){kind=link}
/// <summary>
/// Method that will set properties to be inherited by this branch renderer's
/// children and will iterate over all children in order to draw them.
/// </summary>
/// <param name="context">
/// the object that knows the place to draw this element and
/// maintains its state
/// </param>
protected internal override void DoDraw(SvgDrawContext context)
{
if (GetChildren().Count > 0)
{
// if branch has no children, don't do anything
PdfCanvas currentCanvas = context.GetCurrentCanvas();
if (performRootTransformations)
{
currentCanvas.BeginText();
//Current transformation matrix results in the character glyphs being mirrored, correct with inverse tf
AffineTransform rootTf;
if (this.ContainsAbsolutePositionChange())
{
rootTf = GetTextTransform(this.GetAbsolutePositionChanges(), context);
}
else
{
rootTf = new AffineTransform(TEXTFLIP);
}
currentCanvas.SetTextMatrix(rootTf);
//Reset context of text move
context.ResetTextMove();
//Apply relative move
if (this.ContainsRelativeMove())
{
float[] rootMove = this.GetRelativeTranslation();
context.AddTextMove(rootMove[0], -rootMove[1]);
}
//-y to account for the text-matrix transform we do in the text root to account for the coordinates
//handle white-spaces
if (!whiteSpaceProcessed)
{
SvgTextUtil.ProcessWhiteSpace(this, true);
}
}
ApplyTextRenderingMode(currentCanvas);
if (this.attributesAndStyles != null)
{
ResolveFontSize();
ResolveFont(context);
currentCanvas.SetFontAndSize(font, fontSize);
foreach (ISvgTextNodeRenderer c in children)
{
float childLength = c.GetTextContentLength(fontSize, font);
if (c.ContainsAbsolutePositionChange())
{
//TODO: DEVSIX-2507 support rotate and other attributes
float[][] absolutePositions = c.GetAbsolutePositionChanges();
AffineTransform newTransform = GetTextTransform(absolutePositions, context);
//overwrite the last transformation stored in the context
context.SetLastTextTransform(newTransform);
//Apply transformation
currentCanvas.SetTextMatrix(newTransform);
//Absolute position changes requires resetting the current text move in the context
context.ResetTextMove();
}
//Handle Text-Anchor declarations
float textAnchorCorrection = GetTextAnchorAlignmentCorrection(childLength);
if (!CssUtils.CompareFloats(0f, textAnchorCorrection))
{
context.AddTextMove(textAnchorCorrection, 0);
}
//Move needs to happen before the saving of the state in order for it to cascade beyond
if (c.ContainsRelativeMove())
{
float[] childMove = c.GetRelativeTranslation();
context.AddTextMove(childMove[0], -childMove[1]);
}
//-y to account for the text-matrix transform we do in the text root to account for the coordinates
currentCanvas.SaveState();
c.Draw(context);
context.AddTextMove(childLength, 0);
currentCanvas.RestoreState();
//Restore transformation matrix
if (!context.GetLastTextTransform().IsIdentity())
{
currentCanvas.SetTextMatrix(context.GetLastTextTransform());
}
}
if (performRootTransformations)
{
currentCanvas.EndText();
}
}
}
}
