i_qtable.h

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#ifndef i_qtable_h
#define i_qtable_h
 
/*+
________________________________________________________________________
 
 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Nanne Hemstra
 Date:          January 2008
 RCS:           $Id$
________________________________________________________________________
 
-*/
 
#include "uitable.h"
 
#include <QHeaderView>
#include <QTableWidget>
#include <QTableWidgetItem>
#include <QWidget>
 
 
 
QT_BEGIN_NAMESPACE
 
class i_tableMessenger : public QObject
{
    Q_OBJECT
    friend class        uiTableBody;
 
protected:
i_tableMessenger( QTableWidget*  sndr, uiTable* receiver )
    : sender_(sndr)
    , receiver_(receiver)
    , lastpressedheaderidx_(-1)
{
    connect( sndr, SIGNAL(cellChanged(int,int)),
             this, SLOT(valueChanged(int,int)) );
 
    connect( sndr, SIGNAL(cellClicked(int,int)),
             this, SLOT(clicked(int,int)) );
 
    connect( sndr, SIGNAL(cellPressed(int,int)),
             this, SLOT(cellPressed(int,int)) );
 
    connect( sndr, SIGNAL(cellDoubleClicked(int,int)),
             this, SLOT(doubleClicked(int,int)) );
 
    connect( sndr, SIGNAL(itemSelectionChanged()),
             this, SLOT(itemSelectionChanged()) );
 
    connect( sndr, SIGNAL(cellEntered(int,int)),
             this, SLOT(cellEntered(int,int)) );
 
    connect( sndr->verticalHeader(), SIGNAL(sectionClicked(int)),
             this, SLOT(rowClicked(int)) );
    connect( sndr->horizontalHeader(), SIGNAL(sectionClicked(int)),
             this, SLOT(columnClicked(int)) );
 
    connect( sndr->verticalHeader(), SIGNAL(sectionPressed(int)),
             this, SLOT(rowPressed(int)) );
    connect( sndr->horizontalHeader(), SIGNAL(sectionPressed(int)),
             this, SLOT(columnPressed(int)) );
 
    connect( sndr->verticalHeader(), SIGNAL(sectionDoubleClicked(int)),
             this, SLOT(rowDoubleClicked(int)) );
    connect( sndr->horizontalHeader(), SIGNAL(sectionDoubleClicked(int)),
             this, SLOT(columnDoubleClicked(int)) );
}
 
    virtual             ~i_tableMessenger() {}
 
private:
 
    uiTable*            receiver_;
    QTableWidget*       sender_;
    int                 lastpressedheaderidx_;
 
private slots:
 
#define mTriggerBody( notifier, row, col, triggerstatement ) \
{ \
    BufferString msg = #notifier; \
    msg += " "; msg += row;  \
    msg += " "; msg += col; \
    const int refnr = receiver_->beginCmdRecEvent( msg ); \
    triggerstatement; \
    receiver_->endCmdRecEvent( refnr, msg ); \
}
 
#define mNoTrigger( notifier, row, col ) \
    mTriggerBody( notifier, row, col, )
 
#define mTrigger( notifier, row, col ) \
    mTriggerBody( notifier, row, col, receiver_->notifier.trigger(*receiver_) )
 
#define mHeaderTriggerBody( notifier, idx, vertical, triggerstatement ) \
    mTriggerBody( notifier, (vertical ? idx : -1), (vertical ? -1 : idx), \
                  triggerstatement )
 
#define mNoHeaderTrigger( notifier, idx, vertical ) \
    mHeaderTriggerBody( notifier, idx, vertical, )
 
#define mHeaderTrigger( notifier, idx, vertical ) \
    mHeaderTriggerBody( notifier, idx, vertical, \
                        receiver_->notifier.trigger(idx, *receiver_ ) )
 
 
void valueChanged( int row, int col )
{
    receiver_->notifcell_ = RowCol(row,col);
    mTrigger( valueChanged, row, col );
}
 
 
void clicked( int row, int col )
{
    receiver_->notifcell_ = RowCol(row,col);
    if ( receiver_->buttonstate_ == OD::RightButton )
        mTrigger( rightClicked, row, col )
    else if ( receiver_->buttonstate_ == OD::LeftButton )
        mTrigger( leftClicked, row, col );
}
 
 
void doubleClicked( int row, int col )
{
    receiver_->notifcell_ = RowCol(row,col);
    mTrigger( doubleClicked, row, col );
}
 
 
void itemSelectionChanged()
{ mTrigger( selectionChanged, -1, -1 ); }
 
 
void cellPressed( int row, int col )
{
    receiver_->notifcell_ = RowCol(row,col);
    mNoTrigger( cellPressed, row, col );
}
 
 
void cellEntered( int row, int col )
{ mNoTrigger( cellEntered, row, col ); }
 
 
void rowClicked( int idx )
{
    // Trigger is conditional to repair Qt inconsistency. Unlike tables and
    // and lists, the header signals a final click after mouse dragging.
    if ( idx == lastpressedheaderidx_ )
        mHeaderTrigger( rowClicked, idx, true );
}
 
 
void columnClicked( int idx )
{
    // Trigger is conditional to repair Qt inconsistency. Unlike tables and
    // and lists, the header signals a final click after mouse dragging.
    if ( idx == lastpressedheaderidx_ )
        mHeaderTrigger( columnClicked, idx, false );
}
 
 
void rowPressed( int idx )
{
    lastpressedheaderidx_ = idx;
    mNoHeaderTrigger( rowPressed, idx, true );
}
 
 
void columnPressed( int idx )
{
    lastpressedheaderidx_ = idx;
    mNoHeaderTrigger( columnPressed, idx, false );
}
 
 
void rowDoubleClicked( int idx )
{ mNoHeaderTrigger( rowDoubleClicked, idx, true ); }
 
 
void columnDoubleClicked( int idx )
{ mNoHeaderTrigger( columnDoubleClicked, idx, false ); }
 
#undef mNoTrigger
#undef mTrigger
#undef mTriggerBody
#undef mHeaderTriggerBody
#undef mNoHeaderTrigger
#undef mHeaderTrigger
 
};
 
QT_END_NAMESPACE
 
#endif