group.cpp

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/*
    Genesis - A toolkit for working with phylogenetic data.
    Copyright (C) 2014-2022 Lucas Czech
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
    Contact:
    Lucas Czech <lczech@carnegiescience.edu>
    Department of Plant Biology, Carnegie Institution For Science
    260 Panama Street, Stanford, CA 94305, USA
*/
 
#include "genesis/utils/formats/svg/group.hpp"
 
#include "genesis/utils/formats/svg/document.hpp"
#include "genesis/utils/text/string.hpp"
 
#include <algorithm>
#include <ostream>
 
namespace genesis {
namespace utils {
 
// =================================================================================================
//     Svg Group
// =================================================================================================
 
// -------------------------------------------------------------
//     Members
// -------------------------------------------------------------
 
SvgBox SvgGroup::bounding_box() const
{
    // Get bounding box of all elements and the dimensions of the document.
    SvgBox bbox;
    for( auto const& elem : content_ ) {
        bbox = SvgBox::combine( bbox, elem.bounding_box() );
    }
 
    // We apply the group transformations here. This could potentally oversize the box again,
    // as we might rotate stuff etc, but it's good enough for now.
    if( bbox.empty() ) {
        return bbox;
    }
    return transform.apply( bbox );
}
 
void SvgGroup::write( std::ostream& out, size_t indent, SvgDrawingOptions const& options ) const
{
    // Extra indent, to make it nice if a hyperlink is given.
    size_t extra_in = 0;
 
    // Hyperlink opening tag, if set.
    if( ! hyperlink_.empty() ) {
        extra_in = 1;
        out << repeat( SvgDocument::indentation_string, indent );
        out << "<a";
        for( auto const& attr : hyperlink_ ) {
            out << svg_attribute( attr.first, attr.second );
        }
        out << ">\n";
    }
 
    // Group opening tag.
    out << repeat( SvgDocument::indentation_string, indent + extra_in );
    out << "<g";
    if( ! id.empty() ) {
        out << svg_attribute( "id", id );
    }
    transform.write( out );
    out << ">\n";
 
    // Print content.
    for( auto const& elem : content_ ) {
        elem.write( out, indent + extra_in + 1, options );
    }
 
    // Group closing tag.
    out << repeat( SvgDocument::indentation_string, indent + extra_in );
    out << "</g>\n";
 
    // Hyperlink closing tag, if set.
    if( ! hyperlink_.empty() ) {
        out << repeat( SvgDocument::indentation_string, indent );
        out << "</a>\n";
    }
}
 
SvgGroup& SvgGroup::add( SvgObject const& object )
{
    content_.push_back( object );
    return *this;
}
 
SvgGroup& SvgGroup::add( SvgObject&& object )
{
    content_.push_back( std::move( object ));
    return *this;
}
 
SvgGroup& SvgGroup::reverse()
{
    std::reverse( content_.begin(), content_.end() );
    return *this;
}
 
SvgGroup& SvgGroup::operator <<( SvgObject const& object )
{
    return add( object );
}
 
SvgGroup& SvgGroup::operator <<( SvgObject&& object )
{
    return add( std::move( object ));
}
 
} // namespace utils
} // namespace genesis