Gtk2::BindingSet

DESCRIPTION

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".

HIERARCHY

  Glib::Boxed
  +----Gtk2::BindingSet

METHODS

GtkBindingSet = Gtk2::BindingSet->new ($set_name)

$set_name (string)

boolean = $binding_set->activate ($keyval, $modifiers, $object)

$keyval (integer)
$modifiers (Gtk2::Gdk::ModifierType)
$object (Gtk2::Object)

$binding_set->add_path ($path_type, $path_pattern, $priority)

$path_type (Gtk2::PathType)
$path_pattern (string)
$priority (integer)

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.

bindingset or undef = Gtk2::BindingSet->by_class ($name)

$name (string)

$binding_set->entry_add_signal ($keyval, $modifiers, $signal_name, $type,$value, ...)

$keyval (integer)
$modifiers (Gtk2::Gdk::ModifierType)
$signal_name (string)
$value (scalar)
$type (string)

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);

$binding_set->entry_remove ($keyval, $modifiers)

$keyval (integer)
$modifiers (Gtk2::Gdk::ModifierType)

$binding_set->entry_skip ($keyval, $modifiers)

$keyval (integer)
$modifiers (Gtk2::Gdk::ModifierType)

Since: gtk+ 2.12

bindingset or undef = Gtk2::BindingSet->find ($name)

$name (string)

'shift-mask' / 'GDK_SHIFT_MASK'
'lock-mask' / 'GDK_LOCK_MASK'
'control-mask' / 'GDK_CONTROL_MASK'
'mod1-mask' / 'GDK_MOD1_MASK'
'mod2-mask' / 'GDK_MOD2_MASK'
'mod3-mask' / 'GDK_MOD3_MASK'
'mod4-mask' / 'GDK_MOD4_MASK'
'mod5-mask' / 'GDK_MOD5_MASK'
'button1-mask' / 'GDK_BUTTON1_MASK'
'button2-mask' / 'GDK_BUTTON2_MASK'
'button3-mask' / 'GDK_BUTTON3_MASK'
'button4-mask' / 'GDK_BUTTON4_MASK'
'button5-mask' / 'GDK_BUTTON5_MASK'
'super-mask' / 'GDK_SUPER_MASK'
'hyper-mask' / 'GDK_HYPER_MASK'
'meta-mask' / 'GDK_META_MASK'
'release-mask' / 'GDK_RELEASE_MASK'
'modifier-mask' / 'GDK_MODIFIER_MASK'

enum Gtk2::PathType

'widget' / 'GTK_PATH_WIDGET'
'widget-class' / 'GTK_PATH_WIDGET_CLASS'
'class' / 'GTK_PATH_CLASS'

COPYRIGHT

This software is licensed under the LGPL. See Gtk2 for a full notice.

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