|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include "view.h"
|
|
|
#include <QResizeEvent>
|
|
|
#include <QGraphicsScene>
|
|
|
#include <QChart>
|
|
|
#include <QLineSeries>
|
|
|
#include <QSplineSeries>
|
|
|
#include <QGraphicsTextItem>
|
|
|
#include "callout.h"
|
|
|
#include <QMouseEvent>
|
|
|
|
|
|
View::View(QWidget *parent)
|
|
|
: QGraphicsView(new QGraphicsScene, parent),
|
|
|
m_coordX(0),
|
|
|
m_coordY(0),
|
|
|
m_chart(0),
|
|
|
m_tooltip(0)
|
|
|
{
|
|
|
setDragMode(QGraphicsView::NoDrag);
|
|
|
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
|
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
|
|
|
|
// chart
|
|
|
m_chart = new QChart;
|
|
|
m_chart->setMinimumSize(640, 480);
|
|
|
m_chart->setTitle("Hover the line to show callout. Click the line to make it stay");
|
|
|
m_chart->legend()->hide();
|
|
|
QLineSeries *series = new QLineSeries;
|
|
|
series->append(1, 3);
|
|
|
series->append(4, 5);
|
|
|
series->append(5, 4.5);
|
|
|
series->append(7, 1);
|
|
|
series->append(11, 2);
|
|
|
m_chart->addSeries(series);
|
|
|
|
|
|
QSplineSeries *series2 = new QSplineSeries;
|
|
|
series2->append(1.6, 1.4);
|
|
|
series2->append(2.4, 3.5);
|
|
|
series2->append(3.7, 2.5);
|
|
|
series2->append(7, 4);
|
|
|
series2->append(10, 2);
|
|
|
m_chart->addSeries(series2);
|
|
|
|
|
|
m_chart->createDefaultAxes();
|
|
|
m_chart->setAcceptHoverEvents(true);
|
|
|
|
|
|
setRenderHint(QPainter::Antialiasing);
|
|
|
scene()->addItem(m_chart);
|
|
|
|
|
|
m_coordX = new QGraphicsSimpleTextItem(m_chart);
|
|
|
m_coordX->setPos(m_chart->size().width()/2 - 50, m_chart->size().height());
|
|
|
m_coordX->setText("X: ");
|
|
|
m_coordY = new QGraphicsSimpleTextItem(m_chart);
|
|
|
m_coordY->setPos(m_chart->size().width()/2 + 50, m_chart->size().height());
|
|
|
m_coordY->setText("Y: ");
|
|
|
|
|
|
connect(series, SIGNAL(clicked(QPointF)), this, SLOT(keepCallout()));
|
|
|
connect(series, SIGNAL(hovered(QPointF, bool)), this, SLOT(tooltip(QPointF,bool)));
|
|
|
|
|
|
connect(series2, SIGNAL(clicked(QPointF)), this, SLOT(keepCallout()));
|
|
|
connect(series2, SIGNAL(hovered(QPointF, bool)), this, SLOT(tooltip(QPointF,bool)));
|
|
|
|
|
|
this->setMouseTracking(true);
|
|
|
}
|
|
|
|
|
|
void View::resizeEvent(QResizeEvent *event)
|
|
|
{
|
|
|
if (scene()) {
|
|
|
scene()->setSceneRect(QRect(QPoint(0, 0), event->size()));
|
|
|
m_chart->resize(event->size());
|
|
|
m_coordX->setPos(m_chart->size().width()/2 - 50, m_chart->size().height() - 20);
|
|
|
m_coordY->setPos(m_chart->size().width()/2 + 50, m_chart->size().height() - 20);
|
|
|
// for (int i = 0; i < children().count(); i++)
|
|
|
// if ()
|
|
|
}
|
|
|
QGraphicsView::resizeEvent(event);
|
|
|
}
|
|
|
|
|
|
void View::mouseMoveEvent(QMouseEvent *event)
|
|
|
{
|
|
|
m_coordX->setText(QString("X: %1").arg(m_chart->mapToValue(event->pos()).x()));
|
|
|
m_coordY->setText(QString("Y: %1").arg(m_chart->mapToValue(event->pos()).y()));
|
|
|
QGraphicsView::mouseMoveEvent(event);
|
|
|
}
|
|
|
|
|
|
void View::keepCallout()
|
|
|
{
|
|
|
m_tooltip = new Callout(m_chart);
|
|
|
}
|
|
|
|
|
|
void View::tooltip(QPointF point, bool state)
|
|
|
{
|
|
|
if (m_tooltip == 0)
|
|
|
m_tooltip = new Callout(m_chart);
|
|
|
|
|
|
if (state) {
|
|
|
m_tooltip->setText(QString("X: %1 \nY: %2 ").arg(point.x()).arg(point.y()));
|
|
|
QXYSeries *series = qobject_cast<QXYSeries *>(sender());
|
|
|
m_tooltip->setAnchor(m_chart->mapToPosition(point, series));
|
|
|
m_tooltip->setPos(m_chart->mapToPosition(point, series) + QPoint(10, -50));
|
|
|
m_tooltip->setZValue(11);
|
|
|
m_tooltip->show();
|
|
|
} else {
|
|
|
m_tooltip->hide();
|
|
|
}
|
|
|
}
|
|
|
|
