# hs.dialog.color

A panel that allows users to select a color.

# API Overview

Functions - API calls offered directly by the extension

alpha
callback
color
continuous
hide
mode
show
showsAlpha

# API Documentation

# Functions

# alpha


Signature	`hs.dialog.color.alpha([value]) -> number`
Type	Function
Description	Set or display the selected opacity.
Parameters	[value] - A opacity value as a number between 0 and 1, where 0 is 100% transparent/see-through.
Returns	The current alpha value as a number.
Notes	Example: `hs.dialog.color.alpha(0.5)`
Examples	None
Source	extensions/dialog/libdialog.m line 257

# callback


Signature	`hs.dialog.color.callback([callbackFn]) -> function or nil`
Type	Function
Description	Sets or removes the callback function for the color panel.
Parameters	a function, or `nil` to remove the current function, which will be invoked as a callback for messages generated by this color panel. The callback function should expect 2 arguments as follows: A table containing the color values from the color panel. A boolean which returns `true` if the color panel has been closed otherwise `false` indicating that the color panel is still open (i.e. it may change color again).
Returns	The last callbackFn or `nil` so you can save it and re-attach it if something needs to temporarily take the callbacks.
Notes	Example: `hs.dialog.color.callback(function(a,b) print("COLOR CALLBACK:\nSelected Color: " .. hs.inspect(a) .. "\nPanel Closed: " .. hs.inspect(b)) end)`
Examples	None
Source	extensions/dialog/libdialog.m line 79

# color


Signature	`hs.dialog.color.color([value]) -> table`
Type	Function
Description	Set or display the currently selected color in a color wheel.
Parameters	[value] - The color values in a table (as described in `hs.drawing.color`).
Returns	A table of the currently selected color in the form of `hs.drawing.color`.
Notes	Example: `hs.dialog.color.color(hs.drawing.color.blue)`
Examples	None
Source	extensions/dialog/libdialog.m line 164

# continuous


Signature	`hs.dialog.color.continuous([value]) -> boolean`
Type	Function
Description	Set or display whether or not the callback should be continuously updated when a user drags a color slider or control.
Parameters	[value] - `true` if you want to continuously trigger the callback, otherwise `false`.
Returns	`true` if continuous is enabled otherwise `false`
Notes	Example: `hs.dialog.color.continuous(true)`
Examples	None
Source	extensions/dialog/libdialog.m line 116

# hide


Signature	`hs.dialog.color.hide() -> none`
Type	Function
Description	Hides the Color Panel.
Parameters	None
Returns	None
Notes	Example: `hs.dialog.color.hide()`
Examples	None
Source	extensions/dialog/libdialog.m line 305

# mode


Signature	`hs.dialog.color.mode([value]) -> table`
Type	Function
Description	Set or display the currently selected color panel mode.
Parameters	[value] - The mode you wish to use as a string from the following options: "wheel" - Color Wheel "gray" - Gray Scale Slider "RGB" - RGB Sliders "CMYK" - CMYK Sliders "HSB" - HSB Sliders "list" - Color Palettes "custom" - Image Palettes "crayon" - Pencils ** "none"
Returns	The current mode as a string.
Notes	Example: `hs.dialog.color.mode("RGB")`
Examples	None
Source	extensions/dialog/libdialog.m line 189

# show


Signature	`hs.dialog.color.show() -> none`
Type	Function
Description	Shows the Color Panel.
Parameters	None
Returns	None
Notes	Example: `hs.dialog.color.show()`
Examples	None
Source	extensions/dialog/libdialog.m line 285

# showsAlpha


Signature	`hs.dialog.color.showsAlpha([value]) -> boolean`
Type	Function
Description	Set or display whether or not the color panel should display an opacity slider.
Parameters	[value] - `true` if you want to display an opacity slider, otherwise `false`.
Returns	`true` if the opacity slider is displayed otherwise `false`
Notes	Example: `hs.dialog.color.showsAlpha(true)`
Examples	None
Source	extensions/dialog/libdialog.m line 140