returned by SalGraphics::SetFont()
 360     short               mnOwnOrientation;   // text angle if lower layers don't rotate text themselves
 361     short               mnOrientation;      // text angle in 3600 system
 362     bool                mbInit;             // true if maMetric member is valid
 363
 364     void                AddFallbackForUnicode( sal_UCS4, FontWeight eWeight, const String& rFontName );
 365     bool                GetFallbackForUnicode( sal_UCS4, FontWeight eWeight, OUString* pFontName ) const;
 366     void                IgnoreFallbackForUnicode( sal_UCS4, FontWeight eWeight, const String& rFontName );
 367
 368 private:
 369     // cache of Unicode characters and replacement font names
 370     // TODO: a fallback map can be shared with many other ImplFontEntries
 371     // TODO: at least the ones which just differ in orientation, stretching or height
 372     typedef ::std::pair<sal_UCS4,FontWeight> GFBCacheKey;
 373     struct GFBCacheKey_Hash{ size_t operator()( const GFBCacheKey& ) const; };
 374     typedef ::boost::unordered_map<GFBCacheKey,String,GFBCacheKey_Hash> UnicodeFallbackList;
 375     UnicodeFallbackList* mpUnicodeFallbackList;
 376 };
 377
 378
 379 class ImplTextLineInfo
 380 {
 381 private:
 382     long        mnWidth;
 383     xub_StrLen  mnIndex;
 384     xub_StrLen  mnLen;
 385
 386 public:
 387                 ImplTextLineInfo( long nWidth, xub_StrLen nIndex, xub_StrLen nLen )
 388                 {
 389                     mnWidth = nWidth;
 390                     mnIndex = nIndex;
 391                     mnLen   = nLen;
 392                 }
 393
 394     long        GetWidth() const { return mnWidth; }
 395     xub_StrLen  GetIndex() const { return mnIndex; }
 396     xub_StrLen  GetLen() const { return mnLen; }
 397 };
 398
 399 #define MULTITEXTLINEINFO_RESIZE    16
 400 typedef ImplTextLineInfo* PImplTextLineInfo;
 401
 402 class ImplMultiTextLineInfo
 403 {
 404 private:
 405     PImplTextLineInfo*  mpLines;
 406     xub_StrLen          mnLines;
 407     xub_StrLen          mnSize;
 408
 409 public:
 410                         ImplMultiTextLineInfo();
 411                         ~ImplMultiTextLineInfo();
 412
 413     void                AddLine( ImplTextLineInfo* pLine );
 414     void                Clear();
 415
 416     ImplTextLineInfo*   GetLine( sal_uInt16 nLine ) const
 417                             { return mpLines[nLine]; }
 418     xub_StrLen          Count() const { return mnLines; }
 419
 420 private:
 421                             ImplMultiTextLineInfo( const ImplMultiTextLineInfo& );
 422     ImplMultiTextLineInfo&  operator=( const ImplMultiTextLineInfo& );
 423 };
 424
 425 #endif // _SV_OUTFONT_HXX
 426
 427 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */