File: gtk-button.ads

-----------------------------------------------------------------------

--               GtkAda - Ada95 binding for Gtk+/Gnome               --

--                                                                   --

--   Copyright (C) 1998-2000 E. Briot, J. Brobecker and A. Charlet   --

--                Copyright (C) 2000-2009, 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 package implements a general button widget. This button can

--  be clicked on by the user to start any action.

--  This button does not have multiple states, it can just be temporarily

--  pressed while the mouse is on it, but does not keep its pressed state.

```
-- 
```

--  The gtk+ sources provide the following drawing that explains the role of

--  the various spacings that can be set for a button:

```
--  </description> 
```
```
-- 
```
```
--  <example> 
```

--  +------------------------------------------------+

--  |                   BORDER                       |

--  |  +------------------------------------------+  |

--  |  |\\\\\\\\\\\\\\\\DEFAULT\\\\\\\\\\\\\\\\\  |  |

--  |  |\\+------------------------------------+  |  |

--  |  |\\| |           SPACING       3      | |  |  |

--  |  |\\| +--------------------------------+ |  |  |

--  |  |\\| |########## FOCUS ###############| |  |  |

--  |  |\\| |#+----------------------------+#| |  |  |

--  |  |\\| |#|         RELIEF            \|#| |  |  |

--  |  |\\| |#|  +-----------------------+\|#| |  |  |

--  |  |\\|1|#|  +     THE TEXT          +\|#|2|  |  |

--  |  |\\| |#|  +-----------------------+\|#| |  |  |

--  |  |\\| |#| \\\\\ ythickness \\\\\\\\\\|#| |  |  |

--  |  |\\| |#+----------------------------+#| |  |  |

--  |  |\\| |########### 1 ##################| |  |  |

--  |  |\\| +--------------------------------+ |  |  |

--  |  |\\| |        default spacing   4     | |  |  |

--  |  |\\+------------------------------------+  |  |

--  |  |\            ythickness                   |  |

--  |  +------------------------------------------+  |

--  |                border_width                    |

--  +------------------------------------------------+

```
--  </example> 
```
```
--  <c_version>2.14</c_version> 
```

--  <screenshot>gtk-button</screenshot>

```
--  <group>Buttons and Toggles</group> 
```

--  <testgtk>create_buttons.adb</testgtk>

```
 
```

with Glib.PropertiesTo API doc
To spec
To body;

```
with Gtk.BinTo API doc
To spec
To body; 
```

with Gtk.EnumsTo API doc
To spec
To body;

with Gtk.WidgetTo API doc
To spec
To body;

```
 
```

package Gtk.ButtonTo API doc
To spec
To body is

```
 
```

   type Gtk_Button_RecordTo API doc
To body is new Bin.Gtk_Bin_RecordTo API doc
To spec
To body with private;

   type Gtk_Button is access all Gtk_Button_RecordTo API doc
To spec
To body'Class;

```
 
```

   procedure Gtk_NewTo API doc
To body (Button : out Gtk_ButtonTo API doc
To spec; Label : UTF8_StringTo API doc
To spec := "");

```
   --  Create a new button. 
```

   --  if Label is not the empty string, then the text appears in the

   --  button (and the child of the button is a Gtk_Label). On the other

   --  hand, if Label is the empty string, then no child is created for

   --  the button and it is your responsibility to add one. This is the

   --  recommended way to put a pixmap inside the button.

```
 
```

   procedure Gtk_New_From_StockTo API doc
To body

     (Button : out Gtk_ButtonTo API doc
To spec; Stock_Id : String);

   --  Create a new button containing the image and text from a stock item.

   --  Some stock ids have predefined contants like Gtk.Stock.Stock_OK or

   --  Gtk.Stock.Stock_Apply. See Gtk.Stock for a complete list of predefined

```
   --  stock items. 
```

   --  Stock_Id: the name of the stock item.

```
 
```

   procedure Gtk_New_With_MnemonicTo API doc
To body

     (Button : out Gtk_ButtonTo API doc
To spec; Label : UTF8_StringTo API doc
To spec);

   --  Create a new button containing a label.

