ImageSliderPainter class

Custom painter for rendering the ImageSlider track, anchors, borders, and image

This painter handles ALL visual elements of the slider, ensuring perfect alignment since everything uses the same coordinate system.

Inheritance

Constructors

ImageSliderPainter({required double sliderPosition, required double sliderPercentage, required Color color, required double imageWidth, required Color borderColor, required double strokeWidth, required double anchorWidth, required double borderWidth, required int numImages, required double sliderWidth, required int currentPosition, required Map<int, Image> allImages, Image? currentImage})
Creates an ImageSliderPainter with the given configuration

Properties

allImages → Map<int, Image>
All loaded images indexed by position
final
anchorWidth → double
Width of the anchor points along the track
final
borderColor → Color
Color of the slider border
final
borderWidth → double
Width of the border around the slider track
final
color → Color
Color of the slider track and anchors
final
currentImage → Image?
The loaded image to display at the current position
final
currentPosition → int
Current selected position index
final
hashCode → int
The hash code for this object.
no setterinherited
imageWidth → double
Width (and height) of the draggable image indicator
final
numImages → int
Number of images in the slider
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
sliderPercentage → double
Current position of the slider as a percentage (0.0 to 1.0)
final
sliderPosition → double
Current position of the slider along the track (in pixels) - center of image
final
sliderWidth → double
Total width of the slider
final
strokeWidth → double
Width of the stroke used to draw the slider track
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 ImageSliderPainter 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