-
-
Notifications
You must be signed in to change notification settings - Fork 3k
/
qgsprocessingcontext.cpp
162 lines (140 loc) · 5.97 KB
/
qgsprocessingcontext.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
/***************************************************************************
qgsprocessingcontext.cpp
----------------------
begin : April 2017
copyright : (C) 2017 by Nyall Dawson
email : nyall dot dawson at gmail dot com
***************************************************************************/
/***************************************************************************
* *
* 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 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsprocessingcontext.h"
#include "qgsprocessingutils.h"
#include "qgsproviderregistry.h"
#include "qgssettings.h"
QgsProcessingContext::QgsProcessingContext()
: mPreferredVectorFormat( QgsProcessingUtils::defaultVectorExtension() )
, mPreferredRasterFormat( QgsProcessingUtils::defaultRasterExtension() )
{
auto callback = [ = ]( const QgsFeature & feature )
{
if ( mFeedback )
mFeedback->reportError( QObject::tr( "Encountered a transform error when reprojecting feature with id %1." ).arg( feature.id() ) );
};
mTransformErrorCallback = callback;
}
QgsProcessingContext::~QgsProcessingContext()
{
for ( auto it = mLayersToLoadOnCompletion.constBegin(); it != mLayersToLoadOnCompletion.constEnd(); ++it )
{
delete it.value().postProcessor();
}
}
void QgsProcessingContext::setLayersToLoadOnCompletion( const QMap<QString, QgsProcessingContext::LayerDetails> &layers )
{
for ( auto it = mLayersToLoadOnCompletion.constBegin(); it != mLayersToLoadOnCompletion.constEnd(); ++it )
{
if ( !layers.contains( it.key() ) || layers.value( it.key() ).postProcessor() != it.value().postProcessor() )
delete it.value().postProcessor();
}
mLayersToLoadOnCompletion = layers;
}
void QgsProcessingContext::addLayerToLoadOnCompletion( const QString &layer, const QgsProcessingContext::LayerDetails &details )
{
if ( mLayersToLoadOnCompletion.contains( layer ) && mLayersToLoadOnCompletion.value( layer ).postProcessor() != details.postProcessor() )
delete mLayersToLoadOnCompletion.value( layer ).postProcessor();
mLayersToLoadOnCompletion.insert( layer, details );
}
void QgsProcessingContext::setInvalidGeometryCheck( QgsFeatureRequest::InvalidGeometryCheck check )
{
mInvalidGeometryCheck = check;
mInvalidGeometryCallback = defaultInvalidGeometryCallbackForCheck( check );
}
std::function<void ( const QgsFeature & )> QgsProcessingContext::defaultInvalidGeometryCallbackForCheck( QgsFeatureRequest::InvalidGeometryCheck check ) const
{
switch ( check )
{
case QgsFeatureRequest::GeometryAbortOnInvalid:
{
auto callback = []( const QgsFeature & feature )
{
throw QgsProcessingException( QObject::tr( "Feature (%1) has invalid geometry. Please fix the geometry or change the Processing setting to the \"Ignore invalid input features\" option." ).arg( feature.id() ) );
};
return callback;
}
case QgsFeatureRequest::GeometrySkipInvalid:
{
auto callback = [ = ]( const QgsFeature & feature )
{
if ( mFeedback )
mFeedback->reportError( QObject::tr( "Feature (%1) has invalid geometry and has been skipped. Please fix the geometry or change the Processing setting to the \"Ignore invalid input features\" option." ).arg( feature.id() ) );
};
return callback;
}
case QgsFeatureRequest::GeometryNoCheck:
return nullptr;
}
return nullptr;
}
void QgsProcessingContext::takeResultsFrom( QgsProcessingContext &context )
{
setLayersToLoadOnCompletion( context.mLayersToLoadOnCompletion );
context.mLayersToLoadOnCompletion.clear();
tempLayerStore.transferLayersFromStore( context.temporaryLayerStore() );
}
QgsMapLayer *QgsProcessingContext::getMapLayer( const QString &identifier )
{
return QgsProcessingUtils::mapLayerFromString( identifier, *this, false );
}
QgsMapLayer *QgsProcessingContext::takeResultLayer( const QString &id )
{
return tempLayerStore.takeMapLayer( tempLayerStore.mapLayer( id ) );
}
QgsProcessingLayerPostProcessorInterface *QgsProcessingContext::LayerDetails::postProcessor() const
{
return mPostProcessor;
}
void QgsProcessingContext::LayerDetails::setPostProcessor( QgsProcessingLayerPostProcessorInterface *processor )
{
if ( mPostProcessor && mPostProcessor != processor )
delete mPostProcessor;
mPostProcessor = processor;
}
void QgsProcessingContext::LayerDetails::setOutputLayerName( QgsMapLayer *layer ) const
{
if ( !layer )
return;
const bool preferFilenameAsLayerName = QgsSettings().value( QStringLiteral( "Processing/Configuration/PREFER_FILENAME_AS_LAYER_NAME" ), true ).toBool();
// note - for temporary layers, we don't use the filename, regardless of user setting (it will be meaningless!)
if ( ( !forceName && preferFilenameAsLayerName && !layer->isTemporary() ) || name.isEmpty() )
{
const QVariantMap sourceParts = QgsProviderRegistry::instance()->decodeUri( layer->providerType(), layer->source() );
const QString layerName = sourceParts.value( QStringLiteral( "layerName" ) ).toString();
// if output layer name exists, use that!
if ( !layerName.isEmpty() )
layer->setName( layerName );
else
{
const QString path = sourceParts.value( QStringLiteral( "path" ) ).toString();
if ( !path.isEmpty() )
{
const QFileInfo fi( path );
layer->setName( fi.baseName() );
}
else if ( !name.isEmpty() )
{
// fallback to parameter's name -- shouldn't happen!
layer->setName( name );
}
}
}
else
{
layer->setName( name );
}
}