Mupdf Generate Thumbnail

Question

I implemented E-Book App using Mupdf Library and want to generate thumbnail for each pdf file in my project Could Anyone tell me how to generate This? Thanks in advance

Answer 1

In Librelio they're using the old version of project muPDF without Cookie. In new versions you need to extend mu pdf core, like this:

class MuPDFThumb extends MuPDFCore{
    public MuPDFThumb(Context context, String filename) throws Exception{
        super(context, filename);
    }

    public Bitmap thumbOfFirstPage(int w, int h){
        PointF pageSize = getPageSize(0);
        float mSourceScale = Math.max(w/pageSize.x, h/pageSize.y);

        Point size = new Point((int)(pageSize.x*mSourceScale), (int)(pageSize.y*mSourceScale));
        final Bitmap bp = Bitmap.createBitmap(size.x,size.y, Bitmap.Config.ARGB_8888);

        drawPage(bp,0,size.x, size.y, 0, 0, size.x, size.y,new Cookie());
        return bp;
    }
}

You need to extends, because Cookie is an internal class of MuPDFCore and it is required for calling drawPage.

The method thumbOfFirstPage takes 2 arguments: width and height of the ImageView to fill with bitmap:

thumbnailImageView.setImageBitmap(bPGenerated) in UIThread

Answer 2

Try the following:

core.drawPage(bm, page, pageW, pageH, patchX, patchY, patchW, patchH);