R: Create a colour input control (DEPRECATED)

colourInput {shinyjs} | R Documentation

## Create a colour input control (DEPRECATED)

### Description

Create an input control to select a colour.
As of August 2016, this function is being deprecated and has moved to the `colourpicker` package. Please use the `colourpicker` package in the future.

### Usage

    colourInput(inputId, label, value = "white", showColour = c("both", "text",
      "background"), palette = c("square", "limited"), allowedCols,
      allowTransparent = FALSE, transparentText, returnName = FALSE)

### Arguments

`inputId` | The `input` slot that will be used to access the value.
`label` | Display label for the control, or '`NULL` for no label.
`value` | Initial value (can be a colour name or HEX code)
`showColour` | Whether to show the chosen colour as text inside the input, as the background colour of the input, or both (default).
`palette` | The type of colour palette to allow the user to select colours from. `square` (default) shows a square colour palette that allows the user to choose any colour, while `limited` only gives the user a predefined list of colours to choose from.
`allowedCols` | A list of colours that the user can choose from. Only applicable when `palette == "limited"`. The `limited` palette uses a default list of 40 colours if `allowedCols` is not defined.
`allowTransparent` | If `TRUE`, then add a checkbox that allows the user to select the `transparent` colour.
`transparentText` | The text to show beside the transparency checkbox when `allowTransparent` is `TRUE`. The default value is "Transparent", but you can change it to "None" or any other string. This has no effect on the return value from the input; when the checkbox is checked, the input will always return the string "transparent".
`returnName` | If `TRUE`, then return the name of an R colour instead of a HEX value when possible.

### Details

A colour input allows users to select a colour by clicking on the desired colour, or by entering a valid HEX colour in the input box. The input can be initialized with either a colour name or a HEX value. The return value is a HEX value by default, but you can use the `returnName = TRUE` parameter to get an R colour name instead (only when an R colour exists for the selected colour).

Since most functions in R that accept colours can also accept the value "transparent", `colourInput` has an option to allow selecting the "transparent" colour. When the user checks the checkbox for this special colour, the returned value form the input is "transparent".

### Note

Unlike the rest of the `shinyjs` functions, this function does not require you to call `useShinyjs()` first.

See http://daattali.com/shiny/colourInput/ for a live demo.

### See Also

`updateColourInput` `colourPicker`

### Examples

    if (interactive()) {
      library(shiny)
      shinyApp(
        ui = fluidPage(
          strong("Selected colour:", textOutput("value", inline = TRUE)),
          colourInput("col", "Choose colour", "red"),
          h3("Update colour input"),
          textInput("text", "New colour: (colour name or HEX value)"),
          selectInput("showColour", "Show colour",
            c("both", "text", "background")),
          selectInput("palette", "Colour palette",
            c("square", "limited")),
          checkboxInput("allowTransparent", "Allow transparent", FALSE),
          checkboxInput("returnName", "Return R colour name", FALSE),
          actionButton("btn", "Update")
        ),
        server = function(input, output, session) {
          observeEvent(input$btn, {
            updateColourInput(session, "col",
              value = input$text, showColour = input$showColour,
              allowTransparent = input$allowTransparent,
              palette = input$palette,
              returnName = input$returnName)
          })
          output$value <- renderText(input$col)
        }
      )
    }

[Package shinyjs version 0.9 Index]