qpiemodelmapper.cpp
577 lines
| 19.0 KiB
| text/x-c
|
CppLexer
|
r2854 | /**************************************************************************** | ||
|
r1309 | ** | ||
|
r2854 | ** Copyright (C) 2016 The Qt Company Ltd. | ||
** Contact: https://www.qt.io/licensing/ | ||||
|
r1309 | ** | ||
|
r2854 | ** This file is part of the Qt Charts module of the Qt Toolkit. | ||
|
r1309 | ** | ||
|
r2854 | ** $QT_BEGIN_LICENSE:GPL$ | ||
|
r2845 | ** 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 | ||||
|
r2854 | ** 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. | ||||
|
r1309 | ** | ||
|
r2845 | ** $QT_END_LICENSE$ | ||
** | ||||
|
r2854 | ****************************************************************************/ | ||
|
r1309 | |||
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r2714 | #include <QtCharts/QPieModelMapper> | ||
#include <private/qpiemodelmapper_p.h> | ||||
#include <QtCharts/QPieSeries> | ||||
#include <QtCharts/QPieSlice> | ||||
#include <QtCore/QAbstractItemModel> | ||||
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r1164 | |||
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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r1164 | |||
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r2131 | QPieModelMapper::QPieModelMapper(QObject *parent) | ||
: QObject(parent), | ||||
d_ptr(new QPieModelMapperPrivate(this)) | ||||
|
r1164 | { | ||
} | ||||
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r2104 | QAbstractItemModel *QPieModelMapper::model() const | ||
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r1230 | { | ||
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))); | ||||
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r1656 | connect(d->m_model, SIGNAL(destroyed()), d, SLOT(handleModelDestroyed())); | ||
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r1230 | } | ||
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r2104 | QPieSeries *QPieModelMapper::series() const | ||
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r1230 | { | ||
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); | ||||
} | ||||
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r1252 | if (series == 0) | ||
return; | ||||
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r1230 | d->m_series = series; | ||
d->initializePieFromModel(); | ||||
// connect the signals from the series | ||||
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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*>))); | ||||
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r1656 | connect(d->m_series, SIGNAL(destroyed()), d, SLOT(handleSeriesDestroyed())); | ||
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r1230 | } | ||
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r1499 | /*! | ||
Defines which row/column of the model contains the first slice value. | ||||
Minimal and default value is: 0 | ||||
*/ | ||||
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r1164 | int QPieModelMapper::first() const | ||
{ | ||||
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r1229 | Q_D(const QPieModelMapper); | ||
return d->m_first; | ||||
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r1164 | } | ||
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r1499 | /*! | ||
Sets which row/column of the model contains the \a first slice value. | ||||
Minimal and default value is: 0 | ||||
*/ | ||||
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r1164 | void QPieModelMapper::setFirst(int first) | ||
{ | ||||
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r1229 | Q_D(QPieModelMapper); | ||
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r1499 | d->m_first = qMax(first, 0); | ||
d->initializePieFromModel(); | ||||
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r1164 | } | ||
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r1499 | /*! | ||
Defines the number of rows/columns of the model that are mapped as the data for QPieSeries | ||||
Minimal and default value is: -1 (count limited by the number of rows/columns in the model) | ||||
*/ | ||||
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r1164 | int QPieModelMapper::count() const | ||
{ | ||||
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r1229 | Q_D(const QPieModelMapper); | ||
return d->m_count; | ||||
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r1164 | } | ||
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r1499 | /*! | ||
Defines the \a count of rows/columns of the model that are mapped as the data for QPieSeries | ||||
Minimal and default value is: -1 (count limited by the number of rows/columns in the model) | ||||
*/ | ||||
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r1164 | void QPieModelMapper::setCount(int count) | ||
{ | ||||
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r1229 | Q_D(QPieModelMapper); | ||
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r1499 | d->m_count = qMax(count, -1); | ||
d->initializePieFromModel(); | ||||
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r1164 | } | ||
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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) | ||||
*/ | ||||
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r1164 | Qt::Orientation QPieModelMapper::orientation() const | ||
{ | ||||
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r1229 | Q_D(const QPieModelMapper); | ||
return d->m_orientation; | ||||
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r1164 | } | ||
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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) | ||||
*/ | ||||
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r1164 | void QPieModelMapper::setOrientation(Qt::Orientation orientation) | ||
{ | ||||
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r1229 | Q_D(QPieModelMapper); | ||
d->m_orientation = orientation; | ||||
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r1230 | d->initializePieFromModel(); | ||
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r1164 | } | ||
