##// END OF EJS Templates
ModelMapper proposal
ModelMapper proposal

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r1229:d938c059b23b
r1229:d938c059b23b
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qpiemodelmapper.cpp
319 lines | 11.5 KiB | text/x-c | CppLexer
#include "qpiemodelmapper_p.h"
#include "qpiemodelmapper.h"
#include "qpieseries.h"
#include "qpieslice.h"
#include <QAbstractItemModel>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
QPieModelMapper::QPieModelMapper(QObject *parent) :
QObject(parent),
d_ptr(new QPieModelMapperPrivate(this))
{
}
int QPieModelMapper::first() const
{
Q_D(const QPieModelMapper);
return d->m_first;
}
void QPieModelMapper::setFirst(int first)
{
Q_D(QPieModelMapper);
d->m_first = qMax(first, 0);
// emit updated();
}
int QPieModelMapper::count() const
{
Q_D(const QPieModelMapper);
return d->m_count;
}
void QPieModelMapper::setCount(int count)
{
Q_D(QPieModelMapper);
d->m_count = qMax(count, -1);
// emit updated();
}
Qt::Orientation QPieModelMapper::orientation() const
{
Q_D(const QPieModelMapper);
return d->m_orientation;
}
void QPieModelMapper::setOrientation(Qt::Orientation orientation)
{
Q_D(QPieModelMapper);
d->m_orientation = orientation;
// emit updated();
}
int QPieModelMapper::mapValues() const
{
Q_D(const QPieModelMapper);
return d->m_mapValues;
}
void QPieModelMapper::setMapValues(int mapValues)
{
Q_D(QPieModelMapper);
d->m_mapValues = mapValues;
// emit updated();
}
int QPieModelMapper::mapLabels() const
{
Q_D(const QPieModelMapper);
return d->m_mapLabels;
}
void QPieModelMapper::setMapLabels(int mapLabels)
{
Q_D(QPieModelMapper);
d->m_mapLabels = mapLabels;
// emit updated();
}
void QPieModelMapper::reset()
{
Q_D(QPieModelMapper);
d->m_first = 0;
d->m_count = -1;
d->m_orientation = Qt::Vertical;
d->m_mapValues = -1;
d->m_mapLabels = -1;
// emit updated();
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
QPieModelMapperPrivate::QPieModelMapperPrivate(QPieModelMapper *q) :
q_ptr(q)
{
m_first = 0;
m_count = -1;
m_orientation = Qt::Vertical;
m_mapValues = -1;
m_mapLabels = -1;
}
int QPieModelMapperPrivate::getSliceIndex()
{
// invalid
return -1;
}
void QPieModelMapperPrivate::setModel(QAbstractItemModel *model)
{
if (model == 0)
return;
if(m_model)
{
// disconnect signals from old model
disconnect(m_model, 0, this, 0);
}
m_model = model;
// connect signals from the model
connect(m_model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), this, SLOT(modelUpdated(QModelIndex,QModelIndex)));
connect(m_model, SIGNAL(rowsInserted(QModelIndex,int,int)), this, SLOT(modelRowsAdded(QModelIndex,int,int)));
connect(m_model, SIGNAL(rowsRemoved(QModelIndex,int,int)), this, SLOT(modelRowsRemoved(QModelIndex,int,int)));
connect(m_model, SIGNAL(columnsInserted(QModelIndex,int,int)), this, SLOT(modelColumnsAdded(QModelIndex,int,int)));
connect(m_model, SIGNAL(columnsRemoved(QModelIndex,int,int)), this, SLOT(modelColumnsRemoved(QModelIndex,int,int)));
}
void QPieModelMapperPrivate::slicesAdded()
{
//
}
void QPieModelMapperPrivate::slicesRemoved()
{
//
}
void QPieModelMapperPrivate::sliceChanged()
{
//
}
void QPieModelMapperPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
{
for (int row = topLeft.row(); row <= bottomRight.row(); row++) {
for (int column = topLeft.column(); column <= bottomRight.column(); column++) {
if (m_orientation == Qt::Vertical)
{
if ( topLeft.row() >= m_first && (m_count == - 1 || topLeft.row() < m_first + m_count)) {
if (topLeft.column() == m_mapValues)
m_series->slices().at(topLeft.row() - m_first)->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
if (topLeft.column() == m_mapLabels)
m_series->slices().at(topLeft.row() - m_first)->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
}
}
else
{
if (topLeft.column() >= m_first && (m_count == - 1 || topLeft.column() < m_first + m_count)) {
if (topLeft.row() == m_mapValues)
m_series->slices().at(topLeft.column() - m_first)->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
if (topLeft.row() == m_mapLabels)
m_series->slices().at(topLeft.column() - m_first)->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
}
}
}
}
}
//void QPieModelMapperPrivate::modelRowsAdded(QModelIndex parent, int start, int end)
//{
// Q_UNUSED(parent);
// if (m_mapper->orientation() == Qt::Vertical)
// insertData(start, end);
// else if (start <= m_mapValues || start <= m_mapLabels) // if the changes affect the map - reinitialize the pie
// initializePieFromModel();
//}
//void QPieModelMapperPrivate::modelRowsRemoved(QModelIndex parent, int start, int end)
//{
// Q_UNUSED(parent);
// if (m_mapper->orientation() == Qt::Vertical)
// removeData(start, end);
// else if (start <= m_mapValues || start <= m_mapLabels) // if the changes affect the map - reinitialize the pie
// initializePieFromModel();
//}
//void QPieModelMapperPrivate::modelColumnsAdded(QModelIndex parent, int start, int end)
//{
// Q_UNUSED(parent);
// if (m_mapper->orientation() == Qt::Horizontal)
// insertData(start, end);
// else if (start <= m_mapValues || start <= m_mapLabels) // if the changes affect the map - reinitialize the pie
// initializePieFromModel();
//}
//void QPieModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, int end)
//{
// Q_UNUSED(parent);
// if (m_mapper->orientation() == Qt::Horizontal)
// removeData(start, end);
// else if (start <= m_mapValues || start <= m_mapLabels) // if the changes affect the map - reinitialize the pie
// initializePieFromModel();
//}
//void QPieModelMapperPrivate::insertData(int start, int end)
//{
// Q_Q(QPieSeries);
// 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_mapper->orientation() == Qt::Vertical ? m_model->rowCount() - 1 : m_model->columnCount() - 1);
// for (int i = first; i <= last; i++) {
// QPieSlice *slice = new QPieSlice;
// if (m_mapper->orientation() == Qt::Vertical) {
// slice->setValue(m_model->data(m_model->index(i, m_mapValues), Qt::DisplayRole).toDouble());
// slice->setLabel(m_model->data(m_model->index(i, m_mapLabels), Qt::DisplayRole).toString());
// } else {
// slice->setValue(m_model->data(m_model->index(m_mapValues, i), Qt::DisplayRole).toDouble());
// slice->setLabel(m_model->data(m_model->index(m_mapLabels, i), Qt::DisplayRole).toString());
// }
// slice->setLabelVisible();
// q->insert(i - m_first, slice);
// }
// if (m_count != -1 && m_series->slices().size() > m_count)
// for (int i = m_series->slices().size() - 1; i >= m_count; i--)
// q->remove(q->slices().at(i));
// }
//}
//void QPieModelMapperPrivate::removeData(int start, int end)
//{
// Q_Q(QPieSeries);
// int removedCount = end - start + 1;
// if (m_count != -1 && start >= m_first + m_count) {
// return;
// } else {
// int toRemove = qMin(m_series->slices().size(), 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->slices().size() + m_first - 1); // get the index of the last item that will be removed.
// for (int i = last; i >= first; i--)
// q->remove(q->slices().at(i - m_first));
// if (m_count != -1) {
// int itemsAvailable; // check how many are available to be added
// if (m_mapper->orientation() == Qt::Vertical)
// itemsAvailable = m_model->rowCount() - m_first - m_series->slices().size();
// else
// itemsAvailable = m_model->columnCount() - m_first - m_series->slices().size();
// int toBeAdded = qMin(itemsAvailable, m_count - m_series->slices().size()); // add not more items than there is space left to be filled.
// int currentSize = m_series->slices().size();
// if (toBeAdded > 0)
// for (int i = m_series->slices().size(); i < currentSize + toBeAdded; i++) {
// QPieSlice *slice = new QPieSlice;
// if (m_mapper->orientation() == Qt::Vertical) {
// slice->setValue(m_model->data(m_model->index(i + m_first, m_mapValues), Qt::DisplayRole).toDouble());
// slice->setLabel(m_model->data(m_model->index(i + m_first, m_mapLabels), Qt::DisplayRole).toString());
// } else {
// slice->setValue(m_model->data(m_model->index(m_mapValues, i + m_first), Qt::DisplayRole).toDouble());
// slice->setLabel(m_model->data(m_model->index(m_mapLabels, i + m_first), Qt::DisplayRole).toString());
// }
// slice->setLabelVisible();
// q->insert(i, slice);
// }
// }
// }
//}
//void QPieModelMapperPrivate::initializePieFromModel()
//{
// Q_Q(QPieSeries);
// // clear current content
// q->clear();
// if (m_model == 0 || m_mapper == 0)
// return;
// // check if mappings are set
// if (m_mapValues == -1 || m_mapLabels == -1)
// return;
// // create the initial slices set
// if (m_mapper->orientation() == Qt::Vertical) {
// if (m_mapValues >= m_model->columnCount() || m_mapLabels >= m_model->columnCount())
// return; // mapped columns are not existing
// int sliceCount = 0;
// if(m_count == -1)
// sliceCount = m_model->rowCount() - m_first;
// else
// sliceCount = qMin(m_count, m_model->rowCount() - m_first);
// for (int i = m_first; i < m_first + sliceCount; i++)
// q->append(m_model->data(m_model->index(i, m_mapValues), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(i, m_mapLabels), Qt::DisplayRole).toString());
// } else {
// if (m_mapValues >= m_model->rowCount() || m_mapLabels >= m_model->rowCount())
// return; // mapped columns are not existing
// int sliceCount = 0;
// if(m_count == -1)
// sliceCount = m_model->columnCount() - m_first;
// else
// sliceCount = qMin(m_count, m_model->columnCount() - m_first);
// for (int i = m_first; i < m_first + sliceCount; i++)
// q->append(m_model->data(m_model->index(m_mapValues, i), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(m_mapLabels, i), Qt::DisplayRole).toString());
// }
// q->setLabelsVisible(true);
//}
#include "moc_qpiemodelmapper_p.cpp"
#include "moc_qpiemodelmapper.cpp"
QTCOMMERCIALCHART_END_NAMESPACE