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qgssnappingconfig.cpp
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qgssnappingconfig.cpp
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/***************************************************************************
qgsprojectsnappingsettings.cpp - QgsProjectSnappingSettings
---------------------
begin : 29.8.2016
copyright : (C) 2016 by Denis Rouzaud
email : denis.rouzaud@gmail.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 "qgssnappingconfig.h"
#include <QDomElement>
#include <QHeaderView>
#include <QSettings>
#include "qgslogger.h"
#include "qgsmaplayerregistry.h"
#include "qgsvectorlayer.h"
#include "qgsproject.h"
QgsSnappingConfig::IndividualLayerSettings::IndividualLayerSettings()
: mValid( false )
, mEnabled( false )
, mType( Vertex )
, mTolerance( 0 )
, mUnits( QgsTolerance::Pixels )
, mAvoidIntersection( false )
{}
QgsSnappingConfig::IndividualLayerSettings::IndividualLayerSettings( bool enabled, SnappingType type, double tolerance, QgsTolerance::UnitType units, bool avoidIntersection )
: mValid( true )
, mEnabled( enabled )
, mType( type )
, mTolerance( tolerance )
, mUnits( units )
, mAvoidIntersection( avoidIntersection )
{}
bool QgsSnappingConfig::IndividualLayerSettings::valid() const
{
return mValid;
}
bool QgsSnappingConfig::IndividualLayerSettings::enabled() const
{
return mEnabled;
}
void QgsSnappingConfig::IndividualLayerSettings::setEnabled( bool enabled )
{
mEnabled = enabled;
}
QgsSnappingConfig::SnappingType QgsSnappingConfig::IndividualLayerSettings::type() const
{
return mType;
}
void QgsSnappingConfig::IndividualLayerSettings::setType( SnappingType type )
{
mType = type;
}
double QgsSnappingConfig::IndividualLayerSettings::tolerance() const
{
return mTolerance;
}
void QgsSnappingConfig::IndividualLayerSettings::setTolerance( double tolerance )
{
mTolerance = tolerance;
}
QgsTolerance::UnitType QgsSnappingConfig::IndividualLayerSettings::units() const
{
return mUnits;
}
void QgsSnappingConfig::IndividualLayerSettings::setUnits( QgsTolerance::UnitType units )
{
mUnits = units;
}
bool QgsSnappingConfig::IndividualLayerSettings::avoidIntersection() const
{
return mAvoidIntersection;
}
void QgsSnappingConfig::IndividualLayerSettings::setAvoidIntersection( bool avoidIntersection )
{
mAvoidIntersection = avoidIntersection;
}
bool QgsSnappingConfig::IndividualLayerSettings::operator !=( const QgsSnappingConfig::IndividualLayerSettings& other ) const
{
return mValid != other.mValid
|| mEnabled != other.mEnabled
|| mType != other.mType
|| mTolerance != other.mTolerance
|| mUnits != other.mUnits
|| mAvoidIntersection != other.mAvoidIntersection;
}
bool QgsSnappingConfig::IndividualLayerSettings::operator ==( const QgsSnappingConfig::IndividualLayerSettings& other ) const
{
return mValid == other.mValid
&& mEnabled == other.mEnabled
&& mType == other.mType
&& mTolerance == other.mTolerance
&& mUnits == other.mUnits
&& mAvoidIntersection == other.mAvoidIntersection;
}
QgsSnappingConfig::QgsSnappingConfig()
{
reset();
}
QgsSnappingConfig::~QgsSnappingConfig()
{
}
bool QgsSnappingConfig::operator==( const QgsSnappingConfig& other ) const
{
return mEnabled == other.mEnabled
&& mMode == other.mMode
&& mType == other.mType
&& mTolerance == other.mTolerance
&& mUnits == other.mUnits
&& mIntersectionSnapping == other.mIntersectionSnapping
&& mIndividualLayerSettings == other.mIndividualLayerSettings;
}
void QgsSnappingConfig::reset()
{
// get defaults values. They are both used for standard and advanced configuration (per layer)
bool enabled = QSettings().value( "/qgis/digitizing/default_advanced_snap_enabled", true ).toBool();
SnappingMode mode = ( SnappingMode )QSettings().value( "/qgis/digitizing/default_snap_mode", ( int )AllLayers ).toInt();
