private VisualItem VisualItemFactory(IVisualItem ShowItem)
{
VisualItem visualItem = null;
if (ShowItem.DoesShowSpanMultipleRows() == true)
{
visualItem = new VisualSpanner(
ShowItem.ShowText, ShowItem.ItemRowCol, ShowItem.AttrByte,
this.CanvasDefn);
visualItem.CreateFromItem = (ShowItemBase)ShowItem;
}
else
{
visualItem = new VisualTextBlock(
ShowItem.ShowText, ShowItem.ItemRowCol, ShowItem.AttrByte,
this.CanvasDefn.CharBoxDim, this.CanvasDefn.KernDim,
this.CanvasDefn.FontDefn);
visualItem.CreateFromItem = (ShowItemBase)ShowItem;
}
return(visualItem);
}
/// <summary>
/// create VisualTextBlock or VisualSpanner from string to display on the
/// canvase. If string spans multiple rows, create VisualSpanner which in turn
/// contains multiple VisualTextBlock segments.
/// </summary>
/// <param name="ShowText"></param>
/// <param name="ItemRowCol"></param>
/// <param name="AttrByte"></param>
/// <param name="TailAttrByte"></param>
/// <returns></returns>
public VisualItem VisualItemFactory(string ShowText, ZeroRowCol ItemRowCol,
byte?AttrByte, byte?TailAttrByte)
{
VisualItem visualItem = null;
if (CanvasCommon.DoesSpanMultipleRows(
ItemRowCol, AttrByte, ShowText.Length) == true)
{
visualItem =
new VisualSpanner(ShowText, ItemRowCol, AttrByte, this.CanvasDefn);
}
else
{
visualItem = new VisualTextBlock(
ShowText, ItemRowCol, AttrByte,
this.CanvasDefn.CharBoxDim, this.CanvasDefn.KernDim,
this.CanvasDefn.FontDefn);
visualItem.TailAttrByte = TailAttrByte;
}
return(visualItem);
}
/// <summary>
/// create visual items from the show items and place those visual items on the
/// canvase.
/// </summary>
/// <param name="ShowItemList"></param>
private OneRowCol PaintScreen_Actual(
WriteToDisplayCommand WTD_command, TelnetLogList LogList = null)
{
IRowCol curRowCol = new ZeroRowCol(0, 0);
OneRowCol caret = null;
foreach (var order in WTD_command.OrderList)
{
if (LogList != null)
{
LogList.AddItem(Direction.Read, "PaintScreen. " + order.ToString());
}
if (order is TextDataOrder)
{
var tdo = order as TextDataOrder;
if (tdo.IsEmpty() == false)
{
PaintScreen_ApplyTextDataOrder(tdo, curRowCol);
}
curRowCol = tdo.Advance(curRowCol);
}
else if (order is SetBufferAddressOrder)
{
var sba = order as SetBufferAddressOrder;
curRowCol = sba.GetRowCol(this.ScreenDim).ToZeroRowCol();
}
else if (order.OrderCode == WtdOrder.InsertCursor)
{
var ico = order as InsertCursorOrder;
caret = ico.RowCol;
}
else if (order is StartFieldOrder)
{
var sfo = order as StartFieldOrder;
{
var showText = new String(' ', sfo.LL_Length);
var vtb = new VisualTextBlock(
showText, (ZeroRowCol)curRowCol, sfo.AttrByte,
this.CanvasDefn.CharBoxDim, this.CanvasDefn.KernDim,
this.CanvasDefn.FontDefn);
var iMore = vtb as IVisualItemMore;
var node = iMore.InsertIntoVisualItemsList(this.VisualItems);
iMore.AddToCanvas(this);
vtb.SetupFieldItem(
sfo, this.CanvasDefn.CharBoxDim, this.CanvasDefn.KernDim);
}
curRowCol = curRowCol.Advance(1);
}
else if (order is RepeatToAddressOrder)
{
var rao = order as RepeatToAddressOrder;
this.VisualItems.ApplyRepeatToAddressOrder(curRowCol, rao, this);
var lx = rao.RepeatLength((ZeroRowCol)curRowCol);
curRowCol = curRowCol.Advance(lx);
}
else if (order is EraseToAddressOrder)
{
var eao = order as EraseToAddressOrder;
this.VisualItems.ApplyEraseToAddressOrder(curRowCol, eao, this);
var lx = eao.EraseLength((ZeroRowCol)curRowCol);
curRowCol = curRowCol.Advance(lx);
}
}
return(caret);
}
