Selection
constructor(highlightTextOffset: Dp = 15.dp, highlightTextSize: TextUnit = 12.sp, highlightTextColor: Color = Color.Black, highlightTextBackgroundColor: Color = Color.Yellow, highlightTextBackgroundAlpha: Float = 0.7f, highlightTextTypeface: Typeface = Typeface.DEFAULT, highlightBarCornerRadius: Dp = 2.dp, highlightBarColor: Color = Color.Black, highlightBarStrokeWidth: Dp = 2.dp, highlightPopUpCornerRadius: CornerRadius = CornerRadius(5f), backgroundColorFilter: ColorFilter? = null, backgroundBlendMode: BlendMode = DrawScope.DefaultBlendMode, backgroundStyle: DrawStyle = Fill, highlightLabelAlignment: Paint.Align = Paint.Align.CENTER, isHighlightBarRequired: Boolean = true, isHighlightFullBar: Boolean = false, popUpLabel: (Float, Float) -> String = { x, y ->
val xLabel = "x : ${x.toInt()} "
val yLabel = "y : ${String.format("%.2f", y)}"
"$xLabel $yLabel"
}, drawPopUp: DrawScope.(Offset, BarData, Float, Float, BarChartType) -> Unit = { selectedOffset, identifiedPoint, centerPointOfBar, selectedXAxisWidth, barChartType ->
val highlightTextPaint = TextPaint().apply {
textSize = highlightTextSize.toPx()
color = highlightTextColor.toArgb()
textAlign = highlightLabelAlignment
typeface = highlightTextTypeface
}
val label = popUpLabel(identifiedPoint.point.x, identifiedPoint.point.y)
drawContext.canvas.nativeCanvas.apply {
val x =
if (barChartType == BarChartType.VERTICAL) centerPointOfBar else selectedXAxisWidth + highlightTextOffset.toPx()
val y =
if (barChartType == BarChartType.VERTICAL) selectedOffset.y else centerPointOfBar
val background = getTextBackgroundRect(
x,
y,
label,
highlightTextPaint
)
drawRoundRect(
color = highlightTextBackgroundColor,
topLeft = Offset(
background.left.toFloat(),
if (barChartType == BarChartType.VERTICAL) background.top.toFloat() - highlightTextOffset.toPx() else (y - background.height() / 2)
),
size = Size(background.width().toFloat(), background.height().toFloat()),
alpha = highlightTextBackgroundAlpha,
cornerRadius = highlightPopUpCornerRadius,
colorFilter = backgroundColorFilter,
blendMode = backgroundBlendMode,
style = backgroundStyle
)
val drawTextX =
if (barChartType == BarChartType.VERTICAL) centerPointOfBar else selectedXAxisWidth + highlightTextOffset.toPx()
val drawTextY =
if (barChartType == BarChartType.VERTICAL) selectedOffset.y - highlightTextOffset.toPx() else (y + background.height() / 2) - (highlightTextPaint.fontMetrics.descent)
drawText(
label,
drawTextX,
drawTextY,
highlightTextPaint
)
}
}, drawHighlightBar: DrawScope.(Float, Float, Float, Float, BarChartType) -> Unit = { x, y, width, height, barChartType ->
val rectWidth = if (barChartType == BarChartType.VERTICAL) width else height
val rectHeight = if (barChartType == BarChartType.VERTICAL) height else width
drawRoundRect(
color = highlightBarColor,
topLeft = Offset(x, y),
size = Size(rectWidth, rectHeight),
cornerRadius = CornerRadius(
highlightBarCornerRadius.toPx(),
highlightBarCornerRadius.toPx()
),
style = Stroke(width = highlightBarStrokeWidth.toPx())
)
}, groupBarPopUpLabel: (String, Float) -> String = { name, value ->
val xLabel = "Name : $name "
val yLabel = "Value : ${String.format("%.2f", value)}"
"$xLabel $yLabel"
}, drawGroupBarPopUp: DrawScope.(Offset, BarData, Float) -> Unit = { selectedOffset, identifiedPoint, centerPointOfBar ->
val highlightTextPaint = TextPaint().apply {
textSize = highlightTextSize.toPx()
color = highlightTextColor.toArgb()
textAlign = highlightLabelAlignment
typeface = highlightTextTypeface
}
val xLabel = "${identifiedPoint.point.x.toInt()}"
val label = groupBarPopUpLabel(xLabel, identifiedPoint.point.y)
drawContext.canvas.nativeCanvas.apply {
val background = getTextBackgroundRect(
centerPointOfBar,
selectedOffset.y,
label,
highlightTextPaint
)
drawRoundRect(
color = highlightTextBackgroundColor,
topLeft = Offset(
background.left.toFloat(),
background.top.toFloat() - highlightTextOffset.toPx()
),
size = Size(background.width().toFloat(), background.height().toFloat()),
alpha = highlightTextBackgroundAlpha,
cornerRadius = highlightPopUpCornerRadius,
colorFilter = backgroundColorFilter,
blendMode = backgroundBlendMode,
style = backgroundStyle
)
drawText(
label,
centerPointOfBar,
selectedOffset.y - highlightTextOffset.toPx(),
highlightTextPaint
)
}
}, barChartType: BarChartType = BarChartType.VERTICAL)
Parameters
highlight
: Padding between the highlighted bar and the text
highlight
: Text size of the highlighted bar text
highlight
: Text color of the highlighted bar text
highlight
: Background color of the highlight background
highlight
: Alpha for the highlighted text background
highlight
: Typeface of the highlighted bar text
highlight
: Corner radius of the highlighted bar
highlight
: Color of the highlighted bar
highlight
: Stroke width of the highlighted bar
highlight
: Corner radius of the highlighted background
background
: ColorFilter to apply to the color when drawn into the destination.
background
:Blending algorithm to be applied to the path when it is drawn.
background
: Whether or not the path is stroked or filled in.
is
: Boolean flag to enable disable highlight
pop
: The text that can be shown on the popup given 2 input params x and y values
draw
: Override this to change the default background implementation. You are provided with the selected offset, x, y values, center point of bar.
draw
: draw override this to change the default drawRoundRect implementation. You are provided with the actual point x, y, height, width.
group
: Popup label for selected bar in group bar chart.
draw
: draw override this to change the default popup implementation. You are provided with the actual point x, y, height, width.