Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 260 insertions, 0 deletions

diff --git a/sw/inc/EnhancedPDFExportHelper.hxx b/sw/inc/EnhancedPDFExportHelper.hxx
new file mode 100644
index 000000000..8b72001f0
--- /dev/null
+++ b/sw/inc/EnhancedPDFExportHelper.hxx
@@ -0,0 +1,260 @@
+/* -*- 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_SW_INC_ENHANCEDPDFEXPORTHELPER_HXX
+#define INCLUDED_SW_INC_ENHANCEDPDFEXPORTHELPER_HXX
+
+#include <i18nlangtag/lang.h>
+#include <vcl/pdfwriter.hxx>
+#include "swrect.hxx"
+#include "swtypes.hxx"
+
+#include <map>
+#include <memory>
+#include <vector>
+#include <set>
+
+namespace vcl
+{
+    class PDFExtOutDevData;
+}
+class OutputDevice;
+class SwFrame;
+class SwLinePortion;
+class SwPageFrame;
+class SwPrintData;
+class SwTextPainter;
+class SwEditShell;
+class StringRangeEnumerator;
+class SwTextNode;
+class SwTable;
+class SwNumberTreeNode;
+
+/*
+ * Mapping of OOo elements to tagged pdf elements:
+ *
+ * OOo element                              tagged pdf element
+ * -----------                              ------------------
+ *
+ * Grouping elements:
+ *
+ * SwRootFrame                                Document
+ *                                          Part
+ *                                          Art
+ * SwSection                                Sect
+ * SwFootnoteContFrame and SwFlyFrame                Div
+ * SwFormat "Quotations"                       BlockQuote
+ * SwFormat "Caption"                          Caption
+ * SwSection (TOC)                          TOC
+ * SwTextNode in TOC                         TOCI
+ * SwSection (Index)                        Index
+ *
+ * Block-Level Structure Elements:
+ *
+ * SwTextNode                                P
+ * SwFormat "Heading"                          H
+ * SwTextNode with Outline                   H1 - H6
+ * SwTextNode with NumRule                   L, LI, LBody
+ * SwTable                                  Table
+ * SwRowFrame                                 TR
+ * SwCellFrame in Headline row or
+ * SwFtm "Table Heading"                    TH
+ * SwCellFrame                                TD
+ *
+ * Inline-Level Structure Elements:
+ *
+ * SwTextPortion                             Span
+ * SwFormat "Quotation"                        Quote
+ * SwFootnoteFrame                                 Note
+ *                                          Form
+ *                                          Reference
+ * SwFieldPortion (AuthorityField)            BibEntry
+ * SwFormat "Source Text"                      Code
+ * SwFootnotePortion, SwFieldPortion (RefField)    Link
+ *
+ * Illustration elements:
+ *
+ * SwFlyFrame with SwNoTextFrame                 Figure
+ * SwFlyFrame with Math OLE Object            Formula
+ *
+ */
+
+struct Num_Info
+{
+    const SwFrame& mrFrame;
+    Num_Info( const SwFrame& rFrame ) : mrFrame( rFrame ) {};
+};
+
+struct Frame_Info
+{
+    const SwFrame& mrFrame;
+    Frame_Info( const SwFrame& rFrame ) : mrFrame( rFrame ) {};
+};
+
+struct Por_Info
+{
+    const SwLinePortion& mrPor;
+    const SwTextPainter& mrTextPainter;
+    Por_Info( const SwLinePortion& rPor, const SwTextPainter& rTextPainer )
+            : mrPor( rPor ), mrTextPainter( rTextPainer ) {};
+};
+
+struct lt_TableColumn
+{
+    bool operator()( tools::Long nVal1, tools::Long nVal2 ) const
+    {
+        return nVal1 + ( MINLAY - 1 ) < nVal2;
+    }
+};
+
+// Analyses a given frame during painting and generates the appropriate
+// structure elements.
+class SwTaggedPDFHelper
+{
+    private:
+
+    // This will be incremented for each BeginTag() call.
+    // It denotes the number of tags to close during EndStructureElements();
+    sal_uInt8 m_nEndStructureElement;
+
+    //  If an already existing tag is reopened for follows of flow frames,
+    // this value stores the tag id which has to be restored.
