protected override void Initialize(SvgElement element)
{
base.Initialize(element);
_isMeasuring = false;
_isGroupAdded = false;
_isTextPath = false;
_textWidth = 0;
_drawGroup = null;
_textElement = element as SvgTextBaseElement;
if (_textElement == null)
{
throw new InvalidOperationException();
}
if (_textContext == null)
{
_textContext = new WpfTextContext(_textElement, this);
}
else
{
_textContext.SetElement(_textElement);
}
if (_horzRenderer == null)
{
_horzRenderer = new WpfHorzTextRenderer(_textElement, this);
}
else
{
_horzRenderer.Uninitialize();
_horzRenderer.SetElement(_textElement);
}
if (_vertRenderer == null)
{
_vertRenderer = new WpfVertTextRenderer(_textElement, this);
}
else
{
_vertRenderer.Uninitialize();
_vertRenderer.SetElement(_textElement);
}
if (_pathRenderer == null)
{
_pathRenderer = new WpfPathTextRenderer(_textElement, this);
}
else
{
_pathRenderer.Uninitialize();
_pathRenderer.SetElement(_textElement);
}
}
public WpfTextRendering(SvgElement element)
: base(element)
{
_textElement = element as SvgTextElement;
if (_textElement == null)
{
throw new InvalidOperationException();
}
_horzRenderer = new WpfHorzTextRenderer(_textElement, this);
_vertRenderer = new WpfVertTextRenderer(_textElement, this);
_pathRenderer = new WpfPathTextRenderer(_textElement, this);
}
public WpfTextRendering(SvgElement element)
: base(element)
{
_textElement = element as SvgTextBaseElement;
if (_textElement != null)
{
_textContext = new WpfTextContext(_textElement, this);
_horzRenderer = new WpfHorzTextRenderer(_textElement, this);
_vertRenderer = new WpfVertTextRenderer(_textElement, this);
_pathRenderer = new WpfPathTextRenderer(_textElement, this);
}
}
public override void AfterRender(WpfDrawingRenderer renderer)
{
if (_horzRenderer != null)
{
_horzRenderer.Uninitialize();
_horzRenderer = null;
}
if (_vertRenderer != null)
{
_vertRenderer.Uninitialize();
_vertRenderer = null;
}
if (_pathRenderer != null)
{
_pathRenderer.Uninitialize();
_pathRenderer = null;
}
if (_drawContext != null)
{
_drawContext.Close();
_drawContext = null;
}
WpfDrawingContext context = renderer.Context;
// TODO-PAUL: Testing this for validity...
// Remove the GuidelineSet from the groups added by the FormattedText to reduced the
// size of output XAML...
if (_drawGroup != null)
{
ResetGuidelineSet(_drawGroup);
}
if (context.IncludeRuntime)
{
if (_drawGroup != null)
{
// Add the element/object type...
SvgObject.SetType(_drawGroup, SvgObjectType.Text);
// Add title for tooltips, if any...
SvgTitleElement titleElement = _svgElement.SelectSingleNode("title") as SvgTitleElement;
if (titleElement != null)
{
string titleValue = titleElement.InnerText;
if (!string.IsNullOrWhiteSpace(titleValue))
{
SvgObject.SetTitle(_drawGroup, titleValue);
}
}
}
}
if (!_isGroupAdded)
{
if (_drawGroup != null)
{
if (_isTextPath || _drawGroup.Transform != null || _drawGroup.ClipGeometry != null)
{
DrawingGroup curGroup = _context.Peek();
Debug.Assert(curGroup != null);
if (curGroup != null)
{
curGroup.Children.Add(_drawGroup);
}
}
else if (_drawGroup.Children.Count != 0)
{
DrawingGroup firstGroup = _drawGroup.Children[0] as DrawingGroup;
if (firstGroup != null && firstGroup.Children.Count != 0)
{
//Drawing firstDrawing = firstGroup.Children[0];
DrawingGroup curGroup = _context.Peek();
Debug.Assert(curGroup != null);
if (curGroup != null)
{
curGroup.Children.Add(_drawGroup);
}
}
}
}
}
else
{
if (_drawGroup != null)
{
DrawingGroup currentGroup = context.Peek();
if (currentGroup == null || currentGroup != _drawGroup)
{
throw new InvalidOperationException("An existing group is expected.");
}
context.Pop();
}
}
_context = null;
_drawGroup = null;
base.AfterRender(renderer);
}