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);
}
}
private ImageSource GetBitmapSource(SvgImageElement element, WpfDrawingContext context)
{
ImageSource imageSource = this.GetBitmap(element, context);
if (imageSource == null)
{
return(imageSource);
}
SvgColorProfileElement colorProfile = (SvgColorProfileElement)element.ColorProfile;
if (colorProfile == null || !(imageSource is BitmapSource))
{
return(imageSource);
}
BitmapSource bitmapSource = (BitmapSource)imageSource;
BitmapFrame inputFrame = BitmapFrame.Create(bitmapSource);
SvgUriReference svgUri = colorProfile.UriReference;
Uri profileUri = new Uri(svgUri.AbsoluteUri);
ColorContext colorContext = new ColorContext(new Uri(svgUri.AbsoluteUri));
var colorContexts = new ReadOnlyCollection <ColorContext>(new ColorContext[] { colorContext });
BitmapFrame outputFrame = BitmapFrame.Create(inputFrame, null, null, colorContexts);
var bitmapImage = new BitmapImage();
var bitmapEncoder = new PngBitmapEncoder();
bitmapEncoder.Frames.Add(outputFrame);
using (var stream = new MemoryStream())
{
bitmapEncoder.Save(stream);
stream.Seek(0, SeekOrigin.Begin);
bitmapImage.BeginInit();
bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
bitmapImage.StreamSource = stream;
bitmapImage.EndInit();
}
// bitmapImage.Freeze();
return(bitmapImage);
}
private ImageSource GetBitmapSource(SvgImageElement element, WpfDrawingContext context)
{
ImageSource imageSource = this.GetBitmap(element, context);
if (imageSource == null)
{
return(imageSource);
}
SvgColorProfileElement colorProfile = (SvgColorProfileElement)element.ColorProfile;
if (colorProfile == null || !(imageSource is BitmapSource))
{
return(imageSource);
}
else
{
BitmapSource bitmapSource = (BitmapSource)imageSource;
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 ImageSource GetBitmap(SvgImageElement element, WpfDrawingContext context)
{
if (element.IsSvgImage)
{
return(null);
}
if (element.Href == null)
{
return(null);
}
if (!element.Href.AnimVal.StartsWith("data:", StringComparison.OrdinalIgnoreCase))
{
SvgUriReference svgUri = element.UriReference;
string absoluteUri = svgUri.AbsoluteUri;
if (string.IsNullOrWhiteSpace(absoluteUri))
{
return(null); // most likely, the image does not exist...
}
if (absoluteUri.StartsWith("#", StringComparison.OrdinalIgnoreCase))
{
Trace.WriteLine("Uri: " + absoluteUri); // image elements can't reference elements in an svg file
return(null);
}
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();
// imageSource.Freeze();
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();
// imageSource.Freeze();
return(imageSource);
}
}
else
{
WpfEmbeddedImageVisitor imageVisitor = context.ImageVisitor;
if (imageVisitor != null)
{
ImageSource visitorSource = imageVisitor.Visit(element, context);
if (visitorSource != null)
{
return(visitorSource);
}
}
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 = 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();
// imageSource.Freeze();
return(imageSource);
}
}
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;
}
}
public static Image GetBitmap(SvgImageElement element)
{
var comparer = StringComparison.OrdinalIgnoreCase;
if (!element.IsSvgImage)
{
if (!element.Href.AnimVal.StartsWith("data:", comparer))
{
SvgUriReference svgUri = element.UriReference;
Uri imageUri = new Uri(svgUri.AbsoluteUri);
if (imageUri.IsFile && File.Exists(imageUri.LocalPath))
{
return(Image.FromFile(imageUri.LocalPath, element.ColorProfile != null));
}
WebResponse resource = svgUri.ReferencedResource;
if (resource == null)
{
return(null);
}
Stream stream = resource.GetResponseStream();
if (stream == null)
{
return(null);
}
return(Image.FromStream(stream, element.ColorProfile != null));
}
string sURI = element.Href.AnimVal.Replace(" ", "").Trim();
sURI = sURI.Replace(@"\n", "");
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 = sURI.Substring(nComma + 1);
sContent = sContent.Replace('-', '+').Replace('_', '/');
sContent = sContent.PadRight(4 * ((sContent.Length + 3) / 4), '=');
byte[] bResult = Convert.FromBase64CharArray(sContent.ToCharArray(),
0, sContent.Length);
if (sMimeType.Equals("image/svg+xml", StringComparison.OrdinalIgnoreCase))
{
GdiGraphicsRenderer renderer = new GdiGraphicsRenderer(true, false);
var currentWindow = element.OwnerDocument.Window as SvgWindow;
var svgWindow = currentWindow.CreateOwnedWindow();
renderer.Window = svgWindow;
SvgDocument doc = svgWindow.CreateEmptySvgDocument();
bool isGZiped = sContent.StartsWith(GdiObject.GZipSignature, StringComparison.Ordinal);
if (isGZiped)
{
byte[] imageBytes = Convert.FromBase64CharArray(sContent.ToCharArray(),
0, sContent.Length);
using (var stream = new MemoryStream(imageBytes))
{
using (GZipStream zipStream = new GZipStream(stream, CompressionMode.Decompress))
{
doc.Load(zipStream);
}
}
}
else
{
var svgData = Convert.FromBase64String(Convert.ToBase64String(bResult));
var svgFragment = Encoding.ASCII.GetString(svgData);
doc.LoadXml(svgFragment);
}
svgWindow.Document = doc;
SvgSvgElement elm = (SvgSvgElement)doc.RootElement;
int winWidth = (int)elm.Width.BaseVal.Value;
int winHeight = (int)elm.Height.BaseVal.Value;
if (winWidth == 0 || winHeight == 0)
{
var size = elm.GetSize();
winWidth = (int)size.Width;
winHeight = (int)size.Height;
}
svgWindow.Resize(winWidth, winHeight);
renderer.Render(elm as SvgElement);
Image img = renderer.RasterImage;
return(img);
}
MemoryStream ms = new MemoryStream(bResult);
return(Image.FromStream(ms, element.ColorProfile != null));
}
return(null);
}
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.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
imageSource.UriSource = imageUri;
imageSource.EndInit();
return(imageSource);
}
return(null);
}
else
{
Stream stream = svgUri.ReferencedResource.GetResponseStream();
BitmapImage imageSource = new BitmapImage();
imageSource.BeginInit();
imageSource.CreateOptions = 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);
}
}
