/**
* Update the colour scale after the range changes.
*/
void ColorMapWidget::updateScale()
{
double minValue = m_minValueBox->displayText().toDouble();
double maxValue = m_maxValueBox->displayText().toDouble();
GraphOptions::ScaleType type = (GraphOptions::ScaleType)m_scaleOptions->itemData(m_scaleOptions->currentIndex()).toUInt();
if (type == GraphOptions::Linear)
{
QwtLinearScaleEngine linScaler;
m_scaleWidget->setScaleDiv(linScaler.transformation(), linScaler.divideScale(minValue, maxValue, 20, 5));
}
else if (type == GraphOptions::Power)
{
PowerScaleEngine powerScaler;
m_scaleWidget->setScaleDiv(powerScaler.transformation(), powerScaler.divideScale(minValue, maxValue, 20, 5));
}
else
{
QwtLog10ScaleEngine logScaler;
double logmin(minValue);
if (logmin <= 0.0)
{
logmin = m_minPositiveValue;
}
m_scaleWidget->setScaleDiv(logScaler.transformation(), logScaler.divideScale(logmin, maxValue, 20, 5));
}
}
/** Update the widget when the color map is changed */
void ColorBarWidget::updateColorMap()
{
// The color bar alway shows the same range. Doesn't matter since the ticks don't show up
QwtDoubleInterval range(1.0, 100.0);
m_colorBar->setColorBarEnabled(true);
m_colorBar->setColorMap( range, m_colorMap);
m_colorBar->setColorBarWidth(15);
m_colorBar->setEnabled(true);
// Try to limit the number of steps based on the height of the color bar
int maxMajorSteps = m_colorBar->height()/15; // 15 pixels per div looked about right
//std::cout << "maxMajorSteps" << maxMajorSteps << std::endl;
if (maxMajorSteps > 10) maxMajorSteps = 10;
// Show the scale on the right
double minValue = m_min;
double maxValue = m_max;
GraphOptions::ScaleType type = m_colorMap.getScaleType();
if( type == GraphOptions::Linear )
{
QwtLinearScaleEngine linScaler;
m_colorBar->setScaleDiv(linScaler.transformation(), linScaler.divideScale(minValue, maxValue, maxMajorSteps, 5));
m_colorBar->setColorMap(QwtDoubleInterval(minValue, maxValue),m_colorMap);
}
else
{
QwtLog10ScaleEngine logScaler;
m_colorBar->setScaleDiv(logScaler.transformation(), logScaler.divideScale(minValue, maxValue, maxMajorSteps, 5));
m_colorBar->setColorMap(QwtDoubleInterval(minValue, maxValue), m_colorMap);
}
}
/**
* Set up a new colour map.
* @param colorMap :: Reference to the new colour map.
*/
void ColorMapWidget::setupColorBarScaling(const MantidColorMap& colorMap)
{
double minValue = m_minValueBox->displayText().toDouble();
double maxValue = m_maxValueBox->displayText().toDouble();
GraphOptions::ScaleType type = colorMap.getScaleType();
if( type == GraphOptions::Linear )
{
QwtLinearScaleEngine linScaler;
m_scaleWidget->setScaleDiv(linScaler.transformation(), linScaler.divideScale(minValue, maxValue, 20, 5));
m_scaleWidget->setColorMap(QwtDoubleInterval(minValue, maxValue),colorMap);
}
else if( type == GraphOptions::Power )
{
PowerScaleEngine powerScaler;
m_scaleWidget->setScaleDiv(powerScaler.transformation(), powerScaler.divideScale(minValue, maxValue, 20, 5));
m_scaleWidget->setColorMap(QwtDoubleInterval(minValue, maxValue),colorMap);
}
else
{
QwtLog10ScaleEngine logScaler;
double logmin(minValue);
if( logmin <= 0.0 )
{
logmin = m_minPositiveValue;
m_minValueBox->blockSignals(true);
setMinValue(logmin);
m_minValueBox->blockSignals(false);
}
if (maxValue <= 0)
{
maxValue = 10.;
m_maxValueBox->blockSignals(true);
setMaxValue(maxValue);
m_maxValueBox->blockSignals(false);
}
