Extract area as graphic?

[James]

Hi,

We've been using the pdf viewer for years, and a new requirement has arisen around extraction of data. What we'd like to do is to allow users to draw a box around an area of the pdf on screen, and to export that area as a graphic (jpg / png etc).

Is this possible? I've had a look at the forums etc, but can't see that this question has been asked before.

(What we'd like to do in particular, is draw a box around a table and then use this API to parse the image and return structured data to us: https://azure.microsoft.com/en-us/services/cognitive-services/computer-vision/ )

Thanks, James.

[Georgi]

Hello James,

In order to achieve the desired result, you can obtain the coordinates on mouse click. After this, you can take a snapshot of RadPdfViewer using the RadBitmap class and crop the bitmap instance using the obtained coordinates, for example:

RadBitmap image = new RadBitmap(this.pdfViewer);
image = image.Crop(
    snapshotCropRangeX,
    snapshotCropRangeY,
    snapshotCropRangeWidth,
    snapshotCropRangeHeight);

I hope this helps.

Regards,
Georgi
Progress Telerik

[James]

Thanks Georgi, I'll give that a go. (I found a way of getting the whole page, but having just the selection would be good.)

James.