QGIS API Documentation 3.29.0-Master (006c3c0232)
qgsmaplayerfactory.cpp
Go to the documentation of this file.
1/***************************************************************************
2 qgsmaplayerfactory.cpp
3 --------------------------------------
4 Date : March 2021
5 Copyright : (C) 2021 by Nyall Dawson
6 Email : nyall dot dawson at gmail dot com
7***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#include "qgsmaplayerfactory.h"
19#include "qgsvectorlayer.h"
20#include "qgsrasterlayer.h"
21#include "qgsmeshlayer.h"
22#include "qgspointcloudlayer.h"
23#include "qgsvectortilelayer.h"
24#include "qgsannotationlayer.h"
25#include "qgsgrouplayer.h"
26
27QgsMapLayerType QgsMapLayerFactory::typeFromString( const QString &string, bool &ok )
28{
29 ok = true;
30 if ( string.compare( QLatin1String( "vector" ), Qt::CaseInsensitive ) == 0 )
32 else if ( string.compare( QLatin1String( "raster" ), Qt::CaseInsensitive ) == 0 )
34 else if ( string.compare( QLatin1String( "mesh" ), Qt::CaseInsensitive ) == 0 )
36 else if ( string.compare( QLatin1String( "vector-tile" ), Qt::CaseInsensitive ) == 0 )
38 else if ( string.compare( QLatin1String( "point-cloud" ), Qt::CaseInsensitive ) == 0 )
40 else if ( string.compare( QLatin1String( "plugin" ), Qt::CaseInsensitive ) == 0 )
42 else if ( string.compare( QLatin1String( "annotation" ), Qt::CaseInsensitive ) == 0 )
44 else if ( string.compare( QLatin1String( "group" ), Qt::CaseInsensitive ) == 0 )
46
47 ok = false;
49}
50
52{
53 switch ( type )
54 {
56 return QStringLiteral( "vector" );
58 return QStringLiteral( "raster" );
60 return QStringLiteral( "plugin" );
62 return QStringLiteral( "mesh" );
64 return QStringLiteral( "vector-tile" );
66 return QStringLiteral( "annotation" );
68 return QStringLiteral( "point-cloud" );
70 return QStringLiteral( "group" );
71 }
72 return QString();
73}
74
75QgsMapLayer *QgsMapLayerFactory::createLayer( const QString &uri, const QString &name, QgsMapLayerType type, const LayerOptions &options, const QString &provider )
76{
77 switch ( type )
78 {
80 {
81 QgsVectorLayer::LayerOptions vectorOptions;
82 vectorOptions.transformContext = options.transformContext;
83 vectorOptions.loadDefaultStyle = options.loadDefaultStyle;
84 vectorOptions.loadAllStoredStyles = options.loadAllStoredStyles;
85 return new QgsVectorLayer( uri, name, provider, vectorOptions );
86 }
87
89 {
90 QgsRasterLayer::LayerOptions rasterOptions;
91 rasterOptions.transformContext = options.transformContext;
92 rasterOptions.loadDefaultStyle = options.loadDefaultStyle;
93 return new QgsRasterLayer( uri, name, provider, rasterOptions );
94 }
95
97 {
99 meshOptions.transformContext = options.transformContext;
100 meshOptions.loadDefaultStyle = options.loadDefaultStyle;
101 return new QgsMeshLayer( uri, name, provider, meshOptions );
102 }
103
105 {
106 const QgsVectorTileLayer::LayerOptions vectorTileOptions( options.transformContext );
107 return new QgsVectorTileLayer( uri, name, vectorTileOptions );
108 }
109
111 {
112 const QgsAnnotationLayer::LayerOptions annotationOptions( options.transformContext );
113 return new QgsAnnotationLayer( name, annotationOptions );
114 }
115
117 {
118 const QgsGroupLayer::LayerOptions groupOptions( options.transformContext );
119 return new QgsGroupLayer( name, groupOptions );
120 }
121
123 {
124 QgsPointCloudLayer::LayerOptions pointCloudOptions;
125 pointCloudOptions.loadDefaultStyle = options.loadDefaultStyle;
126 pointCloudOptions.transformContext = options.transformContext;
127 return new QgsPointCloudLayer( uri, name, provider, pointCloudOptions );
128 }
129
131 break;
132 }
133 return nullptr;
134}
Represents a map layer containing a set of georeferenced annotations, e.g.
A map layer which consists of a set of child layers, where all component layers are rendered as a sin...
Definition: qgsgrouplayer.h:42
static QgsMapLayerType typeFromString(const QString &string, bool &ok)
Returns the map layer type corresponding a string value.
static QString typeToString(QgsMapLayerType type)
Converts a map layer type to a string value.
static QgsMapLayer * createLayer(const QString &uri, const QString &name, QgsMapLayerType type, const LayerOptions &options, const QString &provider=QString())
Creates a map layer, given a uri, name, layer type and provider name.
Base class for all map layer types.
Definition: qgsmaplayer.h:73
Represents a mesh layer supporting display of data on structured or unstructured meshes.
Definition: qgsmeshlayer.h:100
Represents a map layer supporting display of point clouds.
Represents a raster layer.
Represents a vector layer which manages a vector based data sets.
Implements a map layer that is dedicated to rendering of vector tiles.
QgsMapLayerType
Types of layers that can be added to a map.
Definition: qgis.h:47
@ PointCloudLayer
Point cloud layer. Added in QGIS 3.18.
@ MeshLayer
Mesh layer. Added in QGIS 3.2.
@ VectorLayer
Vector layer.
@ RasterLayer
Raster layer.
@ GroupLayer
Composite group layer. Added in QGIS 3.24.
@ VectorTileLayer
Vector tile layer. Added in QGIS 3.14.
@ AnnotationLayer
Contains freeform, georeferenced annotations. Added in QGIS 3.16.
@ PluginLayer
Plugin based layer.
Setting options for loading annotation layers.
Setting options for loading group layers.
Definition: qgsgrouplayer.h:52
Setting options for loading layers.
QgsCoordinateTransformContext transformContext
Transform context.
bool loadAllStoredStyles
Controls whether the stored styles will be all loaded.
bool loadDefaultStyle
Set to true if the default layer style should be loaded.
Setting options for loading mesh layers.
Definition: qgsmeshlayer.h:108
QgsCoordinateTransformContext transformContext
Coordinate transform context.
Definition: qgsmeshlayer.h:121
bool loadDefaultStyle
Set to true if the default layer style should be loaded.
Definition: qgsmeshlayer.h:127
Setting options for loading point cloud layers.
bool loadDefaultStyle
Set to true if the default layer style should be loaded.
QgsCoordinateTransformContext transformContext
Coordinate transform context.
Setting options for loading raster layers.
bool loadDefaultStyle
Sets to true if the default layer style should be loaded.
QgsCoordinateTransformContext transformContext
Coordinate transform context.
Setting options for loading vector layers.
bool loadDefaultStyle
Set to true if the default layer style should be loaded.
QgsCoordinateTransformContext transformContext
Coordinate transform context.
bool loadAllStoredStyles
Controls whether the stored styles will be all loaded.
Setting options for loading vector tile layers.