HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · src/xylinechart/xylinechartitem.cpp

Refactor xyplotdata...

Refactor xyplotdata * rename xyplotdata to xyplotdomain * add proper initialization list to constructor * change xylinechartitem update interface

Michal Klocek - - Load All Authors

File last commit:

r25:9ee7e26e06fe


                r25:9ee7e26e06fe

Download file

             xylinechartitem.cpp
        
                    56 lines
            
             | 1.4 KiB
            
                | text/x-c
            
             |
                CppLexer
            
             / src / xylinechart / xylinechartitem.cpp
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      #include "xylinechartitem_p.h"

      #include "axis_p.h"

      #include "xygrid_p.h"

      #include "qxychartseries.h"

      #include <QPainter>

      #include <QStyleOptionGraphicsItem>

      #include <QDebug>

      QCHART_BEGIN_NAMESPACE

      XYLineChartItem::XYLineChartItem(QXYChartSeries* series,QGraphicsItem *parent):QGraphicsItem(parent),

      m_series(series)

      {

      }

      void XYLineChartItem::updateXYPlotData(const XYPlotDomain& data)

      {

          m_xyPlotData=data;

          if (!m_xyPlotData.m_viewportRect.isValid())

          return;

          const QRect& rect =  m_xyPlotData.m_viewportRect;

          const qreal deltaX = (rect.width()-1)/m_xyPlotData.spanX();

          const qreal deltaY = (rect.height()-1)/m_xyPlotData.spanY();

          m_polyline.clear();

          m_polyline.resize(m_series->count());

          for (int j = 0; j < m_series->count(); ++j) {

              qreal dx = m_series->x(j) - m_xyPlotData.m_minX;

              qreal dy = m_series->y(j) - m_xyPlotData.m_minY;

              qreal x = (dx * deltaX) + rect.left();

              qreal y = - (dy * deltaY) + rect.bottom();

              m_polyline[j] = QPointF(x, y);

          }

      }

      QRectF XYLineChartItem::boundingRect() const

      {

      	return m_polyline.boundingRect();

      }

      void XYLineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,QWidget *widget)

      {

          painter->setClipRect(m_xyPlotData.m_viewportRect.adjusted(+1, +1, -1, -1));

          painter->setPen(m_series->color());

          painter->drawPolyline(m_polyline);

      }

      QCHART_END_NAMESPACE

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				#include "xylinechartitem_p.h"
				#include "axis_p.h"
				#include "xygrid_p.h"
				#include "qxychartseries.h"
				#include <QPainter>
				#include <QStyleOptionGraphicsItem>
				#include <QDebug>

				QCHART_BEGIN_NAMESPACE

				XYLineChartItem::XYLineChartItem(QXYChartSeries* series,QGraphicsItem *parent):QGraphicsItem(parent),
				m_series(series)
				{

				}

				void XYLineChartItem::updateXYPlotData(const XYPlotDomain& data)
				{
				m_xyPlotData=data;

				if (!m_xyPlotData.m_viewportRect.isValid())
				return;

				const QRect& rect = m_xyPlotData.m_viewportRect;

				const qreal deltaX = (rect.width()-1)/m_xyPlotData.spanX();
				const qreal deltaY = (rect.height()-1)/m_xyPlotData.spanY();

				m_polyline.clear();
				m_polyline.resize(m_series->count());

				for (int j = 0; j < m_series->count(); ++j) {
				qreal dx = m_series->x(j) - m_xyPlotData.m_minX;
				qreal dy = m_series->y(j) - m_xyPlotData.m_minY;
				qreal x = (dx * deltaX) + rect.left();
				qreal y = - (dy * deltaY) + rect.bottom();
				m_polyline[j] = QPointF(x, y);
				}

				}

				QRectF XYLineChartItem::boundingRect() const
				{
				return m_polyline.boundingRect();
				}


				void XYLineChartItem::paint(QPainter painter, const QStyleOptionGraphicsItem option,QWidget *widget)
				{
				painter->setClipRect(m_xyPlotData.m_viewportRect.adjusted(+1, +1, -1, -1));
				painter->setPen(m_series->color());
				painter->drawPolyline(m_polyline);

				}

				QCHART_END_NAMESPACE