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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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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.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qbarmodelmapper.h"
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#include "qbarmodelmapper_p.h"
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#include "qbarseries.h"
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#include "qbarset.h"
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#include "qchart.h"
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#include <QAbstractItemModel>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\class QBarModelMapper
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\brief part of QtCommercial chart API.
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\mainclass
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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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The instance of this class cannot be created directly. QHBarModelMapper of QVBarModelMapper should be used instead. This class is used to create a connection between QBarSeries and QAbstractItemModel derived model object.
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Curently it is NOT possible to use both QAbstractItemModel and QBarSeries model API.
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When the series is set to the mapper the QBarSeries and QBarSet API that affect the data (append, setValue, remove) should not be used.
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The model and the QBarSeries won't be kept in sync. Model API should be used to insert,remove,modify BarSets.
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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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\property QBarModelMapper::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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\property QBarModelMapper::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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\property QBarModelMapper::first
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\brief Defines which item of the model's row/column should be mapped as the value of the first QBarSet in the series.
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Minimal and default value is: 0
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*/
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/*!
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\property QBarModelMapper::count
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\brief Defines the number of rows/columns of the model that are mapped as the data for QBarSeries
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Minimal and default value is: -1 (count limited by the number of rows/columns in the model)
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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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QBarModelMapper::QBarModelMapper(QObject *parent) :
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QObject(parent),
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d_ptr(new QBarModelMapperPrivate(this))
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{
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}
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QAbstractItemModel* QBarModelMapper::model() const
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{
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Q_D(const QBarModelMapper);
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return d->m_model;
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}
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void QBarModelMapper::setModel(QAbstractItemModel *model)
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{
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if (model == 0)
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return;
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Q_D(QBarModelMapper);
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if (d->m_model) {
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disconnect(d->m_model, 0, d, 0);
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}
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d->m_model = model;
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d->initializeBarFromModel();
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// connect signals from the model
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connect(d->m_model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), d, SLOT(modelUpdated(QModelIndex,QModelIndex)));
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connect(d->m_model, SIGNAL(headerDataChanged(Qt::Orientation,int,int)), d, SLOT(modelHeaderDataUpdated(Qt::Orientation,int,int)));
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connect(d->m_model, SIGNAL(rowsInserted(QModelIndex,int,int)), d, SLOT(modelRowsAdded(QModelIndex,int,int)));
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connect(d->m_model, SIGNAL(rowsRemoved(QModelIndex,int,int)), d, SLOT(modelRowsRemoved(QModelIndex,int,int)));
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connect(d->m_model, SIGNAL(columnsInserted(QModelIndex,int,int)), d, SLOT(modelColumnsAdded(QModelIndex,int,int)));
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connect(d->m_model, SIGNAL(columnsRemoved(QModelIndex,int,int)), d, SLOT(modelColumnsRemoved(QModelIndex,int,int)));
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}
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QBarSeries* QBarModelMapper::series() const
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{
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Q_D(const QBarModelMapper);
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return d->m_series;
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}
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void QBarModelMapper::setSeries(QBarSeries *series)
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{
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Q_D(QBarModelMapper);
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if (d->m_series) {
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disconnect(d->m_series, 0, d, 0);
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}
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if (series == 0)
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return;
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d->m_series = series;
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d->initializeBarFromModel();
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// connect the signals from the series
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// TODO: TO be implemented
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}
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int QBarModelMapper::first() const
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{
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Q_D(const QBarModelMapper);
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return d->m_first;
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}
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void QBarModelMapper::setFirst(int first)
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{
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Q_D(QBarModelMapper);
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d->m_first = qMax(first, 0);
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d->initializeBarFromModel();
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}
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int QBarModelMapper::count() const
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{
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Q_D(const QBarModelMapper);
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return d->m_count;
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}
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void QBarModelMapper::setCount(int count)
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{
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Q_D(QBarModelMapper);
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d->m_count = qMax(count, -1);
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d->initializeBarFromModel();
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}
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/*!
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Returns the orientation that is used when QBarModelMapper accesses the model.
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This mean whether the consecutive values of the bar set are read from row (Qt::Horizontal)
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or from columns (Qt::Vertical)
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*/
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Qt::Orientation QBarModelMapper::orientation() const
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{
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Q_D(const QBarModelMapper);
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return d->m_orientation;
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}
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/*!
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Returns the \a orientation that is used when QBarModelMapper accesses the model.
