public override ImageSource Visit(SvgImageElement element, WpfDrawingContext context)
{
string sURI = element.Href.AnimVal.Replace(" ", "");
int nColon = sURI.IndexOf(":", StringComparison.OrdinalIgnoreCase);
int nSemiColon = sURI.IndexOf(";", StringComparison.OrdinalIgnoreCase);
int nComma = sURI.IndexOf(",", StringComparison.OrdinalIgnoreCase);
string sMimeType = sURI.Substring(nColon + 1, nSemiColon - nColon - 1);
string sContent = SvgObject.RemoveWhitespace(sURI.Substring(nComma + 1));
byte[] imageBytes = Convert.FromBase64CharArray(sContent.ToCharArray(),
0, sContent.Length);
switch (sMimeType.Trim())
{
case "image/svg+xml":
using (var stream = new MemoryStream(imageBytes))
using (var reader = new FileSvgReader(context.Settings))
return(new DrawingImage(reader.Read(stream)));
default:
return(new EmbeddedBitmapSource(new MemoryStream(imageBytes)));
}
}
private ImageSource GetImage(SvgImageElement element, WpfDrawingContext context)
{
if (context != null && context.Settings.IncludeRuntime == false)
{
return(null);
}
var comparer = StringComparison.OrdinalIgnoreCase;
string sURI = element.Href.AnimVal.Replace(" ", string.Empty);
int nColon = sURI.IndexOf(":", comparer);
int nSemiColon = sURI.IndexOf(";", comparer);
int nComma = sURI.IndexOf(",", comparer);
string sMimeType = sURI.Substring(nColon + 1, nSemiColon - nColon - 1);
string sContent = SvgObject.RemoveWhitespace(sURI.Substring(nComma + 1));
byte[] imageBytes = Convert.FromBase64CharArray(sContent.ToCharArray(), 0, sContent.Length);
bool isGZiped = sContent.StartsWith(SvgConstants.GZipSignature, StringComparison.Ordinal);
bool isSvgOrXml = sContent.StartsWith(SvgConstants.SvgSignature, StringComparison.Ordinal) ||
sContent.StartsWith(SvgConstants.XmlSignature, StringComparison.Ordinal);
if (string.Equals(sMimeType, "image/svg+xml", comparer) || isSvgOrXml)
{
if (isGZiped)
{
using (var stream = new MemoryStream(imageBytes))
{
using (GZipStream zipStream = new GZipStream(stream, CompressionMode.Decompress))
{
using (var reader = new FileSvgReader(context.Settings, true))
{
return(new DrawingImage(reader.Read(zipStream)));
}
}
}
}
else
{
using (var stream = new MemoryStream(imageBytes))
{
using (var reader = new FileSvgReader(context.Settings, true))
{
return(new DrawingImage(reader.Read(stream)));
}
}
}
}
return(new EmbeddedBitmapSource(new MemoryStream(imageBytes)));
}
private ImageSource GetImage(SvgImageElement element, WpfDrawingContext context)
{
bool isSavingImages = _saveImages;
string imagesDir = _saveDirectory;
if (context != null && context.Settings.IncludeRuntime == false)
{
isSavingImages = true;
if (string.IsNullOrWhiteSpace(_saveDirectory) ||
Directory.Exists(_saveDirectory) == false)
{
var assembly = Assembly.GetExecutingAssembly();
if (assembly != null)
{
imagesDir = Path.GetDirectoryName(assembly.Location);
}
}
}
var comparer = StringComparison.OrdinalIgnoreCase;
string sURI = element.Href.AnimVal.Replace(" ", "");
int nColon = sURI.IndexOf(":", comparer);
int nSemiColon = sURI.IndexOf(";", comparer);
int nComma = sURI.IndexOf(",", comparer);
string sMimeType = sURI.Substring(nColon + 1, nSemiColon - nColon - 1);
string sContent = SvgObject.RemoveWhitespace(sURI.Substring(nComma + 1));
byte[] imageBytes = Convert.FromBase64CharArray(sContent.ToCharArray(),
0, sContent.Length);
bool isGZiped = sContent.StartsWith(SvgObject.GZipSignature, StringComparison.Ordinal);
if (string.Equals(sMimeType, "image/svg+xml", comparer))
{
if (isGZiped)
{
using (var stream = new MemoryStream(imageBytes))
{
using (GZipStream zipStream = new GZipStream(stream, CompressionMode.Decompress))
{
using (var reader = new FileSvgReader(context.Settings))
return(new DrawingImage(reader.Read(zipStream)));
}
}
}
else
{
using (var stream = new MemoryStream(imageBytes))
{
using (var reader = new FileSvgReader(context.Settings))
return(new DrawingImage(reader.Read(stream)));
}
}
}
BitmapImage imageSource = new BitmapImage();
imageSource.BeginInit();
imageSource.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
imageSource.StreamSource = new MemoryStream(imageBytes);
imageSource.EndInit();
imageSource.Freeze();
if (isSavingImages && !string.IsNullOrWhiteSpace(imagesDir) &&
Directory.Exists(imagesDir))
{
var imagePath = this.GetImagePath(imagesDir);
BitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(imageSource));
using (var fileStream = new FileStream(imagePath, FileMode.Create))
{
encoder.Save(fileStream);
}
BitmapImage savedSource = new BitmapImage();
savedSource.BeginInit();
savedSource.CacheOption = BitmapCacheOption.OnLoad;
savedSource.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
savedSource.UriSource = new Uri(imagePath);
savedSource.EndInit();
savedSource.Freeze();
return(savedSource);
}
return(imageSource);
}
/// <summary>
/// This converts the SVG resource specified by the Uri to <see cref="DrawingGroup"/>.
/// </summary>
/// <param name="svgSource">A <see cref="Uri"/> specifying the source of the SVG resource.</param>
/// <returns>A <see cref="DrawingGroup"/> of the converted SVG resource.</returns>
protected virtual DrawingGroup GetDrawing(Uri svgSource)
{
string scheme = null;
// A little hack to display preview in design mode: The design mode Uri is not absolute.
bool designTime = DesignerProperties.GetIsInDesignMode(new DependencyObject());
if (designTime && svgSource.IsAbsoluteUri == false)
{
scheme = "pack";
}
else
{
scheme = svgSource.Scheme;
}
if (string.IsNullOrWhiteSpace(scheme))
{
return(null);
}
WpfDrawingSettings settings = new WpfDrawingSettings();
settings.IncludeRuntime = _includeRuntime;
settings.TextAsGeometry = _textAsGeometry;
settings.OptimizePath = _optimizePath;
if (_culture != null)
{
settings.CultureInfo = _culture;
}
switch (scheme)
{
case "file":
//case "ftp":
case "https":
case "http":
using (FileSvgReader reader = new FileSvgReader(settings))
{
DrawingGroup drawGroup = reader.Read(svgSource);
if (drawGroup != null)
{
return(drawGroup);
}
}
break;
case "pack":
StreamResourceInfo svgStreamInfo = null;
if (svgSource.ToString().IndexOf("siteoforigin", StringComparison.OrdinalIgnoreCase) >= 0)
{
svgStreamInfo = Application.GetRemoteStream(svgSource);
}
else
{
svgStreamInfo = Application.GetResourceStream(svgSource);
}
Stream svgStream = (svgStreamInfo != null) ? svgStreamInfo.Stream : null;
if (svgStream != null)
{
string fileExt = Path.GetExtension(svgSource.ToString());
bool isCompressed = !string.IsNullOrWhiteSpace(fileExt) &&
string.Equals(fileExt, ".svgz", StringComparison.OrdinalIgnoreCase);
if (isCompressed)
{
using (svgStream)
{
using (var zipStream = new GZipStream(svgStream, CompressionMode.Decompress))
{
using (FileSvgReader reader = new FileSvgReader(settings))
{
DrawingGroup drawGroup = reader.Read(zipStream);
if (drawGroup != null)
{
return(drawGroup);
}
}
}
}
}
else
{
using (svgStream)
{
using (FileSvgReader reader = new FileSvgReader(settings))
{
DrawingGroup drawGroup = reader.Read(svgStream);
if (drawGroup != null)
{
return(drawGroup);
}
}
}
}
}
break;
case "data":
var sourceData = svgSource.OriginalString.Replace(" ", "");
int nColon = sourceData.IndexOf(":", StringComparison.OrdinalIgnoreCase);
int nSemiColon = sourceData.IndexOf(";", StringComparison.OrdinalIgnoreCase);
int nComma = sourceData.IndexOf(",", StringComparison.OrdinalIgnoreCase);
string sMimeType = sourceData.Substring(nColon + 1, nSemiColon - nColon - 1);
string sEncoding = sourceData.Substring(nSemiColon + 1, nComma - nSemiColon - 1);
if (string.Equals(sMimeType.Trim(), "image/svg+xml", StringComparison.OrdinalIgnoreCase) &&
string.Equals(sEncoding.Trim(), "base64", StringComparison.OrdinalIgnoreCase))
{
string sContent = SvgObject.RemoveWhitespace(sourceData.Substring(nComma + 1));
byte[] imageBytes = Convert.FromBase64CharArray(sContent.ToCharArray(),
0, sContent.Length);
using (var stream = new MemoryStream(imageBytes))
{
using (var reader = new FileSvgReader(settings))
{
DrawingGroup drawGroup = reader.Read(stream);
if (drawGroup != null)
{
return(drawGroup);
}
}
}
}
break;
}
return(null);
}
/// <summary>
/// Performs the conversion of a valid SVG source file to the <see cref="DrawingGroup"/>.
/// </summary>
/// <param name="svgSource">A <see cref="Uri"/> defining the path to the SVG source.</param>
/// <param name="settings">
/// This specifies the settings used by the rendering or drawing engine.
/// If this is <see langword="null"/>, the default settings is used.
/// </param>
/// <returns>
/// This returns <see cref="DrawingGroup"/> if successful; otherwise, it
/// returns <see langword="null"/>.
/// </returns>
protected virtual DrawingGroup CreateDrawing(Uri svgSource, WpfDrawingSettings settings)
{
if (svgSource == null)
{
return(null);
}
string scheme = svgSource.Scheme;
if (string.IsNullOrWhiteSpace(scheme))
{
return(null);
}
var comparer = StringComparison.OrdinalIgnoreCase;
DrawingGroup drawing = null;
switch (scheme)
{
case "file":
//case "ftp":
case "https":
case "http":
using (FileSvgReader reader = new FileSvgReader(settings))
{
drawing = reader.Read(svgSource);
}
break;
case "pack":
StreamResourceInfo svgStreamInfo = null;
if (svgSource.ToString().IndexOf("siteoforigin", comparer) >= 0)
{
svgStreamInfo = Application.GetRemoteStream(svgSource);
}
else
{
svgStreamInfo = Application.GetResourceStream(svgSource);
}
Stream svgStream = (svgStreamInfo != null) ? svgStreamInfo.Stream : null;
if (svgStream != null)
{
string fileExt = Path.GetExtension(svgSource.ToString());
bool isCompressed = !string.IsNullOrWhiteSpace(fileExt) &&
string.Equals(fileExt, ".svgz", comparer);
if (isCompressed)
{
using (svgStream)
{
using (GZipStream zipStream = new GZipStream(svgStream, CompressionMode.Decompress))
{
using (FileSvgReader reader = new FileSvgReader(settings))
{
drawing = reader.Read(zipStream);
}
}
}
}
else
{
using (svgStream)
{
using (FileSvgReader reader = new FileSvgReader(settings))
{
drawing = reader.Read(svgStream);
}
}
}
}
break;
case "data":
var sourceData = svgSource.OriginalString.Replace(" ", "");
int nColon = sourceData.IndexOf(":", comparer);
int nSemiColon = sourceData.IndexOf(";", comparer);
int nComma = sourceData.IndexOf(",", comparer);
string sMimeType = sourceData.Substring(nColon + 1, nSemiColon - nColon - 1);
string sEncoding = sourceData.Substring(nSemiColon + 1, nComma - nSemiColon - 1);
if (string.Equals(sMimeType.Trim(), "image/svg+xml", comparer) &&
string.Equals(sEncoding.Trim(), "base64", comparer))
{
string sContent = SvgObject.RemoveWhitespace(sourceData.Substring(nComma + 1));
byte[] imageBytes = Convert.FromBase64CharArray(sContent.ToCharArray(),
0, sContent.Length);
using (var stream = new MemoryStream(imageBytes))
{
using (var reader = new FileSvgReader(settings))
{
drawing = reader.Read(stream);
}
}
}
break;
}
return(drawing);
}
private ImageSource GetImage(SvgImageElement element, WpfDrawingContext context)
{
bool isSavingImages = _saveImages;
string imagesDir = _saveDirectory;
if (context != null && context.Settings.IncludeRuntime == false)
{
isSavingImages = true;
if (string.IsNullOrWhiteSpace(_saveDirectory) ||
Directory.Exists(_saveDirectory) == false)
{
var assembly = Assembly.GetExecutingAssembly();
if (assembly != null)
{
imagesDir = PathUtils.Combine(assembly);
