Shrink window dynamically when content shrinks?

Conchulio · **Joined:** Fri Jan 20, 2012 9:40 pm **Posts:** 3

I have a window in a Vala application and an image inside it. This image is changed sometimes by

Code:

img.set_from_pixbuf(imgdata);

and so it's size changes as well. It's embedded in a Gtk.Box.

Code:

box = new Gtk.Box(Orientation.VERTICAL,5);
...
box.pack_end(img,false,false);

So if there was a big image before and I replace it with a smaller one, the window remains ridiculously big and I have not found a method to dynamically shrink it to the space required. I have tried with

Code:

window.set_default_size(box.width_request,box.height_request)

but it always returns -1.

So any ideas how to resize the window? I just tried everything and am so desperate. Thanks!

Paul Childs · **Posted:** Sat Jan 21, 2012 12:08 am

hmm in c this returns void. Maybe things are different in the world of python.
The function you are using I think is meant to be used for initially setting the window size before realising it on the screen. Once it is there you'd be better off using gtk_window_resize

Conchulio · **Joined:** Fri Jan 20, 2012 9:40 pm **Posts:** 3

I'm using Vala, not Python ;)
Yeah, what you said is probably true. However, it doesn't matter, which function I use, the result remains the same...
I just can't believe that GTK+ is not capable of automatically resizing a window.
Ok, I would even be happy if I was able to resize the window manually. But no luck so far

Would be very happy about any new solutions :)
Conchulio

Paul Childs · **Posted:** Sun Jan 22, 2012 12:06 pm

It's not designed to shrink automatically. Gtk like a lot of widget sets are designed to work on devices with different screen sizes (e.g. desktops, netbooks and android phones). As such widgets are rarely expressed as fxed sizes; rather the window is set by the user and the widgets then fill to make best use of the available space. So yes It'll likely have to be done manually. Why that's not working I'm not sure.
Sorry I see dots and automatically think python. Actually these calls are listed as returning public void http://valadoc.org/gtk+-3.0/Gtk.Window.resize.html so I'm not sure where your -1 comes from.
One possibility I can think of is that the window has had a size request made based on the size of your inital image and so you may need to make a new set_size_request call before it can shrink down smaller than these dimensions.

Conchulio · **Joined:** Fri Jan 20, 2012 9:40 pm **Posts:** 3

The -1 was just because I mixed up two different functions. So Gtk isn't buggy ;)
So what I'm experiencing now is that set_size_request(..,..) doesn't affect the widgets on which it is called... strange

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Shrink window dynamically when content shrinks?

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