chartview.cpp
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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. | ||||
** | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
#include "chartview.h" | ||||
#include <QtCharts/QScatterSeries> | ||||
#include <QtCharts/QLegendMarker> | ||||
#include <QtGui/QImage> | ||||
#include <QtGui/QPainter> | ||||
#include <QtCore/QtMath> | ||||
const float Pi = 3.14159f; | ||||
ChartView::ChartView(QWidget *parent) : | ||||
QChartView(new QChart(), parent) | ||||
{ | ||||
//![1] | ||||
QScatterSeries *series0 = new QScatterSeries(); | ||||
series0->setName("scatter1"); | ||||
series0->setMarkerShape(QScatterSeries::MarkerShapeCircle); | ||||
series0->setMarkerSize(15.0); | ||||
QScatterSeries *series1 = new QScatterSeries(); | ||||
series1->setName("scatter2"); | ||||
series1->setMarkerShape(QScatterSeries::MarkerShapeRectangle); | ||||
series1->setMarkerSize(20.0); | ||||
QScatterSeries *series2 = new QScatterSeries(); | ||||
series2->setName("scatter3"); | ||||
series2->setMarkerShape(QScatterSeries::MarkerShapeRectangle); | ||||
series2->setMarkerSize(30.0); | ||||
//![1] | ||||
//![2] | ||||
series0->append(0, 6); | ||||
series0->append(2, 4); | ||||
series0->append(3, 8); | ||||
series0->append(7, 4); | ||||
series0->append(10, 5); | ||||
*series1 << QPointF(1, 1) << QPointF(3, 3) << QPointF(7, 6) << QPointF(8, 3) << QPointF(10, 2); | ||||
*series2 << QPointF(1, 5) << QPointF(4, 6) << QPointF(6, 3) << QPointF(9, 5); | ||||
//![2] | ||||
//![3] | ||||
QPainterPath starPath; | ||||
starPath.moveTo(30, 15); | ||||
for (int i = 1; i < 5; ++i) { | ||||
starPath.lineTo(15 + 15 * qCos(0.8 * i * Pi), | ||||
15 + 15 * qSin(0.8 * i * Pi)); | ||||
} | ||||
starPath.closeSubpath(); | ||||
QImage star(30, 30, QImage::Format_ARGB32); | ||||
star.fill(Qt::transparent); | ||||
QPainter painter(&star); | ||||
painter.setRenderHint(QPainter::Antialiasing); | ||||
painter.setPen(QRgb(0xf6a625)); | ||||
painter.setBrush(painter.pen().color()); | ||||
painter.drawPath(starPath); | ||||
series2->setBrush(star); | ||||
//![3] | ||||
//![4] | ||||
setRenderHint(QPainter::Antialiasing); | ||||
chart()->addSeries(series0); | ||||
chart()->addSeries(series1); | ||||
chart()->addSeries(series2); | ||||
chart()->setTitle("Simple scatterchart example"); | ||||
chart()->createDefaultAxes(); | ||||
chart()->setDropShadowEnabled(false); | ||||
//![4] | ||||
//![5] | ||||
QList<QLegendMarker *> markers = chart()->legend()->markers(series2); | ||||
for (int i = 0; i < markers.count(); i++) | ||||
markers.at(i)->setBrush(painter.pen().color()); | ||||
//![5] | ||||
} | ||||