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-----------------------------------------------------------------------
-- GtkAda - Ada95 binding for Gtk+/Gnome --
-- --
-- Copyright (C) 1998-2000 E. Briot, J. Brobecker and A. Charlet --
-- Copyright (C) 2000-2006 AdaCore --
-- --
-- This library is free software; you can redistribute it and/or --
-- modify it under the terms of the GNU General Public --
-- License as published by the Free Software Foundation; either --
-- version 2 of the License, or (at your option) any later version. --
-- --
-- This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public --
-- License along with this library; if not, write to the --
-- Free Software Foundation, Inc., 59 Temple Place - Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- --
-----------------------------------------------------------------------
-- <description>
-- This widget provides a low level graphical representation of a range of
-- values. It is used by other widgets such as Gtk_Scale and Gtk_Scrollbar.
-- </description>
-- <c_version>2.8.17</c_version>
-- <testgtk>create_range.adb</testgtk>
-- <screenshot>gtk-range</screenshot>
with Glib.Properties;
with Gtk.Adjustment;
with Gtk.Enums; use Gtk.Enums;
with Gtk.Widget;
package Gtk.GRange is
type Gtk_Range_Record is new Gtk.Widget.Gtk_Widget_Record with private;
type Gtk_Range is access all Gtk_Range_Record'Class;
subtype Gtk_GRange is Gtk_Range;
function Get_Type return Gtk.Gtk_Type;
-- Return the internal value associated with a Gtk_Range.
procedure Set_Update_Policy
(The_Range : access Gtk_Range_Record;
Policy : Gtk_Update_Type);
-- Set the update policy for the range.
-- Update_Continuous means that anytime the range slider is moved, the
-- range value will change and the value_changed signal will be emitted.
-- Update_Delayed means that the value will be updated after a brief
-- timeout where no slider motion occurs, so updates are spaced by a short
-- time rather than continuous.
-- Update_Discontinuous means that the value will only be updated when the
-- user releases the button and ends the slider drag operation.
function Get_Update_Policy
(The_Range : access Gtk_Range_Record) return Gtk_Update_Type;
-- Return the current update policy.
procedure Set_Adjustment
(The_Range : access Gtk_Range_Record;
Adjustment : Gtk.Adjustment.Gtk_Adjustment);
-- Set the adjustment to be used as the "model" object for this range
-- widget. The adjustment indicates the current range value, the
-- minimum and maximum range values, the step/page increments used
-- for keybindings and scrolling, and the page size. The page size
-- is normally 0 for Gtk_Scale and nonzero for Gtk_Scrollbar, and
-- indicates the size of the visible area of the widget being scrolled.
-- The page size affects the size of the scrollbar slider.
function Get_Adjustment
(The_Range : access Gtk_Range_Record)
return Gtk.Adjustment.Gtk_Adjustment;
-- Return the adjustment associated with the range widget.
procedure Set_Inverted
(The_Range : access Gtk_Range_Record;
Setting : Boolean := True);
-- Ranges normally move from lower to higher values as the slider moves
-- from top to bottom or left to right. Inverted ranges have higher values
-- at the top or on the right rather than on the bottom or left.
function Get_Inverted (The_Range : access Gtk_Range_Record) return Boolean;
-- Return whether the range is inverted.
procedure Set_Increments
(The_Range : access Gtk_Range_Record;
Step : Gdouble;
Page : Gdouble);
-- Set the Step and the Page size for the range. The Step size is used when
-- the user clicks on the Gtk_Scrollbar arrows or moves the Gtk_Scale via
-- the arrow keys. The Page size is used when moving by pages via the
-- Page-Up and Page-Down keys for instance.
procedure Set_Range
(The_Range : access Gtk_Range_Record;
Min : Gdouble;
Max : Gdouble);
-- Set the allowable values in the Gtk_Range, and clamps the range value to
-- the between Min and Max.
procedure Set_Value
(The_Range : access Gtk_Range_Record;
Value : Gdouble);
-- Set the current value of the given Range. If the value is outside the
-- minimum or the maximum value range, it will be clamped to fit inside
-- the range.
-- Cause the "value_changed" signal to be emitted if the value is
-- different.
function Get_Value (The_Range : access Gtk_Range_Record) return Gdouble;
-- Return the current value of the range.
----------------
-- Properties --
----------------
-- The following properties are defined for this widget. See
-- Glib.Properties for more information on properties.
