pdfwriter.hxx

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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_PDFWRITER_HXX
#define INCLUDED_VCL_PDFWRITER_HXX

#include <config_options.h>
#include <sal/types.h>

#include <tools/gen.hxx>
#include <tools/color.hxx>
#include <rtl/strbuf.hxx>

#include <vcl/dllapi.h>
#include <vcl/font.hxx>
#include <vcl/outdev.hxx>
#include <vcl/graph.hxx>

#include <com/sun/star/lang/Locale.hpp>

#include <memory>
#include <vector>
#include <set>

namespace com { namespace sun { namespace star { namespace beans { class XMaterialHolder; } } } }
namespace com { namespace sun { namespace star { namespace io { class XOutputStream; } } } }
namespace com { namespace sun { namespace star { namespace security { class XCertificate; } } } }

class GDIMetaFile;
class MapMode;
class LineInfo;
namespace tools {
    class Polygon;
    class PolyPolygon;
}
class Bitmap;
class BitmapEx;
class Gradient;
class Hatch;
class Wallpaper;

namespace vcl
{

class PDFExtOutDevData;
class PDFWriterImpl;

struct PDFNote
{
    OUString          Title;          // optional title for the popup containing the note
    OUString          Contents;       // contents of the note
};

class VCL_DLLPUBLIC PDFOutputStream
{
    public:
    virtual ~PDFOutputStream();
    virtual void write( const css::uno::Reference< css::io::XOutputStream >& xStream ) = 0;
};

class VCL_DLLPUBLIC PDFWriter
{
    ScopedVclPtr<PDFWriterImpl> xImplementation;

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

public:
    // extended line info
    enum CapType { capButt, capRound, capSquare };
    enum JoinType { joinMiter, joinRound, joinBevel };
    struct ExtLineInfo
    {
        double                      m_fLineWidth;
        double                      m_fTransparency;
        CapType                     m_eCap;
        JoinType                    m_eJoin;
        double                      m_fMiterLimit;
        std::vector< double >       m_aDashArray;

        ExtLineInfo() : m_fLineWidth( 0.0 ),
                        m_fTransparency( 0.0 ),
                        m_eCap( capButt ),
                        m_eJoin( joinMiter ),
                        m_fMiterLimit( 10.0 )
        {}
    };

    enum class Orientation { Portrait, Inherit };

    // in case the below enum is added PDF_1_6 PDF_1_7, please add them just after PDF_1_5
    enum class PDFVersion { PDF_1_2, PDF_1_3, PDF_1_4, PDF_1_5, PDF_1_6, PDF_A_1, PDF_A_2, PDF_A_3 };//i59651, PDF/A-1b & -1a, only -1b implemented for now
    // for the meaning of DestAreaType please look at PDF Reference Manual
    // version 1.4 section 8.2.1, page 475
    enum class DestAreaType { XYZ, FitRectangle };

    // for a definition of structural element types please refer to
    // PDF Reference, 3rd ed. section 9.7.4
    enum StructElement
    {
        // special element to place outside the structure hierarchy
        NonStructElement,
        // Grouping elements
        Document, Part, Article, Section, Division, BlockQuote,
        Caption, TOC, TOCI, Index,

        // block level elements
        Paragraph, Heading, H1, H2, H3, H4, H5, H6,
        List, ListItem, LILabel, LIBody,
        Table, TableRow, TableHeader, TableData,

        // inline level elements
        Span, Quote, Note, Reference, BibEntry, Code, Link,

        // illustration elements
        Figure, Formula, Form
    };

    enum StructAttribute
    {
        Placement, WritingMode, SpaceBefore, SpaceAfter, StartIndent, EndIndent,
        TextIndent, TextAlign, Width, Height, BlockAlign, InlineAlign,
        LineHeight, BaselineShift, TextDecorationType, ListNumbering,
        RowSpan, ColSpan,

