/* -*- 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 "style.hxx"
#include "writertreevisiting.hxx"
#include <genericelements.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <basegfx/range/b2drange.hxx>
#include <config_global.h>
#include <osl/diagnose.h>
using namespace ::com::sun::star;
namespace pdfi
{
void WriterXmlEmitter::visit( HyperlinkElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
if( elem.Children.empty() )
return;
const char* pType = dynamic_cast<DrawElement*>(elem.Children.front().get()) ? "draw:a" : "text:a";
PropertyMap aProps;
aProps[ "xlink:type" ] = "simple";
aProps[ "xlink:href" ] = elem.URI;
aProps[ "office:target-frame-name" ] = "_blank";
aProps[ "xlink:show" ] = "new";
m_rEmitContext.rEmitter.beginTag( pType, aProps );
auto this_it = elem.Children.begin();
while( this_it != elem.Children.end() && this_it->get() != &elem )
{
(*this_it)->visitedBy( *this, this_it );
++this_it;
}
m_rEmitContext.rEmitter.endTag( pType );
}
void WriterXmlEmitter::visit( TextElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
if( elem.Text.isEmpty() )
return;
PropertyMap aProps;
if( elem.StyleId != -1 )
{
aProps[ OUString( "text:style-name" ) ] =
m_rEmitContext.rStyles.getStyleName( elem.StyleId );
}
m_rEmitContext.rEmitter.beginTag( "text:span", aProps );
m_rEmitContext.rEmitter.write( elem.Text.makeStringAndClear() );
auto this_it = elem.Children.begin();
while( this_it != elem.Children.end() && this_it->get() != &elem )
{
(*this_it)->visitedBy( *this, this_it );
++this_it;
}
m_rEmitContext.rEmitter.endTag( "text:span" );
}
void WriterXmlEmitter::visit( ParagraphElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
PropertyMap aProps;
if( elem.StyleId != -1 )
{
aProps[ "text:style-name" ] = m_rEmitContext.rStyles.getStyleName( elem.StyleId );
}
const char* pTagType = "text:p";
if( elem.Type == ParagraphElement::Headline )
pTagType = "text:h";
m_rEmitContext.rEmitter.beginTag( pTagType, aProps );
auto this_it = elem.Children.begin();
while( this_it != elem.Children.end() && this_it->get() != &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[ "text:anchor-type" ] = rElem.isCharacter
? OUString("character") : OUString("paragraph");
}
else
{
PageElement* pPage = dynamic_cast<PageElement*>(pAnchor);
rProps[ "text:anchor-type" ] = "page";
rProps[ "text:anchor-page-number" ] = OUString::number(pPage->PageNumber);
}
rel_x -= pAnchor->x;
rel_y -= pAnchor->y;
}
rProps[ "draw:z-index" ] = OUString::number( rElem.ZOrder );
rProps[ "draw:style-name"] = rEmitContext.rStyles.getStyleName( rElem.StyleId );
rProps[ "svg:width" ] = convertPixelToUnitString( rElem.w );
rProps[ "svg:height" ] = convertPixelToUnitString( rElem.h );
const GraphicsContext& rGC =
rEmitContext.rProcessor.getGraphicsContext( rElem.GCId );
if( rGC.Transformation.isIdentity() )
{
if( !rElem.isCharacter )
{
rProps[ "svg:x" ] = convertPixelToUnitString( rel_x );
rProps[ "svg:y" ] = convertPixelToUnitString( rel_y );
}
}
else
{
basegfx::B2DTuple aScale, aTranslation;
double fRotate, fShearX;
rGC.Transformation.decompose( aScale, aTranslation, fRotate, fShearX );
OUStringBuffer aBuf( 256 );
// TODO(F2): general transformation case missing; if implemented, note
// that ODF rotation is oriented the other way
// build transformation string
if (rElem.MirrorVertical)
{
// At some point, rElem.h may start arriving positive,
// so use robust adjusting math
rel_y -= std::abs(rElem.h);
if (!aBuf.isEmpty())
aBuf.append(' ');
aBuf.append("scale( 1.0 -1.0 )");
}
if( fShearX != 0.0 )
{
aBuf.append( "skewX( " );
aBuf.append( fShearX );
aBuf.append( " )" );
}
if( fRotate != 0.0 )
{
if( !aBuf.isEmpty() )
aBuf.append( ' ' );
aBuf.append( "rotate( " );
aBuf.append( -fRotate );
aBuf.append( " )" );
}
if( ! rElem.isCharacter )
{
if( !aBuf.isEmpty() )
aBuf.append( ' ' );
aBuf.append( "translate( " );
aBuf.append( convertPixelToUnitString( rel_x ) );
aBuf.append( ' ' );
aBuf.append( convertPixelToUnitString( rel_y ) );
aBuf.append( " )" );
}
rProps[ "draw:transform" ] = aBuf.makeStringAndClear();
}
}
void WriterXmlEmitter::visit( FrameElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
