|
|
#include "qpieslice.h"
|
|
|
#include "qpieseries.h"
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
#define DEFAULT_PEN_COLOR Qt::black
|
|
|
#define DEFAULT_BRUSH_COLOR Qt::white
|
|
|
#define DEFAULT_LABEL_ARM_LENGTH_FACTOR 0.15
|
|
|
#define DEFAULT_EXPOLODE_DISTANCE_FACTOR 0.15
|
|
|
|
|
|
/*!
|
|
|
\class QPieSlice
|
|
|
\brief Defines a slice in pie series.
|
|
|
|
|
|
Holds all the data of a single slice in a QPieSeries and provides the means
|
|
|
to modify slice data and customize the visual appearance of the slice.
|
|
|
|
|
|
It also provides the means to customize user interaction with the slice by
|
|
|
providing signals for clicking and hover events.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QPieSlice::label
|
|
|
|
|
|
Label of the slice.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\property QPieSlice::value
|
|
|
|
|
|
Value of the slice.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
Constructs an empty slice with a \a parent.
|
|
|
|
|
|
Note that QPieSeries takes ownership of the slice when it is set/added.
|
|
|
|
|
|
\sa QPieSeries::replace(), QPieSeries::add()
|
|
|
*/
|
|
|
QPieSlice::QPieSlice(QObject *parent)
|
|
|
:QObject(parent),
|
|
|
m_value(0),
|
|
|
m_isLabelVisible(false),
|
|
|
m_isExploded(false),
|
|
|
m_explodeDistanceFactor(DEFAULT_EXPOLODE_DISTANCE_FACTOR),
|
|
|
m_percentage(0),
|
|
|
m_startAngle(0),
|
|
|
m_angleSpan(0),
|
|
|
m_slicePen(DEFAULT_PEN_COLOR),
|
|
|
m_sliceBrush(DEFAULT_BRUSH_COLOR),
|
|
|
m_labelArmPen(DEFAULT_PEN_COLOR),
|
|
|
m_labelArmLengthFactor(DEFAULT_LABEL_ARM_LENGTH_FACTOR)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Constructs an empty slice with given \a value, \a label and a \a parent.
|
|
|
Note that QPieSeries takes ownership of the slice when it is set/added.
|
|
|
\sa QPieSeries::replace(), QPieSeries::add()
|
|
|
*/
|
|
|
QPieSlice::QPieSlice(qreal value, QString label, QObject *parent)
|
|
|
:QObject(parent),
|
|
|
m_value(value),
|
|
|
m_label(label),
|
|
|
m_isLabelVisible(false),
|
|
|
m_isExploded(false),
|
|
|
m_explodeDistanceFactor(DEFAULT_EXPOLODE_DISTANCE_FACTOR),
|
|
|
m_percentage(0),
|
|
|
m_startAngle(0),
|
|
|
m_angleSpan(0),
|
|
|
m_slicePen(DEFAULT_PEN_COLOR),
|
|
|
m_sliceBrush(DEFAULT_BRUSH_COLOR),
|
|
|
m_labelArmPen(DEFAULT_PEN_COLOR),
|
|
|
m_labelArmLengthFactor(DEFAULT_LABEL_ARM_LENGTH_FACTOR)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Destroys the slice.
|
|
|
User should not delete the slice if it has been added to the series.
|
|
|
*/
|
|
|
QPieSlice::~QPieSlice()
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Gets the value of the slice.
|
|
|
Note that all values in the series
|
|
|
\sa setValue()
|
|
|
*/
|
|
|
qreal QPieSlice::value() const
|
|
|
{
|
|
|
return m_value;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Gets the label of the slice.
|
|
|
\sa setLabel()
|
|
|
*/
|
|
|
QString QPieSlice::label() const
|
|
|
{
|
|
|
return m_label;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns true if label is set as visible.
|
|
|
\sa setLabelVisible()
|
|
|
*/
|
|
|
bool QPieSlice::isLabelVisible() const
|
|
|
{
|
|
|
return m_isLabelVisible;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns true if slice is exloded from the pie.
