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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_SALLAYOUT_HXX
#define INCLUDED_VCL_INC_SALLAYOUT_HXX
#include <sal/config.h>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <tools/gen.hxx>
#include <tools/degree.hxx>
#include <i18nlangtag/languagetag.hxx>
#include <vcl/dllapi.h>
#include <vcl/devicecoordinate.hxx>
#include <vcl/vclenum.hxx> // for typedef sal_UCS4
#include <vcl/vcllayout.hxx>
#include "ImplLayoutRuns.hxx"
#include "impglyphitem.hxx"
#include <com/sun/star/i18n/XBreakIterator.hpp>
#include <hb.h>
#include <iostream>
#include <memory>
#include <vector>
#define MAX_FALLBACK 16
class GenericSalLayout;
class SalGraphics;
enum class SalLayoutFlags;
namespace vcl::font {
class PhysicalFontFace;
}
namespace vcl::text {
class TextLayoutCache;
}
class MultiSalLayout final : public SalLayout
{
public:
void DrawText(SalGraphics&) const override;
sal_Int32 GetTextBreak(DeviceCoordinate nMaxWidth, DeviceCoordinate nCharExtra, int nFactor) const override;
DeviceCoordinate FillDXArray(std::vector<DeviceCoordinate>* pDXArray, const OUString& rStr) const override;
void GetCaretPositions(int nArraySize, sal_Int32* pCaretXArray) const override;
bool GetNextGlyph(const GlyphItem** pGlyph, DevicePoint& rPos, int& nStart,
const LogicalFontInstance** ppGlyphFont = nullptr) const override;
bool GetOutline(basegfx::B2DPolyPolygonVector&) const override;
bool IsKashidaPosValid(int nCharPos, int nNextCharPos) const override;
SalLayoutGlyphs GetGlyphs() const final override;
// used only by OutputDevice::ImplLayout, TODO: make friend
explicit MultiSalLayout( std::unique_ptr<SalLayout> pBaseLayout );
void AddFallback(std::unique_ptr<SalLayout> pFallbackLayout, ImplLayoutRuns const &);
// give up ownership of the initial pBaseLayout taken by the ctor
std::unique_ptr<SalLayout> ReleaseBaseLayout();
bool LayoutText(vcl::text::ImplLayoutArgs&, const SalLayoutGlyphsImpl*) override;
void AdjustLayout(vcl::text::ImplLayoutArgs&) override;
void InitFont() const override;
void SetIncomplete(bool bIncomplete);
void ImplAdjustMultiLayout(vcl::text::ImplLayoutArgs& rArgs,
vcl::text::ImplLayoutArgs& rMultiArgs,
const double* pMultiDXArray);
virtual ~MultiSalLayout() override;
private:
MultiSalLayout( const MultiSalLayout& ) = delete;
MultiSalLayout& operator=( const MultiSalLayout& ) = delete;
std::unique_ptr<GenericSalLayout> mpLayouts[ MAX_FALLBACK ];
ImplLayoutRuns maFallbackRuns[ MAX_FALLBACK ];
int mnLevel;
bool mbIncomplete;
};
class VCL_DLLPUBLIC GenericSalLayout : public SalLayout
{
friend void MultiSalLayout::ImplAdjustMultiLayout(
vcl::text::ImplLayoutArgs& rArgs,
vcl::text::ImplLayoutArgs& rMultiArgs,
const double* pMultiDXArray);
public:
GenericSalLayout(LogicalFontInstance&);
~GenericSalLayout() override;
void AdjustLayout(vcl::text::ImplLayoutArgs&) final override;
bool LayoutText(vcl::text::ImplLayoutArgs&, const SalLayoutGlyphsImpl*) final override;
void DrawText(SalGraphics&) const final override;
SalLayoutGlyphs GetGlyphs() const final override;
bool IsKashidaPosValid(int nCharPos, int nNextCharPos) const final override;
// used by upper layers
DeviceCoordinate GetTextWidth() const final override;
DeviceCoordinate FillDXArray(std::vector<DeviceCoordinate>* pDXArray, const OUString& rStr) const final override;
sal_Int32 GetTextBreak(DeviceCoordinate nMaxWidth, DeviceCoordinate nCharExtra, int nFactor) const final override;
void GetCaretPositions(int nArraySize, sal_Int32* pCaretXArray) const final override;
// used by display layers
LogicalFontInstance& GetFont() const
{ return *m_GlyphItems.GetFont(); }
bool GetNextGlyph(const GlyphItem** pGlyph, DevicePoint& rPos, int& nStart,
const LogicalFontInstance** ppGlyphFont = nullptr) const override;
const SalLayoutGlyphsImpl& GlyphsImpl() const { return m_GlyphItems; }
private:
// for glyph+font+script fallback
void MoveGlyph(int nStart, double nNewXPos);
void DropGlyph(int nStart);
void Simplify(bool bIsBase);
GenericSalLayout( const GenericSalLayout& ) = delete;
GenericSalLayout& operator=( const GenericSalLayout& ) = delete;
void ApplyDXArray(const double*, const sal_Bool*);
void Justify(DeviceCoordinate nNewWidth);
void ApplyAsianKerning(std::u16string_view rStr);
void GetCharWidths(std::vector<DeviceCoordinate>& rCharWidths,
const OUString& rStr) const;
void SetNeedFallback(vcl::text::ImplLayoutArgs&, sal_Int32, bool);
bool HasVerticalAlternate(sal_UCS4 aChar, sal_UCS4 aNextChar);
void ParseFeatures(std::u16string_view name);
css::uno::Reference<css::i18n::XBreakIterator> mxBreak;
SalLayoutGlyphsImpl m_GlyphItems;
OString msLanguage;
std::vector<hb_feature_t> maFeatures;
hb_set_t* mpVertGlyphs;
const bool mbFuzzing;
};
#endif // INCLUDED_VCL_INC_SALLAYOUT_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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