ov-components: enhance layout service with responsive viewport handling and layout options adjustment

openvidu-components-angular/projects/openvidu-components-angular/src/lib/services/layout/layout.service.ts

@@ -1,8 +1,9 @@
-import { Injectable } from '@angular/core';
+import { Injectable, effect } from '@angular/core';
 import { BehaviorSubject, Observable } from 'rxjs';
 import { LayoutAlignment, LayoutClass, OpenViduLayout, OpenViduLayoutOptions } from '../../models/layout.model';
 import { ILogger } from '../../models/logger.model';
 import { LoggerService } from '../logger/logger.service';
+import { ViewportService } from '../viewport/viewport.service';
 
 /**
  * @internal
@@ -16,14 +17,19 @@ export class LayoutService {
 	captionsTogglingObs: Observable<boolean>;
 	protected layoutWidth: BehaviorSubject<number> = new BehaviorSubject(0);
 	protected openviduLayout: OpenViduLayout | undefined;
-	protected openviduLayoutOptions: OpenViduLayoutOptions;
+	protected openviduLayoutOptions!: OpenViduLayoutOptions;
 	protected captionsToggling: BehaviorSubject<boolean> = new BehaviorSubject(false);
 	protected log: ILogger;
 
-	constructor(protected loggerSrv: LoggerService) {
+	constructor(
+		protected loggerSrv: LoggerService,
+		protected viewportSrv: ViewportService
+	) {
 		this.layoutWidthObs = this.layoutWidth.asObservable();
 		this.captionsTogglingObs = this.captionsToggling.asObservable();
 		this.log = this.loggerSrv.get('LayoutService');
+		this.openviduLayoutOptions = this.getOptions();
+		this.setupViewportListener();
 	}
 
 	initialize(container: HTMLElement) {
@@ -43,6 +49,7 @@ export class LayoutService {
 	update(timeout: number | undefined = undefined) {
 		const updateAux = () => {
 			if (this.openviduLayout && this.layoutContainer) {
+				this.openviduLayoutOptions = this.getOptions();
 				this.openviduLayout.updateLayout(this.layoutContainer, this.openviduLayoutOptions);
 				this.sendLayoutWidthEvent();
 			}
@@ -54,6 +61,10 @@ export class LayoutService {
 		}
 	}
 
+	updateResponsive() {
+		this.updateLayoutOptions();
+	}
+
 	getLayout() {
 		return this.openviduLayout;
 	}
@@ -62,27 +73,33 @@ export class LayoutService {
 		this.openviduLayout = undefined;
 	}
 
