##// END OF EJS Templates
Clear chart image to transparent when necessary....
Clear chart image to transparent when necessary. If there is any transparency in the background, image clear should be done every time chart is rendered to avoid artifacts from previous render. Background shape change also triggers the clear, but that is needed only once. Change-Id: If0a762d2e2e01cf3a94a5d2f6845613deb619bdd Reviewed-by: Titta Heikkala <titta.heikkala@theqtcompany.com>

File last commit:

r2845:ae12522d475c
r2850:57e4c71e5532
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pieslicedata_p.h
142 lines | 3.8 KiB | text/x-c | CLexer
/******************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Charts module.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
******************************************************************************/
// W A R N I N G
// -------------
//
// This file is not part of the Qt 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 PIESLICEDATA_P_H
#define PIESLICEDATA_P_H
#include <QtCharts/QChartGlobal>
#include <QtCharts/QPieSlice>
#include <QtGui/QPen>
#include <QtGui/QBrush>
QT_CHARTS_BEGIN_NAMESPACE
template <class T>
class Themed : public T
{
public:
Themed(): m_isThemed(true) {}
inline T &operator=(const T &other) { return T::operator =(other); }
inline bool operator!=(const T &other) const { return T::operator !=(other); }
inline bool operator!=(const Themed &other) const
{
if (T::operator !=(other))
return true;
if (m_isThemed != other.m_isThemed)
return true;
return false;
}
inline void setThemed(bool state) { m_isThemed = state; }
inline bool isThemed() const { return m_isThemed; }
private:
bool m_isThemed;
};
class PieSliceData
{
public:
PieSliceData() :
m_value(0),
m_isExploded(false),
m_explodeDistanceFactor(0.15),
m_isLabelVisible(false),
m_labelPosition(QPieSlice::LabelOutside),
m_labelArmLengthFactor(0.15),
m_percentage(0),
m_radius(0),
m_startAngle(0),
m_angleSpan(0),
m_holeRadius(0)
{
}
bool operator!=(const PieSliceData &other) const {
if (!qFuzzyIsNull(m_value - other.m_value))
return true;
if (m_slicePen != other.m_slicePen ||
m_sliceBrush != other.m_sliceBrush)
return true;
if (m_isExploded != other.m_isExploded ||
!qFuzzyIsNull(m_explodeDistanceFactor - other.m_explodeDistanceFactor))
return true;
if (m_isLabelVisible != other.m_isLabelVisible ||
m_labelText != other.m_labelText ||
m_labelFont != other.m_labelFont ||
m_labelPosition != other.m_labelPosition ||
!qFuzzyIsNull(m_labelArmLengthFactor - other.m_labelArmLengthFactor) ||
m_labelBrush != other.m_labelBrush)
return true;
if (!qFuzzyIsNull(m_percentage - other.m_percentage) ||
m_center != other.m_center ||
!qFuzzyIsNull(m_radius - other.m_radius) ||
!qFuzzyIsNull(m_startAngle - other.m_startAngle) ||
!qFuzzyIsNull(m_angleSpan - other.m_angleSpan))
return true;
return false;
}
qreal m_value;
Themed<QPen> m_slicePen;
Themed<QBrush> m_sliceBrush;
bool m_isExploded;
qreal m_explodeDistanceFactor;
bool m_isLabelVisible;
QString m_labelText;
Themed<QFont> m_labelFont;
QPieSlice::LabelPosition m_labelPosition;
qreal m_labelArmLengthFactor;
Themed<QBrush> m_labelBrush;
qreal m_percentage;
QPointF m_center;
qreal m_radius;
qreal m_startAngle;
qreal m_angleSpan;
qreal m_holeRadius;
};
QT_CHARTS_END_NAMESPACE
#endif // PIESLICEDATA_P_H