m_scaleWidget->setScaleDiv(logScaler.transformation(), logScaler.divideScale(logmin, maxValue, 20, 5));
m_scaleWidget->setColorMap(QwtDoubleInterval(logmin, maxValue), colorMap);
}
m_scaleOptions->blockSignals(true);
m_scaleOptions->setCurrentIndex(m_scaleOptions->findData(type));
m_dspnN->setEnabled(false);
if (m_scaleOptions->findData(type) == 2) {
m_dspnN->setEnabled(true);
}
m_scaleOptions->blockSignals(false);
}
EigenPlotDlg::EigenPlotDlg(QWidget* parent) :
QDialog(parent),
mpPlot(NULL),
mpCurve(NULL),
mpComponentsSpin(NULL)
{
// Eigen plot
mpPlot = new QwtPlot(this);
mpPlot->installEventFilter(this);
mpPlot->setAutoFillBackground(true);
QFont ftAxis = QApplication::font();
ftAxis.setBold(true);
ftAxis.setPointSize(10);
QwtText bottomText("Number of Components");
bottomText.setFont(ftAxis);
mpPlot->setAxisTitle(QwtPlot::xBottom, bottomText);
QwtText leftText("Eigen Values");
leftText.setFont(ftAxis);
mpPlot->setAxisTitle(QwtPlot::yLeft, leftText);
QwtScaleEngine* pLinearScale = mpPlot->axisScaleEngine(QwtPlot::xBottom);
pLinearScale->setAttribute(QwtScaleEngine::Floating);
QwtLog10ScaleEngine* pLogScale = new QwtLog10ScaleEngine();
pLogScale->setAttribute(QwtScaleEngine::Floating);
mpPlot->setAxisScaleEngine(QwtPlot::yLeft, pLogScale);
QPalette plotPalette = mpPlot->palette();
plotPalette.setColor(QPalette::Window, Qt::white);
mpPlot->setPalette(plotPalette);
QwtPlotCanvas* pPlotCanvas = mpPlot->canvas();
pPlotCanvas->setFrameStyle(QFrame::NoFrame);
QwtPlotLayout* pPlotLayout = mpPlot->plotLayout();
pPlotLayout->setMargin(5);
QwtPlotGrid* pPlotGrid = new QwtPlotGrid();
pPlotGrid->setPen(QPen(Qt::DotLine));
pPlotGrid->attach(mpPlot);
mpPlot->replot();
// Number of components
QLabel* pComponentsLabel = new QLabel("Number of Components:", this);
mpComponentsSpin = new QSpinBox(this);
mpComponentsSpin->setFixedWidth(50);
mpComponentsSpin->setMinimum(1);
QLabel* pDescriptionLabel = new QLabel("To set, left click in the plot or enter a value.", this);
pDescriptionLabel->setAlignment(Qt::AlignVCenter | Qt::AlignLeft);
pDescriptionLabel->setWordWrap(true);
QFont descriptionFont(pDescriptionLabel->font());
descriptionFont.setItalic(true);
pDescriptionLabel->setFont(descriptionFont);
QHBoxLayout* pComponentsLayout = new QHBoxLayout();
pComponentsLayout->setMargin(0);
pComponentsLayout->setSpacing(5);
pComponentsLayout->addWidget(pComponentsLabel);
pComponentsLayout->addWidget(mpComponentsSpin);
pComponentsLayout->addWidget(pDescriptionLabel, 10);
// Horizontal line
QFrame* pLine = new QFrame(this);
pLine->setFrameStyle(QFrame::HLine | QFrame::Sunken);
// Buttons
QPushButton* pOk = new QPushButton("&OK", this);
QPushButton* pCancel = new QPushButton("&Cancel", this);
connect(pOk, SIGNAL(clicked()), this, SLOT(accept()));
connect(pCancel, SIGNAL(clicked()), this, SLOT(reject()));
QHBoxLayout* pButtonLayout = new QHBoxLayout();
pButtonLayout->setMargin(0);
pButtonLayout->setSpacing(5);
pButtonLayout->addStretch(10);
pButtonLayout->addWidget(pOk);
pButtonLayout->addWidget(pCancel);
// Layout
QGridLayout* pGrid = new QGridLayout(this);
pGrid->setMargin(10);
pGrid->setSpacing(10);
pGrid->addWidget(mpPlot, 0, 0);
pGrid->addLayout(pComponentsLayout, 1, 0);
pGrid->addWidget(pLine, 2, 0);
pGrid->addLayout(pButtonLayout, 3, 0);
pGrid->setRowStretch(0, 10);
// Initialization
setWindowTitle("PCA Components");
setModal(true);
resize(440, 300);
}