HG_REPOSITORIES/LPP/users/hugo/ColorMapChart Files · src/charts/axis/colorbaraxis/chartcolorbaraxisy.cpp

functionnal colorbar

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             chartcolorbaraxisy.cpp
        
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             / src / charts / axis / colorbaraxis / chartcolorbaraxisy.cpp
          
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        winter
    
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      #include "chartcolorbaraxisy_p.h"

      #include <QtCharts/QAbstractAxis>

      #include <private/chartpresenter_p.h>

      //#include <QtCharts/QColorBarAxis>

      #include "colorbaraxis/qcolorbaraxis.h"

      #include <private/abstractchartlayout_p.h>

      #include <QtWidgets/QGraphicsLayout>

      #include <QtCore/QtMath>

      #include <QtCore/QDebug>

      QT_CHARTS_BEGIN_NAMESPACE

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      ChartColorBarAxisY::ChartColorBarAxisY(QColorBarAxis *axis, QPoint pos, qreal height, QLinearGradient gradient, QGraphicsItem *item)

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          : VerticalAxis(axis, item),

            m_axis(axis),

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            m_gradient(gradient),

            m_position(pos),

            m_height(height)

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      {

          QObject::connect(m_axis, SIGNAL(tickCountChanged(int)), this, SLOT(handleTickCountChanged(int)));

          QObject::connect(m_axis, SIGNAL(minorTickCountChanged(int)),

                           this, SLOT(handleMinorTickCountChanged(int)));

          QObject::connect(m_axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString)));

          createColorBar();

        winter
    
functionnal colorbar

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      }

      ChartColorBarAxisY::~ChartColorBarAxisY()

      {

      }

      QVector<qreal> ChartColorBarAxisY::calculateLayout() const

      {

          int tickCount = m_axis->tickCount();

          Q_ASSERT(tickCount >= 2);

          QVector<qreal> points;

          points.resize(tickCount);

          const QRectF &gridRect = gridGeometry();

          const qreal deltaY = gridRect.height() / (qreal(tickCount) - 1.0);

          for (int i = 0; i < tickCount; ++i)

              points[i] = qreal(i) * -deltaY + gridRect.bottom();

          return points;

      }

      void ChartColorBarAxisY::updateGeometry()

      {

          const QVector<qreal> &layout = ChartAxisElement::layout();

          if (layout.isEmpty())

              return;

          setLabels(createValueLabels(min(),max(),layout.size(),m_axis->labelFormat()));

          VerticalAxis::updateGeometry();

      }

      void ChartColorBarAxisY::handleTickCountChanged(int tick)

      {

          Q_UNUSED(tick);

          QGraphicsLayoutItem::updateGeometry();

          if (presenter()) presenter()->layout()->invalidate();

      }

      void ChartColorBarAxisY::handleMinorTickCountChanged(int tick)

      {

          Q_UNUSED(tick);

          QGraphicsLayoutItem::updateGeometry();

          if (presenter())

              presenter()->layout()->invalidate();

      }

      void ChartColorBarAxisY::handleLabelFormatChanged(const QString &format)

      {

          Q_UNUSED(format);

          QGraphicsLayoutItem::updateGeometry();

          if(presenter()) presenter()->layout()->invalidate();

      }

      QSizeF ChartColorBarAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const

      {

          Q_UNUSED(constraint)

          QSizeF sh;

          QSizeF base = VerticalAxis::sizeHint(which, constraint);

          QStringList ticksList = createValueLabels(min(),max(),m_axis->tickCount(),m_axis->labelFormat());

          qreal width = 0;

          // Height of vertical axis sizeHint indicates the maximum distance labels can extend past

          // first and last ticks. Base height is irrelevant.

          qreal height = 0;

          switch (which)

          {

          case Qt::MinimumSize: {

              QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),

                                                                     QStringLiteral("..."),

                                                                     axis()->labelsAngle());

        winter
    
improvements in execution time, colorbar ok, more work to do on axes,

              r3
            
              width = boundingRect.width() + labelPadding() + base.width() + 61.0; //TODO : hint changed 1.0 to 61.0

        winter
    
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              r2
            
              height = boundingRect.height() / 2.0;

              sh = QSizeF(width, height);

              break;

          }

          case Qt::PreferredSize: {

              qreal labelWidth = 0.0;

              qreal firstHeight = -1.0;

              foreach (const QString& s, ticksList) {

                  QRectF rect = ChartPresenter::textBoundingRect(axis()->labelsFont(), s, axis()->labelsAngle());

                  labelWidth = qMax(rect.width(), labelWidth);

                  height = rect.height();

                  if (firstHeight < 0.0)

                      firstHeight = height;

