Copyright	Will Thompson Iñaki García Etxebarria and Jonas Platte
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria
Safe Haskell	None
Language	Haskell2010

GI.Gtk.Objects.CustomLayout

Contents

Description

CustomLayout is a convenience type meant to be used as a transition mechanism between GtkWidgets implementing a layout policy, and LayoutManager classes.

A CustomLayout uses closures matching to the old Widget virtual functions for size negotiation, as a convenience API to ease the porting towards the corresponding LayoutManager virtual functions.

Synopsis

newtype CustomLayout = CustomLayout (ManagedPtr CustomLayout)
class (GObject o, IsDescendantOf CustomLayout o) => IsCustomLayout o
toCustomLayout :: (MonadIO m, IsCustomLayout o) => o -> m CustomLayout
customLayoutNew :: (HasCallStack, MonadIO m) => Maybe CustomRequestModeFunc -> CustomMeasureFunc -> CustomAllocateFunc -> m CustomLayout

Exported types

newtype CustomLayout Source #

Memory-managed wrapper type.

Constructors

CustomLayout (ManagedPtr CustomLayout)

Instances

Instances details

Eq CustomLayout Source #
Instance details Defined in GI.Gtk.Objects.CustomLayout Methods (==) :: CustomLayout -> CustomLayout -> Bool (/=) :: CustomLayout -> CustomLayout -> Bool
GObject CustomLayout Source #
Instance details Defined in GI.Gtk.Objects.CustomLayout
ManagedPtrNewtype CustomLayout Source #
Instance details Defined in GI.Gtk.Objects.CustomLayout Methods toManagedPtr :: CustomLayout -> ManagedPtr CustomLayout
TypedObject CustomLayout Source #
Instance details Defined in GI.Gtk.Objects.CustomLayout Methods glibType :: IO GType
IsGValue CustomLayout Source #	Convert `CustomLayout` to and from `GValue` with `toGValue` and `fromGValue`.
Instance details Defined in GI.Gtk.Objects.CustomLayout Methods toGValue :: CustomLayout -> IO GValue fromGValue :: GValue -> IO CustomLayout
HasParentTypes CustomLayout Source #
Instance details Defined in GI.Gtk.Objects.CustomLayout
type ParentTypes CustomLayout Source #
Instance details Defined in GI.Gtk.Objects.CustomLayout type ParentTypes CustomLayout = '[LayoutManager, Object]

class (GObject o, IsDescendantOf CustomLayout o) => IsCustomLayout o Source #

Type class for types which can be safely cast to CustomLayout, for instance with toCustomLayout.

Instances

Instances details

(GObject o, IsDescendantOf CustomLayout o) => IsCustomLayout o Source #
Instance details Defined in GI.Gtk.Objects.CustomLayout

toCustomLayout :: (MonadIO m, IsCustomLayout o) => o -> m CustomLayout Source #

Cast to CustomLayout, for types for which this is known to be safe. For general casts, use castTo.

Methods

Overloaded methods

new

customLayoutNew Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Maybe CustomRequestModeFunc	`requestMode`: a function to retrieve the `SizeRequestMode` of the widget using the layout; the default request mode is `SizeRequestModeConstantSize`
-> CustomMeasureFunc	`measure`: a function to measure the widget using the layout manager
-> CustomAllocateFunc	`allocate`: a function to allocate the children of the widget using the layout manager
-> m CustomLayout	Returns: the newly created `CustomLayout`

Creates a new legacy layout manager.

Legacy layout managers map to the old Widget size negotiation virtual functions, and are meant to be used during the transition from layout containers to layout manager delegates.