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r1340 | /*! | ||
Returns which section of the model is kept in sync with the values of the pie's slices | ||||
*/ | ||||
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r1320 | int QPieModelMapper::valuesSection() const | ||
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r1164 | { | ||
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r1229 | Q_D(const QPieModelMapper); | ||
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r1320 | return d->m_valuesSection; | ||
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r1164 | } | ||
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r1340 | /*! | ||
Sets the model section that is kept in sync with the pie slices values. | ||||
Parameter \a valuesSection specifies the section of the model. | ||||
*/ | ||||
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r1320 | void QPieModelMapper::setValuesSection(int valuesSection) | ||
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r1164 | { | ||
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r1229 | Q_D(QPieModelMapper); | ||
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r1320 | d->m_valuesSection = qMax(-1, valuesSection); | ||
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r1230 | d->initializePieFromModel(); | ||
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r1164 | } | ||
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r1340 | /*! | ||
Returns which section of the model is kept in sync with the labels of the pie's slices | ||||
*/ | ||||
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r1320 | int QPieModelMapper::labelsSection() const | ||
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r1164 | { | ||
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r1229 | Q_D(const QPieModelMapper); | ||
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r1320 | return d->m_labelsSection; | ||
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r1164 | } | ||
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r1340 | /*! | ||
Sets the model section that is kept in sync with the pie slices labels. | ||||
Parameter \a labelsSection specifies the section of the model. | ||||
*/ | ||||
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r1320 | void QPieModelMapper::setLabelsSection(int labelsSection) | ||
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r1164 | { | ||
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r1229 | Q_D(QPieModelMapper); | ||
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r1320 | d->m_labelsSection = qMax(-1, labelsSection); | ||
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r1230 | d->initializePieFromModel(); | ||
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r1164 | } | ||
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r1229 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
QPieModelMapperPrivate::QPieModelMapperPrivate(QPieModelMapper *q) : | ||||
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r1671 | QObject(q), | ||
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r1249 | m_series(0), | ||
m_model(0), | ||||
m_first(0), | ||||
m_count(-1), | ||||
m_orientation(Qt::Vertical), | ||||
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r1320 | m_valuesSection(-1), | ||
m_labelsSection(-1), | ||||
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r1249 | m_seriesSignalsBlock(false), | ||
m_modelSignalsBlock(false), | ||||
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r1229 | q_ptr(q) | ||
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r1164 | { | ||
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r1231 | } | ||
void QPieModelMapperPrivate::blockModelSignals(bool block) | ||||
{ | ||||
m_modelSignalsBlock = block; | ||||
} | ||||
void QPieModelMapperPrivate::blockSeriesSignals(bool block) | ||||
{ | ||||
m_seriesSignalsBlock = block; | ||||
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r1164 | } | ||
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r1229 | |||
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r2104 | QPieSlice *QPieModelMapperPrivate::pieSlice(QModelIndex index) const | ||
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r1230 | { | ||
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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; | ||||
} | ||||
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r1230 | } | ||
return 0; // This part of model has not been mapped to any slice | ||||
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r1229 | } | ||
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r1230 | QModelIndex QPieModelMapperPrivate::valueModelIndex(int slicePos) | ||
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r1229 | { | ||
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r1230 | if (m_count != -1 && slicePos >= m_count) | ||
return QModelIndex(); // invalid | ||||
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r1229 | |||
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r1230 | if (m_orientation == Qt::Vertical) | ||
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r1320 | return m_model->index(slicePos + m_first, m_valuesSection); | ||
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r1230 | else | ||
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r1320 | return m_model->index(m_valuesSection, slicePos + m_first); | ||
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r1230 | } | ||
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r1229 | |||
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r1230 | QModelIndex QPieModelMapperPrivate::labelModelIndex(int slicePos) | ||
{ | ||||
if (m_count != -1 && slicePos >= m_count) | ||||
return QModelIndex(); // invalid | ||||
if (m_orientation == Qt::Vertical) | ||||
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r1320 | return m_model->index(slicePos + m_first, m_labelsSection); | ||
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r1230 | else | ||
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r1320 | return m_model->index(m_labelsSection, slicePos + m_first); | ||
