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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 .
+ */
+
+
+#include <pdfiprocessor.hxx>
+#include <xmlemitter.hxx>
+#include <pdfihelper.hxx>
+#include <imagecontainer.hxx>
+#include <genericelements.hxx>
+#include "style.hxx"
+#include <treevisiting.hxx>
+
+#include <sal/log.hxx>
+
+#include <comphelper/sequence.hxx>
+#include <basegfx/polygon/b2dpolygonclipper.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/utils/canvastools.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <vcl/svapp.hxx>
+
+using namespace com::sun::star;
+
+
+namespace pdfi
+{
+
+ PDFIProcessor::PDFIProcessor( const uno::Reference< task::XStatusIndicator >& xStat ,
+ css::uno::Reference< css::uno::XComponentContext > const & xContext) :
+
+ m_xContext(xContext),
+ prevCharWidth(0),
+ m_pDocument( ElementFactory::createDocumentElement() ),
+ m_pCurPage(nullptr),
+ m_pCurElement(nullptr),
+ m_nNextFontId( 1 ),
+ m_aIdToFont(),
+ m_aFontToId(),
+ m_aGCStack(),
+ m_nNextGCId( 1 ),
+ m_aIdToGC(),
+ m_aGCToId(),
+ m_aImages(),
+ m_nPages(0),
+ m_nNextZOrder( 1 ),
+ m_xStatusIndicator( xStat )
+{
+ FontAttributes aDefFont;
+ aDefFont.familyName = "Helvetica";
+ aDefFont.isBold = false;
+ aDefFont.isItalic = false;
+ aDefFont.size = 10*PDFI_OUTDEV_RESOLUTION/72;
+ m_aIdToFont.insert({0, aDefFont});
+ m_aFontToId.insert({aDefFont, 0});
+
+ GraphicsContext aDefGC;
+ m_aGCStack.push_back( aDefGC );
+ m_aGCToId.insert({aDefGC, 0});
+ m_aIdToGC.insert({0, aDefGC});
+}
+
+void PDFIProcessor::setPageNum( sal_Int32 nPages )
+{
+ m_nPages = nPages;
+}
+
+
+void PDFIProcessor::pushState()
+{
+ GraphicsContextStack::value_type const a(m_aGCStack.back());
+ m_aGCStack.push_back(a);
+}
+
+void PDFIProcessor::popState()
+{
+ m_aGCStack.pop_back();
+}
+
+void PDFIProcessor::setFlatness( double value )
+{
+ getCurrentContext().Flatness = value;
+}
+
+void PDFIProcessor::setTransformation( const geometry::AffineMatrix2D& rMatrix )
+{
+ basegfx::unotools::homMatrixFromAffineMatrix(
+ getCurrentContext().Transformation,
+ rMatrix );
+}
+
+void PDFIProcessor::setLineDash( const uno::Sequence<double>& dashes,
+ double /*start*/ )
+{
+ // TODO(F2): factor in start offset
+ GraphicsContext& rContext( getCurrentContext() );
+ comphelper::sequenceToContainer(rContext.DashArray,dashes);
+}
+
+void PDFIProcessor::setLineJoin(sal_Int8 nJoin)
+{
+ getCurrentContext().LineJoin = nJoin;
+}
+
+void PDFIProcessor::setLineCap(sal_Int8 nCap)
+{
+ getCurrentContext().LineCap = nCap;
+}
+
+void PDFIProcessor::setMiterLimit(double)
+{
+ SAL_WARN("sdext.pdfimport", "PDFIProcessor::setMiterLimit(): not supported by ODF");
+}
+
+void PDFIProcessor::setLineWidth(double nWidth)
+{
+ getCurrentContext().LineWidth = nWidth;
+}
+
+void PDFIProcessor::setFillColor( const rendering::ARGBColor& rColor )
+{
+ getCurrentContext().FillColor = rColor;
+}
+
+void PDFIProcessor::setStrokeColor( const rendering::ARGBColor& rColor )
+{
+ getCurrentContext().LineColor = rColor;
+}
+