if( elem.Children.empty() )
return;
bool bTextBox = (dynamic_cast<ParagraphElement*>(elem.Children.front().get()) != nullptr);
PropertyMap aFrameProps;
fillFrameProps( elem, aFrameProps, m_rEmitContext );
m_rEmitContext.rEmitter.beginTag( "draw:frame", aFrameProps );
if( bTextBox )
m_rEmitContext.rEmitter.beginTag( "draw:text-box", PropertyMap() );
auto this_it = elem.Children.begin();
while( this_it != elem.Children.end() && this_it->get() != &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< std::unique_ptr<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 );
OUStringBuffer aBuf( 64 );
aBuf.append( "0 0 " );
aBuf.append( convPx2mmPrec2(elem.w)*100.0 );
aBuf.append( ' ' );
aBuf.append( convPx2mmPrec2(elem.h)*100.0 );
aProps[ "svg:viewBox" ] = aBuf.makeStringAndClear();
aProps[ "svg:d" ] = basegfx::utils::exportToSvgD( elem.PolyPoly, true, true, false );
m_rEmitContext.rEmitter.beginTag( "draw:path", aProps );
m_rEmitContext.rEmitter.endTag( "draw:path" );
}
void WriterXmlEmitter::visit( ImageElement& elem, const std::list< std::unique_ptr<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< std::unique_ptr<Element> >::const_iterator& )
{
if( m_rEmitContext.xStatusIndicator.is() )
m_rEmitContext.xStatusIndicator->setValue( elem.PageNumber );
auto this_it = elem.Children.begin();
while( this_it != elem.Children.end() && this_it->get() != &elem )
{
(*this_it)->visitedBy( *this, this_it );
++this_it;
}
}
void WriterXmlEmitter::visit( DocumentElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator&)
{
m_rEmitContext.rEmitter.beginTag( "office:body", PropertyMap() );
m_rEmitContext.rEmitter.beginTag( "office:text", PropertyMap() );
for( auto it = elem.Children.begin(); it != elem.Children.end(); ++it )
{
PageElement* pPage = dynamic_cast<PageElement*>(it->get());
if( pPage )
{
// emit only page anchored objects
// currently these are only DrawElement types
for( auto child_it = pPage->Children.begin(); child_it != pPage->Children.end(); ++child_it )
{
if( dynamic_cast<DrawElement*>(child_it->get()) != nullptr )
(*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( auto it = elem.Children.begin(); it != elem.Children.end(); ++it )
{
if( dynamic_cast<DrawElement*>(it->get()) == nullptr )
(*it)->visitedBy( *this, it );
}
m_rEmitContext.rEmitter.endTag( "office:text" );
m_rEmitContext.rEmitter.endTag( "office:body" );
}
void WriterXmlOptimizer::visit( HyperlinkElement&, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
}
void WriterXmlOptimizer::visit( TextElement&, const std::list< std::unique_ptr<Element> >::const_iterator&)
{
}
void WriterXmlOptimizer::visit( FrameElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
elem.applyToChildren(*this);
}
void WriterXmlOptimizer::visit( ImageElement&, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
}
void WriterXmlOptimizer::visit( PolyPolyElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator& elemIt )
{
/* 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 )
return;
// find following PolyPolyElement in parent's children list
if( elemIt == elem.Parent->Children.end() )
return;
auto next_it = elemIt;
++next_it;
if( next_it == elem.Parent->Children.end() )
return;
PolyPolyElement* pNext = dynamic_cast<PolyPolyElement*>(next_it->get());
if( !pNext || pNext->PolyPoly != elem.PolyPoly )
return;
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 );
// workaround older compilers that do not have std::list::erase(const_iterator)
#if HAVE_BROKEN_CONST_ITERATORS
auto tmpIt = elem.Parent->Children.begin();
std::advance(tmpIt, std::distance(elem.Parent->Children.cbegin(), next_it));
elem.Parent->Children.erase(tmpIt);
#else
elem.Parent->Children.erase(next_it);
#endif
}
}
void WriterXmlOptimizer::visit( ParagraphElement& elem, const std::list< std::unique_ptr<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
auto prev = rParentIt;
ParagraphElement* pPrevPara = nullptr;
while( prev != elem.Parent->Children.begin() )
{
--prev;
pPrevPara = dynamic_cast< ParagraphElement* >(prev->get());
