Hi,
take a look at the DrawPrintTextLocations example in the examples package. Thsi
will give you some hints of hot to get the glyph
positions.
BR
Maruan
> Hello,
> I am trying to get glyph and image positions of pdfs using pdfbox.
> The thing is that with some books, that position is not the correct one (an
> offset is added to that position).
>
> I am not a pdfbox expert (I manage with the posts I find on the internet), so
> may be there is something wrong in the way I get those positions.
>
> The code to extract those positions, looks like this:
>
> public class MyPDFRenderer extends PDFRenderer
> {
> ...
>
> private class MyPageDrawer extends PageDrawer
> {
> ...
>
> protected GlyphWrapper createGlyphWrapper( Matrix
> textRenderingMatrix, PDFont font,
> int
> code, String unicode, Vector displacement) throws IOException
> {
> Shape bbox = new Rectangle2D.Float(0, 0,
> font.getWidth(code) / 1000, 1);
> AffineTransform at =
> textRenderingMatrix.createAffineTransform();
> bbox = at.createTransformedShape(bbox);
>
> Rectangle bounds = bbox.getBounds();
> bounds.y = getPageHeight() - bounds.y -
> bounds.height;
> GlyphWrapper result = new GlyphImpl( new int[]
> { code }, unicode, bounds );
>
> return( result );
> }
>
> protected int getPageHeight()
> {
> return( (int)
> getCurrentPage().getBBox().getHeight() );
> }
>
> @Override
> protected void showGlyph(Matrix textRenderingMatrix,
> PDFont font, int code, String unicode,
> Vector
> displacement) throws IOException
> {
> ...
> addGlyph( createGlyphWrapper(
> textRenderingMatrix, font, code, unicode, displacement) );
> ...
> }
>
> @Override
> public void drawImage(PDImage pdImage) throws
> IOException {
> super.drawImage(pdImage);
>
> ...
> ImageWrapper image =
> createImageWrapper( pdImage );
> if( image != null )
> _listOfImages.add( image );
> ...
> }
>
> // ami3
> private Rectangle getBoundingRect() {
> Matrix ctm =
> getGraphicsState().getCurrentTransformationMatrix();
> AffineTransform at =
> ctm.createAffineTransform();
> Shape bbox = new Rectangle2D.Float(0, 0, 1, 1);
> bbox = at.createTransformedShape(bbox);
>
> Rectangle result = bbox.getBounds();
> result.y = getPageHeight() - result.y -
> result.height;
>
> return( result );
> }
>
> protected ImageWrapper createImageWrapper( PDImage
> pdImage )
> {
> ImageWrapper result = null;
> RenderedImage image =
> ExecutionFunctions.instance().safeFunctionExecution( () -> pdImage.getImage()
> );
> if( image != null )
> {
> Rectangle rect = getBoundingRect();
> result = new ImageImpl( image, rect );
> }
>
> return( result );
> }
>
> ...
> }
>
> ...
> }
>
> And MyPDFRenderer is invoked with a dpi = 72
>
> I have created an application with which can be seen those displacements of
> glyphs and images.
>
> You can download it from:
> http://www.frojasg1.com:8080/downloads_web/downloadServletv3?file=pdfInspector.v1.0&language=English
>
> And also a Pdf with which those displacements can be noticed:
> http://www.frojasg1.com/Test-1.pdf
>
>
> Does somebody know what is wrong with this way to get positions ?
> How can be corrected?
>
> Thank you
>
>
>
>
>
>
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