+void PDFIProcessor::setFont( const FontAttributes& i_rFont )
+{
+ FontAttributes aChangedFont( i_rFont );
+ GraphicsContext& rGC=getCurrentContext();
+ // for text render modes, please see PDF reference manual
+ aChangedFont.isOutline = ( (rGC.TextRenderMode == 1) || (rGC. TextRenderMode == 2) );
+ FontToIdMap::const_iterator it = m_aFontToId.find( aChangedFont );
+ if( it != m_aFontToId.end() )
+ rGC.FontId = it->second;
+ else
+ {
+ m_aFontToId[ aChangedFont ] = m_nNextFontId;
+ m_aIdToFont[ m_nNextFontId ] = aChangedFont;
+ rGC.FontId = m_nNextFontId;
+ m_nNextFontId++;
+ }
+}
+
+void PDFIProcessor::setTextRenderMode( sal_Int32 i_nMode )
+{
+ GraphicsContext& rGC=getCurrentContext();
+ rGC.TextRenderMode = i_nMode;
+ IdToFontMap::iterator it = m_aIdToFont.find( rGC.FontId );
+ if( it != m_aIdToFont.end() )
+ setFont( it->second );
+}
+
+sal_Int32 PDFIProcessor::getFontId( const FontAttributes& rAttr ) const
+{
+ const sal_Int32 nCurFont = getCurrentContext().FontId;
+ const_cast<PDFIProcessor*>(this)->setFont( rAttr );
+ const sal_Int32 nFont = getCurrentContext().FontId;
+ const_cast<PDFIProcessor*>(this)->getCurrentContext().FontId = nCurFont;
+
+ return nFont;
+}
+
+// line diagnose block - start
+void PDFIProcessor::processGlyphLine()
+{
+ if (m_GlyphsList.empty())
+ return;
+
+ double spaceDetectBoundary = 0.0;
+
+ // Try to find space glyph and its width
+ for (CharGlyph & i : m_GlyphsList)
+ {
+ OUString& glyph = i.getGlyph();
+
+ sal_Unicode ch = '\0';
+ if (!glyph.isEmpty())
+ ch = glyph[0];
+
+ if ((ch == 0x20) || (ch == 0xa0))
+ {
+ double spaceWidth = i.getWidth();
+ spaceDetectBoundary = spaceWidth * 0.5;
+ break;
+ }
+ }
+
+ // If space glyph is not found, use average glyph width instead
+ if (spaceDetectBoundary == 0.0)
+ {
+ double avgGlyphWidth = 0.0;
+ for (const CharGlyph & i : m_GlyphsList)
+ avgGlyphWidth += i.getWidth();
+ avgGlyphWidth /= m_GlyphsList.size();
+ spaceDetectBoundary = avgGlyphWidth * 0.2;
+ }
+
+ FrameElement* frame = ElementFactory::createFrameElement(
+ m_GlyphsList[0].getCurElement(),
+ getGCId(m_GlyphsList[0].getGC()));
+ frame->ZOrder = m_nNextZOrder++;
+ frame->IsForText = true;
+ frame->FontSize = getFont(m_GlyphsList[0].getGC().FontId).size;
+ ParagraphElement* para = ElementFactory::createParagraphElement(frame);
+
+ for (size_t i = 0; i < m_GlyphsList.size(); i++)
+ {
+ bool prependSpace = false;
+ TextElement* text = ElementFactory::createTextElement(
+ para,
+ getGCId(m_GlyphsList[i].getGC()),
+ m_GlyphsList[i].getGC().FontId);
+ if (i == 0)
+ {
+ text->x = m_GlyphsList[0].getGC().Transformation.get(0, 2);
+ text->y = m_GlyphsList[0].getGC().Transformation.get(1, 2);
+ text->w = 0;
+ text->h = 0;
+ para->updateGeometryWith(text);
+ frame->updateGeometryWith(para);
+ }
+ else
+ {
+ double spaceSize = m_GlyphsList[i].getPrevSpaceWidth();
+ prependSpace = spaceSize > spaceDetectBoundary;
+ }
+ if (prependSpace)
+ text->Text.append(" ");
+ text->Text.append(m_GlyphsList[i].getGlyph());
+ }
+
+ m_GlyphsList.clear();
+}
+
+void PDFIProcessor::drawGlyphs( const OUString& rGlyphs,
