qbarmodelmapper.cpp
428 lines
| 12.9 KiB
| text/x-c
|
CppLexer
Marek Rosa
|
r1355 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2012 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 | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
|
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r1170 | #include "qbarmodelmapper.h" | ||
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r1293 | #include "qbarmodelmapper_p.h" | ||
| #include "qbarseries.h" | ||||
| #include "qbarset.h" | ||||
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r1331 | #include "qchart.h" | ||
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r1293 | #include <QAbstractItemModel> | ||
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r1170 | |||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
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r1378 | /*! | ||
| \class QBarModelMapper | ||||
| \brief part of QtCommercial chart API. | ||||
| \mainclass | ||||
| The instance of this class cannot be created directly. QHBarModelMapper of QVBarModelMapper should be used instead. This class is used to create a connection between QBarSeries and QAbstractItemModel derived model object. | ||||
| Curently it is NOT possible to use both QAbstractItemModel and QBarSeries model API. | ||||
| When the series is set to the mapper the QBarSeries and QBarSet API that affect the data (append, setValue, remove) should not be used. | ||||
| The model and the QBarSeries won't be kept in sync. Model API should be used to insert,remove,modify BarSets. | ||||
| NOTE: used model has to support adding/removing rows/columns and modifying the data of the cells. | ||||
| */ | ||||
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r1348 | /*! | ||
| \property QBarModelMapper::series | ||||
| \brief Defines the QPieSeries object that is used by the mapper. | ||||
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r1378 | All the data in the series is discarded when it is set to the mapper. | ||
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r1348 | When new series is specified the old series is disconnected (it preserves its data) | ||
| */ | ||||
| /*! | ||||
| \property QBarModelMapper::model | ||||
| \brief Defines the model that is used by the mapper. | ||||
| */ | ||||
| /*! | ||||
| \property QBarModelMapper::first | ||||
| \brief Defines which item of the model's row/column should be mapped as the value of the first QBarSet in the series. | ||||
| Minimal and default value is: 0 | ||||
| */ | ||||
| /*! | ||||
| \property QBarModelMapper::count | ||||
| \brief Defines the number of rows/columns of the model that are mapped as the data for QBarSeries | ||||
| Minimal and default value is: -1 (count limited by the number of rows/columns in the model) | ||||
| */ | ||||
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r1347 | /*! | ||
| Constructs a mapper object which is a child of \a parent. | ||||
| */ | ||||
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r1170 | QBarModelMapper::QBarModelMapper(QObject *parent) : | ||
| QObject(parent), | ||||
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r1293 | 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(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))); | ||||
| } | ||||
| QBarSeries* QBarModelMapper::series() const | ||||
| { | ||||
| Q_D(const QBarModelMapper); | ||||
| return d->m_series; | ||||
| } | ||||
| void QBarModelMapper::setSeries(QBarSeries *series) | ||||
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r1170 | { | ||
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r1293 | 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 | ||||
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r1379 | // TODO: TO be implemented | ||
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r1170 | } | ||
| int QBarModelMapper::first() const | ||||
| { | ||||
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r1293 | Q_D(const QBarModelMapper); | ||
| return d->m_first; | ||||
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r1170 | } | ||
| void QBarModelMapper::setFirst(int first) | ||||
| { | ||||
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r1293 | Q_D(QBarModelMapper); | ||
| d->m_first = qMax(first, 0); | ||||
| d->initializeBarFromModel(); | ||||
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r1170 | } | ||
| int QBarModelMapper::count() const | ||||
| { | ||||
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r1293 | Q_D(const QBarModelMapper); | ||
| return d->m_count; | ||||
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r1170 | } | ||
| void QBarModelMapper::setCount(int count) | ||||
| { | ||||
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r1293 | Q_D(QBarModelMapper); | ||
| d->m_count = qMax(count, -1); | ||||
| d->initializeBarFromModel(); | ||||
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r1170 | } | ||
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r1348 | /*! | ||
| 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) | ||||
| */ | ||||
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r1170 | Qt::Orientation QBarModelMapper::orientation() const | ||
| { | ||||
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r1293 | Q_D(const QBarModelMapper); | ||
| return d->m_orientation; | ||||
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r1170 | } | ||
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r1348 | /*! | ||
| 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) | ||||
| */ | ||||
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r1170 | void QBarModelMapper::setOrientation(Qt::Orientation orientation) | ||
| { | ||||
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r1293 | Q_D(QBarModelMapper); | ||
| d->m_orientation = orientation; | ||||
| d->initializeBarFromModel(); | ||||
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r1170 | } | ||
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r1348 | /*! | ||