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 = ParagraphElement::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 = ParagraphElement::Headline;
}
}
}
}
break;
}
}
}
}
void WriterXmlOptimizer::visit( PageElement& elem, const std::list< std::unique_ptr<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 = nullptr;
std::list< std::unique_ptr<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->get());
if( pPagePara )
{
pCurPara = pPagePara;
// adjust line height and text items
fCurLineHeight = 0.0;
nCurLineElements = 0;
for( auto it = pCurPara->Children.begin();
it != pCurPara->Children.end(); ++it )
{
TextElement* pTestText = dynamic_cast<TextElement*>(it->get());
if( pTestText )
{
fCurLineHeight = (fCurLineHeight*double(nCurLineElements) + pTestText->h)/double(nCurLineElements+1);
nCurLineElements++;
}
}
continue;
}
HyperlinkElement* pLink = dynamic_cast<HyperlinkElement*>(page_element->get());
DrawElement* pDraw = dynamic_cast<DrawElement*>(page_element->get());
if( ! pDraw && pLink && ! pLink->Children.empty() )
pDraw = dynamic_cast<DrawElement*>(pLink->Children.front().get() );
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->get());
if( ! pText )
{
ParagraphElement* pPara = dynamic_cast<ParagraphElement*>(next_page_element->get());
if( pPara && ! pPara->Children.empty() )
pText = dynamic_cast<TextElement*>(pPara->Children.front().get());
}
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 = nullptr;
// mark draw element as character
pDraw->isCharacter = true;
}
}
if( ! bInsertToParagraph )
{
pCurPara = nullptr;
continue;
}
}
TextElement* pText = dynamic_cast<TextElement*>(page_element->get());
if( ! pText && pLink && ! pLink->Children.empty() )
pText = dynamic_cast<TextElement*>(pLink->Children.front().get());
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 = nullptr; // 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 = nullptr;
// or the last line was significantly smaller than the column width
else if( (line_right - line_left) < column_width*0.75 )
pCurPara = nullptr;
}
}
}
// 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 = ElementFactory::createParagraphElement( nullptr );
// set parent
pCurPara->Parent = &elem;
//insert new paragraph before current element
page_element = elem.Children.insert( page_element, std::unique_ptr<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->get();
Element::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 lineheight above the next paragraph
*
* 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' children have been
// sorted geometrically
auto it = rElem.Children.begin();
while( it != rElem.Children.end() )
{
ParagraphElement* pPara = dynamic_cast<ParagraphElement*>(it->get());
if( pPara )
{
if( pPara->y+pPara->h < rElem.h*0.15 && pPara->isSingleLined( m_rProcessor ) )
{
auto next_it = it;
ParagraphElement* pNextPara = nullptr;
while( ++next_it != rElem.Children.end() && pNextPara == nullptr )
{
pNextPara = dynamic_cast<ParagraphElement*>(next_it->get());
}
if( pNextPara && pNextPara->y > pPara->y+pPara->h*2 )
{
rElem.HeaderElement = std::move(*it);
pPara->Parent = nullptr;
rElem.Children.erase( it );
}
}
break;
}
++it;
}
// detect footer
std::list< std::unique_ptr<Element> >::reverse_iterator rit = rElem.Children.rbegin();
while( rit != rElem.Children.rend() )
{
ParagraphElement* pPara = dynamic_cast<ParagraphElement*>(rit->get());
if( pPara )
{
if( pPara->y > rElem.h*0.85 && pPara->isSingleLined( m_rProcessor ) )
{
std::list< std::unique_ptr<Element> >::reverse_iterator next_it = rit;
ParagraphElement* pNextPara = nullptr;
while( ++next_it != rElem.Children.rend() && pNextPara == nullptr )
{
pNextPara = dynamic_cast<ParagraphElement*>(next_it->get());
}
if( pNextPara && pNextPara->y < pPara->y-pPara->h*2 )
{
rElem.FooterElement = std::move(*rit);
pPara->Parent = nullptr;
rElem.Children.erase( std::next(rit).base() );
}
}
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
auto next = rParent.Children.begin();
auto 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->get());
if( pCur )
{
TextElement* pNext = dynamic_cast<TextElement*>(next->get());
