Re: Problem with Search Results of PDFDocument-Class

[BB <adamnt42@xxxxxxxxx>]

On 1/9/24 2:07 am, Claus Dietrich wrote:
> Hi
>
> I am working on PDF-based help-viewer. When I tried to implement a 
> search function I found that the number of hits for each page are 
> correct, but the locations, which are returned for each page as RectF 
> array, have nothing to do with the reality.
>
> All attempts to transform the RectF results to something usable 
> failed. Is there anything special I need to consider or do we have a 
> bug here?
>
> I attached the current state of the project. Just start it, click on 
> the search button and enter the search expression (i.e. 'ipsum') and 
> press Enter. The locations of hits are marked as red rectangle.
>
> With best regards
>
> Claus
Strange! I was working on that exact same thing over the last couple of 
days.

I guess you realise that the co-ordinate realms of the DocumentViewer 
and the pdf RectF are completely different. I guess we need to determine 
a range based on the topmost-leftmost character and the 
bottommost-rightmost character position (as the last line may not be as 
wide) for both realms and work out a conversion from there.

It may also help to understand how DocumentViewer renders a pdf 
document. Which I dont.

b