-- <properties>
-- Name: Update_Policy_Property
-- Type: Gtk_Update_Type
-- Flags: read-write
-- Descr: How the range should be updated on the screen
-- See also: Set_Update_Policy
--
-- Name: Adjustment_Property
-- Type: Object
-- Descr: The GtkAdjustment that contains the current value of this range
-- object
--
-- Name: Inverted_Property
-- Type: Boolean
-- Descr: Invert direction slider moves to increase range value
-- </properties>
Update_Policy_Property : constant Gtk.Enums.Property_Gtk_Update_Type;
Adjustment_Property : constant Glib.Properties.Property_Object;
Inverted_Property : constant Glib.Properties.Property_Boolean;
----------------------
-- Style Properties --
----------------------
-- The following properties can be changed through the gtk theme and
-- configuration files, and retrieved through Gtk.Widget.Style_Get_Property
-- <style_properties>
-- Name: Arrow_Displacement_X_Property
-- Type: Int
-- Descr: How far in the x direction to move the arrow when the button is
-- depressed
--
-- Name: Arrow_Displacement_Y_Property
-- Type: Int
-- Descr: How far in the y direction to move the arrow when the button is
-- depressed
--
-- Name: Slider_Width_Property
-- Type: Int
-- Descr: Width of scrollbar or scale thumb
--
-- Name: Stepper_Size_Property
-- Type: Int
-- Descr: Length of step buttons at ends
--
-- Name: Stepper_Spacing_Property
-- Type: Int
-- Descr: Spacing between step buttons and thumb
--
-- Name: Trough_Border_Property
-- Type: Int
-- Descr: Spacing between thumb/steppers and outer trough bevel
-- </style_properties>
Arrow_Displacement_X_Property : constant Glib.Properties.Property_Int;
Arrow_Displacement_Y_Property : constant Glib.Properties.Property_Int;
Slider_Width_Property : constant Glib.Properties.Property_Int;
Stepper_Size_Property : constant Glib.Properties.Property_Int;
Stepper_Spacing_Property : constant Glib.Properties.Property_Int;
Trough_Border_Property : constant Glib.Properties.Property_Int;
------------
-- Signal --
------------
-- <signals>
-- The following new signals are defined for this widget:
--
-- - "value_changed"
-- procedure Handler (R : access Gtk_Range_Record'Class);
-- Emitted when the current value of the range has changed
--
-- - "adjust_bounds"
-- procedure Handler
-- (R : access Gtk_Range_Record'Class;
-- Value : Gdouble);
--
-- - "change_value"
-- function Handler
-- (R : access Gtk_Range_Record'Class;
-- Typ : Gtk_Scroll_Type;
-- Value : Gdouble) return Gboolean;
-- Emitted when a scroll action is performed on the range. The type of
-- event that occurred and the new value are returned. The application
-- should return True if it has handled the event itself.
--
-- - "move_slider"
-- procedure Handler (R : access Gtk_Range_Record'Class);
-- Emitted when the slider has changed
--
-- </signals>
Signal_Adjust_Bounds : constant String := "adjust_bounds";
Signal_Change_Value : constant String := "change_value";
Signal_Move_Slider : constant String := "move_slider";
Signal_Value_Changed : constant String := "value_changed";
private
type Gtk_Range_Record is new Gtk.Widget.Gtk_Widget_Record with null record;
Update_Policy_Property : constant Gtk.Enums.Property_Gtk_Update_Type :=
Gtk.Enums.Build ("update_policy");
Adjustment_Property : constant Glib.Properties.Property_Object :=
Glib.Properties.Build ("adjustment");
Inverted_Property : constant Glib.Properties.Property_Boolean :=
Glib.Properties.Build ("inverted");
Arrow_Displacement_X_Property : constant Glib.Properties.Property_Int :=
Glib.Properties.Build ("arrow-displacement-x");
Arrow_Displacement_Y_Property : constant Glib.Properties.Property_Int :=
Glib.Properties.Build ("arrow-displacement-y");
Slider_Width_Property : constant Glib.Properties.Property_Int :=
Glib.Properties.Build ("slider-width");
Stepper_Size_Property : constant Glib.Properties.Property_Int :=
Glib.Properties.Build ("stepper-size");
Stepper_Spacing_Property : constant Glib.Properties.Property_Int :=
Glib.Properties.Build ("stepper-spacing");
Trough_Border_Property : constant Glib.Properties.Property_Int :=
Glib.Properties.Build ("trough-border");
pragma Import (C, Get_Type, "gtk_range_get_type");
end Gtk.GRange;
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