diff options
Diffstat (limited to 'src/charts/barchart/qbarmodelmapper.cpp')
| -rw-r--r-- | src/charts/barchart/qbarmodelmapper.cpp | 561 |
1 files changed, 561 insertions, 0 deletions
diff --git a/src/charts/barchart/qbarmodelmapper.cpp b/src/charts/barchart/qbarmodelmapper.cpp new file mode 100644 index 00000000..459a72ca --- /dev/null +++ b/src/charts/barchart/qbarmodelmapper.cpp @@ -0,0 +1,561 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc +** All rights reserved. +** For any questions to Digia, please use contact form at http://qt.digia.com +** +** This file is part of the Qt Enterprise Charts Add-on. +** +** $QT_BEGIN_LICENSE$ +** Licensees holding valid Qt Enterprise licenses may use this file in +** accordance with the Qt Enterprise License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. +** +** If you have questions regarding the use of this file, please use +** contact form at http://qt.digia.com +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qbarmodelmapper.h" +#include "qbarmodelmapper_p.h" +#include "qabstractbarseries.h" +#include "qbarset.h" +#include "qchart.h" +#include <QAbstractItemModel> + +QT_CHARTS_BEGIN_NAMESPACE + +QBarModelMapper::QBarModelMapper(QObject *parent) : + QObject(parent), + d_ptr(new QBarModelMapperPrivate(this)) +{ +} + +QAbstractItemModel *QBarModelMapper::model() const +{ + Q_D(const QBarModelMapper); + return d->m_model; +} + +void QBarModelMapper::setModel(QAbstractItemModel *model) +{ + if (model == 0) + return; + + Q_D(QBarModelMapper); + if (d->m_model) + disconnect(d->m_model, 0, d, 0); + + d->m_model = model; + d->initializeBarFromModel(); + // connect signals from the model + connect(d->m_model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), d, SLOT(modelUpdated(QModelIndex,QModelIndex))); + connect(d->m_model, SIGNAL(headerDataChanged(Qt::Orientation,int,int)), d, SLOT(modelHeaderDataUpdated(Qt::Orientation,int,int))); + connect(d->m_model, SIGNAL(rowsInserted(QModelIndex,int,int)), d, SLOT(modelRowsAdded(QModelIndex,int,int))); + connect(d->m_model, SIGNAL(rowsRemoved(QModelIndex,int,int)), d, SLOT(modelRowsRemoved(QModelIndex,int,int))); + connect(d->m_model, SIGNAL(columnsInserted(QModelIndex,int,int)), d, SLOT(modelColumnsAdded(QModelIndex,int,int))); + connect(d->m_model, SIGNAL(columnsRemoved(QModelIndex,int,int)), d, SLOT(modelColumnsRemoved(QModelIndex,int,int))); + connect(d->m_model, SIGNAL(destroyed()), d, SLOT(handleModelDestroyed())); +} + +QAbstractBarSeries *QBarModelMapper::series() const +{ + Q_D(const QBarModelMapper); + return d->m_series; +} + +void QBarModelMapper::setSeries(QAbstractBarSeries *series) +{ + Q_D(QBarModelMapper); + if (d->m_series) + disconnect(d->m_series, 0, d, 0); + + if (series == 0) + return; + + d->m_series = series; + d->initializeBarFromModel(); + // connect the signals from the series + connect(d->m_series, SIGNAL(barsetsAdded(QList<QBarSet*>)), d, SLOT(barSetsAdded(QList<QBarSet*>))); + connect(d->m_series, SIGNAL(barsetsRemoved(QList<QBarSet*>)), d, SLOT(barSetsRemoved(QList<QBarSet*>))); + connect(d->m_series, SIGNAL(destroyed()), d, SLOT(handleSeriesDestroyed())); +} + +/*! + Returns which row/column of the model contains the first values of the QBarSets in the series. + The default value is 0. +*/ +int QBarModelMapper::first() const +{ + Q_D(const QBarModelMapper); + return d->m_first; +} + +/*! + Sets which row of the model contains the \a first values of the QBarSets in the series. + The default value is 0. +*/ +void QBarModelMapper::setFirst(int first) +{ + Q_D(QBarModelMapper); + d->m_first = qMax(first, 0); + d->initializeBarFromModel(); +} + +/*! + Returns the number of rows/columns of the model that are mapped as the data for QAbstractBarSeries + Minimal and default value is: -1 (count limited by the number of rows/columns in the model) +*/ +int QBarModelMapper::count() const +{ + Q_D(const QBarModelMapper); + return d->m_count; +} + +/*! + Sets the \a count of rows/columns of the model that are mapped as the data for QAbstractBarSeries + Minimal and default value is: -1 (count limited by the number of rows/columns in the