   --  Label: The text of the button, with an underscore in front of the

```
   --         mnemonic character 
```

   --  If characters in Label are preceded by an underscore, they are

   --  underlined indicating that they represent a keyboard accelerator called

   --  a mnemonic. Pressing Alt and that key activates the button.

```
 
```

   procedure InitializeTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body'Class;

      Label  : UTF8_StringTo API doc
To spec);

   --  Internal initialization function.

   --  See the section "Creating your own widgets" in the documentation.

```
 
```

   procedure Initialize_From_StockTo API doc
To body

     (Button   : access Gtk_Button_RecordTo API doc
To spec
To body'Class;

```
      Stock_Id : String); 
```

   --  Internal initialization function.

```
 
```

   procedure Initialize_With_MnemonicTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body'Class;

      Label  : UTF8_StringTo API doc
To spec);

   --  Internal initialization function.

```
 
```

   function Get_TypeTo API doc
To body return Gtk.Gtk_TypeTo API doc
To spec;

   --  Return the internal value associated with a Gtk_Button.

```
 
```

   procedure Set_ReliefTo API doc
To body

     (Button    : access Gtk_Button_RecordTo API doc
To spec
To body;

      New_StyleTo API doc
To body : Gtk.Enums.Gtk_Relief_StyleTo API doc
To spec);

   function Get_ReliefTo API doc
To body

     (Button    : access Gtk_Button_RecordTo API doc
To spec
To body) return Gtk.Enums.Gtk_Relief_StyleTo API doc
To spec;

   --  Modify the relief style for the button.

   --  This modifies only its visual aspect, not its behavior.

```
 
```

   procedure Set_LabelTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body;

      Label  : UTF8_StringTo API doc
To spec);

```
   function Get_LabelTo API doc
To body 
```

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body) return UTF8_StringTo API doc
To spec;

   --  Set or gets the label of the button.

   --  This text is also used to select an icon if Set_Use_Stock was called

```
   --  with a parameter set to True. 
```
```
 
```

   procedure Set_Use_UnderlineTo API doc
To body

     (Button        : access Gtk_Button_RecordTo API doc
To spec
To body;

```
      Use_Underline : Boolean); 
```

   function Get_Use_UnderlineTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body) return Boolean;

   --  Sets whether an underscore used in the button's label designates an

```
   --  accelerator. 
```

   --  If True, then if the user presses alt and the character following the

   --  underscore, then the button will act as if it had been pressed.

```
 
```

   procedure Set_Use_StockTo API doc
To body

     (Button    : access Gtk_Button_RecordTo API doc
To spec
To body;

```
      Use_Stock : Boolean); 
```

   function Get_Use_StockTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body) return Boolean;

   --  Sets or Gets whether a stock item is used by the button.

```
 
```

   procedure Set_AlignmentTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body;

      Xalign : GfloatTo API doc
To spec := 0.5;

      Yalign : GfloatTo API doc
To spec := 0.5);

   procedure Get_AlignmentTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body;

      Xalign : out GfloatTo API doc
To spec;

      Yalign : out GfloatTo API doc
To spec);

   --  Specify the alignment of the label inside the button.

   --  Passing (0.0, 0.0) indicates the label should be at the top-left corner

   --  of the button. (0.5, 0.5) indicates that the label should be centered.

   --  This property has no effect unless the button's child is a child of

```
   --  Gtk_Alignment or Gtk_Misc 
```
```
 
```

   procedure Set_Focus_On_ClickTo API doc
To body

     (Button         : access Gtk_Button_RecordTo API doc
To spec
To body;

      Focus_On_Click : Boolean := True);

   function Get_Focus_On_ClickTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body)

```
      return Boolean; 
```

   --  Sets whether the button will grab focus when it is clicked with the

```
   --  mouse. 
```

   --  Setting Focus_On_Click to False is useful in contexts like toolbars

   --  where the focus should not be removed from the main area of the

```
   --  application. 
```
```
 
```

   procedure Set_ImageTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body;

      Image  : access Gtk.Widget.Gtk_Widget_RecordTo API doc
To spec
To body'Class);

```
   function Get_ImageTo API doc
To body 
```

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body)

      return Gtk.Widget.Gtk_WidgetTo API doc
To spec;

```
   --  Set the image of the button. 
```

   --  You do not need to call Show on the image yourself.

