/* -*- 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_SVX_SOURCE_SVDRAW_SVDPDF_HXX

#define INCLUDED_SVX_SOURCE_SVDRAW_SVDPDF_HXX

#include <sal/config.h>

#include <memory>

#include <map>

#include <tools/fract.hxx>

#include <vcl/virdev.hxx>

#include <vcl/gfxlink.hxx>

#include <vcl/graph.hxx>

#include <svx/svdobj.hxx>

#include <svx/xdash.hxx>

#include <basegfx/matrix/b2dhommatrix.hxx>

#include <basegfx/vector/b2dsize.hxx>

#include <vcl/filter/PDFiumLibrary.hxx>

// Forward Declarations

class SfxItemSet;

class SdrObjList;

class SdrModel;

class SdrObject;

class SvdProgressInfo;

// Fonts are typically saved in pdf files as multiple subsets.

// This describes a single font subset:

struct FontSubSet

{

    // The location of a file containing the dumped info about the font

    OUString cidFontInfoUrl;

    // The location of a 'mergefile' derived from glyphToChars/charsToGlyph

    // that indicates what positions the glyphs of this font should go in

    // a final font merged from multiple subsets

    OUString toMergedMapUrl;

    // The location of the extracted font, converted to a cid font.

    OUString pfaCIDUrl;

    // What glyphs are in the subset and what characters those represent.

    std::map<sal_Int32, OString> glyphToChars;

    std::map<OString, sal_Int32> charsToGlyph;

    // What glyphs ranges are in the subset

    std::map<sal_Int32, Range> glyphRangesToChars;

    int nGlyphCount;

};

// The collection of all font subsets in the document.

struct SubSetInfo

{

    std::vector<FontSubSet> aComponents;

};

// Describes a final, possibly merged from multiple input fontsubsets,

// font of a given name and fontweight available as fontfile

struct EmbeddedFontInfo

{

    OUString sFontName;

    OUString sFontFile;

    FontWeight eFontWeight;

};

// Helper Class to import PDF

class ImpSdrPdfImport final

{

    std::vector<rtl::Reference<SdrObject>> maTmpList;

    ScopedVclPtr<VirtualDevice> mpVD;

    tools::Rectangle maScaleRect;

    size_t mnMapScalingOfs; // from here on, not edited with MapScaling

    std::unique_ptr<SfxItemSet> mpLineAttr;

    std::unique_ptr<SfxItemSet> mpFillAttr;

    std::unique_ptr<SfxItemSet> mpTextAttr;

    SdrModel* mpModel;

    std::shared_ptr<ImportedFontMap> mxImportedFonts;

    SdrLayerID mnLayer;

    sal_Int32 mnLineWidth;

    static constexpr css::drawing::LineCap gaLineCap = css::drawing::LineCap_BUTT;

    XDash maDash;

    std::optional<Color> moFillColor;

    std::optional<Bitmap> moFillPattern;

    bool mbMov;

    bool mbSize;

    Point maOfs;

    double mfScaleX;

    double mfScaleY;

    Fraction maScaleX;

    Fraction maScaleY;

    bool mbFntDirty;

    // to optimize (PenNULL,Brush,DrawPoly),(Pen,BrushNULL,DrawPoly) -> two-in-one

    bool mbLastObjWasPolyWithoutLine;

    bool mbNoLine;

    bool mbNoFill;

    std::unique_ptr<vcl::pdf::PDFiumDocument> mpPdfDocument;

    int mnPageCount;

    double mdPageHeightPts;

    /// The current transformation matrix, typically used with Form objects.

    basegfx::B2DHomMatrix maCurrentMatrix;

    /// Correct the vertical coordinate to start at the top.

