NativeScript/nativescript-core/ui/animation/animation-interfaces.ts

// Types
import { View } from "../core/view";
import { PercentLength } from "../styling/style-properties";
import { Color } from "../../color";

export type Transformation = {
    property: TransformationType;
    value: TransformationValue;
};

export type TransformationType = "rotate" |
    "translate" | "translateX" | "translateY" |
    "scale" | "scaleX" | "scaleY";

export type TransformationValue = Pair | number;

export type TransformFunctionsInfo = {
    translate: Pair,
    rotate: number,
    scale: Pair,
};

export type AnimationPromise = Promise<void> & Cancelable;

export interface Pair {
    x: number;
    y: number;
}

export interface Cancelable {
    cancel(): void;
}

export interface PropertyAnimation {
    target: View;
    property: string;
    value: any;
    duration?: number;
    delay?: number;
    iterations?: number;
    curve?: any;
}

export interface PropertyAnimationInfo extends PropertyAnimation {
    _propertyResetCallback?: any;
    _originalValue?: any;
}

export interface AnimationDefinition {
    target?: View;
    opacity?: number;
    backgroundColor?: Color;
    translate?: Pair;
    scale?: Pair;
    height?: PercentLength | string;
    width?: PercentLength | string;
    rotate?: number;
    duration?: number;
    delay?: number;
    iterations?: number;
    curve?: any;
}

export interface AnimationDefinitionInternal extends AnimationDefinition {
    valueSource?: "animation" | "keyframe";
}

export interface IOSView extends View {
    _suspendPresentationLayerUpdates();
    _resumePresentationLayerUpdates();
    _isPresentationLayerUpdateSuspeneded();
}