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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include "SvgNumber.hxx"
#include "svgtoken.hxx"
#include <com/sun/star/xml/sax/XAttributeList.hpp>
#include <drawinglayer/primitive2d/Primitive2DContainer.hxx>
#include <memory>
#include <string_view>
#include <vector>
#include <optional>
// predefines
namespace svgio::svgreader
{
class SvgNode;
class SvgDocument;
class SvgStyleAttributes;
}
namespace svgio::svgreader
{
enum class XmlSpace
{
NotSet,
Default,
Preserve
};
// display property (see SVG 1.1. 11.5), not inheritable
enum class Display // #i121656#
{
Inline, // the default
Block,
ListItem,
RunIn,
Compact,
Marker,
Table,
InlineTable,
TableRowGroup,
TableHeaderGroup,
TableFooterGroup,
TableRow,
TableColumnGroup,
TableColumn,
TableCell,
TableCaption,
None,
Inherit
};
// helper to convert a string associated with a token of type SVGTokenDisplay
// to the enum Display. Empty strings return the default 'Display_inline' with
// which members should be initialized
Display getDisplayFromContent(std::u16string_view aContent);
class Visitor;
class SvgNode : public InfoProvider
{
private:
/// basic data, Type, document we belong to and parent (if not root)
SVGToken maType;
SvgDocument& mrDocument;
const SvgNode* mpParent;
const SvgNode* mpAlternativeParent;
/// sub hierarchy
std::vector< std::unique_ptr<SvgNode> > maChildren;
/// Id svan value
std::optional<OUString> mpId;
/// Class svan value
std::optional<OUString> mpClass;
/// XmlSpace value
XmlSpace maXmlSpace;
/// Display value #i121656#
Display maDisplay;
// CSS style vector chain, used in decompose phase and built up once per node.
// It contains the StyleHierarchy for the local node. Independent from the
// node hierarchy itself which also needs to be used in style entry solving
::std::vector< const SvgStyleAttributes* > maCssStyleVector;
/// possible local CssStyle, e.g. style="fill:red; stroke:red;"
std::unique_ptr<SvgStyleAttributes> mpLocalCssStyle;
mutable bool mbDecomposing;
// flag if maCssStyleVector is already computed (done only once)
bool mbCssStyleVectorBuilt : 1;
protected:
/// helper to evtl. link to css style
const SvgStyleAttributes* checkForCssStyle(const OUString& rClassStr, const SvgStyleAttributes& rOriginal) const;
/// helper for filling the CssStyle vector once dependent on mbCssStyleVectorBuilt
void fillCssStyleVector(const OUString& rClassStr, const SvgStyleAttributes& rOriginal);
void fillCssStyleVectorUsingHierarchyAndSelectors(
const OUString& rClassStr,
const SvgNode& rCurrent,
const OUString& aConcatenated);
public:
SvgNode(
SVGToken aType,
SvgDocument& rDocument,
SvgNode* pParent);
virtual ~SvgNode() override;
SvgNode(const SvgNode&) = delete;
SvgNode& operator=(const SvgNode&) = delete;
void accept(Visitor& rVisitor);
/// scan helper to read and interpret a local CssStyle to mpLocalCssStyle
void readLocalCssStyle(const OUString& aContent);
/// style helpers
void parseAttributes(const css::uno::Reference< css::xml::sax::XAttributeList >& xAttribs);
virtual const SvgStyleAttributes* getSvgStyleAttributes() const;
virtual void parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent);
virtual void decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool bReferenced) const;
/// #i125258# tell if this node is allowed to have a parent style (e.g. defs do not)
virtual bool supportsParentStyle() const;
/// basic data read access
SVGToken getType() const { return maType; }
const SvgDocument& getDocument() const { return mrDocument; }
const SvgNode* getParent() const { if(mpAlternativeParent) return mpAlternativeParent; return mpParent; }
const std::vector< std::unique_ptr<SvgNode> > & getChildren() const { return maChildren; }
/// InfoProvider support for %, em and ex values
virtual basegfx::B2DRange getCurrentViewPort() const override;
virtual double getCurrentFontSizeInherited() const override;
virtual double getCurrentXHeightInherited() const override;
double getCurrentFontSize() const;
double getCurrentXHeight() const;
/// Id access
std::optional<OUString> const & getId() const { return mpId; }
void setId(OUString const &);
/// Class access
std::optional<OUString> const & getClass() const { return mpClass; }
void setClass(OUString const &);
/// XmlSpace access
XmlSpace getXmlSpace() const;
void setXmlSpace(XmlSpace eXmlSpace) { maXmlSpace = eXmlSpace; }
/// Display access #i121656#
Display getDisplay() const { return maDisplay; }
void setDisplay(Display eDisplay) { maDisplay = eDisplay; }
/// alternative parent
void setAlternativeParent(const SvgNode* pAlternativeParent = nullptr) { mpAlternativeParent = pAlternativeParent; }
};
class Visitor
{
public:
virtual ~Visitor() = default;
virtual void visit(SvgNode const & pNode) = 0;
};
} // end of namespace svgio::svgreader
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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