+ const geometry::RealRectangle2D& rRect,
+ const geometry::Matrix2D& rFontMatrix,
+ double fontSize)
+{
+ double ascent = getFont(getCurrentContext().FontId).ascent;
+
+ basegfx::B2DHomMatrix fontMatrix(
+ rFontMatrix.m00, rFontMatrix.m01, 0.0,
+ rFontMatrix.m10, rFontMatrix.m11, 0.0);
+ fontMatrix.scale(fontSize, fontSize);
+
+ basegfx::B2DHomMatrix totalTextMatrix1(fontMatrix);
+ basegfx::B2DHomMatrix totalTextMatrix2(fontMatrix);
+ totalTextMatrix1.translate(rRect.X1, rRect.Y1);
+ totalTextMatrix2.translate(rRect.X2, rRect.Y2);
+
+ basegfx::B2DHomMatrix corrMatrix;
+ corrMatrix.scale(1.0, -1.0);
+ corrMatrix.translate(0.0, ascent);
+ totalTextMatrix1 = totalTextMatrix1 * corrMatrix;
+ totalTextMatrix2 = totalTextMatrix2 * corrMatrix;
+
+ totalTextMatrix1 *= getCurrentContext().Transformation;
+ totalTextMatrix2 *= getCurrentContext().Transformation;
+
+ basegfx::B2DHomMatrix invMatrix(totalTextMatrix1);
+ basegfx::B2DHomMatrix invPrevMatrix(prevTextMatrix);
+ invMatrix.invert();
+ invPrevMatrix.invert();
+ basegfx::B2DHomMatrix offsetMatrix1(totalTextMatrix1);
+ basegfx::B2DHomMatrix offsetMatrix2(totalTextMatrix2);
+ offsetMatrix1 *= invPrevMatrix;
+ offsetMatrix2 *= invMatrix;
+
+ double charWidth = offsetMatrix2.get(0, 2);
+ double prevSpaceWidth = offsetMatrix1.get(0, 2) - prevCharWidth;
+
+ if ((totalTextMatrix1.get(0, 0) != prevTextMatrix.get(0, 0)) ||
+ (totalTextMatrix1.get(0, 1) != prevTextMatrix.get(0, 1)) ||
+ (totalTextMatrix1.get(1, 0) != prevTextMatrix.get(1, 0)) ||
+ (totalTextMatrix1.get(1, 1) != prevTextMatrix.get(1, 1)) ||
+ (offsetMatrix1.get(0, 2) < 0.0) ||
+ (prevSpaceWidth > prevCharWidth * 1.3) ||
+ (!basegfx::fTools::equalZero(offsetMatrix1.get(1, 2), 0.0001)))
+ {
+ processGlyphLine();
+ }
+
+ CharGlyph aGlyph(m_pCurElement, getCurrentContext(), charWidth, prevSpaceWidth, rGlyphs);
+ aGlyph.getGC().Transformation = totalTextMatrix1;
+ m_GlyphsList.push_back(aGlyph);
+
+ prevCharWidth = charWidth;
+ prevTextMatrix = totalTextMatrix1;
+}
+
+void PDFIProcessor::endText()
+{
+ TextElement* pText = dynamic_cast<TextElement*>(m_pCurElement);
+ if( pText )
+ m_pCurElement = pText->Parent;
+}
+
+void PDFIProcessor::setupImage(ImageId nImage)
+{
+ const GraphicsContext& rGC(getCurrentContext());
+
+ basegfx::B2DTuple aScale, aTranslation;
+ double fRotate, fShearX;
+ rGC.Transformation.decompose(aScale, aTranslation, fRotate, fShearX);
+
+ const sal_Int32 nGCId = getGCId(rGC);
+ FrameElement* pFrame = ElementFactory::createFrameElement( m_pCurElement, nGCId );
+ ImageElement* pImageElement = ElementFactory::createImageElement( pFrame, nGCId, nImage );
+ pFrame->x = pImageElement->x = aTranslation.getX();
+ pFrame->y = pImageElement->y = aTranslation.getY();
+ pFrame->w = pImageElement->w = aScale.getX();
+ pFrame->h = pImageElement->h = aScale.getY();
+ pFrame->ZOrder = m_nNextZOrder++;
+
+ // Poppler wrapper takes into account that vertical axes of PDF and ODF are opposite,
+ // and it flips matrix vertically (see poppler's GfxState::GfxState()).