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r1229 | } | ||
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r1251 | bool QPieModelMapperPrivate::isLabelIndex(QModelIndex index) const | ||
{ | ||||
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r1320 | if (m_orientation == Qt::Vertical && index.column() == m_labelsSection) | ||
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r1251 | return true; | ||
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r1320 | else if (m_orientation == Qt::Horizontal && index.row() == m_labelsSection) | ||
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r1251 | return true; | ||
return false; | ||||
} | ||||
bool QPieModelMapperPrivate::isValueIndex(QModelIndex index) const | ||||
{ | ||||
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r1320 | if (m_orientation == Qt::Vertical && index.column() == m_valuesSection) | ||
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r1251 | return true; | ||
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r1320 | else if (m_orientation == Qt::Horizontal && index.row() == m_valuesSection) | ||
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r1251 | return true; | ||
return false; | ||||
} | ||||
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r2104 | void QPieModelMapperPrivate::slicesAdded(QList<QPieSlice *> slices) | ||
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r1229 | { | ||
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r1231 | if (m_seriesSignalsBlock) | ||
return; | ||||
if (slices.count() == 0) | ||||
return; | ||||
int firstIndex = m_series->slices().indexOf(slices.at(0)); | ||||
if (firstIndex == -1) | ||||
return; | ||||
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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())); | ||||
} | ||||
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r1231 | blockModelSignals(); | ||
if (m_orientation == Qt::Vertical) | ||||
m_model->insertRows(firstIndex + m_first, slices.count()); | ||||
else | ||||
m_model->insertColumns(firstIndex + m_first, slices.count()); | ||||
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r2097 | for (int i = firstIndex; i < firstIndex + slices.count(); i++) { | ||
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r1231 | m_model->setData(valueModelIndex(i), slices.at(i - firstIndex)->value()); | ||
m_model->setData(labelModelIndex(i), slices.at(i - firstIndex)->label()); | ||||
} | ||||
blockModelSignals(false); | ||||
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r1229 | } | ||
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r2104 | void QPieModelMapperPrivate::slicesRemoved(QList<QPieSlice *> slices) | ||
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r1229 | { | ||
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r1231 | if (m_seriesSignalsBlock) | ||
return; | ||||
if (slices.count() == 0) | ||||
return; | ||||
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r1236 | int firstIndex = m_slices.indexOf(slices.at(0)); | ||
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r1231 | if (firstIndex == -1) | ||
return; | ||||
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r1236 | if (m_count != -1) | ||
m_count -= slices.count(); | ||||
for (int i = firstIndex + slices.count() - 1; i >= firstIndex; i--) | ||||
m_slices.removeAt(i); | ||||
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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); | ||||
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r1229 | } | ||
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r1236 | void QPieModelMapperPrivate::sliceLabelChanged() | ||
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r1229 | { | ||
|
r1236 | if (m_seriesSignalsBlock) | ||
return; | ||||
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r1231 | blockModelSignals(); | ||
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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()); | ||||
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r1231 | blockModelSignals(false); | ||
|
r1229 | } | ||
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r1656 | void QPieModelMapperPrivate::handleSeriesDestroyed() | ||
{ | ||||
m_series = 0; | ||||
} | ||||
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r1229 | void QPieModelMapperPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight) | ||
{ | ||||
|
r1258 | if (m_model == 0 || m_series == 0) | ||
return; | ||||
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r1231 | if (m_modelSignalsBlock) | ||
return; | ||||
blockSeriesSignals(); | ||||
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r1230 | QModelIndex index; | ||
QPieSlice *slice; | ||||
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r1229 | for (int row = topLeft.row(); row <= bottomRight.row(); row++) { | ||
for (int column = topLeft.column(); column <= bottomRight.column(); column++) { | ||||
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r1230 | index = topLeft.sibling(row, column); | ||
slice = pieSlice(index); | ||||
if (slice) { | ||||
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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()); | ||||
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r1229 | } | ||
|
r1230 | } | ||
} | ||||
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r1231 | blockSeriesSignals(false); | ||
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r1230 | } | ||
void QPieModelMapperPrivate::modelRowsAdded(QModelIndex parent, int start, int end) | ||||
{ | ||||
Q_UNUSED(parent); | ||||
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r1231 | if (m_modelSignalsBlock) | ||
return; | ||||
blockSeriesSignals(); | ||||
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r1230 | if (m_orientation == Qt::Vertical) | ||
insertData(start, end); | ||||
|
r1320 | else if (start <= m_valuesSection || start <= m_labelsSection) // if the changes affect the map - reinitialize the pie | ||
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r1230 | initializePieFromModel(); | ||
