lablgtk and pdf

lablgtk and pdf

[Ewen Maclean]

Hello,

I wondered if someone could help me. I am generating pdf images from
latex source, and I would like to show them on screen in part of a
pane in lablgtk2. Is it possible to do this using a GImage widget or
something similar? If not what can I convert it to to show this image,
and which object should I use. Sorry for not being able to find this
first on the gtk documentation.

Ewen

Re: [Caml-list] lablgtk and pdf

[Eric Cooper]

On Tue, Dec 01, 2009 at 02:09:27AM +0000, Ewen Maclean wrote:
> I am generating pdf images from latex source, and I would like to
> show them on screen in part of a pane in lablgtk2. Is it possible to
> do this using a GImage widget or something similar?

I think you will have to render the PDF first into a simple image
format like PPM, and then use GTK to display that.  I don't know of
any OCaml bindings for libpoppler, but you can use the standalone
program "pdftoppm" from the poppler-utils package.  Then you can
display the .ppm file as follows:

    let file = Sys.argv.(1) in
    GMain.init ();
    let window = GWindow.window ~title: "Show Image" () in
    let image = GMisc.image ~file ~packing: window#add () in
    window#connect#destroy ~callback: GMain.quit;
    window#show ();
    GMain.main ()

Re: [Caml-list] lablgtk and pdf

[Marc de Falco]

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It might be better to produce a svg and then display the svg trough cairo.
I don't know if there are bindings available in OCaml to do that (mainly for
librsvg).

2009/12/1 Eric Cooper <ecc@cmu.edu>

> On Tue, Dec 01, 2009 at 02:09:27AM +0000, Ewen Maclean wrote:
> > I am generating pdf images from latex source, and I would like to
> > show them on screen in part of a pane in lablgtk2. Is it possible to
> > do this using a GImage widget or something similar?
>
> I think you will have to render the PDF first into a simple image
> format like PPM, and then use GTK to display that.  I don't know of
> any OCaml bindings for libpoppler, but you can use the standalone
> program "pdftoppm" from the poppler-utils package.  Then you can
> display the .ppm file as follows:
>
>    let file = Sys.argv.(1) in
>    GMain.init ();
>    let window = GWindow.window ~title: "Show Image" () in
>    let image = GMisc.image ~file ~packing: window#add () in
>    window#connect#destroy ~callback: GMain.quit;
>    window#show ();
>    GMain.main ()
>
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