qbarmodelmapper.cpp
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CppLexer
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r0 | /**************************************************************************** | ||
** | ||||
** 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 <QtCharts/QBarModelMapper> | ||||
#include <private/qbarmodelmapper_p.h> | ||||
#include <QtCharts/QAbstractBarSeries> | ||||
#include <QtCharts/QBarSet> | ||||
#include <QtCharts/QChart> | ||||
#include <QtCore/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 | ||||