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Diffstat (limited to 'svgio/inc/svgnode.hxx')
| -rw-r--r-- | svgio/inc/svgnode.hxx | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/svgio/inc/svgnode.hxx b/svgio/inc/svgnode.hxx new file mode 100644 index 0000000000..63abc4f8cb --- /dev/null +++ b/svgio/inc/svgnode.hxx @@ -0,0 +1,201 @@ +/* -*- 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 SvgStyleAttributes& rOriginal) const; + + /// helper for filling the CssStyle vector once dependent on mbCssStyleVectorBuilt + void fillCssStyleVector(const SvgStyleAttributes& rOriginal); + void addCssStyle( + const SvgDocument& rDocument, + const OUString& aConcatenated); + void fillCssStyleVectorUsingHierarchyAndSelectors( + const SvgNode& rCurrent, + std::u16string_view aConcatenated); + void fillCssStyleVectorUsingParent( + const SvgNode& rCurrent); + + 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(std::u16string_view aContent); + + /// style helpers + void parseAttributes(const css::uno::Reference< css::xml::sax::XAttributeList >& xAttribs); + virtual const SvgStyleAttributes* getSvgStyleAttributes() const; + virtual void parseAttribute(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; } + + /// Check if there is a local css style + bool hasLocalCssStyle() { return static_cast<bool>(mpLocalCssStyle); } + }; + + 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: */ |