package ocgtk

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OCaml bindings for GTK 4

Install 

dune-project
 Dependency

github.com Edit opam file Versions (2)

Authors

  1. C
    Chris Armstrong

Maintainers

  1. H
    hello@chrisarmstrong.dev

Sources

v0.1-preview2.tar.gz
sha256=4e50fdb5093136a10fc8ffbe388e44cbcb70d52f8afdd48863ec7e22580ff054

doc/ocgtk.gtk/Ocgtk_gtk/Gtk/Wrappers/Gesture_stylus/index.html

Module Wrappers.Gesture_stylus

type t = [ `gesture_stylus | `gesture_single | `gesture | `event_controller | `object_ ] Gobject.obj
val new_ : unit -> t

Create a new GestureStylus

val set_stylus_only : t -> bool -> unit

Sets the state of stylus-only

If true, the gesture will exclusively handle events from stylus input devices, otherwise it'll handle events from any pointing device.

val get_stylus_only : t -> bool

Checks whether the gesture is for styluses only.

Stylus-only gestures will signal events exclusively from stylus input devices.

val get_device_tool : t -> Ocgtk_gdk.Gdk.Wrappers.Device_tool.t option

Returns the `GdkDeviceTool` currently driving input through this gesture.

This function must be called from the handler of one of the signal@Gtk.GestureStylus::down, signal@Gtk.GestureStylus::motion, signal@Gtk.GestureStylus::up or signal@Gtk.GestureStylus::proximity signals.

val get_backlog : t -> bool * Ocgtk_gdk.Gdk.Wrappers.Time_coord.t array * int

Returns the accumulated backlog of tracking information.

By default, GTK will limit rate of input events. On stylus input where accuracy of strokes is paramount, this function returns the accumulated coordinate/timing state before the emission of the current Gtk.GestureStylus::motion signal.

This function may only be called within a signal@Gtk.GestureStylus::motion signal handler, the state given in this signal and obtainable through method@Gtk.GestureStylus.get_axis express the latest (most up-to-date) state in motion history.

The @backlog is provided in chronological order.

val get_axis : t -> Ocgtk_gdk.Gdk.axisuse -> bool * float

Returns the current value for the requested @axis.

This function must be called from the handler of one of the signal@Gtk.GestureStylus::down, signal@Gtk.GestureStylus::motion, signal@Gtk.GestureStylus::up or signal@Gtk.GestureStylus::proximity signals.

val on_down : ?after:bool -> t -> callback:(x:float -> y:float -> unit) -> Gobject.Signal.handler_id
val on_motion : ?after:bool -> t -> callback:(x:float -> y:float -> unit) -> Gobject.Signal.handler_id
val on_proximity : ?after:bool -> t -> callback:(x:float -> y:float -> unit) -> Gobject.Signal.handler_id
val on_up : ?after:bool -> t -> callback:(x:float -> y:float -> unit) -> Gobject.Signal.handler_id