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.isEmpty()
&& pNext->Text[0] != ' '
&& ! pCur->Text.isEmpty()
&& pCur->Text[pCur->Text.getLength() - 1] != ' '
)
{
// 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[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( ' ' );
}
}
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( ' ' );
}
}
}
// 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 );
// 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 );
bConcat = true;
}
}
}
else if( dynamic_cast<HyperlinkElement*>(it->get()) )
optimizeTextElements( **it );
if( bConcat )
{
next = it;
++next;
}
else
{
++it;
++next;
}
}
}
void WriterXmlOptimizer::visit( DocumentElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator&)
{
elem.applyToChildren(*this);
}
void WriterXmlFinalizer::visit( PolyPolyElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
// xxx TODO copied from DrawElement
const GraphicsContext& rGC = m_rProcessor.getGraphicsContext(elem.GCId );
PropertyMap aProps;
aProps[ "style:family" ] = "graphic";
PropertyMap aGCProps;
if (elem.Action & PATH_STROKE)
{
double scale = GetAverageTransformationScale(rGC.Transformation);
if (rGC.DashArray.size() < 2)
{
aGCProps[ "draw:stroke" ] = "solid";
}
else
{
PropertyMap props;
FillDashStyleProps(props, rGC.DashArray, scale);
StyleContainer::Style style("draw:stroke-dash", props);
aGCProps[ "draw:stroke" ] = "dash";
aGCProps[ "draw:stroke-dash" ] =
m_rStyleContainer.getStyleName(
m_rStyleContainer.getStyleId(style));
}
aGCProps[ "svg:stroke-color" ] = getColorString(rGC.LineColor);
aGCProps[ "svg:stroke-width" ] = convertPixelToUnitString(rGC.LineWidth * scale);
aGCProps[ "draw:stroke-linejoin" ] = rGC.GetLineJoinString();
aGCProps[ "svg:stroke-linecap" ] = rGC.GetLineCapString();
}
else
{
aGCProps[ "draw:stroke" ] = "none";
}
// TODO(F1): check whether stuff could be emulated by gradient/bitmap/hatch
if( elem.Action & (PATH_FILL | PATH_EOFILL) )
{
aGCProps[ "draw:fill" ] = "solid";
aGCProps[ "draw:fill-color" ] = getColorString( rGC.FillColor );
}
else
{
aGCProps[ "draw:fill" ] = "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< std::unique_ptr<Element> >::const_iterator& )
{
}
void WriterXmlFinalizer::visit( TextElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
const FontAttributes& rFont = m_rProcessor.getFont( elem.FontId );
PropertyMap aProps;
aProps[ "style:family" ] = "text";
PropertyMap aFontProps;
// family name
aFontProps[ "fo:font-family" ] = rFont.familyName;
// bold
if( rFont.isBold )
{
aFontProps[ "fo:font-weight" ] = "bold";
aFontProps[ "fo:font-weight-asian" ] = "bold";
aFontProps[ "fo:font-weight-complex" ] = "bold";
}
// italic
if( rFont.isItalic )
{
aFontProps[ "fo:font-style" ] = "italic";
aFontProps[ "fo:font-style-asian" ] = "italic";
aFontProps[ "fo:font-style-complex" ] = "italic";
}
// underline
if( rFont.isUnderline )
{
aFontProps[ "style:text-underline-style" ] = "solid";
aFontProps[ "style:text-underline-width" ] = "auto";
aFontProps[ "style:text-underline-color" ] = "font-color";
}
// outline
if( rFont.isOutline )
{
aFontProps[ "style:text-outline" ] = "true";
}
// size
OUStringBuffer aBuf( 32 );
aBuf.append( rFont.size*72/PDFI_OUTDEV_RESOLUTION );
aBuf.append( "pt" );
OUString aFSize = aBuf.makeStringAndClear();
aFontProps[ "fo:font-size" ] = aFSize;
aFontProps[ "style:font-size-asian" ] = aFSize;
aFontProps[ "style:font-size-complex" ] = aFSize;
// color
const GraphicsContext& rGC = m_rProcessor.getGraphicsContext( elem.GCId );
aFontProps[ "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< std::unique_ptr<Element> >::const_iterator& rParentIt )
{
PropertyMap aParaProps;
if( elem.Parent )
{
// check for center alignment
// criterion: paragraph is small relative to parent and distributed around its center
double p_x = elem.Parent->x;
double p_w = elem.Parent->w;
PageElement* pPage = dynamic_cast<PageElement*>(elem.Parent);
if( pPage )
{
p_x += pPage->LeftMargin;
p_w -= pPage->LeftMargin+pPage->RightMargin;
}
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[ "fo:text-align" ] = "center";
}
}