        // link destination is an artificial attribute that sets
        // the link annotation ID of a Link element
        // further note: since structure attributes can only be
        // set during content creation, but links can be
        // created after the fact, it is possible to set
        // an arbitrary id as structure attribute here. In this
        // case the arbitrary id has to be passed again when the
        // actual link annotation is created via SetLinkPropertyID
        LinkAnnotation,
        // Language currently sets a LanguageType (see i18nlangtag/lang.h)
        // which will be internally changed to a corresponding locale
        Language
    };

    enum StructAttributeValue
    {
        Invalid,
        NONE,
        // Placement
        Block, Inline, Before, After, Start, End,
        // WritingMode
        LrTb, RlTb, TbRl,
        // TextAlign
        Center, Justify,
        // Width, Height,
        Auto,
        // BlockAlign
        Middle,
        // LineHeight
        Normal,
        // TextDecorationType
        Underline, Overline, LineThrough,
        // ListNumbering
        Disc, Circle, Square, Decimal, UpperRoman, LowerRoman, UpperAlpha, LowerAlpha
    };

    enum class PageTransition
    {
        Regular,
        SplitHorizontalInward, SplitHorizontalOutward,
        SplitVerticalInward, SplitVerticalOutward,
        BlindsHorizontal, BlindsVertical,
        BoxInward, BoxOutward,
        WipeLeftToRight, WipeBottomToTop, WipeRightToLeft, WipeTopToBottom,
        Dissolve
    };

    enum WidgetType
    {
        PushButton, RadioButton, CheckBox, Edit, ListBox, ComboBox, Hierarchy,
        Signature
    };

    enum ErrorCode
    {
        // transparent object occurred and was draw opaque because
        // PDF/A does not allow transparency
        Warning_Transparency_Omitted_PDFA,

        // transparent object occurred but is only supported since
        // PDF 1.4
        Warning_Transparency_Omitted_PDF13,

        // a form action was exported that is not suitable for PDF/A
        // the action was skipped
        Warning_FormAction_Omitted_PDFA,

        // transparent objects were converted to a bitmap in order
        // to removetransparencies from the output
        Warning_Transparency_Converted,

        // signature generation failed
        Error_Signature_Failed,
    };

    struct UNLESS_MERGELIBS(VCL_DLLPUBLIC) AnyWidget
    {
        WidgetType          Type;       // primitive RTTI
    public:
        OUString            Name;       // a distinct name to identify the control
        OUString            Description;// descriptive text for the control (e.g. for tool tip)
        OUString            Text;       // user text to appear on the control
        DrawTextFlags       TextStyle;  // style flags
        bool                ReadOnly;
        tools::Rectangle           Location;   // describes the area filled by the control
        bool                Border;     // true: widget should have a border, false: no border
        Color               BorderColor;// COL_TRANSPARENT and Border=true means get color from application settings
        bool                Background; // true: widget shall draw its background, false: no background
        Color               BackgroundColor; // COL_TRANSPARENT and Background=true means get color from application settings
        vcl::Font           TextFont;   // an empty font will be replaced by the
                                        // appropriate font from the user settings
        Color               TextColor;  // COL_TRANSPARENT will be replaced by the appropriate color from application settings
        sal_Int32           TabOrder; // lowest number is first in tab order

        /* style flags for text are those for OutputDevice::DrawText
           allowed values are:
           DrawTextFlags::Left, DrawTextFlags::Center, DrawTextFlags::Right, DrawTextFlags::Top,
           DrawTextFlags::VCenter, DrawTextFlags::Bottom,
           DrawTextFlags::MultiLine, DrawTextFlags::WordBreak

           if TextStyle is 0, then each control will fill in default values
         */

         // note: the Name member comprises the field name of the resulting
         // PDF field names need to be globally unique. Therefore if any
         // Widget with an already used name is created, the name will be
         // made unique by adding an underscore ('_') and an ascending number
         // to the name.

        AnyWidget( WidgetType eType ) :
                Type( eType ),
                TextStyle( DrawTextFlags::NONE ),
                ReadOnly( false ),
                Border( false ),
                BorderColor( COL_TRANSPARENT ),
                Background( false ),
                BackgroundColor( COL_TRANSPARENT ),
                TextColor( COL_TRANSPARENT ),
                TabOrder( -1 )
        {}
        virtual ~AnyWidget();