| Returns which section of the model is used as the data source for the first bar set | ||||
| */ | ||||
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r1312 | int QBarModelMapper::firstBarSetSection() const | ||
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r1170 | { | ||
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r1293 | Q_D(const QBarModelMapper); | ||
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r1312 | return d->m_firstBarSetSection; | ||
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r1170 | } | ||
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r1348 | /*! | ||
| 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. | ||||
| */ | ||||
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r1312 | void QBarModelMapper::setFirstBarSetSection(int firstBarSetSection) | ||
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r1170 | { | ||
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r1293 | Q_D(QBarModelMapper); | ||
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r1364 | d->m_firstBarSetSection = qMax(-1, firstBarSetSection); | ||
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r1293 | d->initializeBarFromModel(); | ||
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r1170 | } | ||
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r1348 | /*! | ||
| Returns which section of the model is used as the data source for the last bar set | ||||
| */ | ||||
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r1312 | int QBarModelMapper::lastBarSetSection() const | ||
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r1170 | { | ||
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r1293 | Q_D(const QBarModelMapper); | ||
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r1312 | return d->m_lastBarSetSection; | ||
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r1170 | } | ||
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r1348 | /*! | ||
| 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. | ||||
| */ | ||||
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r1312 | void QBarModelMapper::setLastBarSetSection(int lastBarSetSection) | ||
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r1170 | { | ||
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r1293 | Q_D(QBarModelMapper); | ||
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r1364 | d->m_lastBarSetSection = qMax(-1, lastBarSetSection); | ||
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r1293 | d->initializeBarFromModel(); | ||
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r1170 | } | ||
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r1348 | /*! | ||
| Resets the QBarModelMapper to the default state. | ||||
| first: 0; count: -1; firstBarSetSection: -1; lastBarSetSection: -1; categoriesSection: -1 | ||||
| */ | ||||
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r1170 | void QBarModelMapper::reset() | ||
| { | ||||
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r1293 | Q_D(QBarModelMapper); | ||
| d->m_first = 0; | ||||
| d->m_count = -1; | ||||
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r1312 | d->m_firstBarSetSection = -1; | ||
| d->m_lastBarSetSection = -1; | ||||
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r1293 | d->initializeBarFromModel(); | ||
| } | ||||
| /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||||
| QBarModelMapperPrivate::QBarModelMapperPrivate(QBarModelMapper *q) : | ||||
| m_series(0), | ||||
| m_model(0), | ||||
| m_first(0), | ||||
| m_count(-1), | ||||
| m_orientation(Qt::Vertical), | ||||
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r1312 | m_firstBarSetSection(-1), | ||
| m_lastBarSetSection(-1), | ||||
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r1293 | 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; | ||||
| } | ||||
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r1295 | QBarSet* QBarModelMapperPrivate::barSet(QModelIndex index) | ||
| { | ||||
| if (!index.isValid()) | ||||
| return 0; | ||||
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r1312 | if (m_orientation == Qt::Vertical && index.column() >= m_firstBarSetSection && index.column() <= m_lastBarSetSection) { | ||
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r1331 | if (index.row() >= m_first && (m_count == - 1 || index.row() < m_first + m_count)) { | ||
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r1356 | // if (m_model->index(index.row(), m_valuesSection).isValid() && m_model->index(index.row(), m_labelsSection).isValid()) | ||
| return m_series->barSets().at(index.column() - m_firstBarSetSection); | ||||
| // else | ||||
| // return 0; | ||||
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r1331 | } | ||
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r1312 | } else if (m_orientation == Qt::Horizontal && index.row() >= m_firstBarSetSection && index.row() <= m_lastBarSetSection) { | ||
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r1295 | if (index.column() >= m_first && (m_count == - 1 || index.column() < m_first + m_count)) | ||
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r1312 | return m_series->barSets().at(index.row() - m_firstBarSetSection); | ||
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r1295 | } | ||
| return 0; // This part of model has not been mapped to any slice | ||||
| } | ||||
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r1293 | QModelIndex QBarModelMapperPrivate::barModelIndex(int barSection, int posInBar) | ||
| { | ||||
| if (m_count != -1 && posInBar >= m_count) | ||||
| return QModelIndex(); // invalid | ||||
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r1312 | if (barSection < m_firstBarSetSection || barSection > m_lastBarSetSection) | ||
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r1293 | 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::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight) | ||||