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This mean whether the consecutive values of the pie are read from row (Qt::Horizontal)
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or from columns (Qt::Vertical)
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*/
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void QBarModelMapper::setOrientation(Qt::Orientation orientation)
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{
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Q_D(QBarModelMapper);
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d->m_orientation = orientation;
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d->initializeBarFromModel();
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}
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/*!
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Returns which section of the model is used as the data source for the first bar set
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*/
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int QBarModelMapper::firstBarSetSection() const
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{
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Q_D(const QBarModelMapper);
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return d->m_firstBarSetSection;
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}
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/*!
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Sets the model section that is used as the data source for the first bar set
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Parameter \a firstBarSetSection specifies the section of the model.
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*/
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void QBarModelMapper::setFirstBarSetSection(int firstBarSetSection)
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{
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Q_D(QBarModelMapper);
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d->m_firstBarSetSection = qMax(-1, firstBarSetSection);
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d->initializeBarFromModel();
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}
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/*!
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Returns which section of the model is used as the data source for the last bar set
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*/
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int QBarModelMapper::lastBarSetSection() const
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{
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Q_D(const QBarModelMapper);
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return d->m_lastBarSetSection;
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}
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/*!
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Sets the model section that is used as the data source for the last bar set
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Parameter \a lastBarSetSection specifies the section of the model.
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*/
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void QBarModelMapper::setLastBarSetSection(int lastBarSetSection)
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{
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Q_D(QBarModelMapper);
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d->m_lastBarSetSection = qMax(-1, lastBarSetSection);
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d->initializeBarFromModel();
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}
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/*!
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Resets the QBarModelMapper to the default state.
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first: 0; count: -1; firstBarSetSection: -1; lastBarSetSection: -1; categoriesSection: -1
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*/
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void QBarModelMapper::reset()
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{
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Q_D(QBarModelMapper);
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d->m_first = 0;
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d->m_count = -1;
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d->m_firstBarSetSection = -1;
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d->m_lastBarSetSection = -1;
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d->initializeBarFromModel();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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QBarModelMapperPrivate::QBarModelMapperPrivate(QBarModelMapper *q) :
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m_series(0),
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m_model(0),
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m_first(0),
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m_count(-1),
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m_orientation(Qt::Vertical),
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m_firstBarSetSection(-1),
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m_lastBarSetSection(-1),
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m_seriesSignalsBlock(false),
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m_modelSignalsBlock(false),
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q_ptr(q)
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{
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}
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void QBarModelMapperPrivate::blockModelSignals(bool block)
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{
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m_modelSignalsBlock = block;
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}
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void QBarModelMapperPrivate::blockSeriesSignals(bool block)
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{
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m_seriesSignalsBlock = block;
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}
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QBarSet* QBarModelMapperPrivate::barSet(QModelIndex index)
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{
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if (!index.isValid())
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return 0;
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if (m_orientation == Qt::Vertical && index.column() >= m_firstBarSetSection && index.column() <= m_lastBarSetSection) {
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if (index.row() >= m_first && (m_count == - 1 || index.row() < m_first + m_count)) {
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// if (m_model->index(index.row(), m_valuesSection).isValid() && m_model->index(index.row(), m_labelsSection).isValid())
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return m_series->barSets().at(index.column() - m_firstBarSetSection);
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// else
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// return 0;
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}
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} else if (m_orientation == Qt::Horizontal && index.row() >= m_firstBarSetSection && index.row() <= m_lastBarSetSection) {
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if (index.column() >= m_first && (m_count == - 1 || index.column() < m_first + m_count))
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return m_series->barSets().at(index.row() - m_firstBarSetSection);
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}
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return 0; // This part of model has not been mapped to any slice
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}
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QModelIndex QBarModelMapperPrivate::barModelIndex(int barSection, int posInBar)
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{
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if (m_count != -1 && posInBar >= m_count)
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return QModelIndex(); // invalid
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if (barSection < m_firstBarSetSection || barSection > m_lastBarSetSection)
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return QModelIndex(); // invalid
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if (m_orientation == Qt::Vertical)
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return m_model->index(posInBar + m_first, barSection);
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else
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return m_model->index(barSection, posInBar + m_first);
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}
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void QBarModelMapperPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
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{
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Q_UNUSED(topLeft)
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Q_UNUSED(bottomRight)
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if (m_model == 0 || m_series == 0)
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return;
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if (m_modelSignalsBlock)
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return;
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blockSeriesSignals();
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QModelIndex index;
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for (int row = topLeft.row(); row <= bottomRight.row(); row++) {