        WidgetType getType() const { return Type; }

        virtual std::unique_ptr<AnyWidget> Clone() const = 0;

    protected:
        // note that this equals the default compiler-generated copy-ctor, but we want to have it
        // protected, to only allow sub classes to access it
        AnyWidget( const AnyWidget& rSource )
            :Type( rSource.Type )
            ,Name( rSource.Name )
            ,Description( rSource.Description )
            ,Text( rSource.Text )
            ,TextStyle( rSource.TextStyle )
            ,ReadOnly( rSource.ReadOnly )
            ,Location( rSource.Location )
            ,Border( rSource.Border )
            ,BorderColor( rSource.BorderColor )
            ,Background( rSource.Background )
            ,BackgroundColor( rSource.BackgroundColor )
            ,TextFont( rSource.TextFont )
            ,TextColor( rSource.TextColor )
            ,TabOrder( rSource.TabOrder )
        {
        }
        AnyWidget& operator=( const AnyWidget& );  // never implemented
    };

    struct PushButtonWidget final : public AnyWidget
    {
        /* If Dest is set to a valid link destination,
           Then pressing the button will act as a goto
           action within the document.

           Else:
           An empty URL means this button will reset the form.

           If URL is not empty and Submit is set, then the URL
           contained will be set as the URL to submit the
           form to. In this case the submit method will be
           either GET if SubmitGet is true or POST if
           SubmitGet is false.

           If URL is not empty and Submit is clear, then
           the URL contained will be interpreted as a
           hyperlink to be executed on pushing the button.

           There will be no error checking or any kind of
           conversion done to the URL parameter execept this:
           it will be output as 7bit Ascii. The URL
           will appear literally in the PDF file produced
        */
        sal_Int32           Dest;
        OUString       URL;
        bool                Submit;
        bool                SubmitGet;

        PushButtonWidget()
                : AnyWidget( vcl::PDFWriter::PushButton ),
                  Dest( -1 ), Submit( false ), SubmitGet( false )
        {}

        virtual std::unique_ptr<AnyWidget> Clone() const override
        {
            return std::unique_ptr<AnyWidget>(new PushButtonWidget( *this ));
        }
    };

    struct CheckBoxWidget final : public AnyWidget
    {
        bool                Checked;

        CheckBoxWidget()
                : AnyWidget( vcl::PDFWriter::CheckBox ),
                  Checked( false )
        {}

        virtual std::unique_ptr<AnyWidget> Clone() const override
        {
            return std::unique_ptr<AnyWidget>(new CheckBoxWidget( *this ));
        }
    };

    struct RadioButtonWidget final : public AnyWidget
    {
        bool                Selected;
        sal_Int32           RadioGroup;
        OUString       OnValue; // the value of the radio button if it is selected

        RadioButtonWidget()
                : AnyWidget( vcl::PDFWriter::RadioButton ),
                  Selected( false ),
                  RadioGroup( 0 )
        {}

        virtual std::unique_ptr<AnyWidget> Clone() const override
        {
            return std::unique_ptr<AnyWidget>(new RadioButtonWidget( *this ));
        }
        // radio buttons having the same RadioGroup id comprise one
        // logical radio button group, that is at most one of the RadioButtons
        // in a group can be checked at any time
        //
        // note: a PDF radio button field consists of a named field
        // containing unnamed checkbox child fields. The name of the
        // radio button field is taken from the first RadioButtonWidget created
        // in the group
    };

    struct EditWidget final : public AnyWidget
    {
        bool                MultiLine;  // whether multiple lines are allowed
        bool                Password;   // visible echo off
        bool                FileSelect; // field is a file selector
        sal_Int32           MaxLen;     // maximum field length in characters, 0 means unlimited

        EditWidget()
                : AnyWidget( vcl::PDFWriter::Edit ),
                  MultiLine( false ),
                  Password( false ),
                  FileSelect( false ),
                  MaxLen( 0 )
        {}

        virtual std::unique_ptr<AnyWidget> Clone() const override
        {
            return std::unique_ptr<AnyWidget>(new EditWidget( *this ));
        }
    };

    struct ListBoxWidget final : public AnyWidget
    {
        bool                            DropDown;
        bool                            MultiSelect;
        std::vector<OUString>      Entries;
        std::vector<sal_Int32>          SelectedEntries;
         // if MultiSelect is false only the first entry of SelectedEntries
         // will be taken into account. the same is implicit for PDF < 1.4
         // since multiselect is a 1.4+ feature

        ListBoxWidget()
                : AnyWidget( vcl::PDFWriter::ListBox ),
                  DropDown( false ),
                  MultiSelect( false )
        {}

        virtual std::unique_ptr<AnyWidget> Clone() const override
        {
            return std::unique_ptr<AnyWidget>(new ListBoxWidget( *this ));
        }
    };

