Gtk2::BindingSet(3pm) | User Contributed Perl Documentation | Gtk2::BindingSet(3pm) |
Gtk2::BindingSet - wrapper for GtkBindingSet
A "Gtk2::BindingSet" is basically a mapping from keyval+modifiers to a named action signal to invoke and with argument values for the signal. Bindings are normally run by the "Gtk2::Widget" default "key-press-event" handler, but can also be activated explicitly.
Binding sets can be populated from program code with "entry_add_signal", or created from an RC file or string (see Gtk2::Rc). If you use the RC note it doesn't parse and create anything until there's someone interested in the result, such as "Gtk2::Settings" for widgets. This means binding sets in RC files or strings don't exist for "Gtk2::BindingSet->find" to retrieve until at least one widget has been created (or similar).
Currently there's no Perl-level access to the contents of a BindingSet, except for "set_name".
Glib::Boxed +----Gtk2::BindingSet
The following constants are defined for standard priority levels,
Gtk2::GTK_PATH_PRIO_LOWEST Gtk2::GTK_PATH_PRIO_GTK Gtk2::GTK_PATH_PRIO_APPLICATION Gtk2::GTK_PATH_PRIO_THEME Gtk2::GTK_PATH_PRIO_RC Gtk2::GTK_PATH_PRIO_HIGHEST
LOWEST, which is 0, and HIGHEST, which is 15, are the limits of the allowed priorities. The standard values are from the "Gtk2::PathPriorityType" enum, but the parameter here is an integer, not an enum string, so you can give a value for instance a little above or below the pre-defined levels.
Add an entry to $binding_set. $keyval and $modifier are setup as a binding for $signal_name and with signal parameters given by $value arguments. Each value is preceded by a type (a string), which must be one of
Glib::Long Glib::Double Glib::String an enum type, ie. subtype of Glib::Enum Glib::Flags, or a flags subtype
For example,
$binding_set->entry_add_signal (Gtk2->keyval_from_name('Return'), [ 'control-mask' ], # modifiers 'some-signal-name', 'Glib::Double', 1.5, 'Glib::String, 'hello');
A parameter holds one of the three types Long, Double or String. When invoked they're coerced to the parameter types expected by the target object or widget. Use Glib::Long for any integer argument, including chars and unichars by ordinal value. Use Glib::Double for both single and double precision floats.
Flags and enums are held as Longs in the BindingSet. You can pass an enum type and string and "entry_with_signal" will lookup and store accordingly. For example
$binding_set->entry_add_signal (Gtk2->keyval_from_name('Escape), [], 'set-direction', 'Gtk2::Orientation', 'vertical');
Likewise flags from an arrayref,
$binding_set->entry_add_signal (Gtk2->keyval_from_name('d'), [], 'initiate-drag', 'Gtk2::Gdk::DragAction', ['move,'ask']);
If you've got a Glib::Flags object, rather than just an arrayref, then you can just give Glib::Flags as the type and the value is taken from the object. For example,
my $flags = Gtk2::DebugFlag->new (['tree', 'updates']); $binding_set->entry_add_signal (Gtk2->keyval_from_name('x'), ['control-mask'], 'change-debug', 'Glib::Flags', $flags);
Since: gtk+ 2.12
Return the name of $binding_set.
Gtk2, Glib::Boxed
Copyright (C) 2003-2011 by the gtk2-perl team.
This software is licensed under the LGPL. See Gtk2 for a full notice.
2017-06-24 | perl v5.24.1 |