{
  "version": 3,
  "sources": ["libs/image-transformation/src/lib/image-transformation.service.ts", "libs/image-transformation/src/lib/image-transformation.module.ts", "libs/image-transformation/src/lib/image-transformation.ts"],
  "sourcesContent": ["/**\n * This file performs various transformations on provided images or image serving URLs.\n *\n * Usage:\n * In Typescript\n *    private transformation: ImageTransformation = new ImageTransformation()\n *        .crop()\n *        .flipHorizontally(); // Can chain transformation functions indefinitely.\n *    private sizes: number[] = [128, 256, 512];\n *    private url: string = 'https://someurl.com';\n *\n * In HTML\n *    <img [srcset]=\"ImageTransformationService.getSrcSetForImage(url, sizes, transformation)\" />\n */\nimport { Injectable } from '@angular/core';\nimport { ImageTransformation } from './image-transformation';\n\nexport const SERVING_URL_DOMAINS: string[] = ['lh3.googleusercontent.com'];\n\n@Injectable()\nexport class ImageTransformationService {\n  /**\n   * Determines whether the given URL is a Google Serving URL.\n   * @param url The URL to check.\n   * @returns True if it is a Google Serving URL, otherwise False.\n   */\n  public isServingUrl(url: string): boolean {\n    if (url) {\n      for (const s of SERVING_URL_DOMAINS) {\n        const protocolIndex = url.indexOf('://');\n        const domain = protocolIndex > -1 ? url.substring(protocolIndex + 3) : url;\n        if (domain.startsWith(s)) {\n          return true;\n        }\n      }\n    }\n    return false;\n  }\n\n  /**\n   * Generates and returns a new URL that applies the specified transformation(s) to the provided image. If the image\n   * is not a Google Serving URL, it is returned unchanged.\n   * @param baseUrl The URL of the image to apply transformations to.\n   * @param transformation An object containing all of the transformation flags to apply.\n   */\n  public getTransformedImage(baseUrl: string, transformation: ImageTransformation): string {\n    if (!baseUrl) {\n      return null;\n    }\n    const isServingUrl: boolean = this.isServingUrl(baseUrl);\n    if (!isServingUrl || !transformation) {\n      return baseUrl;\n    }\n    const transformationString = transformation.hasFlags() ? `=${transformation.getFlags()}` : '';\n    return `${baseUrl}${transformationString}`;\n  }\n\n  /**\n   * Creates a string of URLs to use as srcset options. One option will be created for each size provided with each option\n   * containing all of the additional flags specified by the ImageTransformation object. If no sizes are provided or if the\n   * baseUrl is not a Google Serving URL, the original baseUrl is returned unchanged.\n   * @param baseUrl The base URL of the image.\n   * @param sizes An array of widths in pixels the image is to be made available in.\n   * @param transformation An optional object containing a set of additional transformation flags to set.\n   *    Omit or use null to display the images with no transformations.\n   */\n  public getSrcSetForImage(\n    baseUrl: string,\n    sizes: number[] = null,\n    transformation: ImageTransformation = null,\n  ): string {\n    if (!baseUrl) {\n      return null;\n    }\n\n    const isServingUrl: boolean = this.isServingUrl(baseUrl);\n    if (!isServingUrl || !sizes || sizes.length === 0) {\n      return baseUrl;\n    }\n\n    let srcset = '';\n    const transformationString = transformation ? transformation.getFlags() : '';\n    sizes.forEach((size) => {\n      if (srcset.length > 0) {\n        srcset += ', ';\n      }\n      srcset += `${baseUrl}=s${size}${transformationString} ${size}w`;\n    });\n    return srcset;\n  }\n}\n", "import { NgModule } from '@angular/core';\n\nimport { ImageTransformationService } from './image-transformation.service';\n\n@NgModule({\n  providers: [ImageTransformationService],\n})\nexport class ImageTransformationModule {}\n", "/**\n * Helper object for building the flags for performing one or many various transformations on an image served by Google.\n * Intended to be used in conjunction with the ImageTransformationService.\n *\n * Google's image transformation API is not very well documented at the moment so all of these flags have come from\n * https://stackoverflow.com/questions/25148567/list-of-all-the-app-engine-images-service-get-serving-url-uri-options.\n *\n * Usage:\n * In Typescript\n *    private transformation: ImageTransformation = new ImageTransformation()\n *        .crop()\n *        .flipHorizontally(); // Can chain transformation functions indefinitely.\n *    private sizes: number[] = [128, 256, 512];\n *    private url: string = 'https://someurl.com';\n *\n * In HTML\n *    <img [srcset]=\"ImageTransformationService.getSrcSetForImage(url, sizes, transformation)\" />\n */\n\nexport class ImageTransformation {\n  private flags: string;\n\n  constructor() {\n    this.flags = '';\n  }\n\n  /**\n   * Adds a flag, specifying that the image should be resized using the provided size. The size will be applied to the\n   * largest dimension (height for images in portrait and width for images in landscape).