vcl/inc/cairotextrender.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  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 INCLUDED_VCL_INC_UNX_CAIROTEXTRENDER_HXX
  21 #define INCLUDED_VCL_INC_UNX_CAIROTEXTRENDER_HXX
  22
  23 #include "textrender.hxx"
  24 #include <vcl/region.hxx>
  25 #include <deque>
  26
  27 typedef struct FT_FaceRec_* FT_Face;
  28
  29 class PspSalPrinter;
  30 class PspSalInfoPrinter;
  31 class ServerFont;
  32 class GlyphCache;
  33 class ImplLayoutArgs;
  34 class ServerFontLayout;
  35 class PhysicalFontCollection;
  36 class PhysicalFontFace;
  37 typedef struct _cairo cairo_t;
  38
  39 class VCL_DLLPUBLIC CairoFontsCache
  40 {
  41 public:
  42     struct CacheId
  43     {
  44         FT_Face maFace;
  45         const void *mpOptions;
  46         bool mbEmbolden;
  47         bool mbVerticalMetrics;
  48         bool operator ==(const CacheId& rOther) const
  49         {
  50             return maFace == rOther.maFace &&
  51                 mpOptions == rOther.mpOptions &&
  52                 mbEmbolden == rOther.mbEmbolden &&
  53                 mbVerticalMetrics == rOther.mbVerticalMetrics;
  54         }
  55     };
  56
  57 private:
  58     static int      mnRefCount;
  59     typedef         std::deque< std::pair<void *, CacheId> > LRUFonts;
  60     static LRUFonts maLRUFonts;
  61 public:
  62                                 CairoFontsCache();
  63                                 ~CairoFontsCache();
  64
  65     static void                 CacheFont(void *pFont, const CacheId &rId);
  66     static void*                FindCachedFont(const CacheId &rId);
  67 };
  68
  69 class VCL_DLLPUBLIC CairoTextRender : public TextRenderImpl
  70 {
  71     ServerFont*     mpServerFont[ MAX_FALLBACK ];
  72
  73     SalColor        mnTextColor;
  74     CairoFontsCache m_aCairoFontsCache;
  75
  76     bool            bDisableGraphite_;
  77
  78 protected:
  79     virtual GlyphCache&         getPlatformGlyphCache() = 0;
  80     virtual cairo_t*            getCairoContext() = 0;
  81     virtual void                getSurfaceOffset(double& nDX, double& nDY) = 0;
  82     virtual void                drawSurface(cairo_t* cr) = 0;
  83
  84     bool                        setFont( const FontSelectPattern *pEntry, int nFallbackLevel );
  85
  86     virtual void                clipRegion(cairo_t* cr) = 0;
  87
  88 public:
  89                                 CairoTextRender();
  90
  91
  92     virtual void                SetTextColor( SalColor nSalColor ) SAL_OVERRIDE;
  93     virtual sal_uInt16          SetFont( FontSelectPattern*, int nFallbackLevel ) SAL_OVERRIDE;
  94     virtual void                GetFontMetric( ImplFontMetricData*, int nFallbackLevel ) SAL_OVERRIDE;
  95     virtual const FontCharMapPtr GetFontCharMap() const SAL_OVERRIDE;
  96     virtual bool                GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const SAL_OVERRIDE;
  97     virtual void                GetDevFontList( PhysicalFontCollection* ) SAL_OVERRIDE;
  98     virtual void                ClearDevFontCache() SAL_OVERRIDE;
  99     virtual bool                AddTempDevFont( PhysicalFontCollection*, const OUString& rFileURL, const OUString& rFontName ) SAL_OVERRIDE;
 100     virtual bool                CreateFontSubset(
 101                                     const OUString& rToFile,
 102                                     const PhysicalFontFace*,
 103                                     const sal_GlyphId* pGlyphIDs,
 104                                     const sal_uInt8* pEncoding,
 105                                     sal_Int32* pWidths,
 106                                     int nGlyphs,
 107                                     FontSubsetInfo& rInfo) SAL_OVERRIDE;
 108
 109     virtual const Ucs2SIntMap*  GetFontEncodingVector( const PhysicalFontFace*, const Ucs2OStrMap** ppNonEncoded, std::set<sal_Unicode> const**) SAL_OVERRIDE;
 110     virtual const void*         GetEmbedFontData(
 111                                     const PhysicalFontFace*,
 112                                     const sal_Ucs* pUnicodes,
 113                                     sal_Int32* pWidths,
 114                                     size_t nLen,
 115                                     FontSubsetInfo& rInfo,
 116                                     long* pDataLen ) SAL_OVERRIDE;
 117
 118     virtual void                FreeEmbedFontData( const void* pData, long nDataLen ) SAL_OVERRIDE;
 119     virtual void                GetGlyphWidths(
 120                                     const PhysicalFontFace*,
 121                                     bool bVertical,
 122                                     Int32Vector& rWidths,
 123                                     Ucs2UIntMap& rUnicodeEnc ) SAL_OVERRIDE;
 124
 125     virtual bool                GetGlyphBoundRect( sal_GlyphId nIndex, Rectangle& ) SAL_OVERRIDE;
 126     virtual bool                GetGlyphOutline( sal_GlyphId nIndex, ::basegfx::B2DPolyPolygon& ) SAL_OVERRIDE;
 127     virtual SalLayout*          GetTextLayout( ImplLayoutArgs&, int nFallbackLevel ) SAL_OVERRIDE;
 128     virtual void                DrawServerFontLayout( const ServerFontLayout& ) SAL_OVERRIDE;
 129     virtual SystemFontData      GetSysFontData( int nFallbackLevel ) const SAL_OVERRIDE;
 130 };
 131
 132 #endif
 133
 134 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */