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Fixed paint and mouse event issues with QLineSeries...
Fixed paint and mouse event issues with QLineSeries 1. The bounding rectangle of QLineSeries item did not take line width into account; this caused paint issues if the width is bigger than 1. 2. The width of the shape of the item was always 1. This caused problems with mouse events; onClicked was not always signaled, even if you click on top (but not in the middle of) a thick line series.

File last commit:

r1698:da7242791c36
r1791:877b494897a0
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areachartitem_p.h
103 lines | 2.6 KiB | text/x-c | CLexer
/****************************************************************************
**
** Copyright (C) 2012 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 AREACHARTITEM_H
#define AREACHARTITEM_H
#include "qchartglobal.h"
#include "linechartitem_p.h"
#include <QPen>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
class QAreaSeries;
class AreaChartItem;
class AreaChartItem : public ChartItem
{
Q_OBJECT
public:
AreaChartItem(QAreaSeries *areaSeries, ChartPresenter *presenter);
~AreaChartItem();
//from QGraphicsItem
QRectF boundingRect() const;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
QPainterPath shape() const;
LineChartItem* upperLineItem() const { return m_upper; }
LineChartItem* lowerLineItem() const { return m_lower; }
void updatePath();
protected:
void mousePressEvent(QGraphicsSceneMouseEvent *event);
Q_SIGNALS:
void clicked(const QPointF &point);
public Q_SLOTS:
void handleUpdated();
void handleDomainUpdated();
void handleGeometryChanged(const QRectF &size);
private:
QAreaSeries* m_series;
LineChartItem* m_upper;
LineChartItem* m_lower;
QPainterPath m_path;
QRectF m_rect;
QRectF m_clipRect;
QPen m_linePen;
QPen m_pointPen;
QBrush m_brush;
bool m_pointsVisible;
};
class AreaBoundItem : public LineChartItem
{
public:
AreaBoundItem(AreaChartItem *item,QLineSeries *lineSeries,ChartPresenter* presenter) : LineChartItem(lineSeries, 0), m_item(item) {
setPresenter(presenter);
}
~AreaBoundItem() {}
void updateGeometry() {
LineChartItem::updateGeometry();
m_item->updatePath();
}
private:
AreaChartItem* m_item;
};
QTCOMMERCIALCHART_END_NAMESPACE
#endif