\n   * @param size The size in pixels that the longest side should be set to.\n   */\n  resize(size: number): ImageTransformation {\n    this.flags += `s${size}`;\n    return this;\n  }\n\n  /**\n   * Adds a flag, specifying that the image should be cropped to be a square whose size depends on the size of the shortest side.\n   */\n  crop(): ImageTransformation {\n    this.flags += '-c';\n    return this;\n  }\n\n  /**\n   * Same as crop() except the image attempts to crop around faces.\n   */\n  smartCrop(): ImageTransformation {\n    this.flags += '-p';\n    return this;\n  }\n\n  /**\n   * Same as crop() except the image is cropped as a circle instead of a square.\n   */\n  circularCrop(): ImageTransformation {\n    this.flags += '-cc';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the image should be flipped vertically.\n   */\n  flipVertically(): ImageTransformation {\n    this.flags += '-fv';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the image should be flipped horiztonally.\n   */\n  flipHorizontally(): ImageTransformation {\n    this.flags += '-fh';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the image should be rotated the specified number of degrees.\n   * @param degrees How many degrees the image should be rotated by. Should be one of 90, 180 or 270.\n   */\n  rotate(degrees: 90 | 180 | 270): ImageTransformation {\n    this.flags += `-r${degrees}`;\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the image should be rendered as a JPEG.\n   */\n  renderAsJpeg(): ImageTransformation {\n    this.flags += '-rj';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the image should be rendered as a PNG\n   */\n  renderAsPng(): ImageTransformation {\n    this.flags += '-rp';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the image should be rendered as a WEBP\n   */\n  renderAsWebP(): ImageTransformation {\n    this.flags += '-rw';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the image should be rendered as a GIF\n   */\n  renderAsGif(): ImageTransformation {\n    this.flags += '-rg';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that a GIF should be converted into and rendered as an MP4 movie.\n   */\n  makeMp4(): ImageTransformation {\n    this.flags += '-rh';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that a GIF should not be animated and show a static image instead.\n   */\n  killAnimation(): ImageTransformation {\n    this.flags += '-k';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that a border of the specified width should be added to the image.\n   * @param width The width of the border in pixels.\n   */\n  addBorder(width: number): ImageTransformation {\n    this.flags += `-b${width}`;\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying what the colour of the border should be.\n   * @param argbHex The hexadecimal representation of the colour, in the format AARRGGBB.\n   */\n  setBorderColour(argbHex: string): ImageTransformation {\n    this.flags += `-c0x${argbHex}`;\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the image should include a header to cause the browser to download it.\n   */\n  makeDownloadable(): ImageTransformation {\n    this.flags += '-d';\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the quality of the rendered JPEG image should be set to the specified percent.\n   * @param qualityPercent A number from 0-100 representing the percent of quality the JPEG should be.\n   */\n  setJpegQuality(qualityPercent: number): ImageTransformation {\n    this.flags += `-l${qualityPercent}`;\n    return this;\n  }\n\n  /**\n     * Adds a flag specifying that the image should be softened by the specified amount.\n     * @param softenPct\n\n     */\n  soften(softenPct: number): ImageTransformation {\n    this.flags += `-fSoften=1,${softenPct},0`;\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that a vignette should be added to the image with the specified size and colour.\n   * @param gradientSize\n   * @param argbHex\n   */\n  vignette(gradientSize: number, argbHex: string): ImageTransformation {\n    this.flags += `-fVignette=1,${gradientSize},1.4,0,${argbHex}`;\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the colours in the image should be inverted.\n   */\n  invert(): ImageTransformation {\n    this.flags += `-fInvert=1`;\n    return this;\n  }\n\n  /**\n   * Adds a flag specifying that the image should be converted to black and white.\n   */\n  blackAndWhite(): ImageTransformation {\n    this.flags += `-fbw=1`;\n    return this;\n  }\n\n  /**\n   * Returns the current set of flags that have been set as a single string that can be appended to a serving URL.\n   */\n  getFlags(): string {\n    return this.flags;\n  }\n\n  /**\n   * Gets a value indicating whether this transformation currently has any flags set.\n   */\n  hasFlags(): boolean {\n    return this.flags.length > 0;\n  }\n}\n"],
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}