/* -*- 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 <svgdocumenthandler.hxx>
#include <svgtoken.hxx>
#include <svgsvgnode.hxx>
#include <svggnode.hxx>
#include <svganode.hxx>
#include <svgnode.hxx>
#include <svgpathnode.hxx>
#include <svgrectnode.hxx>
#include <svggradientnode.hxx>
#include <svggradientstopnode.hxx>
#include <svgswitchnode.hxx>
#include <svgsymbolnode.hxx>
#include <svgusenode.hxx>
#include <svgcirclenode.hxx>
#include <svgellipsenode.hxx>
#include <svglinenode.hxx>
#include <svgpolynode.hxx>
#include <svgtextnode.hxx>
#include <svgcharacternode.hxx>
#include <svgtspannode.hxx>
#include <svgtrefnode.hxx>
#include <svgtextpathnode.hxx>
#include <svgstylenode.hxx>
#include <svgimagenode.hxx>
#include <svgclippathnode.hxx>
#include <svgfeblendnode.hxx>
#include <svgfecolormatrixnode.hxx>
#include <svgfecompositenode.hxx>
#include <svgfedropshadownode.hxx>
#include <svgfefloodnode.hxx>
#include <svgfeimagenode.hxx>
#include <svgfegaussianblurnode.hxx>
#include <svgfemergenode.hxx>
#include <svgfemergenodenode.hxx>
#include <svgfeoffsetnode.hxx>
#include <svgfilternode.hxx>
#include <svgmasknode.hxx>
#include <svgmarkernode.hxx>
#include <svgpatternnode.hxx>
#include <svgtitledescnode.hxx>
#include <sal/log.hxx>
#include <osl/diagnose.h>
#include <com/sun/star/lang/Locale.hpp>
#include <drawinglayer/primitive2d/textlayoutdevice.hxx>
using namespace com::sun::star;
namespace svgio::svgreader
{
namespace
{
using CharacterNodeHandlerFunc
= svgio::svgreader::SvgCharacterNode*(svgio::svgreader::SvgCharacterNode* pCharNode,
svgio::svgreader::SvgTspanNode* pParentLine,
svgio::svgreader::SvgCharacterNode* pLast);
// clean whitespace in text span
svgio::svgreader::SvgCharacterNode* whiteSpaceHandling(svgio::svgreader::SvgCharacterNode* pCharNode,
svgio::svgreader::SvgTspanNode* pParentLine,
svgio::svgreader::SvgCharacterNode* pLast)
{
pCharNode->setParentLine(pParentLine);
return pCharNode->whiteSpaceHandling(pLast);
}
// set correct widths of text lines
svgio::svgreader::SvgCharacterNode* calcTextLineWidths(svgio::svgreader::SvgCharacterNode* pCharNode,
svgio::svgreader::SvgTspanNode* pParentLine,
svgio::svgreader::SvgCharacterNode* /*pLast*/)
{
if (const SvgStyleAttributes* pSvgStyleAttributes = pCharNode->getSvgStyleAttributes())
{
const drawinglayer::attribute::FontAttribute aFontAttribute(
svgio::svgreader::SvgCharacterNode::getFontAttribute(*pSvgStyleAttributes));
double fFontWidth(pSvgStyleAttributes->getFontSizeNumber().solve(*pCharNode));
double fFontHeight(fFontWidth);
css::lang::Locale aLocale;
drawinglayer::primitive2d::TextLayouterDevice aTextLayouterDevice;
aTextLayouterDevice.setFontAttribute(aFontAttribute, fFontWidth, fFontHeight, aLocale);
double fTextWidth = aTextLayouterDevice.getTextWidth(pCharNode->getText(), 0.0,
pCharNode->getText().getLength());
pParentLine->concatenateTextLineWidth(fTextWidth);
}
return nullptr; // no pLast handling
}
svgio::svgreader::SvgCharacterNode* walkRecursive(svgio::svgreader::SvgNode const* pNode,
svgio::svgreader::SvgTspanNode* pParentLine,
svgio::svgreader::SvgCharacterNode* pLast,
CharacterNodeHandlerFunc* pHandlerFunc)
{
if(pNode)
{
const auto& rChilds = pNode->getChildren();
const sal_uInt32 nCount(rChilds.size());
for(sal_uInt32 a(0); a < nCount; a++)
{
svgio::svgreader::SvgNode* pCandidate = rChilds[a].get();
if(pCandidate)
{
switch(pCandidate->getType())
{
case SVGToken::Character:
{
svgio::svgreader::SvgCharacterNode* pCharNode = static_cast< svgio::svgreader::SvgCharacterNode* >(pCandidate);
pLast = pHandlerFunc(pCharNode, pParentLine, pLast);
break;
}
case SVGToken::Tspan:
{
svgio::svgreader::SvgTspanNode* pTspanNode = static_cast< svgio::svgreader::SvgTspanNode* >(pCandidate);
