a need for these features

[ghost]

Hello,
I am interested in your library wrapper to use in my application:
https://launchpad.net/equalx since it muPDF is very small, fast and
EqualX uses Qt.
However, I hope mupdf-qt solves 4 major problems I have with poppler-qt4
(and can not be solved easily or at all):

• I need a transparent page when rendering to image with the pdf library
  (if the pdf document doesn't already specify a color for the page)
• possibility to get/set the page color (including alpha channel)
• possibility to connect mupdf to use QPainter in order for me to save
  draw/save to SVG using Qt libs.
• possibility to crop a pdf and save it to another pdf (like pdfcrop
  application) - and/or a function to get the bounding box of all elements in the page.

With these features, EqualX will look great and can drop the need for 2 applications: pdfcrop and pdf2svg (which also require ghostscript)
Thanks!

[xiangxw]

I think it's great.
what do you think @Code-ReaQtor

[roniemartinez]

I think this is a good idea... But MuPDF, AFAIK, doesn't expose any API for editing a PDF file. (Or I just missed it).

pdfcrop is possible by cropping the resulting QImage and saving it using QPrinter::PdfFormat. Possibility of pdf2svg is very small since QImage is a "raster" format. I can't find any complete "documentation" of MuPDF aside from their examples.

But for the record, I tried both Poppler-Qt4 and MuPDF [in windows], and I observed that rendering a page in Poppler-Qt4 is very slow. For me, MuPDF is better.

[xiangxw]

Yes, that's right. Editing a PDF file using MuPDF seems impossiable nowadays.

[xiangxw]

Other features seems possiable. So we'll work on these.

[xiangxw]

Following features have been added. Please checkout the dev branch and try. Thanks. @QQuark

1. transparent rendering.
2. set background color. This does not modify conent of your PDF file. It's for page rendering only. We don't provide get background color function, because it's define by you, and we can't get this from your PDF file.
3. QPainter. You can use QPainter::drawImage(), so we do not provide a API for this.
4. crop. This can't be done with MuPDF right now.
5. function to get the bounding box of all elements in the page. This is not finished yet. We'll do this later.