QseGraphScansModel Class Reference

#include <qsegraphscansmodel.h>

Inheritance diagram for QseGraphScansModel:

Public Slots
void	operationCompleted ()

Public Member Functions
	QseGraphScansModel (QseDataSet *dataSet, QTableView *table, QObject *parent=0)
int	rowCount (const QModelIndex &parent=QModelIndex()) const
int	columnCount (const QModelIndex &parent=QModelIndex()) const
QVariant	data (const QModelIndex &index, int role) const
QVariant	headerData (int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const
QModelIndex	indexOfScan (int n)

Private Types
typedef QAbstractTableModel	inherited

Private Member Functions
bool	scanSelected (int s)

Private Attributes
QseDataSet *	m_DataSet
QTableView *	m_TableView
int	m_PrevRowCount
int	m_PrevColumnCount

Detailed Description

Definition at line 9 of file qsegraphscansmodel.h.

Member Typedef Documentation

typedef QAbstractTableModel QseGraphScansModel::inherited

private

Definition at line 11 of file qsegraphscansmodel.h.

Constructor & Destructor Documentation

QseGraphScansModel::QseGraphScansModel	(	QseDataSet *	dataSet,
		QTableView *	table,
		QObject *	parent = 0
	)

Definition at line 9 of file qsegraphscansmodel.cpp.

  : QAbstractTableModel(parent),
    m_DataSet(dataSet),
    m_TableView(table),
    m_PrevRowCount(0),
    m_PrevColumnCount(3)
{
//   connect(dataSet, SIGNAL(dataChanged()),
//        this,    SLOT(dataChanged()));
  connect(dataSet, SIGNAL(operationCompleted()),
          this,    SLOT(operationCompleted()));
}

Member Function Documentation

int QseGraphScansModel::columnCount

(

const QModelIndex &

parent = QModelIndex()

)

const

Definition at line 109 of file qsegraphscansmodel.cpp.

Referenced by data().

{
  int res = 3;

//   if (res > m_PrevColumnCount) {
//     printf("QseGraphScansModel::columnCount(%d>%d)\n", res, m_PrevColumnCount);
//   } else if (res < m_PrevColumnCount) {
//     printf("QseGraphScansModel::columnCount(%d<%d)\n", res, m_PrevColumnCount);    
//   }

//   m_PrevColumnCount = res;

  return res;
}

QVariant QseGraphScansModel::data	(	const QModelIndex &	index,
		int	role
	)		const

Definition at line 194 of file qsegraphscansmodel.cpp.

References columnCount(), QseScan::columnCount(), m_DataSet, min(), QseDataSet::scan(), QseScan::scanColumnCountLine(), QseScan::scanColumnNamesLine(), QseScan::scanCommand(), and QseScan::scanDateLine().

{
  if (!index.isValid()) {
    return QVariant();
  }

  int row = index.row();
  int col = index.column();
  
  QseScan *scan = m_DataSet->scan(row);

  switch (role) {
  case Qt::DisplayRole:
    switch (col) {
    case 0:
      return scan -> name();
      break;
    case 1:
      return scan -> maxRowCount();
      break;
    case 2:
      return scan -> columnCount();
      break;
    default:
      return QVariant();
    }
    break;

//   case Qt::BackgroundRole:
//     return QColor(255,255,192);
//     break;

//   case Qt::ForegroundRole:
//     return QBrush(Qt::red);
//     break;

  case Qt::ToolTipRole:
    {
      const int maxlines = 15;
      const int maxlength = 80;

      QString res;

      res = scan->scanCommand()+"\n";
      res += scan->scanDateLine()+"\n";
      
      QStringList hdr = scan -> header();
      int nlines = min(hdr.size(),maxlines);
      for (int i=0; i<nlines; i++) {
        QString l = hdr[i];
        if (l.size()>maxlength) {
          res += l.mid(0,maxlength) + " ...\n";
        } else {
          res += l + "\n";
        }
      }
      if (hdr.size()>maxlines) {
        res += "...";
      } else {
        int ncols = scan->columnCount();
        res += scan->scanColumnCountLine()+"\n";
        QString l = scan->scanColumnNamesLine();
        if (l.size()>maxlength) {
          res += l.mid(0,maxlength) + " ...\n";
        } else {
          res += l + "\n";
        }
      }
      return res;
    }
    break;

  case Qt::SizeHintRole:
    switch (col) {
    case 0:
      return QSize(200,15);
      break;

    case 1:
      return QSize(20,15);
      break;

    case 2:
      return QSize(20,15);
      break;

    default:
      return QVariant();
    }
    break;

  default:
//     printf("QseGraphScansModel::data(%d,%d,%s)\n", row,col, role_string(role));
    return QVariant();
  }
}

QVariant QseGraphScansModel::headerData	(	int	section,
		Qt::Orientation	orientation,
		int	role = Qt::DisplayRole
	)		const

Definition at line 293 of file qsegraphscansmodel.cpp.