// If x or y exist it means it's a new line of text
if(!pTspanNode->getX().empty() || !pTspanNode->getY().empty())
pParentLine = pTspanNode;
// recursively handle subhierarchy
pLast = walkRecursive(pCandidate, pParentLine, pLast, pHandlerFunc);
break;
}
case SVGToken::TextPath:
case SVGToken::Tref:
{
// recursively handle subhierarchy
pLast = walkRecursive(pCandidate, pParentLine, pLast, pHandlerFunc);
break;
}
default:
{
OSL_ENSURE(false, "Unexpected token inside SVGTokenText (!)");
break;
}
}
}
}
}
return pLast;
}
} // end anonymous namespace
SvgDocHdl::SvgDocHdl(const OUString& aAbsolutePath)
: maDocument(aAbsolutePath),
mpTarget(nullptr)
{
}
SvgDocHdl::~SvgDocHdl()
{
if (mpTarget)
{
OSL_ENSURE(false, "SvgDocHdl destructed with active target (!)");
while (mpTarget->getParent())
mpTarget = const_cast< SvgNode* >(mpTarget->getParent());
const SvgNodeVector& rOwnedTopLevels = maDocument.getSvgNodeVector();
if (std::none_of(rOwnedTopLevels.begin(), rOwnedTopLevels.end(),
[&](std::unique_ptr<SvgNode> const & p) { return p.get() == mpTarget; }))
delete mpTarget;
}
OSL_ENSURE(maCssContents.empty(), "SvgDocHdl destructed with active css style stack entry (!)");
}
void SvgDocHdl::startDocument( )
{
OSL_ENSURE(!mpTarget, "Already a target at document start (!)");
OSL_ENSURE(maCssContents.empty(), "SvgDocHdl startDocument with active css style stack entry (!)");
}
void SvgDocHdl::endDocument( )
{
OSL_ENSURE(!mpTarget, "Still a target at document end (!)");
OSL_ENSURE(maCssContents.empty(), "SvgDocHdl endDocument with active css style stack entry (!)");
}
void SvgDocHdl::startElement( const OUString& aName, const uno::Reference< xml::sax::XAttributeList >& xAttribs )
{
if(aName.isEmpty())
return;
const SVGToken aSVGToken(StrToSVGToken(aName, false));
switch (aSVGToken)
{
/// structural elements
case SVGToken::Symbol:
{
/// new basic node for Symbol. Content gets scanned, but
/// will not be decomposed (see SvgNode::decomposeSvgNode and bReferenced)
mpTarget = new SvgSymbolNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Switch:
{
/// new node for Switch
mpTarget = new SvgSwitchNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Defs:
case SVGToken::G:
{
/// new node for Defs/G
mpTarget = new SvgGNode(aSVGToken, maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Svg:
{
/// new node for Svg
mpTarget = new SvgSvgNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Use:
{
/// new node for Use
mpTarget = new SvgUseNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::A:
{
/// new node for A
mpTarget = new SvgANode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
/// shape elements
case SVGToken::Circle:
{
/// new node for Circle
mpTarget = new SvgCircleNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Ellipse:
{
/// new node for Ellipse
mpTarget = new SvgEllipseNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Line:
{
/// new node for Line
mpTarget = new SvgLineNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Path:
{
/// new node for Path
mpTarget = new SvgPathNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Polygon:
{
/// new node for Polygon
mpTarget = new SvgPolyNode(aSVGToken, maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Polyline:
{
/// new node for Polyline
mpTarget = new SvgPolyNode(aSVGToken, maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Rect:
{
/// new node for Rect
mpTarget = new SvgRectNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Image:
{
/// new node for Image
mpTarget = new SvgImageNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
/// title and description
case SVGToken::Title:
case SVGToken::Desc:
