splinewidget.cpp
135 lines
| 3.9 KiB
| text/x-c
|
CppLexer
Jani Honkonen
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r830 | /**************************************************************************** | ||
** | ||||
** 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 | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
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r401 | #include "splinewidget.h" | ||
#include <QGridLayout> | ||||
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r431 | #include <QPushButton> | ||
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r630 | #include <QTime> | ||
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r838 | #include <QChartView> | ||
#include <QSplineSeries> | ||||
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r401 | |||
QTCOMMERCIALCHART_USE_NAMESPACE | ||||
SplineWidget::SplineWidget(QWidget *parent) | ||||
: QWidget(parent) | ||||
{ | ||||
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r457 | // qsrand(time(NULL)); | ||
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r630 | qsrand(QTime(0,0,0).secsTo(QTime::currentTime())); | ||
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r434 | //! [1] | ||
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r401 | //create QSplineSeries | ||
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r577 | series = new QSplineSeries(this); | ||
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r434 | //! [1] | ||
//! [2] | ||||
// customize the series presentation settings | ||||
QPen seriesPen(Qt::blue); | ||||
seriesPen.setWidth(3); | ||||
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r577 | // series->setPen(seriesPen); | ||
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r434 | //! [2] | ||
//! [add points to series] | ||||
//add data points to the series | ||||
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r796 | series->append(QPointF(150, 100)); | ||
series->append(QPointF(200, 130)); | ||||
series->append(QPointF(250, 120)); | ||||
series->append(QPointF(300, 140)); | ||||
series->append(QPointF(350, 160)); | ||||
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r434 | //! [add points to series] | ||
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r577 | |||
QSplineSeries* series2 = new QSplineSeries; | ||||
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r796 | series2->append(QPointF(400, 120)); | ||
series2->append(QPointF(450, 150)); | ||||
series2->append(QPointF(500, 145)); | ||||
series2->append(QPointF(550, 170)); | ||||
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r577 | |||
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r796 | // series->append(QPointF(600, 190)); | ||
// series->append(QPointF(650, 210)); | ||||
// series->append(QPointF(700, 190)); | ||||
// series->append(QPointF(750, 180)); | ||||
// series->append(QPointF(800, 170)); | ||||
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r577 | QSplineSeries* series3 = new QSplineSeries; | ||
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r796 | series3->append(QPointF(600, 190)); | ||
series3->append(QPointF(650, 210)); | ||||
series3->append(QPointF(700, 190)); | ||||
series3->append(QPointF(750, 180)); | ||||
series3->append(QPointF(800, 170)); | ||||
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r401 | |||
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r434 | //! [3] | ||
// create chart view | ||||
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r832 | QChart* chart = new QChart; | ||
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r434 | chart->addSeries(series); | ||
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r577 | chart->addSeries(series2); | ||
chart->addSeries(series3); | ||||
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r401 | |||
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r832 | chart->setTitle("Spline chart example"); | ||
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r460 | chart->axisX()->setMax(1500); | ||
chart->axisY()->setMax(500); | ||||
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r401 | |||
chart->setMinimumSize(800,600); | ||||
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r434 | //! [3] | ||
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r431 | |||
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r434 | //! [4] | ||
//add new data point button | ||||
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r431 | QPushButton* addButton = new QPushButton("Add new point"); | ||
connect(addButton, SIGNAL(clicked()), this, SLOT(addNewPoint())); | ||||
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r434 | // remove the last data point in the series | ||
QPushButton* removeButton = new QPushButton("Remove point"); | ||||
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r431 | connect(removeButton, SIGNAL(clicked()), this, SLOT(removePoint())); | ||
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r434 | //! [4] | ||
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r431 | |||
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r434 | //! [5] | ||
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r431 | //butttons layout | ||
QVBoxLayout* buttonsLayout = new QVBoxLayout; | ||||
buttonsLayout->addWidget(addButton); | ||||
buttonsLayout->addWidget(removeButton); | ||||
buttonsLayout->addStretch(); | ||||
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r401 | |||
QGridLayout* mainLayout = new QGridLayout; | ||||
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r832 | QChartView *chartView = new QChartView(chart); | ||
mainLayout->addWidget(chartView, 1, 0); | ||||
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r431 | mainLayout->addLayout(buttonsLayout, 1, 1); | ||
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r401 | setLayout(mainLayout); | ||
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r434 | //! [5] | ||
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r401 | } | ||
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r434 | //! [add point] | ||
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r431 | void SplineWidget::addNewPoint() | ||
{ | ||||
if (series->count() > 0) | ||||
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r796 | series->append(QPointF(series->x(series->count() - 1) + 40 + qrand()%40, qAbs(series->y(series->count() - 1) - 50 + qrand()%100))); | ||
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r431 | else | ||
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r796 | series->append(QPointF(50, 50 + qrand()%50)); | ||
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r431 | } | ||
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r434 | //! [add point] | ||
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r431 | |||
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r434 | //! [remove point] | ||
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r431 | void SplineWidget::removePoint() | ||
{ | ||||
if (series->count() > 0) | ||||
series->remove(QPointF(series->x(series->count() - 1), series->y(series->count() - 1))); | ||||
} | ||||
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r434 | //! [remove point] | ||
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r431 | |||
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r401 | SplineWidget::~SplineWidget() | ||
{ | ||||
} | ||||