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

First version of legend. Simple markers and serie names. Using drilldown as example for now.

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             qlegend.cpp
        
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        sauimone
    
framework for legend

              r524
            
      #include "qchartglobal.h"

      #include "qlegend.h"

      #include "qseries.h"

        sauimone
    
First version of legend. Simple markers and serie names. Using drilldown as example for now.

              r529
            
      #include <QPainter>

      #include <QPen>

        sauimone
    
framework for legend

              r524
            
      QTCOMMERCIALCHART_BEGIN_NAMESPACE

        sauimone
    
First version of legend. Simple markers and serie names. Using drilldown as example for now.

              r529
            
      // TODO: this to legendmarker_p.h header

      class LegendMarker : public QGraphicsItem

      {

      public:

          LegendMarker(QGraphicsItem *parent = 0) : QGraphicsItem(parent)

            ,mBoundingRect(0,0,1,1)

          {}

          void setBoundingRect(const QRectF rect) { mBoundingRect = rect; }

          void setBrush(const QBrush brush) { mBrush = brush; }

          void setName(const QString name) { mName = name; }

          QString name() const { return mName; }

          QColor color() const { return mBrush.color(); }

          void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0)

          {

              qDebug() << "LegendMarker::paint" << mBoundingRect;

              painter->setBrush(mBrush);

              painter->drawRect(mBoundingRect);

          }

          QRectF boundingRect() const { return mBoundingRect; }

      private:

          QRectF mBoundingRect;

          QBrush mBrush;

          QString mName;

      };

        sauimone
    
framework for legend

              r524
            
      QLegend::QLegend(QGraphicsItem *parent)

          : QGraphicsObject(parent)

        sauimone
    
First version of legend. Simple markers and serie names. Using drilldown as example for now.

              r529
            
          ,mBoundingRect(0,0,1,1)

        sauimone
    
framework for legend

              r524
            
      {

      }

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

      {

        sauimone
    
First version of legend. Simple markers and serie names. Using drilldown as example for now.

              r529
            
          // TODO: layout for text. using marker layout + magic for now.

          foreach(LegendMarker* m, mMarkers) {

              QRectF r = m->boundingRect();

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

              // TODO: r.y + r.height is incorrect. should be r.y. Find the bug, and remove the hack

              painter->drawText(r.x() + 20, r.y()+r.height(), m->name());

        sauimone
    
framework for legend

              r524
            
          }

      }

      QRectF QLegend::boundingRect() const

      {

          return mBoundingRect;

      }

      void QLegend::handleSeriesAdded(QSeries* series,Domain* domain)

      {

          mSeriesList.append(series);

        sauimone
    
First version of legend. Simple markers and serie names. Using drilldown as example for now.

              r529
            
          dataChanged();

          layoutChanged();

        sauimone
    
framework for legend

              r524
            
      }

      void QLegend::handleSeriesRemoved(QSeries* series)

      {

          mSeriesList.removeOne(series);

        sauimone
    
First version of legend. Simple markers and serie names. Using drilldown as example for now.

              r529
            
          dataChanged();

          layoutChanged();

      }

      void QLegend::handleGeometryChanged(const QRectF& size)

      {

          mBoundingRect = size;

          layoutChanged();

        sauimone
    
framework for legend

              r524
            
      }

        sauimone
    
First version of legend. Simple markers and serie names. Using drilldown as example for now.

              r529
            
      void QLegend::dataChanged()

      {

          foreach (QGraphicsItem* i, childItems()) {

              delete i;

          }

          mMarkers.clear();

          foreach (QSeries* s, mSeriesList) {

              for (int i=0; i<s->legendEntries().count(); i++) {

                  LegendMarker *marker = new LegendMarker(this);

                  marker->setBrush(s->legendEntries().at(i).mBrush);

                  marker->setName(s->legendEntries().at(i).mName);

                  mMarkers.append(marker);

                  childItems().append(marker);

              }

          }

      }

      void QLegend::layoutChanged()

      {

          // Calculate layout for markers and text

          if (mMarkers.count() <= 0) {

              // Nothing to do

              return;

          }

          // TODO: marker defined by series.

          QSizeF markerSize(10,10);

          // TODO: better layout, this is just concept.

          // Leave some space around markers like this: | x x x x |

          qreal steps = mMarkers.count() * 2 + 1;

          qreal yStep = mBoundingRect.height() / steps;

          qreal x = 0;

          qreal y = yStep;    // first step is empty

          foreach (LegendMarker* m, mMarkers) {

              m->setBoundingRect(QRectF(x,y,markerSize.width(),markerSize.height()));

              y += yStep*2;   // 2 steps per marker (marker and empty space)

          }

      }

        sauimone
    
framework for legend

              r524
            
      #include "moc_qlegend.cpp"

      QTCOMMERCIALCHART_END_NAMESPACE

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sauimone framework for legend	r524	#include "qchartglobal.h"
		#include "qlegend.h"
		#include "qseries.h"
sauimone First version of legend. Simple markers and serie names. Using drilldown as example for now.	r529	#include <QPainter>
		#include <QPen>
sauimone framework for legend	r524
		QTCOMMERCIALCHART_BEGIN_NAMESPACE
sauimone First version of legend. Simple markers and serie names. Using drilldown as example for now.	r529
		// TODO: this to legendmarker_p.h header
		class LegendMarker : public QGraphicsItem
		{
		public:
		LegendMarker(QGraphicsItem *parent = 0) : QGraphicsItem(parent)
		,mBoundingRect(0,0,1,1)
		{}

		void setBoundingRect(const QRectF rect) { mBoundingRect = rect; }
		void setBrush(const QBrush brush) { mBrush = brush; }
		void setName(const QString name) { mName = name; }
		QString name() const { return mName; }
		QColor color() const { return mBrush.color(); }

		void paint(QPainter painter, const QStyleOptionGraphicsItem option, QWidget *widget = 0)
		{
		qDebug() << "LegendMarker::paint" << mBoundingRect;
		painter->setBrush(mBrush);
		painter->drawRect(mBoundingRect);
		}

		QRectF boundingRect() const { return mBoundingRect; }

		private:
		QRectF mBoundingRect;
		QBrush mBrush;
		QString mName;
		};

sauimone framework for legend	r524	QLegend::QLegend(QGraphicsItem *parent)
		: QGraphicsObject(parent)
sauimone First version of legend. Simple markers and serie names. Using drilldown as example for now.	r529	,mBoundingRect(0,0,1,1)
sauimone framework for legend	r524	{
		}

		void QLegend::paint(QPainter painter, const QStyleOptionGraphicsItem option, QWidget *widget)
		{
sauimone First version of legend. Simple markers and serie names. Using drilldown as example for now.	r529	// TODO: layout for text. using marker layout + magic for now.
		foreach(LegendMarker* m, mMarkers) {
		QRectF r = m->boundingRect();
		painter->setPen(m->color());
		// TODO: r.y + r.height is incorrect. should be r.y. Find the bug, and remove the hack
		painter->drawText(r.x() + 20, r.y()+r.height(), m->name());
sauimone framework for legend	r524	}
		}

		QRectF QLegend::boundingRect() const
		{
		return mBoundingRect;
		}

		void QLegend::handleSeriesAdded(QSeries* series,Domain* domain)
		{
		mSeriesList.append(series);
sauimone First version of legend. Simple markers and serie names. Using drilldown as example for now.	r529	dataChanged();
		layoutChanged();
sauimone framework for legend	r524	}

		void QLegend::handleSeriesRemoved(QSeries* series)
		{
		mSeriesList.removeOne(series);
sauimone First version of legend. Simple markers and serie names. Using drilldown as example for now.	r529	dataChanged();
		layoutChanged();
		}

		void QLegend::handleGeometryChanged(const QRectF& size)
		{
		mBoundingRect = size;
		layoutChanged();
sauimone framework for legend	r524	}

sauimone First version of legend. Simple markers and serie names. Using drilldown as example for now.	r529	void QLegend::dataChanged()
		{
		foreach (QGraphicsItem* i, childItems()) {
		delete i;
		}

		mMarkers.clear();

		foreach (QSeries* s, mSeriesList) {
		for (int i=0; i<s->legendEntries().count(); i++) {
		LegendMarker *marker = new LegendMarker(this);
		marker->setBrush(s->legendEntries().at(i).mBrush);
		marker->setName(s->legendEntries().at(i).mName);
		mMarkers.append(marker);
		childItems().append(marker);
		}
		}
		}


		void QLegend::layoutChanged()
		{
		// Calculate layout for markers and text
		if (mMarkers.count() <= 0) {
		// Nothing to do
		return;
		}

		// TODO: marker defined by series.
		QSizeF markerSize(10,10);

		// TODO: better layout, this is just concept.
		// Leave some space around markers like this: \| x x x x \|
		qreal steps = mMarkers.count() * 2 + 1;

		qreal yStep = mBoundingRect.height() / steps;
		qreal x = 0;
		qreal y = yStep; // first step is empty
		foreach (LegendMarker* m, mMarkers) {
		m->setBoundingRect(QRectF(x,y,markerSize.width(),markerSize.height()));
		y += yStep*2; // 2 steps per marker (marker and empty space)
		}
		}


sauimone framework for legend	r524
		#include "moc_qlegend.cpp"
		QTCOMMERCIALCHART_END_NAMESPACE