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/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd
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** All rights reserved.
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** For any questions to The Qt Company, please use contact form at http://qt.io
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**
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** This file is part of the Qt Charts module.
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**
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** Licensees holding valid commercial license for Qt may use this file in
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** accordance with the Qt License Agreement provided with the Software
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** or, alternatively, in accordance with the terms contained in a written
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** agreement between you and The Qt Company.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.io
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**
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****************************************************************************/
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#include <QtCharts/QVPieModelMapper>
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QT_CHARTS_BEGIN_NAMESPACE
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/*!
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\class QVPieModelMapper
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\inmodule Qt Charts
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\brief Vertical model mapper for pie series.
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Model mappers allow you to use QAbstractItemModel derived models as a data source for a chart series.
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Vertical model mapper is used to create a connection between QPieSeries and QAbstractItemModel derived model object that keeps the consecutive pie slices data in columns.
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It is possible to use both QAbstractItemModel and QPieSeries model API. QVPieModelMapper makes sure that Pie and the model are kept in sync.
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\note Used model has to support adding/removing rows/columns and modifying the data of the cells.
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*/
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/*!
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\qmltype VPieModelMapper
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\instantiates QVPieModelMapper
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\inqmlmodule QtCharts
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\brief Vertical model mapper for pie series.
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VPieModelMapper allows you to use your own QAbstractItemModel derived model with data in columns
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as a data source for a pie series. It is possible to use both QAbstractItemModel and PieSeries
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data API to manipulate data. VPieModelMapper keeps the Pie and the model in sync.
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The following QML example would create a pie series with four slices (assuming the model has at
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least five rows). Each slice would contain a label from column 1 and a value from column 2.
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\code
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VPieModelMapper {
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series: pieSeries
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model: customModel
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labelsColumn: 1
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valuesColumn: 2
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firstRow: 1
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rowCount: 4
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}
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\endcode
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*/
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/*!
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\property QVPieModelMapper::series
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\brief Defines the QPieSeries object that is used by the mapper.
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All the data in the series is discarded when it is set to the mapper.
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When new series is specified the old series is disconnected (it preserves its data)
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*/
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/*!
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\qmlproperty PieSeries VPieModelMapper::series
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Defines the PieSeries object that is used by the mapper. If you define the mapper element as a child for a
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PieSeries, leave this property undefined. All the data in the series is discarded when it is set to the mapper.
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When new series is specified the old series is disconnected (it preserves its data).
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*/
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/*!
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\property QVPieModelMapper::model
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\brief Defines the model that is used by the mapper.
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*/
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/*!
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\qmlproperty SomeModel VPieModelMapper::model
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The QAbstractItemModel based model that is used by the mapper. You need to implement the model
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and expose it to QML. Note: the model has to support adding/removing rows/columns and modifying
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the data of the cells.
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*/
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/*!
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\property QVPieModelMapper::valuesColumn
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\brief Defines which column of the model is kept in sync with the values of the pie's slices.
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Default value is: -1 (invalid mapping)
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*/
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/*!
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\qmlproperty int VPieModelMapper::valuesColumn
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Defines which column of the model is kept in sync with the values of the pie's slices. Default value is -1 (invalid
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mapping).
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*/
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/*!
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\property QVPieModelMapper::labelsColumn
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\brief Defines which column of the model is kept in sync with the labels of the pie's slices.
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Default value is: -1 (invalid mapping)
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*/
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/*!
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\qmlproperty int VPieModelMapper::labelsColumn
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Defines which column of the model is kept in sync with the labels of the pie's slices. Default value is -1 (invalid
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mapping).
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*/
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/*!
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\property QVPieModelMapper::firstRow
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\brief Defines which row of the model contains the first slice value.
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Minimal and default value is: 0
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*/
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/*!
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\qmlproperty int VPieModelMapper::firstRow
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Defines which row of the model contains the first slice value.
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The default value is 0.
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*/
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/*!