+ // But image internal vertical axis is independent of PDF vertical axis direction,
+ // so arriving matrix is extra-flipped relative to image.
+ // We force vertical flip here to compensate that.
+ pFrame->MirrorVertical = true;
+}
+
+void PDFIProcessor::drawMask(const uno::Sequence<beans::PropertyValue>& xBitmap,
+ bool /*bInvert*/ )
+{
+ // TODO(F3): Handle mask and inversion
+ setupImage( m_aImages.addImage(xBitmap) );
+}
+
+void PDFIProcessor::drawImage(const uno::Sequence<beans::PropertyValue>& xBitmap )
+{
+ setupImage( m_aImages.addImage(xBitmap) );
+}
+
+void PDFIProcessor::drawColorMaskedImage(const uno::Sequence<beans::PropertyValue>& xBitmap,
+ const uno::Sequence<uno::Any>& /*xMaskColors*/ )
+{
+ // TODO(F3): Handle mask colors
+ setupImage( m_aImages.addImage(xBitmap) );
+}
+
+void PDFIProcessor::drawMaskedImage(const uno::Sequence<beans::PropertyValue>& xBitmap,
+ const uno::Sequence<beans::PropertyValue>& /*xMask*/,
+ bool /*bInvertMask*/)
+{
+ // TODO(F3): Handle mask and inversion
+ setupImage( m_aImages.addImage(xBitmap) );
+}
+
+void PDFIProcessor::drawAlphaMaskedImage(const uno::Sequence<beans::PropertyValue>& xBitmap,
+ const uno::Sequence<beans::PropertyValue>& /*xMask*/)
+{
+ // TODO(F3): Handle mask
+
+ setupImage( m_aImages.addImage(xBitmap) );
+
+}
+
+void PDFIProcessor::strokePath( const uno::Reference< rendering::XPolyPolygon2D >& rPath )
+{
+ basegfx::B2DPolyPolygon aPoly=basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(rPath);
+ aPoly.transform(getCurrentContext().Transformation);
+
+ PolyPolyElement* pPoly = ElementFactory::createPolyPolyElement(
+ m_pCurElement,
+ getGCId(getCurrentContext()),
+ aPoly,
+ PATH_STROKE );
+ pPoly->updateGeometry();
+ pPoly->ZOrder = m_nNextZOrder++;
+}
+
+void PDFIProcessor::fillPath( const uno::Reference< rendering::XPolyPolygon2D >& rPath )
+{
+ basegfx::B2DPolyPolygon aPoly=basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(rPath);
+ aPoly.transform(getCurrentContext().Transformation);
+
+ PolyPolyElement* pPoly = ElementFactory::createPolyPolyElement(
+ m_pCurElement,
+ getGCId(getCurrentContext()),
+ aPoly,
+ PATH_FILL );
+ pPoly->updateGeometry();
+ pPoly->ZOrder = m_nNextZOrder++;
+}
+
+void PDFIProcessor::eoFillPath( const uno::Reference< rendering::XPolyPolygon2D >& rPath )
+{
+ basegfx::B2DPolyPolygon aPoly=basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(rPath);
+ aPoly.transform(getCurrentContext().Transformation);
+
+ PolyPolyElement* pPoly = ElementFactory::createPolyPolyElement(
+ m_pCurElement,
+ getGCId(getCurrentContext()),
+ aPoly,
+ PATH_EOFILL );
+ pPoly->updateGeometry();
+ pPoly->ZOrder = m_nNextZOrder++;
+}
+
+void PDFIProcessor::intersectClip(const uno::Reference< rendering::XPolyPolygon2D >& rPath)
+{
+ // TODO(F3): interpret fill mode
+ basegfx::B2DPolyPolygon aNewClip = basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(rPath);
+ aNewClip.transform(getCurrentContext().Transformation);
+ basegfx::B2DPolyPolygon aCurClip = getCurrentContext().Clip;