    // note: PDF only supports dropdown comboboxes
    struct ComboBoxWidget final : public AnyWidget
    {
        std::vector<OUString>      Entries;
        // set the current value in AnyWidget::Text

        ComboBoxWidget()
                : AnyWidget( vcl::PDFWriter::ComboBox )
        {}

        virtual std::unique_ptr<AnyWidget> Clone() const override
        {
            return std::unique_ptr<AnyWidget>(new ComboBoxWidget( *this ));
        }
    };

    struct SignatureWidget final : public AnyWidget
    {
        SignatureWidget()
                : AnyWidget( vcl::PDFWriter::Signature )
        {}

        virtual std::unique_ptr<AnyWidget> Clone() const override
        {
            return std::unique_ptr<AnyWidget>(new SignatureWidget( *this ));
        }
    };

    enum ExportDataFormat { HTML, XML, FDF, PDF };
// see 3.6.1 of PDF 1.4 ref for details, used for 8.1 PDF v 1.4 ref also
// These emuns are treated as integer while reading/writing to configuration
    enum PDFViewerPageMode
    {
        ModeDefault,
        UseOutlines,
        UseThumbs
    };
// These emuns are treated as integer while reading/writing to configuration
    enum PDFViewerAction
    {
        ActionDefault,
        FitInWindow,
        FitWidth,
        FitVisible,
        ActionZoom
    };
// These enums are treated as integer while reading/writing to configuration
    enum PDFPageLayout
    {
        DefaultLayout,
        SinglePage,
        Continuous,
        ContinuousFacing
    };

    // These emuns are treated as integer while reading/writing to configuration
    //what default action to generate in a PDF hyperlink to external document/site
    enum PDFLinkDefaultAction
    {
        URIAction,
        URIActionDestination,
        LaunchAction
    };

/*
The following structure describes the permissions used in PDF security
 */
    struct PDFEncryptionProperties
    {

        //for both 40 and 128 bit security, see 3.5.2 PDF v 1.4 table 3.15, v 1.5 and v 1.6 table 3.20.
        bool CanPrintTheDocument;
        bool CanModifyTheContent;
        bool CanCopyOrExtract;
        bool CanAddOrModify;
        //for revision 3 (bit 128 security) only
        bool CanFillInteractive;
        bool CanExtractForAccessibility;
        bool CanAssemble;
        bool CanPrintFull;

        // encryption will only happen if EncryptionKey is not empty
        // EncryptionKey is actually a construct out of OValue, UValue and DocumentIdentifier
        // if these do not match, behavior is undefined, most likely an invalid PDF will be produced
        // OValue, UValue, EncryptionKey and DocumentIdentifier can be computed from
        // PDFDocInfo, Owner password and User password used the InitEncryption method which
        // implements the algorithms described in the PDF reference chapter 3.5: Encryption
        std::vector<sal_uInt8> OValue;
        std::vector<sal_uInt8> UValue;
        std::vector<sal_uInt8> EncryptionKey;
        std::vector<sal_uInt8> DocumentIdentifier;

        //permission default set for 128 bit, accessibility only
        PDFEncryptionProperties() :
            CanPrintTheDocument         ( false ),
            CanModifyTheContent         ( false ),
            CanCopyOrExtract            ( false ),
            CanAddOrModify              ( false ),
            CanFillInteractive          ( false ),
            CanExtractForAccessibility  ( true ),
            CanAssemble                 ( false ),
            CanPrintFull                ( false )
            {}


        bool Encrypt() const
        { return ! OValue.empty() && ! UValue.empty() && ! DocumentIdentifier.empty(); }
    };

    struct PDFDocInfo
    {
        OUString          Title;          // document title
        OUString          Author;         // document author
        OUString          Subject;        // subject
        OUString          Keywords;       // keywords
        OUString          Creator;        // application that created the original document
        OUString          Producer;       // OpenOffice
    };

    enum ColorMode
    {
        DrawColor, DrawGreyscale
    };

    struct PDFWriterContext
    {
        /* must be a valid file: URL usable by osl */
        OUString                   URL;
        /* the URL of the document being exported, used for relative links*/
        OUString                   BaseURL;
        /*if relative to file system should be formed*/
        bool                            RelFsys;//i56629, i49415?, i64585?
        /*the action to set the PDF hyperlink to*/
        PDFWriter::PDFLinkDefaultAction DefaultLinkAction;
        //convert the .od? target file type in a link to a .pdf type
        //this is examined before doing anything else
        bool                            ConvertOOoTargetToPDFTarget;
        //when the file type is .pdf, force the GoToR action
        bool                            ForcePDFAction;

