gtk3-0.13.7: Binding to the Gtk+ graphical user interface library.

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Stabilityprovisional
Portabilityportable (depends on GHC)
Safe HaskellNone
LanguageHaskell98

Graphics.UI.Gtk.Misc.SizeGroup

Contents

Description

Grouping widgets so they request the same size

Synopsis

Detail

SizeGroup provides a mechanism for grouping a number of widgets together so they all request the same amount of space. This is typically useful when you want a column of widgets to have the same size, but you can't use a Table widget.

In detail, the size requested for each widget in a SizeGroup is the maximum of the sizes that would have been requested for each widget in the size group if they were not in the size group. The mode of the size group (see sizeGroupSetMode) determines whether this applies to the horizontal size, the vertical size, or both sizes.

Note that size groups only affect the amount of space requested, not the size that the widgets finally receive. If you want the widgets in a SizeGroup to actually be the same size, you need to pack them in such a way that they get the size they request and not more. For example, if you are packing your widgets into a table, you would not include the Fill flag.

Widgets can be part of multiple size groups; Gtk+ will compute the horizontal size of a widget from the horizontal requisition of all widgets that can be reached from the widget by a chain of size groups of type SizeGroupHorizontal or SizeGroupBoth, and the vertical size from the vertical requisition of all widgets that can be reached from the widget by a chain of size groups of type SizeGroupVertical or SizeGroupBoth.

Class Hierarchy

| GObject
| +----SizeGroup

Types

Constructors

sizeGroupNew Source

Arguments

:: SizeGroupMode

mode - the mode for the new size group.

-> IO SizeGroup 

Create a new SizeGroup.

Methods

sizeGroupSetMode Source

Arguments

:: SizeGroupClass self 
=> self 
-> SizeGroupMode

mode - the mode to set for the size group.

-> IO () 

Sets the SizeGroupMode of the size group. The mode of the size group determines whether the widgets in the size group should all have the same horizontal requisition SizeGroupHorizontal all have the same vertical requisition SizeGroupVertical, or should all have the same requisition in both directions SizeGroupBoth.

sizeGroupGetMode Source

Arguments

:: SizeGroupClass self 
=> self 
-> IO SizeGroupMode

returns the current mode of the size group.

Gets the current mode of the size group. See sizeGroupSetMode.

sizeGroupAddWidget Source

Arguments

:: (SizeGroupClass self, WidgetClass widget) 
=> self 
-> widget

widget - the Widget to add

-> IO () 

Adds a widget to a SizeGroup. In the future, the requisition of the widget will be determined as the maximum of its requisition and the requisition of the other widgets in the size group. Whether this applies horizontally, vertically, or in both directions depends on the mode of the size group. See sizeGroupSetMode.

sizeGroupRemoveWidget Source

Arguments

:: (SizeGroupClass self, WidgetClass widget) 
=> self 
-> widget

widget - the Widget to remove

-> IO () 

Removes a widget from a SizeGroup.

sizeGroupSetIgnoreHidden Source

Arguments

:: SizeGroupClass self 
=> self 
-> Bool

ignoreHidden - whether hidden widgets should be ignored when calculating the size

-> IO () 

Sets whether invisible widgets should be ignored when calculating the size.

  • Available since Gtk+ version 2.8

sizeGroupGetIgnoreHidden Source

Arguments

:: SizeGroupClass self 
=> self 
-> IO Bool

returns True if invisible widgets are ignored.

Returns if invisible widgets are ignored when calculating the size.

  • Available since Gtk+ version 2.8

Attributes

sizeGroupMode :: SizeGroupClass self => Attr self SizeGroupMode Source

The directions in which the size group affects the requested sizes of its component widgets.

Default value: SizeGroupHorizontal

sizeGroupIgnoreHidden :: SizeGroupClass self => Attr self Bool Source

If True, hidden widgets are ignored when determining the size of the group.

Default value: False