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

import { Button } from "@nativescript/core/ui/button";
import { StackLayout } from "@nativescript/core/ui/layouts/stack-layout";
import { GridLayout } from "@nativescript/core/ui/layouts/grid-layout";
import * as utils from "@nativescript/core/utils/utils";
import * as TKUnit from "../../tk-unit";
import * as def from "./layout-helper";

var DELTA = 0.1;

export class MyGridLayout extends GridLayout implements def.MyGridLayout {
    public measureCount: number = 0;
    public arrangeCount: number = 0;

    public widthMeasureSpec: number = Number.NaN;
    public heightMeasureSpec: number = Number.NaN;

    public onMeasure(widthMeasureSpec: number, heightMeasureSpec: number): void {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        this.widthMeasureSpec = widthMeasureSpec;
        this.heightMeasureSpec = heightMeasureSpec;
        this.measureCount++;
    }

    public onLayout(left: number, top: number, right: number, bottom: number): void {
        super.onLayout(left, top, right, bottom);
        this.arrangeCount++;
    }

    public get measured(): boolean {
        return this.measureCount > 0;
    }

    public get arranged(): boolean {
        return this.arrangeCount > 0;
    }

    public get measureWidth() {
        return utils.layout.getMeasureSpecSize(this.widthMeasureSpec);
    }

    public get measureHeight() {
        return utils.layout.getMeasureSpecSize(this.heightMeasureSpec);
    }

    get layoutWidth(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.right - bounds.left;
    }

    get layoutHeight(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.bottom - bounds.top;
    }

    get layoutLeft(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.left;
    }

    get layoutTop(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.top;
    }
}

export class MyStackLayout extends StackLayout implements def.MyStackLayout {
    public measureCount: number = 0;
    public arrangeCount: number = 0;

    public widthMeasureSpec: number = Number.NaN;
    public heightMeasureSpec: number = Number.NaN;

    public onMeasure(widthMeasureSpec: number, heightMeasureSpec: number): void {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        this.widthMeasureSpec = widthMeasureSpec;
        this.heightMeasureSpec = heightMeasureSpec;
        this.measureCount++;
    }

    public onLayout(left: number, top: number, right: number, bottom: number): void {
        super.onLayout(left, top, right, bottom);
        this.arrangeCount++;
    }

    public get measured(): boolean {
        return this.measureCount > 0;
    }

    public get arranged(): boolean {
        return this.arrangeCount > 0;
    }

    public get measureWidth() {
        return utils.layout.getMeasureSpecSize(this.widthMeasureSpec);
    }

    public get measureHeight() {
        return utils.layout.getMeasureSpecSize(this.heightMeasureSpec);
    }

    get layoutWidth(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.right - bounds.left;
    }

    get layoutHeight(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.bottom - bounds.top;
    }

    get layoutLeft(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.left;
    }

    get layoutTop(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.top;
    }
}

export class MyButton extends Button implements def.MyButton {
    public measureCount: number = 0;
    public arrangeCount: number = 0;

    public widthMeasureSpec: number = Number.NaN;
    public heightMeasureSpec: number = Number.NaN;

    public onMeasure(widthMeasureSpec: number, heightMeasureSpec: number): void {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        this.widthMeasureSpec = widthMeasureSpec;
        this.heightMeasureSpec = heightMeasureSpec;
        this.measureCount++;
    }

    public onLayout(left: number, top: number, right: number, bottom: number): void {
        super.onLayout(left, top, right, bottom);
        this.arrangeCount++;
    }

    public get measured(): boolean {
        return this.measureCount > 0;
    }

    public get arranged(): boolean {
        return this.arrangeCount > 0;
    }

    public get measureWidth() {
        return utils.layout.getMeasureSpecSize(this.widthMeasureSpec);
    }

    public get measureHeight() {
        return utils.layout.getMeasureSpecSize(this.heightMeasureSpec);
    }

    get layoutWidth(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.right - bounds.left;
    }

    get layoutHeight(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.bottom - bounds.top;
    }

    get layoutLeft(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.left;
    }

    get layoutTop(): number {
        let bounds = this._getCurrentLayoutBounds();

        return bounds.top;
    }
}

export function assertMeasure(view: def.MeasuredView, width: number, height: number, name?: string) {
    name = name ? "[" + name + "]" : "";

    TKUnit.assertAreClose(view.measureWidth, width, DELTA, name + "width");
    TKUnit.assertAreClose(view.measureHeight, height, DELTA, name + "height");
}

export function assertLayout(view: def.MeasuredView, left: number, top: number, width: number, height: number, name?: string): void {
    name = name ? "[" + name + "]" : "";

    TKUnit.assertAreClose(view.layoutLeft, left, DELTA, name + "left");
    TKUnit.assertAreClose(view.layoutTop, top, DELTA, name + "top");
    TKUnit.assertAreClose(view.layoutWidth, width, DELTA, name + "width");
    TKUnit.assertAreClose(view.layoutHeight, height, DELTA, name + "height");
}

export function dp(value: number): number {
    return utils.layout.toDeviceIndependentPixels(value);
}

export function dip(value: number): number {
    return utils.layout.toDevicePixels(value);
}