Gtk.GestureZoom

Gtk.GestureZoom — Zoom gesture

Object Hierarchy:

    GObject
    ╰── Gtk.EventController
        ╰── Gtk.Gesture
            ╰── Gtk.GestureZoom

Functions:

• new (widget:Gtk.Widget) -> Gtk.Gesture
• get_scale_delta (self) -> float

Description:

Gtk.GestureZoom is a GtkGesture implementation able to recognize pinch/zoom gestures, whenever the distance between both tracked sequences changes, the Gtk.GestureZoom::scale-changed signal is emitted to report the scale factor.

Function Details:

new()

new (widget:Gtk.Widget) -> Gtk.Gesture

Returns a newly created Gtk.Gesture that recognizes zoomin/out gestures (usually known as pinch/zoom).

• Returns: a newly created Gtk.GestureZoom

• Since: 3.14

get_scale_delta()

get_scale_delta (self) -> float

If gesture is active, this function returns the zooming differencesince the gesture was recognized (hence the starting point isconsidered 1:1). If gesture is not active, 1 is returned.

• Returns: the scale delta

• Since: 3.14