Added candlestick chart type

  - added QCandlestickSeries
  - added QCandlestickSet
  - added QCandlestickLegendMarker
  - added model mappers
  - added Candlestick, CandlestickChartItem, CandlestickData
  - added SeriesTypeCandlestick to SeriesType enum
  - added LegendMarkerTypeCandlestick to LegendMarkerType enum
  - added candlestick chart example
  - added QML candlestick chart example
  - added candlestick tester
  - added autotests
  - added documentation

[ChangeLog][CandlestickChart] Added new chart type:
Candlestick Chart.

Task-number: QTBUG-50544
Change-Id: I17d18dfa23e0ea209bf51ab1e349585b9cb50a8f
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

1 files changed, 116 insertions, 0 deletions

diff --git a/src/charts/animations/candlestickanimation.cpp b/src/charts/animations/candlestickanimation.cpp
new file mode 100644
index 00000000..5e141943
--- /dev/null
+++ b/src/charts/animations/candlestickanimation.cpp
@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Charts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/candlestick_p.h>
+#include <private/candlestickanimation_p.h>
+#include <private/candlestickbodywicksanimation_p.h>
+#include <private/candlestickchartitem_p.h>
+#include <private/candlestickdata_p.h>
+
+QT_CHARTS_BEGIN_NAMESPACE
+
+CandlestickAnimation::CandlestickAnimation(CandlestickChartItem *item, int duration,
+                                           QEasingCurve &curve)
+    : QObject(item),
+      m_item(item),
+      m_animationDuration(duration),
+      m_animationCurve(curve)
+{
+}
+
+CandlestickAnimation::~CandlestickAnimation()
+{
+}
+
+void CandlestickAnimation::addCandlestick(Candlestick *candlestick)
+{
+    CandlestickBodyWicksAnimation *animation = m_animations.value(candlestick, 0);
+    if (!animation) {
+        animation = new CandlestickBodyWicksAnimation(candlestick, this, m_animationDuration,
+                                                      m_animationCurve);
+        m_animations.insert(candlestick, animation);
+
+        qreal median = (candlestick->m_data.m_open + candlestick->m_data.m_close) / 2;
+        CandlestickData start;
+        start.m_open = median;
+        start.m_high = median;
+        start.m_low = median;
+        start.m_close = median;
+        animation->setup(start, candlestick->m_data);
+    } else {
+        animation->stop();
+        animation->setEndData(candlestick->m_data);
+    }
+}
+
+ChartAnimation *CandlestickAnimation::candlestickAnimation(Candlestick *candlestick)
+{
+    CandlestickBodyWicksAnimation *animation = m_animations.value(candlestick, 0);
+    if (animation)
+        animation->m_changeAnimation = false;
+
+    return animation;
+}
+
+ChartAnimation *CandlestickAnimation::candlestickChangeAnimation(Candlestick *candlestick)
+{
+    CandlestickBodyWicksAnimation *animation = m_animations.value(candlestick, 0);
+    if (animation) {
+        animation->m_changeAnimation = true;
+        animation->setEndData(candlestick->m_data);
+    }
+
+    return animation;
+}
+
+void CandlestickAnimation::setAnimationStart(Candlestick *candlestick)
+{
+    CandlestickBodyWicksAnimation *animation = m_animations.value(candlestick, 0);
+    if (animation)
+        animation->setStartData(candlestick->m_data);
+}
+
+void CandlestickAnimation::stopAll()
+{
+    foreach (Candlestick *candlestick, m_animations.keys()) {
+        CandlestickBodyWicksAnimation *animation = m_animations.value(candlestick, 0);
+        if (animation)
+            animation->stopAndDestroyLater();
+        m_animations.remove(candlestick);
+    }
+}
+
+void CandlestickAnimation::removeCandlestickAnimation(Candlestick *candlestick)
+{
+    m_animations.remove(candlestick);
+}
+
+#include "moc_candlestickanimation_p.cpp"
+
+QT_CHARTS_END_NAMESPACE