diff options
Diffstat (limited to 'sdext/source/pdfimport/tree/writertreevisiting.cxx')
| -rw-r--r-- | sdext/source/pdfimport/tree/writertreevisiting.cxx | 1221 |
1 files changed, 1221 insertions, 0 deletions
diff --git a/sdext/source/pdfimport/tree/writertreevisiting.cxx b/sdext/source/pdfimport/tree/writertreevisiting.cxx new file mode 100644 index 000000000000..f01fb959136d --- /dev/null +++ b/sdext/source/pdfimport/tree/writertreevisiting.cxx @@ -0,0 +1,1221 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_sdext.hxx" + +#include "pdfiprocessor.hxx" +#include "xmlemitter.hxx" +#include "pdfihelper.hxx" +#include "imagecontainer.hxx" +#include "style.hxx" +#include "writertreevisiting.hxx" +#include "genericelements.hxx" + +#include <basegfx/polygon/b2dpolypolygontools.hxx> +#include <basegfx/range/b2drange.hxx> + + +namespace pdfi +{ + +void WriterXmlEmitter::visit( HyperlinkElement& elem, const std::list< Element* >::const_iterator& ) +{ + if( elem.Children.empty() ) + return; + + const char* pType = dynamic_cast<DrawElement*>(elem.Children.front()) ? "draw:a" : "text:a"; + + PropertyMap aProps; + aProps[ USTR( "xlink:type" ) ] = USTR( "simple" ); + aProps[ USTR( "xlink:href" ) ] = elem.URI; + aProps[ USTR( "office:target-frame-name" ) ] = USTR( "_blank" ); + aProps[ USTR( "xlink:show" ) ] = USTR( "new" ); + + m_rEmitContext.rEmitter.beginTag( pType, aProps ); + std::list< Element* >::iterator this_it = elem.Children.begin(); + while( this_it !=elem.Children.end() && *this_it != &elem ) + { + (*this_it)->visitedBy( *this, this_it ); + ++this_it; + } + m_rEmitContext.rEmitter.endTag( pType ); +} + +void WriterXmlEmitter::visit( TextElement& elem, const std::list< Element* >::const_iterator& ) +{ + if( ! elem.Text.getLength() ) + return; + + PropertyMap aProps; + if( elem.StyleId != -1 ) + { + aProps[ rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "text:style-name" ) ) ] = + m_rEmitContext.rStyles.getStyleName( elem.StyleId ); + } + + m_rEmitContext.rEmitter.beginTag( "text:span", aProps ); + m_rEmitContext.rEmitter.write( elem.Text.makeStringAndClear() ); + std::list< Element* >::iterator this_it = elem.Children.begin(); + while( this_it !=elem.Children.end() && *this_it != &elem ) + { + (*this_it)->visitedBy( *this, this_it ); + ++this_it; + } + + m_rEmitContext.rEmitter.endTag( "text:span" ); +} + +void WriterXmlEmitter::visit( ParagraphElement& elem, const std::list< Element* >::const_iterator& ) +{ + PropertyMap aProps; + if( elem.StyleId != -1 ) + { + aProps[ USTR( "text:style-name" ) ] = m_rEmitContext.rStyles.getStyleName( elem.StyleId ); + } + const char* pTagType = "text:p"; + if( elem.Type == elem.Headline ) + pTagType = "text:h"; + m_rEmitContext.rEmitter.beginTag( pTagType, aProps ); + + std::list< Element* >::iterator this_it = elem.Children.begin(); + while( this_it !=elem.Children.end() && *this_it != &elem ) + { + (*this_it)->visitedBy( *this, this_it ); + ++this_it; + } + + m_rEmitContext.rEmitter.endTag( pTagType ); +} + +void WriterXmlEmitter::fillFrameProps( DrawElement& rElem, + PropertyMap& rProps, + const EmitContext& rEmitContext ) +{ + double rel_x = rElem.x, rel_y = rElem.y; + + // find anchor type by recursing though parents + Element* pAnchor = rElem.Parent; + while( pAnchor && + ! dynamic_cast<ParagraphElement*>(pAnchor) && + ! dynamic_cast<PageElement*>(pAnchor) ) + { + pAnchor = pAnchor->Parent; + } + if( pAnchor ) + { + if( dynamic_cast<ParagraphElement*>(pAnchor) ) + { + rProps[ USTR( "text:anchor-type" ) ] = + rElem.isCharacter ? USTR( "character" ) : USTR( "paragraph" ); + } + else + { + PageElement* pPage = dynamic_cast<PageElement*>(pAnchor); + rProps[ USTR( "text:anchor-type" ) ] = USTR( "page" ); + rProps[ USTR( "text:anchor-page-number" ) ] = rtl::OUString::valueOf(pPage->PageNumber); + } + rel_x -= pAnchor->x; + rel_y -= pAnchor->y; + } + + rProps[ USTR( "draw:z-index" ) ] = rtl::OUString::valueOf( rElem.ZOrder ); + rProps[ USTR( "draw:style-name" )] = rEmitContext.rStyles.getStyleName( rElem.StyleId ); + rProps[ USTR( "svg:width" ) ] = convertPixelToUnitString( rElem.w ); + rProps[ USTR( "svg:height" ) ] = convertPixelToUnitString( rElem.h ); + + const GraphicsContext& rGC = + rEmitContext.rProcessor.getGraphicsContext( rElem.GCId ); + if( rGC.Transformation.isIdentity() ) + { + if( !rElem.isCharacter ) + { + rProps[ USTR( "svg:x" ) ] = convertPixelToUnitString( rel_x ); + rProps[ USTR( "svg:y" ) ] = convertPixelToUnitString( rel_y ); + } + } + else + { + basegfx::B2DTuple aScale, aTranslation; + double fRotate, fShearX; + + rGC.Transformation.decompose( aScale, aTranslation, fRotate, fShearX ); + + rtl::OUStringBuffer aBuf( 256 ); + + // TODO(F2): general transformation case missing; if implemented, note + // that ODF rotation is oriented the other way + + // build transformation string + if( fShearX != 0.0 ) + { + aBuf.appendAscii( "skewX( " ); + aBuf.append( fShearX ); + aBuf.appendAscii( " )" ); + } + if( fRotate != 0.0 ) + { + if( aBuf.getLength() > 0 ) + aBuf.append( sal_Unicode(' ') ); + aBuf.appendAscii( "rotate( " ); + aBuf.append( -fRotate ); + aBuf.appendAscii( " )" ); + + } + if( ! rElem.isCharacter ) + { + if( aBuf.getLength() > 0 ) + aBuf.append( sal_Unicode(' ') ); + aBuf.appendAscii( "translate( " ); + aBuf.append( convertPixelToUnitString( rel_x ) ); + aBuf.append( sal_Unicode(' ') ); + aBuf.append( convertPixelToUnitString( rel_y ) ); + aBuf.appendAscii( " )" ); + } + + rProps[ USTR( "draw:transform" ) ] = aBuf.makeStringAndClear(); + } +} + +void WriterXmlEmitter::visit( FrameElement& elem, const std::list< Element* >::const_iterator& ) +{ + if( elem.Children.empty() ) + return; + + bool bTextBox = (dynamic_cast<ParagraphElement*>(elem.Children.front()) != NULL); + PropertyMap aFrameProps; + fillFrameProps( elem, aFrameProps, m_rEmitContext ); + m_rEmitContext.rEmitter.beginTag( "draw:frame", aFrameProps ); + if( bTextBox ) + m_rEmitContext.rEmitter.beginTag( "draw:text-box", PropertyMap() ); + + std::list< Element* >::iterator this_it = elem.Children.begin(); + while( this_it !=elem.Children.end() && *this_it != &elem ) + { + (*this_it)->visitedBy( *this, this_it ); + ++this_it; + } + + if( bTextBox ) + m_rEmitContext.rEmitter.endTag( "draw:text-box" ); + m_rEmitContext.rEmitter.endTag( "draw:frame" ); +} + +void WriterXmlEmitter::visit( PolyPolyElement& elem, const std::list< Element* >::const_iterator& ) +{ + elem.updateGeometry(); + /* note: + * aw recommends using 100dth of mm in all respects since the xml import + * (a) is buggy (see issue 37213) + * (b) is optimized for 100dth of mm and does not scale itself then, + * this does not gain us speed but makes for smaller rounding errors since + * the xml importer coordinates are integer based + */ + for (sal_uInt32 i = 0; i< elem.PolyPoly.count(); i++) + { + basegfx::B2DPolygon b2dPolygon; + b2dPolygon = elem.PolyPoly.getB2DPolygon( i ); + + for ( sal_uInt32 j = 0; j< b2dPolygon.count(); j++ ) + { + basegfx::B2DPoint point; + basegfx::B2DPoint nextPoint; + point = b2dPolygon.getB2DPoint( j ); + + basegfx::B2DPoint prevPoint; + prevPoint = b2dPolygon.getPrevControlPoint( j ) ; + + point.setX( convPx2mmPrec2( point.getX() )*100.0 ); + point.setY( convPx2mmPrec2( point.getY() )*100.0 ); + + if ( b2dPolygon.isPrevControlPointUsed( j ) ) + { + prevPoint.setX( convPx2mmPrec2( prevPoint.getX() )*100.0 ); + prevPoint.setY( convPx2mmPrec2( prevPoint.getY() )*100.0 ); + } + + if ( b2dPolygon.isNextControlPointUsed( j ) ) + { + nextPoint = b2dPolygon.getNextControlPoint( j ) ; + nextPoint.setX( convPx2mmPrec2( nextPoint.getX() )*100.0 ); + nextPoint.setY( convPx2mmPrec2( nextPoint.getY() )*100.0 ); + } + + b2dPolygon.setB2DPoint( j, point ); + + if ( b2dPolygon.isPrevControlPointUsed( j ) ) + b2dPolygon.setPrevControlPoint( j , prevPoint ) ; + + if ( b2dPolygon.isNextControlPointUsed( j ) ) + b2dPolygon.setNextControlPoint( j , nextPoint ) ; + } + + elem.PolyPoly.setB2DPolygon( i, b2dPolygon ); + } + + PropertyMap aProps; + fillFrameProps( elem, aProps, m_rEmitContext ); + rtl::OUStringBuffer aBuf( 64 ); + aBuf.appendAscii( "0 0 " ); + aBuf.append( convPx2mmPrec2(elem.w)*100.0 ); + aBuf.append( sal_Unicode(' ') ); + aBuf.append( convPx2mmPrec2(elem.h)*100.0 ); + aProps[ USTR( "svg:viewBox" ) ] = aBuf.makeStringAndClear(); + aProps[ USTR( "svg:d" ) ] = basegfx::tools::exportToSvgD( elem.PolyPoly ); + + m_rEmitContext.rEmitter.beginTag( "draw:path", aProps ); + m_rEmitContext.rEmitter.endTag( "draw:path" ); +} + +void WriterXmlEmitter::visit( ImageElement& elem, const std::list< Element* >::const_iterator& ) +{ + PropertyMap aImageProps; + m_rEmitContext.rEmitter.beginTag( "draw:image", aImageProps ); + m_rEmitContext.rEmitter.beginTag( "office:binary-data", PropertyMap() ); + m_rEmitContext.rImages.writeBase64EncodedStream( elem.Image, m_rEmitContext); + m_rEmitContext.rEmitter.endTag( "office:binary-data" ); + m_rEmitContext.rEmitter.endTag( "draw:image" ); +} + +void WriterXmlEmitter::visit( PageElement& elem, const std::list< Element* >::const_iterator& ) +{ + if( m_rEmitContext.xStatusIndicator.is() ) + m_rEmitContext.xStatusIndicator->setValue( elem.PageNumber ); + + std::list< Element* >::iterator this_it = elem.Children.begin(); + while( this_it !