   --  This settings might have no effect, depending on the theme configuration

   --  that the application's user is using (in particular, the setting

   --  "gtk-button-images" indicates whether or not images should be displayed

```
   --  in buttons). 
```
```
 
```

   function Get_Image_PositionTo API doc
To body

     (Button : access Gtk_Button_RecordTo API doc
To spec
To body) return Gtk.Enums.Gtk_Position_TypeTo API doc
To spec;

   procedure Set_Image_PositionTo API doc
To body

     (Button   : access Gtk_Button_RecordTo API doc
To spec
To body;

      PositionTo API doc
To body : Gtk.Enums.Gtk_Position_TypeTo API doc
To spec);

   --  Gets the position of the image relative to the text

```
   --  inside the button. 
```
```
   --  Since: 2.10 
```
```
 
```
```
   ---------------------- 
```
```
   -- Signals emission -- 
```
```
   ---------------------- 
```
```
 
```

   procedure PressedTo API doc
To body  (Button : access Gtk_Button_RecordTo API doc
To spec
To body);

   --  Send the "pressed" signal to the button

```
 
```

   procedure ReleasedTo API doc
To body (Button : access Gtk_Button_RecordTo API doc
To spec
To body);

   --  Send the "release" signal to the button

```
 
```

   procedure ClickedTo API doc
To body  (Button : access Gtk_Button_RecordTo API doc
To spec
To body);

   --  Send the "clicked" signal to the button

```
 
```

   procedure EnterTo API doc
To body    (Button : access Gtk_Button_RecordTo API doc
To spec
To body);

   --  Send the "enter" signal to the button

```
 
```

   procedure LeaveTo API doc
To body    (Button : access Gtk_Button_RecordTo API doc
To spec
To body);

   --  Send the "leave" signal to the button

```
 
```
```
   ---------------- 
```
```
   -- Properties -- 
```
```
   ---------------- 
```

   --  The following properties are defined for this widget. See

   --  Glib.Properties for more information on properties.

```
 
```
```
   --  <properties> 
```
```
   --  Name:  Label_Property 
```
```
   --  Type:  UTF8_String 
```
```
   --  Flags: read-write 
```

   --  Descr: Changes the text contained in the button.

   --  See also: Same as calling Set_Label directly.

```
   -- 
```
```
   --  Name:  Relief_Property 
```
```
   --  Type:  Gtk_Relief_Style 
```
```
   --  Flags: read-write 
```

   --  Descr: Changes the relief used to draw the border of the button.

   --  See also: Same as calling Set_Relief directly.

```
   -- 
```
```
   --  Name:  Use_Underline_Property 
```
```
   --  Type:  Boolean 
```
```
   --  Flags: read-write 
```

   --  See also: Same as calling Set_Use_Underline directly

```
   -- 
```
```
   --  Name:  Use_Stock_Property 
```
```
   --  Type:  Boolean 
```
```
   --  Flags: read-write 
```

   --  See also: Same as calling Set_Use_Stock directly

```
   -- 
```
```
   --  Name:  Focus_On_Click_Property 
```
```
   --  Type:  Boolean 
```
```
   --  Flags: read-write 
```

   --  See also: Same as calling Set_Focus_On_Click directly

```
   -- 
```
```
   --  Name:  Image_Property 
```
```
   --  Type:  Object 
```

   --  Descr: Child widget to appear next to the button text

```
   -- 
```
```
   --  Name:  Image_Position_Property 
```
```
   --  Type:  Enum 
```

   --  Descr: The position of the image relative to the text

```
   -- 
```
```
   --  Name:  Xalign_Property 
```
```
   --  Type:  Float 
```

   --  Descr: Horizontal position of child in available space. 0.0 is left

   --         aligned, 1.0 is right aligned

```
   -- 
```
```
   --  Name:  Yalign_Property 
```
```
   --  Type:  Float 
```

