##// END OF EJS Templates
No longer automatically disable QDateTimeAxis on ARM platforms...
No longer automatically disable QDateTimeAxis on ARM platforms QDateTimeAxis is now only disabled on platforms that define qreal as float. Change-Id: I08d393d328c972d74b27bd218e4cd01e844800c9 Reviewed-by: Tomi Korpipää <tomi.korpipaa@theqtcompany.com> Reviewed-by: Mika Salmela <mika.salmela@theqtcompany.com> Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>

File last commit:

r2854:46147b040d06
r2861:21c113d296ef
Show More
qxymodelmapper.cpp
562 lines | 17.1 KiB | text/x-c | CppLexer
/****************************************************************************
**
** 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/QXYModelMapper>
#include <private/qxymodelmapper_p.h>
#include <QtCharts/QXYSeries>
#include <QtCore/QAbstractItemModel>
#include <QtCore/QDateTime>
QT_CHARTS_BEGIN_NAMESPACE
/*!
Constructs a mapper object which is a child of \a parent.
*/
QXYModelMapper::QXYModelMapper(QObject *parent)
: QObject(parent),
d_ptr(new QXYModelMapperPrivate(this))
{
}
/*!
\internal
*/
QAbstractItemModel *QXYModelMapper::model() const
{
Q_D(const QXYModelMapper);
return d->m_model;
}
/*!
\internal
*/
void QXYModelMapper::setModel(QAbstractItemModel *model)
{
if (model == 0)
return;
Q_D(QXYModelMapper);
if (d->m_model)
disconnect(d->m_model, 0, d, 0);
d->m_model = model;
d->initializeXYFromModel();
// connect signals from the model
connect(d->m_model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), d, SLOT(modelUpdated(QModelIndex,QModelIndex)));
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(modelReset()), d, SLOT(initializeXYFromModel()));
connect(d->m_model, SIGNAL(destroyed()), d, SLOT(handleModelDestroyed()));
}
/*!
\internal
*/
QXYSeries *QXYModelMapper::series() const
{
Q_D(const QXYModelMapper);
return d->m_series;
}
/*!
\internal
*/
void QXYModelMapper::setSeries(QXYSeries *series)
{
Q_D(QXYModelMapper);
if (d->m_series)
disconnect(d->m_series, 0, d, 0);
if (series == 0)
return;
d->m_series = series;
d->initializeXYFromModel();
// connect the signals from the series
connect(d->m_series, SIGNAL(pointAdded(int)), d, SLOT(handlePointAdded(int)));
connect(d->m_series, SIGNAL(pointRemoved(int)), d, SLOT(handlePointRemoved(int)));
connect(d->m_series, SIGNAL(pointReplaced(int)), d, SLOT(handlePointReplaced(int)));
connect(d->m_series, SIGNAL(destroyed()), d, SLOT(handleSeriesDestroyed()));
connect(d->m_series, SIGNAL(pointsRemoved(int,int)), d, SLOT(handlePointsRemoved(int,int)));
}
/*!
\internal
*/
int QXYModelMapper::first() const
{
Q_D(const QXYModelMapper);
return d->m_first;
}
/*!
\internal
*/
void QXYModelMapper::setFirst(int first)
{
Q_D(QXYModelMapper);
d->m_first = qMax(first, 0);
d->initializeXYFromModel();
}
/*!
\internal
*/
int QXYModelMapper::count() const
{
Q_D(const QXYModelMapper);
return d->m_count;
}
/*!
\internal
*/
void QXYModelMapper::setCount(int count)
{
Q_D(QXYModelMapper);
d->m_count = qMax(count, -1);
d->initializeXYFromModel();
}
/*!
Returns the orientation that is used when QXYModelMapper accesses the model.
This mean whether the consecutive x/y values of the QXYSeries are read from rows (Qt::Horizontal)
or from columns (Qt::Vertical)
*/
Qt::Orientation QXYModelMapper::orientation() const
{
Q_D(const QXYModelMapper);
return d->m_orientation;
}
/*!
Returns the \a orientation that is used when QXYModelMapper accesses the model.
This mean whether the consecutive x/y values of the QXYSeries are read from rows (Qt::Horizontal)
or from columns (Qt::Vertical)
*/
void QXYModelMapper::setOrientation(Qt::Orientation orientation)
{
Q_D(QXYModelMapper);
d->m_orientation = orientation;
d->initializeXYFromModel();
}
/*!
Returns which section of the model is kept in sync with the x values of the QXYSeries
*/
int QXYModelMapper::xSection() const
{
Q_D(const QXYModelMapper);
return d->m_xSection;
}
/*!
Sets the model section that is kept in sync with the x values of the QXYSeries.
Parameter \a xSection specifies the section of the model.
*/
void QXYModelMapper::setXSection(int xSection)
{
Q_D(QXYModelMapper);
d->m_xSection = qMax(-1, xSection);
d->initializeXYFromModel();
}
/*!
Returns which section of the model is kept in sync with the y values of the QXYSeries
*/
int QXYModelMapper::ySection() const
{
Q_D(const QXYModelMapper);
return d->m_ySection;
}
/*!