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for (int column = topLeft.column(); column <= bottomRight.column(); column++) {
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index = topLeft.sibling(row, column);
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QBarSet* bar = barSet(index);
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if (bar) {
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if (m_orientation == Qt::Vertical)
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bar->replace(row - m_first, m_model->data(index).toReal());
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else
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bar->replace(column - m_first, m_model->data(index).toReal());
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}
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}
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}
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blockSeriesSignals(false);
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}
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void QBarModelMapperPrivate::modelHeaderDataUpdated(Qt::Orientation orientation, int first, int last)
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{
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if (m_model == 0 || m_series == 0)
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return;
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if (m_modelSignalsBlock)
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return;
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blockSeriesSignals();
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if (orientation != m_orientation) {
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for (int section = first; section <= last; section++) {
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if (section >= m_firstBarSetSection && section <= m_lastBarSetSection) {
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QBarSet* bar = m_series->barSets().at(section - m_firstBarSetSection);
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if (bar)
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bar->setName(m_model->headerData(section, orientation).toString());
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}
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}
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}
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blockSeriesSignals(false);
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}
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void QBarModelMapperPrivate::modelRowsAdded(QModelIndex parent, int start, int end)
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{
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Q_UNUSED(parent);
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Q_UNUSED(end)
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if (m_modelSignalsBlock)
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return;
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blockSeriesSignals();
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if (m_orientation == Qt::Vertical)
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// insertData(start, end);
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initializeBarFromModel();
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else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize
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initializeBarFromModel();
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blockSeriesSignals(false);
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}
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void QBarModelMapperPrivate::modelRowsRemoved(QModelIndex parent, int start, int end)
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{
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Q_UNUSED(parent);
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Q_UNUSED(end)
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if (m_modelSignalsBlock)
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return;
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blockSeriesSignals();
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if (m_orientation == Qt::Vertical)
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// removeData(start, end);
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initializeBarFromModel();
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else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize
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initializeBarFromModel();
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blockSeriesSignals(false);
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}
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void QBarModelMapperPrivate::modelColumnsAdded(QModelIndex parent, int start, int end)
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{
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Q_UNUSED(parent);
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Q_UNUSED(end)
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if (m_modelSignalsBlock)
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return;
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blockSeriesSignals();
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if (m_orientation == Qt::Horizontal)
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// insertData(start, end);
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initializeBarFromModel();
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else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize
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initializeBarFromModel();
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blockSeriesSignals(false);
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}
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void QBarModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, int end)
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{
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Q_UNUSED(parent);
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Q_UNUSED(end)
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if (m_modelSignalsBlock)
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return;
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blockSeriesSignals();
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if (m_orientation == Qt::Horizontal)
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// removeData(start, end);
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initializeBarFromModel();
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else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize
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initializeBarFromModel();
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blockSeriesSignals(false);
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}
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void QBarModelMapperPrivate::insertData(int start, int end)
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{
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Q_UNUSED(end)
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Q_UNUSED(start)
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Q_UNUSED(end)
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// To be implemented
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}
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void QBarModelMapperPrivate::removeData(int start, int end)
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{
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Q_UNUSED(end)
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Q_UNUSED(start)
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Q_UNUSED(end)
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// To be implemented
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}
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void QBarModelMapperPrivate::initializeBarFromModel()
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{
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if (m_model == 0 || m_series == 0)
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return;
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blockSeriesSignals();
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// clear current content
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m_series->clear();
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// create the initial bar sets
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for (int i = m_firstBarSetSection; i <= m_lastBarSetSection; i++) {
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int posInBar = 0;
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QModelIndex barIndex = barModelIndex(i, posInBar);
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// check if there is such model index
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if (barIndex.isValid()) {
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QBarSet *barSet = new QBarSet(m_model->headerData(i, m_orientation == Qt::Vertical ? Qt::Horizontal : Qt::Vertical).toString());
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while (barIndex.isValid()) {
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barSet->append(m_model->data(barIndex, Qt::DisplayRole).toDouble());
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posInBar++;
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|
|
barIndex = barModelIndex(i, posInBar);
|
|
|
}
|
|
|
m_series->append(barSet);
|
|
|
} else {
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
blockSeriesSignals(false);
|
|
|
}
|
|
|
|
|
|
#include "moc_qbarmodelmapper.cpp"
|
|
|
#include "moc_qbarmodelmapper_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
