private static BitmapEncoder GetBitmapEncoder(ImageContentType imageContentType)
{
BitmapEncoder bitmapEncoder;
switch (imageContentType)
{
case ImageContentType.ImageBmpContentType:
bitmapEncoder = new BmpBitmapEncoder();
break;
case ImageContentType.ImageGifContentType:
bitmapEncoder = new GifBitmapEncoder();
break;
case ImageContentType.ImageJpegContentType:
bitmapEncoder = new JpegBitmapEncoder();
break;
case ImageContentType.ImageTiffContentType:
bitmapEncoder = new TiffBitmapEncoder();
break;
case ImageContentType.ImagePngContentType:
bitmapEncoder = new PngBitmapEncoder();
break;
default:
bitmapEncoder = new PngBitmapEncoder();
break;
}
return bitmapEncoder;
}
// Generates a image part Uri for the given image index
private static string GetImageName(int imageIndex, ImageContentType imageContentType)
{
string imageFileExtension = GetImageFileExtension(imageContentType);
return XamlImageName + (imageIndex + 1) + imageFileExtension;
}
private static string GetImageContentName(ImageContentType imageContentType)
{
return ImageContentTypeName[(int)imageContentType];
}
// Returns a file extension corresponding to a given imageContentType
private static string GetImageFileExtension(ImageContentType imageContentType)
{
return ImageFileExtension[(int)imageContentType];
}
internal static Stream SaveImage(BitmapSource bitmapSource, ImageContentType imageContentType)
{
MemoryStream stream = new MemoryStream();
// Create the wpf package in the stream
WpfPayload wpfPayload = new WpfPayload();
using (wpfPayload.CreatePackage(stream))
{
PackagePart xamlEntryPart = wpfPayload.CreateWpfEntryPart();
Stream xamlPartStream = xamlEntryPart.GetStream();
using (xamlPartStream)
{
// int imageIndex = 0;
imageIndex++;
string imageReference = GetImageReference(GetImageName(imageIndex, imageContentType));
StreamWriter xamlPartWriter = new StreamWriter(xamlPartStream);
using (xamlPartWriter)
{
string xamlText =
"<Span xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\">" +
"<InlineUIContainer><Image " +
"Width=\"" +
bitmapSource.Width + "\" " +
"Height=\"" +
bitmapSource.Height + "\" " +
"><Image.Source><BitmapImage CacheOption=\"OnLoad\" UriSource=\"" +
imageReference +
"\"/></Image.Source></Image></InlineUIContainer></Span>";
xamlPartWriter.Write(xamlText);
}
wpfPayload.CreateImagePart(xamlEntryPart, bitmapSource, imageContentType, imageIndex);
}
}
return stream;
}
private void CreateImagePart(PackagePart sourcePart, BitmapSource imageSource, ImageContentType imageContentType, int imageIndex)
{
// Generate a new unique image part name
string imagePartUriString = GetImageName(imageIndex, imageContentType);
// Define an image part uri
Uri imagePartUri = new Uri(XamlPayloadDirectory + imagePartUriString, UriKind.Relative);
// Create a part for the image
PackagePart imagePart = _package.CreatePart(imagePartUri, GetImageContentName(imageContentType), CompressionOption.NotCompressed);
// Create the relationship referring from the enrty part to the image part
PackageRelationship componentRelationship = sourcePart.CreateRelationship(imagePartUri, TargetMode.Internal, XamlRelationshipFromXamlPartToComponentPart);
// Encode the image data
BitmapEncoder bitmapEncoder = GetBitmapEncoder(imageContentType);
bitmapEncoder.Frames.Add(BitmapFrame.Create(imageSource));
// Save encoded image data into the image part in the package
Stream imageStream = imagePart.GetStream();
using (imageStream)
{
bitmapEncoder.Save(imageStream);
}
}
/// <summary>
/// Commands the insert image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="contnt_type">The contnt_type.</param>
/// <param name="stretch">The stretch.</param>
public void cmdInsertImage(
BitmapSource image,
ImageContentType contnt_type = ImageContentType.ImagePngContentType,
Stretch stretch = Stretch.Uniform)
{
Span element = YATEHelper.GetImage(image, contnt_type, stretch);
if (element == null) return;
Image i = YATEHelper.ImageFromSpan(element);
YATEHelper.AdjustWidth(i, this.PageWidth);
i.Stretch = stretch;
cmdInsertInline(element as Span);
}
