Marble

KmlMemberTagHandler.cpp
1 // SPDX-License-Identifier: LGPL-2.1-or-later
2 //
3 // SPDX-FileCopyrightText: 2015 Marius-Valeriu Stanciu <[email protected]>
4 //
5 
6 #include "KmlMemberTagHandler.h"
7 
8 #include "GeoDataPlacemark.h"
9 #include "GeoDataLinearRing.h"
10 #include "GeoDataPolygon.h"
11 #include "GeoDataGeometry.h"
12 #include "GeoDataTypes.h"
13 #include "KmlElementDictionary.h"
14 #include "osm/OsmPlacemarkData.h"
15 #include "GeoParser.h"
16 
17 #include <QtDebug>
18 
19 namespace Marble
20 {
21 namespace kml
22 {
23 KML_DEFINE_TAG_HANDLER_MX( member )
24 
25 GeoNode* KmlmemberTagHandler::parse( GeoParser& parser ) const
26 {
27  int memberIndex = parser.attribute( "index" ).toInt();
28  /* Only possible case: member of polygon placemark:
29  *...
30  * <Placemark>
31  * <ExtendedData>
32  * <mx:OsmPlacemarkData>
33  * <mx:member index="-1">
34  * <mx:OsmPlacemarkData>
35  * <mx:nd index="0">...</nd>
36  * <mx:nd index="1">...</nd>
37  * ...
38  */
39  if( parser.parentElement( 2 ).is<GeoDataPlacemark>() ) {
40  GeoDataPlacemark *placemark = parser.parentElement( 2 ).nodeAs<GeoDataPlacemark>();
41  GeoDataPolygon *polygon = geodata_cast<GeoDataPolygon>(placemark->geometry());
42  if (!polygon) {
43  return nullptr;
44  }
45 
46  // The memberIndex is used to determine which member this tag represents
47  if ( memberIndex == -1 ) {
48  return &polygon->outerBoundary();
49  }
50  else {
51  if ( memberIndex >= polygon->innerBoundaries().size() ) {
52  return nullptr;
53  }
54  return &polygon->innerBoundaries()[ memberIndex ];
55  }
56  }
57 
58  return nullptr;
59 }
60 
61 }
62 }
Binds a QML item to a specific geodetic location in screen coordinates.
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