   --  Descr: Vertical position of child in available space. 0.0 is top

   --         aligned, 1.0 is bottom aligned

```
   --  </properties> 
```
```
 
```

   Label_Property          : constant Glib.Properties.Property_StringTo API doc
To spec;

   Relief_Property         : constant Gtk.Enums.Property_Gtk_Relief_StyleTo API doc
To spec;

   Use_Underline_Property  : constant Glib.Properties.Property_BooleanTo API doc
To spec;

   Use_Stock_Property      : constant Glib.Properties.Property_BooleanTo API doc
To spec;

   Focus_On_Click_Property : constant Glib.Properties.Property_BooleanTo API doc
To spec;

   Image_Property          : constant Glib.Properties.Property_ObjectTo API doc
To spec;

   --  Image_Position_Property : constant Glib.Properties.Property_Enum;

   Xalign_Property         : constant Glib.Properties.Property_FloatTo API doc
To spec;

   Yalign_Property         : constant Glib.Properties.Property_FloatTo API doc
To spec;

```
 
```
```
   ---------------------- 
```
```
   -- 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:  Child_Displacement_X_Property

```
   --  Type:  Int 
```

   --  Descr: How far in the x direction to move the child when the button is

```
   --         depressed 
```
```
   -- 
```

   --  Name:  Child_Displacement_Y_Property

```
   --  Type:  Int 
```

   --  Descr: How far in the y direction to move the child when the button is

```
   --         depressed 
```
```
   -- 
```
```
   --  Name:  Default_Border_Property 
```
```
   --  Type:  Boxed 
```

   --  Descr: Extra space to add for CAN_DEFAULT buttons

```
   -- 
```

   --  Name:  Default_Outside_Border_Property

```
   --  Type:  Boxed 
```

   --  Descr: Extra space to add for CAN_DEFAULT buttons that is always drawn

```
   --         outside the border 
```
```
   -- 
```
```
   --  Name:  Displace_Focus_Property 
```
```
   --  Type:  Boolean 
```

   --  Descr: Whether the child_displacement_x/_y properties should also affect

```
   --         the focus rectangle 
```
```
   -- 
```
```
   --  Name:  Image_Spacing_Property 
```
```
   --  Type:  Int 
```

   --  Descr: Spacing in pixels between the image and label

```
   -- 
```
```
   --  Name:  Inner_Border_Property 
```
```
   --  Type:  Boxed 
```

   --  Descr: Border between button edges and child

```
   --  </style_properties> 
```
```
 
```

   Child_Displacement_X_Property   : constant Glib.Properties.Property_IntTo API doc
To spec;

   Child_Displacement_Y_Property   : constant Glib.Properties.Property_IntTo API doc
To spec;

   --  Default_Border_Property      : constant Glib.Properties.Property_Boxed;

   --  Default_Outside_Border_Property :

   --     constant Glib.Properties.Property_Boxed;

   Displace_Focus_Property         : constant Glib.Properties.Property_BooleanTo API doc
To spec;

   Image_Spacing_Property : constant Glib.Properties.Property_IntTo API doc
To spec;

   --  Inner_Border_Property : constant Glib.Properties.Property_Boxed;

```
 
```
```
   ------------- 
```
```
   -- Signals -- 
```
```
   ------------- 
```
```
 
```
```
   --  <signals> 
```

   --  The following new signals are defined for this widget:

```
   -- 
```
```
   --  - "clicked" 
```

   --    procedure Handler (Button : access Gtk_Button_Record'Class);

   --    Emitted when the button has been clicked on by the user. This is the

   --    signal you should use to start your own actions.

```
   -- 
```
```
   --  - "pressed" 
```

   --    procedure Handler (Button : access Gtk_Button_Record'Class);

   --    Emitted when the user presses the mouse button on

   --    the widget. The default implementation modifies the widget state

```
   --    and its visual aspect. 
```
```
   -- 
```
```
   --  - "released" 
```

   --    procedure Handler (Button : access Gtk_Button_Record'Class);

   --    Emitted when the user releases the mouse button and

   --    is inside of the widget. The default implementation modifies the

   --    widget state and its visual aspect. If the mouse is still inside

   --    the widget, then the "clicked" signal is emitted.