+
+ if( aCurClip.count() ) // #i92985# adapted API from (..., false, false) to (..., true, false)
+ aNewClip = basegfx::utils::clipPolyPolygonOnPolyPolygon( aCurClip, aNewClip, true, false );
+
+ getCurrentContext().Clip = aNewClip;
+}
+
+void PDFIProcessor::intersectEoClip(const uno::Reference< rendering::XPolyPolygon2D >& rPath)
+{
+ // TODO(F3): interpret fill mode
+ basegfx::B2DPolyPolygon aNewClip = basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(rPath);
+ aNewClip.transform(getCurrentContext().Transformation);
+ basegfx::B2DPolyPolygon aCurClip = getCurrentContext().Clip;
+
+ if( aCurClip.count() ) // #i92985# adapted API from (..., false, false) to (..., true, false)
+ aNewClip = basegfx::utils::clipPolyPolygonOnPolyPolygon( aCurClip, aNewClip, true, false );
+
+ getCurrentContext().Clip = aNewClip;
+}
+
+void PDFIProcessor::hyperLink( const geometry::RealRectangle2D& rBounds,
+ const OUString& rURI )
+{
+ if( !rURI.isEmpty() )
+ {
+ HyperlinkElement* pLink = ElementFactory::createHyperlinkElement(
+ &m_pCurPage->Hyperlinks,
+ rURI );
+ pLink->x = rBounds.X1;
+ pLink->y = rBounds.Y1;
+ pLink->w = rBounds.X2-rBounds.X1;
+ pLink->h = rBounds.Y2-rBounds.Y1;
+ }
+}
+
+const FontAttributes& PDFIProcessor::getFont( sal_Int32 nFontId ) const
+{
+ IdToFontMap::const_iterator it = m_aIdToFont.find( nFontId );
+ if( it == m_aIdToFont.end() )
+ it = m_aIdToFont.find( 0 );
+ return it->second;
+}
+
+sal_Int32 PDFIProcessor::getGCId( const GraphicsContext& rGC )
+{
+ sal_Int32 nGCId = 0;
+ auto it = m_aGCToId.find( rGC );
+ if( it != m_aGCToId.end() )
+ nGCId = it->second;
+ else
+ {
+ m_aGCToId.insert({rGC, m_nNextGCId});
+ m_aIdToGC.insert({m_nNextGCId, rGC});
+ nGCId = m_nNextGCId;
+ m_nNextGCId++;
+ }
+
+ return nGCId;
+}
+
+const GraphicsContext& PDFIProcessor::getGraphicsContext( sal_Int32 nGCId ) const
+{
+ auto it = m_aIdToGC.find( nGCId );
+ if( it == m_aIdToGC.end() )
+ it = m_aIdToGC.find( 0 );
+ return it->second;
+}
+
+void PDFIProcessor::endPage()
+{
+ processGlyphLine(); // draw last line
+ if( m_xStatusIndicator.is()
+ && m_pCurPage
+ && m_pCurPage->PageNumber == m_nPages
+ )
+ m_xStatusIndicator->end();
+}
+
+void PDFIProcessor::startPage( const geometry::RealSize2D& rSize )
+{
+ // initial clip is to page bounds
+ getCurrentContext().Clip = basegfx::B2DPolyPolygon(
+ basegfx::utils::createPolygonFromRect(
+ basegfx::B2DRange( 0, 0, rSize.Width, rSize.Height )));
+
+ sal_Int32 nNextPageNr = m_pCurPage ? m_pCurPage->PageNumber+1 : 1;
+ if( m_xStatusIndicator.is() )
+ {
+ if( nNextPageNr == 1 )
+ startIndicator( " " );
+ m_xStatusIndicator->setValue( nNextPageNr );
+ }
+ m_pCurPage = ElementFactory::createPageElement(m_pDocument.get(), nNextPageNr);
+ m_pCurElement = m_pCurPage;
+ m_pCurPage->w = rSize.Width;
+ m_pCurPage->h = rSize.Height;
+ m_nNextZOrder = 1;
+
+
+}
+
+void PDFIProcessor::emit( XmlEmitter& rEmitter,
+ const TreeVisitorFactory& rVisitorFactory )
+{
+#if OSL_DEBUG_LEVEL > 0
+ m_pDocument->emitStructure( 0 );
+#endif
+
