Graphics.UI.FLTK.Theme.Light.ColorChooser

Documentation

colorChooserNew :: (?assets :: Assets) => Rectangle -> Maybe Text -> Maybe Color -> IO (Ref ColorChooser)

flcColorChooser :: (?assets :: Assets) => Maybe Text -> Maybe Rectangle -> Maybe Color -> Maybe ColorChooserMode -> IO (Maybe Color)

Drawing routines

data ColorChooserComponentBounds

Bounds of the color chooser subcomponents

Constructors

ColorChooserComponentBounds

Fields

• colorChooserHueBoxBounds :: Rectangle

  The bounds of the hue box

• colorChooserSliderBounds :: Rectangle

  The bounds of the saturation slider

• colorChooserPreviewPaneBounds :: Rectangle

  The bounds of the byte/hex/decimal color readout and color swatch preview pane.

Instances

Show ColorChooserComponentBounds

Defined in Graphics.UI.FLTK.Theme.Light.ColorChooser

Methods

showsPrec :: Int -> ColorChooserComponentBounds -> ShowS

show :: ColorChooserComponentBounds -> String

showList :: [ColorChooserComponentBounds] -> ShowS

data ColorChooserComponentLayout

Layout of color chooser subcomponents

Constructors

ColorChooserComponentLayout

Fields

• paddingWidthPercentage :: Double

  Left/right padding

• paddingHeightPercentage :: Double

  Top/bottom padding

• betweenPaddingPercent :: Double

  % of color chooser width to set as padding between subcomponents

• hueBoxWidthPercentage :: Double

  % of color chooser width dedicated to the hue box

• sliderWidthPercentage :: Double

  % of color chooser width dedicated to the saturation slider

• hueBoxHandleRadius :: Double

  Radius of the indicator you drag around the hue box to change color

• previewPanePercentage :: Double

  % of color chooser width dedicated to the preview pane

Instances

Show ColorChooserComponentLayout

Defined in Graphics.UI.FLTK.Theme.Light.ColorChooser

Methods

showsPrec :: Int -> ColorChooserComponentLayout -> ShowS

show :: ColorChooserComponentLayout -> String

showList :: [ColorChooserComponentLayout] -> ShowS

data ColorChooserState

The state of color chooser, passed around as in IORef and updated in callbacks, etc.

Constructors

ColorChooserState

Fields

• colorChooserValue :: Between0And1
• colorChooserR :: Between0And1
• colorChooserG :: Between0And1
• colorChooserB :: Between0And1
• colorChooserHue :: Between0And6
• colorChooserSaturation :: Between0And1
• colorChooserHueImage :: Ref RGBImage
• colorChooserMode :: ColorChooserMode

Instances

Show ColorChooserState

Defined in Graphics.UI.FLTK.Theme.Light.ColorChooser

Methods

showsPrec :: Int -> ColorChooserState -> ShowS

show :: ColorChooserState -> String

showList :: [ColorChooserState] -> ShowS

colorDialCallback :: Ref FillDial -> Ref FillDial -> Ref FillDial -> Ref ColorChooser -> IO ()

React to changes the dials in the preview pane

drawCurrentColor :: Color -> Ref Box -> IO ()

drawHueBox :: Double -> Int -> IORef ColorChooserState -> Ref ColorChooser -> Ref Box -> IO ()

Draw the hue box subcomponent in the given Box, takes the Double indicator handle radius, the Int slider gauge height so it can align itself with it.

drawPreviewColor :: Ref ColorChooser -> Ref Box -> IO ()

drawSaturationSlider :: IORef ColorChooserState -> Ref Slider -> IO ()

Draw the saturation slider using the current color to fill in the background image

gaugeImageRectangle :: GaugeSliderSpec -> Rectangle -> Rectangle

Calculate the bounds of the saturation slider

generateImage :: Size -> IO (Ref RGBImage)

Generate the hue box image

generateVImage :: RGB -> Size -> IO (Ref SVGImage)

Generate the background of the saturation slider

handleHueBox :: Double -> Int -> Ref ColorChooser -> Ref Box -> Event -> IO (Either UnknownEvent ())

Handle all events inside the hue box given the Double indicator radius and the Int gauge height.

hueBoxBounds :: Rectangle -> Double -> Int -> Rectangle

Calculate the bounds of the hue box based on the overall Rectangle bounds, the Double radius of the indicator circle (half the indicator circle can be outside the box so the center is always within it), and the Int saturation slider height so the hue box can position itself accordingly.

makeColorChooserComponentBounds :: ColorChooserComponentLayout -> Rectangle -> Int -> ColorChooserComponentBounds

Calculate the overall bounds of all the subcomponents

makeColorChooserComponentLayout :: Size -> Width -> Int -> ColorChooserComponentLayout

The default layout of color chooser subcomponents

maxSliderWidth :: Width

Max width of the saturation slider if the color chooser is resized

modeMenuCallback :: IORef ColorChooserState -> Ref FillDial -> Ref FillDial -> Ref FillDial -> Ref ColorChooser -> Ref Choice -> IO ()

Update the dials if the preview mode is changed from RGB->Hex->HSV->Byte mode

setValuators :: Ref FillDial -> Ref FillDial -> Ref FillDial -> Ref ColorChooser -> IO ()

Set the dials according the selected color

sliderCallback :: IORef ColorChooserState -> Ref ColorChooser -> Ref Slider -> IO ()

React to changes in the saturation slider

updateHsv :: IORef ColorChooserState -> Ref Slider -> Ref Box -> Ref FillDial -> Ref FillDial -> Ref FillDial -> Ref Group -> Ref ColorChooser -> (Between0And6, Between0And1, Between0And1) -> IO Int

Update all the controls based on the dial selected HSV

updateRgb :: IORef ColorChooserState -> Ref Slider -> Ref Box -> Ref FillDial -> Ref FillDial -> Ref FillDial -> Ref Group -> Ref ColorChooser -> (Between0And1, Between0And1, Between0And1) -> IO Int

Update all the controls based on the dial selected RGB value