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The path is an array of array of 2 numbers. * The def.x specifies element in the sub array is the x, and similary the def.y * defines the y. * typical values 0, 1, 'x', 'y' */ interface QuaggaJSDebugDrawPath { ( path: any[], def: QuaggaJSxyDef, ctx: CanvasRenderingContext2D, style: QuaggaJSStyle ): void } /** * Called to draw debugging Rectangle */ interface QuaggaJSDebugDrawRect { ( pos: any[], size: QuaggaJSRectSize, ctx: CanvasRenderingContext2D, style: QuaggaJSStyle ): void } /** * an object with an x and a y value, the x and y specify which element in * another array is the x or y value. * typical values 0, 1, 'x', 'y' */ interface QuaggaJSxyDef { x: any; y: any; } /** * an object with an x and a y value */ interface QuaggaJSxy { x: number; y: number; } /** * an object with a pair of x and a y values. * Used for giving a htiml canvas context.strokeRect function it's x, y, width * and height values. */ interface QuaggaJSRectSize { pos: QuaggaJSxy; size: QuaggaJSxy; } /** * an object with the styles, color can actually be a color, a gradient or a * pattern (see defintions for context.strokeStyle. But is most commonly a * colour. */ interface QuaggaJSStyle { color: string; /* http://www.w3schools.com/tags/canvas_linewidth.asp */ lineWidth: number; } /** * Pass when creating a ResultCollector */ interface QuaggaJSResultCollector { /** * keep track of the image producing this result */ capture?: boolean; /** * maximum number of results to store */ capacity?: number; /** * a list of codes that should not be recorded. This is effectively a list * of filters that return false. */ blacklist?: QuaggaJSCodeResult; /** * passed a QuaggaJSCodeResult, return true if you want this to be stored, * false if you don't. Note: The black list is effectively a list of filters * that return false. So if you only want to store results that are ean_13, * you would say return codeResult.format==="ean_13" */ filter?: QuaggaJSResultCollectorFilterFunction; /* * a static function that returns you a ResultCollector */ create?(param: QuaggaJSResultCollector): QuaggaJSResultCollector; getResults?(): QuaggaJSCodeResult[]; } /** * used for ResultCollector blacklists and filters */ interface QuaggaJSCodeResult { code?: string; format?: string; } /** * Called to filter which Results to collect in ResultCollector */ interface QuaggaJSResultCollectorFilterFunction { ( data: QuaggaJSCodeResult ): boolean; } /** * The callbacks passed into onProcessed, onDetected and decodeSingle receive a * data object upon execution. The data object contains the following * information. Depending on the success, some fields may be undefined or just * empty. */ interface QuaggaJSResultObject { codeResult: QuaggaJSResultObject_CodeResult; line: { x: number; y: number; }[]; angle: number; pattern: number[]; box: number[][]; boxes: number[][][]; } interface QuaggaJSResultObject_CodeResult { code: string; start: number; end: number; codeset: number; startInfo: { error: number; code: number; start: number; end: number; }; decodedCodes: { error?: number; code: number; start: number; end: number; }[]; endInfo: { error: number; code: number; start: number; end: number; }; direction: number; format: string; } interface QuaggaJSConfigObject { /** * The image path to load from, or a data url * Ex: '/test/fixtures/code_128/image-001.jpg' * or: 'data:image/jpg;base64,' + data */ src?: string; inputStream?: { /** * @default "Live" */ name?: string; /** * @default "LiveStream" */ type?: string; target?: HTMLElement, constraints?: QuaggaJSConstraints; /** * defines rectangle of the detection/localization area. Useful when you * KNOW that certain parts of the image will not contain a barcode, also * useful when you have multiple barcodes in a row and you want to make * sure that only a code in, say the middle quarter is read not codes * above or below */ area?: { /** * @default "0%", set this and bottom to 25% if you only want to * read a 'line' that is in the middle quarter */ top?: string; /** * @default "0%" */ right?: string; /** * @default "0%" */ left?: string; /** * @default "0%", set this and top to 50% if you only want to read a * 'line' that is in the middle half */ bottom?: string; }; singleChannel?: boolean; size?: number; sequence?: boolean; }; /** * @default false */ debug?: boolean; /** * @default true */ locate?: boolean; /** * @default 4 */ numOfWorkers?: number; /** * This top-level property controls the scan-frequency of the video-stream. * It’s optional and defines the maximum number of scans per second. * This renders useful for cases where the scan-session is long-running and * resources such as CPU power are of concern. */ frequency?: number; decoder?: { /** * @default [ "code_128_reader" ] */ readers?: (QuaggaJSReaderConfig | string)[]; debug?: { /** * @default false */ drawBoundingBox?: boolean; /** * @default false */ showFrequency?: boolean; /** * @default false */ drawScanline?: boolean; /** * @default false */ showPattern?: boolean; }; /** * The multiple property tells the decoder if it should continue decoding after finding a valid barcode. * If multiple is set to true, the results will be returned as an array of result objects. * Each object in the array will have a box, and may have a codeResult * depending on the success of decoding the individual box. */ multiple?: boolean; }; locator?: { /** * @default true */ halfSample?: boolean; /** * @default "medium" * Available values: x-small, small, medium, large, x-large */ patchSize?: string; debug?: { /** * @default false */ showCanvas?: boolean; /** * @default false */ showPatches?: boolean; /** * @default false */ showFoundPatches?: boolean; /** * @default false */ showSkeleton?: boolean; /** * @default false */ showLabels?: boolean; /** * @default false */ showPatchLabels?: boolean; /** * @default false */ showRemainingPatchLabels?: boolean; boxFromPatches?: { /** * @default false */ showTransformed?: boolean; /** * @default false */ showTransformedBox?: boolean; /** * @default false */ showBB?: boolean; }; } }; } interface QuaggaJSConstraints { /** * @default 640 */ width?: number; /** * @default 480 */ height?: number; /** * In cases where height/width does not suffice */ aspectRatio?: number /** * @default "environment" */ facingMode?: string; /** * Explicitly set the camera to the user's choice */ deviceId?: string } /** * Used for extending a reader with supplements (ex: EAN-2, EAN-5) */ interface QuaggaJSReaderConfig { format: string; config: { supplements: string[]; } }