+ ElementTreeVisitorSharedPtr optimizingVisitor(
+ rVisitorFactory.createOptimizingVisitor(*this));
+ // FIXME: localization
+ startIndicator( " " );
+ m_pDocument->visitedBy( *optimizingVisitor, std::list<std::unique_ptr<Element>>::const_iterator());
+
+#if OSL_DEBUG_LEVEL > 0
+ m_pDocument->emitStructure( 0 );
+#endif
+
+ // get styles
+ StyleContainer aStyles;
+ ElementTreeVisitorSharedPtr finalizingVisitor(
+ rVisitorFactory.createStyleCollectingVisitor(aStyles,*this));
+ // FIXME: localization
+
+ m_pDocument->visitedBy( *finalizingVisitor, std::list<std::unique_ptr<Element>>::const_iterator() );
+
+ EmitContext aContext( rEmitter, aStyles, m_aImages, *this, m_xStatusIndicator, m_xContext );
+ ElementTreeVisitorSharedPtr aEmittingVisitor(
+ rVisitorFactory.createEmittingVisitor(aContext));
+
+ PropertyMap aProps;
+ // document prolog
+ #define OASIS_STR "urn:oasis:names:tc:opendocument:xmlns:"
+ aProps[ "xmlns:office" ] = OASIS_STR "office:1.0" ;
+ aProps[ "xmlns:style" ] = OASIS_STR "style:1.0" ;
+ aProps[ "xmlns:text" ] = OASIS_STR "text:1.0" ;
+ aProps[ "xmlns:svg" ] = OASIS_STR "svg-compatible:1.0" ;
+ aProps[ "xmlns:table" ] = OASIS_STR "table:1.0" ;
+ aProps[ "xmlns:draw" ] = OASIS_STR "drawing:1.0" ;
+ aProps[ "xmlns:fo" ] = OASIS_STR "xsl-fo-compatible:1.0" ;
+ aProps[ "xmlns:xlink"] = "http://www.w3.org/1999/xlink";
+ aProps[ "xmlns:dc"] = "http://purl.org/dc/elements/1.1/";
+ aProps[ "xmlns:number"] = OASIS_STR "datastyle:1.0" ;
+ aProps[ "xmlns:presentation"] = OASIS_STR "presentation:1.0" ;
+ aProps[ "xmlns:math"] = "http://www.w3.org/1998/Math/MathML";
+ aProps[ "xmlns:form"] = OASIS_STR "form:1.0" ;
+ aProps[ "xmlns:script"] = OASIS_STR "script:1.0" ;
+ aProps[ "xmlns:dom"] = "http://www.w3.org/2001/xml-events";
+ aProps[ "xmlns:xforms"] = "http://www.w3.org/2002/xforms";
+ aProps[ "xmlns:xsd"] = "http://www.w3.org/2001/XMLSchema";
+ aProps[ "xmlns:xsi"] = "http://www.w3.org/2001/XMLSchema-instance";
+ aProps[ "office:version" ] = "1.0";
+
+ aContext.rEmitter.beginTag( "office:document", aProps );
+
+ // emit style list
+ aStyles.emit( aContext, *aEmittingVisitor );
+
+ m_pDocument->visitedBy( *aEmittingVisitor, std::list<std::unique_ptr<Element>>::const_iterator() );
+ aContext.rEmitter.endTag( "office:document" );
+ endIndicator();
+}
+
+void PDFIProcessor::startIndicator( const OUString& rText )
+{
+ sal_Int32 nElements = m_nPages;
+ if( !m_xStatusIndicator.is() )
+ return;
+
+ sal_Int32 nLength = rText.getLength();
+ OUStringBuffer aStr( nLength*2 );
+ const sal_Unicode* pText = rText.getStr();
+ for( int i = 0; i < nLength; i++ )
+ {
+ if( nLength-i > 1&&
+ pText[i] == '%' &&
+ pText[i+1] == 'd'
+ )
+ {
+ aStr.append( nElements );
+ i++;
+ }
+ else
+ aStr.append( pText[i] );
+ }
+ m_xStatusIndicator->start( aStr.makeStringAndClear(), nElements );
+}
+
+void PDFIProcessor::endIndicator()
+{
+ if( m_xStatusIndicator.is() )
+ m_xStatusIndicator->end();
+}
+
+static bool lr_tb_sort( std::unique_ptr<Element> const & pLeft, std::unique_ptr<Element> const & pRight )
