HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · examples/charts/callout/view.cpp

Added parametric zoom on QChart....

Added parametric zoom on QChart. Signed-off-by: jeandet <alexis.jeandet@member.fsf.org>

Miikka Heikkinen - - Load All Authors

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             view.cpp
        
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             / examples / charts / callout / view.cpp
          
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        Miikka Heikkinen
    
Updated license...

              r2854
            
      /****************************************************************************

        Titta Heikkala
    
Updated license headers...

              r2845
            
      **

        Miikka Heikkinen
    
Updated license...

              r2854
            
      ** Copyright (C) 2016 The Qt Company Ltd.

      ** Contact: https://www.qt.io/licensing/

        Titta Heikkala
    
Updated license headers...

              r2845
            
      **

        Miikka Heikkinen
    
Updated license...

              r2854
            
      ** This file is part of the Qt Charts module of the Qt Toolkit.

        Titta Heikkala
    
Updated license headers...

              r2845
            
      **

        Miikka Heikkinen
    
Updated license...

              r2854
            
      ** $QT_BEGIN_LICENSE:GPL$

        Titta Heikkala
    
Updated license headers...

              r2845
            
      ** 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

        Miikka Heikkinen
    
Updated license...

              r2854
            
      ** 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.

        Titta Heikkala
    
Updated license headers...

              r2845
            
      **

      ** $QT_END_LICENSE$

      **

        Miikka Heikkinen
    
Updated license...

              r2854
            
      ****************************************************************************/

        Marek Rosa
    
Updated callout example

              r2346
            
      #include "view.h"

        Titta Heikkala
    
Fix include syntax...

              r2714
            
      #include <QtGui/QResizeEvent>

      #include <QtWidgets/QGraphicsScene>

      #include <QtCharts/QChart>

      #include <QtCharts/QLineSeries>

      #include <QtCharts/QSplineSeries>

      #include <QtWidgets/QGraphicsTextItem>

        Marek Rosa
    
Updated callout example

              r2346
            
      #include "callout.h"

        Titta Heikkala
    
Fix include syntax...

              r2714
            
      #include <QtGui/QMouseEvent>

        Marek Rosa
    
Updated callout example

              r2346
            
      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;

        Marek Rosa
    
QChart mapping functions: return QPoint(0, 0) if series type is Pie...

              r2351
            
          m_chart->setMinimumSize(640, 480);

        Marek Rosa
    
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              r2346
            
          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)

      {

        Marek Rosa
    
QChart mapping functions: return QPoint(0, 0) if series type is Pie...

              r2351
            
          if (scene()) {

        Marek Rosa
    
Updated callout example

              r2346
            
              scene()->setSceneRect(QRect(QPoint(0, 0), event->size()));

        Marek Rosa
    
QChart mapping functions: return QPoint(0, 0) if series type is Pie...

              r2351
            
               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);

          }

        Marek Rosa
    
Updated callout example

              r2346
            
          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();

          }

      }

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Miikka Heikkinen Updated license...	r2854	/****************************************************************************
Titta Heikkala Updated license headers...	r2845	**
Miikka Heikkinen Updated license...	r2854	** Copyright (C) 2016 The Qt Company Ltd.
		** Contact: https://www.qt.io/licensing/
Titta Heikkala Updated license headers...	r2845	**
Miikka Heikkinen Updated license...	r2854	** This file is part of the Qt Charts module of the Qt Toolkit.
Titta Heikkala Updated license headers...	r2845	**
Miikka Heikkinen Updated license...	r2854	** $QT_BEGIN_LICENSE:GPL$
Titta Heikkala Updated license headers...	r2845	** 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
Miikka Heikkinen Updated license...	r2854	** 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.
Titta Heikkala Updated license headers...	r2845	**
		** $QT_END_LICENSE$
		**
Miikka Heikkinen Updated license...	r2854	****************************************************************************/
Marek Rosa Updated callout example	r2346
		#include "view.h"
Titta Heikkala Fix include syntax...	r2714	#include <QtGui/QResizeEvent>
		#include <QtWidgets/QGraphicsScene>
		#include <QtCharts/QChart>
		#include <QtCharts/QLineSeries>
		#include <QtCharts/QSplineSeries>
		#include <QtWidgets/QGraphicsTextItem>
Marek Rosa Updated callout example	r2346	#include "callout.h"
Titta Heikkala Fix include syntax...	r2714	#include <QtGui/QMouseEvent>
Marek Rosa Updated callout example	r2346
		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;
Marek Rosa QChart mapping functions: return QPoint(0, 0) if series type is Pie...	r2351	m_chart->setMinimumSize(640, 480);
Marek Rosa Updated callout example	r2346	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)
		{
Marek Rosa QChart mapping functions: return QPoint(0, 0) if series type is Pie...	r2351	if (scene()) {
Marek Rosa Updated callout example	r2346	scene()->setSceneRect(QRect(QPoint(0, 0), event->size()));
Marek Rosa QChart mapping functions: return QPoint(0, 0) if series type is Pie...	r2351	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);
		}
Marek Rosa Updated callout example	r2346	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();
		}
		}