    /// PDF coordinate system has origin at the bottom right.

    double correctVertOrigin(double offsetPts) const { return mdPageHeightPts - offsetPts; }

    /// Convert PDF points to logic (twips).

    tools::Rectangle PointsToLogic(double left, double right, double top, double bottom) const;

    Point PointsToLogic(double x, double y) const;

    std::shared_ptr<vcl::pdf::PDFium> mpPDFium;

    Color getStrokeColor(std::unique_ptr<vcl::pdf::PDFiumPageObject> const& pPageObject,

                         std::unique_ptr<vcl::pdf::PDFiumPage> const& pPage);

    Color getFillColor(std::unique_ptr<vcl::pdf::PDFiumPageObject> const& pPageObject,

                       std::unique_ptr<vcl::pdf::PDFiumPage> const& pPage);

    void ImportPdfObject(std::unique_ptr<vcl::pdf::PDFiumPageObject> const& pPageObject,

                         std::unique_ptr<vcl::pdf::PDFiumPage> const& pPage,

                         std::unique_ptr<vcl::pdf::PDFiumTextPage> const& pTextPage,

                         int nPageObjectIndex);

    void ImportForm(std::unique_ptr<vcl::pdf::PDFiumPageObject> const& pPageObject,

                    std::unique_ptr<vcl::pdf::PDFiumPage> const& pPage,

                    std::unique_ptr<vcl::pdf::PDFiumTextPage> const& pTextPage,

                    int nPageObjectIndex);

    void ImportImage(std::unique_ptr<vcl::pdf::PDFiumPageObject> const& pPageObject,

                     int nPageObjectIndex);

    void ImportPath(std::unique_ptr<vcl::pdf::PDFiumPageObject> const& pPageObject,

                    std::unique_ptr<vcl::pdf::PDFiumPage> const& pPage, int nPageObjectIndex);

    void ImportText(std::unique_ptr<vcl::pdf::PDFiumPageObject> const& pPageObject,

                    std::unique_ptr<vcl::pdf::PDFiumPage> const& pPage,

                    std::unique_ptr<vcl::pdf::PDFiumTextPage> const& pTextPage,

                    int nPageObjectIndex);

    void InsertTextObject(const Point& rPos, const Size& rSize, const OUString& rStr,

                          bool bInvisible);

    void SetupPageScale(const double dPageWidth, const double dPageHeight);

    void SetAttributes(SdrObject* pObj, bool bForceTextAttr = false);

    void InsertObj(SdrObject* pObj, bool bScale = true);

    void MapScaling();

    void appendSegmentsToPolyPoly(

        basegfx::B2DPolyPolygon& rPolyPoly,

        const std::vector<std::unique_ptr<vcl::pdf::PDFiumPathSegment>>& rPathSegments,

        const basegfx::B2DHomMatrix& rPathMatrix);

    basegfx::B2DPolyPolygon GetClip(const std::unique_ptr<vcl::pdf::PDFiumClipPath>& rClipPath,

                                    const basegfx::B2DHomMatrix& rPathMatrix,

                                    const basegfx::B2DHomMatrix& rTransform);

    // #i73407# reformulation to use new B2DPolygon classes

    bool CheckLastPolyLineAndFillMerge(const basegfx::B2DPolyPolygon& rPolyPolygon);

    void DoObjects(SvdProgressInfo* pProgrInfo, sal_uInt32* pActionsToReport, int nPageIndex);

    static ImportedFontMap CollectFonts(sal_Int64 nPrefix, vcl::pdf::PDFiumDocument& rPdfDocument);

    sal_Int64 getPrefix() const { return reinterpret_cast<sal_Int64>(this); }

    static EmbeddedFontInfo convertToOTF(sal_Int64 nPrefix, SubSetInfo& rSubSetInfo,

                                         const OUString& fileUrl, const OUString& fontName,

                                         const OUString& baseFontName,

                                         std::u16string_view fontFileName,

                                         const std::vector<uint8_t>& toUnicodeData,

                                         const vcl::pdf::PDFiumFont& font);

    // Copy assignment is forbidden and not implemented.

    ImpSdrPdfImport(const ImpSdrPdfImport&) = delete;

    ImpSdrPdfImport& operator=(const ImpSdrPdfImport&) = delete;

public:

    ImpSdrPdfImport(SdrModel& rModel, SdrLayerID nLay, const tools::Rectangle& rRect,

                    Graphic const& rGraphic);

    ~ImpSdrPdfImport();

    int GetPageCount() const { return mnPageCount; }

    size_t DoImport(SdrObjList& rDestList, size_t nInsPos, int nPageNumber,

                    SvdProgressInfo* pProgrInfo = nullptr);

};

#endif // INCLUDED_SVX_SOURCE_SVDRAW_SVDPDF_HXX

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