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\property QVPieModelMapper::rowCount
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\brief Defines the number of rows of the model that are mapped as the data for QPieSeries.
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Minimal and default value is: -1 (count limited by the number of rows in the model)
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*/
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/*!
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\qmlproperty int VPieModelMapper::columnCount
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Defines the number of rows of the model that are mapped as the data for QPieSeries. The default value is
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-1 (count limited by the number of rows in the model)
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*/
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/*!
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\fn void QVPieModelMapper::seriesReplaced()
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Emitted when the series to which mapper is connected to has changed.
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*/
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/*!
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\fn void QVPieModelMapper::modelReplaced()
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Emitted when the model to which mapper is connected to has changed.
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*/
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/*!
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\fn void QVPieModelMapper::valuesColumnChanged()
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Emitted when the valuesColumn has changed.
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*/
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/*!
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\fn void QVPieModelMapper::labelsColumnChanged()
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Emitted when the labelsColumn has changed.
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*/
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/*!
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\fn void QVPieModelMapper::firstRowChanged()
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Emitted when the firstRow has changed.
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*/
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/*!
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\fn void QVPieModelMapper::rowCountChanged()
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Emitted when the rowCount has changed.
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*/
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/*!
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Constructs a mapper object which is a child of \a parent.
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*/
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QVPieModelMapper::QVPieModelMapper(QObject *parent) :
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QPieModelMapper(parent)
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{
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QPieModelMapper::setOrientation(Qt::Vertical);
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}
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QAbstractItemModel *QVPieModelMapper::model() const
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{
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return QPieModelMapper::model();
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}
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void QVPieModelMapper::setModel(QAbstractItemModel *model)
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{
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if (model != QPieModelMapper::model()) {
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QPieModelMapper::setModel(model);
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emit modelReplaced();
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}
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}
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QPieSeries *QVPieModelMapper::series() const
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{
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return QPieModelMapper::series();
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}
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void QVPieModelMapper::setSeries(QPieSeries *series)
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{
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if (series != QPieModelMapper::series()) {
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QPieModelMapper::setSeries(series);
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emit seriesReplaced();
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}
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}
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/*!
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Returns which column of the model is kept in sync with the values of the pie's slices
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*/
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int QVPieModelMapper::valuesColumn() const
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{
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return QPieModelMapper::valuesSection();
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}
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/*!
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Sets the model column that is kept in sync with the pie slices values.
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Parameter \a valuesColumn specifies the row of the model.
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*/
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void QVPieModelMapper::setValuesColumn(int valuesColumn)
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{
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if (valuesColumn != valuesSection()) {
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QPieModelMapper::setValuesSection(valuesColumn);
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emit valuesColumnChanged();
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}
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}
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/*!
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Returns which column of the model is kept in sync with the labels of the pie's slices
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*/
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int QVPieModelMapper::labelsColumn() const
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{
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return QPieModelMapper::labelsSection();
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}
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/*!
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Sets the model column that is kept in sync with the pie's slices labels.
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Parameter \a labelsColumn specifies the row of the model.
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*/
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void QVPieModelMapper::setLabelsColumn(int labelsColumn)
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{
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if (labelsColumn != labelsSection()) {
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QPieModelMapper::setLabelsSection(labelsColumn);
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emit labelsColumnChanged();
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}
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}
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int QVPieModelMapper::firstRow() const
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{
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return first();
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}
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void QVPieModelMapper::setFirstRow(int firstRow)
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{
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if (firstRow != first()) {
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setFirst(firstRow);
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emit firstRowChanged();
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}
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}
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int QVPieModelMapper::rowCount() const
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{
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return count();
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}
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void QVPieModelMapper::setRowCount(int rowCount)
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{
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if (rowCount != count()) {
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setCount(rowCount);
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emit rowCountChanged();
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}
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}
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#include "moc_qvpiemodelmapper.cpp"
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QT_CHARTS_END_NAMESPACE
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