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Documentation for stacked barchart drilldown example
Documentation for stacked barchart drilldown example
Jani Honkonen - - Load All Authors

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qpieseries.cpp
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/ src / piechart / qpieseries.cpp
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Jani Honkonen
Pie chart refactoring
 r142 #include "qpieseries.h"
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 #include "qpieslice.h"
Jani Honkonen
Pie chart refactoring
 r142 #include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
Jani Honkonen
More documentation for pie
 r320
Jani Honkonen
Add documentation to pie
 r314 /*!
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More documentation for pie
 r320 \class QPieSeries::ChangeSet
\brief Defines the changes in the series.
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Add documentation to pie
 r314
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More documentation for pie
 r320 Contains the changes that have occurred in the series. Lists of added, changed and removed slices.
Jani Honkonen
Add documentation to pie
 r314
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More documentation for pie
 r320 \sa QPieSeries::changed()
Jani Honkonen
Add documentation to pie
 r314 */
/*!
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More documentation for pie
 r320 \internal
Jani Honkonen
Add documentation to pie
 r314 */
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 void QPieSeries::ChangeSet::appendAdded(QPieSlice* slice)
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 if (!m_added.contains(slice))
m_added << slice;
Jani Honkonen
Pie chart refactoring
 r142 }
Jani Honkonen
More documentation for pie
 r320 /*!
\internal
*/
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 void QPieSeries::ChangeSet::appendAdded(QList<QPieSlice*> slices)
{
foreach (QPieSlice* s, slices)
appendAdded(s);
}
Jani Honkonen
More documentation for pie
 r320 /*!
\internal
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 void QPieSeries::ChangeSet::appendChanged(QPieSlice* slice)
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 if (!m_changed.contains(slice))
m_changed << slice;
}
Jani Honkonen
Pie chart refactoring
 r142
Jani Honkonen
More documentation for pie
 r320 /*!
\internal
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 void QPieSeries::ChangeSet::appendRemoved(QPieSlice* slice)
{
if (!m_removed.contains(slice))
m_removed << slice;
Jani Honkonen
Pie chart refactoring
 r142 }
Jani Honkonen
Add documentation to pie
 r314 /*!
Returns a list of slices that have been added to the series.
\sa QPieSeries::changed()
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 QList<QPieSlice*> QPieSeries::ChangeSet::added() const
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 return m_added;
Jani Honkonen
Make pie work better with chartwidgettest
 r163 }
Jani Honkonen
Add documentation to pie
 r314 /*!
Returns a list of slices that have been changed in the series.
\sa QPieSeries::changed()
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 QList<QPieSlice*> QPieSeries::ChangeSet::changed() const
Jani Honkonen
Make pie work better with chartwidgettest
 r163 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 return m_changed;
}
Jani Honkonen
Make pie work better with chartwidgettest
 r163
Jani Honkonen
Add documentation to pie
 r314 /*!
Returns a list of slices that have been removed from the series.
\sa QPieSeries::changed()
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 QList<QPieSlice*> QPieSeries::ChangeSet::removed() const
{
return m_removed;
}
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157
Jani Honkonen
Add documentation to pie
 r314
/*!
Returns true if there are no added/changed or removed slices in the change set.
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 bool QPieSeries::ChangeSet::isEmpty() const
{
if (m_added.count() || m_changed.count() || m_removed.count())
return false;
return true;
}
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157
Jani Honkonen
More documentation for pie
 r320 /*!
\class QPieSeries
\brief Pie series API for QtCommercial Charts
The pie series defines a pie chart which consists of pie slices which are QPieSlice objects.
The slices can have any values as the QPieSeries will calculate its relative value to the sum of all slices.
Jani Honkonen
Review corrections for pie
 r386 The actual slice size is determined by that relative value.
Jani Honkonen
More documentation for pie
 r320
Jani Honkonen
Review corrections for pie
 r386 By default the pie is defined as a full pie but it can be a partial pie.
