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path: root/vcl/inc/cairotextrender.hxx
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */

#ifndef INCLUDED_VCL_INC_UNX_CAIROTEXTRENDER_HXX
#define INCLUDED_VCL_INC_UNX_CAIROTEXTRENDER_HXX

#include "textrender.hxx"
#include <vcl/region.hxx>
#include <deque>

typedef struct FT_FaceRec_* FT_Face;

class PspSalPrinter;
class PspSalInfoPrinter;
class ServerFont;
class GlyphCache;
class ImplLayoutArgs;
class ServerFontLayout;
class PhysicalFontCollection;
class PhysicalFontFace;
struct _cairo_surface_t;
typedef struct _cairo_surface cairo_surface_t;
typedef struct _cairo cairo_t;

class CairoFontsCache
{
public:
    struct CacheId
    {
        FT_Face maFace;
        const void *mpOptions;
        bool mbEmbolden;
        bool mbVerticalMetrics;
        bool operator ==(const CacheId& rOther) const
        {
            return maFace == rOther.maFace &&
                mpOptions == rOther.mpOptions &&
                mbEmbolden == rOther.mbEmbolden &&
                mbVerticalMetrics == rOther.mbVerticalMetrics;
        }
    };
private:
    static int mnRefCount;
    typedef std::deque< std::pair<void *, CacheId> > LRUFonts;
    static LRUFonts maLRUFonts;
public:
    CairoFontsCache();
    static void  CacheFont(void *pFont, const CacheId &rId);
    static void* FindCachedFont(const CacheId &rId);
    ~CairoFontsCache();
};

class CairoTextRender : public TextRenderImpl
{
    bool mbPrinter;
    ServerFont* mpServerFont[ MAX_FALLBACK ];

    SalColor nTextColor_;
    CairoFontsCache m_aCairoFontsCache;

protected:
    virtual GlyphCache& getPlatformGlyphCache() = 0;
    virtual cairo_surface_t* getCairoSurface() = 0;
    virtual void getSurfaceOffset(double& nDX, double& nDY) = 0;
    virtual void drawSurface(cairo_t* cr) = 0;

bool setFont( const FontSelectPattern *pEntry, int nFallbackLevel );

    virtual void clipRegion(cairo_t* cr) = 0;

public:
    CairoTextRender(bool bPrinter);


    virtual void            SetTextColor( SalColor nSalColor ) SAL_OVERRIDE;
    virtual sal_uInt16          SetFont( FontSelectPattern*, int nFallbackLevel ) SAL_OVERRIDE;
    virtual void            GetFontMetric( ImplFontMetricData*, int nFallbackLevel ) SAL_OVERRIDE;
    virtual const FontCharMapPtr GetFontCharMap() const SAL_OVERRIDE;
    virtual bool GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const SAL_OVERRIDE;
    virtual void            GetDevFontList( PhysicalFontCollection* ) SAL_OVERRIDE;
    virtual void ClearDevFontCache() SAL_OVERRIDE;
    virtual bool            AddTempDevFont( PhysicalFontCollection*, const OUString& rFileURL, const OUString& rFontName ) SAL_OVERRIDE;
    virtual bool            CreateFontSubset( const OUString& rToFile,
                                              const PhysicalFontFace*,
                                              sal_GlyphId* pGlyphIDs,
                                              sal_uInt8* pEncoding,
                                              sal_Int32* pWidths,
                                              int nGlyphs,
                                              FontSubsetInfo& rInfo
                                              ) SAL_OVERRIDE;
    virtual const Ucs2SIntMap* GetFontEncodingVector( const PhysicalFontFace*, const Ucs2OStrMap** ppNonEncoded, std::set<sal_Unicode> const**) SAL_OVERRIDE;
    virtual const void* GetEmbedFontData( const PhysicalFontFace*,
                                          const sal_Ucs* pUnicodes,
                                          sal_Int32* pWidths,
                                          FontSubsetInfo& rInfo,
                                          long* pDataLen ) SAL_OVERRIDE;
    virtual void            FreeEmbedFontData( const void* pData, long nDataLen ) SAL_OVERRIDE;
    virtual void            GetGlyphWidths( const PhysicalFontFace*,
                                            bool bVertical,
                                            Int32Vector& rWidths,
                                            Ucs2UIntMap& rUnicodeEnc ) SAL_OVERRIDE;
    virtual bool            GetGlyphBoundRect( sal_GlyphId nIndex, Rectangle& ) SAL_OVERRIDE;
    virtual bool            GetGlyphOutline( sal_GlyphId nIndex, ::basegfx::B2DPolyPolygon& ) SAL_OVERRIDE;
    virtual SalLayout*      GetTextLayout( ImplLayoutArgs&, int nFallbackLevel ) SAL_OVERRIDE;
    virtual void            DrawServerFontLayout( const ServerFontLayout& ) SAL_OVERRIDE;
    virtual SystemFontData  GetSysFontData( int nFallbackLevel ) const SAL_OVERRIDE;

private:
    bool            bDisableGraphite_;
};

#endif

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */