QxrdImageDisplayWidget Class Reference

#include <qxrdimagedisplaywidget.h>

Inheritance diagram for QxrdImageDisplayWidget:

Collaboration diagram for QxrdImageDisplayWidget:

Public Slots
void	updateImage (QcepDoubleImageDataPtr img, QcepMaskDataPtr ovflow=QcepMaskDataPtr(), QcepMaskDataPtr mask=QcepMaskDataPtr())
void	setGrayscale ()

Public Member Functions
	QxrdImageDisplayWidget (QWidget *parent=0)
void	paintEvent (QPaintEvent *event)
QSize	sizeHint () const

Static Public Member Functions
static QxrdImageDisplayWidget *	insertNew (QxrdApplication *app, QTabWidget *tw)

Private Member Functions
void	rebuildImage ()

Private Attributes
QcepDoubleImageDataPtr	m_Data
QcepMaskDataPtr	m_Mask
QcepMaskDataPtr	m_Overflow
QImage	m_DataImage
double	m_Minimum
double	m_Maximum
double	m_StepSize
int	m_TableMax
QVector< QRgb >	m_ColorTable
double	m_DisplayScale

Detailed Description

Definition at line 15 of file qxrdimagedisplaywidget.h.

Constructor & Destructor Documentation

QxrdImageDisplayWidget::QxrdImageDisplayWidget ( QWidget *  parent = 0 )

explicit

Definition at line 9 of file qxrdimagedisplaywidget.cpp.

References setGrayscale().

Referenced by insertNew().

                                                              :
    QWidget(parent),
    m_Data(NULL),
    m_Mask(NULL),
    m_Overflow(NULL),
    m_Minimum(0),
    m_Maximum(25.5),
    m_StepSize(0.1),
    m_TableMax(255),
    m_ColorTable(256),
    m_DisplayScale(0.5)
{
  setGrayscale();
}

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Member Function Documentation

QxrdImageDisplayWidget * QxrdImageDisplayWidget::insertNew ( QxrdApplication *  app, QTabWidget *  tw  )

static

Definition at line 129 of file qxrdimagedisplaywidget.cpp.

References QxrdImageDisplayWidget().

{
  QxrdImageDisplayWidget *res = NULL;

  if (tw) {
    QScrollArea *sa = new QScrollArea();

    res = new QxrdImageDisplayWidget();

    sa -> setWidget(res);

    tw->insertTab(1, sa, "Image");
  }

  return res;
}

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void QxrdImageDisplayWidget::paintEvent

(

QPaintEvent *

event

)

Definition at line 33 of file qxrdimagedisplaywidget.cpp.

References m_DataImage, and m_DisplayScale.

{
  QPainter painter(this);

  QRegion rgn = event->region();
  QVector<QRect> rects = rgn.rects();

  foreach(QRect rect, rects) {
//    printf("paint rect %d,%d,%d,%d\n",
//           rect.left(), rect.top(),
//           rect.right(), rect.bottom());

    QRect  srcRect(rect.left()/m_DisplayScale, rect.top()/m_DisplayScale,
                   rect.width()/m_DisplayScale+1, rect.height()/m_DisplayScale+1);
    QRect  dstRect(srcRect.left()*m_DisplayScale, srcRect.top()*m_DisplayScale,
                   srcRect.width()*m_DisplayScale, srcRect.height()*m_DisplayScale);

    painter.drawImage(dstRect, m_DataImage, srcRect);
  }

//  painter.fillRect(rect(), Qt::lightGray);
//
//  painter.drawImage(rect(), m_DataImage, m_DataImage.rect());

//  painter.fillRect(QRect(10,10,40,40), Qt::red);
}

void QxrdImageDisplayWidget::rebuildImage ( )

private

Definition at line 100 of file qxrdimagedisplaywidget.cpp.

References m_ColorTable, m_Data, m_DataImage, m_Maximum, m_Minimum, m_StepSize, and m_TableMax.

{
  if (m_Data) {
    int width = m_Data->get_Width();
    int height = m_Data->get_Height();
    double *data = m_Data->data();
    QRgb   *table = m_ColorTable.data();

    m_DataImage = QImage(width, height, QImage::Format_ARGB32_Premultiplied);

    for (int row=0; row<height; row++) {
      QRgb* line = (QRgb*)(m_DataImage.scanLine(row));

      for (int col=0; col<width; col++) {
        double val = *data++;

        if (val<m_Minimum) {
          *line++ = table[0];
        } else if (val>m_Maximum) {
          *line++ = table[m_TableMax];
        } else {
          int n = (int)((val - m_Minimum)/m_StepSize);
          *line++ = table[n];
        }
      }
    }
  }
}

void QxrdImageDisplayWidget::setGrayscale ( )

slot

Definition at line 24 of file qxrdimagedisplaywidget.cpp.

References m_ColorTable.

Referenced by QxrdImageDisplayWidget().

{
  m_ColorTable.resize(257);

  for (int i=0; i<256; i++) {
    m_ColorTable[i] = qRgb(i,i,i);
  }
}

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QSize QxrdImageDisplayWidget::sizeHint

(

)

const

Definition at line 90 of file qxrdimagedisplaywidget.cpp.

References m_Data, and m_DisplayScale.

{
  if (m_Data) {
    return QSize(m_Data->get_Width()*m_DisplayScale,
                 m_Data->get_Height()*m_DisplayScale);
  } else {
    return QSize(128,128);
  }
}

void QxrdImageDisplayWidget::updateImage ( QcepDoubleImageDataPtr  img, QcepMaskDataPtr  ovflow = QcepMaskDataPtr(), QcepMaskDataPtr  mask = QcepMaskDataPtr()  )

slot

Definition at line 61 of file qxrdimagedisplaywidget.cpp.

References g_Application, and QcepApplication::printMessage().

Referenced by QxrdWindow::newMask().

{
  QTime tic;
  tic.start();

  if (img) {
    m_Data = img;
  }

  if (ovflow) {
    m_Overflow = ovflow;
  }

  if (mask) {
    m_Mask = mask;
  }

  rebuildImage();

  adjustSize();
  repaint();

  if (g_Application) {
    g_Application->printMessage(tr("Image rebuilt after %1 msec").arg(tic.elapsed()));
  }
}

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Member Data Documentation

QVector<QRgb> QxrdImageDisplayWidget::m_ColorTable

private

Definition at line 49 of file qxrdimagedisplaywidget.h.

Referenced by rebuildImage(), and setGrayscale().

QcepDoubleImageDataPtr QxrdImageDisplayWidget::m_Data

private

Definition at line 38 of file qxrdimagedisplaywidget.h.

Referenced by rebuildImage(), and sizeHint().

QImage QxrdImageDisplayWidget::m_DataImage

private

Definition at line 42 of file qxrdimagedisplaywidget.h.

Referenced by paintEvent(), and rebuildImage().

double QxrdImageDisplayWidget::m_DisplayScale

private

Definition at line 51 of file qxrdimagedisplaywidget.h.

Referenced by paintEvent(), and sizeHint().

QcepMaskDataPtr QxrdImageDisplayWidget::m_Mask

private

Definition at line 39 of file qxrdimagedisplaywidget.h.

double QxrdImageDisplayWidget::m_Maximum

private

Definition at line 45 of file qxrdimagedisplaywidget.h.

Referenced by rebuildImage().

double QxrdImageDisplayWidget::m_Minimum

private

Definition at line 44 of file qxrdimagedisplaywidget.h.

Referenced by rebuildImage().

QcepMaskDataPtr QxrdImageDisplayWidget::m_Overflow

private

Definition at line 40 of file qxrdimagedisplaywidget.h.

double QxrdImageDisplayWidget::m_StepSize

private

Definition at line 46 of file qxrdimagedisplaywidget.h.

Referenced by rebuildImage().

int QxrdImageDisplayWidget::m_TableMax

private

Definition at line 48 of file qxrdimagedisplaywidget.h.

Referenced by rebuildImage().

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The documentation for this class was generated from the following files:

• qxrdimagedisplaywidget.h (Commit a65ccc9... : jennings : 2016-03-15 14:00:18 -0500)
• qxrdimagedisplaywidget.cpp (Commit a65ccc9... : jennings : 2016-03-15 14:00:18 -0500)