Child widgets of GtkBox not resized until clicked

[Dan Vratil <dvratil redhat com>]

Hi,

I have this weird problem with layouts in Gtk and I hope you could push me in 
the right direction:

I have GtkScrolledWindow with vertically-oriented GtkBox inside. Within this 
box there are multiple GtkScrolledWindows. 

For each of these embedded scrolled windows I have handler of vadjustment's 
"changed" signal:

static void
inner_window_vadjustment_changed (GtkAdjustment* adjustment,
                                              gpointer user_data)
{
        GtkWidget *widget = user_data; /* the scrolled window */
   gint height = gtk_adjustment_get_upper (adjustment);
        gtk_widget_set_size_request (widget, -1, height);
   gtk_widget_queue_resize (widget);
}

This actually expands the scrolled window to height of it's content, thus 
hides the scrollbars (it's a workaround, GTK_POLICY_NEVER does not work, see 
below).

This works pretty well, the correct values are assigned 
(gtk_widget_get_size_request returns the new height), but the scrolled windows 
are in fact not resized. When I click in the window the new height is applied 
immediately and the scrolled window is resized correctly (but only the one I 
clicked into, not the other ones). What can I do to make the scrolled windows 
resize as soon as they receive gtk_widget_set_size_request()? 

Thanks for any suggestions

Dan



PS: you may wonder why on Earth am I doing this such stupid way, so here's 
some explanation: each GtkScrolledWindow contains a single WebKitWebView. I 
can't embed the webviews directly to the GtkBox, because such webviews cannot 
be resized (you can't shrink WebKitWebView which is not inside a scrolled 
window). Other option would be to set GTK_POLICY_NEVER to disable vertical 
scrolling, but webkit treats this policy as GTK_POLICY_AUTOMATIC [1]. I want 
the "master" scrolled window to handle the scrolling of the entire layout, not 
each of the embedded scrolled windows to have scroll bars on their own, so 
that's why I'm using such workaround.


[1] http://webkitgtk.org/reference/WebKitWebFrame.html#WebKitWebFrame-
scrollbars-policy-changed


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