fabric/dist/src/filters/Saturation.mjs.map

Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.

{"version":3,"file":"Saturation.mjs","sources":["../../../src/filters/Saturation.ts"],"sourcesContent":["import { BaseFilter } from './BaseFilter';\nimport type { T2DPipelineState, TWebGLUniformLocationMap } from './typedefs';\nimport { classRegistry } from '../ClassRegistry';\nimport { fragmentSource } from './shaders/saturation';\n\nexport type SaturationOwnProps = {\n  saturation: number;\n};\n\nexport const saturationDefaultValues: SaturationOwnProps = {\n  saturation: 0,\n};\n\n/**\n * Saturate filter class\n * @example\n * const filter = new Saturation({\n *   saturation: 1\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\nexport class Saturation extends BaseFilter<'Saturation', SaturationOwnProps> {\n  /**\n   * Saturation value, from -1 to 1.\n   * Increases/decreases the color saturation.\n   * A value of 0 has no effect.\n   *\n   * @param {Number} saturation\n   * @default\n   */\n  declare saturation: SaturationOwnProps['saturation'];\n\n  static type = 'Saturation';\n\n  static defaults = saturationDefaultValues;\n\n  static uniformLocations = ['uSaturation'];\n\n  getFragmentSource() {\n    return fragmentSource;\n  }\n\n  /**\n   * Apply the Saturation operation to a Uint8ClampedArray representing the pixels of an image.\n   *\n   * @param {Object} options\n   * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n   */\n  applyTo2d({ imageData: { data } }: T2DPipelineState) {\n    const adjust = -this.saturation;\n    for (let i = 0; i < data.length; i += 4) {\n      const r = data[i];\n      const g = data[i + 1];\n      const b = data[i + 2];\n      const max = Math.max(r, g, b);\n      data[i] += max !== r ? (max - r) * adjust : 0;\n      data[i + 1] += max !== g ? (max - g) * adjust : 0;\n      data[i + 2] += max !== b ? (max - b) * adjust : 0;\n    }\n  }\n\n  /**\n   * Send data from this filter to its shader program's uniforms.\n   *\n   * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n   * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n   */\n  sendUniformData(\n    gl: WebGLRenderingContext,\n    uniformLocations: TWebGLUniformLocationMap,\n  ) {\n    gl.uniform1f(uniformLocations.uSaturation, -this.saturation);\n  }\n\n  isNeutralState() {\n    return this.saturation === 0;\n  }\n}\n\nclassRegistry.setClass(Saturation);\n"],"names":["saturationDefaultValues","saturation","Saturation","BaseFilter","getFragmentSource","fragmentSource","applyTo2d","_ref","imageData","data","adjust","i","length","r","g","b","max","Math","sendUniformData","gl","uniformLocations","uniform1f","uSaturation","isNeutralState","_defineProperty","classRegistry","setClass"],"mappings":";;;;;AASO,MAAMA,uBAA2C,GAAG;AACzDC,EAAAA,UAAU,EAAE,CAAA;AACd,EAAC;;AAED;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACO,MAAMC,UAAU,SAASC,UAAU,CAAmC;AAiB3EC,EAAAA,iBAAiBA,GAAG;AAClB,IAAA,OAAOC,cAAc,CAAA;AACvB,GAAA;;AAEA;AACF;AACA;AACA;AACA;AACA;EACEC,SAASA,CAAAC,IAAA,EAA4C;IAAA,IAA3C;AAAEC,MAAAA,SAAS,EAAE;AAAEC,QAAAA,IAAAA;AAAK,OAAA;AAAoB,KAAC,GAAAF,IAAA,CAAA;AACjD,IAAA,MAAMG,MAAM,GAAG,CAAC,IAAI,CAACT,UAAU,CAAA;AAC/B,IAAA,KAAK,IAAIU,CAAC,GAAG,CAAC,EAAEA,CAAC,GAAGF,IAAI,CAACG,MAAM,EAAED,CAAC,IAAI,CAAC,EAAE;AACvC,MAAA,MAAME,CAAC,GAAGJ,IAAI,CAACE,CAAC,CAAC,CAAA;AACjB,MAAA,MAAMG,CAAC,GAAGL,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,CAAA;AACrB,MAAA,MAAMI,CAAC,GAAGN,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,CAAA;MACrB,MAAMK,GAAG,GAAGC,IAAI,CAACD,GAAG,CAACH,CAAC,EAAEC,CAAC,EAAEC,CAAC,CAAC,CAAA;AAC7BN,MAAAA,IAAI,CAACE,CAAC,CAAC,IAAIK,GAAG,KAAKH,CAAC,GAAG,CAACG,GAAG,GAAGH,CAAC,IAAIH,MAAM,GAAG,CAAC,CAAA;AAC7CD,MAAAA,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,IAAIK,GAAG,KAAKF,CAAC,GAAG,CAACE,GAAG,GAAGF,CAAC,IAAIJ,MAAM,GAAG,CAAC,CAAA;AACjDD,MAAAA,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,IAAIK,GAAG,KAAKD,CAAC,GAAG,CAACC,GAAG,GAAGD,CAAC,IAAIL,MAAM,GAAG,CAAC,CAAA;AACnD,KAAA;AACF,GAAA;;AAEA;AACF;AACA;AACA;AACA;AACA;AACEQ,EAAAA,eAAeA,CACbC,EAAyB,EACzBC,gBAA0C,EAC1C;IACAD,EAAE,CAACE,SAAS,CAACD,gBAAgB,CAACE,WAAW,EAAE,CAAC,IAAI,CAACrB,UAAU,CAAC,CAAA;AAC9D,GAAA;AAEAsB,EAAAA,cAAcA,GAAG;AACf,IAAA,OAAO,IAAI,CAACtB,UAAU,KAAK,CAAC,CAAA;AAC9B,GAAA;AACF,CAAA;AAvDE;AACF;AACA;AACA;AACA;AACA;AACA;AACA;AAPEuB,eAAA,CADWtB,UAAU,EAAA,MAAA,EAWP,YAAY,CAAA,CAAA;AAAAsB,eAAA,CAXftB,UAAU,EAAA,UAAA,EAaHF,uBAAuB,CAAA,CAAA;AAAAwB,eAAA,CAb9BtB,UAAU,EAeK,kBAAA,EAAA,CAAC,aAAa,CAAC,CAAA,CAAA;AA2C3CuB,aAAa,CAACC,QAAQ,CAACxB,UAAU,CAAC;;;;"}