bb06f51308
which means that some call sites have to change to use unicode string literals i.e. u"foo" instead of "foo" Change-Id: Ie51c3adf56d343dd1d1710777f9d2a43ee66221c Reviewed-on: https://gerrit.libreoffice.org/c/core/+/106125 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
127 lines
4.9 KiB
C++
127 lines
4.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_VCL_INC_FONTINSTANCE_HXX
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#define INCLUDED_VCL_INC_FONTINSTANCE_HXX
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#include "fontselect.hxx"
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#include "impfontmetricdata.hxx"
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#include <basegfx/polygon/b2dpolypolygon.hxx>
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#include <rtl/ref.hxx>
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#include <salhelper/simplereferenceobject.hxx>
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#include <tools/gen.hxx>
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#include <tools/fontenum.hxx>
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#include <tools/degree.hxx>
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#include <vcl/glyphitem.hxx>
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#include <optional>
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#include <unordered_map>
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#include <memory>
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#include <hb.h>
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class ConvertChar;
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class ImplFontCache;
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class PhysicalFontFace;
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// TODO: allow sharing of metrics for related fonts
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class VCL_PLUGIN_PUBLIC LogicalFontInstance : public salhelper::SimpleReferenceObject
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{
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// just declaring the factory function doesn't work AKA
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// friend LogicalFontInstance* PhysicalFontFace::CreateFontInstance(const FontSelectPattern&) const;
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friend class PhysicalFontFace;
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friend class ImplFontCache;
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public: // TODO: make data members private
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virtual ~LogicalFontInstance() override;
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ImplFontMetricDataRef mxFontMetric; // Font attributes
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const ConvertChar* mpConversion; // used e.g. for StarBats->StarSymbol
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tools::Long mnLineHeight;
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Degree10 mnOwnOrientation; // text angle if lower layers don't rotate text themselves
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Degree10 mnOrientation; // text angle in 3600 system
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bool mbInit; // true if maFontMetric member is valid
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void AddFallbackForUnicode( sal_UCS4, FontWeight eWeight, const OUString& rFontName );
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bool GetFallbackForUnicode( sal_UCS4, FontWeight eWeight, OUString* pFontName ) const;
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void IgnoreFallbackForUnicode( sal_UCS4, FontWeight eWeight, std::u16string_view rFontName );
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inline hb_font_t* GetHbFont();
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bool IsGraphiteFont();
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void SetAverageWidthFactor(double nFactor) { m_nAveWidthFactor = std::abs(nFactor); }
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double GetAverageWidthFactor() const { return m_nAveWidthFactor; }
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const FontSelectPattern& GetFontSelectPattern() const { return m_aFontSelData; }
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const PhysicalFontFace* GetFontFace() const { return m_pFontFace.get(); }
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PhysicalFontFace* GetFontFace() { return m_pFontFace.get(); }
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const ImplFontCache* GetFontCache() const { return mpFontCache; }
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bool GetGlyphBoundRect(sal_GlyphId, tools::Rectangle&, bool) const;
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virtual bool GetGlyphOutline(sal_GlyphId, basegfx::B2DPolyPolygon&, bool) const = 0;
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int GetKashidaWidth();
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void GetScale(double* nXScale, double* nYScale);
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static inline void DecodeOpenTypeTag(const uint32_t nTableTag, char* pTagName);
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protected:
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explicit LogicalFontInstance(const PhysicalFontFace&, const FontSelectPattern&);
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virtual bool ImplGetGlyphBoundRect(sal_GlyphId, tools::Rectangle&, bool) const = 0;
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// Takes ownership of pHbFace.
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static hb_font_t* InitHbFont(hb_face_t* pHbFace);
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virtual hb_font_t* ImplInitHbFont() { assert(false); return hb_font_get_empty(); }
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private:
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// cache of Unicode characters and replacement font names
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// TODO: a fallback map can be shared with many other ImplFontEntries
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// TODO: at least the ones which just differ in orientation, stretching or height
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typedef ::std::unordered_map< ::std::pair<sal_UCS4,FontWeight>, OUString > UnicodeFallbackList;
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std::unique_ptr<UnicodeFallbackList> mpUnicodeFallbackList;
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mutable ImplFontCache * mpFontCache;
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const FontSelectPattern m_aFontSelData;
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hb_font_t* m_pHbFont;
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double m_nAveWidthFactor;
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rtl::Reference<PhysicalFontFace> m_pFontFace;
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std::optional<bool> m_xbIsGraphiteFont;
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};
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inline hb_font_t* LogicalFontInstance::GetHbFont()
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{
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if (!m_pHbFont)
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m_pHbFont = ImplInitHbFont();
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return m_pHbFont;
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}
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inline void LogicalFontInstance::DecodeOpenTypeTag(const uint32_t nTableTag, char* pTagName)
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{
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pTagName[0] = static_cast<char>(nTableTag >> 24);
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pTagName[1] = static_cast<char>(nTableTag >> 16);
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pTagName[2] = static_cast<char>(nTableTag >> 8);
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pTagName[3] = static_cast<char>(nTableTag);
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pTagName[4] = 0;
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}
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#endif // INCLUDED_VCL_INC_FONTINSTANCE_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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