QGIS API Documentation 3.29.0-Master (ade4f0cf0f)
qgsmaskidprovider.cpp
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1/***************************************************************************
2 qgsmaskidprovider.cpp
3 ---------------------
4 begin : August 2019
5 copyright : (C) 2019 by Hugo Mercier / Oslandia
6 email : infos at oslandia 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 "qgsmaskidprovider.h"
18
19int QgsMaskIdProvider::insertLabelLayer( const QString &layerId, const QString &ruleId, const QSet<QgsSymbolLayerReference> &maskedSymbolLayers )
20{
21 const QString strId = layerId + ruleId;
22 // look for an existing symbol layer set
23 const int maskId = mLabelLayers.indexOf( maskedSymbolLayers );
24 if ( maskId != -1 )
25 {
26 // add the layer id / rule id to the existing mask id
27 mMaskIds[maskId].insert( strId );
28 return maskId;
29 }
30 // else
31 mLabelLayers.push_back( maskedSymbolLayers );
32 mMaskIds.push_back( QSet<QString>() << strId );
33 return mMaskIds.size() - 1;
34}
35
36int QgsMaskIdProvider::maskId( const QString &labelLayerId, const QString &labelRuleId ) const
37{
38 if ( labelLayerId.isEmpty() )
39 return -1;
40
41 const QString id = labelLayerId + labelRuleId;
42 for ( int i = 0; i < mMaskIds.size(); i++ )
43 {
44 if ( mMaskIds[i].contains( id ) )
45 return i;
46 }
47 return -1;
48}
49
51{
52 return mMaskIds.size();
53}
int size() const
Returns the number of identifiers allocated.
int maskId(const QString &labelLayerId=QString(), const QString &labelRuleId=QString()) const
Returns the mask id associated with a label layer and its optional label rule.
int insertLabelLayer(const QString &layerId, const QString &ruleId, const QSet< QgsSymbolLayerReference > &maskedSymbolLayers)
Inserts a label layer to the provider and returns its associated mask id.