FocusedAreaOCRPainter class

A custom painter for rendering the focused area and recognized text on a canvas.

Inheritance

Constructors

FocusedAreaOCRPainter({required RecognizedText recognizedText, required Size imageSize, required InputImageRotation rotation, required CameraLensDirection cameraLensDirection, required double focusedAreaWidth, required double focusedAreaHeight, required Offset focusedAreaCenter, required Radius focusedAreaRadius, Paint? focusedAreaPaint, Paint? unfocusedAreaPaint, Paint? textBackgroundPaint, TextStyle? uiTextStyle, Function? onScanText})

Properties

cameraLensDirection → CameraLensDirection
The direction of the camera lens.
final
focusedAreaCenter → Offset
The center position of the focused area.
final
focusedAreaHeight → double
The height of the focused area.
final
focusedAreaPaint → Paint?
The paint to use for drawing the focused area.
final
focusedAreaRadius → Radius
The radius of the focused area's corners.
final
focusedAreaWidth → double
The width of the focused area.
final
hashCode → int
The hash code for this object.
no setterinherited
imageSize → Size
The size of the image.
final
onScanText → Function?
Callback function called when text is scanned.
final
recognizedText → RecognizedText
The recognized text data.
final
rotation → InputImageRotation
The rotation of the image.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
semanticsBuilder → SemanticsBuilderCallback?
Returns a function that builds semantic information for the picture drawn by this painter.
no setterinherited
textBackgroundPaint → Paint?
The paint to use for drawing the background of recognized text.
final
uiTextStyle → TextStyle?
The text style to use for recognized text, using dart:ui's TextStyle instead of material.dart's TextStyle.
final
unfocusedAreaPaint → Paint?
The paint to use for drawing the unfocused area.
final

Methods

addListener(VoidCallback listener) → void
Register a closure to be notified when it is time to repaint.
inherited
hitTest(Offset position) → bool?
Called whenever a hit test is being performed on an object that is using this custom paint delegate.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
paint(Canvas canvas, Size size) → void
Called whenever the object needs to paint. The given Canvas has its coordinate space configured such that the origin is at the top left of the box. The area of the box is the size of the size argument.
override
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that the object notifies when it is time to repaint.
inherited
shouldRebuildSemantics(covariant CustomPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
inherited
shouldRepaint(covariant FocusedAreaOCRPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
override
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited