NativeScript/tests/app/ui/layouts/layout-helper.d.ts

import { Button } from "tns-core-modules/ui/button";
import { StackLayout } from "tns-core-modules/ui/layouts/stack-layout";
import { GridLayout } from "tns-core-modules/ui/layouts/grid-layout";

export interface MeasuredView {
    measureCount: number;
    arrangeCount: number;

    measured: boolean;
    arranged: boolean;

    measureHeight: number;
    measureWidth: number;

    widthMeasureSpec: number;
    heightMeasureSpec: number;

    layoutWidth: number;
    layoutHeight: number;
    layoutLeft: number;
    layoutTop: number;
}

export class MyButton extends Button implements MeasuredView {
    measureCount: number;
    arrangeCount: number;

    measured: boolean;
    arranged: boolean;

    measureHeight: number;
    measureWidth: number;

    widthMeasureSpec: number;
    heightMeasureSpec: number;

    layoutWidth: number;
    layoutHeight: number;
    layoutLeft: number;
    layoutTop: number;
}

export class MyStackLayout extends StackLayout implements MeasuredView {
    measureCount: number;
    arrangeCount: number;

    measured: boolean;
    arranged: boolean;

    measureHeight: number;
    measureWidth: number;

    widthMeasureSpec: number;
    heightMeasureSpec: number;

    layoutWidth: number;
    layoutHeight: number;
    layoutLeft: number;
    layoutTop: number;
}

export class MyGridLayout extends GridLayout implements MeasuredView {
    measureCount: number;
    arrangeCount: number;

    measured: boolean;
    arranged: boolean;

    measureHeight: number;
    measureWidth: number;

    widthMeasureSpec: number;
    heightMeasureSpec: number;

    layoutWidth: number;
    layoutHeight: number;
    layoutLeft: number;
    layoutTop: number;
}

export function assertMeasure(view: MeasuredView, width: number, height: number, name?: string);
export function assertLayout(view: MeasuredView, left: number, top: number, width: number, height: number, name?: string): void;
export function dip(value: number): number;
export function dp(value: number): number;