              }

        winter
    
improvements in execution time, colorbar ok, more work to do on axes,

              r3
            
              width = labelWidth + labelPadding() + base.width() + 62.0; //two pixels of tolerance //TODO : hint changed 2.0 to 62.0

        winter
    
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              height = qMax(height, firstHeight) / 2.0;

              sh = QSizeF(width, height);

              break;

          }

          default:

              break;

          }

          return sh;

      }

      void ChartColorBarAxisY::createColorBar()

      {

        winter
    
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          m_axis->setLabelsColor(QColor(0,0,255,0)); //make automatic labels disappear without changing layout (as it would be the case with setlabelVisible(false))

        winter
    
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              r2
            
        winter
    
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          //gradient

          QGradientStops stops = m_gradient.stops();

        winter
    
functionnal colorbar

              r4
            
          QLinearGradient gradient(0,m_position.y(),1,m_height);

        winter
    
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              r2
            
          foreach(QGradientStop stop, stops)

          {

              gradient.setColorAt(1-stop.first,stop.second);

          }

        winter
    
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              r3
            
          //colorbar

        winter
    
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          QRectF rect(m_position.x()+10,m_position.y(),m_height/20,m_height); //remove 10 if needed

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          QGraphicsRectItem *colorbar = new QGraphicsRectItem(rect, this);

        winter
    
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              r3
            
          colorbar->setZValue(ChartPresenter::AxisZValue);

          colorbar->setBrush(gradient);

        winter
    
functionnal colorbar

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          for(int i=0;i<m_axis->tickCount();i++)

          {

              qreal value = m_axis->max() - (i * (m_axis->max() - m_axis->min()) / (m_axis->tickCount() - 1));

              QGraphicsTextItem *label = new QGraphicsTextItem(this);

              label->setPlainText(QString::number(value));

              label->setPos((m_position.x()+10+m_height/20+1),(m_position.y()*0.85+i*(m_height/(m_axis->tickCount()-1)))); //remove 10 if needed

          }

        winter
    
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      }

      #include "moc_chartcolorbaraxisy_p.cpp"

        winter
    
functionnal colorbar

              r4
            
      QT_CHARTS_END_NAMESPACE

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winter more work on colorbar axis, stuck with qtchart mecanism	r2	#include "chartcolorbaraxisy_p.h"
		#include <QtCharts/QAbstractAxis>
		#include <private/chartpresenter_p.h>
		//#include <QtCharts/QColorBarAxis>
		#include "colorbaraxis/qcolorbaraxis.h"
		#include <private/abstractchartlayout_p.h>
		#include <QtWidgets/QGraphicsLayout>
		#include <QtCore/QtMath>
		#include <QtCore/QDebug>

		QT_CHARTS_BEGIN_NAMESPACE

winter improvements in execution time, colorbar ok, more work to do on axes,	r3	ChartColorBarAxisY::ChartColorBarAxisY(QColorBarAxis axis, QPoint pos, qreal height, QLinearGradient gradient, QGraphicsItem item)
winter more work on colorbar axis, stuck with qtchart mecanism	r2	: VerticalAxis(axis, item),
		m_axis(axis),
winter improvements in execution time, colorbar ok, more work to do on axes,	r3	m_gradient(gradient),
		m_position(pos),
		m_height(height)
winter more work on colorbar axis, stuck with qtchart mecanism	r2	{
		QObject::connect(m_axis, SIGNAL(tickCountChanged(int)), this, SLOT(handleTickCountChanged(int)));
		QObject::connect(m_axis, SIGNAL(minorTickCountChanged(int)),
		this, SLOT(handleMinorTickCountChanged(int)));
		QObject::connect(m_axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString)));

		createColorBar();
winter functionnal colorbar	r4
winter more work on colorbar axis, stuck with qtchart mecanism	r2	}

		ChartColorBarAxisY::~ChartColorBarAxisY()
		{
		}

		QVector<qreal> ChartColorBarAxisY::calculateLayout() const
		{
		int tickCount = m_axis->tickCount();

		Q_ASSERT(tickCount >= 2);

