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Updated barchart documentation
Updated barchart documentation
Jani Honkonen - - Load All Authors

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pieslice.cpp
135 lines | 3.3 KiB | text/x-c | CppLexer
/ src / piechart / pieslice.cpp
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Tero Ahola
Integrated draft version of pie series
 r51 #include "pieslice.h"
Jani Honkonen
Refactoring piechart API (and internals)
 r174 #include "pieslicelabel.h"
Jani Honkonen
Moved pie stuff to own .pri file and rename stuff
 r146 #include "piepresenter.h"
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 #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"
Tero Ahola
Integrated draft version of pie series
 r51 #include <QPainter>
#include <QDebug>
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 #include <qmath.h>
Jani Honkonen
Make pie work better with chartwidgettest
 r163 #include <QGraphicsSceneEvent>
Jani Honkonen
Refactoring piechart API (and internals)
 r174 #include <QTime>
Tero Ahola
Integrated draft version of pie series
 r51
QTCOMMERCIALCHART_BEGIN_NAMESPACE
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 QPointF offset(qreal angle, qreal length)
{
qreal dx = qSin(angle*(PI/180)) * length;
qreal dy = qCos(angle*(PI/180)) * length;
return QPointF(dx, -dy);
}
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 PieSlice::PieSlice(QGraphicsItem* parent)
Jani Honkonen
Refactoring piechart API (and internals)
 r174 :QGraphicsObject(parent),
m_slicelabel(new PieSliceLabel(this)),
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 m_angle(0),
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 m_angleSpan(0),
m_isExploded(false),
m_explodeDistance(0)
Tero Ahola
Integrated draft version of pie series
 r51 {
setAcceptHoverEvents(true);
Jani Honkonen
Pie chart refactoring
 r142 setAcceptedMouseButtons(Qt::LeftButton);
Tero Ahola
Integrated draft version of pie series
 r51 }
PieSlice::~PieSlice()
{
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203
Tero Ahola
Integrated draft version of pie series
 r51 }
QRectF PieSlice::boundingRect() const
{
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 return m_path.boundingRect();
Tero Ahola
Integrated draft version of pie series
 r51 }
QPainterPath PieSlice::shape() const
{
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 return m_path;
Tero Ahola
Integrated draft version of pie series
 r51 }
Jani Honkonen
Pie chart refactoring
 r142 void PieSlice::paint(QPainter* painter, const QStyleOptionGraphicsItem* /*option*/, QWidget* /*widget*/)
Tero Ahola
Integrated draft version of pie series
 r51 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 painter->setPen(m_pen);
painter->setBrush(m_brush);
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 painter->drawPath(m_path);
Tero Ahola
Integrated draft version of pie series
 r51 }
Jani Honkonen
Refactoring piechart API (and internals)
 r174 void PieSlice::hoverEnterEvent(QGraphicsSceneHoverEvent* /*event*/)
Tero Ahola
Integrated draft version of pie series
 r51 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 emit hoverEnter();
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 }
Jani Honkonen
Make pie work better with chartwidgettest
 r163 void PieSlice::hoverLeaveEvent(QGraphicsSceneHoverEvent* /*event*/)
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 emit hoverLeave();
Tero Ahola
Integrated draft version of pie series
 r51 }
Jani Honkonen
Make pie work better with chartwidgettest
 r163 void PieSlice::mousePressEvent(QGraphicsSceneMouseEvent* /*event*/)
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 emit clicked();
}
void PieSlice::setPieRect(QRectF rect)
{
m_pieRect = rect;
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 void PieSlice::updateGeometry()
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 {
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 if (!m_pieRect.isValid() || m_pieRect.isEmpty())
return;
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 prepareGeometryChange();
Jani Honkonen
Refactoring piechart API (and internals)
 r174 // calculate center angle
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 qreal centerAngle = m_angle + (m_angleSpan/2);
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157
Jani Honkonen
Refactoring piechart API (and internals)
 r174 // adjust rect for exploding
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 QRectF rect = m_pieRect;
if (m_isExploded) {
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 qreal dx = qSin(centerAngle*(PI/180)) * m_explodeDistance;
qreal dy = -qCos(centerAngle*(PI/180)) * m_explodeDistance;
rect.translate(dx, dy);
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 }
Jani Honkonen
Refactoring piechart API (and internals)
 r174 // update slice path
// TODO: draw the shape so that it might have a hole in the center
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 QPainterPath path;
path.moveTo(rect.center());
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 path.arcTo(rect, -m_angle + 90, -m_angleSpan);
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 path.closeSubpath();
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 m_path = path;
Jani Honkonen
Refactoring piechart API (and internals)
 r174 // update label position
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 qreal radius = rect.height() / 2;
Jani Honkonen
Refactoring piechart API (and internals)
 r174 QPointF edgeCenter = rect.center() + offset(centerAngle, radius + 5);
Jani Honkonen
Implementing slice label
 r181 m_slicelabel->setArmStartPoint(edgeCenter);
m_slicelabel->setArmAngle(centerAngle);
m_slicelabel->updateGeometry();
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 m_slicelabel->update();
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 //qDebug() << "PieSlice::updateGeometry" << m_slicelabel->text() << boundingRect() << m_angle << m_span;
}
void PieSlice::updateData(const QPieSlice* sliceData)
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 // TODO: compare what has changes to avoid unneccesary geometry updates
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 m_angle = sliceData->angle();
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 m_angleSpan = sliceData->angleSpan();
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 m_isExploded = sliceData->isExploded();
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 m_explodeDistance = sliceData->explodeDistance(); // TODO: expose to public API
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 m_pen = sliceData->pen();
m_brush = sliceData->brush();
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 m_slicelabel->setVisible(sliceData->isLabelVisible());
m_slicelabel->setText(sliceData->label());
m_slicelabel->setPen(sliceData->labelPen());
m_slicelabel->setFont(sliceData->labelFont());
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 m_slicelabel->setArmLength(sliceData->labelArmLength());
Jani Honkonen
Fix issue with pie label not drawn correctly when first created
 r209
updateGeometry();
update();
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 }
Jani Honkonen
Refactoring piechart API (and internals)
 r174 #include "moc_pieslice.cpp"
Tero Ahola
Integrated draft version of pie series
 r51 QTCOMMERCIALCHART_END_NAMESPACE