Usage

Add the Sain composable into your project and customize it according to your needs:

Usage

Add the Sain composable into your project and customize it according to your needs:

var imageBitmap: ImageBitmap? by remember {
    mutableStateOf(null)
}

Sain(
    signatureHeight = 250.dp,
    signaturePadColor = Color.White,
    signatureBorderStroke = BorderStroke(
        width = .5.dp,
        color = MaterialTheme.colorScheme.onSurface,
    ),
    signaturePadShape = RoundedCornerShape(8.dp),
    onComplete = { signatureBitmap ->
        if (signatureBitmap != null) {
            imageBitmap = signatureBitmap
        } else {
            println("Signature is empty")
        }
    },
) { action ->
    Row(
        modifier = Modifier
            .padding(top = 16.dp)
            .fillMaxWidth(),
        horizontalArrangement = Arrangement.spacedBy(16.dp),
    ) {
        Button(
            modifier = Modifier.weight(1f),
            onClick = {
                imageBitmap = null
                action(SignatureAction.CLEAR)
            },
        ) {
            Text("Clear")
        }
        Button(
            modifier = Modifier.weight(1f),
            onClick = {
                action(SignatureAction.COMPLETE)
            },
        ) {
            Text("Complete")
        }
    }
}

Actions

The Sain composable takes in an actions parameter which is a lambda that takes in a SignatureAction enum. The SignatureAction enum has two values: - CLEAR - Clears the signature - COMPLETE - Completes the signature and returns the signature as an ImageBitmap in the onComplete lambda

Customization

• signatureColor - The color of the signature
• signatureThickness - The thickness of the signature
• signatureHeight: The height of the signature pad.
• signaturePadColor: The color of the signature pad.
• signatureBorderStroke: The border stroke of the signature pad.
• signaturePadShape: The shape of the signature pad.
• showGuideline: Whether to show a guideline on the signature pad or not.
• guidelineColor: The color of the guideline.
• guidelineStrokeWidth: The stroke width of the guideline.
• guidelineDashIntervals: The dash intervals of the guideline.
• guidelinePadding: The padding of the guideline from the edges of the signature pad.
• guidelineCornerRadius: The corner radius of the guideline. This is only applicable if the guideline shape is a rounded rectangle.
• hintText: The hint text to show when the signature pad is empty.
• hintTextStyle: The text style of the hint text.