		QVector<qreal> points;
		points.resize(tickCount);

		const QRectF &gridRect = gridGeometry();

		const qreal deltaY = gridRect.height() / (qreal(tickCount) - 1.0);
		for (int i = 0; i < tickCount; ++i)
		points[i] = qreal(i) * -deltaY + gridRect.bottom();

		return points;
		}

		void ChartColorBarAxisY::updateGeometry()
		{
		const QVector<qreal> &layout = ChartAxisElement::layout();
		if (layout.isEmpty())
		return;
		setLabels(createValueLabels(min(),max(),layout.size(),m_axis->labelFormat()));
		VerticalAxis::updateGeometry();
		}

		void ChartColorBarAxisY::handleTickCountChanged(int tick)
		{
		Q_UNUSED(tick);
		QGraphicsLayoutItem::updateGeometry();
		if (presenter()) presenter()->layout()->invalidate();
		}

		void ChartColorBarAxisY::handleMinorTickCountChanged(int tick)
		{
		Q_UNUSED(tick);
		QGraphicsLayoutItem::updateGeometry();
		if (presenter())
		presenter()->layout()->invalidate();
		}

		void ChartColorBarAxisY::handleLabelFormatChanged(const QString &format)
		{
		Q_UNUSED(format);
		QGraphicsLayoutItem::updateGeometry();
		if(presenter()) presenter()->layout()->invalidate();
		}

		QSizeF ChartColorBarAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
		{
		Q_UNUSED(constraint)

		QSizeF sh;
		QSizeF base = VerticalAxis::sizeHint(which, constraint);
		QStringList ticksList = createValueLabels(min(),max(),m_axis->tickCount(),m_axis->labelFormat());
		qreal width = 0;
		// Height of vertical axis sizeHint indicates the maximum distance labels can extend past
		// first and last ticks. Base height is irrelevant.
		qreal height = 0;

		switch (which)
		{
		case Qt::MinimumSize: {
		QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),
		QStringLiteral("..."),
		axis()->labelsAngle());
winter improvements in execution time, colorbar ok, more work to do on axes,	r3	width = boundingRect.width() + labelPadding() + base.width() + 61.0; //TODO : hint changed 1.0 to 61.0
winter more work on colorbar axis, stuck with qtchart mecanism	r2	height = boundingRect.height() / 2.0;
		sh = QSizeF(width, height);
		break;
		}
		case Qt::PreferredSize: {
		qreal labelWidth = 0.0;
		qreal firstHeight = -1.0;
		foreach (const QString& s, ticksList) {
		QRectF rect = ChartPresenter::textBoundingRect(axis()->labelsFont(), s, axis()->labelsAngle());
		labelWidth = qMax(rect.width(), labelWidth);
		height = rect.height();
		if (firstHeight < 0.0)
		firstHeight = height;
		}
winter improvements in execution time, colorbar ok, more work to do on axes,	r3	width = labelWidth + labelPadding() + base.width() + 62.0; //two pixels of tolerance //TODO : hint changed 2.0 to 62.0
winter more work on colorbar axis, stuck with qtchart mecanism	r2	height = qMax(height, firstHeight) / 2.0;
		sh = QSizeF(width, height);
		break;
		}
		default:
		break;
		}
		return sh;
		}

		void ChartColorBarAxisY::createColorBar()
		{
winter functionnal colorbar	r4	m_axis->setLabelsColor(QColor(0,0,255,0)); //make automatic labels disappear without changing layout (as it would be the case with setlabelVisible(false))
winter more work on colorbar axis, stuck with qtchart mecanism	r2
winter improvements in execution time, colorbar ok, more work to do on axes,	r3	//gradient
		QGradientStops stops = m_gradient.stops();
winter functionnal colorbar	r4	QLinearGradient gradient(0,m_position.y(),1,m_height);
winter more work on colorbar axis, stuck with qtchart mecanism	r2	foreach(QGradientStop stop, stops)
		{
		gradient.setColorAt(1-stop.first,stop.second);
		}

winter improvements in execution time, colorbar ok, more work to do on axes,	r3	//colorbar
winter functionnal colorbar	r4	QRectF rect(m_position.x()+10,m_position.y(),m_height/20,m_height); //remove 10 if needed
winter more work on colorbar axis, stuck with qtchart mecanism	r2
		QGraphicsRectItem *colorbar = new QGraphicsRectItem(rect, this);
winter improvements in execution time, colorbar ok, more work to do on axes,	r3	colorbar->setZValue(ChartPresenter::AxisZValue);
		colorbar->setBrush(gradient);
winter functionnal colorbar	r4
		for(int i=0;i<m_axis->tickCount();i++)
		{
		qreal value = m_axis->max() - (i * (m_axis->max() - m_axis->min()) / (m_axis->tickCount() - 1));
		QGraphicsTextItem *label = new QGraphicsTextItem(this);
		label->setPlainText(QString::number(value));
		label->setPos((m_position.x()+10+m_height/20+1),(m_position.y()0.85+i(m_height/(m_axis->tickCount()-1)))); //remove 10 if needed
		}
winter more work on colorbar axis, stuck with qtchart mecanism	r2	}

		#include "moc_chartcolorbaraxisy_p.cpp"

winter functionnal colorbar	r4	QT_CHARTS_END_NAMESPACE