Save preview of page into the file

petr.sklenicka
Topic Author
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Junior Member

IP: 192.168.0.71 11 years 5 months ago #7528 by petr.sklenicka

Save preview of page into the file was created by petr.sklenicka

Hello,
there is a class PDFViewThumb in your library. I use this class for displaying previews of pages, but the rendering of the previews is a little bit slow.
Does your library support some function for saving a rendered preview into a .png, .jpeg or some other format? I would like to save rendered previews into a file and when the preview will be needed, there will be no need to render it again, but a saved image will be used.
Is there any functionality for this there in your library?

Best regards,
Petr

nermeen
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Platinum Member

IP: 192.168.0.158 11 years 5 months ago #7529 by nermeen

Replied by nermeen on topic Save preview of page into the file

You can do something like:

Code:

Bitmap mBitmap = Bitmap.createBitmap(200, 200, Bitmap.Config.ARGB_8888);
page.RenderToBmp(mBitmap, new Matrix( scale, -scale, (float)0, (float) 200 ));
        
//save the created thumb into the file system
try {
    FileOutputStream fos = new FileOutputStream(thumbsPath);
    mBitmap.compress(CompressFormat.JPEG, 100, fos);
} catch (java.io.IOException e) {
}
        

Time to create page: 0.385 seconds