if ( mMode == 0 )
{
// backward compatibility with QGIS 2.x
// could be removed in 3.4+
mMode = AllLayers;
}
SnappingType type = ( SnappingType )QSettings().value( "/qgis/digitizing/default_snap_type", ( int )Vertex ).toInt();
double tolerance = QSettings().value( "/qgis/digitizing/default_snapping_tolerance", 0 ).toDouble();
QgsTolerance::UnitType units = ( QgsTolerance::UnitType )QSettings().value( "/qgis/digitizing/default_snapping_tolerance_unit", ( int )QgsTolerance::ProjectUnits ).toInt();
// assign main (standard) config
mEnabled = enabled;
mMode = mode;
mType = type;
mTolerance = tolerance;
// do not allow unit to be "layer" if not in advanced configuration
if ( mMode != AdvancedConfiguration )
{
mUnits = QgsTolerance::ProjectUnits;
}
else
{
mUnits = units;
}
mIntersectionSnapping = false;
// set advanced config
mIndividualLayerSettings = QHash<QgsVectorLayer *, IndividualLayerSettings>();
Q_FOREACH ( QgsMapLayer *ml, QgsMapLayerRegistry::instance()->mapLayers() )
{
QgsVectorLayer* vl = dynamic_cast<QgsVectorLayer*>( ml );
if ( vl )
{
mIndividualLayerSettings.insert( vl, IndividualLayerSettings( enabled, type, tolerance, units ) );
}
}
}
bool QgsSnappingConfig::enabled() const
{
return mEnabled;
}
void QgsSnappingConfig::setEnabled( bool enabled )
{
if ( mEnabled == enabled )
{
return;
}
mEnabled = enabled;
}
QgsSnappingConfig::SnappingMode QgsSnappingConfig::mode() const
{
return mMode;
}
void QgsSnappingConfig::setMode( QgsSnappingConfig::SnappingMode mode )
{
if ( mMode == mode )
{
return;
}
mMode = mode;
}
QgsSnappingConfig::SnappingType QgsSnappingConfig::type() const
{
return mType;
}
void QgsSnappingConfig::setType( QgsSnappingConfig::SnappingType type )
{
if ( mType == type )
{
return;
}
mType = type;
}
double QgsSnappingConfig::tolerance() const
{
return mTolerance;
}
void QgsSnappingConfig::setTolerance( double tolerance )
{
if ( mTolerance == tolerance )
{
return;
}
mTolerance = tolerance;
}
QgsTolerance::UnitType QgsSnappingConfig::units() const
{
return mUnits;
}
void QgsSnappingConfig::setUnits( QgsTolerance::UnitType units )
{
if ( mUnits == units )
{
return;
}
mUnits = units;
}
bool QgsSnappingConfig::intersectionSnapping() const
{
return mIntersectionSnapping;
}
void QgsSnappingConfig::setIntersectionSnapping( bool enabled )
{
mIntersectionSnapping = enabled;
}
QHash<QgsVectorLayer*, QgsSnappingConfig::IndividualLayerSettings> QgsSnappingConfig::individualLayerSettings() const
{
return mIndividualLayerSettings;
}
QgsSnappingConfig::IndividualLayerSettings QgsSnappingConfig::individualLayerSettings( QgsVectorLayer* vl ) const
{
if ( vl && mIndividualLayerSettings.contains( vl ) )
{
return mIndividualLayerSettings.value( vl );
}
else
{
// return invalid settings
return IndividualLayerSettings();
}
}
void QgsSnappingConfig::setIndividualLayerSettings( QgsVectorLayer* vl, IndividualLayerSettings individualLayerSettings )
{
if ( !vl || mIndividualLayerSettings.value( vl ) == individualLayerSettings )
{
return;
}
mIndividualLayerSettings.insert( vl, individualLayerSettings );
}
bool QgsSnappingConfig::operator!=( const QgsSnappingConfig& other ) const
{
return mEnabled != other.mEnabled
|| mMode != other.mMode
|| mType != other.mType
|| mTolerance != other.mTolerance
|| mUnits != other.mUnits
|| mIndividualLayerSettings != other.mIndividualLayerSettings;
}
void QgsSnappingConfig::readProject( const QDomDocument& doc )
{
QDomElement snapSettingsElem = doc.firstChildElement( "qgis" ).firstChildElement( "snapping-settings" );
if ( snapSettingsElem.isNull() )
{
readLegacySettings();
return;
}
if ( snapSettingsElem.hasAttribute( "enabled" ) )
mEnabled = snapSettingsElem.attribute( "enabled" ) == "1";
if ( snapSettingsElem.hasAttribute( "mode" ) )
mMode = ( SnappingMode )snapSettingsElem.attribute( "mode" ).toInt();