        /* decides the PDF language level to be produced */
        PDFVersion                      Version;

        /* PDF/UA compliance */
        bool UniversalAccessibilityCompliance;

        /* valid for PDF >= 1.4
           causes the MarkInfo entry in the document catalog to be set
        */
        bool                            Tagged;
        /*  determines in which format a form
            will be submitted.
         */
        PDFWriter::ExportDataFormat     SubmitFormat;
        bool                            AllowDuplicateFieldNames;
        /* the following data members are used to customize the PDF viewer
           preferences
         */
        /* see 3.6.1 PDF v 1.4 ref*/
        PDFWriter::PDFViewerPageMode    PDFDocumentMode;
        PDFWriter::PDFViewerAction      PDFDocumentAction;
        // in percent, valid only if PDFDocumentAction == ActionZoom
        sal_Int32                       Zoom;

        /* see 8.6 PDF v 1.4 ref
           specifies whether to hide the viewer tool
          bars when the document is active.
        */
        bool                            HideViewerToolbar;
        bool                            HideViewerMenubar;
        bool                            HideViewerWindowControls;
        bool                            FitWindow;
        bool                            OpenInFullScreenMode;
        bool                            CenterWindow;
        bool                            DisplayPDFDocumentTitle;
        PDFPageLayout                   PageLayout;
        bool                            FirstPageLeft;
        // initially visible page in viewer (starting with 0 for first page)
        sal_Int32                       InitialPage;
        sal_Int32                       OpenBookmarkLevels; // -1 means all levels

        PDFWriter::PDFEncryptionProperties  Encryption;
        PDFWriter::PDFDocInfo           DocumentInfo;

        bool                            SignPDF;
        OUString                        SignLocation;
        OUString                        SignPassword;
        OUString                        SignReason;
        OUString                        SignContact;
        css::lang::Locale               DocumentLocale; // defines the document default language
        sal_uInt32                      DPIx, DPIy;     // how to handle MapMode( MapUnit::MapPixel )
                                                        // 0 here specifies a default handling
        PDFWriter::ColorMode            ColorMode;
        css::uno::Reference< css::security::XCertificate> SignCertificate;
        OUString                        SignTSA;
        bool                            UseReferenceXObject;

        PDFWriterContext() :
                RelFsys( false ), //i56629, i49415?, i64585?
                DefaultLinkAction( PDFWriter::URIAction ),
                ConvertOOoTargetToPDFTarget( false ),
                ForcePDFAction( false ),
                Version( PDFWriter::PDFVersion::PDF_1_5 ),
                UniversalAccessibilityCompliance( false ),
                Tagged( false ),
                SubmitFormat( PDFWriter::FDF ),
                AllowDuplicateFieldNames( false ),
                PDFDocumentMode( PDFWriter::ModeDefault ),
                PDFDocumentAction( PDFWriter::ActionDefault ),
                Zoom( 100 ),
                HideViewerToolbar( false ),
                HideViewerMenubar( false ),
                HideViewerWindowControls( false ),
                FitWindow( false ),
                OpenInFullScreenMode( false ),
                CenterWindow( false ),
                DisplayPDFDocumentTitle( true ),
                PageLayout( PDFWriter::DefaultLayout ),
                FirstPageLeft( false ),
                InitialPage( 1 ),
                OpenBookmarkLevels( -1 ),
                Encryption(),
                SignPDF( false ),
                DPIx( 0 ),
                DPIy( 0 ),
                ColorMode( PDFWriter::DrawColor ),
                UseReferenceXObject( false )
        {}
    };

    PDFWriter( const PDFWriterContext& rContext, const css::uno::Reference< css::beans::XMaterialHolder >& );
    ~PDFWriter();

