public void LoadDiagrams(string fileName)
{
if (string.IsNullOrWhiteSpace(fileName) || !File.Exists(fileName))
{
return;
}
this.UnloadDiagrams();
string fileExt = IoPath.GetExtension(fileName);
Cursor curCursor = this.Cursor;
this.Cursor = Cursors.Wait;
try
{
object xamlObject = null;
if (string.Equals(fileExt, ".xaml", StringComparison.OrdinalIgnoreCase))
{
using (XmlReader xmlReader = XmlReader.Create(new StreamReader(fileName)))
{
xamlObject = XamlReader.Load(xmlReader);
}
}
else if (string.Equals(fileExt, ".zaml", StringComparison.OrdinalIgnoreCase))
{
using (FileStream fileStream = File.OpenRead(fileName))
{
using (GZipStream zipStream =
new GZipStream(fileStream, CompressionMode.Decompress))
{
xamlObject = XamlReader.Load(zipStream);
}
}
}
if (xamlObject is SvgImage)
{
SvgImage imageDrawing = (SvgImage)xamlObject;
RenderDiagrams(imageDrawing);
}
else if (xamlObject is DrawingGroup)
{
DrawingGroup groupDrawing = (DrawingGroup)xamlObject;
RenderDiagrams(groupDrawing);
}
}
finally
{
this.Cursor = curCursor;
}
}
public void RenderDiagrams(SvgImage image)
{
DrawingImage drawingImage = image.Source as DrawingImage;
if (drawingImage == null)
{
return;
}
DrawingGroup renderedGroup = drawingImage.Drawing as DrawingGroup;
if (renderedGroup != null)
{
this.RenderDiagrams(renderedGroup);
}
}
public void RenderDiagrams(SvgImage image)
{
DrawingImage drawingImage = image.Source as DrawingImage;
if (drawingImage == null)
{
return;
}
DrawingGroup renderedGroup = drawingImage.Drawing as DrawingGroup;
if (renderedGroup != null)
{
this.RenderDiagrams(renderedGroup);
}
}
/// <summary>
/// 创建SVG图像
/// </summary>
/// <param name="svgStream">SVG文件流</param>
/// <returns>SVG图像</returns>
public static SvgImage CreateSvgImage(Stream svgStream)
{
var svgImage = new SvgImage();
var drawingImage = (DrawingImage)null;
var svgReader = new FileSvgReader(null);
svgReader.Read(svgStream);
drawingImage = new DrawingImage(svgReader.Drawing);
svgImage.Source=drawingImage;
svgImage.Stretch = Stretch.Fill;
return svgImage;
}
