81 lines
2.9 KiB
Plaintext
81 lines
2.9 KiB
Plaintext
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/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef OSGEARTHSYMBOLOGY_STYLE_SELECTOR_H
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#define OSGEARTHSYMBOLOGY_STYLE_SELECTOR_H 1
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#include <osgEarth/Common>
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#include <osgEarth/Style>
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#include <osgEarth/Expression>
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namespace osgEarth
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{
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/**
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* A style selector lets you classify styles based on rules, such as a
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* feature query. By default the selector selects the style with the
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* same name as the selector, but you can override this by settings
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* the styleName property.
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*/
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class OSGEARTH_EXPORT StyleSelector
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{
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public:
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/** Constructs a style selector */
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StyleSelector( const Config& conf =Config() );
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/** Constructs a style selector with a name and expression */
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StyleSelector(const std::string& name, const StringExpression& expr);
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virtual ~StyleSelector() { }
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public: // properties
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/** Name of this style class. */
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optional<std::string>& name() { return _name; }
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const optional<std::string>& name() const { return _name; }
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/** Name of the style to select */
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optional<std::string>& styleName() { return _styleName; }
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const optional<std::string>& styleName() const { return _styleName; }
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/** Script that returns the name of the style to select. */
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optional<StringExpression>& styleExpression() { return _styleExpression; }
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const optional<StringExpression>& styleExpression() const { return _styleExpression; }
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/** Expression/spatial filter used to select items to which the style will apply */
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optional<Query>& query() { return _query; }
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const optional<Query>& query() const { return _query; }
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/** Returns the styleClass() property, if set; otherwise returns the selector name. */
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std::string getSelectedStyleName() const;
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//Configurable
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virtual void mergeConfig( const Config& conf );
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virtual Config getConfig() const;
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protected:
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optional<std::string> _name;
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optional<std::string> _styleName;
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optional<StringExpression> _styleExpression;
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optional<Query> _query;
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};
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} // namespace osgEarth
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#endif // OSGEARTHSYMBOLOGY_STYLE_SELECTOR_H
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