    OutputDevice* GetReferenceDevice();

    void NewPage( double nPageWidth, double nPageHeight, Orientation eOrientation = Orientation::Inherit );
    struct PlayMetafileContext
    {
        int     m_nMaxImageResolution;
        bool    m_bOnlyLosslessCompression;
        int     m_nJPEGQuality;
        bool    m_bTransparenciesWereRemoved;

        PlayMetafileContext()
        : m_nMaxImageResolution( 0 )
        , m_bOnlyLosslessCompression( false )
        , m_nJPEGQuality( 90 )
        , m_bTransparenciesWereRemoved( false )
        {}

    };
    void PlayMetafile( const GDIMetaFile&, const PlayMetafileContext&, vcl::PDFExtOutDevData* pDevDat = nullptr );

    /* sets the document locale originally passed with the context to a new value
     * only affects the output if used before calling Emit.
     */
    void SetDocumentLocale( const css::lang::Locale& rDocLocale );

    /* finishes the file */
    bool Emit();

    /*
     * Get a list of errors that occurred during processing
     * this should enable the producer to give feedback about
     * any anomalies that might have occurred
     */
    std::set< ErrorCode > const & GetErrors() const;

    // uses 128bit encryption
    static css::uno::Reference< css::beans::XMaterialHolder >
           InitEncryption( const OUString& i_rOwnerPassword,
                           const OUString& i_rUserPassword
                         );

    /* functions for graphics state */
    /* flag values: see vcl/outdev.hxx */
    void                Push( PushFlags nFlags = PushFlags::ALL );
    void                Pop();

    void               SetClipRegion();
    void               SetClipRegion( const basegfx::B2DPolyPolygon& rRegion );
    void               MoveClipRegion( long nHorzMove, long nVertMove );
    void               IntersectClipRegion( const tools::Rectangle& rRect );
    void               IntersectClipRegion( const basegfx::B2DPolyPolygon& rRegion );

    void               SetLayoutMode( ComplexTextLayoutFlags nMode );
    void               SetDigitLanguage( LanguageType eLang );

    void               SetLineColor( const Color& rColor );
    void               SetLineColor() { SetLineColor( COL_TRANSPARENT ); }

    void               SetFillColor( const Color& rColor );
    void               SetFillColor() { SetFillColor( COL_TRANSPARENT ); }

    void               SetFont( const vcl::Font& rNewFont );
    void               SetTextColor( const Color& rColor );
    void               SetTextFillColor();
    void               SetTextFillColor( const Color& rColor );

    void               SetTextLineColor();
    void               SetTextLineColor( const Color& rColor );
    void               SetOverlineColor();
    void               SetOverlineColor( const Color& rColor );
    void               SetTextAlign( ::TextAlign eAlign );

    void               SetMapMode( const MapMode& rNewMapMode );


    /* actual drawing functions */
    void                DrawText( const Point& rPos, const OUString& rText );

    void                DrawTextLine( const Point& rPos, long nWidth,
                                      FontStrikeout eStrikeout,
                                      FontLineStyle eUnderline,
                                      FontLineStyle eOverline );
    void                DrawTextArray( const Point& rStartPt, const OUString& rStr,
                                       const long* pDXAry,
                                       sal_Int32 nIndex,
                                       sal_Int32 nLen );
    void                DrawStretchText( const Point& rStartPt, sal_uLong nWidth,
                                         const OUString& rStr,
                                         sal_Int32 nIndex, sal_Int32 nLen );
    void                DrawText( const tools::Rectangle& rRect,
                                  const OUString& rStr, DrawTextFlags nStyle );

    void                DrawPixel( const Point& rPt, const Color& rColor );
    void                DrawPixel( const Point& rPt )
    { DrawPixel( rPt, COL_TRANSPARENT ); }

