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use crate::Interval;
use glib::{object::IsA, translate::*};
use std::fmt;
glib_wrapper! {
pub struct Animatable(Interface<ffi::ClutterAnimatable>);
match fn {
get_type => || ffi::clutter_animatable_get_type(),
}
}
pub const NONE_ANIMATABLE: Option<&Animatable> = None;
/// Trait containing all `Animatable` methods.
///
/// # Implementors
///
/// [`Actor`](struct.Actor.html), [`Animatable`](struct.Animatable.html), [`Box`](struct.Box.html), [`Clone`](struct.Clone.html), [`Group`](struct.Group.html), [`Rectangle`](struct.Rectangle.html), [`ScrollActor`](struct.ScrollActor.html), [`Stage`](struct.Stage.html), [`Text`](struct.Text.html), [`Texture`](struct.Texture.html)
pub trait AnimatableExt: 'static {
/// Finds the `gobject::ParamSpec` for `property_name`
/// ## `property_name`
/// the name of the animatable property to find
///
/// # Returns
///
/// The `gobject::ParamSpec` for the given property
/// or `None`
fn find_property(&self, property_name: &str) -> Option<glib::ParamSpec>;
/// Retrieves the current state of `property_name` and sets `value` with it
/// ## `property_name`
/// the name of the animatable property to retrieve
/// ## `value`
/// a `gobject::Value` initialized to the type of the property to retrieve
fn get_initial_state(&self, property_name: &str, value: &mut glib::Value);
/// Asks a `Animatable` implementation to interpolate a
/// a named property between the initial and final values of
/// a `Interval`, using `progress` as the interpolation
/// value, and store the result inside `value`.
///
/// This function should be used for every property animation
/// involving `Animatable`<!-- -->s.
///
/// This function replaces `Animatable::animate_property`.
/// ## `property_name`
/// the name of the property to interpolate
/// ## `interval`
/// a `Interval` with the animation range
/// ## `progress`
/// the progress to use to interpolate between the
/// initial and final values of the `interval`
/// ## `value`
/// return location for an initialized `gobject::Value`
/// using the same type of the `interval`
///
/// # Returns
///
/// `true` if the interpolation was successful,
/// and `false` otherwise
fn interpolate_value<P: IsA<Interval>>(
&self,
property_name: &str,
interval: &P,
progress: f64,
) -> Option<glib::Value>;
/// Sets the current state of `property_name` to `value`
/// ## `property_name`
/// the name of the animatable property to set
/// ## `value`
/// the value of the animatable property to set
fn set_final_state(&self, property_name: &str, value: &glib::Value);
}
impl<O: IsA<Animatable>> AnimatableExt for O {
fn find_property(&self, property_name: &str) -> Option<glib::ParamSpec> {
unsafe {
from_glib_none(ffi::clutter_animatable_find_property(
self.as_ref().to_glib_none().0,
property_name.to_glib_none().0,
))
}
}
fn get_initial_state(&self, property_name: &str, value: &mut glib::Value) {
unsafe {
ffi::clutter_animatable_get_initial_state(
self.as_ref().to_glib_none().0,
property_name.to_glib_none().0,
value.to_glib_none_mut().0,
);
}
}
fn interpolate_value<P: IsA<Interval>>(
&self,
property_name: &str,
interval: &P,
progress: f64,
) -> Option<glib::Value> {
unsafe {
let mut value = glib::Value::uninitialized();
let ret = from_glib(ffi::clutter_animatable_interpolate_value(
self.as_ref().to_glib_none().0,
property_name.to_glib_none().0,
interval.as_ref().to_glib_none().0,
progress,
value.to_glib_none_mut().0,
));
if ret {
Some(value)
} else {
None
}
}
}
fn set_final_state(&self, property_name: &str, value: &glib::Value) {
unsafe {
ffi::clutter_animatable_set_final_state(
self.as_ref().to_glib_none().0,
property_name.to_glib_none().0,
value.to_glib_none().0,
);
}
}
}
impl fmt::Display for Animatable {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Animatable")
}
}