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/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt Charts module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 or (at your option) any later version
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** approved by the KDE Free Qt Foundation. The licenses are as published by
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** the Free Software Foundation and appearing in the file LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt Chart API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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#ifndef AREACHARTITEM_H
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#define AREACHARTITEM_H
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#include <QtCharts/QChartGlobal>
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#include <private/linechartitem_p.h>
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#include <QtCharts/QAreaSeries>
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#include <QtGui/QPen>
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QT_CHARTS_BEGIN_NAMESPACE
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class AreaChartItem;
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class AreaChartItem : public ChartItem
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{
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Q_OBJECT
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public:
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AreaChartItem(QAreaSeries *areaSeries, QGraphicsItem* item = 0);
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~AreaChartItem();
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//from QGraphicsItem
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QRectF boundingRect() const;
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
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QPainterPath shape() const;
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LineChartItem *upperLineItem() const { return m_upper; }
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LineChartItem *lowerLineItem() const { return m_lower; }
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void updatePath();
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void setPresenter(ChartPresenter *presenter);
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QAreaSeries *series() const { return m_series; }
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protected:
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void mousePressEvent(QGraphicsSceneMouseEvent *event);
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void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
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void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
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void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
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void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
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Q_SIGNALS:
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void clicked(const QPointF &point);
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void hovered(const QPointF &point, bool state);
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void pressed(const QPointF &point);
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void released(const QPointF &point);
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void doubleClicked(const QPointF &point);
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public Q_SLOTS:
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void handleUpdated();
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void handleDomainUpdated();
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private:
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QAreaSeries *m_series;
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LineChartItem *m_upper;
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LineChartItem *m_lower;
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QPainterPath m_path;
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QRectF m_rect;
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QPen m_linePen;
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QPen m_pointPen;
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QBrush m_brush;
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bool m_pointsVisible;
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bool m_pointLabelsVisible;
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QString m_pointLabelsFormat;
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QFont m_pointLabelsFont;
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QColor m_pointLabelsColor;
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bool m_pointLabelsClipping;
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QPointF m_lastMousePos;
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bool m_mousePressed;
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};
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class AreaBoundItem : public LineChartItem
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{
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public:
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AreaBoundItem(AreaChartItem *area, QLineSeries *lineSeries,QGraphicsItem* item = 0)
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: LineChartItem(lineSeries, item), m_item(area)
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{
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// We do not actually want to draw anything from LineChartItem.
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// Drawing is done in AreaChartItem only.
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setVisible(false);
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}
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~AreaBoundItem() {}
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void updateGeometry()
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{
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// Make sure the series is in a chart before trying to update
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if (m_item->series()->chart()) {
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// Turn off points drawing from component line chart item, as that
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// messes up the fill for area series.
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suppressPoints();
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// Component lineseries are not necessarily themselves on the chart,
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// so get the chart type for them from area chart.
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forceChartType(m_item->series()->chart()->chartType());
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LineChartItem::updateGeometry();
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m_item->updatePath();
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}
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}
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private:
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AreaChartItem *m_item;
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};
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QT_CHARTS_END_NAMESPACE
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#endif
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