Adding image with setting it's opacity

Aspose.Words Product Family
1

How to add image in Aspose.Words and set it’s opacity? Is there is any property or something?

2

@chub,

For example, the following code of Aspose.Imaging for .NET API creates a blank canvas of type PNG with transparency and draws another image over it while specifying the desired opacity (ColorMatrix.Matrix33). Please note, 0.3f means 30% so you may set it to any desired value. Moreover, you may change the opacity for every next image if you set this property in a loop.

using (PngImage pngImage = new PngImage(1500, 1500, PngColorType.TruecolorWithAlpha))
{
    ColorMatrix cmxPic = new ColorMatrix();
    cmxPic.Matrix33 = 0.3f;
    ImageAttributes iaPic = new ImageAttributes();
    iaPic.SetColorMatrix(cmxPic, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);

    using (Image loaded = Image.Load(“d:/ temp / logo.png”))
    {
        Graphics gr = new Graphics(pngImage);
        gr.DrawImage(loaded, loaded.Bounds, GraphicsUnit.Pixel, iaPic);
    }
    pngImage.Save(“D:/ newPng.png”);
}

After that your Image is processed you will then be able to insert image inside Word document and set its different parameters:

Document doc = new Document("E:\\Temp\\in.docx");
DocumentBuilder builder = new DocumentBuilder(doc);
builder.MoveToDocumentEnd();
Shape shape = builder.InsertImage("E:\\Temp\\Aspose.Words.jpg");
shape.Fill.Opacity = 0.7;
shape.Stroke.On = true;
shape.Stroke.Color = doc.Theme.Colors.Accent1;
shape.Stroke.Weight = 5;
shape.Stroke.Opacity = 0.7;
doc.Save("E:\\Temp\\19.12.docx");

Hope, this helps in achieving what you are looking for.

3

Is there is any possible way to use only Aspose.Words for this task?
I am thying to add some images, but opacity don’t work. I don’t need to use any other products

4

@chub,

We have logged your requirement in our issue tracking system. Your ticket number is WORDSNET-19658 . We will further look into the details of this problem and will keep you updated on the status of the linked issue. We apologize for your inconvenience.

5

The issues you have found earlier (filed as WORDSNET-19658) have been fixed in this Aspose.Words for .NET 21.10 update also available on NuGet.