Saving Shape Thumbnails without Background with Aspose.Slides for .NET

Aspose.Slides Product Family
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1

Hi guys,


I’m developing a .NET presenter that imports PPT presentations and needs to know if is possible to take shape thumbnails without the white background.

For example: Using the code: (Bitmap)sld.GetThumbnail(new object[] { shape }, 10.0, 10.0, shape.ShapeRectangle) I get a bitmap with white background, and I need this image without this background.

Its possible?

Thanks!

2

Hi Eduardo,

I have observed the issue shared by you and like to share that the desired feature for getting the slide thumbnail with transparent color is unavailable. An issue with ID 27069 has been created in our issue tracking system to further investigate and resolve the issue and provide the new feature support for creating shape thumbnails with transparent background.

Thanks and Regards,

3

The issues you have found earlier (filed as SLIDESNET-27069) have been fixed in this update.

This message was posted using Notification2Forum from Downloads module by Aspose Notifier.
4

Hi, I have this issue when trying to save the thumbnail/image of a chart.

Aspose v24.7

var chart = newSlide.Shapes.AddChart(ChartType.Line, 0, 0, (retrievedShape.Width / 72) * 96 * 2, (retrievedShape.Height / 72) * 96 * 2);
// insert series and stuff...
using var chartBitmap = chart.GetImage(ShapeThumbnailBounds.Shape, 1, 1);
chartBitmap.Save(imagePath, Aspose.Slides.ImageFormat.Png);
Presentation.Save("C:\\TEMP\\temp.pptx", SaveFormat.Pptx);

Saved Image (no transparency):
getImage_v24_7.png (70.6 KB)

Saved Presentation (chart has transparency):
save_v24_7.png (33.7 KB)

Aspose v24.3

var chart = newSlide.Shapes.AddChart(ChartType.Line, 0, 0, (retrievedShape.Width / 72) * 96 * 2, (retrievedShape.Height / 72) * 96 * 2);
// insert series and stuff...
using var chartBitmap = chart.GetThumbnail(ShapeThumbnailBounds.Shape, 1, 1);
chartBitmap.Save(imagePath, ImageFormat.Png);
Presentation.Save("C:\\TEMP\\temp.pptx", SaveFormat.Pptx);

Saved Image (no transparency):
getThumbnail_v24_3.png (36.1 KB)

Saved Presentation (chart has transparency):
save_v24_3.png (13.5 KB)

5

Nevermind, I removed the white fill and noticed that the chart does have transparency but for some reason the light grey shaded area (solid) gets moved to the front…

image.png (44.5 KB)

6

@muchagato,
Could you kindly share a complete code example to reproduce the problem on our end?