1 files changed, 128 insertions, 0 deletions
diff --git a/examples/charts/nesteddonuts/widget.cpp b/examples/charts/nesteddonuts/widget.cpp
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+++ b/examples/charts/nesteddonuts/widget.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "widget.h"
+#include <QChartView>
+#include <QChart>
+#include <QLegend>
+#include <QPieSeries>
+#include <QPieSlice>
+#include <QTime>
+#include <QGridLayout>
+#include <QTimer>
+
+QT_CHARTS_USE_NAMESPACE
+
+Widget::Widget(QWidget *parent)
+    : QWidget(parent)
+{
+    setMinimumSize(800, 600);
+    qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
+
+    //! [1]
+    QChartView *chartView = new QChartView;
+    chartView->setRenderHint(QPainter::Antialiasing);
+    QChart *chart = chartView->chart();
+    chart->legend()->setVisible(false);
+    chart->setTitle("Nested donuts demo");
+    chart->setAnimationOptions(QChart::AllAnimations);
+    //! [1]
+
+    //! [2]
+    qreal minSize = 0.1;
+    qreal maxSize = 0.9;
+    int donutCount = 5;
+    //! [2]
+
+    //! [3]
+    for (int i = 0; i < donutCount; i++) {
+        QPieSeries *donut = new QPieSeries;
+        int sliceCount =  3 + qrand() % 3;
+        for (int j = 0; j < sliceCount; j++) {
+            qreal value = 100 + qrand() % 100;
+            QPieSlice *slice = new QPieSlice(QString("%1").arg(value), value);
+            slice->setLabelVisible(true);
+            slice->setLabelColor(Qt::white);
+            slice->setLabelPosition(QPieSlice::LabelInsideTangential);
+            connect(slice, SIGNAL(hovered(bool)), this, SLOT(explodeSlice(bool)));
+            donut->append(slice);
+            donut->setHoleSize(minSize + i * (maxSize - minSize) / donutCount);
+            donut->setPieSize(minSize + (i + 1) * (maxSize - minSize) / donutCount);
+        }
+        m_donuts.append(donut);
+        chartView->chart()->addSeries(donut);
+    }
+    //! [3]
+
+    // create main layout
+    //! [4]
+    QGridLayout *mainLayout = new QGridLayout;
+    mainLayout->addWidget(chartView, 1, 1);
+    setLayout(mainLayout);
+    //! [4]
+
+    //! [5]
+    updateTimer = new QTimer(this);
+    connect(updateTimer, SIGNAL(timeout()), this, SLOT(updateRotation()));
+    updateTimer->start(1250);
+    //! [5]
+}
+
+Widget::~Widget()
+{
+
+}
+
+//! [6]
+void Widget::updateRotation()
+{
+    for (int i = 0; i < m_donuts.count(); i++) {
+        QPieSeries *donut = m_donuts.at(i);
+        qreal phaseShift =  -50 + qrand() % 100;
+        donut->setPieStartAngle(donut->pieStartAngle() + phaseShift);
+        donut->setPieEndAngle(donut->pieEndAngle() + phaseShift);
+    }
+}
+//! [6]
+
+//! [7]
+void Widget::explodeSlice(bool exploded)
+{
+    QPieSlice *slice = qobject_cast<QPieSlice *>(sender());
+    if (exploded) {
+        updateTimer->stop();
+        qreal sliceStartAngle = slice->startAngle();
+        qreal sliceEndAngle = slice->startAngle() + slice->angleSpan();
+
+        QPieSeries *donut = slice->series();
+        qreal seriesIndex = m_donuts.indexOf(donut);
+        for (int i = seriesIndex + 1; i < m_donuts.count(); i++) {
+            m_donuts.at(i)->setPieStartAngle(sliceEndAngle);
+            m_donuts.at(i)->setPieEndAngle(360 + sliceStartAngle);
+        }
+    } else {
+        for (int i = 0; i < m_donuts.count(); i++) {
+            m_donuts.at(i)->setPieStartAngle(0);
+            m_donuts.at(i)->setPieEndAngle(360);
+        }
+        updateTimer->start();
+    }
+    slice->setExploded(exploded);
+}
+//! [7]