class Gdk::TouchpadEvent

Overview

An event related to a gesture on a touchpad device.

Unlike touchscreens, where the windowing system sends basic sequences of begin, update, end events, and leaves gesture recognition to the clients, touchpad gestures are typically processed by the system, resulting in these events.

Defined in:

lib/gi-crystal/src/auto/gdk-4.0/touchpad_event.cr

Constructors

Class Method Summary

Instance Method Summary

Instance methods inherited from class Gdk::Event

_get_angle(event2 : Gdk::Event, angle : Float64) : Bool _get_angle, _get_center(event2 : Gdk::Event, x : Float64, y : Float64) : Bool _get_center, _get_distance(event2 : Gdk::Event, distance : Float64) : Bool _get_distance, axes(axes : Enumerable(Float64)) : Bool
axes(*axes : Float64) axes, axis(axis_use : Gdk::AxisUse, value : Float64) : Bool axis, device : Gdk::Device? device, device_tool : Gdk::DeviceTool? device_tool, display : Gdk::Display? display, event_sequence : Gdk::EventSequence event_sequence, event_type : Gdk::EventType event_type, finalize finalize, history : Enumerable(Gdk::TimeCoord)? history, modifier_state : Gdk::ModifierType modifier_state, pointer_emulated : Bool pointer_emulated, position(x : Float64, y : Float64) : Bool position, seat : Gdk::Seat? seat, surface : Gdk::Surface? surface, time : UInt32 time, to_unsafe : Pointer(Void) to_unsafe, triggers_context_menu : Bool triggers_context_menu

Class methods inherited from class Gdk::Event

g_type : UInt64 g_type

Constructor Detail

def self.new #

Initialize a new TouchpadEvent.


Class Method Detail

def self.g_type : UInt64 #

Returns the type id (GType) registered in GLib type system.


Instance Method Detail

def deltas(dx : Float64, dy : Float64) : Nil #

Extracts delta information from a touchpad event.


def gesture_phase : Gdk::TouchpadGesturePhase #

Extracts the touchpad gesture phase from a touchpad event.


def n_fingers : UInt32 #

Extracts the number of fingers from a touchpad event.


def pinch_angle_delta : Float64 #

Extracts the angle delta from a touchpad pinch event.


def pinch_scale : Float64 #

Extracts the scale from a touchpad pinch event.