    void                DrawLine( const Point& rStartPt, const Point& rEndPt );
    void                DrawLine( const Point& rStartPt, const Point& rEndPt,
                                  const LineInfo& rLineInfo );
    void                DrawPolyLine( const tools::Polygon& rPoly );
    void                DrawPolyLine( const tools::Polygon& rPoly,
                                      const LineInfo& rLineInfo );
    void                DrawPolyLine( const tools::Polygon& rPoly, const ExtLineInfo& rInfo );
    void                DrawPolygon( const tools::Polygon& rPoly );
    void                DrawPolyPolygon( const tools::PolyPolygon& rPolyPoly );
    void                DrawRect( const tools::Rectangle& rRect );
    void                DrawRect( const tools::Rectangle& rRect,
                                  sal_uLong nHorzRount, sal_uLong nVertRound );
    void                DrawEllipse( const tools::Rectangle& rRect );
    void                DrawArc( const tools::Rectangle& rRect,
                                 const Point& rStartPt, const Point& rEndPt );
    void                DrawPie( const tools::Rectangle& rRect,
                                 const Point& rStartPt, const Point& rEndPt );
    void                DrawChord( const tools::Rectangle& rRect,
                                   const Point& rStartPt, const Point& rEndPt );

    void                DrawBitmap( const Point& rDestPt, const Size& rDestSize,
                                    const Bitmap& rBitmap, const Graphic& rGraphic );

    void                DrawBitmapEx( const Point& rDestPt, const Size& rDestSize,
                                      const BitmapEx& rBitmapEx );

    void                DrawGradient( const tools::Rectangle& rRect, const Gradient& rGradient );
    void                DrawGradient( const tools::PolyPolygon& rPolyPoly, const Gradient& rGradient );

    void                DrawHatch( const tools::PolyPolygon& rPolyPoly, const Hatch& rHatch );

    void                DrawWallpaper( const tools::Rectangle& rRect, const Wallpaper& rWallpaper );
    void                DrawTransparent( const tools::PolyPolygon& rPolyPoly,
                                         sal_uInt16 nTransparencePercent );

    void                BeginTransparencyGroup();

    void                EndTransparencyGroup( const tools::Rectangle& rBoundRect, sal_uInt16 nTransparencePercent );

    void                DrawJPGBitmap( SvStream& rJPGData, bool bIsTrueColor, const Size& rSrcSizePixel, const tools::Rectangle& rTargetArea, const Bitmap& rMask, const Graphic& rGraphic );

    sal_Int32           CreateNamedDest( const OUString& sDestName, const tools::Rectangle& rRect, sal_Int32 nPageNr, DestAreaType eType );
    sal_Int32           CreateDest( const tools::Rectangle& rRect, sal_Int32 nPageNr, DestAreaType eType );
    sal_Int32           CreateLink( const tools::Rectangle& rRect, sal_Int32 nPageNr );

    sal_Int32 CreateScreen(const tools::Rectangle& rRect, sal_Int32 nPageNr);

    sal_Int32           RegisterDestReference( sal_Int32 nDestId, const tools::Rectangle& rRect, sal_Int32 nPageNr, DestAreaType eType );


    void           SetLinkDest( sal_Int32 nLinkId, sal_Int32 nDestId );
    void           SetLinkURL( sal_Int32 nLinkId, const OUString& rURL );

    void SetScreenURL(sal_Int32 nScreenId, const OUString& rURL);
    void SetScreenStream(sal_Int32 nScreenId, const OUString& rURL);

    void                SetLinkPropertyID( sal_Int32 nLinkId, sal_Int32 nPropertyID );
    sal_Int32 CreateOutlineItem( sal_Int32 nParent, const OUString& rText, sal_Int32 nDestID );

    void CreateNote( const tools::Rectangle& rRect, const PDFNote& rNote, sal_Int32 nPageNr );

     sal_Int32 BeginStructureElement( enum StructElement eType, const OUString& rAlias );
    void EndStructureElement();
    void SetCurrentStructureElement( sal_Int32 nElement );

    void SetStructureAttribute( enum StructAttribute eAttr, enum StructAttributeValue eVal );
    void SetStructureAttributeNumerical( enum StructAttribute eAttr, sal_Int32 nValue );
    void SetStructureBoundingBox( const tools::Rectangle& rRect );

    void SetActualText( const OUString& rText );

    void SetAlternateText( const OUString& rText );

    void SetPageTransition( PageTransition eType, sal_uInt32 nMilliSec, sal_Int32 nPageNr );

    sal_Int32 CreateControl( const AnyWidget& rControlType );

    void AddStream( const OUString& rMimeType, PDFOutputStream* pStream );

    static void AppendUnicodeTextString(const OUString& rString, OStringBuffer& rBuffer);

    static OString GetDateTime();
};

}

#endif // INCLUDED_VCL_PDFWRITER_HXX

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