Sets the model section that is kept in sync with the y values of the QXYSeries.
Parameter \a ySection specifies the section of the model.
*/
void QXYModelMapper::setYSection(int ySection)
{
Q_D(QXYModelMapper);
d->m_ySection = qMax(-1, ySection);
d->initializeXYFromModel();
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
QXYModelMapperPrivate::QXYModelMapperPrivate(QXYModelMapper *q) :
QObject(q),
m_series(0),
m_model(0),
m_first(0),
m_count(-1),
m_orientation(Qt::Vertical),
m_xSection(-1),
m_ySection(-1),
m_seriesSignalsBlock(false),
m_modelSignalsBlock(false),
q_ptr(q)
{
}
void QXYModelMapperPrivate::blockModelSignals(bool block)
{
m_modelSignalsBlock = block;
}
void QXYModelMapperPrivate::blockSeriesSignals(bool block)
{
m_seriesSignalsBlock = block;
}
QModelIndex QXYModelMapperPrivate::xModelIndex(int xPos)
{
if (m_count != -1 && xPos >= m_count)
return QModelIndex(); // invalid
if (m_orientation == Qt::Vertical)
return m_model->index(xPos + m_first, m_xSection);
else
return m_model->index(m_xSection, xPos + m_first);
}
QModelIndex QXYModelMapperPrivate::yModelIndex(int yPos)
{
if (m_count != -1 && yPos >= m_count)
return QModelIndex(); // invalid
if (m_orientation == Qt::Vertical)
return m_model->index(yPos + m_first, m_ySection);
else
return m_model->index(m_ySection, yPos + m_first);
}
qreal QXYModelMapperPrivate::valueFromModel(QModelIndex index)
{
QVariant value = m_model->data(index, Qt::DisplayRole);
switch (value.type()) {
case QVariant::DateTime:
return value.toDateTime().toMSecsSinceEpoch();
case QVariant::Date:
return QDateTime(value.toDate()).toMSecsSinceEpoch();
default:
return value.toReal();
}
}
void QXYModelMapperPrivate::setValueToModel(QModelIndex index, qreal value)
{
QVariant oldValue = m_model->data(index, Qt::DisplayRole);
switch (oldValue.type()) {
case QVariant::DateTime:
m_model->setData(index, QDateTime::fromMSecsSinceEpoch(value));
break;
case QVariant::Date:
m_model->setData(index, QDateTime::fromMSecsSinceEpoch(value).date());
break;
default:
m_model->setData(index, value);
}
}
void QXYModelMapperPrivate::handlePointAdded(int pointPos)
{
if (m_seriesSignalsBlock)
return;
if (m_count != -1)
m_count += 1;
blockModelSignals();
if (m_orientation == Qt::Vertical)
m_model->insertRows(pointPos + m_first, 1);
else
m_model->insertColumns(pointPos + m_first, 1);
setValueToModel(xModelIndex(pointPos), m_series->points().at(pointPos).x());
setValueToModel(yModelIndex(pointPos), m_series->points().at(pointPos).y());
blockModelSignals(false);
}
void QXYModelMapperPrivate::handlePointRemoved(int pointPos)
{
if (m_seriesSignalsBlock)
return;
if (m_count != -1)
m_count -= 1;
blockModelSignals();
if (m_orientation == Qt::Vertical)
m_model->removeRow(pointPos + m_first);
else
m_model->removeColumn(pointPos + m_first);
blockModelSignals(false);
}
void QXYModelMapperPrivate::handlePointsRemoved(int pointPos, int count)
{
if (m_seriesSignalsBlock)
return;
m_count -= count;
if (m_count < -1)
m_count = -1;
blockModelSignals();
if (m_orientation == Qt::Vertical)
m_model->removeRows(pointPos + m_first, count);
else
m_model->removeColumns(pointPos + m_first, count);
blockModelSignals(false);
}
void QXYModelMapperPrivate::handlePointReplaced(int pointPos)
{
if (m_seriesSignalsBlock)
return;
blockModelSignals();
setValueToModel(xModelIndex(pointPos), m_series->points().at(pointPos).x());
setValueToModel(yModelIndex(pointPos), m_series->points().at(pointPos).y());
blockModelSignals(false);
}
void QXYModelMapperPrivate::handleSeriesDestroyed()
{
m_series = 0;
}
void QXYModelMapperPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
{
if (m_model == 0 || m_series == 0)
return;
if (m_modelSignalsBlock)
return;
blockSeriesSignals();
QModelIndex index;
QPointF oldPoint;
QPointF newPoint;
for (int row = topLeft.row(); row <= bottomRight.row(); row++) {
for (int column = topLeft.column(); column <= bottomRight.column(); column++) {
index = topLeft.sibling(row, column);
if (m_orientation == Qt::Vertical && (index.column() == m_xSection || index.column() == m_ySection)) {
if (index.row() >= m_first && (m_count == - 1 || index.row() < m_first + m_count)) {
QModelIndex xIndex = xModelIndex(index.row() - m_first);
QModelIndex yIndex = yModelIndex(index.row() - m_first);
if (xIndex.isValid() && yIndex.isValid()) {
oldPoint = m_series->points().at(index.row() - m_first);
newPoint.setX(valueFromModel(xIndex));
newPoint.setY(valueFromModel(yIndex));
}
}
} else if (m_orientation == Qt::Horizontal && (index.row() == m_xSection || index.row() == m_ySection)) {
