/// <summary>
/// Removes any previously applied transforms from the specified <see cref="ISvgRenderer"/>.
/// </summary>
/// <param name="renderer">The <see cref="ISvgRenderer"/> that should have transforms removed.</param>
protected internal virtual void PopTransforms(ISvgRenderer renderer)
{
renderer.Transform = _graphicsTransform;
_graphicsTransform.Dispose();
_graphicsTransform = null;
renderer.SetClip(_graphicsClip);
_graphicsClip = null;
}
/// <summary>
/// Common code for rendering a marker once the orientation angle has been calculated
/// </summary>
/// <param name="fAngle"></param>
/// <param name="pRenderer"></param>
/// <param name="pOwner"></param>
/// <param name="pMarkerPoint"></param>
private void RenderPart2(float fAngle, SvgRenderer pRenderer, SvgPath pOwner, PointF pMarkerPoint)
{
Pen pRenderPen = CreatePen(pOwner, pRenderer);
GraphicsPath markerPath = GetClone(pOwner);
Matrix transMatrix = new Matrix();
transMatrix.Translate(pMarkerPoint.X, pMarkerPoint.Y);
if (Orient.IsAuto)
{
transMatrix.Rotate(fAngle);
}
else
{
transMatrix.Rotate(Orient.Angle);
}
switch (MarkerUnits)
{
case SvgMarkerUnits.strokeWidth:
transMatrix.Translate(AdjustForViewBoxWidth(-RefX.ToDeviceValue(pRenderer, UnitRenderingType.Horizontal, this) *
pOwner.StrokeWidth.ToDeviceValue(pRenderer, UnitRenderingType.Other, this)),
AdjustForViewBoxHeight(-RefY.ToDeviceValue(pRenderer, UnitRenderingType.Vertical, this) *
pOwner.StrokeWidth.ToDeviceValue(pRenderer, UnitRenderingType.Other, this)));
break;
case SvgMarkerUnits.userSpaceOnUse:
transMatrix.Translate(-RefX.ToDeviceValue(pRenderer, UnitRenderingType.Horizontal, this),
-RefY.ToDeviceValue(pRenderer, UnitRenderingType.Vertical, this));
break;
}
markerPath.Transform(transMatrix);
pRenderer.DrawPath(pRenderPen, markerPath);
SvgPaintServer pFill = Fill;
SvgFillRule pFillRule = FillRule; // TODO: What do we use the fill rule for?
float fOpacity = FillOpacity;
if (pFill != null)
{
Brush pBrush = pFill.GetBrush(this, pRenderer, fOpacity);
pRenderer.FillPath(pBrush, markerPath);
pBrush.Dispose();
}
pRenderPen.Dispose();
markerPath.Dispose();
transMatrix.Dispose();
}
private GraphicsPath GetPath(ISvgRenderer renderer, string text, IList <RectangleF> ranges, bool measureSpaces)
{
EnsureDictionaries();
RectangleF bounds;
SvgGlyph glyph;
SvgKern kern;
GraphicsPath path;
SvgGlyph prevGlyph = null;
Matrix scaleMatrix;
float xPos = 0;
var ascent = Ascent(renderer);
var result = new GraphicsPath();
if (string.IsNullOrEmpty(text))
{
return(result);
}
for (int i = 0; i < text.Length; i++)
{
if (!_glyphs.TryGetValue(text.Substring(i, 1), out glyph))
{
glyph = _font.Descendants().OfType <SvgMissingGlyph>().First();
}
if (prevGlyph != null && _kerning.TryGetValue(prevGlyph.GlyphName + "|" + glyph.GlyphName, out kern))
{
xPos -= kern.Kerning * _emScale;
}
path = (GraphicsPath)glyph.Path(renderer).Clone();
scaleMatrix = new Matrix();
scaleMatrix.Scale(_emScale, -1 * _emScale, MatrixOrder.Append);
scaleMatrix.Translate(xPos, ascent, MatrixOrder.Append);
path.Transform(scaleMatrix);
scaleMatrix.Dispose();
bounds = path.GetBounds();
if (ranges != null)
{
if (measureSpaces && bounds == RectangleF.Empty)
{
ranges.Add(new RectangleF(xPos, 0, glyph.HorizAdvX * _emScale, ascent));
}
else
{
ranges.Add(bounds);
}
}
if (path.PointCount > 0)
{
result.AddPath(path, false);
}
xPos += glyph.HorizAdvX * _emScale;
prevGlyph = glyph;
}
return(result);
}