if ( snapSettingsElem.hasAttribute( "type" ) )
mType = ( SnappingType )snapSettingsElem.attribute( "type" ).toInt();
if ( snapSettingsElem.hasAttribute( "tolerance" ) )
mTolerance = snapSettingsElem.attribute( "tolerance" ).toDouble();
if ( snapSettingsElem.hasAttribute( "unit" ) )
mUnits = ( QgsTolerance::UnitType )snapSettingsElem.attribute( "unit" ).toInt();
if ( snapSettingsElem.hasAttribute( "intersection-snapping" ) )
mIntersectionSnapping = snapSettingsElem.attribute( "intersection-snapping" ) == "1";
// do not clear the settings as they must be automatically synchronized with current layers
QDomNodeList nodes = snapSettingsElem.elementsByTagName( "individual-layer-settings" );
if ( nodes.count() )
{
QDomNode node = nodes.item( 0 );
QDomNodeList settingNodes = node.childNodes();
int layerCount = settingNodes.count();
for ( int i = 0; i < layerCount; ++i )
{
QDomElement settingElement = settingNodes.at( i ).toElement();
if ( settingElement.tagName() != "layer-setting" )
{
QgsLogger::warning( QApplication::translate( "QgsProjectSnappingSettings", "Cannot read individual settings. Unexpected tag '%1'" ).arg( settingElement.tagName() ) );
continue;
}
QString layerId = settingElement.attribute( "id" );
bool enabled = settingElement.attribute( "enabled" ) == "1";
SnappingType type = ( SnappingType )settingElement.attribute( "type" ).toInt();
double tolerance = settingElement.attribute( "tolerance" ).toDouble();
QgsTolerance::UnitType units = ( QgsTolerance::UnitType )settingElement.attribute( "units" ).toInt();
bool avoidIntersection = settingElement.attribute( "avoid-intersection" ) == "1";
QgsMapLayer* ml = QgsMapLayerRegistry::instance()->mapLayer( layerId );
if ( !ml || ml->type() != QgsMapLayer::VectorLayer )
continue;
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( ml );
IndividualLayerSettings setting = IndividualLayerSettings( enabled, type, tolerance, units, avoidIntersection );
mIndividualLayerSettings.insert( vl, setting );
}
}
}
void QgsSnappingConfig::writeProject( QDomDocument& doc )
{
QDomElement snapSettingsElem = doc.createElement( "snapping-settings" );
snapSettingsElem.setAttribute( "enabled", QString::number( mEnabled ) );
snapSettingsElem.setAttribute( "mode", ( int )mMode );
snapSettingsElem.setAttribute( "type", ( int )mType );
snapSettingsElem.setAttribute( "tolerance", mTolerance );
snapSettingsElem.setAttribute( "unit", ( int )mUnits );
snapSettingsElem.setAttribute( "intersection-snapping", QString::number( mIntersectionSnapping ) );
QDomElement ilsElement = doc.createElement( "individual-layer-settings" );
Q_FOREACH ( QgsVectorLayer* vl, mIndividualLayerSettings.keys() )
{
IndividualLayerSettings setting = mIndividualLayerSettings.value( vl );
QDomElement layerElement = doc.createElement( "layer-setting" );
layerElement.setAttribute( "id", vl->id() );
layerElement.setAttribute( "enabled", QString::number( setting.enabled() ) );
layerElement.setAttribute( "type", ( int )setting.type() );
layerElement.setAttribute( "tolerance", setting.tolerance() );
layerElement.setAttribute( "units", ( int )setting.units() );
layerElement.setAttribute( "avoid-intersection", QString::number( setting.avoidIntersection() ) );
ilsElement.appendChild( layerElement );
}
snapSettingsElem.appendChild( ilsElement );
doc.firstChildElement( "qgis" ).appendChild( snapSettingsElem );
}
bool QgsSnappingConfig::addLayers( const QList<QgsMapLayer*>& layers )
{
bool changed = false;
bool enabled = QSettings().value( "/qgis/digitizing/default_advanced_snap_enabled", true ).toBool();
SnappingType type = ( SnappingType )QSettings().value( "/qgis/digitizing/default_snap_type", Vertex ).toInt();
double tolerance = QSettings().value( "/qgis/digitizing/default_snapping_tolerance", 0 ).toDouble();