+	/**
+	 * Get layout options adjusted to the current viewport
+	 * @returns Layout options adjusted to the current viewport
+	 */
 	protected getOptions(): OpenViduLayoutOptions {
-		const options = {
-			maxRatio: 3 / 2, // The narrowest ratio that will be used (default 2x3)
-			minRatio: 9 / 16, // The widest ratio that will be used (default 16x9)
-			fixedRatio: false /* If this is true then the aspect ratio of the video is maintained
-      and minRatio and maxRatio are ignored (default false) */,
-			bigClass: LayoutClass.BIG_ELEMENT, // The class to add to elements that should be sized bigger
+		const ratios = this.getResponsiveRatios();
+		const percentages = this.getResponsivePercentages();
+
+		return {
+			maxRatio: ratios.maxRatio,
+			minRatio: ratios.minRatio,
+			fixedRatio: false,
+			bigClass: LayoutClass.BIG_ELEMENT,
 			smallClass: LayoutClass.SMALL_ELEMENT,
 			ignoredClass: LayoutClass.IGNORED_ELEMENT,
-			bigPercentage: 0.8, // The maximum percentage of space the big ones should take up
-			minBigPercentage: 0, // If this is set then it will scale down the big space if there is left over whitespace down to this minimum size
-			bigFixedRatio: false, // fixedRatio for the big ones
-			bigMaxRatio: 9 / 16, // The narrowest ratio to use for the big elements (default 2x3)
-			bigMinRatio: 9 / 16, // The widest ratio to use for the big elements (default 16x9)
-			bigFirst: true, // Whether to place the big one in the top left (true) or bottom right
-			animate: true, // Whether you want to animate the transitions. Deprecated property, to disable it remove the transaction property on OV_publisher css class
+			bigPercentage: percentages.bigPercentage,
+			minBigPercentage: percentages.minBigPercentage,
+			bigFixedRatio: false,
+			bigMaxRatio: ratios.bigMaxRatio,
+			bigMinRatio: ratios.bigMinRatio,
+			bigFirst: true,
+			animate: true,
 			alignItems: LayoutAlignment.CENTER,
 			bigAlignItems: LayoutAlignment.CENTER,
 			smallAlignItems: LayoutAlignment.CENTER,
-			maxWidth: Infinity, // The maximum width of the elements
-			maxHeight: Infinity, // The maximum height of the elements
+			maxWidth: Infinity,
+			maxHeight: Infinity,
 			smallMaxWidth: Infinity,
 			smallMaxHeight: Infinity,
 			bigMaxWidth: Infinity,
@@ -90,7 +107,134 @@ export class LayoutService {
 			scaleLastRow: true,
 			bigScaleLastRow: true
 		};
-		return options;
+	}
+
+	protected getResponsiveRatios() {
+		const isMobile = this.viewportSrv.isMobile();
+		const isTablet = this.viewportSrv.isTablet();
+		const isPortrait = this.viewportSrv.isPortrait();
+
+		if (isMobile && isPortrait) {
+			return {
+				maxRatio: 5 / 4,
+				minRatio: 4 / 5,
+				bigMaxRatio: 5 / 4,
+				bigMinRatio: 3 / 4
+			};
+		}
+
+		if (isMobile) {
+			return {
+				maxRatio: 16 / 9,
+				minRatio: 3 / 4,
+				bigMaxRatio: 16 / 9,
+				bigMinRatio: 4 / 3
+			};
+		}
+
+		if (isTablet && isPortrait) {
+			return {
+				maxRatio: 4 / 3,
+				minRatio: 3 / 5,
+				bigMaxRatio: 4 / 3,
+				bigMinRatio: 9 / 16
+			};
+		}
+
+		if (isTablet) {
+			return {
+				maxRatio: 16 / 9,
+				minRatio: 2 / 3,
+				bigMaxRatio: 16 / 9,
+				bigMinRatio: 9 / 16
+			};
+		}
+
+		return {
+			maxRatio: 16 / 9,
+			minRatio: 9 / 16,
+			bigMaxRatio: 16 / 9,
+			bigMinRatio: 9 / 16
+		};
+	}
+
+	protected getResponsivePercentages() {
+		const isMobile = this.viewportSrv.isMobile();
+		const isTablet = this.viewportSrv.isTablet();
+		const isPortrait = this.viewportSrv.isPortrait();
+
+		if (isMobile && isPortrait) {
+			return {
+				bigPercentage: 0.85,
+				minBigPercentage: 0.7
+			};
+		}
+
+		if (isMobile) {
+			return {
+				bigPercentage: 0.82,
+				minBigPercentage: 0.65
+			};
+		}
+
+		if (isTablet && isPortrait) {
+			return {
+				bigPercentage: 0.83,
+				minBigPercentage: 0.6
+			};
+		}
+
+		if (isTablet) {
+			return {
+				bigPercentage: 0.81,
+				minBigPercentage: 0.55
+			};
+		}
+
+		return {
+			bigPercentage: 0.8,
+			minBigPercentage: 0.5
+		};
+	}
+
+	protected setupViewportListener(): void {
+		effect(() => {
+			const viewportInfo = this.viewportSrv.viewportInfo();
+			const isMobile = this.viewportSrv.isMobile();
+			const orientation = this.viewportSrv.orientation();
+			this.updateLayoutOptions();
+		});
+	}
+
+	protected updateLayoutOptions(): void {
+		const newOptions = this.getOptions();
+
+		if (this.hasSignificantChanges(this.openviduLayoutOptions, newOptions)) {
+			this.openviduLayoutOptions = newOptions;
+
+			if (this.openviduLayout && this.layoutContainer) {
+				this.openviduLayout.updateLayout(this.layoutContainer, this.openviduLayoutOptions);
+				this.sendLayoutWidthEvent();
+			}
+		}
+	}
+
+	protected hasSignificantChanges(oldOptions: OpenViduLayoutOptions, newOptions: OpenViduLayoutOptions): boolean {
+		if (!oldOptions) return true;
+
+		const significantProps: (keyof OpenViduLayoutOptions)[] = [
+			'maxRatio',
+			'minRatio',
+			'bigMaxRatio',
+			'bigMinRatio',
+			'bigPercentage',
+			'alignItems',
+			'bigAlignItems'
+		];
+
+		return significantProps.some(
+			(prop) => Math.abs((oldOptions[prop] as number) - (newOptions[prop] as number)) > 0.01 || oldOptions[prop] !== newOptions[prop]
+		);
 	}
 
 	protected sendLayoutWidthEvent() {