public override void Render(GdiGraphicsRenderer renderer)
{
base.Render(renderer);
var graphics = renderer.GdiGraphics;
SvgImageElement iElement = (SvgImageElement)_svgElement;
ImageAttributes imageAttributes = new ImageAttributes();
float opacityValue = -1;
string opacity = iElement.GetAttribute("opacity");
if (string.IsNullOrWhiteSpace(opacity))
{
opacity = iElement.GetPropertyValue("opacity");
}
if (!string.IsNullOrWhiteSpace(opacity))
{
opacityValue = (float)SvgNumber.ParseNumber(opacity);
opacityValue = Math.Min(opacityValue, 1);
opacityValue = Math.Max(opacityValue, 0);
}
if (opacityValue >= 0 && opacityValue < 1)
{
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.Matrix00 = 1.00f; // Red
colorMatrix.Matrix11 = 1.00f; // Green
colorMatrix.Matrix22 = 1.00f; // Blue
colorMatrix.Matrix33 = opacityValue; // alpha
colorMatrix.Matrix44 = 1.00f; // w
imageAttributes.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
}
float width = (float)iElement.Width.AnimVal.Value;
float height = (float)iElement.Height.AnimVal.Value;
RectangleF destRect = new RectangleF((float)iElement.X.AnimVal.Value,
(float)iElement.Y.AnimVal.Value, (float)iElement.Width.AnimVal.Value,
(float)iElement.Height.AnimVal.Value);
RectangleF srcRect;
RectangleF clipRect = destRect;
// var container = graphics.BeginContainer();
graphics.SetClip(new Region(clipRect), CombineMode.Intersect);
Image image = null;
SvgWindow svgWnd = null;
if (iElement.IsSvgImage)
{
svgWnd = GetSvgWindow(graphics);
if (width > 0 && height > 0)
{
srcRect = new RectangleF(0, 0, width, height);
}
else
{
SvgSvgElement svgEl = (SvgSvgElement)svgWnd.Document.RootElement;
SvgSizeF size = svgEl.GetSize();
srcRect = new RectangleF(new PointF(0, 0), new SizeF(size.Width, size.Height));
}
}
else
{
image = GetBitmap(iElement);
if (image == null)
{
return;
}
srcRect = new RectangleF(0, 0, image.Width, image.Height);
}
ISvgAnimatedPreserveAspectRatio animatedAspectRatio = iElement.PreserveAspectRatio;
if (animatedAspectRatio != null && animatedAspectRatio.AnimVal != null)
{
SvgPreserveAspectRatio aspectRatio = animatedAspectRatio.AnimVal as SvgPreserveAspectRatio;
SvgPreserveAspectRatioType aspectRatioType =
(aspectRatio != null) ? aspectRatio.Align : SvgPreserveAspectRatioType.Unknown;
if (aspectRatio != null && aspectRatioType != SvgPreserveAspectRatioType.None &&
aspectRatioType != SvgPreserveAspectRatioType.Unknown)
{
var fScaleX = destRect.Width / srcRect.Width;
var fScaleY = destRect.Height / srcRect.Height;
var xOffset = 0.0f;
var yOffset = 0.0f;
SvgMeetOrSlice meetOrSlice = aspectRatio.MeetOrSlice;
if (meetOrSlice == SvgMeetOrSlice.Slice)
{
fScaleX = Math.Max(fScaleX, fScaleY);
fScaleY = Math.Max(fScaleX, fScaleY);
}
else
{
fScaleX = Math.Min(fScaleX, fScaleY);
fScaleY = Math.Min(fScaleX, fScaleY);
}
switch (aspectRatioType)
{
case SvgPreserveAspectRatioType.XMinYMin:
break;
case SvgPreserveAspectRatioType.XMidYMin:
xOffset = (destRect.Width - srcRect.Width * fScaleX) / 2;
break;
case SvgPreserveAspectRatioType.XMaxYMin:
xOffset = (destRect.Width - srcRect.Width * fScaleX);
break;
case SvgPreserveAspectRatioType.XMinYMid:
yOffset = (destRect.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatioType.XMidYMid:
xOffset = (destRect.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destRect.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatioType.XMaxYMid:
xOffset = (destRect.Width - srcRect.Width * fScaleX);
yOffset = (destRect.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatioType.XMinYMax:
yOffset = (destRect.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatioType.XMidYMax:
xOffset = (destRect.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destRect.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatioType.XMaxYMax:
xOffset = (destRect.Width - srcRect.Width * fScaleX);
yOffset = (destRect.Height - srcRect.Height * fScaleY);
break;
}
destRect = new RectangleF(destRect.X + xOffset, destRect.Y + yOffset,
srcRect.Width * fScaleX, srcRect.Height * fScaleY);
}
if (image != null)
{
SvgColorProfileElement colorProfile = (SvgColorProfileElement)iElement.ColorProfile;
if (colorProfile != null)
{
SvgUriReference svgUri = colorProfile.UriReference;
Uri profileUri = new Uri(svgUri.AbsoluteUri);
imageAttributes.SetOutputChannelColorProfile(profileUri.LocalPath, ColorAdjustType.Default);
}
graphics.DrawImage(this, image, destRect, srcRect, GraphicsUnit.Pixel, imageAttributes);
image.Dispose();
image = null;
}
else if (iElement.IsSvgImage && svgWnd != null)
{
svgWnd.Resize((int)srcRect.Width, (int)srcRect.Height);
var currOffset = new PointF(graphics.Transform.OffsetX, graphics.Transform.OffsetY);
if (!currOffset.IsEmpty)
{
graphics.TranslateTransform(-currOffset.X, -currOffset.Y);
}
graphics.ScaleTransform(destRect.Width / srcRect.Width, destRect.Height / srcRect.Height);
if (!currOffset.IsEmpty)
{
graphics.TranslateTransform(currOffset.X + destRect.X, currOffset.Y + destRect.Y);
}
_embeddedRenderer.Render(svgWnd.Document);
}
graphics.ResetClip();
// graphics.EndContainer(container);
}
if (_embeddedRenderer != null)
{
_embeddedRenderer.GdiGraphics = null;
_embeddedRenderer.Dispose();
_embeddedRenderer = null;
}
if (imageAttributes != null)
{
imageAttributes.Dispose();
imageAttributes = null;
}
}