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qgssymbollayerv2registry.cpp
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1 /***************************************************************************
2  qgssymbollayerv2registry.cpp
3  ---------------------
4  begin : November 2009
5  copyright : (C) 2009 by Martin Dobias
6  email : wonder dot sk at gmail dot com
7  ***************************************************************************
8  * *
9  * This program is free software; you can redistribute it and/or modify *
10  * it under the terms of the GNU General Public License as published by *
11  * the Free Software Foundation; either version 2 of the License, or *
12  * (at your option) any later version. *
13  * *
14  ***************************************************************************/
15 
16 #include "qgssymbollayerv2registry.h"
17 
18 #include "qgsellipsesymbollayerv2.h"
19 #include "qgsmarkersymbollayerv2.h"
20 #include "qgslinesymbollayerv2.h"
21 #include "qgsfillsymbollayerv2.h"
22 #include "qgsvectorfieldsymbollayer.h"
23 
24 QgsSymbolLayerV2Registry* QgsSymbolLayerV2Registry::mInstance = NULL;
25 
26 QgsSymbolLayerV2Registry::QgsSymbolLayerV2Registry()
27 {
28  // init registry with known symbol layers
29  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "SimpleLine", QObject::tr( "Simple line" ), QgsSymbolV2::Line,
30  QgsSimpleLineSymbolLayerV2::create, QgsSimpleLineSymbolLayerV2::createFromSld ) );
31  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "MarkerLine", QObject::tr( "Marker line" ), QgsSymbolV2::Line,
32  QgsMarkerLineSymbolLayerV2::create, QgsMarkerLineSymbolLayerV2::createFromSld ) );
33 
34  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "SimpleMarker", QObject::tr( "Simple marker" ), QgsSymbolV2::Marker,
35  QgsSimpleMarkerSymbolLayerV2::create, QgsSimpleMarkerSymbolLayerV2::createFromSld ) );
36  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "SvgMarker", QObject::tr( "SVG marker" ), QgsSymbolV2::Marker,
37  QgsSvgMarkerSymbolLayerV2::create, QgsSvgMarkerSymbolLayerV2::createFromSld ) );
38  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "FontMarker", QObject::tr( "Font marker" ), QgsSymbolV2::Marker,
39  QgsFontMarkerSymbolLayerV2::create, QgsFontMarkerSymbolLayerV2::createFromSld ) );
40  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "EllipseMarker", QObject::tr( "Ellipse marker" ), QgsSymbolV2::Marker,
41  QgsEllipseSymbolLayerV2::create, QgsEllipseSymbolLayerV2::createFromSld ) );
42  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "VectorField", QObject::tr( "Vector Field marker" ), QgsSymbolV2::Marker,
43  QgsVectorFieldSymbolLayer::create ) );
44 
45  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "SimpleFill", QObject::tr( "Simple fill" ), QgsSymbolV2::Fill,
46  QgsSimpleFillSymbolLayerV2::create, QgsSimpleFillSymbolLayerV2::createFromSld ) );
47  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "SVGFill", QObject::tr( "SVG fill" ), QgsSymbolV2::Fill,
48  QgsSVGFillSymbolLayer::create, QgsSVGFillSymbolLayer::createFromSld ) );
49  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "CentroidFill", QObject::tr( "Centroid fill" ), QgsSymbolV2::Fill,
50  QgsCentroidFillSymbolLayerV2::create, QgsCentroidFillSymbolLayerV2::createFromSld ) );
51  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "LinePatternFill", QObject::tr( "Line pattern fill" ), QgsSymbolV2::Fill,
52  QgsLinePatternFillSymbolLayer::create, QgsLinePatternFillSymbolLayer::createFromSld ) );
53  addSymbolLayerType( new QgsSymbolLayerV2Metadata( "PointPatternFill", QObject::tr( "Point pattern fill" ), QgsSymbolV2::Fill,
54  QgsPointPatternFillSymbolLayer::create, QgsPointPatternFillSymbolLayer::createFromSld ) );
55 }
56 
57 QgsSymbolLayerV2Registry::~QgsSymbolLayerV2Registry()
58 {
59  foreach ( QString name, mMetadata.keys() )
60  {
61  delete mMetadata[name];
62  }
63  mMetadata.clear();
64 }
65 
66 bool QgsSymbolLayerV2Registry::addSymbolLayerType( QgsSymbolLayerV2AbstractMetadata* metadata )
67 {
68  if ( metadata == NULL || mMetadata.contains( metadata->name() ) )
69  return false;
70 
71  mMetadata[metadata->name()] = metadata;
72  return true;
73 }
74 
75 
76 QgsSymbolLayerV2AbstractMetadata* QgsSymbolLayerV2Registry::symbolLayerMetadata( QString name ) const
77 {
78  if ( mMetadata.contains( name ) )
79  return mMetadata.value( name );
80  else
81  return NULL;
82 }
83 
84 QgsSymbolLayerV2Registry* QgsSymbolLayerV2Registry::instance()
85 {
86  if ( !mInstance )
87  mInstance = new QgsSymbolLayerV2Registry();
88  return mInstance;
89 }
90 
91 QgsSymbolLayerV2* QgsSymbolLayerV2Registry::defaultSymbolLayer( QgsSymbolV2::SymbolType type )
92 {
93  switch ( type )
94  {
95  case QgsSymbolV2::Marker:
96  return QgsSimpleMarkerSymbolLayerV2::create();
97 
98  case QgsSymbolV2::Line:
99  return QgsSimpleLineSymbolLayerV2::create();
100 
101  case QgsSymbolV2::Fill:
102  return QgsSimpleFillSymbolLayerV2::create();
103  }
104  return NULL;
105 }
106 
107 
108 QgsSymbolLayerV2* QgsSymbolLayerV2Registry::createSymbolLayer( QString name, const QgsStringMap& properties ) const
109 {
110  if ( !mMetadata.contains( name ) )
111  return NULL;
112 
113  return mMetadata[name]->createSymbolLayer( properties );
114 }
115 
116 QgsSymbolLayerV2* QgsSymbolLayerV2Registry::createSymbolLayerFromSld( QString name, QDomElement& element ) const
117 {
118  if ( !mMetadata.contains( name ) )
119  return NULL;
120 
121  return mMetadata[name]->createSymbolLayerFromSld( element );
122 }
123 
124 QStringList QgsSymbolLayerV2Registry::symbolLayersForType( QgsSymbolV2::SymbolType type )
125 {
126  QStringList lst;
127  QMap<QString, QgsSymbolLayerV2AbstractMetadata*>::ConstIterator it = mMetadata.begin();
128  for ( ; it != mMetadata.end(); ++it )
129  {
130  if (( *it )->type() == type )
131  lst.append( it.key() );
132  }
133  return lst;
134 }
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