337 lines
8.1 KiB
C++
337 lines
8.1 KiB
C++
/* This file is part of Mapnik (c++ mapping toolkit)
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* Copyright (C) 2007 Artem Pavlenko
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*
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* Mapnik is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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//$Id$
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#include "styles_model.hpp"
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#include <boost/scoped_ptr.hpp>
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#include <boost/utility.hpp>
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#include <QList>
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#include <QIcon>
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class node : private boost::noncopyable
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{
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struct node_base
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{
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virtual QString name() const=0;
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virtual QIcon icon() const=0;
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virtual ~node_base() {}
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};
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template <typename T>
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struct wrap : public node_base
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{
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wrap(T const& obj)
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: obj_(obj) {}
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~wrap() {}
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QString name () const
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{
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return obj_.name();
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}
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QIcon icon() const
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{
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return obj_.icon();
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}
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T obj_;
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};
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public:
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template <typename T>
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node ( T const& obj, node * parent=0)
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: impl_(new wrap<T>(obj)),
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parent_(parent)
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{}
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QString name() const
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{
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return impl_->name();
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}
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QIcon icon() const
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{
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return impl_->icon();
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}
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unsigned num_children() const
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{
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return children_.count();
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}
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node * child(unsigned row) const
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{
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return children_.value(row);
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}
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node * parent() const
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{
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return parent_;
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}
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node * add_child(node * child)
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{
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children_.push_back(child);
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return child;
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}
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int row () const
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{
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if (parent_)
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return parent_->children_.indexOf(const_cast<node*>(this));
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else
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return 0;
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}
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~node()
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{
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qDeleteAll(children_);
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}
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private:
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boost::scoped_ptr<node_base> impl_;
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QList<node*> children_;
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node * parent_;
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};
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struct symbolizer_info : public boost::static_visitor<QString>
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{
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QString operator() (mapnik::point_symbolizer const& sym) const
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{
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return QString("PointSymbolizer");
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}
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QString operator() (mapnik::line_symbolizer const& sym) const
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{
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return QString("LineSymbolizer");
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}
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QString operator() (mapnik::line_pattern_symbolizer const& sym) const
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{
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return QString("LinePatternSymbolizer");
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}
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QString operator() (mapnik::polygon_symbolizer const& sym) const
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{
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return QString("PolygonSymbolizer");
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}
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QString operator() (mapnik::polygon_pattern_symbolizer const& sym) const
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{
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return QString("PolygonSymbolizer");
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}
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QString operator() (mapnik::text_symbolizer const& sym) const
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{
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return QString("TextSymbolizer");
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}
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QString operator() (mapnik::shield_symbolizer const& sym) const
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{
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return QString("ShieldSymbolizer");
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}
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template <typename T>
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QString operator() (T const& ) const
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{
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return QString ("FIXME");
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}
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};
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class symbolizer_node
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{
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public:
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symbolizer_node(mapnik::symbolizer const & sym)
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: sym_(sym) {}
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~symbolizer_node(){}
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QString name() const
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{
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//return QString("Symbolizer:fixme");
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return boost::apply_visitor(symbolizer_info(),sym_);
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}
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QIcon icon() const
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{
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return QIcon(":/images/filter.png");
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}
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mapnik::symbolizer const& sym_;
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};
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class rule_node
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{
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public:
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rule_node(QString name,mapnik::rule_type const & r)
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: name_(name),
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rule_(r) {}
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~rule_node() {}
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QString name() const
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{
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mapnik::filter_ptr filter = rule_.get_filter();
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return QString(filter->to_string().c_str());
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}
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QIcon icon() const
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{
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return QIcon(":/images/filter.png");
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}
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private:
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QString name_;
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mapnik::rule_type const& rule_;
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};
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class style_node
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{
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public:
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style_node(QString name, mapnik::feature_type_style const& style)
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: name_(name),
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style_(style) {}
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~style_node() {}
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QString name() const
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{
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return name_;
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}
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QIcon icon() const
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{
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return QIcon(":/images/style.png");
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}
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private:
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QString name_;
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mapnik::feature_type_style const& style_;
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};
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class map_node
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{
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public:
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explicit map_node(boost::shared_ptr<mapnik::Map> map)
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: map_(map) {}
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~map_node() {}
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QString name() const
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{
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return QString("Map");
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}
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QIcon icon() const
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{
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return QIcon(":/images/map.png");
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}
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private:
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boost::shared_ptr<mapnik::Map> map_;
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};
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StyleModel::StyleModel(boost::shared_ptr<mapnik::Map> map, QObject * parent)
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: QAbstractItemModel(parent),
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root_(new node(map_node(map)))
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{
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typedef std::map<std::string,mapnik::feature_type_style> style_type;
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style_type const & styles = map->styles();
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style_type::const_iterator itr = styles.begin();
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style_type::const_iterator end = styles.end();
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for (; itr != end; ++itr)
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{
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node * style_n = root_->add_child(new node(style_node(QString(itr->first.c_str()),itr->second),root_.get()));
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mapnik::rules const& rules = itr->second.get_rules();
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mapnik::rules::const_iterator itr2 = rules.begin();
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for ( ; itr2 != rules.end();++itr2)
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{
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node* rule_n = style_n->add_child(new node(rule_node(QString("Rule"),*itr2),style_n));
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mapnik::symbolizers::const_iterator itr3 = (*itr2).begin();
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for ( ; itr3 !=itr2->end();++itr3)
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{
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rule_n->add_child(new node(symbolizer_node(*itr3),rule_n));
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}
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}
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}
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}
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StyleModel::~StyleModel() {}
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// interface
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QModelIndex StyleModel::index (int row, int col, QModelIndex const& parent) const
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{
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qDebug("index() row=%d col=%d parent::internalId() = %lld", row,col,parent.internalId());
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node * parent_node;
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if (!parent.isValid())
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parent_node = root_.get();
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else
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parent_node = static_cast<node*>(parent.internalPointer());
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node * child_node = parent_node->child(row);
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if (child_node)
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return createIndex(row,col,child_node);
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else
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return QModelIndex();
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}
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QModelIndex StyleModel::parent (QModelIndex const& index) const
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{
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node * child_node = static_cast<node*>(index.internalPointer());
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node * parent_node = child_node->parent();
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if (parent_node == root_.get())
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return QModelIndex();
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return createIndex(parent_node->row(),0,parent_node);
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}
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int StyleModel::rowCount(QModelIndex const& parent) const
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{
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qDebug("rowCount");
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node * parent_node;
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if (parent.column() > 0) return 0;
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if (!parent.isValid())
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parent_node = root_.get();
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else
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parent_node = static_cast<node*>(parent.internalPointer());
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return parent_node->num_children();
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}
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int StyleModel::columnCount( QModelIndex const&) const
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{
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return 1;
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}
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QVariant StyleModel::data(const QModelIndex & index, int role) const
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{
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qDebug("data index::internalId() = %lld", index.internalId());
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if (!index.isValid())
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return QVariant();
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node * cur_node = static_cast<node*>(index.internalPointer());
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if (cur_node)
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{
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if (role == Qt::DisplayRole)
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{
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return QVariant(cur_node->name());
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}
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else if ( role == Qt::DecorationRole)
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{
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return cur_node->icon();
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}
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}
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return QVariant();
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}
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