=elem.Children.end() && *this_it != &elem ) + { + (*this_it)->visitedBy( *this, this_it ); + ++this_it; + } +} + +void WriterXmlEmitter::visit( DocumentElement& elem, const std::list< Element* >::const_iterator&) +{ + m_rEmitContext.rEmitter.beginTag( "office:body", PropertyMap() ); + m_rEmitContext.rEmitter.beginTag( "office:text", PropertyMap() ); + + for( std::list< Element* >::iterator it = elem.Children.begin(); it != elem.Children.end(); ++it ) + { + PageElement* pPage = dynamic_cast<PageElement*>(*it); + if( pPage ) + { + // emit only page anchored objects + // currently these are only DrawElement types + for( std::list< Element* >::iterator child_it = pPage->Children.begin(); child_it != pPage->Children.end(); ++child_it ) + { + if( dynamic_cast<DrawElement*>(*child_it) != NULL ) + (*child_it)->visitedBy( *this, child_it ); + } + } + } + + // do not emit page anchored objects, they are emitted before + // (must precede all pages in writer document) currently these are + // only DrawElement types + for( std::list< Element* >::iterator it = elem.Children.begin(); it != elem.Children.end(); ++it ) + { + if( dynamic_cast<DrawElement*>(*it) == NULL ) + (*it)->visitedBy( *this, it ); + } + + m_rEmitContext.rEmitter.endTag( "office:text" ); + m_rEmitContext.rEmitter.endTag( "office:body" ); +} + +///////////////////////////////////////////////////////////////// + +void WriterXmlOptimizer::visit( HyperlinkElement&, const std::list< Element* >::const_iterator& ) +{ +} + +void WriterXmlOptimizer::visit( TextElement&, const std::list< Element* >::const_iterator&) +{ +} + +void WriterXmlOptimizer::visit( FrameElement& elem, const std::list< Element* >::const_iterator& ) +{ + elem.applyToChildren(*this); +} + +void WriterXmlOptimizer::visit( ImageElement&, const std::list< Element* >::const_iterator& ) +{ +} + +void WriterXmlOptimizer::visit( PolyPolyElement& elem, const std::list< Element* >::const_iterator& ) +{ + /* note: optimize two consecutive PolyPolyElements that + * have the same path but one of which is a stroke while + * the other is a fill + */ + if( elem.Parent ) + { + // find following PolyPolyElement in parent's children list + std::list< Element* >::iterator this_it = elem.Parent->Children.begin(); + while( this_it != elem.Parent->Children.end() && *this_it != &elem ) + ++this_it; + + if( this_it != elem.Parent->Children.end() ) + { + std::list< Element* >::iterator next_it = this_it; + if( ++next_it != elem.Parent->Children.end() ) + { + PolyPolyElement* pNext = dynamic_cast<PolyPolyElement*>(*next_it); + if( pNext && pNext->PolyPoly == elem.PolyPoly ) + { + const GraphicsContext& rNextGC = + m_rProcessor.getGraphicsContext( pNext->GCId ); + const GraphicsContext& rThisGC = + m_rProcessor.getGraphicsContext( elem.GCId ); + + if( rThisGC.BlendMode == rNextGC.BlendMode && + rThisGC.Flatness == rNextGC.Flatness && + rThisGC.Transformation == rNextGC.Transformation && + rThisGC.Clip == rNextGC.Clip && + pNext->Action == PATH_STROKE && + (elem.Action == PATH_FILL || elem.Action == PATH_EOFILL) ) + { + GraphicsContext aGC = rThisGC; + aGC.LineJoin = rNextGC.LineJoin; + aGC.LineCap = rNextGC.LineCap; + aGC.LineWidth = rNextGC.LineWidth; + aGC.MiterLimit= rNextGC.MiterLimit; + aGC.DashArray = rNextGC.DashArray; + aGC.LineColor = rNextGC.LineColor; + elem.GCId = m_rProcessor.getGCId( aGC ); + + elem.Action |= pNext->Action; + + elem.Children.splice( elem.Children.end(), pNext->Children ); + elem.Parent->Children.erase( next_it ); + delete pNext; + } + } + } + } + } +} + +void WriterXmlOptimizer::visit( ParagraphElement& elem, const std::list< Element* >::const_iterator& rParentIt) +{ + optimizeTextElements( elem ); + + elem.applyToChildren(*this); + + if( elem.Parent && rParentIt != elem.Parent->Children.end() ) + { + // find if there is a previous paragraph that might be a heading for this one + std::list<Element*>::const_iterator prev = rParentIt; + ParagraphElement* pPrevPara = NULL; + while( prev != elem.Parent->Children.begin() ) + { + --prev; + pPrevPara = dynamic_cast< ParagraphElement* >(*prev); + if( pPrevPara ) + { + /* What constitutes a heading ? current hints are: + * - one line only + * - not too far away from this paragraph (two heading height max ?) + * - font larger or bold + * this is of course incomplete + * FIXME: improve hints for heading + */ + // check for single line + if( pPrevPara->isSingleLined( m_rProcessor ) ) + { + double head_line_height = pPrevPara->getLineHeight( m_rProcessor ); + if( pPrevPara->y + pPrevPara->h + 2*head_line_height > elem.y ) + { + // check for larger font + if( head_line_height > elem.getLineHeight( m_rProcessor ) ) + { + pPrevPara->Type = elem.Headline; + } + else + { + // check whether text of pPrevPara is bold (at least first text element) + // and this para is not bold (dito) + TextElement* pPrevText = pPrevPara->getFirstTextChild(); + TextElement* pThisText = elem.getFirstTextChild(); + if( pPrevText && pThisText ) + { + const FontAttributes& rPrevFont = m_rProcessor.getFont( pPrevText->FontId ); + const FontAttributes& rThisFont = m_rProcessor.getFont( pThisText->FontId ); + if( rPrevFont.isBold && ! rThisFont.isBold ) + pPrevPara->Type = elem.Headline; + } + } + } + } + break; + } + } + } +} + +void WriterXmlOptimizer::visit( PageElement& elem, const