1 files changed, 155 insertions, 0 deletions
diff --git a/src/charts/animations/xyanimation.cpp b/src/charts/animations/xyanimation.cpp
new file mode 100644
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+++ b/src/charts/animations/xyanimation.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 "xyanimation_p.h"
+#include "xychart_p.h"
+#include <QDebug>
+
+Q_DECLARE_METATYPE(QVector<QPointF>)
+
+QT_CHARTS_BEGIN_NAMESPACE
+
+XYAnimation::XYAnimation(XYChart *item)
+    : ChartAnimation(item),
+      m_type(NewAnimation),
+      m_dirty(false),
+      m_index(-1),
+      m_item(item)
+{
+    setDuration(ChartAnimationDuration);
+    setEasingCurve(QEasingCurve::OutQuart);
+}
+
+XYAnimation::~XYAnimation()
+{
+}
+
+void XYAnimation::setup(const QVector<QPointF> &oldPoints, const QVector<QPointF> &newPoints, int index)
+{
+    m_type = NewAnimation;
+
+    if (state() != QAbstractAnimation::Stopped) {
+        stop();
+        m_dirty = false;
+    }
+
+    if (!m_dirty) {
+        m_dirty = true;
+        m_oldPoints = oldPoints;
+    }
+
+    m_newPoints = newPoints;
+
+    int x = m_oldPoints.count();
+    int y = m_newPoints.count();
+    int diff = x - y;
+    int requestedDiff = oldPoints.count() - y;
+
+    // m_oldPoints can be whatever between 0 and actual points count if new animation setup
+    // interrupts a previous animation, so only do remove and add animations if both
+    // stored diff and requested diff indicate add or remove. Also ensure that index is not
+    // invalid.
+    if (diff == 1 && requestedDiff == 1 && index >= 0 && y > 0 && index <= y) {
+        //remove point
+        m_newPoints.insert(index, index > 0 ? newPoints[index - 1] : newPoints[index]);
+        m_index = index;
+        m_type = RemovePointAnimation;
+    }
+
+    if (diff == -1 && requestedDiff == -1 && index >= 0 && index <= x) {
+        //add point
+        m_oldPoints.insert(index, index > 0 ? newPoints[index - 1] : newPoints[index]);
+        m_index = index;
+        m_type = AddPointAnimation;
+    }
+
+    x = m_oldPoints.count();
+    y = m_newPoints.count();
+
+    if (x != y)
+        m_type = NewAnimation;
+    else if (m_type == NewAnimation)
+        m_type = ReplacePointAnimation;
+
+    setKeyValueAt(0.0, qVariantFromValue(m_oldPoints));
+    setKeyValueAt(1.0, qVariantFromValue(m_newPoints));
+}
+
+QVariant XYAnimation::interpolated(const QVariant &start, const QVariant &end, qreal progress) const
+{
+    QVector<QPointF> startVector = qvariant_cast<QVector<QPointF> >(start);
+    QVector<QPointF> endVector = qvariant_cast<QVector<QPointF> >(end);
+    QVector<QPointF> result;
+
+    switch (m_type) {
+
+    case ReplacePointAnimation:
+    case AddPointAnimation:
+    case RemovePointAnimation: {
+        if (startVector.count() != endVector.count())
+            break;
+
+        for (int i = 0; i < startVector.count(); i++) {
+            qreal x = startVector[i].x() + ((endVector[i].x() - startVector[i].x()) * progress);
+            qreal y = startVector[i].y() + ((endVector[i].y() - startVector[i].y()) * progress);
+            result << QPointF(x, y);
+        }
+
+    }
+    break;
+    case NewAnimation: {
+        for (int i = 0; i < endVector.count() * qBound(qreal(0), progress, qreal(1)); i++)
+            result << endVector[i];
+    }
+    break;
+    default:
+        qWarning() << "Unknown type of animation";
+        break;
+    }
+
+    return qVariantFromValue(result);
+}
+
+void XYAnimation::updateCurrentValue(const QVariant &value)
+{
+    if (state() != QAbstractAnimation::Stopped) { //workaround
+
+        QVector<QPointF> vector = qvariant_cast<QVector<QPointF> >(value);
+        m_item->setGeometryPoints(vector);
+        m_item->updateGeometry();
+        m_item->setDirty(true);
+        m_dirty = false;
+
+    }
+}
+
+void XYAnimation::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
+{
+    if (oldState == QAbstractAnimation::Running && newState == QAbstractAnimation::Stopped) {
+        if (m_item->isDirty() && m_type == RemovePointAnimation) {
+            if (!m_newPoints.isEmpty())
+                m_newPoints.remove(m_index);
+            m_item->setGeometryPoints(m_newPoints);
+        }
+    }
+}
+
+#include "moc_chartanimation_p.cpp"
+QT_CHARTS_END_NAMESPACE