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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qpieseries.h"
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#include "qpieseries_p.h"
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#include "qpieslice.h"
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#include "qpieslice_p.h"
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#include "pieslicedata_p.h"
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#include "chartdataset_p.h"
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#include "charttheme_p.h"
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#include "chartanimator_p.h"
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#include "legendmarker_p.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\class QPieSeries
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\brief Pie series API for QtCommercial Charts
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The pie series defines a pie chart which consists of pie slices which are defined as QPieSlice objects.
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The slices can have any values as the QPieSeries will calculate its relative value to the sum of all slices.
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The actual slice size is determined by that relative value.
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Pie size and position on the chart is controlled by using relative values which range from 0.0 to 1.0
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These relate to the actual chart rectangle.
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By default the pie is defined as a full pie but it can also be a partial pie.
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This can be done by setting a starting angle and angle span to the series.
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Full pie is 360 degrees where 0 is at 12 a'clock.
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See the \l {PieChart Example} {pie chart example} to learn how to create a simple pie chart.
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\image examples_piechart.png
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*/
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/*!
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\property QPieSeries::horizontalPosition
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\brief Defines the horizontal position of the pie.
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The value is a relative value to the chart rectangle where:
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\list
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\o 0.0 is the absolute left.
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\o 1.0 is the absolute right.
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\endlist
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Default value is 0.5 (center).
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\sa verticalPosition
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*/
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/*!
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\fn void QPieSeries::horizontalPositionChanged()
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Emitted then the horizontal position of the pie has changed.
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\sa horizontalPosition
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*/
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/*!
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\property QPieSeries::verticalPosition
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\brief Defines the vertical position of the pie.
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The value is a relative value to the chart rectangle where:
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\list
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\o 0.0 is the absolute top.
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\o 1.0 is the absolute bottom.
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\endlist
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Default value is 0.5 (center).
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\sa horizontalPosition
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*/
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/*!
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\fn void QPieSeries::verticalPositionChanged()
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Emitted then the vertical position of the pie has changed.
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\sa verticalPosition
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*/
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/*!
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\property QPieSeries::size
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\brief Defines the pie size.
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The value is a relative value to the chart rectangle where:
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\list
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\o 0.0 is the minimum size (pie not drawn).
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\o 1.0 is the maximum size that can fit the chart.
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\endlist
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Default value is 0.7.
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*/
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/*!
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\fn void QPieSeries::pieSizeChanged()
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Emitted when the pie size has changed.
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\sa size
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*/
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/*!
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\property QPieSeries::startAngle
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\brief Defines the starting angle of the pie.
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Full pie is 360 degrees where 0 degrees is at 12 a'clock.
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Default is value is 0.
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*/
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/*!
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\fn void QPieSeries::pieStartAngleChanged()
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Emitted when the starting angle of the pie has changed.
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\sa startAngle
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*/
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/*!
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\property QPieSeries::endAngle
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\brief Defines the ending angle of the pie.
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Full pie is 360 degrees where 0 degrees is at 12 a'clock.
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Default is value is 360.
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*/
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/*!
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\fn void QPieSeries::pieEndAngleChanged()
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Emitted when the ending angle of the pie has changed.
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\sa endAngle
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*/
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/*!
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\property QPieSeries::count
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Number of slices in the series.
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*/
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/*!
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\fn void QPieSeries::countChanged()
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Emitted when the slice count has changed.
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\sa count
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*/
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/*!
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\property QPieSeries::sum
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Sum of all slices.
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The series keeps track of the sum of all slices it holds.
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*/
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/*!
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\fn void QPieSeries::sumChanged()
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Emitted when the sum of all slices has changed.
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\sa sum
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*/
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/*!
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\fn void QPieSeries::added(QList<QPieSlice*> slices)
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This signal is emitted when \a slices have been added to the series.
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\sa append(), insert()
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*/
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/*!
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\fn void QPieSeries::removed(QList<QPieSlice*> slices)
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This signal is emitted when \a slices have been removed from the series.
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\sa remove()
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*/
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/*!
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\fn void QPieSeries::clicked(QPieSlice* slice)
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This signal is emitted when a \a slice has been clicked.
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\sa QPieSlice::clicked()
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*/
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/*!
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\fn void QPieSeries::hovered(QPieSlice* slice, bool state)
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This signal is emitted when user has hovered over or away from the \a slice.
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\a state is true when user has hovered over the slice and false when hover has moved away from the slice.
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\sa QPieSlice::hovered()
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*/
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/*!
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Constructs a series object which is a child of \a parent.
