gtk-0.12.4: Binding to the Gtk+ graphical user interface library.

Portability | portable (depends on GHC)
Stability | provisional
Maintainer | gtk2hs-users@lists.sourceforge.net
Safe Haskell | None

Graphics.UI.Gtk.Buttons.ScaleButton

Contents

- Detail
- Class Hierarchy
- Types
- Constructors
- Methods
- Attributes
- Signals

Description

A button which pops up a scale

- Module available since Gtk+ version 2.12

Synopsis

- data ScaleButton
- class ButtonClass o => ScaleButtonClass o
- castToScaleButton :: GObjectClass obj => obj -> ScaleButton
- toScaleButton :: ScaleButtonClass o => o -> ScaleButton
- scaleButtonNew :: IconSize -> Double -> Double -> Double -> [String] -> IO ScaleButton
- scaleButtonSetIcons :: ScaleButtonClass self => self -> [String] -> IO ()
- scaleButtonGetPopup :: ScaleButtonClass self => self -> IO Widget
- scaleButtonGetPlusButton :: ScaleButtonClass self => self -> IO Widget
- scaleButtonGetMinusButton :: ScaleButtonClass self => self -> IO Widget
- scaleButtonValue :: ScaleButtonClass self => Attr self Double
- scaleButtonSize :: ScaleButtonClass self => Attr self IconSize
- scaleButtonAdjustment :: ScaleButtonClass self => Attr self Adjustment
- scaleButtonIcons :: ScaleButtonClass self => ReadWriteAttr self [String] (Maybe [String])
- scaleButtonPopdown :: ScaleButtonClass self => Signal self (IO ())
- scaleButtonPopup :: ScaleButtonClass self => Signal self (IO ())
- scaleButtonValueChanged :: ScaleButtonClass self => Signal self (Double -> IO ())

# Detail

`ScaleButton` provides a button which pops up a scale widget. This kind of widget is commonly used for volume controls in multimedia applications, and Gtk+ provides a `VolumeButton` subclass that is tailored for this use case.

# Class Hierarchy

     | GObject
     | +----Object
     | +----Widget
     | +----Container
     | +----Bin
     | +----Button
     | +----ScaleButton
     | +----VolumeButton

# Types

data ScaleButton

Instances

Eq ScaleButton |
Ord ScaleButton |
GObjectClass ScaleButton |
ScaleButtonClass ScaleButton |
ButtonClass ScaleButton |
BinClass ScaleButton |
ContainerClass ScaleButton |
WidgetClass ScaleButton |
ObjectClass ScaleButton |

class ButtonClass o => ScaleButtonClass o

Instances

ScaleButtonClass VolumeButton |
ScaleButtonClass ScaleButton |

castToScaleButton :: GObjectClass obj => obj -> ScaleButton

toScaleButton :: ScaleButtonClass o => o -> ScaleButton

# Constructors

scaleButtonNew

Arguments

:: IconSize | `size` - a stock icon size
-> Double | `min` - the minimum value of the scale (usually 0)
-> Double | `max` - the maximum value of the scale (usually 100)
-> Double | `step` - the stepping of value when a scroll-wheel event, or up/down arrow event occurs (usually 2)
-> [String] |
    icons
-> IO ScaleButton |

Creates a `ScaleButton`, with a range between `min` and `max`, with a stepping of `step`.

# Methods

scaleButtonSetIcons

Arguments

:: ScaleButtonClass self |
=> self |
-> [String] |
    icons
-> IO () |

Sets the icons to be used by the scale button. For details, see the icons property.

scaleButtonGetPopup

Arguments

:: ScaleButtonClass self |
=> self |
-> IO Widget | returns the popup of the `ScaleButton`

Retrieves the popup of the `ScaleButton`.

- Available since Gtk+ version 2.14

scaleButtonGetPlusButton

Arguments

:: ScaleButtonClass self |
=> self |
-> IO Widget | returns the plus button of the `ScaleButton`.

Retrieves the plus button of the `ScaleButton`.

- Available since Gtk+ version 2.14

scaleButtonGetMinusButton

Arguments

:: ScaleButtonClass self |
=> self |
-> IO Widget | returns the minus button of the `ScaleButton`.

Retrieves the minus button of the `ScaleButton`.

- Available since Gtk+ version 2.14

# Attributes

scaleButtonValue :: ScaleButtonClass self => Attr self Double

The value of the scale.

Default value: 0

scaleButtonSize :: ScaleButtonClass self => Attr self IconSize

The icon size.

Default value: ''IconSizeSmallToolbar''

scaleButtonAdjustment :: ScaleButtonClass self => Attr self Adjustment

The `Adjustment` that contains the current value of this scale button object.

scaleButtonIcons :: ScaleButtonClass self => ReadWriteAttr self [String] (Maybe [String])

The names of the icons to be used by the scale button. The first item in the array will be used in the button when the current value is the lowest value, the second item for the highest value. All the subsequent icons will be used for all the other values, spread evenly over the range of values.

If there's only one icon name in the icons array, it will be used for all the values. If only two icon names are in the icons array, the first one will be used for the bottom 50% of the scale, and the second one for the top 50%.

It is recommended to use at least 3 icons so that the `ScaleButton` reflects the current value of the scale better for the users.

Since 2.12

# Signals

scaleButtonPopdown :: ScaleButtonClass self => Signal self (IO ())

The `popdown` signal is a keybinding signal which gets emitted to popdown the scale widget.

The default binding for this signal is Escape.

scaleButtonPopup :: ScaleButtonClass self => Signal self (IO ())

The `popup` signal is a keybinding signal which gets emitted to popup the scale widget.

The default bindings for this signal are Space, Enter and Return.

scaleButtonValueChanged :: ScaleButtonClass self => Signal self (Double -> IO ())

The `scaleButtonValueChanged` signal is emitted when the value field has changed.