piesliceitem_p.h
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r0 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2016 The Qt Company Ltd. | ||||
** Contact: https://www.qt.io/licensing/ | ||||
** | ||||
** This file is part of the Qt Charts module of the Qt Toolkit. | ||||
** | ||||
** $QT_BEGIN_LICENSE:GPL$ | ||||
** 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 https://www.qt.io/terms-conditions. For further | ||||
** information use the contact form at https://www.qt.io/contact-us. | ||||
** | ||||
** GNU General Public License Usage | ||||
** Alternatively, this file may be used under the terms of the GNU | ||||
** General Public License version 3 or (at your option) any later version | ||||
** approved by the KDE Free Qt Foundation. The licenses are as published by | ||||
** the Free Software Foundation and appearing in the file LICENSE.GPL3 | ||||
** included in the packaging of this file. Please review the following | ||||
** information to ensure the GNU General Public License requirements will | ||||
** be met: https://www.gnu.org/licenses/gpl-3.0.html. | ||||
** | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
// 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 PIESLICEITEM_H | ||||
#define PIESLICEITEM_H | ||||
#include <QtCharts/QChartGlobal> | ||||
#include <private/charttheme_p.h> | ||||
#include <QtCharts/QPieSeries> | ||||
#include <private/pieslicedata_p.h> | ||||
#include <QtWidgets/QGraphicsItem> | ||||
#include <QtCore/QRectF> | ||||
#include <QtGui/QColor> | ||||
#include <QtGui/QPen> | ||||
#define PIESLICE_LABEL_GAP 5 | ||||
QT_CHARTS_BEGIN_NAMESPACE | ||||
class PieChartItem; | ||||
class PieSliceLabel; | ||||
class QPieSlice; | ||||
class PieSliceItem : public QGraphicsObject | ||||
{ | ||||
Q_OBJECT | ||||
public: | ||||
PieSliceItem(QGraphicsItem *parent = 0); | ||||
~PieSliceItem(); | ||||
// from QGraphicsItem | ||||
QRectF boundingRect() const; | ||||
QPainterPath shape() const; | ||||
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget); | ||||
void hoverEnterEvent(QGraphicsSceneHoverEvent *event); | ||||
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event); | ||||
void mousePressEvent(QGraphicsSceneMouseEvent *event); | ||||
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event); | ||||
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event); | ||||
void setLayout(const PieSliceData &sliceData); | ||||
static QPointF sliceCenter(QPointF point, qreal radius, QPieSlice *slice); | ||||
Q_SIGNALS: | ||||
void clicked(Qt::MouseButtons buttons); | ||||
void hovered(bool state); | ||||
void pressed(Qt::MouseButtons buttons); | ||||
void released(Qt::MouseButtons buttons); | ||||
void doubleClicked(Qt::MouseButtons buttons); | ||||
private: | ||||
void updateGeometry(); | ||||
QPainterPath slicePath(QPointF center, qreal radius, qreal startAngle, qreal angleSpan, qreal *centerAngle, QPointF *armStart); | ||||
QPainterPath labelArmPath(QPointF start, qreal angle, qreal length, qreal textWidth, QPointF *textStart); | ||||
private: | ||||
PieSliceData m_data; | ||||
QRectF m_boundingRect; | ||||
QPainterPath m_slicePath; | ||||
QPainterPath m_labelArmPath; | ||||
QRectF m_labelTextRect; | ||||
bool m_hovered; | ||||
QGraphicsTextItem *m_labelItem; | ||||
bool m_mousePressed; | ||||
friend class PieSliceAnimation; | ||||
}; | ||||
QT_CHARTS_END_NAMESPACE | ||||
#endif // PIESLICEITEM_H | ||||