Hi Irtza,
On Sun, Apr 10, 2005 at 09:48:24PM -0400, Irtza Sharif wrote:
> Thank you for your response. Let me clarify my situation.
>
> I have a Scrolled Window within which I add a vbox
>
> The widgets inside the vbox are held in a linked list that I have
> setup. New widgets can be created and added to this vbox within the
> scrolled window while the program is running. When these new widgets
> are created and added, I would like to shift the scrolled window to
> show this widget.
If the new widgets are direct children of the vbox (which is a direct
child of the scrolled window's viewport), you should be able to do
something like this:
void scroll_to(GtkWidget* scrolled_window, GtkWidget* widget) {
gdouble page_inc, step_inc, upper, lower, pos;
GtkAdjustment* vadj = gtk_scrolled_window_get_vadjustment(
GTK_SCROLLED_WINDOW(scrolled_window));
page_inc = vadj->page_increment;
step_inc = vadj->step_increment;
lower = vadj->lower;
/* Otherwise we sometimes scroll down into a page of black. */
upper = vadj->upper - page_inc - step_inc;
/* Center on the widget. */
pos = (gdouble)widget->allocation.y - page_inc/2;
gtk_adjustment_set_value(vadj, CLAMP(pos, lower, upper));
}
This only takes into account the vertical, but I think the horizontal
could be done similarly.
If the new widgets aren't direct children of the vbox, you could still
probably do this by recursing up through widget->parent until you get to
the vbox, remapping the coordinates along the way.
Hope this helps,
Stephen
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