## Documentation

Table of Contents
Class Inheritance Tree
Widget Screenshots
Package groups

## Index

Package: Gamma_Curve

- Goto spec source

# Description

    package Gtk.Gamma_Curve is

The Gtk_Gamma_Curve widget is a child of Gtk_Curve specifically for editing gamma curves, which are used in graphics applications such as the Gimp.

The Gamma_Curve widget shows a curve which the user can edit with the mouse just like a Gtk_Curve widget. On the right of the curve it also displays 5 buttons, 3 of which change between the 3 curve modes (spline, linear and free), and the other 2 set the curve to a particular gamma value, or reset it to a straight line.

Binding from C File version 2.8.17

<testgtk>create_gamma_curve.adb</testgtk>

### Screenshot

# Classes

### Gtk_Gamma_Curve_Record

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    type Gtk_Gamma_Curve_Record is new Gtk.Box.Gtk_Box_Record with private;

#### Ancestors:

Gtk.Box.Gtk_Box_Record
Gtk.Container.Gtk_Container_Record
Gtk.Widget.Gtk_Widget_Record
Glib.Object.GObject_Record

#### Primitive operations:

Get_Curve

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Get_Gamma

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Glib.Object.Deallocate

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(Inherited)
Glib.Object.Get_Type

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Glib.Object.Notify

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(Inherited)
Glib.Object.Ref

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Glib.Object.Ref_Sink

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Glib.Object.Unref

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Gtk.Box.Get_Child

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Gtk.Box.Get_Homogeneous

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Gtk.Box.Get_Orientation

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Gtk.Box.Get_Spacing

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Gtk.Box.Pack_End

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Gtk.Box.Pack_End_Defaults

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Gtk.Box.Pack_Start

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Gtk.Box.Pack_Start_Defaults

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Gtk.Box.Query_Child_Packing

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Gtk.Box.Reorder_Child

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Gtk.Box.Set_Child_Packing

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Gtk.Box.Set_Homogeneous

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Gtk.Box.Set_Orientation

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Gtk.Box.Set_Spacing

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Gtk.Container.Add

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Gtk.Container.Check_Resize

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Gtk.Container.Child_Get_Property

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Gtk.Container.Child_Set_Property

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Gtk.Container.Child_Type

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Gtk.Container.Forall

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Gtk.Container.Foreach

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Gtk.Container.Get_Border_Width

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Gtk.Container.Get_Children

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Gtk.Container.Get_Focus_Chain

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Gtk.Container.Get_Focus_Child

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Gtk.Container.Get_Focus_Hadjustment

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Gtk.Container.Get_Focus_Vadjustment

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Gtk.Container.Get_Resize_Mode

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Gtk.Container.Propagate_Expose

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Gtk.Container.Remove

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Gtk.Container.Resize_Children

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Gtk.Container.Set_Border_Width

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Gtk.Container.Set_Focus_Chain

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Gtk.Container.Set_Focus_Child

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Gtk.Container.Set_Focus_Hadjustment

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Gtk.Container.Set_Focus_Vadjustment

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Gtk.Container.Set_Reallocate_Redraws

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Gtk.Container.Set_Resize_Mode

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Gtk.Container.Unset_Focus_Chain

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Gtk.Widget.Activate

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Gtk.Widget.Add_Accelerator

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Gtk.Widget.Add_Events

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Gtk.Widget.Add_Mnemonic_Label

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Gtk.Widget.Can_Activate_Accel

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Gtk.Widget.Child_Notify

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Gtk.Widget.Class_Path

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Gtk.Widget.Class_Path_Reversed

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Gtk.Widget.Create_Pango_Context

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Gtk.Widget.Create_Pango_Layout

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Gtk.Widget.Destroy

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Gtk.Widget.Draw

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Gtk.Widget.Ensure_Style

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Gtk.Widget.Error_Bell

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Gtk.Widget.Flag_Is_Set

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Gtk.Widget.Flags

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Gtk.Widget.Freeze_Child_Notify

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Gtk.Widget.Get_Allocation_Height

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Gtk.Widget.Get_Allocation_Width

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Gtk.Widget.Get_Allocation_X

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Gtk.Widget.Get_Allocation_Y

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Gtk.Widget.Get_Ancestor

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Gtk.Widget.Get_Child_Requisition

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Gtk.Widget.Get_Child_Visible

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Gtk.Widget.Get_Colormap

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Gtk.Widget.Get_Composite_Name

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Gtk.Widget.Get_Direction

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Gtk.Widget.Get_Events

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Gtk.Widget.Get_Extension_Events

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Gtk.Widget.Get_Has_Tooltip

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Gtk.Widget.Get_Name

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Gtk.Widget.Get_No_Show_All

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Gtk.Widget.Get_Pango_Context

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Gtk.Widget.Get_Parent

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Gtk.Widget.Get_Parent_Window

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Gtk.Widget.Get_Pointer

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Gtk.Widget.Get_Root_Window

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Gtk.Widget.Get_Size_Request

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Gtk.Widget.Get_Snapshot

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Gtk.Widget.Get_State

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Gtk.Widget.Get_Style

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Gtk.Widget.Get_Tooltip_Markup