{
  if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {
    switch (section) {
    case 0:
      return "Scan";
      break;
    case 1:
      return "rows";
      break;
    case 2:
      return "cols";
      break;
    default:
      return QVariant();
    }
  }

  if (orientation == Qt::Vertical && role == Qt::DisplayRole) {
    return section;
  }

  return QVariant();
}

QModelIndex QseGraphScansModel::indexOfScan

(

int

n

)

Definition at line 83 of file qsegraphscansmodel.cpp.

{
  return index(n,0,QModelIndex());
}

void QseGraphScansModel::operationCompleted ( )

slot

Definition at line 31 of file qsegraphscansmodel.cpp.

References m_DataSet, m_PrevColumnCount, m_PrevRowCount, m_TableView, and scanSelected().

{
  int nrows = m_DataSet -> scanCount();
  int ncols = 3;

  if (ncols > m_PrevColumnCount) {
    beginInsertColumns(QModelIndex(), m_PrevColumnCount, ncols-1);
    m_PrevColumnCount = ncols;
    endInsertColumns();
  } else if (ncols < m_PrevColumnCount) {
    beginRemoveColumns(QModelIndex(), ncols, m_PrevColumnCount-1);
    m_PrevColumnCount = ncols;
    endRemoveColumns();
  }

  if (nrows > m_PrevRowCount) {
    beginInsertRows(QModelIndex(), m_PrevRowCount, nrows-1);

    if (scanSelected(m_PrevRowCount-1)) {
      QItemSelectionModel *m = m_TableView -> selectionModel();

      if (scanSelected(m_PrevRowCount-2)) {
        m -> select(index(nrows-1,0),
                    QItemSelectionModel::Current | QItemSelectionModel::Rows |
                    QItemSelectionModel::Select);                 
      } else {
        QItemSelection ss(index(m_PrevRowCount-1,0),index(m_PrevRowCount-1,0));
        ss.select(index(nrows-1,0),index(nrows-1,0));
        m -> select(ss,
                    QItemSelectionModel::Current | QItemSelectionModel::Rows |
                    QItemSelectionModel::Toggle);
      }
    }

    m_PrevRowCount = nrows;
    endInsertRows();
  } else if (nrows < m_PrevRowCount) {
    beginRemoveRows(QModelIndex(), nrows, m_PrevRowCount-1);
    m_PrevRowCount = nrows;
    endRemoveRows();
  }

  QModelIndex topLeft = createIndex(0,0);
  QModelIndex botRight = createIndex(m_PrevRowCount,m_PrevColumnCount);

  emit dataChanged(topLeft, botRight);

   m_TableView -> resizeRowsToContents();
   m_TableView -> resizeColumnsToContents();
}

int QseGraphScansModel::rowCount

(

const QModelIndex &

parent = QModelIndex()

)

const

Definition at line 89 of file qsegraphscansmodel.cpp.

References m_DataSet.

{
  if (parent.column() > 0) {
    return 0;
  }

  int res = m_DataSet -> scanCount();

//   if (res > m_PrevRowCount) {
//     printf("QseGraphScansModel::rowCount(%d>%d)\n", res, m_PrevRowCount);
//   } else if (res < m_PrevRowCount) {
//     printf("QseGraphScansModel::rowCount(%d<%d)\n", res, m_PrevRowCount);    
//   }

//   m_PrevRowCount = res;

  return res;
}

bool QseGraphScansModel::scanSelected ( int  s )

private

Definition at line 23 of file qsegraphscansmodel.cpp.

References m_TableView.

Referenced by operationCompleted().

{
  QItemSelectionModel *m = m_TableView -> selectionModel();

  return (m->isRowSelected(s, QModelIndex()));
}

Member Data Documentation

QseDataSet* QseGraphScansModel::m_DataSet

private

Definition at line 34 of file qsegraphscansmodel.h.

Referenced by data(), operationCompleted(), and rowCount().

int QseGraphScansModel::m_PrevColumnCount

mutableprivate

Definition at line 37 of file qsegraphscansmodel.h.

Referenced by operationCompleted().

int QseGraphScansModel::m_PrevRowCount

mutableprivate

Definition at line 36 of file qsegraphscansmodel.h.

Referenced by operationCompleted().

QTableView* QseGraphScansModel::m_TableView

private

Definition at line 35 of file qsegraphscansmodel.h.

Referenced by operationCompleted(), and scanSelected().

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

• qsegraphscansmodel.h
• qsegraphscansmodel.cpp