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r1231 | blockSeriesSignals(false); | ||
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r1230 | } | ||
void QPieModelMapperPrivate::modelRowsRemoved(QModelIndex parent, int start, int end) | ||||
{ | ||||
Q_UNUSED(parent); | ||||
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r1231 | if (m_modelSignalsBlock) | ||
return; | ||||
blockSeriesSignals(); | ||||
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r1230 | if (m_orientation == Qt::Vertical) | ||
removeData(start, end); | ||||
|
r1320 | else if (start <= m_valuesSection || start <= m_labelsSection) // if the changes affect the map - reinitialize the pie | ||
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r1230 | initializePieFromModel(); | ||
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r1231 | blockSeriesSignals(false); | ||
|
r1230 | } | ||
void QPieModelMapperPrivate::modelColumnsAdded(QModelIndex parent, int start, int end) | ||||
{ | ||||
Q_UNUSED(parent); | ||||
|
r1231 | if (m_modelSignalsBlock) | ||
return; | ||||
blockSeriesSignals(); | ||||
|
r1230 | if (m_orientation == Qt::Horizontal) | ||
insertData(start, end); | ||||
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r1320 | else if (start <= m_valuesSection || start <= m_labelsSection) // if the changes affect the map - reinitialize the pie | ||
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r1230 | initializePieFromModel(); | ||
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r1231 | blockSeriesSignals(false); | ||
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r1230 | } | ||
void QPieModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, int end) | ||||
{ | ||||
Q_UNUSED(parent); | ||||
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r1231 | if (m_modelSignalsBlock) | ||
return; | ||||
blockSeriesSignals(); | ||||
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r1230 | if (m_orientation == Qt::Horizontal) | ||
removeData(start, end); | ||||
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r1320 | else if (start <= m_valuesSection || start <= m_labelsSection) // if the changes affect the map - reinitialize the pie | ||
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r1230 | initializePieFromModel(); | ||
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r1231 | blockSeriesSignals(false); | ||
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r1230 | } | ||
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r1656 | void QPieModelMapperPrivate::handleModelDestroyed() | ||
{ | ||||
m_model = 0; | ||||
} | ||||
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r1230 | void QPieModelMapperPrivate::insertData(int start, int end) | ||
{ | ||||
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r1251 | if (m_model == 0 || m_series == 0) | ||
return; | ||||
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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++) { | ||||
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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()); | ||||
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r1474 | slice->setLabel(m_model->data(labelIndex, Qt::DisplayRole).toString()); | ||
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r1320 | 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); | ||||
} | ||||
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r1230 | } | ||
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r1231 | |||
// remove excess of slices (abouve m_count) | ||||
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r1230 | if (m_count != -1 && m_series->slices().size() > m_count) | ||
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r1236 | for (int i = m_series->slices().size() - 1; i >= m_count; i--) { | ||
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r1230 | m_series->remove(m_series->slices().at(i)); | ||
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r1236 | m_slices.removeAt(i); | ||
} | ||||
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r1230 | } | ||
} | ||||
void QPieModelMapperPrivate::removeData(int start, int end) | ||||
{ | ||||
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r1251 | if (m_model == 0 || m_series == 0) | ||
return; | ||||
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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. | ||||
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r1236 | for (int i = last; i >= first; i--) { | ||
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r1230 | m_series->remove(m_series->slices().at(i - m_first)); | ||
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r1236 | m_slices.removeAt(i - m_first); | ||
} | ||||
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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(); | ||||
|
r1229 | else | ||
|
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++) { | ||||
|
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()); | ||||
m_series->insert(i, slice); | ||||
m_slices.insert(i, slice); | ||||
|
r1230 | } | ||
|
r1229 | } | ||
} | ||||
} | ||||
} | ||||
|
r1230 | void QPieModelMapperPrivate::initializePieFromModel() | ||
{ | ||||
if (m_model == 0 || m_series == 0) | ||||
return; | ||||
|
r1229 | |||
|
r1231 | blockSeriesSignals(); | ||
|
r1236 | // clear current content | ||
m_series->clear(); | ||||
m_slices.clear(); | ||||
|
r1230 | // create the initial slices set | ||
int slicePos = 0; | ||||
QModelIndex valueIndex = valueModelIndex(slicePos); | ||||
QModelIndex labelIndex = labelModelIndex(slicePos); | ||||
while (valueIndex.isValid() && labelIndex.isValid()) { | ||||
|
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); | ||||
|
r1230 | slicePos++; | ||
valueIndex = valueModelIndex(slicePos); | ||||
labelIndex = labelModelIndex(slicePos); | ||||
|
r1474 | } | ||
|
r1231 | blockSeriesSignals(false); | ||
|
r1230 | } | ||
|
r1229 | |||
#include "moc_qpiemodelmapper_p.cpp" | ||||
|
r1164 | #include "moc_qpiemodelmapper.cpp" | ||
|
r2712 | QT_CHARTS_END_NAMESPACE | ||