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Documentation for bar charts
Documentation for bar charts
Jani Honkonen - - Load All Authors

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qpieseries.cpp
308 lines | 6.6 KiB | text/x-c | CppLexer
/ 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
Moved pie stuff to own .pri file and rename stuff
 r146 #include "piepresenter.h"
Jani Honkonen
Pie chart refactoring
 r142 #include "pieslice.h"
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 #include <QFontMetrics>
Jani Honkonen
Pie chart refactoring
 r142 #include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
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
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
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
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
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
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
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
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
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 QPieSeries::QPieSeries(QObject *parent) :
QChartSeries(parent),
m_sizeFactor(1.0),
m_position(PiePositionMaximized),
m_pieStartAngle(0),
m_pieSpan(360)
{
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
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 }
bool QPieSeries::setData(QList<qreal> data)
{
// TODO: remove this function
QList<QPieSlice*> slices;
Tero Ahola
Refactored chartwidgettest test data impl
 r278 foreach (qreal value, data)
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 slices << new QPieSlice(value, QString::number(value));
set(slices);
Jani Honkonen
Make pie work better with chartwidgettest
 r163 return true;
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 void QPieSeries::set(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
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
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
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
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
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 }
void QPieSeries::setSizeFactor(qreal factor)
{
Jani Honkonen
Make pie work better with chartwidgettest
 r163 if (factor < 0.0)
return;
if (m_sizeFactor != factor) {
Jani Honkonen
Pie chart refactoring
 r142 m_sizeFactor = factor;
Jani Honkonen
Make pie work better with chartwidgettest
 r163 emit sizeFactorChanged();
}
Jani Honkonen
Pie chart refactoring
 r142 }
void QPieSeries::setPosition(PiePosition position)
{
Jani Honkonen
Make pie work better with chartwidgettest
 r163 if (m_position != position) {
m_position = position;
emit positionChanged();
}
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 void QPieSeries::setSpan(qreal startAngle, qreal span)
{
if (startAngle >= 0 && startAngle < 360 &&
span > 0 && span <= 360) {
m_pieStartAngle = startAngle;
m_pieSpan = span;
updateDerivativeData();
}
}
void QPieSeries::setLabelsVisible(bool visible)
{
foreach (QPieSlice* s, m_slices)
s->setLabelVisible(visible);
}
void QPieSeries::enableClickExplodes(bool enable)
{
if (enable)
connect(this, SIGNAL(clicked(QPieSlice*)), this, SLOT(toggleExploded(QPieSlice*)));
else
disconnect(this, SLOT(toggleExploded(QPieSlice*)));
}
void QPieSeries::enableHoverHighlight(bool enable)
{
if (enable) {
connect(this, SIGNAL(hoverEnter(QPieSlice*)), this, SLOT(highlightOn(QPieSlice*)));
connect(this, SIGNAL(hoverLeave(QPieSlice*)), this, SLOT(highlightOff(QPieSlice*)));
} else {
disconnect(this, SLOT(hoverEnter(QPieSlice*)));
disconnect(this, SLOT(hoverLeave(QPieSlice*)));
}
}
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);
}
void QPieSeries::toggleExploded(QPieSlice* slice)
{
Q_ASSERT(slice);
slice->setExploded(!slice->isExploded());
}
void QPieSeries::highlightOn(QPieSlice* slice)
{
Q_ASSERT(slice);
QColor c = slice->brush().color().lighter();
slice->setBrush(c);
Jani Honkonen
Hide slice label by default
 r294 slice->setLabelVisible(true);
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 }
void QPieSeries::highlightOff(QPieSlice* slice)
{
Q_ASSERT(slice);
QColor c = slice->brush().color().darker(150);
slice->setBrush(c);
Jani Honkonen
Hide slice label by default
 r294 slice->setLabelVisible(false);
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
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 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;
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;
}
qreal sliceSpan = m_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;
}
if (s->m_angle != sliceAngle) {
s->m_angle = sliceAngle;
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