HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r1670:5a9ca9e911f7

Added initial donut chart support to Pie series

Marek Rosa -

r1670:5a9ca9e911f7

parent child

Context file:

r1670:5a9ca9e911f7

src/piechart/piechartitem.cpp +1 0

                 PieSliceData &sliceData = QPieSlicePrivate::fromSlice(slice)->m_data;
                 sliceData.m_center = PieSliceItem::sliceCenter(m_pieCenter, m_pieRadius, slice);
                 sliceData.m_radius = m_pieRadius;
+                sliceData.m_donut = m_series->donut();
                 return sliceData;
             }

src/piechart/pieslicedata_p.h +2 0

                     m_radius = 0;
                     m_startAngle = 0;
                     m_angleSpan = 0;
+                    m_donut = false;
                 }
                 bool operator!=(const PieSliceData &other) const
                 qreal m_radius;
                 qreal m_startAngle;
                 qreal m_angleSpan;
+                bool m_donut;
             };
             QTCOMMERCIALCHART_END_NAMESPACE

src/piechart/piesliceitem.cpp +9 -1

                 QRectF rect(center.x()-radius, center.y()-radius, radius*2, radius*2);
                 // slice path
-                // TODO: draw the shape so that it might have a hole in the center
                 QPainterPath path;
+                if (m_data.m_donut) {
+                    qreal donutFraction = 5.0;
+                    QRectF insideRect = rect.adjusted(rect.width() / donutFraction, rect.height() / donutFraction, -rect.width() / donutFraction, -rect.height() / donutFraction);
+                    path.arcMoveTo(rect, -startAngle + 90);
+                    path.arcTo(rect, -startAngle + 90, -angleSpan);
+                    path.arcTo(insideRect, -startAngle + 90 - angleSpan, angleSpan);
+                    path.closeSubpath();
+                } else {
                     path.moveTo(rect.center());
                     path.arcTo(rect, -startAngle + 90, -angleSpan);
                     path.closeSubpath();
+                }
                 // calculate label arm start point
                 *armStart = center;

src/piechart/qpieseries.cpp +16 -1

                 return d->m_sum;
             }
+            void QPieSeries::setDonut(bool donut)
+            {
+                Q_D(QPieSeries);
+                d->m_donutChart = donut;
+                d->updateDerivativeData();
+            }
+            bool QPieSeries::donut() const
+            {
+                Q_D(const QPieSeries);
+                return d->m_donutChart;
+            }
             void QPieSeries::setHorizontalPosition(qreal relativePosition)
             {
                 Q_D(QPieSeries);
                 m_pieRelativeSize(0.7),
                 m_pieStartAngle(0),
                 m_pieEndAngle(360),
-                m_sum(0)
+                m_sum(0),
+                m_donutChart(false)
             {
             }
                     d->setPercentage(s->value() / m_sum);
                     d->setStartAngle(sliceAngle);
                     d->setAngleSpan(pieSpan * s->percentage());
+                    d->m_data.m_donut = m_donutChart;
                     sliceAngle += s->angleSpan();
                 }

src/piechart/qpieseries.h +3 0

                 qreal sum() const;
+                void setDonut(bool donut = true);
+                bool donut() const;
                 void setHorizontalPosition(qreal relativePosition);
                 qreal horizontalPosition() const;

src/piechart/qpieseries_p.h +1 0

                 qreal m_pieStartAngle;
                 qreal m_pieEndAngle;
                 qreal m_sum;
+                bool m_donutChart;
             private:
                 friend class QLegendPrivate;

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