##// 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:

r2498:e824058bc192
r2542:189023d9a551
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qchart.h
169 lines | 5.3 KiB | text/x-c | CLexer
/****************************************************************************
**
** 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
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QCHART_H
#define QCHART_H
#include <QAbstractSeries>
#include <QLegend>
#include <QGraphicsWidget>
#include <QMargins>
class QGraphicsSceneResizeEvent;
QTCOMMERCIALCHART_BEGIN_NAMESPACE
class QAbstractSeries;
class QAbstractAxis;
class QLegend;
class QChartPrivate;
class QTCOMMERCIALCHART_EXPORT QChart : public QGraphicsWidget
{
Q_OBJECT
Q_PROPERTY(QChart::ChartTheme theme READ theme WRITE setTheme)
Q_PROPERTY(QString title READ title WRITE setTitle)
Q_PROPERTY(bool backgroundVisible READ isBackgroundVisible WRITE setBackgroundVisible)
Q_PROPERTY(bool dropShadowEnabled READ isDropShadowEnabled WRITE setDropShadowEnabled)
Q_PROPERTY(QChart::AnimationOptions animationOptions READ animationOptions WRITE setAnimationOptions)
Q_PROPERTY(QMargins minimumMargins READ minimumMargins WRITE setMinimumMargins)
Q_PROPERTY(QMargins margins READ margins WRITE setMargins)
Q_PROPERTY(QChart::ChartType chartType READ chartType)
Q_PROPERTY(bool plotAreaBackgroundVisible READ isPlotAreaBackgroundVisible WRITE setPlotAreaBackgroundVisible)
Q_ENUMS(ChartTheme)
Q_ENUMS(AnimationOption)
Q_ENUMS(ChartType)
public:
enum ChartType {
ChartTypeUndefined = 0,
ChartTypeCartesian,
ChartTypePolar
};
enum ChartTheme {
ChartThemeLight = 0,
ChartThemeBlueCerulean,
ChartThemeDark,
ChartThemeBrownSand,
ChartThemeBlueNcs,
ChartThemeHighContrast,
ChartThemeBlueIcy
};
enum AnimationOption {
NoAnimation = 0x0,
GridAxisAnimations = 0x1,
SeriesAnimations = 0x2,
AllAnimations = 0x3
};
Q_DECLARE_FLAGS(AnimationOptions, AnimationOption)
public:
explicit QChart(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0);
~QChart();
void addSeries(QAbstractSeries *series);
void removeSeries(QAbstractSeries *series);
void removeAllSeries();
QList<QAbstractSeries *> series() const;
// *** deprecated ***
void setAxisX(QAbstractAxis *axis, QAbstractSeries *series = 0);
void setAxisY(QAbstractAxis *axis, QAbstractSeries *series = 0);
QAbstractAxis *axisX(QAbstractSeries *series = 0) const;
QAbstractAxis *axisY(QAbstractSeries *series = 0) const;
// ******************
void addAxis(QAbstractAxis *axis, Qt::Alignment alignment);
void removeAxis(QAbstractAxis *axis);
QList<QAbstractAxis*> axes(Qt::Orientations orientation = Qt::Horizontal|Qt::Vertical, QAbstractSeries *series = 0) const;
void createDefaultAxes();
void setTheme(QChart::ChartTheme theme);
QChart::ChartTheme theme() const;
void setTitle(const QString &title);
QString title() const;
void setTitleFont(const QFont &font);
QFont titleFont() const;
void setTitleBrush(const QBrush &brush);
QBrush titleBrush() const;
void setBackgroundBrush(const QBrush &brush);
QBrush backgroundBrush() const;
void setBackgroundPen(const QPen &pen);
QPen backgroundPen() const;
void setBackgroundVisible(bool visible = true);
bool isBackgroundVisible() const;
void setDropShadowEnabled(bool enabled = true);
bool isDropShadowEnabled() const;
void setAnimationOptions(AnimationOptions options);
AnimationOptions animationOptions() const;
void zoomIn();
void zoomOut();
void zoomIn(const QRectF &rect);
void zoom(qreal factor);
void scroll(qreal dx, qreal dy);
QLegend *legend() const;
void setMinimumMargins(const QMargins& margins);
QMargins minimumMargins() const;
void setMargins(const QMargins &margins);
QMargins margins() const;
QRectF plotArea() const;
void setPlotAreaBackgroundBrush(const QBrush &brush);
QBrush plotAreaBackgroundBrush() const;
void setPlotAreaBackgroundPen(const QPen &pen);
QPen plotAreaBackgroundPen() const;
void setPlotAreaBackgroundVisible(bool visible = true);
bool isPlotAreaBackgroundVisible() const;
QPointF mapToValue(const QPointF &position, QAbstractSeries *series = 0);
QPointF mapToPosition(const QPointF &value, QAbstractSeries *series = 0);
ChartType chartType() const;
protected:
explicit QChart(QChart::ChartType type, QGraphicsItem *parent, Qt::WindowFlags wFlags);
QScopedPointer<QChartPrivate> d_ptr;
friend class QLegend;
friend class DeclarativeChart;
friend class ChartDataSet;
friend class ChartPresenter;
friend class ChartThemeManager;
friend class QAbstractSeries;
Q_DISABLE_COPY(QChart)
};
QTCOMMERCIALCHART_END_NAMESPACE
Q_DECLARE_OPERATORS_FOR_FLAGS(QTCOMMERCIALCHART_NAMESPACE::QChart::AnimationOptions)
#endif // QCHART_H