Example #1
0
void Dropper::handleInternalDrag( QDropEvent* dropEvent, AbstractByteArrayView* sourceByteArrayView )
{
    // get drag origin
    AddressRange selection = sourceByteArrayView->tableRanges()->removeSelection();

    ByteArrayTableCursor* tableCursor = mByteArrayView->tableCursor();
    AbstractByteArrayModel* byteArrayModel = mByteArrayView->byteArrayModel();

    Address insertIndex = tableCursor->realIndex();

    // is this a move?
    if( dropEvent->proposedAction() == Qt::MoveAction )
    {
        // ignore the copy hold in the event but only move
        Address newCursorIndex;
        // need to swap?
        if( selection.end() < insertIndex )
        {
            newCursorIndex = insertIndex;
            const Address firstIndex = selection.start();
            selection.set( selection.nextBehindEnd(), insertIndex-1 );
            insertIndex = firstIndex;
        }
        else
            newCursorIndex = insertIndex + selection.width();

        const bool success = byteArrayModel->swap( insertIndex, selection );
        if( success )
        {
            tableCursor->gotoCIndex( newCursorIndex );
            emit mByteArrayView->cursorPositionChanged( tableCursor->realIndex() );
        }
    }
    // is a copy
    else
    {
        // TODO: should this be a method of AbstractByteArrayModel, to reuse piece data?

        // get data
        const QByteArray data =
            dropEvent->mimeData()->data( QLatin1String(DropperOctetStreamFormatName) );

        if( !data.isEmpty() )
        {
            if( mByteArrayView->isOverwriteMode() )
            {
                const Size length = mByteArrayView->layout()->length();
                if( !tableCursor->isBehind() && length > 0 )
                {
                    AddressRange overwriteRange = AddressRange::fromWidth( insertIndex, data.size() );
                    overwriteRange.restrictEndTo( length-1 );
                    if( overwriteRange.isValid() )
                        byteArrayModel->replace( overwriteRange, reinterpret_cast<const Byte*>(data.constData()), overwriteRange.width() );
                }
            }
            else
                byteArrayModel->insert( insertIndex, reinterpret_cast<const Byte*>(data.constData()), data.size() );
        }
    }
}
Example #2
0
void MouseNavigator::handleMouseMove( const QPoint& point ) // handles the move of the mouse with pressed buttons
{
    ByteArrayTableCursor* tableCursor = mView->tableCursor();
    ByteArrayTableRanges* tableRanges = mView->tableRanges();

    const bool oldHasSelection = tableRanges->hasSelection();
    const int yOffset = mView->yOffset();
    const int behindLastYOffset = yOffset + mView->visibleHeight();
    // scrolltimer but inside of viewport?
    if( mScrollTimer->isActive() )
    {
        if( yOffset <= point.y() && point.y() < behindLastYOffset )
            mScrollTimer->stop();
    }
    // no scrolltimer and outside of viewport?
    else
    {
        if( point.y() < yOffset || behindLastYOffset <= point.y() )
            mScrollTimer->start( DefaultScrollTimerPeriod );
    }
    mView->pauseCursor();

    mView->placeCursor( point );
    mView->ensureCursorVisible();

    // do wordwise selection?
    if( mInLMBDoubleClick && tableRanges->hasFirstWordSelection() )
    {
        Address newIndex = tableCursor->realIndex();
        const AddressRange firstWordSelection = tableRanges->firstWordSelection();
        const WordByteArrayService WBS( mView->byteArrayModel(), mView->charCodec() );
        // are we before the selection?
        if( firstWordSelection.startsBehind(newIndex) )
        {
            tableRanges->ensureWordSelectionForward( false );
            newIndex = WBS.indexOfLeftWordSelect( newIndex );
        }
        // or behind?
        else if( firstWordSelection.endsBefore(newIndex) )
        {
            tableRanges->ensureWordSelectionForward( true );
            newIndex = WBS.indexOfRightWordSelect( newIndex );
        }
        // or inside?
        else
        {
            tableRanges->ensureWordSelectionForward( true );
            newIndex = firstWordSelection.nextBehindEnd();
        }

        tableCursor->gotoIndex( newIndex );
    }

    if( tableRanges->selectionStarted() )
        tableRanges->setSelectionEnd( mView->cursorPosition() );

    mView->updateChanged();

    mView->unpauseCursor();

    const bool newHasSelection = tableRanges->hasSelection();
    emit mView->cursorPositionChanged( mView->cursorPosition() );
    emit mView->selectionChanged( tableRanges->selection() );
    if( oldHasSelection != newHasSelection )
    {
        if( ! mView->isOverwriteMode() ) emit mView->cutAvailable( newHasSelection );
        emit mView->copyAvailable( newHasSelection );
        emit mView->hasSelectedDataChanged( newHasSelection );
    }
}