STRICH Barcode Scanning SDK API Reference
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    Interface OverlayConfiguration

    Overlay configuration

    interface OverlayConfiguration {
        cornerRadius?: number;
        customLogoSize?: Size;
        customLogoSrc?: string | null;
        detectionBorderColor?: string;
        detectionBorderWidth?: number;
        detectionFillColor?: string;
        filterCameras?: boolean;
        focusOnTap?: boolean;
        maskColor?: string;
        primaryColor?: string;
        showCameraSelector?: boolean;
        showDetections?: boolean;
        showFlashlight?: boolean;
        showTargetingLine?: boolean;
        showZoom?: boolean;
        targetingLineActiveColor?: string;
        viewfinderBorderWidth?: number;
        viewfinderCornerRadius?: number;
        zoomOnDoubleTap?: boolean;
    }
    Index

    Properties

    cornerRadius?: number

    Corner radius in pixels for rectangular elements such as viewfinder and camera selector.

    The allowed range of the corner radius is 0 to 8 pixels.

    0
    
    customLogoSize?: Size

    The size (in CSS pixels) used to render the custom logo.

    Example:

    configuration.overlay.customLogoSize = { width: 80, height: 20 };
    

    When providing a custom logo in a raster image format such as PNG, JPEG or WEBP, the image will be scaled to fit the specified dimensions. In this case, it's recommended to provide a high-resolution (2x or 3x) raster image.

    customLogoSrc?: string | null

    Override the STRICH logo displayed in the bottom-right corner with a custom image.

    This capability is only available for Enterprise licenses. Please note that attempting to hide or replace the STRICH logo by other means is a violation of the License Agreement.

    The image should ideally be supplied in SVG format, either inline as a data URL or as an absolute HTTPS URL.

    The image will be rendered at its intrinsic size (pixel size = CSS size), which can lead to blurriness on high-density screens if the image is not supplied in SVG format.

    Setting the property to null will display no logo at all.

    detectionBorderColor?: string

    Color to use for drawing a border around the area of detected barcodes. Must be specified in rgb() format, with the color components given as integers with no separating whitespace. The border will become transparent when the detection becomes stale.

    Only has an effect if OverlayConfiguration.showDetections is true.

    undefined
    
    detectionBorderWidth?: number

    The border width in pixels to use for drawing a border around the area of detected barcodes.

    The allowed range is 0 to 4 pixels. Values outside the range are clamped.

    0
    
    detectionFillColor?: string

    Color to use for filling area of detected barcodes. Must be specified in rgb() format, with the color components given as integers with no separating whitespace. The fill will become transparent when the detection becomes stale.

    Only has an effect if OverlayConfiguration.showDetections is true.

    rgb(0,0,255)
    
    filterCameras?: boolean

    Filter cameras returned by the browser.

    If set to true, only cameras that are deemed appropriate for barcode scanning will be offered in the camera selector.

    true
    
    focusOnTap?: boolean

    Indicate if single-tapping the overlay should attempt to trigger autofocus.

    Triggering autofocus is currently only available on Android devices.

    true
    
    maskColor?: string

    Color to use for de-emphasizing the area around the viewfinder.

    The color will be used to create a mask around the viewfinder/region of interest to aid the user in focusing the camera on the barcode.

    A semi-translucent dark color works best, e.g. rgba(0,0,0,0.5) would use a semi-translucent black.

    undefined
    
    primaryColor?: string

    Color to use for drawing UI elements such as the viewfinder and camera selector. Must be specified in rgb() format, with the color components given as integers with no separating whitespace.

    rgb(255,255,255)
    
    showCameraSelector?: boolean

    Indicate if the camera selector should be shown in the overlay.

    true
    
    showDetections?: boolean

    Indicate if the overlay should draw the bounding boxes of detected barcodes on top of the camera preview.

    true
    
    showFlashlight?: boolean

    Indicate if the flashlight toggle should be shown in the overlay.

    Flashlight functionality is not supported in some browsers.

    true
    
    showTargetingLine?: boolean

    Indicate if a horizontal line should be drawn to aid in positioning 1D barcodes.

    true
    
    showZoom?: boolean

    Indicate if the zoom control should be shown in the overlay.

    This is only supported for browsers that support the 'zoom' constraint, see: https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints#zoom Notably, Safari versions earlier than 17.4 and Firefox do not support this feature.

    true
    
    targetingLineActiveColor?: string

    Color to use for drawing the horizontal targeting line when a barcode was detected. Must be specified in rgb() format, with the color components given as integers with no separating whitespace.

    rgb(255,0,0)
    
    viewfinderBorderWidth?: number

    Border width in pixels of the viewfinder, the rectangle around the region of interest.

    The allowed range is 1 to 20 pixels. Values outside the range are clamped.

    1
    
    viewfinderCornerRadius?: number

    Corner radius in pixels of the viewfinder, the rectangle around the region of interest.

    This property applies only to the viewfinder and overrides the OverlayConfiguration.cornerRadius property.

    The allowed range of the corner radius is 0 to 20 pixels.

    0
    
    zoomOnDoubleTap?: boolean

    Indicate if double-tapping the overlay should cause the camera to zoom in.

    This is only supported for browsers that support the 'zoom' constraint, see: https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints#zoom Notably, Safari versions earlier than 17.4 and Firefox do not support this feature.

    true (where supported)