```
   -- 
```
```
   --  - "enter" 
```

   --    procedure Handler (Button : access Gtk_Button_Record'Class);

   --    Emitted when the mouse enters the button. The clicked

   --    signal can only be emitted when the mouse is inside the button.

```
   -- 
```
```
   --  - "leave" 
```

   --    procedure Handler (Button : access Gtk_Button_Record'Class);

   --    Emitted when the mouse leaves the button.

```
   -- 
```
```
   --  - "activate" 
```

   --    procedure Handler (Button : access Gtk_Button_Record'Class);

   --    You should emit this signal to force the activation of this widget, as

   --    if the user has clicked on it. This is generally only useful when

```
   --    bound to a key binding. 
```
```
   -- 
```
```
   --  </signals> 
```
```
 
```

   Signal_Clicked  : constant Glib.Signal_NameTo API doc
To spec := "clicked";

   Signal_Pressed  : constant Glib.Signal_NameTo API doc
To spec := "pressed";

   Signal_Released : constant Glib.Signal_NameTo API doc
To spec := "released";

   Signal_Enter    : constant Glib.Signal_NameTo API doc
To spec := "enter";

   Signal_Leave    : constant Glib.Signal_NameTo API doc
To spec := "leave";

   Signal_Activate : constant Glib.Signal_NameTo API doc
To spec := "activate";

```
 
```
```
private 
```

   type Gtk_Button_RecordTo API doc
To spec is new Bin.Gtk_Bin_RecordTo API doc
To spec
To body with null record;

```
 
```

   --  Image_Position_Property : constant Glib.Properties.Property_Enum :=

   --    Glib.Properties.Build ("image-position");

   Label_PropertyTo API doc
To spec  : constant Glib.Properties.Property_StringTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("label");

   Relief_PropertyTo API doc
To spec : constant Gtk.Enums.Property_Gtk_Relief_StyleTo API doc
To spec :=

     Gtk.Enums.BuildTo API doc
To spec
To body ("relief");

   Use_Underline_PropertyTo API doc
To spec  : constant Glib.Properties.Property_BooleanTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("use-underline");

   Use_Stock_PropertyTo API doc
To spec      : constant Glib.Properties.Property_BooleanTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("use-stock");

   Focus_On_Click_PropertyTo API doc
To spec : constant Glib.Properties.Property_BooleanTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("focus-on-click");

   Image_PropertyTo API doc
To spec : constant Glib.Properties.Property_ObjectTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("image");

   Xalign_PropertyTo API doc
To spec : constant Glib.Properties.Property_FloatTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("xalign");

   Yalign_PropertyTo API doc
To spec : constant Glib.Properties.Property_FloatTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("yalign");

```
 
```

   Child_Displacement_X_PropertyTo API doc
To spec : constant Glib.Properties.Property_IntTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("child-displacement-x");

   Child_Displacement_Y_PropertyTo API doc
To spec : constant Glib.Properties.Property_IntTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("child-displacement-y");

--     Default_Border_Property : constant Glib.Properties.Property_Boxed :=

--       Glib.Properties.Build ("default-border");

   --  Default_Outside_Border_Property : constant

   --    Glib.Properties.Property_Boxed :=

   --    Glib.Properties.Build ("default-outside-border");

   Displace_Focus_PropertyTo API doc
To spec : constant Glib.Properties.Property_BooleanTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("displace-focus");

   Image_Spacing_PropertyTo API doc
To spec : constant Glib.Properties.Property_IntTo API doc
To spec :=

     Glib.Properties.BuildTo API doc
To spec
To body ("image-spacing");

   --  Inner_Border_Property : constant Glib.Properties.Property_Boxed :=

   --    Glib.Properties.Build ("inner-border");

```
 
```

   pragma Import (C, Get_TypeTo API doc
To spec, "gtk_button_get_type");

end Gtk.ButtonTo API doc
To spec
To body;

Documentation