Jani Honkonen
More documentation for pie
 r320 This can be done by setting a starting angle and angle span to the series.
*/
Jani Honkonen
Add documentation to pie
 r314 /*!
Constructs a series object which is a child of \a parent.
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 QPieSeries::QPieSeries(QObject *parent) :
Michal Klocek
Rename QChartSeries to QSeries
 r360 QSeries(parent),
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 m_hPositionFactor(0.5),
m_vPositionFactor(0.5),
m_pieSizeFactor(0.7),
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 m_pieStartAngle(0),
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 m_pieEndAngle(360),
m_total(0)
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 {
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 }
Jani Honkonen
Refactoring piechart API (and internals)
 r174
Jani Honkonen
Add documentation to pie
 r314 /*!
Destroys the object. Note that adding series to QChart transfers the ownership to the chart.
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 QPieSeries::~QPieSeries()
{
Jani Honkonen
Fix a major memory leak
 r204
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 }
Jani Honkonen
Add documentation to pie
 r314 /*!
Jani Honkonen
More documentation for pie
 r320 Returns QChartSeries::SeriesTypePie.
Jani Honkonen
Add documentation to pie
 r314 */
Michal Klocek
Rename QChartSeries to QSeries
 r360 QSeries::QSeriesType QPieSeries::type() const
Jani Honkonen
Add documentation to pie
 r314 {
Michal Klocek
Rename QChartSeries to QSeries
 r360 return QSeries::SeriesTypePie;
Jani Honkonen
Add documentation to pie
 r314 }
/*!
Jani Honkonen
QPieSeries::set() -> replace()
 r354 Sets an array of \a slices to the series replacing the existing slices.
Jani Honkonen
Add documentation to pie
 r314 Slice ownership is passed to the series.
*/
Jani Honkonen
QPieSeries::set() -> replace()
 r354 void QPieSeries::replace(QList<QPieSlice*> slices)
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 clear();
add(slices);
}
Jani Honkonen
Make pie work better with chartwidgettest
 r163
Jani Honkonen
Add documentation to pie
 r314 /*!
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Update pie doc
 r345 Adds an array of \a slices to the series.
Jani Honkonen
Add documentation to pie
 r314 Slice ownership is passed to the series.
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 void QPieSeries::add(QList<QPieSlice*> slices)
{
Jani Honkonen
Refactoring piechart API (and internals)
 r174 ChangeSet changeSet;
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 foreach (QPieSlice* s, slices) {
s->setParent(this);
m_slices << s;
changeSet.appendAdded(s);
Jani Honkonen
Refactoring piechart API (and internals)
 r174 }
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157
Jani Honkonen
Refactoring piechart API (and internals)
 r174 updateDerivativeData();
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 foreach (QPieSlice* s, slices) {
connect(s, SIGNAL(changed()), this, SLOT(sliceChanged()));
connect(s, SIGNAL(clicked()), this, SLOT(sliceClicked()));
connect(s, SIGNAL(hoverEnter()), this, SLOT(sliceHoverEnter()));
connect(s, SIGNAL(hoverLeave()), this, SLOT(sliceHoverLeave()));
}
emit changed(changeSet);
Jani Honkonen
Pie chart refactoring
 r142 }
Jani Honkonen
Add documentation to pie
 r314 /*!
Adds a single \a slice to the series.
Slice ownership is passed to the series.
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 void QPieSeries::add(QPieSlice* slice)
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 add(QList<QPieSlice*>() << slice);
Jani Honkonen
Pie chart refactoring
 r142 }
Jani Honkonen
Update pie series doc
 r415 /*!
Adds a single \a slice to the series and returns a reference to the series.
Slice ownership is passed to the series.
*/
Jani Honkonen
Add drilldown example for piechart
 r406 QPieSeries& QPieSeries::operator << (QPieSlice* slice)
{
add(slice);
return *this;
}
Jani Honkonen
Add documentation to pie
 r314
/*!
Adds a single slice to the series with give \a value and \a name.