{
/// new node for Title and/or Desc
mpTarget = new SvgTitleDescNode(aSVGToken, maDocument, mpTarget);
break;
}
/// gradients
case SVGToken::LinearGradient:
case SVGToken::RadialGradient:
{
mpTarget = new SvgGradientNode(aSVGToken, maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
/// gradient stops
case SVGToken::Stop:
{
mpTarget = new SvgGradientStopNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
/// text
case SVGToken::Text:
{
mpTarget = new SvgTextNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Tspan:
{
mpTarget = new SvgTspanNode(aSVGToken, maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Tref:
{
mpTarget = new SvgTrefNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::TextPath:
{
mpTarget = new SvgTextPathNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
/// styles (as stylesheets)
case SVGToken::Style:
{
SvgStyleNode* pNew = new SvgStyleNode(maDocument, mpTarget);
mpTarget = pNew;
// #i125326# there are attributes, read them. This will set isTextCss to false if
// type attribute is different to "text/css"
mpTarget->parseAttributes(xAttribs);
if(pNew->isTextCss())
{
// if it is a Css style, allow reading text between the start and end tag (see
// SvgDocHdl::characters for details)
maCssContents.emplace_back();
}
break;
}
/// structural elements clip-path and mask. Content gets scanned, but
/// will not be decomposed (see SvgNode::decomposeSvgNode and bReferenced)
case SVGToken::ClipPathNode:
{
/// new node for ClipPath
mpTarget = new SvgClipPathNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Mask:
{
/// new node for Mask
mpTarget = new SvgMaskNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeBlend:
{
/// new node for feBlend
mpTarget = new SvgFeBlendNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeColorMatrix:
{
/// new node for feColorMatrix
mpTarget = new SvgFeColorMatrixNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeComposite:
{
/// new node for feComposite
mpTarget = new SvgFeCompositeNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeDropShadow:
{
/// new node for feDropShadow
mpTarget = new SvgFeDropShadowNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeFlood:
{
/// new node for feFlood
mpTarget = new SvgFeFloodNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeImage:
{
/// new node for feImage
mpTarget = new SvgFeImageNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeGaussianBlur:
{
/// new node for feGaussianBlur
mpTarget = new SvgFeGaussianBlurNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeMerge:
{
/// new node for feMerge
mpTarget = new SvgFeMergeNode(aSVGToken, maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeMergeNode:
{
/// new node for feMergeNode
mpTarget = new SvgFeMergeNodeNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::FeOffset:
{
/// new node for feOffset
mpTarget = new SvgFeOffsetNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
case SVGToken::Filter:
{
/// new node for Filter
mpTarget = new SvgFilterNode(aSVGToken, maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
/// structural element marker
case SVGToken::Marker:
{
/// new node for marker
mpTarget = new SvgMarkerNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
/// structural element pattern
case SVGToken::Pattern:
{
/// new node for pattern
mpTarget = new SvgPatternNode(maDocument, mpTarget);
mpTarget->parseAttributes(xAttribs);
break;
}
default:
{
mpTarget = new SvgNode(SVGToken::Unknown, maDocument, mpTarget);
break;
}
}
}
void SvgDocHdl::endElement( const OUString& aName )
{
if(aName.isEmpty())
return;
if(!mpTarget)
return;
const SVGToken aSVGToken(StrToSVGToken(aName, false));
