HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · examples/zoomlinechart/chart.cpp

QCategoryAxis scrolling support added

Michal Klocek - - Load All Authors

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             chart.cpp
        
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             / examples / zoomlinechart / chart.cpp
          
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        Jani Honkonen
    
Add gestures support for zoomlinechart example...

              r1187
            
      /****************************************************************************

      **

      ** 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 "chart.h"

      #include <QGesture>

      #include <QGraphicsScene>

      #include <QGraphicsView>

      Chart::Chart(QGraphicsItem *parent, Qt::WindowFlags wFlags)

          :QChart(parent, wFlags)

      {

          // Seems that QGraphicsView (QChartView) does not grab gestures.

          // They can only be grabbed here in the QGraphicsWidget (QChart).

          grabGesture(Qt::PanGesture);

          grabGesture(Qt::PinchGesture);

      }

      Chart::~Chart()

      {

      }

        Jani Honkonen
    
zoomlinechart example: update docs and series data

              r1388
            
      //![1]

        Jani Honkonen
    
Add gestures support for zoomlinechart example...

              r1187
            
      bool Chart::sceneEvent(QEvent *event)

      {

          if (event->type() == QEvent::Gesture)

              return gestureEvent(static_cast<QGestureEvent*>(event));

          return QChart::event(event);

      }

      bool Chart::gestureEvent(QGestureEvent* event)

      {

          if (QGesture *gesture = event->gesture(Qt::PanGesture)) {

              QPanGesture *pan = static_cast<QPanGesture *>(gesture);

        Michal Klocek
    
Changes to qchart qabstractseries API

              r1553
            
              QChart::scroll(pan->delta().x(),pan->delta().y());

        Jani Honkonen
    
Add gestures support for zoomlinechart example...

              r1187
            
          }

          if (QGesture *gesture = event->gesture(Qt::PinchGesture)) {

              QPinchGesture *pinch = static_cast<QPinchGesture *>(gesture);

              if (pinch->changeFlags() & QPinchGesture::ScaleFactorChanged)

        Jani Honkonen
    
zoomlinechart example: update docs and series data

              r1388
            
                  QChart::zoom(pinch->scaleFactor());

        Jani Honkonen
    
Add gestures support for zoomlinechart example...

              r1187
            
          }

          return true;

      }

        Jani Honkonen
    
zoomlinechart example: update docs and series data

              r1388
            
      //![1]

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Jani Honkonen Add gestures support for zoomlinechart example...	r1187	/****************************************************************************
		**
		** 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 "chart.h"
		#include <QGesture>
		#include <QGraphicsScene>
		#include <QGraphicsView>

		Chart::Chart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
		:QChart(parent, wFlags)
		{
		// Seems that QGraphicsView (QChartView) does not grab gestures.
		// They can only be grabbed here in the QGraphicsWidget (QChart).
		grabGesture(Qt::PanGesture);
		grabGesture(Qt::PinchGesture);
		}

		Chart::~Chart()
		{

		}

Jani Honkonen zoomlinechart example: update docs and series data	r1388	//![1]
Jani Honkonen Add gestures support for zoomlinechart example...	r1187	bool Chart::sceneEvent(QEvent *event)
		{
		if (event->type() == QEvent::Gesture)
		return gestureEvent(static_cast<QGestureEvent*>(event));
		return QChart::event(event);
		}

		bool Chart::gestureEvent(QGestureEvent* event)
		{
		if (QGesture *gesture = event->gesture(Qt::PanGesture)) {
		QPanGesture pan = static_cast<QPanGesture >(gesture);
Michal Klocek Changes to qchart qabstractseries API	r1553	QChart::scroll(pan->delta().x(),pan->delta().y());
Jani Honkonen Add gestures support for zoomlinechart example...	r1187	}

		if (QGesture *gesture = event->gesture(Qt::PinchGesture)) {
		QPinchGesture pinch = static_cast<QPinchGesture >(gesture);
		if (pinch->changeFlags() & QPinchGesture::ScaleFactorChanged)
Jani Honkonen zoomlinechart example: update docs and series data	r1388	QChart::zoom(pinch->scaleFactor());
Jani Honkonen Add gestures support for zoomlinechart example...	r1187	}

		return true;
		}
Jani Honkonen zoomlinechart example: update docs and series data	r1388	//![1]