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

Graphics.UI.Gtk.Layout.Fixed

Contents

Detail
Class Hierarchy
Types
Constructors
Methods
Child Attributes

Description

A container which allows you to position widgets at fixed coordinates

Synopsis

Detail

The Fixed widget is a container which can place child widgets at fixed positions and with fixed sizes, given in pixels. Fixed performs no automatic layout management.

For most applications, you should not use this container! It keeps you from having to learn about the other Gtk+ containers, but it results in broken applications. With Fixed, the following things will result in truncated text, overlapping widgets, and other display bugs:

Themes, which may change widget sizes.
Fonts other than the one you used to write the app will of course change the size of widgets containing text; keep in mind that users may use a larger font because of difficulty reading the default, or they may be using Windows or the framebuffer port of Gtk+, where different fonts are available.
Translation of text into other languages changes its size. Also, display of non-English text will use a different font in many cases.

In addition, the fixed widget can't properly be mirrored in right-to-left languages such as Hebrew and Arabic. i.e. normally Gtk+ will flip the interface to put labels to the right of the thing they label, but it can't do that with Fixed. So your application will not be usable in right-to-left languages.

Finally, fixed positioning makes it kind of annoying to add/remove GUI elements, since you have to reposition all the other elements. This is a long-term maintenance problem for your application.

If you know none of these things are an issue for your application, and prefer the simplicity of Fixed, by all means use the widget. But you should be aware of the tradeoffs.

Class Hierarchy

| GObject
| +----Object
| +----Widget
| +----Container
| +----Fixed

Types

data Fixed Source #

Instances

Eq Fixed Source #
Methods (==) :: Fixed -> Fixed -> Bool # (/=) :: Fixed -> Fixed -> Bool #
Ord Fixed Source #
Methods compare :: Fixed -> Fixed -> Ordering # (<) :: Fixed -> Fixed -> Bool # (<=) :: Fixed -> Fixed -> Bool # (>) :: Fixed -> Fixed -> Bool # (>=) :: Fixed -> Fixed -> Bool # max :: Fixed -> Fixed -> Fixed # min :: Fixed -> Fixed -> Fixed #
GObjectClass Fixed Source #
Methods toGObject :: Fixed -> GObject # unsafeCastGObject :: GObject -> Fixed #
FixedClass Fixed Source #

ContainerClass Fixed Source #

WidgetClass Fixed Source #

class ContainerClass o => FixedClass o Source #

Instances

FixedClass Fixed Source #

castToFixed :: GObjectClass obj => obj -> Fixed Source #

gTypeFixed :: GType Source #

toFixed :: FixedClass o => o -> Fixed Source #

Constructors

fixedNew :: IO Fixed Source #

Creates a new Fixed.

Methods

fixedPut Source #

Arguments

:: (FixedClass self, WidgetClass widget)
=> self
-> widget	`widget` - the widget to add.
-> (Int, Int)	`(x,y)` - the horizontal and vertical position to place the widget at.
-> IO ()

Adds a widget to a Fixed container at the given position.

fixedMove Source #

Arguments

:: (FixedClass self, WidgetClass widget)
=> self
-> widget	`widget` - the child widget.
-> (Int, Int)	`(x,y)` - the horizontal and vertical position to move the widget to.
-> IO ()

Moves a child of a Fixed container to the given position.

Child Attributes

fixedChildX :: (FixedClass self, WidgetClass child) => child -> Attr self Int Source #

X position of child widget.

Default value: 0

fixedChildY :: (FixedClass self, WidgetClass child) => child -> Attr self Int Source #

Y position of child widget.

Default value: 0