| { | ||||
| Q_UNUSED(topLeft) | ||||
| Q_UNUSED(bottomRight) | ||||
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r1294 | |||
| if (m_model == 0 || m_series == 0) | ||||
| return; | ||||
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r1293 | if (m_modelSignalsBlock) | ||
| return; | ||||
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r1295 | 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); | ||||
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r1293 | } | ||
| void QBarModelMapperPrivate::modelRowsAdded(QModelIndex parent, int start, int end) | ||||
| { | ||||
| Q_UNUSED(parent); | ||||
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r1295 | Q_UNUSED(end) | ||
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r1293 | if (m_modelSignalsBlock) | ||
| return; | ||||
| blockSeriesSignals(); | ||||
| if (m_orientation == Qt::Vertical) | ||||
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r1295 | // insertData(start, end); | ||
| initializeBarFromModel(); | ||||
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r1354 | else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize | ||
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r1293 | initializeBarFromModel(); | ||
| blockSeriesSignals(false); | ||||
| } | ||||
| void QBarModelMapperPrivate::modelRowsRemoved(QModelIndex parent, int start, int end) | ||||
| { | ||||
| Q_UNUSED(parent); | ||||
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r1295 | Q_UNUSED(end) | ||
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r1293 | if (m_modelSignalsBlock) | ||
| return; | ||||
| blockSeriesSignals(); | ||||
| if (m_orientation == Qt::Vertical) | ||||
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r1295 | // removeData(start, end); | ||
| initializeBarFromModel(); | ||||
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r1354 | else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize | ||
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r1293 | initializeBarFromModel(); | ||
| blockSeriesSignals(false); | ||||
| } | ||||
| void QBarModelMapperPrivate::modelColumnsAdded(QModelIndex parent, int start, int end) | ||||
| { | ||||
| Q_UNUSED(parent); | ||||
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r1295 | Q_UNUSED(end) | ||
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r1293 | if (m_modelSignalsBlock) | ||
| return; | ||||
| blockSeriesSignals(); | ||||
| if (m_orientation == Qt::Horizontal) | ||||
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r1295 | // insertData(start, end); | ||
| initializeBarFromModel(); | ||||
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r1354 | else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize | ||
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r1293 | initializeBarFromModel(); | ||
| blockSeriesSignals(false); | ||||
| } | ||||
| void QBarModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, int end) | ||||
| { | ||||
| Q_UNUSED(parent); | ||||
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r1295 | Q_UNUSED(end) | ||
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r1293 | if (m_modelSignalsBlock) | ||
| return; | ||||
| blockSeriesSignals(); | ||||
| if (m_orientation == Qt::Horizontal) | ||||
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r1295 | // removeData(start, end); | ||
| initializeBarFromModel(); | ||||
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r1354 | else if (start <= m_firstBarSetSection || start <= m_lastBarSetSection) // if the changes affect the map - reinitialize | ||
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r1293 | initializeBarFromModel(); | ||
| blockSeriesSignals(false); | ||||
| } | ||||
| void QBarModelMapperPrivate::insertData(int start, int end) | ||||
| { | ||||
| Q_UNUSED(end) | ||||
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r1379 | Q_UNUSED(start) | ||
| Q_UNUSED(end) | ||||
| // To be implemented | ||||
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r1293 | } | ||
| void QBarModelMapperPrivate::removeData(int start, int end) | ||||
| { | ||||
| Q_UNUSED(end) | ||||
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r1379 | Q_UNUSED(start) | ||
| Q_UNUSED(end) | ||||
| // To be implemented | ||||
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r1293 | } | ||
| void QBarModelMapperPrivate::initializeBarFromModel() | ||||
| { | ||||
| if (m_model == 0 || m_series == 0) | ||||
| return; | ||||
| blockSeriesSignals(); | ||||
| // clear current content | ||||
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r1295 | m_series->clear(); | ||
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r1293 | |||
| // create the initial bar sets | ||||
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r1312 | for (int i = m_firstBarSetSection; i <= m_lastBarSetSection; i++) { | ||
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r1293 | int posInBar = 0; | ||
| QModelIndex barIndex = barModelIndex(i, posInBar); | ||||
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r1356 | // check if there is such model index | ||
| if (barIndex.isValid()) { | ||||
| QBarSet *barSet = new QBarSet(m_model->headerData(i, Qt::Horizontal).toString()); | ||||
| while (barIndex.isValid()) { | ||||
| barSet->append(m_model->data(barIndex, Qt::DisplayRole).toDouble()); | ||||
| posInBar++; | ||||
| barIndex = barModelIndex(i, posInBar); | ||||
| } | ||||
| m_series->append(barSet); | ||||
| } else { | ||||
| break; | ||||
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r1293 | } | ||
| } | ||||
| blockSeriesSignals(false); | ||||
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r1170 | } | ||
| #include "moc_qbarmodelmapper.cpp" | ||||
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r1293 | #include "moc_qbarmodelmapper_p.cpp" | ||
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r1170 | |||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||