if( ! bIsCenter && elem.x > p_x + p_w/10 )
{
// indent
OUStringBuffer aBuf( 32 );
aBuf.append( convPx2mm( elem.x - p_x ) );
aBuf.append( "mm" );
aParaProps[ "fo:margin-left" ] = aBuf.makeStringAndClear();
}
// check whether to leave some space to next paragraph
// find whether there is a next paragraph
auto it = rParentIt;
const ParagraphElement* pNextPara = nullptr;
while( ++it != elem.Parent->Children.end() && ! pNextPara )
pNextPara = dynamic_cast< const ParagraphElement* >(it->get());
if( pNextPara )
{
if( pNextPara->y - (elem.y+elem.h) > convmm2Px( 10 ) )
{
OUStringBuffer aBuf( 32 );
aBuf.append( convPx2mm( pNextPara->y - (elem.y+elem.h) ) );
aBuf.append( "mm" );
aParaProps[ "fo:margin-bottom" ] = aBuf.makeStringAndClear();
}
}
}
if( ! aParaProps.empty() )
{
PropertyMap aProps;
aProps[ "style:family" ] = "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< std::unique_ptr<Element> >::const_iterator&)
{
PropertyMap aProps;
aProps[ "style:family" ] = "graphic";
PropertyMap aGCProps;
aGCProps[ "draw:stroke" ] = "none";
aGCProps[ "draw:fill" ] = "none";
aGCProps[ "draw:auto-grow-height" ] = "true";
aGCProps[ "draw:auto-grow-width" ] = "true";
aGCProps[ "draw:textarea-horizontal-align" ] = "left";
aGCProps[ "draw:textarea-vertical-align" ] = "top";
aGCProps[ "fo:min-height"] = "0cm";
aGCProps[ "fo:min-width"] = "0cm";
aGCProps[ "fo:padding-top" ] = "0cm";
aGCProps[ "fo:padding-left" ] = "0cm";
aGCProps[ "fo:padding-right" ] = "0cm";
aGCProps[ "fo:padding-bottom" ] = "0cm";
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< std::unique_ptr<Element> >::const_iterator& )
{
}
void WriterXmlFinalizer::setFirstOnPage( ParagraphElement& rElem,
StyleContainer& rStyles,
const OUString& rMasterPageName )
{
PropertyMap aProps;
if( rElem.StyleId != -1 )
{
const PropertyMap* pProps = rStyles.getProperties( rElem.StyleId );
if( pProps )
aProps = *pProps;
}
aProps[ "style:family" ] = "paragraph";
aProps[ "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< std::unique_ptr<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 paragraph
ParagraphElement* pFirstPara = nullptr;
for( auto it = elem.Children.begin(); it != elem.Children.end(); ++it )
{
if( dynamic_cast<ParagraphElement*>( it->get() ) )
{
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->get() );
}
}
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;
aPageLayoutProps[ "fo:page-width" ] = unitMMString( page_width );
aPageLayoutProps[ "fo:page-height" ] = unitMMString( page_height );
aPageLayoutProps[ "style:print-orientation" ]
= elem.w < elem.h ? OUString("portrait") : OUString("landscape");
aPageLayoutProps[ "fo:margin-top" ] = unitMMString( top_margin );
aPageLayoutProps[ "fo:margin-bottom" ] = unitMMString( bottom_margin );
aPageLayoutProps[ "fo:margin-left" ] = unitMMString( left_margin );
aPageLayoutProps[ "fo:margin-right" ] = unitMMString( right_margin );
aPageLayoutProps[ "style:writing-mode" ]= "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
OUString aMasterPageLayoutName = m_rStyleContainer.getStyleName( nPageStyle );
aPageProps[ "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<std::unique_ptr<Element>>::iterator() );
aHeaderStyle.ContainedElement = elem.HeaderElement.get();
aMPStyle.SubStyles.push_back( &aHeaderStyle );
}
if( elem.FooterElement )
{
elem.FooterElement->visitedBy( *this, std::list<std::unique_ptr<Element>>::iterator() );
aFooterStyle.ContainedElement = elem.FooterElement.get();
aMPStyle.SubStyles.push_back( &aFooterStyle );
}
elem.StyleId = m_rStyleContainer.impl_getStyleId( aMPStyle,false );
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 = ElementFactory::createParagraphElement( nullptr );
pFirstPara->Parent = &elem;
elem.Children.push_front( std::unique_ptr<Element>(pFirstPara) );
}
setFirstOnPage(*pFirstPara, m_rStyleContainer, aMasterPageName);
}
void WriterXmlFinalizer::visit( DocumentElement& elem, const std::list< std::unique_ptr<Element> >::const_iterator& )
{
elem.applyToChildren(*this);
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V522 There might be dereferencing of a potential null pointer 'pPage'.