|
|
|
\sa setExploded(), setExplodeDistanceFactor()
|
|
|
*/
|
|
|
bool QPieSlice::isExploded() const
|
|
|
{
|
|
|
return m_isExploded;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the explode distance factor.
|
|
|
|
|
|
The factor is relative to pie radius. For example:
|
|
|
1.0 means the distance is the same as the radius.
|
|
|
0.5 means the distance is half of the radius.
|
|
|
|
|
|
Default value is 0.15.
|
|
|
|
|
|
\sa setExplodeDistanceFactor()
|
|
|
*/
|
|
|
qreal QPieSlice::explodeDistanceFactor() const
|
|
|
{
|
|
|
return m_explodeDistanceFactor;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the percentage of this slice compared to all slices in the same series.
|
|
|
The returned value ranges from 0 to 1.0.
|
|
|
|
|
|
Updated internally after the slice is added to the series.
|
|
|
*/
|
|
|
qreal QPieSlice::percentage() const
|
|
|
{
|
|
|
return m_percentage;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the starting angle of this slice in the series it belongs to.
|
|
|
|
|
|
Full pie is 360 degrees where 0 degrees is at 12 a'clock.
|
|
|
|
|
|
Updated internally after the slice is added to the series.
|
|
|
*/
|
|
|
qreal QPieSlice::startAngle() const
|
|
|
{
|
|
|
return m_startAngle;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the end angle of this slice in the series it belongs to.
|
|
|
|
|
|
Full pie is 360 degrees where 0 degrees is at 12 a'clock.
|
|
|
|
|
|
Updated internally after the slice is added to the series.
|
|
|
*/
|
|
|
qreal QPieSlice::endAngle() const
|
|
|
{
|
|
|
return m_startAngle + m_angleSpan;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the pen used to draw this slice.
|
|
|
\sa setSlicePen()
|
|
|
*/
|
|
|
QPen QPieSlice::slicePen() const
|
|
|
{
|
|
|
return m_slicePen;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the brush used to draw this slice.
|
|
|
\sa setSliceBrush()
|
|
|
*/
|
|
|
QBrush QPieSlice::sliceBrush() const
|
|
|
{
|
|
|
return m_sliceBrush;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the pen used to draw label arm in this slice.
|
|
|
\sa setLabelArmPen()
|
|
|
*/
|
|
|
QPen QPieSlice::labelArmPen() const
|
|
|
{
|
|
|
return m_labelArmPen;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the font used to draw label in this slice.
|
|
|
\sa setLabelFont()
|
|
|
*/
|
|
|
QFont QPieSlice::labelFont() const
|
|
|
{
|
|
|
return m_labelFont;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Gets the label arm lenght factor.
|
|
|
|
|
|
The factor is relative to pie radius. For example:
|
|
|
1.0 means the length is the same as the radius.
|
|
|
0.5 means the length is half of the radius.
|
|
|
|
|
|
Default value is 0.15
|
|
|
|
|
|
\sa setLabelArmLengthFactor()
|
|
|
*/
|
|
|
qreal QPieSlice::labelArmLengthFactor() const
|
|
|
{
|
|
|
return m_labelArmLengthFactor;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
\fn void QPieSlice::clicked()
|
|
|
|
|
|
This signal is emitted when user has clicked the slice.
|
|
|
|
|
|
\sa QPieSeries::clicked()
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QPieSlice::hoverEnter()
|
|
|
|
|
|
This signal is emitted when user has hovered over the slice.
|
|
|
|
|
|
\sa QPieSeries::hoverEnter()
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QPieSlice::hoverLeave()
|
|
|
|
|
|
This signal is emitted when user has hovered away from the slice.
|
|
|
|
|
|
\sa QPieSeries::hoverLeave()
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QPieSlice::changed()
|
|
|
|
|
|
This signal emitted when something has changed in the slice.