Slice ownership is passed to the series.
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 QPieSlice* QPieSeries::add(qreal value, QString name)
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 QPieSlice* slice = new QPieSlice(value, name);
add(slice);
return slice;
}
Jani Honkonen
Refactoring piechart API (and internals)
 r174
Jani Honkonen
Add documentation to pie
 r314 /*!
Removes a single \a slice from the series and deletes the slice.
Jani Honkonen
More documentation for pie
 r320
Jani Honkonen
Add documentation to pie
 r314 Do not reference this pointer after this call.
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 void QPieSeries::remove(QPieSlice* slice)
{
if (!m_slices.removeOne(slice)) {
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 Q_ASSERT(0); // TODO: how should this be reported?
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 return;
}
Jani Honkonen
Refactoring piechart API (and internals)
 r174
ChangeSet changeSet;
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 changeSet.appendRemoved(slice);
Jani Honkonen
Refactoring piechart API (and internals)
 r174 emit changed(changeSet);
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 delete slice;
slice = NULL;
updateDerivativeData();
Jani Honkonen
Pie chart refactoring
 r142 }
Jani Honkonen
Add documentation to pie
 r314 /*!
Clears all slices from the series.
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 void QPieSeries::clear()
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 if (m_slices.count() == 0)
return;
Jani Honkonen
Refactoring piechart API (and internals)
 r174
ChangeSet changeSet;
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 foreach (QPieSlice* s, m_slices) {
changeSet.appendRemoved(s);
m_slices.removeOne(s);
delete s;
}
Jani Honkonen
Refactoring piechart API (and internals)
 r174 emit changed(changeSet);
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 updateDerivativeData();
Jani Honkonen
Pie chart refactoring
 r142 }
Jani Honkonen
Add documentation to pie
 r314 /*!
Counts the number of the slices in this series.
*/
int QPieSeries::count() const
{
return m_slices.count();
}
/*!
Returns a list of slices that belong to this series.
*/
QList<QPieSlice*> QPieSeries::slices() const
{
return m_slices;
}
/*!
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 Sets the center position of the pie by \a horizontalFactor and \a verticalFactor.
The factors are relative to the chart rectangle where:
\a horizontalFactor 0.0 means the absolute left.
\a horizontalFactor 1.0 means the absolute right.
\a verticalFactor 0.0 means the absolute top.
\a verticalFactor 1.0 means the absolute bottom.
By default \a horizontalFactor and \a verticalFactor are 0.5 which puts the pie in the middle of the chart rectangle.
\sa horizontalPositionFactor(), verticalPositionFactor(), setSizeFactor()
Jani Honkonen
Add documentation to pie
 r314 */
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 void QPieSeries::setPositionFactors(qreal horizontalFactor, qreal verticalFactor)
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 if (horizontalFactor < 0.0 || horizontalFactor > 1.0 || verticalFactor < 0.0 || verticalFactor > 1.0)
Jani Honkonen
Make pie work better with chartwidgettest
 r163 return;
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 if (m_hPositionFactor != horizontalFactor || m_vPositionFactor != verticalFactor) {
m_hPositionFactor = horizontalFactor;
m_vPositionFactor = verticalFactor;
emit positionChanged();
Jani Honkonen
Make pie work better with chartwidgettest
 r163 }
Jani Honkonen
Pie chart refactoring
 r142 }
Jani Honkonen
Add documentation to pie
 r314 /*!
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 Gets the horizontal position factor of the pie.
Jani Honkonen
Add documentation to pie
 r314
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 The factors are relative to the chart rectangle where:
Horizontal factor 0.0 means the absolute left.
Horizontal factor 1.0 means the absolute right.
By default horizontal factor is 0.5 which puts the pie in the horizontal middle of the chart rectangle.
\sa setPositionFactors(), verticalPositionFactor(), setSizeFactor()
Jani Honkonen
Add documentation to pie
 r314 */
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 qreal QPieSeries::horizontalPositionFactor() const
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 return m_hPositionFactor;
Jani Honkonen
Pie chart refactoring
 r142 }
Jani Honkonen
Add documentation to pie
 r314 /*!
