utils library

Functions

areFSEntitiesExist(List<String> paths) → String?
Check if given File or Directory exists at the given paths, if not returns the failed FileSystemEntity path
createDirIfNotExist(String dirPath) → Future<Directory>
Creates Directory in the given dirPath if not exists
createFileIfNotExist(String filePath) → Future<File>
Creates File in the given filePath if not exists
createResizedImage(int iconSize, Image image, {Color? backgroundColor}) → Image
decodeImageFile(String filePath) → Future<Image>
Decodes an image file at filePath.
encodePngOptimized(Image image, {required bool optimize}) → List<int>
PNG encoder honoring the optimize_png opt-in (upstream #139 / #199). When optimize is true, the image package's max-compression level (9) is used; otherwise its default (level 6) preserves the existing fast generate behavior. Lossless either way.
flavorConfigFile(String flavor) → String
generateError(Exception e, String? error) → String
imageHasAlphaPixel(Image image) → bool
True if the decoded image has at least one non-opaque pixel. Short-circuits on the first match. Used by doctor / strict mode for the iOS App Store alpha-rejection rule (upstream #172).
isHexColorLiteral(String value) → bool
True if the value is a hex color literal (any of the forms above).
isNonSquare(Image image) → bool
True if image is not square (width != height). Used by doctor / strict mode to warn about non-square sources, which the resize step silently squishes today (upstream #214).
letterBoxToSquare(Image image, Color backgroundColor) → Image
Pads a non-square image onto a square canvas of side max(w, h) filled with backgroundColor and centers the source on it. Returns image unchanged when it is already square (idempotent — safe to call multiple times, e.g. by both a platform writer that pre-pads and a downstream createResizedImage call that also has a background color).
parseHexColor(String value) → ColorUint8
Parses a #RRGGBB or #RRGGBBAA (or unprefixed) hex string into a ColorUint8. Throws InvalidConfigException for malformed input.
prettifyJsonEncode(Object? map) → String
Returns a prettified json string