Optimize multiple series rendering.

Cache all series instead of just the visible ones on all graphs
instead of just surface.
Changes to one series now trigger data update to only the affected
series, which should significantly improve performance in these
cases.

Task-number: QTRD-2600
Task-number: QTRD-2957

Change-Id: I6db7c689108fce8d25aace6682a193936d6f0eaf
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/src/datavisualization/engine/barseriesrendercache_p.h b/src/datavisualization/engine/barseriesrendercache_p.h
new file mode 100644
index 00000000..4e169300
--- /dev/null
+++ b/src/datavisualization/engine/barseriesrendercache_p.h
@@ -0,0 +1,61 @@
+/****************************************************************************
+**
+** 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 QtDataVisualization module.
+**
+** 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
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtDataVisualization API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef BARSERIESRENDERCACHE_P_H
+#define BARSERIESRENDERCACHE_P_H
+
+#include "datavisualizationglobal_p.h"
+#include "seriesrendercache_p.h"
+#include "qbar3dseries_p.h"
+#include "barrenderitem_p.h"
+
+QT_BEGIN_NAMESPACE_DATAVISUALIZATION
+
+class BarSeriesRenderCache : public SeriesRenderCache
+{
+public:
+    BarSeriesRenderCache(QAbstract3DSeries *series, Abstract3DRenderer *renderer);
+    virtual ~BarSeriesRenderCache();
+
+    void cleanup(TextureHelper *texHelper);
+
+    inline BarRenderItemArray &renderArray() { return m_renderArray; }
+    inline QBar3DSeries *series() const { return static_cast<QBar3DSeries *>(m_series); }
+    inline QVector<BarRenderSliceItem> &sliceArray() { return m_sliceArray; }
+    inline void setVisualIndex(int index) { m_visualIndex = index; }
+    inline int visualIndex() {return m_visualIndex; }
+
+protected:
+    BarRenderItemArray m_renderArray;
+    QVector<BarRenderSliceItem> m_sliceArray;
+    int m_visualIndex; // order of the series is relevant
+};
+
+QT_END_NAMESPACE_DATAVISUALIZATION
+
+#endif