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Gtk.Widget.Get_Tooltip_Text

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Gtk.Widget.Get_Tooltip_Window

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Gtk.Widget.Get_Toplevel

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Gtk.Widget.Get_Visual

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Gtk.Widget.Get_Window

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Gtk.Widget.Grab_Default

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Gtk.Widget.Grab_Focus

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Gtk.Widget.Has_Screen

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Gtk.Widget.Hide

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Gtk.Widget.Hide_All

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Gtk.Widget.Input_Shape_Combine_Mask

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Gtk.Widget.Intersect

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Gtk.Widget.Is_Ancestor

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Gtk.Widget.Is_Composited

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Gtk.Widget.Is_Focus

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Gtk.Widget.Keynav_Failed

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Gtk.Widget.List_Mnemonic_Labels

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Gtk.Widget.Map

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Gtk.Widget.Mnemonic_Activate

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Gtk.Widget.Modify_Base

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Gtk.Widget.Modify_Bg

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Gtk.Widget.Modify_Cursor

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Gtk.Widget.Modify_Fg

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Gtk.Widget.Modify_Font

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Gtk.Widget.Modify_Text

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Gtk.Widget.Path

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Gtk.Widget.Path_Reversed

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(Inherited)
Gtk.Widget.Queue_Clear

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Gtk.Widget.Queue_Clear_Area

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Gtk.Widget.Queue_Draw

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Gtk.Widget.Queue_Draw_Area

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Gtk.Widget.Queue_Resize

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Gtk.Widget.Queue_Resize_No_Redraw

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Gtk.Widget.Realize

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Gtk.Widget.Region_Intersect

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Gtk.Widget.Remove_Accelerator

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Gtk.Widget.Remove_Mnemonic_Label

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Gtk.Widget.Render_Icon

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Gtk.Widget.Reparent

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Gtk.Widget.Reset_Rc_Styles

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Gtk.Widget.Reset_Shapes

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Gtk.Widget.Restore_Default_Style

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Gtk.Widget.Send_Expose

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Gtk.Widget.Set_Accel_Path

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Gtk.Widget.Set_App_Paintable

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Gtk.Widget.Set_Child_Visible

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Gtk.Widget.Set_Colormap

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Gtk.Widget.Set_Composite_Name

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Gtk.Widget.Set_Direction

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Gtk.Widget.Set_Double_Buffered

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Gtk.Widget.Set_Events

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Gtk.Widget.Set_Extension_Events

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Gtk.Widget.Set_Flags

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Gtk.Widget.Set_Has_Tooltip

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Gtk.Widget.Set_Name

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Gtk.Widget.Set_No_Show_All

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Gtk.Widget.Set_Parent

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Gtk.Widget.Set_Parent_Window

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Gtk.Widget.Set_Redraw_On_Allocate

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Gtk.Widget.Set_Scroll_Adjustments

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Gtk.Widget.Set_Sensitive

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Gtk.Widget.Set_Size_Request

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Gtk.Widget.Set_State

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Gtk.Widget.Set_Style

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Gtk.Widget.Set_Tooltip_Markup

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Gtk.Widget.Set_Tooltip_Text

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Gtk.Widget.Set_Tooltip_Window

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Gtk.Widget.Set_UPosition

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Gtk.Widget.Set_USize

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Gtk.Widget.Set_Window

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Gtk.Widget.Shape_Combine_Mask

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Gtk.Widget.Show

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Gtk.Widget.Show_All

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Gtk.Widget.Show_Now

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Gtk.Widget.Size_Allocate

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Gtk.Widget.Size_Request

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Gtk.Widget.Style_Get_Property

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Gtk.Widget.Thaw_Child_Notify

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Gtk.Widget.Trigger_Tooltip_Query

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Gtk.Widget.Unmap

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Gtk.Widget.Unrealize

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Gtk.Widget.Unset_Flags

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(Inherited)

# Types

### Gtk_Gamma_Curve

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    type Gtk_Gamma_Curve is access all Gtk_Gamma_Curve_Record'Class;

# Subprograms & Entries

### Gtk_New

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    procedure Gtk_New (Gamma_Curve: out Gtk_Gamma_Curve);

Create a new Gtk_Gamma_Curve.

### Initialize

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    procedure Initialize (Gamma_Curve: access Gtk_Gamma_Curve_Record'Class);

Internal initialization function. See the section "Creating your own widgets" in the documentation.

### Get_Type

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    function Get_Type return Gtk.Gtk_Type;

Return the internal value associated with a Gtk_Gamma_Curve.

### Get_Curve

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    function Get_Curve (Gamma_Curve: access Gtk_Gamma_Curve_Record) return Gtk.Curve.Gtk_Curve;

Return the Curve widget associated with a Gamma_Curve.

### Get_Gamma

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    function Get_Gamma (Gamma_Curve: access Gtk_Gamma_Curve_Record) return Gfloat;

Return the Gamma value associated with a Gamma_Curve.