##// 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:

r2488:5862599d088d
r2542:189023d9a551
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declarativepieseries.h
75 lines | 2.3 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 DECLARATIVEPIESERIES_H
#define DECLARATIVEPIESERIES_H
#include "qpieseries.h"
#include "shared_defines.h"
#ifdef CHARTS_FOR_QUICK2
#include <QtQuick/QQuickItem>
#include <QtQml/QQmlParserStatus>
#else
#include <QtDeclarative/QDeclarativeItem>
#include <QtDeclarative/QDeclarativeParserStatus>
#endif
QTCOMMERCIALCHART_BEGIN_NAMESPACE
class QPieSlice;
class DeclarativePieSeries : public QPieSeries, public QDECLARATIVE_PARSER_STATUS
{
Q_OBJECT
#ifdef CHARTS_FOR_QUICK2
Q_INTERFACES(QQmlParserStatus)
Q_PROPERTY(QQmlListProperty<QObject> seriesChildren READ seriesChildren)
#else
Q_INTERFACES(QDeclarativeParserStatus)
Q_PROPERTY(QDeclarativeListProperty<QObject> seriesChildren READ seriesChildren)
#endif
Q_CLASSINFO("DefaultProperty", "seriesChildren")
public:
explicit DeclarativePieSeries(QDECLARATIVE_ITEM *parent = 0);
QDECLARATIVE_LIST_PROPERTY<QObject> seriesChildren();
Q_INVOKABLE QPieSlice *at(int index);
Q_INVOKABLE QPieSlice *find(QString label);
Q_INVOKABLE QPieSlice *append(QString label, qreal value);
Q_INVOKABLE bool remove(QPieSlice *slice);
Q_INVOKABLE void clear();
public:
void classBegin();
void componentComplete();
Q_SIGNALS:
void sliceAdded(QPieSlice *slice);
void sliceRemoved(QPieSlice *slice);
public Q_SLOTS:
static void appendSeriesChildren(QDECLARATIVE_LIST_PROPERTY<QObject> *list, QObject *element);
void handleAdded(QList<QPieSlice *> slices);
void handleRemoved(QList<QPieSlice *> slices);
};
QTCOMMERCIALCHART_END_NAMESPACE
#endif // DECLARATIVEPIESERIES_H