textrender.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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
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 */
 
#pragma once
 
#include <sal/config.h>
 
#include "salgdi.hxx"
 
class ImplFontMetricData;
class PhysicalFontCollection;
namespace vcl::font { class PhysicalFontFace; }
 
class TextRenderImpl
{
public:
    // can't call ReleaseFonts here, as the destructor just calls this classes SetFont (pure virtual)!
    virtual ~TextRenderImpl() {}
 
    virtual void                    SetTextColor( Color nColor ) = 0;
    virtual void                    SetFont(LogicalFontInstance*, int nFallbackLevel) = 0;
    void ReleaseFonts() { SetFont(nullptr, 0); }
    virtual void                    GetFontMetric( ImplFontMetricDataRef&, int nFallbackLevel ) = 0;
    virtual FontCharMapRef          GetFontCharMap() const = 0;
    virtual bool                    GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const = 0;
    virtual void                    GetDevFontList( vcl::font::PhysicalFontCollection* ) = 0;
    virtual void                    ClearDevFontCache() = 0;
    virtual bool                    AddTempDevFont( vcl::font::PhysicalFontCollection*, const OUString& rFileURL, const OUString& rFontName ) = 0;
    virtual bool                    CreateFontSubset(
                                        const OUString& rToFile,
                                        const vcl::font::PhysicalFontFace*,
                                        const sal_GlyphId* pGlyphIDs,
                                        const sal_uInt8* pEncoding,
                                        sal_Int32* pWidths,
                                        int nGlyphs,
                                        FontSubsetInfo& rInfo) = 0;
 
    virtual const void*             GetEmbedFontData(const vcl::font::PhysicalFontFace*, tools::Long* pDataLen) = 0;
    virtual void                    FreeEmbedFontData( const void* pData, tools::Long nDataLen ) = 0;
    virtual void                    GetGlyphWidths(
                                        const vcl::font::PhysicalFontFace*,
                                        bool bVertical,
                                        std::vector< sal_Int32 >& rWidths,
                                        Ucs2UIntMap& rUnicodeEnc ) = 0;
 
    virtual std::unique_ptr<GenericSalLayout>
                                    GetTextLayout(int nFallbackLevel) = 0;
    virtual void                    DrawTextLayout(const GenericSalLayout&, const SalGraphics&) = 0;
};
 
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