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 Gets the vertical position factor of the pie.
The factors are relative to the chart rectangle where:
Vertical factor 0.0 means the absolute top.
Vertical factor 1.0 means the absolute bottom.
By default vertical factor is 0.5 which puts the pie in the vertical middle of the chart rectangle.
\sa setPositionFactors(), horizontalPositionFactor(), setSizeFactor()
Jani Honkonen
Add documentation to pie
 r314 */
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 qreal QPieSeries::verticalPositionFactor() const
Jani Honkonen
Add documentation to pie
 r314 {
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 return m_vPositionFactor;
Jani Honkonen
Add documentation to pie
 r314 }
/*!
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 Sets the size \a sizeFactor of the pie.
The size factor is defined so that the 1.0 is the maximum that can fit the given chart rectangle.
Default value is 0.7.
\sa sizeFactor(), setPositionFactors(), verticalPositionFactor(), horizontalPositionFactor()
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 */
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 void QPieSeries::setSizeFactor(qreal sizeFactor)
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 {
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 if (sizeFactor < 0.0)
return;
if (m_pieSizeFactor != sizeFactor) {
m_pieSizeFactor = sizeFactor;
emit sizeFactorChanged();
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 }
}
Jani Honkonen
Add documentation to pie
 r314
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 /*!
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 Gets the size factor of the pie.
The size factor is defined so that the 1.0 is the maximum that can fit the given chart rectangle.
Default value is 0.7.
\sa setSizeFactor(), setPositionFactors(), verticalPositionFactor(), horizontalPositionFactor()
Jani Honkonen
Add documentation to pie
 r314 */
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 qreal QPieSeries::sizeFactor() const
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 {
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 return m_pieSizeFactor;
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 }
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 /*!
Sets the end angle of the pie.
Full pie is 360 degrees where 0 degrees is at 12 a'clock.
\a startAngle must be less than end angle. Default value is 0.
\sa startAngle(), endAngle(), setEndAngle()
*/
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 void QPieSeries::setStartAngle(qreal startAngle)
{
if (startAngle >= 0 && startAngle <= 360 && startAngle != m_pieStartAngle && startAngle <= m_pieEndAngle) {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 m_pieStartAngle = startAngle;
updateDerivativeData();
}
}
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 /*!
Gets the start angle of the pie.
Full pie is 360 degrees where 0 degrees is at 12 a'clock. Default value is 360.
\sa setStartAngle(), endAngle(), setEndAngle()
*/
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 qreal QPieSeries::startAngle() const
{
return m_pieStartAngle;
}
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 /*!
Sets the end angle of the pie.
Full pie is 360 degrees where 0 degrees is at 12 a'clock.
\a endAngle must be greater than start angle.
\sa endAngle(), startAngle(), setStartAngle()
*/
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 void QPieSeries::setEndAngle(qreal endAngle)
{
if (endAngle >= 0 && endAngle <= 360 && endAngle != m_pieEndAngle && endAngle >= m_pieStartAngle) {
m_pieEndAngle = endAngle;
updateDerivativeData();
}
}
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 /*!
Returns the end angle of the pie.
Full pie is 360 degrees where 0 degrees is at 12 a'clock.
\sa setEndAngle(), startAngle(), setStartAngle()
*/
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 qreal QPieSeries::endAngle() const
{
return m_pieEndAngle;
}
Jani Honkonen
Add documentation to pie
 r314 /*!
Sets the all the slice labels \a visible or invisible.
\sa QPieSlice::isLabelVisible(), QPieSlice::setLabelVisible()
*/
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 void QPieSeries::setLabelsVisible(bool visible)
{
foreach (QPieSlice* s, m_slices)
s->setLabelVisible(visible);
}
Jani Honkonen
Add drilldown example for piechart
 r406 /*!
