public VisualSpanner(
ScreenContent ScreenContent, ContinuedContentField ContContentField,
CanvasDefn CanvasDefn)
: base(ContContentField.RowCol)
{
this.SegmentList = new List <VisualTextBlockSegment>();
var fieldNum = ContContentField.FieldNum;
// create VisualTextBloc item for each segment of the continued field.
int segBx = 0;
foreach (var contField in ScreenContent.ContinuedFieldSegments(fieldNum))
{
var segNum = contField.FieldKey.SegNum;
bool attrByteOccupySpace = true;
var vtb = new VisualTextBlockSegment(
this, segNum, segBx,
contField.GetShowText(ScreenContent),
contField.RowCol as ZeroRowCol, contField.GetAttrByte(ScreenContent),
CanvasDefn, attrByteOccupySpace);
vtb.SetupUnderline();
this.SegmentList.Add(vtb);
vtb.ContinuedFieldSegmentCode = contField.ContinuedFieldSegmentCode;
segBx += contField.GetShowText(ScreenContent).Length;
}
this.AttrByte = ContContentField.GetAttrByte(ScreenContent);
}
public VisualSpanner(string Text, ZeroRowCol ItemRowCol, byte?AttrByte,
CanvasDefn CanvasDefn)
: base(ItemRowCol)
{
// create VisualTextBlock items for each segment that fits on the row.
this.SegmentList = new List <VisualTextBlockSegment>();
CreateTextBlockSegments(this, Text, ItemRowCol, AttrByte, CanvasDefn);
this.AttrByte = AttrByte;
}
public VisualTextBlockSegment(
VisualSpanner Parent, int SegNum, int SegBx,
string Text, ZeroRowCol RowCol, byte?AttrByte, CanvasDefn CanvasDefn,
bool AttrByteOccupySpace)
: base(Text, RowCol, AttrByte,
CanvasDefn.CharBoxDim, CanvasDefn.KernDim, CanvasDefn.FontDefn)
{
this.Parent = Parent;
this.SegNum = SegNum;
this.SegBx = SegBx;
this.AttrByteOccupySpace = AttrByteOccupySpace;
}
private static void CreateTextBlockSegments(
VisualSpanner Parent,
string Text, IRowCol StartRowCol, byte?AttrByte,
CanvasDefn CanvasDefn)
{
IRowCol rowCol = StartRowCol;
string text = Text;
int segNum = 0;
int segBx = 0;
// advance past attrByte.
#if skip
if (AttrByte != null)
{
rowCol = rowCol.Advance(1);
}
#endif
bool attrByteOccupySpace = true;
// loop create textblock segments until no more text.
while (text.Length > 0)
{
// space on this row.
var remLx = rowCol.GetRowRemaining();
if (attrByteOccupySpace == true)
{
remLx -= 1;
}
// text to place on current row.
int usedLx = 0;
if (remLx > text.Length)
{
usedLx = text.Length;
}
else
{
usedLx = remLx;
}
// create the textblock segment.
if (usedLx > 0)
{
segNum += 1;
var vtb = new VisualTextBlockSegment(
Parent, segNum, segBx,
Text.Substring(segBx, usedLx), rowCol as ZeroRowCol, AttrByte,
CanvasDefn, attrByteOccupySpace);
vtb.SetupUnderline();
Parent.SegmentList.Add(vtb);
// advance to next segment in show text.
segBx += usedLx;
if (text.Length > usedLx)
{
text = text.Substring(usedLx);
}
else
{
text = "";
}
}
// advance rowCol
if (attrByteOccupySpace == true)
{
usedLx += 1;
}
rowCol = rowCol.Advance(usedLx);
attrByteOccupySpace = false;
}
}