public override BitmapSource Visit(SvgImageElement element,
WpfDrawingContext context)
{
string sURI = element.Href.AnimVal;
int nColon = sURI.IndexOf(":");
int nSemiColon = sURI.IndexOf(";");
int nComma = sURI.IndexOf(",");
string sMimeType = sURI.Substring(nColon + 1, nSemiColon - nColon - 1);
string sContent = sURI.Substring(nComma + 1);
byte[] imageBytes = Convert.FromBase64CharArray(sContent.ToCharArray(),
0, sContent.Length);
//BitmapImage imageSource = new BitmapImage();
//imageSource.BeginInit();
//imageSource.StreamSource = new MemoryStream(imageBytes);
//imageSource.EndInit();
return new EmbeddedBitmapSource(new MemoryStream(imageBytes));
}
private Image GetBitmap(SvgImageElement element)
{
if (!element.IsSvgImage)
{
if (!element.Href.AnimVal.StartsWith("data:"))
{
SvgUriReference svgUri = element.UriReference;
Uri imageUri = new Uri(svgUri.AbsoluteUri);
if (imageUri.IsFile && File.Exists(imageUri.LocalPath))
{
return Bitmap.FromFile(imageUri.LocalPath);
}
WebResponse resource = svgUri.ReferencedResource;
if (resource == null)
{
return null;
}
Stream stream = resource.GetResponseStream();
if (stream == null)
{
return null;
}
return Bitmap.FromStream(stream);
}
else
{
string sURI = element.Href.AnimVal;
int nColon = sURI.IndexOf(":");
int nSemiColon = sURI.IndexOf(";");
int nComma = sURI.IndexOf(",");
string sMimeType = sURI.Substring(nColon + 1, nSemiColon - nColon - 1);
string sContent = sURI.Substring(nComma + 1);
byte[] bResult = Convert.FromBase64CharArray(sContent.ToCharArray(),
0, sContent.Length);
MemoryStream ms = new MemoryStream(bResult);
return Bitmap.FromStream(ms);
}
}
else
{
return null;
}
}
public abstract BitmapSource Visit(SvgImageElement element,
WpfDrawingContext context);
private ImageSource GetBitmapSource(SvgImageElement element, WpfDrawingContext context)
{
BitmapSource bitmapSource = this.GetBitmap(element, context);
if (bitmapSource == null)
{
return bitmapSource;
}
SvgColorProfileElement colorProfile = (SvgColorProfileElement)element.ColorProfile;
if (colorProfile == null)
{
return bitmapSource;
}
else
{
BitmapFrame bitmapSourceFrame = BitmapFrame.Create(bitmapSource);
ColorContext sourceColorContext = null;
IList<ColorContext> colorContexts = bitmapSourceFrame.ColorContexts;
if (colorContexts != null && colorContexts.Count != 0)
{
sourceColorContext = colorContexts[0];
}
else
{
sourceColorContext = new ColorContext(bitmapSource.Format);
//sourceColorContext = new ColorContext(PixelFormats.Default);
}
SvgUriReference svgUri = colorProfile.UriReference;
Uri profileUri = new Uri(svgUri.AbsoluteUri);
ColorContext destColorContext = new ColorContext(profileUri);
ColorConvertedBitmap convertedBitmap = new ColorConvertedBitmap(bitmapSource,
sourceColorContext, destColorContext, bitmapSource.Format);
return convertedBitmap;
}
}
private BitmapSource GetBitmap(SvgImageElement element, WpfDrawingContext context)
{
if (element.IsSvgImage)
{
return null;
}
if (!element.Href.AnimVal.StartsWith("data:"))
{
SvgUriReference svgUri = element.UriReference;
string absoluteUri = svgUri.AbsoluteUri;
if (String.IsNullOrEmpty(absoluteUri))
{
return null; // most likely, the image does not exist...
}
Uri imageUri = new Uri(svgUri.AbsoluteUri);
if (imageUri.IsFile)
{
if (File.Exists(imageUri.LocalPath))
{
BitmapImage imageSource = new BitmapImage();
imageSource.BeginInit();
imageSource.CacheOption = BitmapCacheOption.OnLoad;
imageSource.CreateOptions = BitmapCreateOptions.IgnoreImageCache
| BitmapCreateOptions.PreservePixelFormat;
imageSource.UriSource = imageUri;
imageSource.EndInit();
return imageSource;
}
return null;
}
else
{
Stream stream = svgUri.ReferencedResource.GetResponseStream();
BitmapImage imageSource = new BitmapImage();
imageSource.BeginInit();
imageSource.CacheOption = BitmapCacheOption.OnLoad;
imageSource.CreateOptions = BitmapCreateOptions.IgnoreImageCache
| BitmapCreateOptions.PreservePixelFormat;
imageSource.StreamSource = stream;
imageSource.EndInit();
return imageSource;
}
}
else
{
WpfEmbeddedImageVisitor imageVisitor = context.ImageVisitor;
if (imageVisitor != null)
{
BitmapSource visitorSource = imageVisitor.Visit(element, context);
if (visitorSource != null)
{
return visitorSource;
}
}
string sURI = element.Href.AnimVal;
int nColon = sURI.IndexOf(":");
int nSemiColon = sURI.IndexOf(";");
int nComma = sURI.IndexOf(",");
string sMimeType = sURI.Substring(nColon + 1, nSemiColon - nColon - 1);
string sContent = sURI.Substring(nComma + 1);
byte[] bResult = Convert.FromBase64CharArray(sContent.ToCharArray(),
0, sContent.Length);
BitmapImage imageSource = new BitmapImage();
imageSource.BeginInit();
imageSource.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
imageSource.StreamSource = new MemoryStream(bResult);
imageSource.EndInit();
return imageSource;
}
}
