1 files changed, 128 insertions, 0 deletions
diff --git a/src/charts/animations/piesliceanimation.cpp b/src/charts/animations/piesliceanimation.cpp
new file mode 100644
index 00000000..0a4503c9
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+++ b/src/charts/animations/piesliceanimation.cpp
@@ -0,0 +1,128 @@
+/****************************************************************************
+**
+** 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 "piesliceanimation_p.h"
+#include "piechartitem_p.h"
+
+Q_DECLARE_METATYPE(QT_CHARTS_NAMESPACE::PieSliceData)
+
+QT_CHARTS_BEGIN_NAMESPACE
+
+qreal linearPos(qreal start, qreal end, qreal pos)
+{
+    return start + ((end - start) * pos);
+}
+
+QPointF linearPos(QPointF start, QPointF end, qreal pos)
+{
+    qreal x = linearPos(start.x(), end.x(), pos);
+    qreal y = linearPos(start.y(), end.y(), pos);
+    return QPointF(x, y);
+}
+
+QPen linearPos(QPen start, QPen end, qreal pos)
+{
+    QColor c;
+    c.setRedF(linearPos(start.color().redF(), end.color().redF(), pos));
+    c.setGreenF(linearPos(start.color().greenF(), end.color().greenF(), pos));
+    c.setBlueF(linearPos(start.color().blueF(), end.color().blueF(), pos));
+    end.setColor(c);
+    return end;
+}
+
+QBrush linearPos(QBrush start, QBrush end, qreal pos)
+{
+    QColor c;
+    c.setRedF(linearPos(start.color().redF(), end.color().redF(), pos));
+    c.setGreenF(linearPos(start.color().greenF(), end.color().greenF(), pos));
+    c.setBlueF(linearPos(start.color().blueF(), end.color().blueF(), pos));
+    end.setColor(c);
+    return end;
+}
+
+PieSliceAnimation::PieSliceAnimation(PieSliceItem *sliceItem)
+    : ChartAnimation(sliceItem),
+      m_sliceItem(sliceItem),
+      m_currentValue(m_sliceItem->m_data)
+{
+
+}
+
+PieSliceAnimation::~PieSliceAnimation()
+{
+}
+
+void PieSliceAnimation::setValue(const PieSliceData &startValue, const PieSliceData &endValue)
+{
+    if (state() != QAbstractAnimation::Stopped)
+        stop();
+
+    m_currentValue = startValue;
+
+    setKeyValueAt(0.0, qVariantFromValue(startValue));
+    setKeyValueAt(1.0, qVariantFromValue(endValue));
+}
+
+void PieSliceAnimation::updateValue(const PieSliceData &endValue)
+{
+    if (state() != QAbstractAnimation::Stopped)
+        stop();
+
+    setKeyValueAt(0.0, qVariantFromValue(m_currentValue));
+    setKeyValueAt(1.0, qVariantFromValue(endValue));
+}
+
+PieSliceData PieSliceAnimation::currentSliceValue()
+{
+    // NOTE:
+    // We must use an internal current value because QVariantAnimation::currentValue() is updated
+    // before the animation is actually started. So if we get 2 updateValue() calls in a row the currentValue()
+    // will have the end value set from the first call and the second call will interpolate that instead of
+    // the original current value as it was before the first call.
+    return m_currentValue;
+}
+
+QVariant PieSliceAnimation::interpolated(const QVariant &start, const QVariant &end, qreal progress) const
+{
+    PieSliceData startValue = qvariant_cast<PieSliceData>(start);
+    PieSliceData endValue = qvariant_cast<PieSliceData>(end);
+
+    PieSliceData result;
+    result = endValue;
+    result.m_center = linearPos(startValue.m_center, endValue.m_center, progress);
+    result.m_radius = linearPos(startValue.m_radius, endValue.m_radius, progress);
+    result.m_startAngle = linearPos(startValue.m_startAngle, endValue.m_startAngle, progress);
+    result.m_angleSpan = linearPos(startValue.m_angleSpan, endValue.m_angleSpan, progress);
+    result.m_slicePen = linearPos(startValue.m_slicePen, endValue.m_slicePen, progress);
+    result.m_sliceBrush = linearPos(startValue.m_sliceBrush, endValue.m_sliceBrush, progress);
+    result.m_holeRadius = linearPos(startValue.m_holeRadius, endValue.m_holeRadius, progress);
+
+    return qVariantFromValue(result);
+}
+
+void PieSliceAnimation::updateCurrentValue(const QVariant &value)
+{
+    if (state() != QAbstractAnimation::Stopped) { //workaround
+        m_currentValue = qvariant_cast<PieSliceData>(value);
+        m_sliceItem->setLayout(m_currentValue);
+    }
+}
+
+QT_CHARTS_END_NAMESPACE