ColorPicker {shiny.fluent}

ColorPicker

Description

The color picker (ColorPicker) is used to browse through and select colors. By default, it lets people navigate through colors on a color spectrum; or specify a color in either Red-Green-Blue (RGB); or alpha color code; or Hexadecimal textboxes.

For more details and examples visit the official docs. The R package cannot handle each and every case, so for advanced use cases you need to work using the original docs to achieve the desired result.

Usage

ColorPicker(...)

ColorPicker.shinyInput(inputId, ..., value = defaultValue)

updateColorPicker.shinyInput(
  session = shiny::getDefaultReactiveDomain(),
  inputId,
  ...
)

Arguments

...

Props to pass to the component. The allowed props are listed below in the Details section.

inputId

ID of the component.

value

Starting value.

session

Object passed as the session argument to Shiny server.

Details

• alphaLabel string
  Label for the alpha textfield.

• alphaSliderHidden boolean
  Whether to hide the alpha (or transparency) slider and text field.

• alphaType 'alpha' | 'transparency' | 'none'
alpha (the default) means display a slider and text field for editing alpha values. transparency also displays a slider and text field but for editing transparency values. none hides these controls.

Alpha represents the opacity of the color, whereas transparency represents the transparentness of the color: i.e. a 30% transparent color has 70% opaqueness.

• blueLabel string
  Label for the blue text field.

• className string
  Additional CSS class(es) to apply to the ColorPicker.

• color IColor | string
  Object or CSS-compatible string to describe the color.

• componentRef ⁠IRefObject<IColorPicker>⁠
  Gets the component ref.

• greenLabel string
  Label for the green text field.

• hexLabel string
  Label for the hex text field.

• onChange ⁠(ev: React.SyntheticEvent<HTMLElement>, color: IColor) => void⁠
  Callback for when the user changes the color. (Not called when the color is changed via props.)

• redLabel string
  Label for the red text field.

• showPreview boolean
  Whether to show color preview box.

• strings IColorPickerStrings
  Labels for elements within the ColorPicker. Defaults are provided in English only.

• styles ⁠IStyleFunctionOrObject<IColorPickerStyleProps, IColorPickerStyles>⁠
  Call to provide customized styling that will layer on top of the variant rules.

• theme ITheme
  Theme (provided through customization).

• ariaDescription string
  Detailed description for how to use the color rectangle. Moving the thumb horizontally adjusts saturation and moving it vertically adjusts value (essentially, brightness).

• ariaLabel string
  Label of the ColorRectangle for the benefit of screen reader users.

• ariaValueFormat string
  Format string for the color rectangle's current value as read by screen readers. The string must include descriptions and two placeholders for the current values: {0} for saturation and {1} for value/brightness.

• className string
  Additional CSS class(es) to apply to the ColorRectangle.

• color IColor
  Current color of the rectangle.

• componentRef ⁠IRefObject<IColorRectangle>⁠
  Gets the component ref.

• minSize number
  Minimum width and height.

• onChange ⁠(ev: React.MouseEvent | React.KeyboardEvent, color: IColor) => void⁠
  Callback for when the color changes.

• styles ⁠IStyleFunctionOrObject<IColorRectangleStyleProps, IColorRectangleStyles>⁠
  Call to provide customized styling that will layer on top of the variant rules.

• theme ITheme
  Theme (provided through customization).

• ariaLabel string
  Label of the ColorSlider for the benefit of screen reader users.

• className string
  Additional CSS class(es) to apply to the ColorSlider.

• componentRef ⁠IRefObject<IColorSlider>⁠
  Gets the component ref.

• isAlpha boolean
  If true, the slider represents an alpha slider and will display a gray checkered pattern in the background. Otherwise, the slider represents a hue slider.

• maxValue number
  Maximum value of the slider.

• minValue number
  Minimum value of the slider.

• onChange ⁠(event: React.MouseEvent | React.KeyboardEvent, newValue?: number) => void⁠
  Callback issued when the value changes.

• overlayColor string
  Hex color to use when rendering an alpha or transparency slider's overlay, without the ⁠#⁠.

• overlayStyle React.CSSProperties
  Custom style for the overlay element.

• styles ⁠IStyleFunctionOrObject<IColorSliderStyleProps, IColorSliderStyles>⁠
  Call to provide customized styling that will layer on top of the variant rules.

• theme ITheme
  Theme (provided through customization).

• thumbColor string
  CSS-compatible string for the color of the thumb element.

• type 'hue' | 'alpha' | 'transparency'
  Type of slider to display.

• value number
  Current value of the slider.

Value

Object with shiny.tag class suitable for use in the UI of a Shiny app. The update functions return nothing (called for side effects).

Examples

library(shiny)
library(shiny.fluent)

ui <- function(id) {
  ns <- NS(id)
  div(
    ColorPicker.shinyInput(ns("color"), value = "#00FF01"),
    textOutput(ns("colorValue"))
  )
}

server <- function(id) {
  moduleServer(id, function(input, output, session) {
    output$colorValue <- renderText({
      sprintf("Value: %s", input$color)
    })
  })
}

if (interactive()) {
  shinyApp(ui("app"), function(input, output) server("app"))
}