##// END OF EJS Templates
Optimize polar chart radius calculation a bit....
Optimize polar chart radius calculation a bit. Current algorithm still results in an occasional extra unneeded iteration, as it uses only crude approximation for radius reduction. However, any speedup gained by accurately calculating needed reduction would be very minor compared to approximations used, so it doesn't seem worth the effort to figure out the complex math. Change-Id: If670a1b058a85cd0305b93f62e6388b463bafd0d Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

File last commit:

r2483:f494279b6366
r2542:189023d9a551
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cartesianchartaxis_p.h
79 lines | 2.3 KiB | text/x-c | CLexer
/ src / axis / cartesianchartaxis_p.h
/****************************************************************************
**
** Copyright (C) 2013 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 Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial 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
** $QT_END_LICENSE$
**
****************************************************************************/
// W A R N I N G
// -------------
//
// This file is not part of the QtCommercial Chart 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 CARTESIANCHARTAXIS_H
#define CARTESIANCHARTAXIS_H
#include "qchartglobal.h"
#include "chartaxiselement_p.h"
QTCOMMERCIALCHART_BEGIN_NAMESPACE
class QAbstractAxis;
class CartesianChartAxis : public ChartAxisElement
{
Q_OBJECT
Q_INTERFACES(QGraphicsLayoutItem)
public:
CartesianChartAxis(QAbstractAxis *axis, QGraphicsItem *item = 0, bool intervalAxis = false);
~CartesianChartAxis();
void setGeometry(const QRectF &axis, const QRectF &grid);
QRectF gridGeometry() const { return m_gridRect; }
bool isEmpty();
virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
protected:
void setGeometry(const QRectF &size) { Q_UNUSED(size);}
virtual void updateGeometry() = 0;
void updateLayout(QVector<qreal> &layout);
public Q_SLOTS:
virtual void handleArrowPenChanged(const QPen &pen);
virtual void handleGridPenChanged(const QPen &pen);
virtual void handleShadesBrushChanged(const QBrush &brush);
virtual void handleShadesPenChanged(const QPen &pen);
private:
void createItems(int count);
void deleteItems(int count);
private:
QRectF m_gridRect;
friend class AxisAnimation;
friend class LineArrowItem;
};
QTCOMMERCIALCHART_END_NAMESPACE
#endif /* CARTESIANCHARTAXIS_H */