public static void SetDraggable(Image imagePreview, GrfImageWrapper wrapper)
{
imagePreview.Dispatch(delegate {
imagePreview.MouseMove += (e, a) => {
if (a.LeftButton == MouseButtonState.Pressed)
{
VirtualFileDataObject virtualFileDataObject = new VirtualFileDataObject();
string name = (string)imagePreview.Tag;
List <FileDescriptor> descriptors = new List <FileDescriptor> {
new FileDescriptor {
Name = name + (name.GetExtension() == null ? Imaging.GuessExtension(((BitmapSource)imagePreview.Source).Format) : ""),
Argument = wrapper,
StreamContents = (grfData, filePath, stream, argument) => {
GrfImageWrapper image = (GrfImageWrapper)argument;
if (image.Image != null)
{
GrfImage grfImage = image.Image;
string outputPath = TemporaryFilesManager.GetTemporaryFilePath("image_{0:0000}") + Imaging.GuessExtension(grfImage.GrfImageType);
grfImage.Save(outputPath);
var data = File.ReadAllBytes(outputPath);
stream.Write(data, 0, data.Length);
image.Image.Save(outputPath);
}
}
}
};
virtualFileDataObject.Source = DragAndDropSource.Other;
virtualFileDataObject.SetData(descriptors);
try {
DoDragDrop(null, virtualFileDataObject, DragDropEffects.Copy);
}
catch (Exception err) {
ErrorHandler.HandleException(err);
}
}
};
});
}