Glib::Ex::ConnectProperties::Element::widget_allocation -- widget size and position
Glib::Ex::ConnectProperties->new([$widget, 'widget-allocation#width'], [$another, 'something']);
This element class implements ConnectProperties access to the fields of
$widget->allocation() on a
Gtk2::Widget (see Gtk2::Widget).
widget-allocation#width integer, read-only widget-allocation#height integer, read-only widget-allocation#x integer, read-only widget-allocation#y integer, read-only widget-allocation#rectangle Gtk2::Gdk::Rectangle, read-only
widget-allocation#height are the widget's current size as set by its container parent (or set by the window manager for a top level). The values are read-only, but for example might be connected up to display the size somewhere,
Glib::Ex::ConnectProperties->new ([$toplevel, 'widget-allocation#width'], [$label, 'label']);
One use could be to connect the allocated size of one widget to the
height-request of another so as to make it follow that size, though how closely depends on what the target's container parent does for a given requested size. (See
Gtk2::SizeGroup for making a common width or height request among a set of widgets.)
Glib::Ex::ConnectProperties->new ([$image, 'widget-allocation#height'], [$vscale, 'height-request']);
widget-allocation#y are the position of the widget area within its windowed ancestor. These may be of limited use but are included for completeness.
widget-allocation#rectangle is the whole
Copyright 2010, 2011, 2012 Kevin Ryde
Glib-Ex-ConnectProperties is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version.
Glib-Ex-ConnectProperties is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Glib-Ex-ConnectProperties. If not, see http://www.gnu.org/licenses/.