std::list< Element* >::const_iterator& ) +{ + if( m_rProcessor.getStatusIndicator().is() ) + m_rProcessor.getStatusIndicator()->setValue( elem.PageNumber ); + + // resolve hyperlinks + elem.resolveHyperlinks(); + + elem.resolveFontStyles( m_rProcessor ); // underlines and such + + // FIXME: until hyperlinks and font effects are adjusted for + // geometrical search handle them before sorting + m_rProcessor.sortElements( &elem ); + + // find paragraphs in text + ParagraphElement* pCurPara = NULL; + std::list< Element* >::iterator page_element, next_page_element; + next_page_element = elem.Children.begin(); + double fCurLineHeight = 0.0; // average height of text items in current para + int nCurLineElements = 0; // number of line contributing elements in current para + double line_left = elem.w, line_right = 0.0; + double column_width = elem.w*0.75; // estimate text width + // TODO: guess columns + while( next_page_element != elem.Children.end() ) + { + page_element = next_page_element++; + ParagraphElement* pPagePara = dynamic_cast<ParagraphElement*>(*page_element); + if( pPagePara ) + { + pCurPara = pPagePara; + // adjust line height and text items + fCurLineHeight = 0.0; + nCurLineElements = 0; + for( std::list< Element* >::iterator it = pCurPara->Children.begin(); + it != pCurPara->Children.end(); ++it ) + { + TextElement* pTestText = dynamic_cast<TextElement*>(*it); + if( pTestText ) + { + fCurLineHeight = (fCurLineHeight*double(nCurLineElements) + pTestText->h)/double(nCurLineElements+1); + nCurLineElements++; + } + } + continue; + } + + HyperlinkElement* pLink = dynamic_cast<HyperlinkElement*>(*page_element); + DrawElement* pDraw = dynamic_cast<DrawElement*>(*page_element); + if( ! pDraw && pLink && ! pLink->Children.empty() ) + pDraw = dynamic_cast<DrawElement*>(pLink->Children.front() ); + if( pDraw ) + { + // insert small drawing objects as character, else leave them page bound + + bool bInsertToParagraph = false; + // first check if this is either inside the paragraph + if( pCurPara && pDraw->y < pCurPara->y + pCurPara->h ) + { + if( pDraw->h < fCurLineHeight * 1.5 ) + { + bInsertToParagraph = true; + fCurLineHeight = (fCurLineHeight*double(nCurLineElements) + pDraw->h)/double(nCurLineElements+1); + nCurLineElements++; + // mark draw element as character + pDraw->isCharacter = true; + } + } + // or perhaps the draw element begins a new paragraph + else if( next_page_element != elem.Children.end() ) + { + TextElement* pText = dynamic_cast<TextElement*>(*next_page_element); + if( ! pText ) + { + ParagraphElement* pPara = dynamic_cast<ParagraphElement*>(*next_page_element); + if( pPara && ! pPara->Children.empty() ) + pText = dynamic_cast<TextElement*>(pPara->Children.front()); + } + if( pText && // check there is a text + pDraw->h < pText->h*1.5 && // and it is approx the same height + // and either upper or lower edge of pDraw is inside text's vertical range + ( ( pDraw->y >= pText->y && pDraw->y <= pText->y+pText->h ) || + ( pDraw->y+pDraw->h >= pText->y && pDraw->y+pDraw->h <= pText->y+pText->h ) + ) + ) + { + bInsertToParagraph = true; + fCurLineHeight = pDraw->h; + nCurLineElements = 1; + line_left = pDraw->x; + line_right = pDraw->x + pDraw->w; + // begin a new paragraph + pCurPara = NULL; + // mark draw element as character + pDraw->isCharacter = true; + } + } + + if( ! bInsertToParagraph ) + { + pCurPara = NULL; + continue; + } + } + + TextElement* pText = dynamic_cast<TextElement*>(*page_element); + if( ! pText && pLink && ! pLink->Children.empty() ) + pText = dynamic_cast<TextElement*>(pLink->Children.front()); + if( pText ) + { + Element* pGeo = pLink ? static_cast<Element*>(pLink) : + static_cast<Element*>(pText); + if( pCurPara ) + { + // there was already a text element, check for a new paragraph + if( nCurLineElements > 0 ) + { + // if the new text is significantly distant from the paragraph + // begin a new paragraph + if( pGeo->y > pCurPara->y+pCurPara->h + fCurLineHeight*0.5 ) + pCurPara = NULL; // insert new paragraph + else if( pGeo->y > (pCurPara->y+pCurPara->h - fCurLineHeight*0.05) ) + { + // new paragraph if either the last line of the paragraph + // was significantly shorter than the paragraph as a whole + if( (line_right - line_left) < pCurPara->w*0.75 ) + pCurPara = NULL; + // or the last line was significantly smaller than the column width + else if( (line_right - line_left) < column_width*0.75 ) + pCurPara = NULL; + } + } + } + // update line height/width + if( pCurPara ) + { + fCurLineHeight = (fCurLineHeight*double(nCurLineElements) + pGeo->h)/double(nCurLineElements+1); + nCurLineElements++; + if( pGeo->x < line_left ) + line_left = pGeo->x; + if( pGeo->x+pGeo->w > line_right ) + line_right = pGeo->x+pGeo->w; + } + else + { + fCurLineHeight = pGeo->h; + nCurLineElements = 1; + line_left = pGeo->x; + line_right = pGeo->x + pGeo->w; + } + } + + // move element to current paragraph + if( ! pCurPara ) // new paragraph, insert one + { + pCurPara = m_rProcessor.getElementFactory()->createParagraphElement( NULL ); + // set parent + pCurPara->Parent = &elem; + //insert new paragraph before current element + page_element = elem.Children.insert( page_element, pCurPara ); + // forward iterator to current element again + ++ page_element; + // update next_element which is now invalid + next_page_element = page_element; + ++ next_page_element; + } + Element* pCurEle = *page_element; + pCurEle->setParent( page_element, pCurPara ); + OSL_ENSURE( !pText || pCurEle == pText || pCurEle == pLink, "paragraph child list in disorder" ); + if( pText || pDraw ) + pCurPara->updateGeometryWith( pCurEle ); + } + + // process children + elem.applyToChildren(*this); + + // find possible header and footer + checkHeaderAndFooter( elem ); +} + +void WriterXmlOptimizer::checkHeaderAndFooter( PageElement& rElem ) +{ + /* indicators for a header: + * - single line paragrah at top of page ( inside 15% page height) + * - at least linheight above the next paragr aph + * + * indicators for a footer likewise: + * - single line paragraph at bottom of page (inside 15% page height) + * - at least lineheight below the previous paragraph + */ + + // detect header + // Note: the following assumes that the pages' chiuldren have been + // sorted geometrically + std::list< Element* >::iterator it = rElem.Children.begin(); + while( it != rElem.Children.end() ) + { + ParagraphElement* pPara = dynamic_cast<ParagraphElement*>(*it); + if( pPara ) + { + if( pPara->y+pPara->h < rElem.h*0.15 && pPara->isSingleLined( m_rProcessor ) ) + { + std::list< Element* >::iterator next_it = it; + ParagraphElement* pNextPara = NULL; + while( ++next_it != rElem.Children.end() && pNextPara == NULL ) + { + pNextPara = dynamic_cast<ParagraphElement*>(*next_it); + } + if( pNextPara && pNextPara->y > pPara->y+pPara->h*2 ) + { + rElem.HeaderElement = pPara; + pPara->Parent = NULL; + rElem.Children.remove( pPara ); + } + } + break; + } + ++it; + } + + // detect footer + std::list< Element* >::reverse_iterator rit = rElem.Children.rbegin(); + while( rit != rElem.Children.rend() ) + { + ParagraphElement* pPara = dynamic_cast<ParagraphElement*>(*rit); + if( pPara ) + { + if( pPara->y > rElem.h*0.85 && pPara->isSingleLined( m_rProcessor ) ) + { + std::list< Element* >::reverse_iterator next_it = rit; + ParagraphElement* pNextPara = NULL; + while( ++next_it != rElem.Children.rend() && pNextPara == NULL ) + { + pNextPara = dynamic_cast<ParagraphElement*>(*next_it); + } + if( pNextPara && pNextPara->y < pPara->y-pPara->h*2 ) + { + rElem.FooterElement = pPara; + pPara->Parent = NULL; + rElem.Children.remove( pPara ); + } + } + break; + } + ++rit; + } +} + +void WriterXmlOptimizer::optimizeTextElements(Element& rParent) +{ + if( rParent.Children.empty() ) // this should not happen + { + OSL_FAIL( "empty paragraph optimized" ); + return; + } + + // concatenate child elements with same font id + std::list< Element* >::iterator next = rParent.Children.begin(); + std::list< Element* >::iterator it = next++; + FrameElement* pFrame = dynamic_cast<FrameElement*>(rParent.Parent); + bool bRotatedFrame = false; + if( pFrame ) + { + const GraphicsContext& rFrameGC = m_rProcessor.getGraphicsContext( pFrame->GCId ); + if( rFrameGC.isRotatedOrSkewed() ) + bRotatedFrame = true; + } + while( next != rParent.Children.end() ) + { + bool bConcat = false; + TextElement* pCur = dynamic_cast<TextElement*>(*it); + if( pCur ) + { + TextElement* pNext = dynamic_cast<TextElement*>(*next); + if( pNext ) + { + const GraphicsContext& rCurGC = m_rProcessor.getGraphicsContext( pCur->GCId ); + const GraphicsContext& rNextGC = m_rProcessor.getGraphicsContext( pNext->GCId ); + + // line and space optimization; works only in strictly horizontal mode + + if( !bRotatedFrame + && ! rCurGC.isRotatedOrSkewed() + && ! rNextGC.isRotatedOrSkewed() + && pNext->Text.charAt( 0 ) != sal_Unicode(' ') + && pCur->Text.getLength() > 0 + && pCur->Text.charAt( pCur->Text.getLength()-1 ) != sal_Unicode(' ') + ) + { + // check for new line in paragraph + if( pNext->y > pCur->y+pCur->h ) + { + // new line begins + // check whether a space would should be inserted or a hyphen removed + sal_Unicode aLastCode = pCur->Text.charAt( pCur->Text.getLength()-1 ); + if( aLastCode == '-' + || aLastCode == 0x2010 + || (aLastCode >= 0x2012 && aLastCode <= 0x2015) + || aLastCode == 0xff0d + ) + { + // cut a hyphen + pCur->Text.setLength( pCur->Text.getLength()-1 ); + } + // append a space unless there is a non breaking hyphen + else if( aLastCode != 0x2011 ) + { + pCur->Text.append( sal_Unicode( ' ' ) ); + } + } + else // we're continuing the same line + { + // check whether a space would should