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*/
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QPieSeries::QPieSeries(QObject *parent) :
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QAbstractSeries(*new QPieSeriesPrivate(this),parent)
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{
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}
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/*!
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Destroys the series and its slices.
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*/
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QPieSeries::~QPieSeries()
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{
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// NOTE: d_prt destroyed by QObject
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}
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/*!
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Returns QChartSeries::SeriesTypePie.
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*/
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QAbstractSeries::SeriesType QPieSeries::type() const
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{
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return QAbstractSeries::SeriesTypePie;
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}
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/*!
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Appends a single \a slice to the series.
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Slice ownership is passed to the series.
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Returns true if append was succesfull.
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*/
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bool QPieSeries::append(QPieSlice* slice)
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{
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return append(QList<QPieSlice*>() << slice);
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}
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/*!
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Appends an array of \a slices to the series.
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Slice ownership is passed to the series.
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Returns true if append was successfull.
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*/
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bool QPieSeries::append(QList<QPieSlice*> slices)
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{
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Q_D(QPieSeries);
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if (slices.count() == 0)
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return false;
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foreach (QPieSlice* s, slices) {
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if (!s || d->m_slices.contains(s))
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return false;
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if (s->series()) // already added to some series
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return false;
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}
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foreach (QPieSlice* s, slices) {
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s->setParent(this);
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QPieSlicePrivate::fromSlice(s)->m_series = this;
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d->m_slices << s;
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}
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d->updateDerivativeData();
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foreach (QPieSlice* s, slices) {
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connect(s, SIGNAL(valueChanged()), d, SLOT(sliceValueChanged()));
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connect(s, SIGNAL(clicked()), d, SLOT(sliceClicked()));
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connect(s, SIGNAL(hovered(bool)), d, SLOT(sliceHovered(bool)));
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}
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emit added(slices);
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emit countChanged();
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return true;
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}
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/*!
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Appends a single \a slice to the series and returns a reference to the series.
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Slice ownership is passed to the series.
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*/
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QPieSeries& QPieSeries::operator << (QPieSlice* slice)
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{
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append(slice);
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return *this;
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}
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/*!
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Appends a single slice to the series with give \a value and \a label.
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Slice ownership is passed to the series.
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*/
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QPieSlice* QPieSeries::append(QString label, qreal value)
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{
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QPieSlice* slice = new QPieSlice(label, value);
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append(slice);
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return slice;
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}
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/*!
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Inserts a single \a slice to the series before the slice at \a index position.
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Slice ownership is passed to the series.
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Returns true if insert was successfull.
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*/
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bool QPieSeries::insert(int index, QPieSlice* slice)
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{
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Q_D(QPieSeries);
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if (index < 0 || index > d->m_slices.count())
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return false;
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if (!slice || d->m_slices.contains(slice))
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return false;
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if (slice->series()) // already added to some series
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return false;
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slice->setParent(this);
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QPieSlicePrivate::fromSlice(slice)->m_series = this;
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d->m_slices.insert(index, slice);
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d->updateDerivativeData();
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connect(slice, SIGNAL(valueChanged()), d, SLOT(sliceValueChanged()));
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connect(slice, SIGNAL(clicked()), d, SLOT(sliceClicked()));
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connect(slice, SIGNAL(hovered(bool)), d, SLOT(sliceHovered(bool)));
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emit added(QList<QPieSlice*>() << slice);
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emit countChanged();
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return true;
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}
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/*!
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Removes a single \a slice from the series and deletes the slice.
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Do not reference the pointer after this call.
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Returns true if remove was successfull.
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*/
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bool QPieSeries::remove(QPieSlice* slice)
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{
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Q_D(QPieSeries);
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if (!d->m_slices.removeOne(slice))
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return false;
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d->updateDerivativeData();
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emit removed(QList<QPieSlice*>() << slice);
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emit countChanged();
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delete slice;
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slice = 0;
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return true;
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}
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/*!
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Clears all slices from the series.
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*/
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void QPieSeries::clear()
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{
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Q_D(QPieSeries);
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if (d->m_slices.count() == 0)
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return;
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QList<QPieSlice*> slices = d->m_slices;
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foreach (QPieSlice* s, d->m_slices) {
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d->m_slices.removeOne(s);
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delete s;
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}
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d->updateDerivativeData();
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emit removed(slices);
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emit countChanged();
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}
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/*!
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Returns a list of slices that belong to this series.
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*/
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QList<QPieSlice*> QPieSeries::slices() const
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{
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Q_D(const QPieSeries);
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return d->m_slices;
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}
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/*!
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returns the number of the slices in this series.