QgsTolerance::UnitType units = ( QgsTolerance::UnitType )QSettings().value( "/qgis/digitizing/default_snapping_tolerance_unit", QgsTolerance::ProjectUnits ).toInt();
Q_FOREACH ( QgsMapLayer* ml, layers )
{
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( ml );
if ( vl )
{
mIndividualLayerSettings.insert( vl, IndividualLayerSettings( enabled, type, tolerance, units ) );
changed = true;
}
}
return changed;
}
bool QgsSnappingConfig::removeLayers( const QList<QgsMapLayer*>& layers )
{
bool changed = false;
Q_FOREACH ( QgsMapLayer* ml, layers )
{
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( ml );
if ( vl )
{
mIndividualLayerSettings.remove( vl );
changed = true;
}
}
return changed;
}
void QgsSnappingConfig::readLegacySettings()
{
mMode = ActiveLayer;
mIndividualLayerSettings.clear();
QString snapMode = QgsProject::instance()->readEntry( "Digitizing", "/SnappingMode" );
QString snapType = QgsProject::instance()->readEntry( "Digitizing", "/DefaultSnapType", QString( "off" ) );
if ( snapType == "to segment" )
mType = Segment;
else if ( snapType == "to vertex and segment" )
mType = VertexAndSegment;
else if ( snapType == "to vertex" )
mType = Vertex;
mTolerance = QgsProject::instance()->readDoubleEntry( "Digitizing", "/DefaultSnapTolerance", 0 );
mUnits = static_cast< QgsTolerance::UnitType >( QgsProject::instance()->readNumEntry( "Digitizing", "/DefaultSnapToleranceUnit", QgsTolerance::ProjectUnits ) );
mIntersectionSnapping = QgsProject::instance()->readNumEntry( "Digitizing", "/IntersectionSnapping", 0 );
//read snapping settings from project
bool snappingDefinedInProject, ok;
QStringList layerIdList = QgsProject::instance()->readListEntry( "Digitizing", "/LayerSnappingList", QStringList(), &snappingDefinedInProject );
QStringList enabledList = QgsProject::instance()->readListEntry( "Digitizing", "/LayerSnappingEnabledList", QStringList(), &ok );
QStringList toleranceList = QgsProject::instance()->readListEntry( "Digitizing", "/LayerSnappingToleranceList", QStringList(), &ok );
QStringList toleranceUnitList = QgsProject::instance()->readListEntry( "Digitizing", "/LayerSnappingToleranceUnitList", QStringList(), &ok );
QStringList snapToList = QgsProject::instance()->readListEntry( "Digitizing", "/LayerSnapToList", QStringList(), &ok );
// lists must have the same size, otherwise something is wrong
if ( layerIdList.size() != enabledList.size() ||
layerIdList.size() != toleranceList.size() ||
layerIdList.size() != toleranceUnitList.size() ||
layerIdList.size() != snapToList.size() )
return;
if ( !snappingDefinedInProject )
return; // nothing defined in project - use current layer
// Use snapping information from the project
if ( snapMode == "current_layer" )
mMode = ActiveLayer;
else if ( snapMode == "all_layers" )
mMode = AllLayers;
else // either "advanced" or empty (for background compatibility)
mMode = AdvancedConfiguration;
// load layers, tolerances, snap type
QStringList::const_iterator layerIt( layerIdList.constBegin() );
QStringList::const_iterator tolIt( toleranceList.constBegin() );
QStringList::const_iterator tolUnitIt( toleranceUnitList.constBegin() );
QStringList::const_iterator snapIt( snapToList.constBegin() );
QStringList::const_iterator enabledIt( enabledList.constBegin() );
for ( ; layerIt != layerIdList.constEnd(); ++layerIt, ++tolIt, ++tolUnitIt, ++snapIt, ++enabledIt )
{
QgsVectorLayer* vlayer = qobject_cast<QgsVectorLayer *>( QgsMapLayerRegistry::instance()->mapLayer( *layerIt ) );
if ( !vlayer || !vlayer->hasGeometryType() )
continue;
SnappingType t( *snapIt == "to_vertex" ? Vertex :
( *snapIt == "to_segment" ? Segment :
VertexAndSegment
)
);
mIndividualLayerSettings.insert( vlayer, IndividualLayerSettings( *enabledIt == "enabled", t, tolIt->toDouble(), static_cast<QgsTolerance::UnitType>( tolUnitIt->toInt() ) ) );
}
}