}
}
}
var comparer = StringComparison.OrdinalIgnoreCase;
string sURI = element.Href.AnimVal.Replace(" ", string.Empty);
int nColon = sURI.IndexOf(":", comparer);
int nSemiColon = sURI.IndexOf(";", comparer);
int nComma = sURI.IndexOf(",", comparer);
string sMimeType = sURI.Substring(nColon + 1, nSemiColon - nColon - 1);
var sContent = SvgObject.RemoveWhitespace(sURI.Substring(nComma + 1));
var imageBytes = Convert.FromBase64CharArray(sContent.ToCharArray(), 0, sContent.Length);
bool isGZiped = sContent.StartsWith(SvgConstants.GZipSignature, StringComparison.Ordinal);
bool isSvgOrXml = sContent.StartsWith(SvgConstants.SvgSignature, StringComparison.Ordinal) ||
sContent.StartsWith(SvgConstants.XmlSignature, StringComparison.Ordinal);
if (string.Equals(sMimeType, "image/svg+xml", comparer) || isSvgOrXml)
{
if (isGZiped)
{
using (var stream = new MemoryStream(imageBytes))
{
using (GZipStream zipStream = new GZipStream(stream, CompressionMode.Decompress))
{
using (var reader = new FileSvgReader(context.Settings, true))
{
return(new DrawingImage(reader.Read(zipStream)));
}
}
}
}
else
{
using (var stream = new MemoryStream(imageBytes))
{
using (var reader = new FileSvgReader(context.Settings, true))
{
return(new DrawingImage(reader.Read(stream)));
}
}
}
}
var memStream = new MemoryStream(imageBytes);
BitmapImage imageSource = new BitmapImage();
imageSource.BeginInit();
imageSource.StreamSource = memStream;
imageSource.CacheOption = BitmapCacheOption.OnLoad;
imageSource.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
imageSource.EndInit();
string imagePath = null;
if (isSavingImages && !string.IsNullOrWhiteSpace(imagesDir) && Directory.Exists(imagesDir))
{
imagePath = this.GetImagePath(imagesDir);
BitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(imageSource));
using (var fileStream = new FileStream(imagePath, FileMode.Create))
{
encoder.Save(fileStream);
}
imageSource.CreateOptions = BitmapCreateOptions.PreservePixelFormat | BitmapCreateOptions.IgnoreImageCache;
imageSource.UriSource = new Uri(imagePath);
//imageSource.StreamSource.Dispose();
//imageSource = null;
//BitmapImage savedSource = new BitmapImage();
//savedSource.BeginInit();
//savedSource.CacheOption = BitmapCacheOption.None;
//savedSource.CreateOptions = BitmapCreateOptions.PreservePixelFormat | BitmapCreateOptions.IgnoreImageCache;
//savedSource.UriSource = new Uri(imagePath);
//savedSource.EndInit();
//savedSource.Freeze();
//if (_imageCreated != null)
//{
// var eventArgs = new EmbeddedImageSerializerArgs(imagePath, savedSource);
// _imageCreated.Invoke(this, eventArgs);
//}
//return savedSource;
}
else if (_converterFallback)
{
//if (_imageCreated != null)
//{
// var eventArgs = new EmbeddedImageSerializerArgs(imagePath, imageSource);
// _imageCreated.Invoke(this, eventArgs);
//}
return(new EmbeddedBitmapSource(memStream, imageSource));
}
if (_imageCreated != null)
{
var eventArgs = new EmbeddedImageSerializerArgs(imagePath, imageSource);
_imageCreated.Invoke(this, eventArgs);
}
imageSource.Freeze();
return(imageSource);
}