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*/
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int QPieSeries::count() const
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{
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Q_D(const QPieSeries);
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return d->m_slices.count();
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}
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/*!
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Returns true is the series is empty.
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*/
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bool QPieSeries::isEmpty() const
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{
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Q_D(const QPieSeries);
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return d->m_slices.isEmpty();
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}
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/*!
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Returns the sum of all slice values in this series.
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\sa QPieSlice::value(), QPieSlice::setValue(), QPieSlice::percentage()
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*/
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qreal QPieSeries::sum() const
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{
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Q_D(const QPieSeries);
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return d->m_sum;
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}
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void QPieSeries::setHorizontalPosition(qreal relativePosition)
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{
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Q_D(QPieSeries);
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if (relativePosition < 0.0)
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relativePosition = 0.0;
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if (relativePosition > 1.0)
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relativePosition = 1.0;
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if (!qFuzzyIsNull(d->m_pieRelativeHorPos - relativePosition)) {
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d->m_pieRelativeHorPos = relativePosition;
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emit horizontalPositionChanged();
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}
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}
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qreal QPieSeries::horizontalPosition() const
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{
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Q_D(const QPieSeries);
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return d->m_pieRelativeHorPos;
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}
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void QPieSeries::setVerticalPosition(qreal relativePosition)
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{
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Q_D(QPieSeries);
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if (relativePosition < 0.0)
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relativePosition = 0.0;
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if (relativePosition > 1.0)
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relativePosition = 1.0;
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if (!qFuzzyIsNull(d->m_pieRelativeVerPos - relativePosition)) {
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d->m_pieRelativeVerPos = relativePosition;
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emit verticalPositionChanged();
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}
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}
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qreal QPieSeries::verticalPosition() const
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{
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Q_D(const QPieSeries);
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return d->m_pieRelativeVerPos;
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}
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void QPieSeries::setPieSize(qreal relativeSize)
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{
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Q_D(QPieSeries);
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if (relativeSize < 0.0)
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relativeSize = 0.0;
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if (relativeSize > 1.0)
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relativeSize = 1.0;
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if (!qFuzzyIsNull(d->m_pieRelativeSize - relativeSize)) {
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d->m_pieRelativeSize = relativeSize;
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emit pieSizeChanged();
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}
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}
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qreal QPieSeries::pieSize() const
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{
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Q_D(const QPieSeries);
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return d->m_pieRelativeSize;
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}
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void QPieSeries::setPieStartAngle(qreal angle)
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{
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Q_D(QPieSeries);
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if (qFuzzyIsNull(d->m_pieStartAngle - angle))
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return;
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d->m_pieStartAngle = angle;
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d->updateDerivativeData();
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|
emit pieStartAngleChanged();
|
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|
}
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|
|
|
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|
qreal QPieSeries::pieStartAngle() const
|
|
|
{
|
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|
Q_D(const QPieSeries);
|
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|
return d->m_pieStartAngle;
|
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|
}
|
|
|
|
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|
/*!
|
|
|
Sets the end angle of the pie.
|
|
|
|
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|
Full pie is 360 degrees where 0 degrees is at 12 a'clock.
|
|
|
|
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|
\a angle must be greater than start angle.
|
|
|
|
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\sa pieEndAngle(), pieStartAngle(), setPieStartAngle()
|
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|
*/
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|
void QPieSeries::setPieEndAngle(qreal angle)
|
|
|
{
|
|
|
Q_D(QPieSeries);
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|
|
if (qFuzzyIsNull(d->m_pieEndAngle - angle))
|
|
|
return;
|
|
|
d->m_pieEndAngle = angle;
|
|
|
d->updateDerivativeData();
|
|
|
emit pieEndAngleChanged();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the end angle of the pie.
|
|
|
|
|
|
Full pie is 360 degrees where 0 degrees is at 12 a'clock.
|
|
|
|
|
|
\sa setPieEndAngle(), pieStartAngle(), setPieStartAngle()
|
|
|
*/
|
|
|
qreal QPieSeries::pieEndAngle() const
|
|
|
{
|
|
|
Q_D(const QPieSeries);
|
|
|
return d->m_pieEndAngle;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the all the slice labels \a visible or invisible.
|
|
|
|
|
|
Note that this affects only the current slices in the series.
|
|
|
If user adds a new slice the default label visibility is false.