Returns the sum of all slice values in this series.
\sa QPieSlice::value(), QPieSlice::setValue()
*/
qreal QPieSeries::total() const
{
return m_total;
}
Jani Honkonen
Add documentation to pie
 r314 /*!
\fn void QPieSeries::changed(const QPieSeries::ChangeSet& changeSet)
This signal emitted when something has changed in the series.
The \a changeSet contains the details of which slices have been added, changed or removed.
\sa QPieSeries::ChangeSet, QPieSlice::changed()
*/
/*!
\fn void QPieSeries::clicked(QPieSlice* slice)
This signal is emitted when a \a slice has been clicked.
\sa QPieSlice::clicked()
*/
/*!
\fn void QPieSeries::hoverEnter(QPieSlice* slice)
This signal is emitted when user has hovered over a \a slice.
\sa QPieSlice::hoverEnter()
*/
/*!
\fn void QPieSeries::hoverLeave(QPieSlice* slice)
This signal is emitted when user has hovered away from a \a slice.
\sa QPieSlice::hoverLeave()
*/
/*!
\fn void QPieSeries::sizeFactorChanged()
This signal is emitted when size factor has been changed.
\sa sizeFactor(), setSizeFactor()
*/
/*!
\fn void QPieSeries::positionChanged()
This signal is emitted when position of the pie has been changed.
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 \sa horizontalPositionFactor(), verticalPositionFactor(), setPositionFactors()
Jani Honkonen
Add documentation to pie
 r314 */
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 void QPieSeries::sliceChanged()
{
QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
Q_ASSERT(m_slices.contains(slice));
ChangeSet changeSet;
changeSet.appendChanged(slice);
emit changed(changeSet);
updateDerivativeData();
}
void QPieSeries::sliceClicked()
{
QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
Q_ASSERT(m_slices.contains(slice));
emit clicked(slice);
}
void QPieSeries::sliceHoverEnter()
{
QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
Q_ASSERT(m_slices.contains(slice));
emit hoverEnter(slice);
}
void QPieSeries::sliceHoverLeave()
Jani Honkonen
Refactoring piechart API (and internals)
 r174 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
Q_ASSERT(m_slices.contains(slice));
emit hoverLeave(slice);
}
Jani Honkonen
Refactoring piechart API (and internals)
 r174 void QPieSeries::updateDerivativeData()
{
m_total = 0;
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 // nothing to do?
if (m_slices.count() == 0)
return;
// calculate total
foreach (QPieSlice* s, m_slices)
m_total += s->value();
// we must have some values
Jani Honkonen
Add drilldown example for piechart
 r406 if (m_total == 0) {
qDebug() << "QPieSeries::updateDerivativeData() total == 0";
Q_ASSERT(m_total > 0); // TODO: is this the correct way to handle this?
}
Jani Honkonen
Refactoring piechart API (and internals)
 r174
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 // update slice attributes
qreal sliceAngle = m_pieStartAngle;
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 qreal pieSpan = m_pieEndAngle - m_pieStartAngle;
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 foreach (QPieSlice* s, m_slices) {
bool changed = false;
qreal percentage = s->value() / m_total;
if (s->m_percentage != percentage) {
s->m_percentage = percentage;
changed = true;
}
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 qreal sliceSpan = pieSpan * percentage;
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 if (s->m_angleSpan != sliceSpan) {
s->m_angleSpan = sliceSpan;
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 changed = true;
}
Jani Honkonen
QPieSlice: angle() -> startAngle(), angleSpan() -> endAngle()
 r355 if (s->m_startAngle != sliceAngle) {
s->m_startAngle = sliceAngle;
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 changed = true;
}
sliceAngle += sliceSpan;
if (changed)
emit s->changed();
}
Jani Honkonen
Refactoring piechart API (and internals)
 r174 }
Jani Honkonen
Pie chart refactoring
 r142 #include "moc_qpieseries.cpp"
QTCOMMERCIALCHART_END_NAMESPACE