+    sal_Int32 m_nRestoreCurrentTag;
+
+    vcl::PDFExtOutDevData* mpPDFExtOutDevData;
+
+    const Num_Info* mpNumInfo;
+    const Frame_Info* mpFrameInfo;
+    const Por_Info* mpPorInfo;
+
+    void BeginTag( vcl::PDFWriter::StructElement aTagRole, const OUString& rTagName );
+    void EndTag();
+
+    void SetAttributes( vcl::PDFWriter::StructElement eType );
+
+    // These functions are called by the c'tor, d'tor
+    void BeginNumberedListStructureElements();
+    void BeginBlockStructureElements();
+    void BeginInlineStructureElements();
+    void EndStructureElements();
+
+    bool CheckReopenTag();
+    void CheckRestoreTag() const;
+
+    public:
+
+    // pFrameInfo != 0 => BeginBlockStructureElement
+    // pPorInfo != 0 => BeginInlineStructureElement
+    // pFrameInfo, pPorInfo = 0 => BeginNonStructureElement
+    SwTaggedPDFHelper( const Num_Info* pNumInfo, const Frame_Info* pFrameInfo, const Por_Info* pPorInfo,
+                       OutputDevice const & rOut );
+    ~SwTaggedPDFHelper();
+
+    static bool IsExportTaggedPDF( const OutputDevice& rOut );
+};
+
+/*
+ * Analyses the document structure and export Notes, Hyperlinks, References,
+ * and Outline. Link ids created during pdf export are stored in
+ * aReferenceIdMap and aHyperlinkIdMap, in order to use them during
+ * tagged pdf output. Therefore the SwEnhancedPDFExportHelper is used
+ * before painting. Unfortunately links from the EditEngine into the
+ * Writer document require to be exported after they have been painted.
+ * Therefore SwEnhancedPDFExportHelper also has to be used after the
+ * painting process, the parameter bEditEngineOnly indicated that only
+ * the bookmarks from the EditEngine have to be processed.
+ */
+typedef std::set< tools::Long, lt_TableColumn > TableColumnsMapEntry;
+typedef std::pair< SwRect, sal_Int32 > IdMapEntry;
+typedef std::vector< IdMapEntry > LinkIdMap;
+typedef std::map< const SwTable*, TableColumnsMapEntry > TableColumnsMap;
+typedef std::map< const SwNumberTreeNode*, sal_Int32 > NumListIdMap;
+typedef std::map< const SwNumberTreeNode*, sal_Int32 > NumListBodyIdMap;
+typedef std::map< const void*, sal_Int32 > FrameTagIdMap;
+
+class SwEnhancedPDFExportHelper
+{
+    private:
+
+    SwEditShell& mrSh;
+    OutputDevice& mrOut;
+
+    std::unique_ptr<StringRangeEnumerator> mpRangeEnum;
+    /** The problem is that numbers in StringRangeEnumerator aren't accordant
+     * to real page numbers if mbSkipEmptyPages is true, because in this case
+     * empty pages are excluded from a page range and numbers in
+     * StringRangeEnumerator are shifted.
+     *
+     * maPageNumberMap[real_page_number] is either a corresponding page number
+     * in a page range without empty pages, or -1 if this page is empty. */
+    std::vector< sal_Int32 > maPageNumberMap;
+
+    bool mbSkipEmptyPages;
+    bool mbEditEngineOnly;
+
+    const SwPrintData& mrPrintData;
+
+    static TableColumnsMap s_aTableColumnsMap;
+    static LinkIdMap s_aLinkIdMap;
+    static NumListIdMap s_aNumListIdMap;
+    static NumListBodyIdMap s_aNumListBodyIdMap;
+    static FrameTagIdMap s_aFrameTagIdMap;
+
+    static LanguageType s_eLanguageDefault;
+
+    void EnhancedPDFExport();
+
+    /// Exports bibliography entry links.
+    void ExportAuthorityEntryLinks();
+
+    sal_Int32 CalcOutputPageNum( const SwRect& rRect ) const;
+    std::vector< sal_Int32 > CalcOutputPageNums( const SwRect& rRect ) const;
+
+    void MakeHeaderFooterLinks( vcl::PDFExtOutDevData& rPDFExtOutDevData,
+                                const SwTextNode& rTNd, const SwRect& rLinkRect,
+                                sal_Int32 nDestId, const OUString& rURL,
+                                bool bIntern, OUString const& rContent) const;
+
+    public:
+
+    SwEnhancedPDFExportHelper( SwEditShell& rSh,
+                               OutputDevice& rOut,
+                               const OUString& rPageRange,
+                               bool bSkipEmptyPages,
+                               bool bEditEngineOnly,
+                               const SwPrintData& rPrintData );
+
+    ~SwEnhancedPDFExportHelper();
+
+    static TableColumnsMap& GetTableColumnsMap() {return s_aTableColumnsMap; }
+    static LinkIdMap& GetLinkIdMap() { return s_aLinkIdMap; }
+    static NumListIdMap& GetNumListIdMap() {return s_aNumListIdMap; }
+    static NumListBodyIdMap& GetNumListBodyIdMap() {return s_aNumListBodyIdMap; }
+    static FrameTagIdMap& GetFrameTagIdMap() { return s_aFrameTagIdMap; }
+
+    static LanguageType GetDefaultLanguage() {return s_eLanguageDefault; }
+
+    //scale and position rRectangle if we're scaling due to notes in margins.
+    tools::Rectangle SwRectToPDFRect(const SwPageFrame* pCurrPage,
+        const tools::Rectangle& rRectangle) const;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */