/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the Qt Charts module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:GPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3 or (at your option) any later version ** approved by the KDE Free Qt Foundation. The licenses are as published by ** the Free Software Foundation and appearing in the file LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include QT_CHARTS_BEGIN_NAMESPACE /*! \class QHBarModelMapper \inmodule QtCharts \brief The QHBarModelMapper class is a horizontal model mapper for bar series. Model mappers enable using a data model derived from the QAbstractItemModel class as a data source for a chart. A horizontal model mapper is used to create a connection between a data model and QAbstractBarSeries, so that each row in the data model defines a bar set and each column maps to a category in a bar series. Both model and bar series properties can be used to manipulate the data. The model mapper keeps the bar series and the data model in sync. The model mapper ensures that all the bar sets in the bar series have equal sizes. Therefore, adding or removing a value from a bar set causes the same change to be made in all the bar sets in the bar series. \sa QVBarModelMapper */ /*! \qmltype HBarModelMapper \instantiates QHBarModelMapper \inqmlmodule QtCharts \brief Horizontal model mapper for bar series. The HBarModelMapper type enables using a data model derived from the QAbstractItemModel class as a data source for a chart. A horizontal model mapper is used to create a connection between a data model and AbstractBarSeries, so that each row in the data model defines a bar set and each column maps to a category in a bar series. You need to implement the data model and expose it to QML. Both model and bar series properties can be used to manipulate the data. The model mapper keeps the bar series and the data model in sync. The model mapper ensures that all the bar sets in the bar series have equal sizes. Therefore, adding or removing a value from a bar set causes the same change to be made in all the bar sets in the bar series. The following QML code snippet creates a bar series with three bar sets (assuming the model has at least four rows). Each bar set contains data starting from column 1. The name of a bar set is defined by the row header. \code BarSeries { HBarModelMapper { model: myCustomModel // QAbstractItemModel derived implementation firstBarSetRow: 1 lastBarSetRow: 3 firstColumn: 1 } } \endcode \sa VBarModelMapper */ /*! \property QHBarModelMapper::series \brief The bar series that is used by the mapper. All the data in the series is discarded when it is set to the mapper. When a new series is specified, the old series is disconnected (but it preserves its data). */ /*! \qmlproperty AbstractBarSeries HBarModelMapper::series The bar series that is used by the mapper. All the data in the series is discarded when it is set to the mapper. When the new series is specified, the old series is disconnected (but it preserves its data). */ /*! \property QHBarModelMapper::model \brief Defines the model that is used by the mapper. */ /*! \qmlproperty SomeModel HBarModelMapper::model The data model that is used by the mapper. You need to implement the model and expose it to QML. \note The model has to support adding and removing rows or columns and modifying the data in the cells. */ /*! \property QHBarModelMapper::firstBarSetRow \brief The row of the model that is used as the data source for the first bar set. The default value is -1 (invalid mapping). */ /*! \qmlproperty int HBarModelMapper::firstBarSetRow Defines which row of the model is used as the data source for the first bar set. The default value is -1 (invalid mapping). */ /*! \property QHBarModelMapper::lastBarSetRow \brief The row of the model that is used as the data source for the last bar set. The default value is -1 (invalid mapping). */ /*! \qmlproperty int HBarModelMapper::lastBarSetRow The row of the model that is used as the data source for the last bar set. The default value is -1 (invalid mapping). */ /*! \property QHBarModelMapper::firstColumn \brief The column of the model that contains the first values of the bar sets in the bar series. The minimum and default value is 0. */ /*! \qmlproperty int HBarModelMapper::firstColumn The column of the model that contains the first values of the bar sets in the bar series. The default value is 0. */ /*! \property QHBarModelMapper::columnCount \brief The number of columns of the model that are mapped as the data for the bar series. The minimum and default value is -1 (number limited to the number of columns in the model). */ /*! \qmlproperty int HBarModelMapper::columnCount The number of columns of the model that are mapped as the data for the bar series. The default value is -1 (number limited to the number of columns in the model). */ /*! \fn void QHBarModelMapper::seriesReplaced() This signal is emitted when the series that the mapper is connected to changes. */ /*! \fn void QHBarModelMapper::modelReplaced() This signal is emitted when the model that the mapper is connected to changes. */ /*! \fn void QHBarModelMapper::firstBarSetRowChanged() This signal is emitted when the first bar set row changes. */ /*! \fn void QHBarModelMapper::lastBarSetRowChanged() This signal is emitted when the last bar set row changes. */ /*! \fn void QHBarModelMapper::firstColumnChanged() This signal is emitted when the first column changes. */ /*! \fn void QHBarModelMapper::columnCountChanged() This signal is emitted when the number of columns changes. */ /*! Constructs a mapper object that is a child of \a parent. */ QHBarModelMapper::QHBarModelMapper(QObject *parent) : QBarModelMapper(parent) { QBarModelMapper::setOrientation(Qt::Horizontal); } QAbstractItemModel *QHBarModelMapper::model() const { return QBarModelMapper::model(); } void QHBarModelMapper::setModel(QAbstractItemModel *model) { if (model != QBarModelMapper::model()) { QBarModelMapper::setModel(model); emit modelReplaced(); } } QAbstractBarSeries *QHBarModelMapper::series() const { return QBarModelMapper::series(); } void QHBarModelMapper::setSeries(QAbstractBarSeries *series) { if (series != QBarModelMapper::series()) { QBarModelMapper::setSeries(series); emit seriesReplaced(); } } int QHBarModelMapper::firstBarSetRow() const { return QBarModelMapper::firstBarSetSection(); } void QHBarModelMapper::setFirstBarSetRow(int firstBarSetRow) { if (firstBarSetRow != firstBarSetSection()) { QBarModelMapper::setFirstBarSetSection(firstBarSetRow); emit firstBarSetRowChanged(); } } int QHBarModelMapper::lastBarSetRow() const { return QBarModelMapper::lastBarSetSection(); } void QHBarModelMapper::setLastBarSetRow(int lastBarSetRow) { if (lastBarSetRow != lastBarSetSection()) { QBarModelMapper::setLastBarSetSection(lastBarSetRow); emit lastBarSetRowChanged(); } } int QHBarModelMapper::firstColumn() const { return QBarModelMapper::first(); } void QHBarModelMapper::setFirstColumn(int firstColumn) { if (firstColumn != first()) { QBarModelMapper::setFirst(firstColumn); emit firstColumnChanged(); } } int QHBarModelMapper::columnCount() const { return QBarModelMapper::count(); } void QHBarModelMapper::setColumnCount(int columnCount) { if (columnCount != count()) { QBarModelMapper::setCount(columnCount); emit columnCountChanged(); } } #include "moc_qhbarmodelmapper.cpp" QT_CHARTS_END_NAMESPACE