Graphics.UI.Gtk.Abstract.Scrollbar

gtk3-0.14.6: Binding to the Gtk+ 3 graphical user interface library

Maintainer | gtk2hs-users@lists.sourceforge.net
Stability | provisional
Portability | portable (depends on GHC)
Safe Haskell | None
Language | Haskell98

Graphics.UI.Gtk.Abstract.Scrollbar

Contents

- Detail
- Class Hierarchy
- Types

Description

Base class for `HScrollbar` and `VScrollbar`

Synopsis

- data Scrollbar
- class RangeClass o => ScrollbarClass o
- castToScrollbar :: GObjectClass obj => obj -> Scrollbar
- gTypeScrollbar :: GType
- toScrollbar :: ScrollbarClass o => o -> Scrollbar

# Detail

The `Scrollbar` widget is an abstract base class for `HScrollbar` and `VScrollbar`. It is not very useful in itself.

The position of the thumb in a scrollbar is controlled by the scroll adjustments. See `Adjustment` for the fields in an adjustment - for `Scrollbar`, the "value" field represents the position of the scrollbar, which must be between the "lower" field and "upper - page_size." The "page_size" field represents the size of the visible scrollable area. The "step_increment" and "page_increment" fields are used when the user asks to step down (using the small stepper arrows) or page down (using for example the PageDown key).

# Class Hierarchy

    |  GObject
    |   +----Object
    |         +----Widget
    |               +----Range
    |                     +----Scrollbar
    |                           +----HScrollbar
    |                           +----VScrollbar

# Types

data Scrollbar #

Instances

Eq Scrollbar # |
Methods (==) :: Scrollbar -> Scrollbar -> Bool # (/=) :: Scrollbar -> Scrollbar -> Bool #
Ord Scrollbar # |
Methods compare :: Scrollbar -> Scrollbar -> Ordering # (<) :: Scrollbar -> Scrollbar -> Bool # (<=) :: Scrollbar -> Scrollbar -> Bool # (>) :: Scrollbar -> Scrollbar -> Bool # (>=) :: Scrollbar -> Scrollbar -> Bool # max :: Scrollbar -> Scrollbar -> Scrollbar # min :: Scrollbar -> Scrollbar -> Scrollbar #
GObjectClass Scrollbar # |
Methods toGObject :: Scrollbar -> GObject # unsafeCastGObject :: GObject -> Scrollbar #
ScrollbarClass Scrollbar # |
RangeClass Scrollbar # |
WidgetClass Scrollbar # |

class RangeClass o => ScrollbarClass o #

Instances

ScrollbarClass VScrollbar # |
ScrollbarClass HScrollbar # |
ScrollbarClass Scrollbar # |

castToScrollbar :: GObjectClass obj => obj -> Scrollbar #

gTypeScrollbar :: GType #

toScrollbar :: ScrollbarClass o => o -> Scrollbar #