|
|
|
|
|
|
\sa QPieSeries::changed()
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
Sets the \a value of this slice.
|
|
|
\sa value()
|
|
|
*/
|
|
|
void QPieSlice::setValue(qreal value)
|
|
|
{
|
|
|
if (m_value != value) {
|
|
|
m_value = value;
|
|
|
|
|
|
QPieSeries *series = qobject_cast<QPieSeries*>(parent());
|
|
|
if (series)
|
|
|
series->updateDerivativeData(); // will emit changed()
|
|
|
else
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a label of the slice.
|
|
|
\sa label()
|
|
|
*/
|
|
|
void QPieSlice::setLabel(QString label)
|
|
|
{
|
|
|
if (m_label != label) {
|
|
|
m_label = label;
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the label \a visible in this slice.
|
|
|
\sa isLabelVisible(), QPieSeries::setLabelsVisible()
|
|
|
*/
|
|
|
void QPieSlice::setLabelVisible(bool visible)
|
|
|
{
|
|
|
if (m_isLabelVisible != visible) {
|
|
|
m_isLabelVisible = visible;
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets this slice \a exploded.
|
|
|
\sa isExploded(), explodeDistanceFactor()
|
|
|
*/
|
|
|
void QPieSlice::setExploded(bool exploded)
|
|
|
{
|
|
|
if (m_isExploded != exploded) {
|
|
|
m_isExploded = exploded;
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the explode distance \a factor.
|
|
|
|
|
|
The factor is relative to pie radius. For example:
|
|
|
1.0 means the distance is the same as the radius.
|
|
|
0.5 means the distance is half of the radius.
|
|
|
|
|
|
Default value is 0.15
|
|
|
|
|
|
\sa explodeDistanceFactor()
|
|
|
*/
|
|
|
void QPieSlice::setExplodeDistanceFactor(qreal factor)
|
|
|
{
|
|
|
if (m_explodeDistanceFactor != factor) {
|
|
|
m_explodeDistanceFactor = factor;
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a pen used to draw this slice.
|
|
|
Note that applying a theme will override this.
|
|
|
\sa slicePen()
|
|
|
*/
|
|
|
void QPieSlice::setSlicePen(const QPen &pen)
|
|
|
{
|
|
|
if (m_slicePen != pen) {
|
|
|
m_slicePen = pen;
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a brush used to draw this slice.
|
|
|
Note that applying a theme will override this.
|
|
|
\sa sliceBrush()
|
|
|
*/
|
|
|
void QPieSlice::setSliceBrush(const QBrush &brush)
|
|
|
{
|
|
|
if (m_sliceBrush != brush) {
|
|
|
m_sliceBrush = brush;
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a pen used to draw the label arm in this slice.
|
|
|
Note that applying a theme will override this.
|
|
|
\sa labelArmPen()
|
|
|
*/
|
|
|
void QPieSlice::setLabelArmPen(const QPen &pen)
|
|
|
{
|
|
|
if (m_labelArmPen != pen) {
|
|
|
m_labelArmPen = pen;
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a font used to draw the label in this slice.
|
|
|
Note that applying a theme will override this.
|
|
|
\sa labelFont()
|
|
|
*/
|
|
|
void QPieSlice::setLabelFont(const QFont &font)
|
|
|
{
|
|
|
if (m_labelFont != font) {
|
|
|
m_labelFont = font;
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the label arm lenght \a factor.
|
|
|
|
|
|
The factor is relative to pie radius. For example:
|
|
|
1.0 means the length is the same as the radius.
|
|
|
0.5 means the length is half of the radius.
|
|
|
|
|
|
Default value is 0.15
|
|
|
|
|
|
\sa labelArmLengthFactor()
|
|
|
*/
|
|
|
void QPieSlice::setLabelArmLengthFactor(qreal factor)
|
|
|
{
|
|
|
if (m_labelArmLengthFactor != factor) {
|
|
|
m_labelArmLengthFactor = factor;
|
|
|
emit changed();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
#include "moc_qpieslice.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