|
|
|
|
|
|
\sa QPieSlice::isLabelVisible(), QPieSlice::setLabelVisible()
|
|
|
*/
|
|
|
void QPieSeries::setLabelsVisible(bool visible)
|
|
|
{
|
|
|
Q_D(QPieSeries);
|
|
|
foreach (QPieSlice* s, d->m_slices)
|
|
|
s->setLabelVisible(visible);
|
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
|
|
|
QPieSeriesPrivate::QPieSeriesPrivate(QPieSeries *parent) :
|
|
|
QAbstractSeriesPrivate(parent),
|
|
|
m_pieRelativeHorPos(0.5),
|
|
|
m_pieRelativeVerPos(0.5),
|
|
|
m_pieRelativeSize(0.7),
|
|
|
m_pieStartAngle(0),
|
|
|
m_pieEndAngle(360),
|
|
|
m_sum(0)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QPieSeriesPrivate::~QPieSeriesPrivate()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
void QPieSeriesPrivate::updateDerivativeData()
|
|
|
{
|
|
|
// calculate sum of all slices
|
|
|
qreal sum = 0;
|
|
|
foreach (QPieSlice* s, m_slices)
|
|
|
sum += s->value();
|
|
|
|
|
|
if (!qFuzzyIsNull(m_sum - sum)) {
|
|
|
m_sum = sum;
|
|
|
emit q_func()->sumChanged();
|
|
|
}
|
|
|
|
|
|
// nothing to show..
|
|
|
if (qFuzzyIsNull(m_sum))
|
|
|
return;
|
|
|
|
|
|
// update slice attributes
|
|
|
qreal sliceAngle = m_pieStartAngle;
|
|
|
qreal pieSpan = m_pieEndAngle - m_pieStartAngle;
|
|
|
QVector<QPieSlice*> changed;
|
|
|
foreach (QPieSlice* s, m_slices) {
|
|
|
QPieSlicePrivate *d = QPieSlicePrivate::fromSlice(s);
|
|
|
d->setPercentage(s->value() / m_sum);
|
|
|
d->setStartAngle(sliceAngle);
|
|
|
d->setAngleSpan(pieSpan * s->percentage());
|
|
|
sliceAngle += s->angleSpan();
|
|
|
}
|
|
|
|
|
|
|
|
|
emit calculatedDataChanged();
|
|
|
}
|
|
|
|
|
|
QPieSeriesPrivate* QPieSeriesPrivate::fromSeries(QPieSeries *series)
|
|
|
{
|
|
|
return series->d_func();
|
|
|
}
|
|
|
|
|
|
void QPieSeriesPrivate::sliceValueChanged()
|
|
|
{
|
|
|
Q_ASSERT(m_slices.contains(qobject_cast<QPieSlice *>(sender())));
|
|
|
updateDerivativeData();
|
|
|
}
|
|
|
|
|
|
void QPieSeriesPrivate::sliceClicked()
|
|
|
{
|
|
|
QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
|
|
|
Q_ASSERT(m_slices.contains(slice));
|
|
|
Q_Q(QPieSeries);
|
|
|
emit q->clicked(slice);
|
|
|
}
|
|
|
|
|
|
void QPieSeriesPrivate::sliceHovered(bool state)
|
|
|
{
|
|
|
QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
|
|
|
Q_ASSERT(m_slices.contains(slice));
|
|
|
Q_Q(QPieSeries);
|
|
|
emit q->hovered(slice, state);
|
|
|
}
|
|
|
|
|
|
void QPieSeriesPrivate::scaleDomain(Domain& domain)
|
|
|
{
|
|
|
Q_UNUSED(domain);
|
|
|
// does not apply to pie
|
|
|
}
|
|
|
|
|
|
Chart* QPieSeriesPrivate::createGraphics(ChartPresenter* presenter)
|
|
|
{
|
|
|
Q_Q(QPieSeries);
|
|
|
PieChartItem* pie = new PieChartItem(q,presenter);
|
|
|
if(presenter->animationOptions().testFlag(QChart::SeriesAnimations)) {
|
|
|
presenter->animator()->addAnimation(pie);
|
|
|
}
|
|
|
presenter->chartTheme()->decorate(q, presenter->dataSet()->seriesIndex(q));
|
|
|
return pie;
|
|
|
}
|
|
|
|
|
|
QList<LegendMarker*> QPieSeriesPrivate::createLegendMarker(QLegend* legend)
|
|
|
{
|
|
|
Q_Q(QPieSeries);
|
|
|
QList<LegendMarker*> markers;
|
|
|
foreach(QPieSlice* slice, q->slices()) {
|
|
|
PieLegendMarker* marker = new PieLegendMarker(q,slice,legend);
|
|
|
markers << marker;
|
|
|
}
|
|
|
return markers;
|
|
|
}
|
|
|
|
|
|
#include "moc_qpieseries.cpp"
|
|
|
#include "moc_qpieseries_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
