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February 2023 Release of the APL 2023.1 compliant APL Viewhost Web
For more details on this release refer to CHANGELOG.md To learn about APL see: https://developer.amazon.com/docs/alexa-presentation-language/understand-apl.html
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| /*! | ||
| * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| import APLRenderer from './APLRenderer'; | ||
| import { EventType } from './enums/EventType'; | ||
| import { DataSourceFetchRequest } from './events/DataSourceFetchRequest'; | ||
| import { ExtensionEvent } from './events/ExtensionEvent'; | ||
| import { Finish } from './events/Finish'; | ||
| import { Focus } from './events/Focus'; | ||
| import { LineHighlight } from './events/LineHighlight'; | ||
| import { MediaRequest } from './events/MediaRequest'; | ||
| import { OpenUrl } from './events/OpenUrl'; | ||
| import { ReInflate} from './events/ReInflate'; | ||
| import { RequestLineBounds } from './events/RequestLineBounds'; | ||
| import { SendEvent } from './events/SendEvent'; | ||
|
|
||
| /** | ||
| * Creates and executes a command | ||
| * @param event The core engine event | ||
| * @param renderer A reference to the renderer instance | ||
| * @internal | ||
| */ | ||
| export const commandFactory = (event: APL.Event, renderer: APLRenderer) => { | ||
| if (factoryMap[event.getType()]) { | ||
| return factoryMap[event.getType()](event, renderer); | ||
| } | ||
| throw new Error(`Cannot create command with type ${event.getType()}`); | ||
| }; | ||
|
|
||
| const factoryMap = { | ||
| [EventType.kEventTypeSendEvent]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new SendEvent(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| }, | ||
| [EventType.kEventTypeRequestLineBounds]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new RequestLineBounds(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| }, | ||
| [EventType.kEventTypeLineHighlight]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new LineHighlight(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| }, | ||
| [EventType.kEventTypeReinflate]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new ReInflate(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| }, | ||
| [EventType.kEventTypeFinish]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new Finish(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| }, | ||
| [EventType.kEventTypeFocus]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new Focus(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| }, | ||
| [EventType.kEventTypeOpenURL]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new OpenUrl(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| }, | ||
| [EventType.kEventTypeDataSourceFetchRequest]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new DataSourceFetchRequest(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| }, | ||
| [EventType.kEventTypeExtension]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new ExtensionEvent(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| }, | ||
| [EventType.kEventTypeMediaRequest]: (event: APL.Event, renderer: APLRenderer) => { | ||
| const command = new MediaRequest(event, renderer); | ||
| command.execute(); | ||
| return command; | ||
| } | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| /* | ||
| * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| 'use strict'; | ||
|
|
||
| import { Filter, generateSVGFeImage, isIndexOutOfBound } from '../../utils/FilterUtils'; | ||
| import { SVG_NS, uuidv4 } from '../Component'; | ||
| import { BITMAP_IMAGE_REGEX_CHECK, IBaseFilter, IImageFilterElement } from './ImageFilter'; | ||
|
|
||
| /** | ||
| * @ignore | ||
| */ | ||
| export interface IBlur extends IBaseFilter { | ||
| radius: number; | ||
| source: number; | ||
| } | ||
|
|
||
| /* | ||
| * Apply a Gaussian blur with a specified radius. The new image is appended to the end of the array. | ||
| * Specs: https://developer.amazon.com/en-US/docs/alexa/alexa-presentation-language/apl-filters.html#blur | ||
| * Utilize svg <feGaussianBlur> filter | ||
| * https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feGaussianBlur | ||
| */ | ||
| export function getBlurFilter(filter: Filter, imageSrcArray: string[]): IImageFilterElement | undefined { | ||
| const blurId: string = uuidv4().toString(); | ||
| let filterImageArray: SVGFEImageElement[] = []; | ||
| const blur: SVGElement = document.createElementNS(SVG_NS, 'feGaussianBlur'); | ||
| blur.setAttributeNS('', 'stdDeviation', (filter as IBlur).radius.toString()); | ||
| blur.setAttributeNS('', 'result', blurId); | ||
| /* | ||
| * All filters that operate on a single image have a default image source property of -1; | ||
| * that is, by default they take as input the last image in the image array. | ||
| */ | ||
| let index: number = (filter as IBlur).source; | ||
|
|
||
| // Negative case : index outside source array bounds. return undefined | ||
| if (isIndexOutOfBound(index, imageSrcArray.length)) { | ||
| return undefined; | ||
| } | ||
| if (index < 0) { | ||
| index += imageSrcArray.length; | ||
| } | ||
| const imageId: string = imageSrcArray[index]; | ||
| if (imageId.match(BITMAP_IMAGE_REGEX_CHECK)) { | ||
| filterImageArray = generateSVGFeImage(imageId, blur); | ||
| } else { | ||
| blur.setAttributeNS('', 'in', imageId); | ||
| } | ||
| return { filterId: blurId, filterElement: blur, filterImageArray }; | ||
| } |
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