RCCPhotoGrid help for the current build.

Get ( UUID )

GetContainerAttribute ( Photo | Container ; "FileName" )

List of: __ID Photo

Container field. No calculation.

Let ( [
  trigger = _trigger_Last Modification ;

  photo = RCC PhotoGrid::Photo | Container ;
  gridPreview = GetThumbnail ( photo ; 320 ; 320 ) ;
  fileName = GetContainerAttribute ( photo ; "filename" ) ;
  fileLower = Lower ( fileName ) ;
  extension = Lower ( RightWords ( Substitute ( fileName ; "." ; " " ) ; 1 ) ) ;

  // Container attributes
  fileSize = GetContainerAttribute ( photo ; "fileSize" ) ;
  width = GetContainerAttribute ( photo ; "width" ) ;
  height = GetContainerAttribute ( photo ; "height" ) ;
  dpiWidth = GetContainerAttribute ( photo ; "dpiWidth" ) ;
  dpiHeight = GetContainerAttribute ( photo ; "dpiHeight" ) ;

  // Browser/QuickLook type hint
  mime = Case (
    PatternCount ( fileLower ; ".pdf" ) ; "application/pdf" ;
    PatternCount ( fileLower ; ".png" ) ; "image/png" ;
    PatternCount ( fileLower ; ".gif" ) ; "image/gif" ;
    PatternCount ( fileLower ; ".webp" ) ; "image/webp" ;
    "image/jpeg"
  ) ;

  // Small grid thumbnail only
  thumb = Case (
    IsEmpty ( photo ) or IsEmpty ( gridPreview ) ;
      "" ;
    "data:image/jpeg;base64," & Base64EncodeRFC ( 4648 ; gridPreview )
  )
] ;
  Case (
    IsEmpty ( photo ) ;
      "" ;
    JSONSetElement ( "{}" ;

      [ "id" ; __ID Photo ; JSONString ] ;
      [ "title" ; fileName ; JSONString ] ;
      [ "subtitle" ; RCC PhotoGrid::Caption ; JSONString ] ;
      [ "thumbnail" ; thumb ; JSONString ] ;
      [ "mime" ; mime ; JSONString ] ;
      [ "extension" ; extension ; JSONString ] ;

      // Displayed in the Photo Info HUD
      [ "metadata.File Name" ; fileName ; JSONString ] ;
      [ "metadata.Extension" ; extension ; JSONString ] ;
      [ "metadata.MIME" ; mime ; JSONString ] ;
      [ "metadata.File Size" ; fileSize ; JSONString ] ;
      [ "metadata.Width" ; width ; JSONString ] ;
      [ "metadata.Height" ; height ; JSONString ] ;
      [ "metadata.Image DPI" ; dpiWidth & " x " & dpiHeight ; JSONString ] ;
      [ "metadata.Storage Type" ; GetContainerAttribute ( photo ; "storageType" ) ; JSONString ] ;
      [ "metadata.MD5" ; GetContainerAttribute ( photo ; "MD5" ) ; JSONString ] ;
      [ "metadata.Orientation" ; GetContainerAttribute ( photo ; "orientation" ) ; JSONString ] ;
      [ "metadata.Created" ; GetContainerAttribute ( photo ; "created" ) ; JSONString ] ;
      [ "metadata.Modified" ; GetContainerAttribute ( photo ; "modified" ) ; JSONString ] ;
      [ "metadata.Camera Make" ; GetContainerAttribute ( photo ; "make" ) ; JSONString ] ;
      [ "metadata.Camera Model" ; GetContainerAttribute ( photo ; "model" ) ; JSONString ] ;
      [ "metadata.Latitude" ; GetContainerAttribute ( photo ; "latitude" ) ; JSONString ] ;
      [ "metadata.Longitude" ; GetContainerAttribute ( photo ; "longitude" ) ; JSONString ] ;

      [ "isPhoto" ; not IsEmpty ( GetContainerAttribute ( photo ; "image" ) ) ; JSONBoolean ] ;
      [ "selected" ; False ; JSONBoolean ]
    )
  )
)

/*
RCC PhotoGrid Item JSON

Purpose:
  This calculation builds one JSON object for one FileMaker photo record.
  The load script later collects these per-record JSON objects into one JSON array
  and sends that array to RCC.PhotoGrid.SetData.

Why this is fast:
  The grid receives a small 320 x 320 thumbnail, not the full container file.
  The full container is read later only when the user opens QuickLook / Photo view.

Core keys used by PhotoGrid:
  id
    Stable record key. This must match the field used by open, save, delete,
    and drag-export scripts.

  title
    Main display title. Usually the container filename.

  subtitle
    Secondary display text. Usually the caption.

  thumbnail
    Browser-safe data URL used in Grid, List, and HorizontalView.

  mime
    Type hint used for filtering and preview behavior.

  extension
    File extension used by list/horizontal display chips.

  isPhoto
    Boolean hint. True lets PhotoGrid know this item can enter Photo editor mode.

  selected
    Initial selection state.

Metadata keys:
  Any key under "metadata." appears in the Photo Info HUD.
  Example:
    "metadata.File Name"
    "metadata.Camera Model"
    "metadata.Latitude"

Thumbnail size note:
  The grid thumbnail is generated at 320 x 320 because it is a good balance between speed and visual quality.
  PhotoGrid only needs this thumbnail for Grid, List, and HorizontalView display. The full container is loaded later, only when the user opens the item in Photo view or QuickLook.
  You can increase 320 x 320 if you want sharper thumbnails, but loading will be slower and the JSON payload will be larger.
  You can decrease 320 x 320 if you want faster loading, but thumbnails may look softer, especially at larger zoom sizes.

Trigger variable:
  trigger = _trigger_Last Modification
  This makes the stored auto-enter calculation refresh when your trigger field changes.
*/

List of: PhotoGrid Item JSON