if (index.column() >= m_first && (m_count == - 1 || index.column() < m_first + m_count)) {
QModelIndex xIndex = xModelIndex(index.column() - m_first);
QModelIndex yIndex = yModelIndex(index.column() - m_first);
if (xIndex.isValid() && yIndex.isValid()) {
oldPoint = m_series->points().at(index.column() - m_first);
newPoint.setX(valueFromModel(xIndex));
newPoint.setY(valueFromModel(yIndex));
}
}
} else {
continue;
}
m_series->replace(oldPoint, newPoint);
}
}
blockSeriesSignals(false);
}
void QXYModelMapperPrivate::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_xSection || start <= m_ySection) // if the changes affect the map - reinitialize the xy
initializeXYFromModel();
blockSeriesSignals(false);
}
void QXYModelMapperPrivate::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_xSection || start <= m_ySection) // if the changes affect the map - reinitialize the xy
initializeXYFromModel();
blockSeriesSignals(false);
}
void QXYModelMapperPrivate::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_xSection || start <= m_ySection) // if the changes affect the map - reinitialize the xy
initializeXYFromModel();
blockSeriesSignals(false);
}
void QXYModelMapperPrivate::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_xSection || start <= m_ySection) // if the changes affect the map - reinitialize the xy
initializeXYFromModel();
blockSeriesSignals(false);
}
void QXYModelMapperPrivate::handleModelDestroyed()
{
m_model = 0;
}
void QXYModelMapperPrivate::insertData(int start, int end)
{
if (m_model == 0 || m_series == 0)
return;
if (m_count != -1 && start >= m_first + m_count) {
return;
} else {
int addedCount = end - start + 1;
if (m_count != -1 && addedCount > m_count)
addedCount = m_count;
int first = qMax(start, m_first);
int last = qMin(first + addedCount - 1, m_orientation == Qt::Vertical ? m_model->rowCount() - 1 : m_model->columnCount() - 1);
for (int i = first; i <= last; i++) {
QPointF point;
QModelIndex xIndex = xModelIndex(i - m_first);
QModelIndex yIndex = yModelIndex(i - m_first);
if (xIndex.isValid() && yIndex.isValid()) {
point.setX(valueFromModel(xIndex));
point.setY(valueFromModel(yIndex));
m_series->insert(i - m_first, point);
}
}
// remove excess of points (above m_count)
if (m_count != -1 && m_series->points().size() > m_count)
for (int i = m_series->points().size() - 1; i >= m_count; i--) {
m_series->remove(m_series->points().at(i));
}
}
}
void QXYModelMapperPrivate::removeData(int start, int end)
{
if (m_model == 0 || m_series == 0)
return;
int removedCount = end - start + 1;
if (m_count != -1 && start >= m_first + m_count) {
return;
} else {
int toRemove = qMin(m_series->count(), removedCount); // first find how many items can actually be removed
int first = qMax(start, m_first); // get the index of the first item that will be removed.
int last = qMin(first + toRemove - 1, m_series->count() + m_first - 1); // get the index of the last item that will be removed.
for (int i = last; i >= first; i--) {
m_series->remove(m_series->points().at(i - m_first));
}
if (m_count != -1) {
int itemsAvailable; // check how many are available to be added
if (m_orientation == Qt::Vertical)
itemsAvailable = m_model->rowCount() - m_first - m_series->count();
else
itemsAvailable = m_model->columnCount() - m_first - m_series->count();
int toBeAdded = qMin(itemsAvailable, m_count - m_series->count()); // add not more items than there is space left to be filled.
int currentSize = m_series->count();
if (toBeAdded > 0)
for (int i = m_series->count(); i < currentSize + toBeAdded; i++) {
QPointF point;
QModelIndex xIndex = xModelIndex(i);
QModelIndex yIndex = yModelIndex(i);
if (xIndex.isValid() && yIndex.isValid()) {
point.setX(valueFromModel(xIndex));
point.setY(valueFromModel(yIndex));
m_series->insert(i, point);
}
}
}
}
}
void QXYModelMapperPrivate::initializeXYFromModel()
{
if (m_model == 0 || m_series == 0)
return;
blockSeriesSignals();
// clear current content
m_series->clear();
// create the initial points set
int pointPos = 0;
QModelIndex xIndex = xModelIndex(pointPos);
QModelIndex yIndex = yModelIndex(pointPos);
while (xIndex.isValid() && yIndex.isValid()) {
QPointF point;
point.setX(valueFromModel(xIndex));
point.setY(valueFromModel(yIndex));
m_series->append(point);
pointPos++;
xIndex = xModelIndex(pointPos);
yIndex = yModelIndex(pointPos);
}
blockSeriesSignals(false);
}
#include "moc_qxymodelmapper.cpp"
#include "moc_qxymodelmapper_p.cpp"
QT_CHARTS_END_NAMESPACE