model) +*/ +void QBarModelMapper::setCount(int count) +{ + Q_D(QBarModelMapper); + d->m_count = qMax(count, -1); + d->initializeBarFromModel(); +} + +/*! + Returns the orientation that is used when QBarModelMapper accesses the model. + This mean whether the consecutive values of the bar set are read from row (Qt::Horizontal) + or from columns (Qt::Vertical) +*/ +Qt::Orientation QBarModelMapper::orientation() const +{ + Q_D(const QBarModelMapper); + return d->m_orientation; +} + +/*! + Returns the \a orientation that is used when QBarModelMapper accesses the model. + This mean whether the consecutive values of the pie are read from row (Qt::Horizontal) + or from columns (Qt::Vertical) +*/ +void QBarModelMapper::setOrientation(Qt::Orientation orientation) +{ + Q_D(QBarModelMapper); + d->m_orientation = orientation; + d->initializeBarFromModel(); +} + +/*! + Returns which section of the model is used as the data source for the first bar set +*/ +int QBarModelMapper::firstBarSetSection() const +{ + Q_D(const QBarModelMapper); + return d->m_firstBarSetSection; +} + +/*! + Sets the model section that is used as the data source for the first bar set + Parameter \a firstBarSetSection specifies the section of the model. +*/ +void QBarModelMapper::setFirstBarSetSection(int firstBarSetSection) +{ + Q_D(QBarModelMapper); + d->m_firstBarSetSection = qMax(-1, firstBarSetSection); + d->initializeBarFromModel(); +} + +/*! + Returns which section of the model is used as the data source for the last bar set +*/ +int QBarModelMapper::lastBarSetSection() const +{ + Q_D(const QBarModelMapper); + return d->m_lastBarSetSection; +} + +/*! + Sets the model section that is used as the data source for the last bar set + Parameter \a lastBarSetSection specifies the section of the model. +*/ +void QBarModelMapper::setLastBarSetSection(int lastBarSetSection) +{ + Q_D(QBarModelMapper); + d->m_lastBarSetSection = qMax(-1, lastBarSetSection); + d->initializeBarFromModel(); +} + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + +QBarModelMapperPrivate::QBarModelMapperPrivate(QBarModelMapper *q) : + QObject(q), + m_series(0), + m_model(0), + m_first(0), + m_count(-1), + m_orientation(Qt::Vertical), + m_firstBarSetSection(-1), + m_lastBarSetSection(-1), + m_seriesSignalsBlock(false), + m_modelSignalsBlock(false), + q_ptr(q) +{ +} + +void QBarModelMapperPrivate::blockModelSignals(bool block) +{ + m_modelSignalsBlock = block; +} + +void QBarModelMapperPrivate::blockSeriesSignals(bool block) +{ + m_seriesSignalsBlock = block; +} + +QBarSet *QBarModelMapperPrivate::barSet(QModelIndex index) +{ + if (!index.isValid()) + return 0; + + if (m_orientation == Qt::Vertical && index.column() >= m_firstBarSetSection && index.column() <= m_lastBarSetSection) { + if (index.row() >= m_first && (m_count == - 1 || index.row() < m_first + m_count)) { + return m_series->barSets().at(index.column() - m_firstBarSetSection); + } + } else if (m_orientation == Qt::Horizontal && index.row() >= m_firstBarSetSection && index.row() <= m_lastBarSetSection) { + if (index.column() >= m_first && (m_count == - 1 || index.column() < m_first + m_count)) + return m_series->barSets().at(index.row() - m_firstBarSetSection); + } + return 0; // This part of model has not been mapped to any slice +} + +QModelIndex QBarModelMapperPrivate::barModelIndex(int barSection, int posInBar) +{ + if (m_count != -1 && posInBar >= m_count) + return QModelIndex(); // invalid + + if (barSection < m_firstBarSetSection || barSection > m_lastBarSetSection) + return QModelIndex(); // invalid + + if (m_orientation == Qt::Vertical) + return m_model->index(posInBar + m_first, barSection); + else + return m_model->index(barSection, posInBar + m_first); +} + +void QBarModelMapperPrivate::handleSeriesDestroyed() +{ + m_series = 0; +} + +void QBarModelMapperPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight) +{ + Q_UNUSED(topLeft) + Q_UNUSED(bottomRight) + + if (m_model == 0 || m_series == 0) + return; + + if (m_modelSignalsBlock) + return; + + blockSeriesSignals(); + QModelIndex index; + for (int row = topLeft.row(); row <= bottomRight.row(); row++) { + for (int column = topLeft.column(); column <= bottomRight.column(); column++) { + index = topLeft.sibling(row, column); + QBarSet *bar = barSet(index); + if (bar) { + if (m_orientation == Qt::Vertical) + bar->replace(row - m_first, m_model->data(index).toReal()); + else + bar->replace(column - m_first, m_model->data(index).toReal()); + } + } + } + blockSeriesSignals(false); +} + +void QBarModelMapperPrivate::modelHeaderDataUpdated(Qt::Orientation orientation, int first, int last) +{ + if (m_model == 0 || m_series == 0) + return; + + if (m_modelSignalsBlock) + return; + + blockSeriesSignals(); + if (orientation != m_orientation) { + for (int section = first; section <= last; section++) { + if (section >= m_firstBarSetSection && section <= m_lastBarSetSection) { + QBarSet *bar = m_series->barSets().at(section - m_firstBarSetSection); + if (bar) + bar->setLabel(m_model->headerData(section, orientation).toString()); + } + } + } + blockSeriesSignals(false); +} + +void QBarModelMapperPrivate::modelRowsAdded(QModelIndex parent, int start, int end) +{ + Q_UNUSED(parent) + if (m_modelSignalsBlock) + return; + + blockSeriesSignals(); + if (m_orientation == Qt::Vertical) + insertData(start, end); + else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize + initializeBarFromModel(); + blockSeriesSignals(false); +} + +void QBarModelMapperPrivate::modelRowsRemoved(QModelIndex parent, int start, int end) +{ + Q_UNUSED(parent) + if (m_modelSignalsBlock) + return; + + blockSeriesSignals(); + if (m_orientation == Qt::Vertical) + removeData(start, end); + else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize + initializeBarFromModel(); + blockSeriesSignals(false); +} + +void QBarModelMapperPrivate::modelColumnsAdded(QModelIndex parent, int start, int end) +{ + Q_UNUSED(parent) + if (m_modelSignalsBlock) + return; + + blockSeriesSignals(); + if (m_orientation == Qt::Horizontal) + insertData(start, end); + else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize + initializeBarFromModel(); + blockSeriesSignals(false); +} + +void QBarModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, int end) +{ + Q_UNUSED(parent) + if (m_modelSignalsBlock) + return; + + blockSeriesSignals(); + if (m_orientation == Qt::Horizontal) + removeData(start, end); + else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize + initializeBarFromModel(); + blockSeriesSignals(false); +} + +void QBarModelMapperPrivate::handleModelDestroyed() +{ + m_model = 0; +} + +void QBarModelMapperPrivate::insertData(int start, int end) +{ + Q_UNUSED(end) + Q_UNUSED(start) + Q_UNUSED(end) + // Currently barchart needs to be fully recalculated when change is made. + // Re-initialize + initializeBarFromModel(); +} + +void QBarModelMapperPrivate::removeData(int start, int end) +{ + Q_UNUSED(end) + Q_UNUSED(start) + Q_UNUSED(end) + // Currently barchart needs to be fully recalculated when change is made. + // Re-initialize + initializeBarFromModel(); +} + +void QBarModelMapperPrivate::barSetsAdded(QList<QBarSet *> sets) +{ + if (m_seriesSignalsBlock) + return; + + if (sets.count() == 0) + return; + + int firstIndex = m_series->barSets().indexOf(sets.at(0)); + if (firstIndex == -1) + return; + + int maxCount = 0; + for (int i = 0; i < sets.count(); i++) { + if (sets.at(i)->count() > m_count) + maxCount = sets.at(i)->count(); + } + + if (m_count != -1 && m_count < maxCount) + m_count = maxCount; + + m_lastBarSetSection += sets.count(); + + blockModelSignals(); + int modelCapacity = m_orientation == Qt::Vertical ? m_model->rowCount() - m_first : m_model->columnCount() - m_first; + if (maxCount > modelCapacity) { + if (m_orientation == Qt::Vertical) + m_model->insertRows(m_model->rowCount(), maxCount - modelCapacity); + else + m_model->insertColumns(m_model->columnCount(), maxCount - modelCapacity); + } + + if (m_orientation == Qt::Vertical) + m_model->insertColumns(firstIndex + m_firstBarSetSection, sets.count()); + else + m_model->insertRows(firstIndex + m_firstBarSetSection, sets.count()); + + + for (int i = firstIndex + m_firstBarSetSection; i < firstIndex + m_firstBarSetSection + sets.count(); i++) { + m_model->setHeaderData(i, m_orientation == Qt::Vertical ? Qt::Horizontal : Qt::Vertical, sets.at(i - firstIndex - m_firstBarSetSection)->label()); + for (int j = 0; j < sets.at(i - firstIndex - m_firstBarSetSection)->count(); j++) + m_model->setData(barModelIndex(i, j), sets.at(i - firstIndex - m_firstBarSetSection)->at(j)); + } + blockModelSignals(false); + initializeBarFromModel(); +} + +void QBarModelMapperPrivate::barSetsRemoved(QList<QBarSet *> sets) +{ + if (m_seriesSignalsBlock) + return; + + if (sets.count() == 0) + return; + + int firstIndex = m_barSets.indexOf(sets.at(0)); + if (firstIndex == -1) + return; + + m_lastBarSetSection -= sets.count(); + + for (int i = firstIndex + sets.count() - 1; i >= firstIndex; i--) + m_barSets.removeAt(i); + + blockModelSignals(); + if (m_orientation == Qt::Vertical) + m_model->removeColumns(firstIndex + m_firstBarSetSection, sets.count()); + else + m_model->removeRows(firstIndex + m_firstBarSetSection, sets.count()); + blockModelSignals(false); + initializeBarFromModel(); +} + +void QBarModelMapperPrivate::valuesAdded(int index, int count) +{ + if (m_seriesSignalsBlock) + return; + + if (m_count != -1) + m_count += count; + + int barSetIndex = m_barSets.indexOf(qobject_cast<QBarSet *>(QObject::sender())); + + blockModelSignals(); + if (m_orientation == Qt::Vertical) + m_model->insertRows(index + m_first, count); + else + m_model->insertColumns(index + m_first, count); + + for (int j = index; j < index + count; j++) + m_model->setData(barModelIndex(barSetIndex + m_firstBarSetSection, j), m_barSets.at(barSetIndex)->at(j)); + + blockModelSignals(false); + initializeBarFromModel(); +} + +void QBarModelMapperPrivate::valuesRemoved(int index, int count) +{ + if (m_seriesSignalsBlock) + return; + + if (m_count != -1) + m_count -= count; + + blockModelSignals(); + if (m_orientation == Qt::Vertical) + m_model->removeRows(index + m_first, count); + else + m_model->removeColumns(index + m_first, count); + + blockModelSignals(false); + initializeBarFromModel(); +} + +void QBarModelMapperPrivate::barLabelChanged() +{ + if (m_seriesSignalsBlock) + return; + + int barSetIndex = m_barSets.indexOf(qobject_cast<QBarSet *>(QObject::sender())); + + blockModelSignals(); + m_model->setHeaderData(barSetIndex + m_firstBarSetSection, m_orientation == Qt::Vertical ? Qt::Horizontal : Qt::Vertical, m_barSets.at(barSetIndex)->label()); + blockModelSignals(false); + initializeBarFromModel(); +} + +void QBarModelMapperPrivate::barValueChanged(int index) +{ + if (m_seriesSignalsBlock) + return; + + int barSetIndex = m_barSets.indexOf(qobject_cast<QBarSet *>(QObject::sender())); + + blockModelSignals(); + m_model->setData(barModelIndex(barSetIndex + m_firstBarSetSection, index), m_barSets.at(barSetIndex)->at(index)); + blockModelSignals(false); + initializeBarFromModel(); +} + +void QBarModelMapperPrivate::initializeBarFromModel() +{ + if (m_model == 0 || m_series == 0) + return; + + blockSeriesSignals(); + // clear current content + m_series->clear(); + m_barSets.clear(); + + // create the initial bar sets + for (int i = m_firstBarSetSection; i <= m_lastBarSetSection; i++) { + int posInBar = 0; + QModelIndex barIndex = barModelIndex(i, posInBar); + // check if there is such model index + if (barIndex.isValid()) { + QBarSet *barSet = new QBarSet(m_model->headerData(i, m_orientation == Qt::Vertical ? Qt::Horizontal : Qt::Vertical).toString()); + while (barIndex.isValid()) { + barSet->append(m_model->data(barIndex, Qt::DisplayRole).toDouble()); + posInBar++; + barIndex = barModelIndex(i, posInBar); + } + connect(barSet, SIGNAL(valuesAdded(int,int)), this, SLOT(valuesAdded(int,int))); + connect(barSet, SIGNAL(valuesRemoved(int,int)), this, SLOT(valuesRemoved(int,int))); + connect(barSet, SIGNAL(valueChanged(int)), this, SLOT(barValueChanged(int))); + connect(barSet, SIGNAL(labelChanged()), this, SLOT(barLabelChanged())); + m_series->append(barSet); + m_barSets.append(barSet); + } else { + break; + } + } + blockSeriesSignals(false); +} + +#include "moc_qbarmodelmapper.cpp" +#include "moc_qbarmodelmapper_p.cpp" + +QT_CHARTS_END_NAMESPACE |