QGIS API Documentation
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src
core
labeling
qgslabelthinningsettings.h
Go to the documentation of this file.
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/***************************************************************************
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qgslabelthinningsettings.h
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--------------------------
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Date : December 2019
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Copyright : (C) 2019 by Nyall Dawson
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Email : nyall dot dawson at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef QGSLABELTHINNINGSETTINGS_H
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#define QGSLABELTHINNINGSETTINGS_H
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#include "qgis_core.h"
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#include "
qgis_sip.h
"
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class
QgsPropertyCollection
;
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class
QgsExpressionContext
;
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class
CORE_EXPORT
QgsLabelThinningSettings
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{
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public
:
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bool
limitNumberOfLabelsEnabled
()
const
{
return
mLimitNumLabels; }
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void
setLimitNumberLabelsEnabled
(
bool
enabled ) { mLimitNumLabels = enabled; }
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int
maximumNumberLabels
()
const
{
return
mMaxNumLabels; }
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void
setMaximumNumberLabels
(
int
number ) { mMaxNumLabels = number; }
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double
minimumFeatureSize
()
const
{
return
mMinFeatureSize; }
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void
setMinimumFeatureSize
(
double
size ) { mMinFeatureSize = size; }
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void
updateDataDefinedProperties(
const
QgsPropertyCollection
&properties,
QgsExpressionContext
&context );
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private
:
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bool
mLimitNumLabels =
false
;
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int
mMaxNumLabels = 2000;
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double
mMinFeatureSize = 0;
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};
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#endif
// QGSLABELTHINNINGSETTINGS_H
QgsExpressionContext
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
Definition
qgsexpressioncontext.h:471
QgsLabelThinningSettings
Contains settings related to how the label engine removes candidate label positions and reduces the n...
Definition
qgslabelthinningsettings.h:35
QgsLabelThinningSettings::setMaximumNumberLabels
void setMaximumNumberLabels(int number)
Sets the maximum number of labels which should be drawn for this layer.
Definition
qgslabelthinningsettings.h:66
QgsLabelThinningSettings::minimumFeatureSize
double minimumFeatureSize() const
Returns the minimum feature size (in millimeters) for a feature to be labelled.
Definition
qgslabelthinningsettings.h:72
QgsLabelThinningSettings::maximumNumberLabels
int maximumNumberLabels() const
Returns the maximum number of labels which should be drawn for this layer.
Definition
qgslabelthinningsettings.h:58
QgsLabelThinningSettings::setLimitNumberLabelsEnabled
void setLimitNumberLabelsEnabled(bool enabled)
Sets whether the the number of labels drawn for the layer should be limited.
Definition
qgslabelthinningsettings.h:50
QgsLabelThinningSettings::limitNumberOfLabelsEnabled
bool limitNumberOfLabelsEnabled() const
Returns true if the number of labels drawn for the layer should be limited.
Definition
qgslabelthinningsettings.h:43
QgsLabelThinningSettings::setMinimumFeatureSize
void setMinimumFeatureSize(double size)
Sets the minimum feature size (in millimeters) for a feature to be labelled.
Definition
qgslabelthinningsettings.h:78
QgsPropertyCollection
A grouped map of multiple QgsProperty objects, each referenced by a integer key value.
Definition
qgspropertycollection.h:344
qgis_sip.h
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