SvgNode* pTextNode(SVGToken::Text == aSVGToken ? mpTarget : nullptr);
SvgStyleNode* pCssStyle(SVGToken::Style == aSVGToken ? static_cast< SvgStyleNode* >(mpTarget) : nullptr);
SvgTitleDescNode* pSvgTitleDescNode(SVGToken::Title == aSVGToken || SVGToken::Desc == aSVGToken ? static_cast< SvgTitleDescNode* >(mpTarget) : nullptr);
if(!mpTarget->getParent())
{
// last element closing, save this tree
maDocument.appendNode(std::unique_ptr<SvgNode>(mpTarget));
}
mpTarget = const_cast< SvgNode* >(mpTarget->getParent());
if (pSvgTitleDescNode && mpTarget)
{
const OUString& aText(pSvgTitleDescNode->getText());
if(!aText.isEmpty())
{
mpTarget->parseAttribute(aSVGToken, aText);
}
}
if(pCssStyle && pCssStyle->isTextCss())
{
// css style parsing
if(!maCssContents.empty())
{
// need to interpret css styles and remember them as StyleSheets
// #125325# Caution! the Css content may contain block comments
// (see http://www.w3.org/wiki/CSS_basics#CSS_comments). These need
// to be removed first
const OUString aCommentFreeSource(removeBlockComments(*(maCssContents.end() - 1)));
if(aCommentFreeSource.getLength())
{
pCssStyle->addCssStyleSheet(aCommentFreeSource);
}
maCssContents.pop_back();
}
else
{
OSL_ENSURE(false, "Closing CssStyle, but no collector string on stack (!)");
}
}
if(pTextNode)
{
// cleanup read strings
// First pass: handle whitespace. This works in a way that handling a following
// node may append a space to a previous node; so correct line width calculation
// may only happen after this pass finishes
walkRecursive(pTextNode, static_cast<SvgTspanNode*>(pTextNode), nullptr, whiteSpaceHandling);
// Second pass: calculate line widths
walkRecursive(pTextNode, static_cast<SvgTspanNode*>(pTextNode), nullptr, calcTextLineWidths);
}
}
void SvgDocHdl::characters( const OUString& aChars )
{
const sal_uInt32 nLength(aChars.getLength());
if(!(mpTarget && nLength))
return;
switch(mpTarget->getType())
{
case SVGToken::Text:
case SVGToken::Tspan:
case SVGToken::TextPath:
{
const auto& rChilds = mpTarget->getChildren();
if(!rChilds.empty())
{
SvgNode* pChild = rChilds[rChilds.size() - 1].get();
if ( pChild->getType() == SVGToken::Character )
{
SvgCharacterNode& rSvgCharacterNode = static_cast< SvgCharacterNode& >(*pChild);
// concatenate to current character span
rSvgCharacterNode.concatenate(aChars);
break;
}
}
// add character span as simplified tspan (no arguments)
// as direct child of SvgTextNode/SvgTspanNode/SvgTextPathNode
new SvgCharacterNode(maDocument, mpTarget, aChars);
break;
}
case SVGToken::Style:
{
SvgStyleNode& rSvgStyleNode = static_cast< SvgStyleNode& >(*mpTarget);
if(rSvgStyleNode.isTextCss())
{
// collect characters for css style
if(!maCssContents.empty())
{
const OUString aTrimmedChars(aChars.trim());
if(!aTrimmedChars.isEmpty())
{
std::vector< OUString >::iterator aString(maCssContents.end() - 1);
(*aString) += aTrimmedChars;
}
}
else
{
OSL_ENSURE(false, "Closing CssStyle, but no collector string on stack (!)");
}
}
break;
}
case SVGToken::Title:
case SVGToken::Desc:
{
SvgTitleDescNode& rSvgTitleDescNode = static_cast< SvgTitleDescNode& >(*mpTarget);
// add text directly to SvgTitleDescNode
rSvgTitleDescNode.concatenate(aChars);
break;
}
default:
{
// characters not used by a known node
break;
}
}
}
void SvgDocHdl::ignorableWhitespace(const OUString& /*aWhitespaces*/)
{
}
void SvgDocHdl::processingInstruction(const OUString& /*aTarget*/, const OUString& /*aData*/)
{
}
void SvgDocHdl::setDocumentLocator(const uno::Reference< xml::sax::XLocator >& /*xLocator*/)
{
}
} // end of namespace svgio
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V1037 Two or more case-branches perform the same actions. Check lines: 290, 297