Problem when i scroll to maximum values

[salvador]

Hello,
i have imlemented already this "screenshot1":https://www.dropbox.com/s/vnoyunb3byroztl/screenshot1.png
I have a problem when i scroll (horizontally or vertically) to maximum values, this is how it looks
"sceenshot2":https://www.dropbox.com/s/bxccieps66a15mm/prtscreen1.png
As you see the last row is not totally aligned.

Some snippset of code:
the initialization of the scrollbars
@void VDatagridView::scrollBarInit()
{
int visibleRows = calcVerticalGeometry();
int verticalPageStep = visibleRows;
int verticalMax = ui->verticalTableView->verticalScrollBar()->maximum();
ui->verticalScrollBar->setMinimum(0);
ui->verticalScrollBar->setSingleStep(1);
ui->verticalScrollBar->setPageStep(verticalPageStep);
ui->verticalScrollBar->setMaximum(verticalMax);

int visibleColumns = calcHorizontalGeometry();
int horizontalPagestep = visibleColumns;
int horizontalMax = ui->horizontalTableView->horizontalScrollBar()->maximum();
ui->horizontalScrollBar->setMaximum(0);
ui->horizontalScrollBar->setSingleStep(1);
ui->horizontalScrollBar->setPageStep(horizontalPagestep);
ui->horizontalScrollBar->setMaximum(horizontalMax+1);
}@
This function called when i start the programm and when the window is resized

The function that draws the grid in the viewport
@void VDatagridView::drawGrid()
{
int verticalSValue = min(ui->verticalScrollBar->value(), getMaxSVerValue());
int columns = calcHorizontalGeometry();
int rows = calcVerticalGeometry();
_dataModel = new QStandardItemModel(rows, columns, this);

ui->tableView->verticalHeader()->hide();
ui->tableView->horizontalHeader()->hide();
ui->tableView->setModel(_dataModel);
if (verticalSValue < getMaxSVerValue())
{
for ( int i = 0; i < rows; i++)
{
ui->tableView->setRowHeight(i, (ui->verticalTableView->rowHeight(verticalSValue+i)));
}

}
else
{
for ( int i = 0; i < rows; i++)
{
ui->tableView->setRowHeight(i, (ui->verticalTableView->rowHeight(verticalSValue+i)));
}

}

int horizontalSValue = min(ui->horizontalScrollBar->value(), getMaxSHorValue());

if (horizontalSValue < getMaxSHorValue())
{
for ( int i = 0; i < columns; i++)
{
ui->tableView->setColumnWidth(i, (ui->horizontalTableView->columnWidth(horizontalSValue+i)));
}

}
else
{
for ( int i = 0; i < columns; i++)
{
ui->tableView->setColumnWidth(i, (ui->horizontalTableView->columnWidth(horizontalSValue+i)));
}

}
}@
The else case is when the scrollbar has the maximum vlaue. I haven't write something different right now because i don't know if this is the problem and also i don't know what should i change.

Also the function tha drawGrid() uses
@int VDatagridView::calcVerticalGeometry()
{
int count=0, freeSpace;
freeSpace = ui->verticalTableView->geometry().height();

for(;;)
{
freeSpace -= ui->verticalTableView->rowHeight( count++ + min( ui->verticalScrollBar->value() ,getMaxSVerValue() ));

if ( freeSpace <=0 || count>100 )
{

  return count;
}

}
}@

@int VDatagridView::calcHorizontalGeometry()
{
int count = 0;
int freeSpace = ui->horizontalTableView->geometry().width();

int scrollBarIndex = ui->horizontalTableView->horizontalScrollBar()->value();

for(;;)
{
freeSpace -= ui->horizontalTableView->columnWidth( count + scrollBarIndex );
count++;

if ( freeSpace <= 0 || count > 100 )
{
  return count;
}

}

}@

horizontalTableView is the table with the dates, verticalTableView is the one on the left and tableView is the grid.

Any ideas?
Thanks in advance!