be inserted + // check for a small horizontal offset + if( pCur->x + pCur->w + pNext->h*0.15 < pNext->x ) + { + pCur->Text.append( sal_Unicode(' ') ); + } + } + } + // concatenate consecutive text elements unless there is a + // font or text color or matrix change, leave a new span in that case + if( pCur->FontId == pNext->FontId && + rCurGC.FillColor.Red == rNextGC.FillColor.Red && + rCurGC.FillColor.Green == rNextGC.FillColor.Green && + rCurGC.FillColor.Blue == rNextGC.FillColor.Blue && + rCurGC.FillColor.Alpha == rNextGC.FillColor.Alpha && + rCurGC.Transformation == rNextGC.Transformation + ) + { + pCur->updateGeometryWith( pNext ); + // append text to current element + pCur->Text.append( pNext->Text.getStr(), pNext->Text.getLength() ); + // append eventual children to current element + // and clear children (else the children just + // appended to pCur would be destroyed) + pCur->Children.splice( pCur->Children.end(), pNext->Children ); + // get rid of the now useless element + rParent.Children.erase( next ); + delete pNext; + bConcat = true; + } + } + } + else if( dynamic_cast<HyperlinkElement*>(*it) ) + optimizeTextElements( **it ); + if( bConcat ) + { + next = it; + ++next; + } + else + { + ++it; + ++next; + } + } +} + +void WriterXmlOptimizer::visit( DocumentElement& elem, const std::list< Element* >::const_iterator&) +{ + elem.applyToChildren(*this); +} + +////////////////////////////////////////////////////////////////////////////////// + + +void WriterXmlFinalizer::visit( PolyPolyElement& elem, const std::list< Element* >::const_iterator& ) +{ + // xxx TODO copied from DrawElement + const GraphicsContext& rGC = m_rProcessor.getGraphicsContext(elem.GCId ); + PropertyMap aProps; + aProps[ USTR( "style:family" ) ] = USTR( "graphic" ); + + PropertyMap aGCProps; + + // TODO(F3): proper dash emulation + if( elem.Action & PATH_STROKE ) + { + aGCProps[ USTR("draw:stroke") ] = rGC.DashArray.empty() ? USTR("solid") : USTR("dash"); + aGCProps[ USTR("svg:stroke-color") ] = getColorString( rGC.LineColor ); + if( rGC.LineWidth != 0.0 ) + { + ::basegfx::B2DVector aVec(rGC.LineWidth,0); + aVec *= rGC.Transformation; + + aVec.setX ( convPx2mmPrec2( aVec.getX() )*100.0 ); + aVec.setY ( convPx2mmPrec2( aVec.getY() )*100.0 ); + + aGCProps[ USTR("svg:stroke-width") ] = rtl::OUString::valueOf( aVec.getLength() ); + } + } + else + { + aGCProps[ USTR("draw:stroke") ] = USTR("none"); + } + + // TODO(F1): check whether stuff could be emulated by gradient/bitmap/hatch + if( elem.Action & (PATH_FILL | PATH_EOFILL) ) + { + aGCProps[ USTR("draw:fill") ] = USTR("solid"); + aGCProps[ USTR("draw:fill-color") ] = getColorString( rGC.FillColor ); + } + else + { + aGCProps[ USTR("draw:fill") ] = USTR("none"); + } + + StyleContainer::Style aStyle( "style:style", aProps ); + StyleContainer::Style aSubStyle( "style:graphic-properties", aGCProps ); + aStyle.SubStyles.push_back( &aSubStyle ); + + elem.StyleId = m_rStyleContainer.getStyleId( aStyle ); +} + +void WriterXmlFinalizer::visit( HyperlinkElement&, const std::list< Element* >::const_iterator& ) +{ +} + +void WriterXmlFinalizer::visit( TextElement& elem, const std::list< Element* >::const_iterator& ) +{ + const FontAttributes& rFont = m_rProcessor.getFont( elem.FontId ); + PropertyMap aProps; + aProps[ USTR( "style:family" ) ] = USTR( "text" ); + + PropertyMap aFontProps; + + // family name + aFontProps[ USTR( "fo:font-family" ) ] = rFont.familyName; + // bold + if( rFont.isBold ) + { + aFontProps[ USTR( "fo:font-weight" ) ] = USTR( "bold" ); + aFontProps[ USTR( "fo:font-weight-asian" ) ] = USTR( "bold" ); + aFontProps[ USTR( "fo:font-weight-complex" ) ] = USTR( "bold" ); + } + // italic + if( rFont.isItalic ) + { + aFontProps[ USTR( "fo:font-style" ) ] = USTR( "italic" ); + aFontProps[ USTR( "fo:font-style-asian" ) ] = USTR( "italic" ); + aFontProps[ USTR( "fo:font-style-complex" ) ] = USTR( "italic" ); + } + // underline + if( rFont.isUnderline ) + { + aFontProps[ USTR( "style:text-underline-style" ) ] = USTR( "solid" ); + aFontProps[ USTR( "style:text-underline-width" ) ] = USTR( "auto" ); + aFontProps[ USTR( "style:text-underline-color" ) ] = USTR( "font-color" ); + } + // outline + if( rFont.isOutline ) + { + aFontProps[ USTR( "style:text-outline" ) ] = USTR( "true" ); + } + // size + rtl::OUStringBuffer aBuf( 32 ); + aBuf.append( rFont.size*72/PDFI_OUTDEV_RESOLUTION ); + aBuf.appendAscii( "pt" ); + rtl::OUString aFSize = aBuf.makeStringAndClear(); + aFontProps[ USTR( "fo:font-size" ) ] = aFSize; + aFontProps[ USTR( "style:font-size-asian" ) ] = aFSize; + aFontProps[ USTR( "style:font-size-complex" ) ] = aFSize; + // color + const GraphicsContext& rGC = m_rProcessor.getGraphicsContext( elem.GCId ); + aFontProps[ USTR( "fo:color" ) ] = getColorString( rFont.isOutline ? rGC.LineColor : rGC.FillColor ); + + StyleContainer::Style