Creating a multi-page Tiff from a document

Aspose.Imaging Product Family
1

Hello, I want to create a multi-page tiff from a word (excel, powerpoint etc) document by given start and end page number. My aim is to create thumbnails.


I can create one page thumnail but as i see, sample code does not support multi-page tiff from a document.

              var doc = new Document(thumbnail.OriginalFileContent.ConvertToMemoryStream());

// Render Word document to an image stream

ImageSaveOptions options = new ImageSaveOptions(SaveFormat.Tiff);

if (thumbnail.AllPages)

{

options.PageIndex = 0;

options.PageCount = doc.PageCount;

}

else

{

options.PageIndex = thumbnail.StartPage;

options.PageCount = thumbnail.EndPage- thumbnail.StartPage;

}

          options.TiffCompression= <span style="color:#2b91af;">TiffCompression</span>.Ccitt4;<span style="color:green;">// (TiffCompression.CCITT_4);</span>
          options.Resolution=160;<span style="color:green;">// .setResolution(160);</span>
          
          options.ColorMode = thumbnail.IsColored? <span style="color:#2b91af;">ColorMode</span>.Normal : <span style="color:#2b91af;">ColorMode</span>.Grayscale;

          <span style="color:#2b91af;">MemoryStream</span> imgStream = <span style="color:blue;">new</span> <span style="color:#2b91af;">MemoryStream</span>();
          doc.Save(imgStream, options);</pre><pre style="font-family: Consolas; font-size: 13px; background: white;"><br></pre><pre style="font-family: Consolas; font-size: 13px; background: white;">Until here imgstream object holds multipage when i save as a tiff but when i want to resize it</pre><pre style="font-family: Consolas; font-size: 13px; background: white;"><br></pre><pre style="font-family: Consolas; font-size: 13px; background: white;"><pre style="font-family: Consolas; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="color:#2b91af;">              Document</span> temp = <span style="color:blue;">new</span> <span style="color:#2b91af;">Document</span>();
          <span style="color:#2b91af;">DocumentBuilder</span> builder = <span style="color:blue;">new</span> <span style="color:#2b91af;">DocumentBuilder</span>(temp);
          <span style="color:#2b91af;">Shape</span> img = builder.InsertImage(imgStream);
          
          <span style="color:green;">// Resize the image as per your needs</span>
          img.Width = thumbnail.Width;
          img.Height = thumbnail.Height;
          
          <span style="color:green;">// Save the individual image to disk using ShapeRenderer class</span>
          <span style="color:#2b91af;">ShapeRenderer</span> renderer = img.GetShapeRenderer();
          
          <span style="color:blue;">using</span> (<span style="color:blue;">var</span> outStream = <span style="color:blue;">new</span> <span style="color:#2b91af;">MemoryStream</span>())
          {
              
              renderer.Save(outStream, <span style="color:blue;">new</span> <span style="color:#2b91af;">ImageSaveOptions</span>(<span style="color:#2b91af;">SaveFormat</span>.Tiff));
              result.Thumbnail = outStream.ToArray();
              result.Result = <span style="color:#2b91af;">Result</span>.Successful;
              result.Message = <span style="color:#a31515;">$</span><span style="color:#a31515;">"A thumbnail has been successfully created"</span>;
          }</pre><pre style="font-family: Consolas; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><br></pre><pre style="font-family: Consolas; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">img Shape object holds only one page from the stream and it gives me the first page. </pre><pre style="font-family: Consolas; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Well how i can solve this problem?</pre><pre style="font-family: Consolas; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><br></pre></pre></div>
2

As I understand from this reply


Doc to Tiff conversion

my code was supposed to worked. Because if you give pageindex and pagecount, this shape object should create a multi-page tiff but it seems it only takes first page of the pages. Maybe there is a bug or i am missing something…

Maybe there should be an “InsertImages” method in documentbuilder and it returns shape list and shaperenderer must render the shapelist as a one file.

This is very important part for my project and i am stucked here

3

Hi Ertan,

Thanks for your inquiry. You may be able to resize multi-page TIFF images by using Aspose.Imaging for .NET. But, you need to manipulate TIFF images differently i.e. Frame by Frame. Please refer to the following article:

Manipulating TIFF Images

Best regards,

4
Thank you for your reply Awais,

I understand your point. But let me ask several thing regarding this.

1- Is it the best way for performance?

2- If you look at my code there is imgStream object that is actually a tiff stream (because when i save it, i can get a multi-page tiff file (without resizing).
Well I dont want to save this stream as a tiff file and read this file for Aspose.Imaging. I mean i want to use this stream directly like

var multiImage = Aspose.Imaging.Image.Load(imgStream);

But i get this exception

- Aspose.Imaging.Image.Load(imgStream); 'Aspose.Imaging.Image.Load(imgStream)' threw an exception of type 'Aspose.Imaging.CoreExceptions.ImageLoadException' Aspose.Imaging.Image {Aspose.Imaging.CoreExceptions.ImageLoadException}

+ InnerException {"Cannot open an image. The image file format may be not supported at the moment."} System.Exception {Aspose.Imaging.CoreExceptions.ImageLoadException}


StackTrace " at Aspose.Imaging.Image.\u0002(StreamContainer \u0002, LoadOptions \u0003)\r\n at Aspose.Imaging.Image.Load(Stream stream)" string


3- Let assume I use my stream object as Tiff image and I reach the frames, what about resizing. Because as I see, height and width properties of the frame object is only readable (no setter). so that how to resize the frame?

Considering my requirements, could you provide me a sample code?

I have to write wrappers for all aspose modules for creating multi-page tiff thumbnail. I've done for pdf and excel.. The word is one of the most important module. I can solve this problem but i do not want to do that way due the performance issue.

Thank you
5
Hi Ertan,

Thank you for your inquiry.

You can use System.IO.Stream objects to load an existing Image file using Aspose.Imaging. Following is the code demonstration. For details, please visit the links:


CODE:

//Create an instance of FileStream
using(System.IO.FileStream stream = new System.IO.FileStream(@"sample.bmp",System.IO.FileMode.Open))
{
//Create an instance of Image class and load an existing file through FileStream object by calling Load method
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(stream))
{
//do some image processing.
}
}

Please try the above at your end. Feel free to contact us in case of any query or comments.

6

You wrote me the same answer in my other topic which has the same problem…


Please take a ref from here

How to use Bitmap object in Imaging from GetThumbnail Function without saving - #5 by iwagbe - Free Support Forum - aspose.com

This problem is a bit different then the problem from the link.


PS: UPDATE

In this case, we have a stream object which contains a multipage tiff. But the problem in the link, it is only one image (not contains any frame). I do not know if there is difference to solving the problem. But I wanted to mention about it

7
Hi Ertan,

Please refer to the post for detailed answer of your inquiry.


8

The issues you have found earlier (filed as ) have been fixed in this Aspose.Words for JasperReports 18.3 update.