public override void Draw(TextDrawingRequest request)
{
request.Canvas.Translate(new Position(0, request.TotalAscent));
request.Canvas.DrawSectionLink(SectionName, new Size(request.TextSize.Width, request.TextSize.Height));
request.Canvas.Translate(new Position(0, -request.TotalAscent));
base.Draw(request);
}
public void Draw(TextDrawingRequest request)
{
Element.VisitChildren(x => (x as IStateResettable)?.ResetState());
Element.VisitChildren(x => x.Initialize(request.PageContext, request.Canvas));
request.Canvas.Translate(new Position(0, request.TotalAscent));
Element.Draw(new Size(request.TextSize.Width, -request.TotalAscent));
request.Canvas.Translate(new Position(0, -request.TotalAscent));
}
public override void Draw(TextDrawingRequest request)
{
UpdatePageNumberText(request.PageContext);
base.Draw(request);
}
internal override void Draw(Size availableSpace)
{
var lines = DivideTextItemsIntoLines(availableSpace.Width, availableSpace.Height).ToList();
if (!lines.Any())
{
return;
}
var heightOffset = 0f;
var widthOffset = 0f;
foreach (var line in lines)
{
widthOffset = 0f;
var alignmentOffset = GetAlignmentOffset(line.Width);
Canvas.Translate(new Position(alignmentOffset, 0));
Canvas.Translate(new Position(0, -line.Ascent));
foreach (var item in line.Elements)
{
var textDrawingRequest = new TextDrawingRequest
{
Canvas = Canvas,
PageContext = PageContext,
StartIndex = item.Measurement.StartIndex,
EndIndex = item.Measurement.EndIndex,
TextSize = new Size(item.Measurement.Width, line.LineHeight),
TotalAscent = line.Ascent
};
item.Item.Draw(textDrawingRequest);
Canvas.Translate(new Position(item.Measurement.Width, 0));
widthOffset += item.Measurement.Width;
}
Canvas.Translate(new Position(-alignmentOffset, 0));
Canvas.Translate(new Position(-line.Width, line.Ascent));
Canvas.Translate(new Position(0, line.LineHeight));
heightOffset += line.LineHeight;
}
Canvas.Translate(new Position(0, -heightOffset));
lines
.SelectMany(x => x.Elements)
.GroupBy(x => x.Item)
.Where(x => x.Any(y => y.Measurement.IsLast))
.Select(x => x.Key)
.ToList()
.ForEach(x => RenderingQueue.Dequeue());
var lastElementMeasurement = lines.Last().Elements.Last().Measurement;
CurrentElementIndex = lastElementMeasurement.IsLast ? 0 : lastElementMeasurement.EndIndex;
if (!RenderingQueue.Any())
{
ResetState();
}
float GetAlignmentOffset(float lineWidth)
{
if (Alignment == HorizontalAlignment.Left)
{
return(0);
}
var emptySpace = availableSpace.Width - lineWidth;
if (Alignment == HorizontalAlignment.Right)
{
return(emptySpace);
}
if (Alignment == HorizontalAlignment.Center)
{
return(emptySpace / 2);
}
throw new ArgumentException();
}
}