GI.Gtk.Interfaces.ColorChooser

ColorChooser is an interface that is implemented by widgets for choosing colors. Depending on the situation, colors may be allowed to have alpha (translucency).

In GTK+, the main widgets that implement this interface are ColorChooserWidget, ColorChooserDialog and ColorButton.

Exported types

newtype ColorChooser

Constructors

ColorChooser (ManagedPtr ColorChooser)

Instances

GObject ColorChooser

Methods

gobjectType :: ColorChooser -> IO GType

IsObject ColorChooser

IsColorChooser ColorChooser

noColorChooser :: Maybe ColorChooser

class GObject o => IsColorChooser o

Instances

(GObject a, UnknownAncestorError Constraint ColorChooser a) => IsColorChooser a

IsColorChooser ColorChooser

IsColorChooser ColorChooserDialog

IsColorChooser ColorChooserWidget

IsColorChooser ColorButton

toColorChooser :: (MonadIO m, IsColorChooser o) => o -> m ColorChooser

Methods

addPalette

colorChooserAddPalette

Arguments

:: (HasCallStack, MonadIO m, IsColorChooser a)

=> a

chooser: a ColorChooser

-> Orientation

orientation: OrientationHorizontal if the palette should be displayed in rows, OrientationVertical for columns

-> Int32

colorsPerLine: the number of colors to show in each row/column

-> Maybe [RGBA]

colors: the colors of the palette, or Nothing

-> m ()

Adds a palette to the color chooser. If orientation is horizontal, the colors are grouped in rows, with colorsPerLine colors in each row. If horizontal is False, the colors are grouped in columns instead.

The default color palette of ColorChooserWidget has 27 colors, organized in columns of 3 colors. The default gray palette has 9 grays in a single row.

The layout of the color chooser widget works best when the palettes have 9-10 columns.

Calling this function for the first time has the side effect of removing the default color and gray palettes from the color chooser.

If colors is Nothing, removes all previously added palettes.

Since: 3.4

getRgba

colorChooserGetRgba

Arguments

:: (HasCallStack, MonadIO m, IsColorChooser a)

=> a

chooser: a ColorChooser

-> m RGBA

Gets the currently-selected color.

Since: 3.4

getUseAlpha

colorChooserGetUseAlpha

Arguments

:: (HasCallStack, MonadIO m, IsColorChooser a)

=> a

chooser: a ColorChooser

-> m Bool

Returns: True if the color chooser uses the alpha channel, False if not

Returns whether the color chooser shows the alpha channel.

Since: 3.4

setRgba

colorChooserSetRgba

Arguments

:: (HasCallStack, MonadIO m, IsColorChooser a)

=> a

chooser: a ColorChooser

-> RGBA

color: the new color

-> m ()

Sets the color.

Since: 3.4

setUseAlpha

colorChooserSetUseAlpha

Arguments

:: (HasCallStack, MonadIO m, IsColorChooser a)

=> a

chooser: a ColorChooser

-> Bool

useAlpha: True if color chooser should use alpha channel, False if not

-> m ()

Sets whether or not the color chooser should use the alpha channel.

Since: 3.4

Properties

rgba

constructColorChooserRgba :: IsColorChooser o => RGBA -> IO (GValueConstruct o)

getColorChooserRgba :: (MonadIO m, IsColorChooser o) => o -> m (Maybe RGBA)

setColorChooserRgba :: (MonadIO m, IsColorChooser o) => o -> RGBA -> m ()

useAlpha

constructColorChooserUseAlpha :: IsColorChooser o => Bool -> IO (GValueConstruct o)

getColorChooserUseAlpha :: (MonadIO m, IsColorChooser o) => o -> m Bool

setColorChooserUseAlpha :: (MonadIO m, IsColorChooser o) => o -> Bool -> m ()

Signals

colorActivated

type C_ColorChooserColorActivatedCallback = Ptr () -> Ptr RGBA -> Ptr () -> IO ()

type ColorChooserColorActivatedCallback = RGBA -> IO ()

afterColorChooserColorActivated :: (IsColorChooser a, MonadIO m) => a -> ColorChooserColorActivatedCallback -> m SignalHandlerId

genClosure_ColorChooserColorActivated :: ColorChooserColorActivatedCallback -> IO Closure

mk_ColorChooserColorActivatedCallback :: C_ColorChooserColorActivatedCallback -> IO (FunPtr C_ColorChooserColorActivatedCallback)

noColorChooserColorActivatedCallback :: Maybe ColorChooserColorActivatedCallback

onColorChooserColorActivated :: (IsColorChooser a, MonadIO m) => a -> ColorChooserColorActivatedCallback -> m SignalHandlerId

wrap_ColorChooserColorActivatedCallback :: ColorChooserColorActivatedCallback -> Ptr () -> Ptr RGBA -> Ptr () -> IO ()