+{
+ // Ensure irreflexivity (which could be compromised if h or w is negative):
+ if (pLeft == pRight)
+ return false;
+
+ // first: top-bottom sorting
+
+ // Note: allow for 10% overlap on text lines since text lines are usually
+ // of the same order as font height whereas the real paint area
+ // of text is usually smaller
+ double fudge_factor_left = 0.0, fudge_factor_right = 0.0;
+ if( dynamic_cast< TextElement* >(pLeft.get()) )
+ fudge_factor_left = 0.1;
+ if (dynamic_cast< TextElement* >(pRight.get()))
+ fudge_factor_right = 0.1;
+
+ // Allow negative height
+ double lower_boundary_left = pLeft->y + std::max(pLeft->h, 0.0) - fabs(pLeft->h) * fudge_factor_left;
+ double lower_boundary_right = pRight->y + std::max(pRight->h, 0.0) - fabs(pRight->h) * fudge_factor_right;
+ double upper_boundary_left = pLeft->y + std::min(pLeft->h, 0.0);
+ double upper_boundary_right = pRight->y + std::min(pRight->h, 0.0);
+ // if left's lower boundary is above right's upper boundary
+ // then left is smaller
+ if( lower_boundary_left < upper_boundary_right )
+ return true;
+ // if right's lower boundary is above left's upper boundary
+ // then left is definitely not smaller
+ if( lower_boundary_right < upper_boundary_left )
+ return false;
+
+ // Allow negative width
+ double left_boundary_left = pLeft->y + std::min(pLeft->w, 0.0);
+ double left_boundary_right = pRight->y + std::min(pRight->w, 0.0);
+ double right_boundary_left = pLeft->y + std::max(pLeft->w, 0.0);
+ double right_boundary_right = pRight->y + std::max(pRight->w, 0.0);
+ // by now we have established that left and right are inside
+ // a "line", that is they have vertical overlap
+ // second: left-right sorting
+ // if left's right boundary is left to right's left boundary
+ // then left is smaller
+ if( right_boundary_left < left_boundary_right )
+ return true;
+ // if right's right boundary is left to left's left boundary
+ // then left is definitely not smaller
+ if( right_boundary_right < left_boundary_left )
+ return false;
+
+ // here we have established vertical and horizontal overlap
+ // so sort left first, top second
+ if( pLeft->x < pRight->x )
+ return true;
+ if( pRight->x < pLeft->x )
+ return false;
+ if( pLeft->y < pRight->y )
+ return true;
+
+ return false;
+}
+
+void PDFIProcessor::sortElements(Element* pEle)
+{
+ if( pEle->Children.empty() )
+ return;
+
+ // sort method from std::list is equivalent to stable_sort
+ // See S Meyers, Effective STL
+ pEle->Children.sort(lr_tb_sort);
+}
+
+// helper method: get a mirrored string
+OUString PDFIProcessor::mirrorString( const OUString& i_rString )
+{
+ const sal_Int32 nLen = i_rString.getLength();
+ OUStringBuffer aMirror( nLen );
+
+ sal_Int32 i = 0;
+ while(i < nLen)
+ {
+ // read one code point
+ const sal_uInt32 nCodePoint = i_rString.iterateCodePoints( &i );
+
+ // and append it mirrored
+ aMirror.appendUtf32( GetMirroredChar(nCodePoint) );
+ }
+ return aMirror.makeStringAndClear();
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */