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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 override;
+ void GetCaretPositions(int nArraySize, sal_Int32* pCaretXArray) const override;
+ bool GetNextGlyph(const GlyphItem** pGlyph, DevicePoint& rPos, int& nStart,
+ const LogicalFontInstance** ppGlyphFont = nullptr,
+ const vcl::font::PhysicalFontFace** pFallbackFont = nullptr) const override;
+ bool GetOutline(basegfx::B2DPolyPolygonVector&) const override;
+ bool IsKashidaPosValid(int nCharPos) 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);
+
+ template<typename DC>
+ void ImplAdjustMultiLayout(vcl::text::ImplLayoutArgs& rArgs,
+ vcl::text::ImplLayoutArgs& rMultiArgs,
+ const DC* 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
+{
+ template<typename DC> friend void MultiSalLayout::ImplAdjustMultiLayout(
+ vcl::text::ImplLayoutArgs& rArgs,
+ vcl::text::ImplLayoutArgs& rMultiArgs,
+ const DC* 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) const final override;
+
+ // used by upper layers
+ DeviceCoordinate GetTextWidth() const final override;
+ DeviceCoordinate FillDXArray(std::vector<DeviceCoordinate>* pDXArray) 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 vcl::font::PhysicalFontFace** pFallbackFont = 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;
+
+ template<typename DC>
+ void ApplyDXArray(const DC*, SalLayoutFlags nLayoutFlags);
+ void Justify(DeviceCoordinate nNewWidth);
+ void ApplyAsianKerning(const OUString& rStr);
+
+ void GetCharWidths(std::vector<DeviceCoordinate>& rCharWidths) 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;
+};
+
+#undef SalGraphics
+
+#endif // INCLUDED_VCL_INC_SALLAYOUT_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */