qpiemodelmapper.cpp
596 lines
| 19.5 KiB
| text/x-c
|
CppLexer
Marek Rosa
|
r1309 | /**************************************************************************** | ||
| ** | ||||
| ** 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 | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
|
Marek Rosa
|
r1229 | #include "qpiemodelmapper_p.h" | ||
|
Marek Rosa
|
r1164 | #include "qpiemodelmapper.h" | ||
|
Marek Rosa
|
r1229 | #include "qpieseries.h" | ||
| #include "qpieslice.h" | ||||
| #include <QAbstractItemModel> | ||||
|
Marek Rosa
|
r1164 | |||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
|
Marek Rosa
|
r1340 | /*! | ||
| \property QPieModelMapper::series | ||||
| \brief Defines the QPieSeries object that is used by the mapper. | ||||
| All the data in the series in the series is discarded when it is set to the mapper. | ||||
| When new series is specified the old series is disconnected (it preserves its data) | ||||
| */ | ||||
| /*! | ||||
| \property QPieModelMapper::model | ||||
| \brief Defines the model that is used by the mapper. | ||||
| */ | ||||
| /*! | ||||
| \property QPieModelMapper::first | ||||
| \brief Defines which item of the model's row/column should be mapped as the value/label of the first slice of the pie | ||||
| Minimal and default value is: 0 | ||||
| */ | ||||
| /*! | ||||
| \property QPieModelMapper::count | ||||
| \brief Defines the number of rows/columns of the model that are mapped as the data for the pie. | ||||
| Minimal and default value is: -1 (count limited by the number of rows/columns in the model) | ||||
| */ | ||||
| /*! | ||||
| \class QPieModelMapper | ||||
| \brief part of QtCommercial chart API. | ||||
| \mainclass | ||||
| The instance of this class cannot be created directly. QHPieModelMapper of QVPieModelMapper should be used instead. This class is used to create a connection between QPieSeries and QAbstractItemModel derived model object. | ||||
| It is possible to use both QAbstractItemModel and QPieSeries model API. QPieModelMapper makes sure that Pie and the model are kept in sync. | ||||
| NOTE: used model has to support adding/removing rows/columns and modifying the data of the cells. | ||||
| */ | ||||
|
Marek Rosa
|
r1347 | /*! | ||
| Constructs a mapper object which is a child of \a parent. | ||||
| */ | ||||
|
Marek Rosa
|
r1164 | QPieModelMapper::QPieModelMapper(QObject *parent) : | ||
| QObject(parent), | ||||
|
Marek Rosa
|
r1229 | d_ptr(new QPieModelMapperPrivate(this)) | ||
|
Marek Rosa
|
r1164 | { | ||
| } | ||||
|
Marek Rosa
|
r1230 | QAbstractItemModel* QPieModelMapper::model() const | ||
| { | ||||
| Q_D(const QPieModelMapper); | ||||
| return d->m_model; | ||||
| } | ||||
| void QPieModelMapper::setModel(QAbstractItemModel *model) | ||||
| { | ||||
| if (model == 0) | ||||
| return; | ||||
| Q_D(QPieModelMapper); | ||||
| if (d->m_model) { | ||||
| disconnect(d->m_model, 0, d, 0); | ||||
| } | ||||
| d->m_model = model; | ||||
| d->initializePieFromModel(); | ||||
| // 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))); | ||||
| } | ||||
| QPieSeries* QPieModelMapper::series() const | ||||
| { | ||||
| Q_D(const QPieModelMapper); | ||||
| return d->m_series; | ||||
| } | ||||
| void QPieModelMapper::setSeries(QPieSeries *series) | ||||
| { | ||||
| Q_D(QPieModelMapper); | ||||
| if (d->m_series) { | ||||
| disconnect(d->m_series, 0, d, 0); | ||||
| } | ||||
|
Marek Rosa
|
r1252 | if (series == 0) | ||
| return; | ||||
|
Marek Rosa
|
r1230 | d->m_series = series; | ||
| d->initializePieFromModel(); | ||||
| // connect the signals from the series | ||||
|
Marek Rosa
|
r1231 | connect(d->m_series, SIGNAL(added(QList<QPieSlice*>)), d, SLOT(slicesAdded(QList<QPieSlice*>))); | ||
| connect(d->m_series, SIGNAL(removed(QList<QPieSlice*>)), d, SLOT(slicesRemoved(QList<QPieSlice*>))); | ||||
|
Marek Rosa
|
r1230 | } | ||
|
Marek Rosa
|
r1164 | int QPieModelMapper::first() const | ||
| { | ||||
|
Marek Rosa
|
r1229 | Q_D(const QPieModelMapper); | ||
| return d->m_first; | ||||
|
Marek Rosa
|
r1164 | } | ||
| void QPieModelMapper::setFirst(int first) | ||||
| { | ||||
|
Marek Rosa
|
r1229 | Q_D(QPieModelMapper); | ||
| d->m_first = qMax(first, 0); | ||||
|
Marek Rosa
|
r1230 | d->initializePieFromModel(); | ||
|
Marek Rosa
|
r1164 | } | ||
| int QPieModelMapper::count() const | ||||
| { | ||||
|
Marek Rosa
|
r1229 | Q_D(const QPieModelMapper); | ||
| return d->m_count; | ||||
|
Marek Rosa
|
r1164 | } | ||
| void QPieModelMapper::setCount(int count) | ||||
| { | ||||
|
Marek Rosa
|
r1229 | Q_D(QPieModelMapper); | ||
| d->m_count = qMax(count, -1); | ||||
|
Marek Rosa
|
r1230 | d->initializePieFromModel(); | ||
|
Marek Rosa
|
r1164 | } | ||
|
Marek Rosa
|
r1340 | /*! | ||
| Returns the orientation that is used when QPieModelMapper accesses the model. | ||||
| This mean whether the consecutive values/labels of the pie are read from row (Qt::Horizontal) | ||||
| or from columns (Qt::Vertical) | ||||
| */ | ||||
|
Marek Rosa
|
r1164 | Qt::Orientation QPieModelMapper::orientation() const | ||
| { | ||||
|
Marek Rosa
|
r1229 | Q_D(const QPieModelMapper); | ||
| return d->m_orientation; | ||||
|
Marek Rosa
|
r1164 | } | ||
|
Marek Rosa
|
r1340 | /*! | ||
| Returns the \a orientation that is used when QPieModelMapper accesses the model. | ||||
| This mean whether the consecutive values/labels of the pie are read from row (Qt::Horizontal) | ||||
| or from columns (Qt::Vertical) | ||||
| */ | ||||
|
Marek Rosa
|
r1164 | void QPieModelMapper::setOrientation(Qt::Orientation orientation) | ||
| { | ||||
|
Marek Rosa
|
r1229 | Q_D(QPieModelMapper); | ||
| d->m_orientation = orientation; | ||||
|
Marek Rosa
|
r1230 | d->initializePieFromModel(); | ||
|
Marek Rosa
|
r1164 | } | ||
|
Marek Rosa
|
r1340 | /*! | ||
| Returns which section of the model is kept in sync with the values of the pie's slices | ||||
| */ | ||||
|
Marek Rosa
|
r1320 | int QPieModelMapper::valuesSection() const | ||
|
Marek Rosa
|
r1164 | { | ||
|
Marek Rosa
|
r1229 | Q_D(const QPieModelMapper); | ||
|
Marek Rosa
|
r1320 | return d->m_valuesSection; | ||
|
Marek Rosa
|
r1164 | } | ||
|
Marek Rosa
|
r1340 | /*! | ||
| Sets the model section that is kept in sync with the pie slices values. | ||||
| Parameter \a valuesSection specifies the section of the model. | ||||
| */ | ||||
|
Marek Rosa
|
r1320 | void QPieModelMapper::setValuesSection(int valuesSection) | ||
|
Marek Rosa
|
r1164 | { | ||
|
Marek Rosa
|
r1229 | Q_D(QPieModelMapper); | ||
|
Marek Rosa
|
r1320 | d->m_valuesSection = qMax(-1, valuesSection); | ||
|
Marek Rosa
|
r1230 | d->initializePieFromModel(); | ||
|
Marek Rosa
|
r1164 | } | ||
|
Marek Rosa
|
r1340 | /*! | ||
| Returns which section of the model is kept in sync with the labels of the pie's slices | ||||
| */ | ||||
|
Marek Rosa
|
r1320 | int QPieModelMapper::labelsSection() const | ||
|
Marek Rosa
|
r1164 | { | ||
|
Marek Rosa
|
r1229 | Q_D(const QPieModelMapper); | ||
|
Marek Rosa
|
r1320 | return d->m_labelsSection; | ||
|
Marek Rosa
|
r1164 | } | ||
|
Marek Rosa
|
r1340 | /*! | ||
| Sets the model section that is kept in sync with the pie slices labels. | ||||
| Parameter \a labelsSection specifies the section of the model. | ||||
| */ | ||||
|
Marek Rosa
|
r1320 | void QPieModelMapper::setLabelsSection(int labelsSection) | ||
|
Marek Rosa
|
r1164 | { | ||
|
Marek Rosa
|
r1229 | Q_D(QPieModelMapper); | ||
|
Marek Rosa
|
r1320 | d->m_labelsSection = qMax(-1, labelsSection); | ||
|
Marek Rosa
|
r1230 | d->initializePieFromModel(); | ||
|
Marek Rosa
|
r1164 | } | ||
|
Marek Rosa
|
r1340 | /*! | ||
| Resets the QPieModelMapper to the default state. | ||||
| first: 0; count: -1; valuesSection: -1; labelsSection: -1; | ||||
| */ | ||||
|
Marek Rosa
|
r1164 | void QPieModelMapper::reset() | ||
|
Marek Rosa
|
r1229 | { | ||
| Q_D(QPieModelMapper); | ||||
| d->m_first = 0; | ||||
| d->m_count = -1; | ||||
|
Marek Rosa
|
r1320 | d->m_valuesSection = -1; | ||
| d->m_labelsSection = -1; | ||||
|
Marek Rosa
|
r1229 | } | ||
| /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||||
| QPieModelMapperPrivate::QPieModelMapperPrivate(QPieModelMapper *q) : | ||||
Tero Ahola
|
r1249 | m_series(0), | ||
| m_model(0), | ||||
| m_first(0), | ||||
| m_count(-1), | ||||
| m_orientation(Qt::Vertical), | ||||
|
Marek Rosa
|
r1320 | m_valuesSection(-1), | ||
| m_labelsSection(-1), | ||||
|
Tero Ahola
|
r1249 | m_seriesSignalsBlock(false), | ||
| m_modelSignalsBlock(false), | ||||
|
Marek Rosa
|
r1229 | q_ptr(q) | ||
|
Marek Rosa
|
r1164 | { | ||
|
Marek Rosa
|
r1231 | } | ||
| void QPieModelMapperPrivate::blockModelSignals(bool block) | ||||
| { | ||||
| m_modelSignalsBlock = block; | ||||
| } | ||||
| void QPieModelMapperPrivate::blockSeriesSignals(bool block) | ||||
| { | ||||
| m_seriesSignalsBlock = block; | ||||
|
Marek Rosa
|
r1164 | } | ||
|
Marek Rosa
|
r1229 | |||
|
Marek Rosa
|
r1230 | QPieSlice* QPieModelMapperPrivate::pieSlice(QModelIndex index) const | ||
| { | ||||
|
Marek Rosa
|
r1320 | if (!index.isValid()) | ||
| return 0; // index is invalid | ||||
| if (m_orientation == Qt::Vertical && (index.column() == m_valuesSection || index.column() == m_labelsSection)) { | ||||
| if (index.row() >= m_first && (m_count == - 1 || index.row() < m_first + m_count)) { | ||||
| if (m_model->index(index.row(), m_valuesSection).isValid() && m_model->index(index.row(), m_labelsSection).isValid()) | ||||
| return m_series->slices().at(index.row() - m_first); | ||||
| else | ||||
| return 0; | ||||
| } | ||||
| } else if (m_orientation == Qt::Horizontal && (index.row() == m_valuesSection || index.row() == m_labelsSection)) { | ||||
| if (index.column() >= m_first && (m_count == - 1 || index.column() < m_first + m_count)) { | ||||
| if (m_model->index(m_valuesSection, index.column()).isValid() && m_model->index(m_labelsSection, index.column()).isValid()) | ||||
| return m_series->slices().at(index.column() - m_first); | ||||
| else | ||||
| return 0; | ||||
| } | ||||
|
Marek Rosa
|
r1230 | } | ||
| return 0; // This part of model has not been mapped to any slice | ||||
|
Marek Rosa
|
r1229 | } | ||
|
Marek Rosa
|
r1230 | QModelIndex QPieModelMapperPrivate::valueModelIndex(int slicePos) | ||
|
Marek Rosa
|
r1229 | { | ||
|
Marek Rosa
|
r1230 | if (m_count != -1 && slicePos >= m_count) | ||
| return QModelIndex(); // invalid | ||||
|
Marek Rosa
|
r1229 | |||
|
Marek Rosa
|
r1230 | if (m_orientation == Qt::Vertical) | ||
|
Marek Rosa
|
r1320 | return m_model->index(slicePos + m_first, m_valuesSection); | ||
|
Marek Rosa
|
r1230 | else | ||
|
Marek Rosa
|
r1320 | return m_model->index(m_valuesSection, slicePos + m_first); | ||
|
Marek Rosa
|
r1230 | } | ||
|
Marek Rosa
|
r1229 | |||
|
Marek Rosa
|
r1230 | QModelIndex QPieModelMapperPrivate::labelModelIndex(int slicePos) | ||
| { | ||||
| if (m_count != -1 && slicePos >= m_count) | ||||
| return QModelIndex(); // invalid | ||||
| if (m_orientation == Qt::Vertical) | ||||
|
Marek Rosa
|
r1320 | return m_model->index(slicePos + m_first, m_labelsSection); | ||
|
Marek Rosa
|
r1230 | else | ||
|
Marek Rosa
|
r1320 | return m_model->index(m_labelsSection, slicePos + m_first); | ||
|
Marek Rosa
|
r1229 | } | ||
|
Marek Rosa
|
r1251 | bool QPieModelMapperPrivate::isLabelIndex(QModelIndex index) const | ||
| { | ||||
|
Marek Rosa
|
r1320 | if (m_orientation == Qt::Vertical && index.column() == m_labelsSection) | ||
|
Marek Rosa
|
r1251 | return true; | ||
|
Marek Rosa
|
r1320 | else if (m_orientation == Qt::Horizontal && index.row() == m_labelsSection) | ||
|
Marek Rosa
|
r1251 | return true; | ||
| return false; | ||||
| } | ||||
| bool QPieModelMapperPrivate::isValueIndex(QModelIndex index) const | ||||
| { | ||||
|
Marek Rosa
|
r1320 | if (m_orientation == Qt::Vertical && index.column() == m_valuesSection) | ||
|
Marek Rosa
|
r1251 | return true; | ||
|
Marek Rosa
|
r1320 | else if (m_orientation == Qt::Horizontal && index.row() == m_valuesSection) | ||
|
Marek Rosa
|
r1251 | return true; | ||
| return false; | ||||
| } | ||||
|
Marek Rosa
|
r1231 | void QPieModelMapperPrivate::slicesAdded(QList<QPieSlice*> slices) | ||
|
Marek Rosa
|
r1229 | { | ||
|
Marek Rosa
|
r1231 | if (m_seriesSignalsBlock) | ||
| return; | ||||
| if (slices.count() == 0) | ||||
| return; | ||||
| int firstIndex = m_series->slices().indexOf(slices.at(0)); | ||||
| if (firstIndex == -1) | ||||
| return; | ||||
|
Marek Rosa
|
r1236 | if (m_count != -1) | ||
| m_count += slices.count(); | ||||
| for (int i = firstIndex; i < firstIndex + slices.count(); i++) { | ||||
| m_slices.insert(i, slices.at(i - firstIndex)); | ||||
| connect(slices.at(i - firstIndex), SIGNAL(labelChanged()), this, SLOT(sliceLabelChanged())); | ||||
| connect(slices.at(i - firstIndex), SIGNAL(valueChanged()), this, SLOT(sliceValueChanged())); | ||||
| } | ||||
|
Marek Rosa
|
r1231 | blockModelSignals(); | ||
| if (m_orientation == Qt::Vertical) | ||||
| m_model->insertRows(firstIndex + m_first, slices.count()); | ||||
| else | ||||
| m_model->insertColumns(firstIndex + m_first, slices.count()); | ||||
| for(int i = firstIndex; i < firstIndex + slices.count(); i++) { | ||||
| m_model->setData(valueModelIndex(i), slices.at(i - firstIndex)->value()); | ||||
| m_model->setData(labelModelIndex(i), slices.at(i - firstIndex)->label()); | ||||
| } | ||||
| blockModelSignals(false); | ||||
|
Marek Rosa
|
r1229 | } | ||
|
Marek Rosa
|
r1231 | void QPieModelMapperPrivate::slicesRemoved(QList<QPieSlice*> slices) | ||
|
Marek Rosa
|
r1229 | { | ||
|
Marek Rosa
|
r1231 | if (m_seriesSignalsBlock) | ||
| return; | ||||
| if (slices.count() == 0) | ||||
| return; | ||||
|
Marek Rosa
|
r1236 | int firstIndex = m_slices.indexOf(slices.at(0)); | ||
|
Marek Rosa
|
r1231 | if (firstIndex == -1) | ||
| return; | ||||
|
Marek Rosa
|
r1236 | if (m_count != -1) | ||
| m_count -= slices.count(); | ||||
| for (int i = firstIndex + slices.count() - 1; i >= firstIndex; i--) | ||||
| m_slices.removeAt(i); | ||||
|
Marek Rosa
|
r1231 | blockModelSignals(); | ||
| if (m_orientation == Qt::Vertical) | ||||
| m_model->removeRows(firstIndex + m_first, slices.count()); | ||||
| else | ||||
| m_model->removeColumns(firstIndex + m_first, slices.count()); | ||||
| blockModelSignals(false); | ||||
|
Marek Rosa
|
r1229 | } | ||
|
Marek Rosa
|
r1236 | void QPieModelMapperPrivate::sliceLabelChanged() | ||
|
Marek Rosa
|
r1229 | { | ||
|
Marek Rosa
|
r1236 | if (m_seriesSignalsBlock) | ||
| return; | ||||
|
Marek Rosa
|
r1231 | blockModelSignals(); | ||
|
Marek Rosa
|
r1236 | QPieSlice *slice = qobject_cast<QPieSlice *>(QObject::sender()); | ||
| m_model->setData(labelModelIndex(m_series->slices().indexOf(slice)), slice->label()); | ||||
| blockModelSignals(false); | ||||
| } | ||||
| void QPieModelMapperPrivate::sliceValueChanged() | ||||
| { | ||||
| if (m_seriesSignalsBlock) | ||||
| return; | ||||
| blockModelSignals(); | ||||
| QPieSlice *slice = qobject_cast<QPieSlice *>(QObject::sender()); | ||||
| m_model->setData(valueModelIndex(m_series->slices().indexOf(slice)), slice->value()); | ||||
|
Marek Rosa
|
r1231 | blockModelSignals(false); | ||
|
Marek Rosa
|
r1229 | } | ||
| void QPieModelMapperPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight) | ||||
| { | ||||
|
Marek Rosa
|
r1258 | if (m_model == 0 || m_series == 0) | ||
| return; | ||||
|
Marek Rosa
|
r1231 | if (m_modelSignalsBlock) | ||
| return; | ||||
| blockSeriesSignals(); | ||||
|
Marek Rosa
|
r1230 | QModelIndex index; | ||
| QPieSlice *slice; | ||||
|
Marek Rosa
|
r1229 | for (int row = topLeft.row(); row <= bottomRight.row(); row++) { | ||
| for (int column = topLeft.column(); column <= bottomRight.column(); column++) { | ||||
|
Marek Rosa
|
r1230 | index = topLeft.sibling(row, column); | ||
| slice = pieSlice(index); | ||||
| if (slice) { | ||||
|
Marek Rosa
|
r1251 | if (isValueIndex(index)) | ||
| slice->setValue(m_model->data(index, Qt::DisplayRole).toReal()); | ||||
| if (isLabelIndex(index)) | ||||
| slice->setLabel(m_model->data(index, Qt::DisplayRole).toString()); | ||||
|
Marek Rosa
|
r1229 | } | ||
|
Marek Rosa
|
r1230 | } | ||
| } | ||||
|
Marek Rosa
|
r1231 | blockSeriesSignals(false); | ||
|
Marek Rosa
|
r1230 | } | ||
| void QPieModelMapperPrivate::modelRowsAdded(QModelIndex parent, int start, int end) | ||||
| { | ||||
| Q_UNUSED(parent); | ||||
|
Marek Rosa
|
r1231 | if (m_modelSignalsBlock) | ||
| return; | ||||
| blockSeriesSignals(); | ||||
|
Marek Rosa
|
r1230 | if (m_orientation == Qt::Vertical) | ||
| insertData(start, end); | ||||
|
Marek Rosa
|
r1320 | else if (start <= m_valuesSection || start <= m_labelsSection) // if the changes affect the map - reinitialize the pie | ||
|
Marek Rosa
|
r1230 | initializePieFromModel(); | ||
|
Marek Rosa
|
r1231 | blockSeriesSignals(false); | ||
|
Marek Rosa
|
r1230 | } | ||
| void QPieModelMapperPrivate::modelRowsRemoved(QModelIndex parent, int start, int end) | ||||
| { | ||||
| Q_UNUSED(parent); | ||||
|
Marek Rosa
|
r1231 | if (m_modelSignalsBlock) | ||
| return; | ||||
| blockSeriesSignals(); | ||||
|
Marek Rosa
|
r1230 | if (m_orientation == Qt::Vertical) | ||
| removeData(start, end); | ||||
|
Marek Rosa
|
r1320 | else if (start <= m_valuesSection || start <= m_labelsSection) // if the changes affect the map - reinitialize the pie | ||
|
Marek Rosa
|
r1230 | initializePieFromModel(); | ||
|
Marek Rosa
|
r1231 | blockSeriesSignals(false); | ||
|
Marek Rosa
|
r1230 | } | ||
| void QPieModelMapperPrivate::modelColumnsAdded(QModelIndex parent, int start, int end) | ||||
| { | ||||
| Q_UNUSED(parent); | ||||
|
Marek Rosa
|
r1231 | if (m_modelSignalsBlock) | ||
| return; | ||||
| blockSeriesSignals(); | ||||
|
Marek Rosa
|
r1230 | if (m_orientation == Qt::Horizontal) | ||
| insertData(start, end); | ||||
|
Marek Rosa
|
r1320 | else if (start <= m_valuesSection || start <= m_labelsSection) // if the changes affect the map - reinitialize the pie | ||
|
Marek Rosa
|
r1230 | initializePieFromModel(); | ||
|
Marek Rosa
|
r1231 | blockSeriesSignals(false); | ||
|
Marek Rosa
|
r1230 | } | ||
| void QPieModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, int end) | ||||
| { | ||||
| Q_UNUSED(parent); | ||||
|
Marek Rosa
|
r1231 | if (m_modelSignalsBlock) | ||
| return; | ||||
| blockSeriesSignals(); | ||||
|
Marek Rosa
|
r1230 | if (m_orientation == Qt::Horizontal) | ||
| removeData(start, end); | ||||
|
Marek Rosa
|
r1320 | else if (start <= m_valuesSection || start <= m_labelsSection) // if the changes affect the map - reinitialize the pie | ||
|
Marek Rosa
|
r1230 | initializePieFromModel(); | ||
|
Marek Rosa
|
r1231 | blockSeriesSignals(false); | ||
|
Marek Rosa
|
r1230 | } | ||
| void QPieModelMapperPrivate::insertData(int start, int end) | ||||
| { | ||||
|
Marek Rosa
|
r1251 | if (m_model == 0 || m_series == 0) | ||
| return; | ||||
|
Marek Rosa
|
r1230 | 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++) { | ||||
|
Marek Rosa
|
r1320 | QModelIndex valueIndex = valueModelIndex(i - m_first); | ||
| QModelIndex labelIndex = labelModelIndex(i - m_first); | ||||
| if (valueIndex.isValid() && labelIndex.isValid()) { | ||||
| QPieSlice *slice = new QPieSlice; | ||||
| slice->setValue(m_model->data(valueIndex, Qt::DisplayRole).toDouble()); | ||||
| slice->setLabel(m_model->data(labelIndex, Qt::DisplayRole).toString()); | ||||
| slice->setLabelVisible(); | ||||
| connect(slice, SIGNAL(labelChanged()), this, SLOT(sliceLabelChanged())); | ||||
| connect(slice, SIGNAL(valueChanged()), this, SLOT(sliceValueChanged())); | ||||
| m_series->insert(i - m_first, slice); | ||||
| m_slices.insert(i - m_first, slice); | ||||
| } | ||||
|
Marek Rosa
|
r1230 | } | ||
|
Marek Rosa
|
r1231 | |||
| // remove excess of slices (abouve m_count) | ||||
|
Marek Rosa
|
r1230 | if (m_count != -1 && m_series->slices().size() > m_count) | ||
|
Marek Rosa
|
r1236 | for (int i = m_series->slices().size() - 1; i >= m_count; i--) { | ||
|
Marek Rosa
|
r1230 | m_series->remove(m_series->slices().at(i)); | ||
|
Marek Rosa
|
r1236 | m_slices.removeAt(i); | ||
| } | ||||
|
Marek Rosa
|
r1230 | } | ||
| } | ||||
| void QPieModelMapperPrivate::removeData(int start, int end) | ||||
| { | ||||
|
Marek Rosa
|
r1251 | if (m_model == 0 || m_series == 0) | ||
| return; | ||||
|
Marek Rosa
|
r1230 | 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. | ||||
|
Marek Rosa
|
r1236 | for (int i = last; i >= first; i--) { | ||
|
Marek Rosa
|
r1230 | m_series->remove(m_series->slices().at(i - m_first)); | ||
|
Marek Rosa
|
r1236 | m_slices.removeAt(i - m_first); | ||
| } | ||||
|
Marek Rosa
|
r1230 | |||
| 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->slices().size(); | ||||
|
Marek Rosa
|
r1229 | else | ||
|
Marek Rosa
|
r1230 | 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++) { | ||||
|
Marek Rosa
|
r1320 | QModelIndex valueIndex = valueModelIndex(i - m_first); | ||
| QModelIndex labelIndex = labelModelIndex(i - m_first); | ||||
| if (valueIndex.isValid() && labelIndex.isValid()) { | ||||
| QPieSlice *slice = new QPieSlice; | ||||
| slice->setValue(m_model->data(valueIndex, Qt::DisplayRole).toDouble()); | ||||
| slice->setLabel(m_model->data(labelIndex, Qt::DisplayRole).toString()); | ||||
| slice->setLabelVisible(); | ||||
| m_series->insert(i, slice); | ||||
| m_slices.insert(i, slice); | ||||
|
Marek Rosa
|
r1230 | } | ||
|
Marek Rosa
|
r1229 | } | ||
| } | ||||
| } | ||||
| } | ||||
|
Marek Rosa
|
r1230 | void QPieModelMapperPrivate::initializePieFromModel() | ||
| { | ||||
| if (m_model == 0 || m_series == 0) | ||||
| return; | ||||
|
Marek Rosa
|
r1229 | |||
|
Marek Rosa
|
r1231 | blockSeriesSignals(); | ||
|
Marek Rosa
|
r1236 | // clear current content | ||
| m_series->clear(); | ||||
| m_slices.clear(); | ||||
|
Marek Rosa
|
r1230 | // create the initial slices set | ||
| int slicePos = 0; | ||||
| QModelIndex valueIndex = valueModelIndex(slicePos); | ||||
| QModelIndex labelIndex = labelModelIndex(slicePos); | ||||
| while (valueIndex.isValid() && labelIndex.isValid()) { | ||||
|
Marek Rosa
|
r1236 | QPieSlice *slice = new QPieSlice; | ||
| slice->setLabel(m_model->data(labelIndex, Qt::DisplayRole).toString()); | ||||
| slice->setValue(m_model->data(valueIndex, Qt::DisplayRole).toDouble()); | ||||
| connect(slice, SIGNAL(labelChanged()), this, SLOT(sliceLabelChanged())); | ||||
| connect(slice, SIGNAL(valueChanged()), this, SLOT(sliceValueChanged())); | ||||
| m_series->append(slice); | ||||
| m_slices.append(slice); | ||||
|
Marek Rosa
|
r1251 | // m_series->append(m_model->data(labelIndex, Qt::DisplayRole).toString(), m_model->data(valueIndex, Qt::DisplayRole).toDouble()); | ||
|
Marek Rosa
|
r1230 | slicePos++; | ||
| valueIndex = valueModelIndex(slicePos); | ||||
| labelIndex = labelModelIndex(slicePos); | ||||
| } | ||||
| m_series->setLabelsVisible(true); | ||||
|
Marek Rosa
|
r1231 | blockSeriesSignals(false); | ||
|
Marek Rosa
|
r1230 | } | ||
|
Marek Rosa
|
r1229 | |||
| #include "moc_qpiemodelmapper_p.cpp" | ||||
|
Marek Rosa
|
r1164 | #include "moc_qpiemodelmapper.cpp" | ||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||