/// <summary>
/// Creates a new Text character run and adds it to the current line.
/// </summary>
/// <param name="size">the size of the run in PDFUnits</param>
/// <param name="chars">The characters that should be rendered in the run</param>
private void AddProxyToCurrentLine(PDFSize size, PDFTextProxyOp op)
{
this.AssertCurrentLine();
PDFTextRunProxy run = new PDFTextRunProxy(size, op, this.CurrentLine, this.TextComponent);
this.CurrentLine.AddRun(run);
}
protected virtual void RenderTextDecoration(PDFTextRunEnd endRun, PDFRenderContext context, PDFWriter writer, PDFUnit vOffset, PDFUnit linethickness)
{
if (context.ShouldLogDebug)
{
context.TraceLog.Begin(TraceLevel.Debug, "Text Decoration", "Starting to render text decorations");
}
//set up the graphics context
PDFPen pen = PDFPen.Create(this.TextRenderOptions.FillBrush, linethickness);
context.Graphics.SaveGraphicsState();
pen.SetUpGraphics(context.Graphics, this.TotalBounds);
bool drawing = false;
PDFPoint linestart = new PDFPoint(this.StartTextCursor.Width, this.StartTextCursor.Height + vOffset);
foreach (PDFLayoutLine line in this.Lines)
{
PDFUnit linewidth = 0;
foreach (PDFLayoutRun run in line.Runs)
{
if (run == this)
{
drawing = true;
//lineoffset += this.LineInset;
}
else if (run == endRun)
{
drawing = false;
break;
}
else if (drawing)
{
if (run is PDFTextRunCharacter)
{
PDFTextRunCharacter chars = (PDFTextRunCharacter)run;
PDFPoint start = new PDFPoint(linestart.X + linewidth, linestart.Y);
PDFPoint end = new PDFPoint(linestart.X + linewidth + chars.Width + chars.ExtraSpace, linestart.Y);
context.Graphics.DrawLine(start, end);
if (context.ShouldLogDebug)
{
context.TraceLog.Add(TraceLevel.Debug, "Text Decoration", "Drawn line from " + start + " to " + end);
}
linewidth += chars.Width;
}
else if (run is PDFTextRunEnd)
{
}
else if (run is PDFTextRunNewLine)
{
PDFTextRunNewLine newline = (PDFTextRunNewLine)run;
PDFSize offset = newline.Offset;
if (null != newline.NextLineSpacer)
{
PDFUnit nextoffset = newline.NextLineSpacer.Width;
offset.Width = nextoffset - offset.Width;
}
linestart.X += offset.Width;
linestart.Y += offset.Height;
}
else if (run is PDFTextRunSpacer)
{
//PDFTextRunSpacer spacer = (PDFTextRunSpacer)run;
//cursor.X += spacer.Width;
}
else if (run is PDFTextRunProxy)
{
PDFTextRunProxy chars = (PDFTextRunProxy)run;
PDFPoint start = new PDFPoint(linestart.X + linewidth, linestart.Y);
PDFPoint end = new PDFPoint(linestart.X + linewidth + chars.Width, linestart.Y);
context.Graphics.DrawLine(start, end);
if (context.ShouldLogDebug)
{
context.TraceLog.Add(TraceLevel.Debug, "Text Decoration", "Drawn line from " + start + " to " + end);
}
linewidth += chars.Width;
}
}
}
}
if (context.ShouldLogDebug)
{
context.TraceLog.End(TraceLevel.Debug, "Text Decoration", "Completed the renderering of text decorations");
}
//tear down the current graphics state
context.Graphics.RestoreGraphicsState();
}
