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------------------------------------------------------------------------------
-- GtkAda - Ada95 binding for the Gimp Toolkit --
-- --
-- Copyright (C) 2003-2018, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, 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 MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- --
-- --
-- --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
with Glib.Object; use Glib.Object;
with Gtk; use Gtk;
with Gtk.Box; use Gtk.Box;
with Gtk.Button; use Gtk.Button;
with Gtk.Frame; use Gtk.Frame;
with Gtk.Widget; use Gtk.Widget;
with Gtkada.Multi_Paned; use Gtkada.Multi_Paned;
with Gtk.Toolbar; use Gtk.Toolbar;
with Gtkada.Handlers; use Gtkada.Handlers;
with Gtk.Vbutton_Box; use Gtk.Vbutton_Box;
with Gtk.Toggle_Button; use Gtk.Toggle_Button;
with Gtk.Tool_Button; use Gtk.Tool_Button;
with Gtk.Enums; use Gtk.Enums;
package body Create_Splittable is
function Create_Child
(Bar : Gtk_Toolbar; Title : String) return Gtk_Widget;
procedure On_Destroy (Button : access GObject_Record'Class);
procedure On_Toggle (Button : access Gtk_Widget_Record'Class);
procedure On_Resize (Button : access Gtk_Widget_Record'Class);
procedure On_Split_V (Button : access Gtk_Widget_Record'Class);
procedure On_Split_H (Button : access Gtk_Widget_Record'Class);
procedure On_Fixed (Button : access Gtk_Widget_Record'Class);
procedure On_Opaque (Button : access Gtk_Widget_Record'Class);
Pane : Gtkada_Multi_Paned;
Item : Natural := 6;
Opaque : Boolean := False;
----------
-- Help --
----------
function Help return String is
begin
return "A Gtkada-specific widget, where children can be resized"
& " interactively by the user, as well as splitted." & ASCII.LF
& ASCII.LF
& "It is similar to a Gtk.Paned widget, but with a number of"
& " differences: there are multiple children (only two for a"
& " Gtk_Paned), which cannot be emulated by nested multiple"
& " Gtk_Paned widgets. For instance, if you drag the right-most"
& " vertical separator towards the left, it will eventually also"
& " move the left-most separator. This would not happen if you"
& " had two nested Gtk_Paned." & ASCII.LF
& ASCII.LF
& "It provides non-opaque resizing, whereas a Gtk_Paned only"
& " provides opaque resizing. The latter can be slow when the"
& " application is running on a remote machine with a local"
& " display.";
end Help;
---------------
-- On_Opaque --
---------------
procedure On_Opaque (Button : access Gtk_Widget_Record'Class) is
pragma Unreferenced (Button);
begin
Opaque := not Opaque;
Set_Opaque_Resizing (Pane, Opaque);
end On_Opaque;
----------------
-- On_Destroy --
----------------
procedure On_Destroy (Button : access GObject_Record'Class) is
begin
Destroy (Gtk_Widget (Button));
end On_Destroy;
---------------
-- On_Toggle --
---------------
procedure On_Toggle (Button : access Gtk_Widget_Record'Class) is
begin
if Button.Get_Visible then
Hide (Button);
else
Show (Button);
end if;
end On_Toggle;
---------------
-- On_Resize --
---------------
procedure On_Resize (Button : access Gtk_Widget_Record'Class) is
begin
Set_Size (Pane, Button, 100, 100);
end On_Resize;
----------------
-- On_Split_V --
----------------
procedure On_Split_V (Button : access Gtk_Widget_Record'Class) is
Child : constant Gtk_Widget := Create_Child (null, Integer'Image (Item));
begin
Item := Item + 1;
Split (Pane, Button, Child, Orientation_Vertical);
end On_Split_V;
----------------
-- On_Split_H --
----------------
procedure On_Split_H (Button : access Gtk_Widget_Record'Class) is
Child : constant Gtk_Widget := Create_Child (null, Integer'Image (Item));
begin
Item := Item + 1;
Split (Pane, Button, Child, Orientation_Horizontal);
end On_Split_H;
--------------
-- On_Fixed --
--------------
procedure On_Fixed (Button : access Gtk_Widget_Record'Class) is
begin
Set_Size (Pane, Button,
Get_Allocated_Width (Button),
Get_Allocated_Height (Button),
Fixed_Size => True);
end On_Fixed;
------------------
-- Create_Child --
------------------
function Create_Child
(Bar : Gtk_Toolbar; Title : String) return Gtk_Widget
is
Frame : Gtk_Frame;
Box : Gtk_Vbutton_Box;
Button : Gtk_Button;
Item : Gtk_Tool_Button;
begin
Gtk_New (Frame);
Gtk_New (Box);
Add (Frame, Box);
Set_Layout (Box, Buttonbox_Start);
Gtk_New (Button, "Destroy_" & Title);
Pack_Start (Box, Button, Expand => False);
Button.On_Clicked (On_Destroy'Access, Slot => Frame);
Gtk_New (Button, "Resize_" & Title);
Pack_Start (Box, Button, Expand => False);
Widget_Callback.Object_Connect
(Button, "clicked", On_Resize'Unrestricted_Access, Frame);
Gtk_New (Button, "Split_V " & Title);
Pack_Start (Box, Button, Expand => False);
Widget_Callback.Object_Connect
(Button, "clicked", On_Split_V'Unrestricted_Access, Frame);
Gtk_New (Button, "Split_H " & Title);
Pack_Start (Box, Button, Expand => False);
Widget_Callback.Object_Connect
(Button, "clicked", On_Split_H'Unrestricted_Access, Frame);
Gtk_New (Button, "Fixed_Size " & Title);
Pack_Start (Box, Button, Expand => False);
Widget_Callback.Object_Connect
(Button, "clicked", On_Fixed'Unrestricted_Access, Frame);
if Bar /= null then
Gtk_New (Item, Label => "Toggle_" & Title);
Add (Bar, Item);
Widget_Callback.Object_Connect
(Item, "clicked",
Widget_Callback.To_Marshaller (On_Toggle'Unrestricted_Access),
Frame);
end if;
Show_All (Frame);
return Gtk_Widget (Frame);
end Create_Child;
---------
-- Run --
---------
procedure Run (Frame : access Gtk.Frame.Gtk_Frame_Record'Class) is
Button, Button1, Button2, Button3, Button4 : Gtk_Widget;
Bar : Gtk_Toolbar;
Box : Gtk_Box;
Toggle : Gtk_Toggle_Button;
begin
Gtk_New_Vbox (Box, Homogeneous => False);
Add (Frame, Box);
Gtk_New (Bar);
Pack_Start (Box, Bar, Expand => False);
Gtk_New (Toggle, "Opaque Resizing");
Pack_Start (Box, Toggle, Expand => False);
Widget_Callback.Connect (Toggle, "toggled", On_Opaque'Access);
Gtk_New (Pane);
Pack_Start (Box, Pane, Expand => True, Fill => True);
Button1 := Create_Child (Bar, "1");
Add_Child (Pane, Button1);
Button2 := Create_Child (Bar, "2");
Add_Child (Pane, Button2); -- Should split horizontally
Button3 := Create_Child (Bar, "3");
Add_Child (Pane, Button3); -- Should split horizontally
Button4 := Create_Child (Bar, "4");
Split (Pane, Button2, Button4, Orientation_Vertical);
Button := Create_Child (Bar, "5");
Split (Pane, Button4, Button, Orientation_Horizontal);
Show_All (Frame);
end Run;
end Create_Splittable;
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