public static void VerticalDraw(this List <BaseNode> list, Cairo.Context cr, double xPos, double yPos, PrintLayer layer)
{
// Draw all of the children vertically, but to keep the lines correctly, we will actually
// render them in reverse from the bottom up.
for (int i = list.Count - 1; i >= 0; i--)
{
BaseNode node = list[i];
TextExtents extents = node.GetExtents(cr);
node.Draw(cr, xPos, yPos, layer);
yPos -= extents.Height + extents.YAdvance;
}
}
public bool TryAddLine(Cairo.Context cr, BaseNode lineNode)
{
// If we have not yet determined the actual page height, calculate it now.
if (_availablePageHeight == 0)
{
_availablePageHeight = _pageSettings.PageHeight;
if (_header != null)
{
_availablePageHeight -= _header.GetExtents(cr).Height;
}
if (_footer != null)
{
_availablePageHeight -= _footer.GetExtents(cr).Height;
}
}
// Now see if the text field will fit on our page.
bool retval = false;
TextExtents extents = lineNode.GetExtents(cr);
if (_currentYPos + extents.Height < _availablePageHeight)
{
if (_currentRegion != null)
{
_currentRegion.AddNode(lineNode);
}
else
{
_children.Add(lineNode);
}
retval = true;
_currentYPos += extents.Height + extents.YAdvance;
}
return(retval);
}