aStyle( "style:style", aProps ); + StyleContainer::Style aSubStyle( "style:text-properties", aFontProps ); + aStyle.SubStyles.push_back( &aSubStyle ); + elem.StyleId = m_rStyleContainer.getStyleId( aStyle ); +} + +void WriterXmlFinalizer::visit( ParagraphElement& elem, const std::list< Element* >::const_iterator& rParentIt ) +{ + PropertyMap aParaProps; + + if( elem.Parent ) + { + // check for center alignement + // criterion: paragraph is small relative to parent and distributed around its center + double p_x = elem.Parent->x; + double p_y = elem.Parent->y; + double p_w = elem.Parent->w; + double p_h = elem.Parent->h; + + PageElement* pPage = dynamic_cast<PageElement*>(elem.Parent); + if( pPage ) + { + p_x += pPage->LeftMargin; + p_y += pPage->TopMargin; + p_w -= pPage->LeftMargin+pPage->RightMargin; + p_h -= pPage->TopMargin+pPage->BottomMargin; + } + bool bIsCenter = false; + if( elem.w < ( p_w/2) ) + { + double delta = elem.w/4; + // allow very small paragraphs to deviate a little more + // relative to parent's center + if( elem.w < p_w/8 ) + delta = elem.w; + if( fabs( elem.x+elem.w/2 - ( p_x+ p_w/2) ) < delta || + (pPage && fabs( elem.x+elem.w/2 - (pPage->x + pPage->w/2) ) < delta) ) + { + bIsCenter = true; + aParaProps[ USTR( "fo:text-align" ) ] = USTR( "center" ); + } + } + if( ! bIsCenter && elem.x > p_x + p_w/10 ) + { + // indent + rtl::OUStringBuffer aBuf( 32 ); + aBuf.append( convPx2mm( elem.x - p_x ) ); + aBuf.appendAscii( "mm" ); + aParaProps[ USTR( "fo:margin-left" ) ] = aBuf.makeStringAndClear(); + } + + // check whether to leave some space to next paragraph + // find wether there is a next paragraph + std::list< Element* >::const_iterator it = rParentIt; + const ParagraphElement* pNextPara = NULL; + while( ++it != elem.Parent->Children.end() && ! pNextPara ) + pNextPara = dynamic_cast< const ParagraphElement* >(*it); + if( pNextPara ) + { + if( pNextPara->y - (elem.y+elem.h) > convmm2Px( 10 ) ) + { + rtl::OUStringBuffer aBuf( 32 ); + aBuf.append( convPx2mm( pNextPara->y - (elem.y+elem.h) ) ); + aBuf.appendAscii( "mm" ); + aParaProps[ USTR( "fo:margin-bottom" ) ] = aBuf.makeStringAndClear(); + } + } + } + + if( ! aParaProps.empty() ) + { + PropertyMap aProps; + aProps[ USTR( "style:family" ) ] = USTR( "paragraph" ); + StyleContainer::Style aStyle( "style:style", aProps ); + StyleContainer::Style aSubStyle( "style:paragraph-properties", aParaProps ); + aStyle.SubStyles.push_back( &aSubStyle ); + elem.StyleId = m_rStyleContainer.getStyleId( aStyle ); + } + + elem.applyToChildren(*this); +} + +void WriterXmlFinalizer::visit( FrameElement& elem, const std::list< Element* >::const_iterator&) +{ + PropertyMap aProps; + aProps[ USTR( "style:family" ) ] = USTR( "graphic" ); + + PropertyMap aGCProps; + + aGCProps[ USTR("draw:stroke") ] = USTR("none"); + aGCProps[ USTR("draw:fill") ] = USTR("none"); + + StyleContainer::Style aStyle( "style:style", aProps ); + StyleContainer::Style aSubStyle( "style:graphic-properties", aGCProps ); + aStyle.SubStyles.push_back( &aSubStyle ); + + elem.StyleId = m_rStyleContainer.getStyleId( aStyle ); + elem.applyToChildren(*this); +} + +void WriterXmlFinalizer::visit( ImageElement&, const std::list< Element* >::const_iterator& ) +{ +} + +void WriterXmlFinalizer::setFirstOnPage( ParagraphElement& rElem, + StyleContainer& rStyles, + const rtl::OUString& rMasterPageName ) +{ + PropertyMap aProps; + if( rElem.StyleId != -1 ) + { + const PropertyMap* pProps = rStyles.getProperties( rElem.StyleId ); + if( pProps ) + aProps = *pProps; + } + + aProps[ USTR( "style:family" ) ] = USTR( "paragraph" ); + aProps[ USTR( "style:master-page-name" ) ] = rMasterPageName; + + if( rElem.StyleId != -1 ) + rElem.StyleId = rStyles.setProperties( rElem.StyleId, aProps ); + else + { + StyleContainer::Style aStyle( "style:style", aProps ); + rElem.StyleId = rStyles.getStyleId( aStyle ); + } +} + +void WriterXmlFinalizer::visit( PageElement& elem, const std::list< Element* >::const_iterator& ) +{ + if( m_rProcessor.getStatusIndicator().is() ) + m_rProcessor.getStatusIndicator()->setValue( elem.PageNumber ); + + // transform from pixel to mm + double page_width = convPx2mm( elem.w ), page_height = convPx2mm( elem.h ); + + // calculate page margins out of the relevant children (paragraphs) + elem.TopMargin = elem.h, elem.BottomMargin = 0, elem.LeftMargin = elem.w, elem.RightMargin = 0; + // first element should be a paragraphy + ParagraphElement* pFirstPara = NULL; + for( std::list< Element* >::const_iterator it = elem.Children.begin(); it != elem.Children.end(); ++it ) + { + if( dynamic_cast<ParagraphElement*>( *it ) ) + { + if( (*it)->x < elem.LeftMargin ) + elem.LeftMargin = (*it)->x; + if( (*it)->y < elem.TopMargin ) + elem.TopMargin = (*it)->y; + if( (*it)->x + (*it)->w > elem.w - elem.RightMargin ) + elem.RightMargin = elem.w - ((*it)->x + (*it)->w); + if( (*it)->y + (*it)->h > elem.h - elem.BottomMargin ) + elem.BottomMargin = elem.h - ((*it)->y + (*it)->h); + if( ! pFirstPara ) + pFirstPara = dynamic_cast<ParagraphElement*>( *it ); + } + } + if( elem.HeaderElement && elem.HeaderElement->y < elem.TopMargin ) + elem.TopMargin = elem.HeaderElement->y; + if( elem.FooterElement && elem.FooterElement->y+elem.FooterElement->h > elem.h - elem.BottomMargin ) + elem.BottomMargin = elem.h - (elem.FooterElement->y + elem.FooterElement->h); + + // transform margins to mm + double left_margin = convPx2mm( elem.LeftMargin ); + double right_margin = convPx2mm( elem.RightMargin ); + double top_margin = convPx2mm( elem.TopMargin ); + double bottom_margin = convPx2mm( elem.BottomMargin ); + if( ! pFirstPara ) + { + // use default page margins + left_margin = 10; + right_margin = 10; + top_margin = 10; + bottom_margin = 10; + } + + // round left/top margin to nearest mm + left_margin = rtl_math_round( left_margin, 0, rtl_math_RoundingMode_Floor ); + top_margin = rtl_math_round( top_margin, 0, rtl_math_RoundingMode_Floor ); + // round (fuzzy) right/bottom margin to nearest cm + right_margin = rtl_math_round( right_margin, right_margin >= 10 ? -1 : 0, rtl_math_RoundingMode_Floor ); + bottom_margin = rtl_math_round( bottom_margin, bottom_margin >= 10 ? -1 : 0, rtl_math_RoundingMode_Floor ); + + // set reasonable default in case of way too large margins + // e.g. no paragraph case + if( left_margin > page_width/2.0 - 10 ) + left_margin = 10; + if( right_margin > page_width/2.0 - 10 ) + right_margin = 10; + if( top_margin > page_height/2.0 - 10 ) + top_margin = 10; + if( bottom_margin > page_height/2.0 - 10 ) + bottom_margin = 10; + + // catch the weird cases + if( left_margin < 0 ) + left_margin = 0; + if( right_margin < 0 ) + right_margin = 0; + if( top_margin < 0 ) + top_margin = 0; + if( bottom_margin < 0 ) + bottom_margin = 0; + + // widely differing margins are unlikely to be correct + if( right_margin > left_margin*1.5 ) + right_margin = left_margin; + + elem.LeftMargin = convmm2Px( left_margin ); + elem.RightMargin = convmm2Px( right_margin ); + elem.TopMargin = convmm2Px( top_margin ); + elem.BottomMargin = convmm2Px( bottom_margin ); + + // get styles for paragraphs + PropertyMap aPageProps; + PropertyMap aPageLayoutProps; + rtl::OUStringBuffer aBuf( 64 ); + aPageLayoutProps[ USTR( "fo:page-width" ) ] = unitMMString( page_width ); + aPageLayoutProps[ USTR( "fo:page-height" ) ] = unitMMString( page_height ); + aPageLayoutProps[ USTR( "style:print-orientation" ) ] + = elem.w < elem.h ? USTR( "portrait" ) : USTR( "landscape" ); + aPageLayoutProps[ USTR( "fo:margin-top" ) ] = unitMMString( top_margin ); + aPageLayoutProps[ USTR( "fo:margin-bottom" ) ] = unitMMString( bottom_margin ); + aPageLayoutProps[ USTR( "fo:margin-left" ) ] = unitMMString( left_margin ); + aPageLayoutProps[ USTR( "fo:margin-right" ) ] = unitMMString( right_margin ); + aPageLayoutProps[ USTR( "style:writing-mode" ) ]= USTR( "lr-tb" ); + + StyleContainer::Style aStyle( "style:page-layout", aPageProps); + StyleContainer::Style aSubStyle( "style:page-layout-properties", aPageLayoutProps); + aStyle.SubStyles.push_back(&aSubStyle); + sal_Int32 nPageStyle = m_rStyleContainer.impl_getStyleId( aStyle, false ); + + // create master page + rtl::OUString aMasterPageLayoutName = m_rStyleContainer.getStyleName( nPageStyle ); + aPageProps[ USTR( "style:page-layout-name" ) ] = aMasterPageLayoutName; + StyleContainer::Style aMPStyle( "style:master-page", aPageProps ); + StyleContainer::Style aHeaderStyle( "style:header", PropertyMap() ); + StyleContainer::Style aFooterStyle( "style:footer", PropertyMap() ); + if( elem.HeaderElement ) + { + elem.HeaderElement->visitedBy( *this, std::list<Element*>::iterator() ); + aHeaderStyle.ContainedElement = elem.HeaderElement; + aMPStyle.SubStyles.push_back( &aHeaderStyle ); + } + if( elem.FooterElement ) + { + elem.FooterElement->visitedBy( *this, std::list<Element*>::iterator() ); + aFooterStyle.ContainedElement = elem.FooterElement; + aMPStyle.SubStyles.push_back( &aFooterStyle ); + } + elem.StyleId = m_rStyleContainer.impl_getStyleId( aMPStyle,false ); + + + rtl::OUString aMasterPageName = m_rStyleContainer.getStyleName( elem.StyleId ); + + // create styles for children + elem.applyToChildren(*this); + + // no paragraph or other elements before the first paragraph + if( ! pFirstPara ) + { + pFirstPara = m_rProcessor.getElementFactory()->createParagraphElement( NULL ); + pFirstPara->Parent = &elem; + elem.Children.push_front( pFirstPara ); + } + setFirstOnPage(*pFirstPara, m_rStyleContainer, aMasterPageName); +} + +void WriterXmlFinalizer::visit( DocumentElement& elem, const std::list< Element* >::const_iterator& ) +{ + elem.applyToChildren(*this); +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |