##// END OF EJS Templates
Fix vanishing labels for first and last ticks....
Fix vanishing labels for first and last ticks. Extra space must be reserved by layout for the axes that have wide labels for first or last tick. Changed the logic how axis sizeHint is interpreted to make the previously irrelevant height or width (depending on orientation) of the sizeHint to indicate how far the widest label extends past the first/last tick, and adjust the grid size accordingly in layout. Reviewed-by: Mika Salmela

File last commit:

r2432:53927f716a3d
r2443:5b27b7b1d72a RC2_1.2.1
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qbarmodelmapper.cpp
561 lines | 17.3 KiB | text/x-c | CppLexer
/****************************************************************************
**
** Copyright (C) 2013 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 Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial 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>
QTCOMMERCIALCHART_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"
QTCOMMERCIALCHART_END_NAMESPACE