getting the size and origin of a GtkWindow

getting the size and origin of a GtkWindow

[Russell McManus]

I'd like to get and set the origin and size of a GtkWindow, that I've
created in guile-gtk.  Is this possible?

Lots of sniffing around using (ice-9 session), apropos, etc., and
source code browsing leads me to believe that this functionality is
not currently accessible from guile-gtk.  Just wanted to check.

I would consider adding this functionality and sending a patch if it's
missing.  After spending a short while with the source, it's not clear
just how this would be done, aside from hacking up an interface by
hand.

-russ


--
"I, too, prefer to write general code first and get the shape and
functionality right, and then to tune as needed where a problem is
discovered."
             -- Kent Pitman on comp.lang.lisp

Re: getting the size and origin of a GtkWindow

[Marius Vollmer]

Russell McManus <russell.mcmanus@msdw.com> writes:

> I'd like to get and set the origin and size of a GtkWindow, that I've
> created in guile-gtk.  Is this possible?

Hmm, I don't think so.  How would you do this from C?  It is probably
easy to add the missing things to guile-gtk once it is clear in what
way the Gtk+ API wants to be used.

Hmm^2, the right way probably involves GtkAllocation which doesn't
exist in guile-gtk yet.  I don't think we want to add support for it
because it is too similar to a rectangle.

Hmm^3, [time passes] I just added a `cname' field option to
build-guile-gtk.  You can now say things like

    (define-object GtkWidget (GtkObject)
      (fields
       (uint requisition-width (cname requisition.height))
       (uint requisition-height (cname requisition.width))
       (int allocation-x (cname allocation.x))
       (int allocation-y (cname allocation.y))
       (uint allocation-width (cname allocation.width))
       (uint allocation-height (cname allocation.height))
       (GtkStyle style)
       (GdkWindow window)))

in the defs files and access the allocation.x field of a GtkWidget w
like so

    (gtk-widget-allocation-x w)

Nice and esay, eh? :)

Please update from CVS to get this change.  But I guess this is not
really what you want to have, right?

[ Maybe we should automatically translate dashes to dots in field
  names.  Dashes are illegal in C identifiers anyway... ]

Re: getting the size and origin of a GtkWindow

[Russell McManus]

Marius Vollmer <mvo@zagadka.ping.de> writes:

> Russell McManus <russell.mcmanus@msdw.com> writes:
> 
> > I'd like to get and set the origin and size of a GtkWindow, that I've
> > created in guile-gtk.  Is this possible?
> 
> Hmm, I don't think so.  How would you do this from C?  It is probably
> easy to add the missing things to guile-gtk once it is clear in what
> way the Gtk+ API wants to be used.

I won't respond to the totality of your message, because I haven't
tried your change (thanks for that, btw), but I will forward you this
email message that I found on the web:

How to get GtkWindow's position and size?
From: Carlos Pereira <carlos pehoe civil ist utl pt>
To: gtk-app-devel-list redhat com
Subject: How to get GtkWindow's position and size?
Date: Wed, 15 Mar 2000 14:32:28 GMT

>How to get GtkWindow's position and size?

You can use, for example:

gdk_window_get_origin (window->window, &x, &y);
gdk_window_get_size (window->window, &w, &h);

and then:

gdk_window_move_resize (window->window, x, y, w, h);
gdk_window_move (window->window, x, y);
gdk_window_resize (window->window, w, h);


-russ



--
The whole aim of practical politics is to keep the populace alarmed
[and hence clamorous to be led to safety] by menacing it with an
endless series of hobgoblins, all of them imaginary.  
             -- H.L. Mencken

Re: getting the size and origin of a GtkWindow

[Marius Vollmer]

Russell McManus <russell.mcmanus@msdw.com> writes:

> How to get GtkWindow's position and size?
> From: Carlos Pereira <carlos pehoe civil ist utl pt>
> To: gtk-app-devel-list redhat com
> Subject: How to get GtkWindow's position and size?
> 
> >How to get GtkWindow's position and size?
> 
> You can use, for example:
> 
> gdk_window_get_origin (window->window, &x, &y);
> gdk_window_get_size (window->window, &w, &h);

Ahh, I see.  gdk-window-get-size is already there, but
gdk-window-get-origin needs to be added (which I have done in CVS).
You can use them like this:

    (define w (gtk-window-new 'toplevel))
    ...
    (gdk-window-get-size (gtk-widget-window w))
    => (200 . 200)

As you can see, the functions return the two coordinates as a cons of
two numbers.

Does this help?

Re: getting the size and origin of a GtkWindow

[Russell McManus]

Marius Vollmer <mvo@zagadka.ping.de> writes:

> Ahh, I see.  gdk-window-get-size is already there, but
> gdk-window-get-origin needs to be added (which I have done in CVS).
> You can use them like this:
> 
>     (define w (gtk-window-new 'toplevel))
>     ...
>     (gdk-window-get-size (gtk-widget-window w))
>     => (200 . 200)
> 
> As you can see, the functions return the two coordinates as a cons of
> two numbers.
> 
> Does this help?

You betcha.  Now I just have to figure out how to get anon CVS access
out through my firewall at work (I can 'runsocks ssh' anywhere on the
net, so I think it is possible).  Thanks for looking at this.

-russ

--
A computer lets you make more mistakes faster than any invention in
human history with the possible exceptions of handguns and tequila.
             -- Mitch Ratliffe, Technology Review, April, 1992