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-----------------------------------------------------------------------
-- GtkAda - Ada95 binding for the Gimp Toolkit --
-- --
-- Copyright (C) 2006-2013, 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. --
-- --
-----------------------------------------------------------------------
with Glib; use Glib;
with Gdk.Pixbuf; use Gdk.Pixbuf;
with Gdk.Property; use Gdk.Property;
with Gdk.Types; use Gdk.Types;
with Gtkada.Handlers; use Gtkada.Handlers;
with Gtk; use Gtk;
with Gtk.Box; use Gtk.Box;
with Gtk.Button; use Gtk.Button;
with Gtk.Cell_Renderer_Text; use Gtk.Cell_Renderer_Text;
with Gtk.Clipboard; use Gtk.Clipboard;
with Gtk.Enums; use Gtk.Enums;
with Gtk.Frame; use Gtk.Frame;
with Gtk.Hbutton_Box; use Gtk.Hbutton_Box;
with Gtk.Image; use Gtk.Image;
with Gtk.List_Store; use Gtk.List_Store;
with Gtk.Scrolled_Window; use Gtk.Scrolled_Window;
with Gtk.Selection; use Gtk.Selection;
with Gtk.Text_Buffer; use Gtk.Text_Buffer;
with Gtk.Text_Iter; use Gtk.Text_Iter;
with Gtk.Text_View; use Gtk.Text_View;
with Gtk.Tree_Model; use Gtk.Tree_Model;
with Gtk.Tree_Selection; use Gtk.Tree_Selection;
with Gtk.Tree_View; use Gtk.Tree_View;
with Gtk.Tree_View_Column; use Gtk.Tree_View_Column;
with Gtk.Widget; use Gtk.Widget;
with System; use System;
package body Create_Clipboard is
procedure Refresh (Button : access Gtk_Widget_Record'Class);
-- Refresh the window to show the current clipboard contents
procedure On_Select_Format (View : access Gtk_Widget_Record'Class);
-- Called when a new format is selected
procedure On_Image_Retrieved
(Clipboard : Gtk_Clipboard;
Pixbuf : System.Address;
Data : System.Address);
pragma Convention (C, On_Image_Retrieved);
-- Called when the image has been retrieved from the clipboard
List : Gtk_List_Store;
Contents : Gtk_Text_Buffer;
Image : Gtk_Image;
----------
-- Help --
----------
function Help return String is
begin
return "This demo shows how to interface to the system clipboard. You"
& " should select text or images in some other application, copy them"
& " to the clipboard (generally through Edit->Copy), and then click on"
& " Refresh in this demo." & ASCII.LF
& "The data contained in a clipboard can be retrieved in multiple"
& " formats (ASCII text, UTF8 text, image, application-dependent types"
& ",...). This demo shows the format that the current clipboard"
& " can be retrieved in. Double-clicking on any of the format will"
& " retrieve the selection in that format, and display it if possible"
& ASCII.LF
& "Try also copying an image into the clipboard, it will be displayed."
& " Big images will take time to be retrieved asynchronously however.";
end Help;
------------------------
-- On_Image_Retrieved --
------------------------
procedure On_Image_Retrieved
(Clipboard : Gtk_Clipboard;
Pixbuf : System.Address;
Data : System.Address)
is
pragma Unreferenced (Clipboard);
pragma Unreferenced (Data);
First : Gtk_Text_Iter;
P : constant Gdk.Pixbuf.Gdk_Pixbuf := Gdk.Pixbuf.Convert (Pixbuf);
begin
if P /= null then
Set (Image, P);
else
Get_Start_Iter (Contents, First);
Insert (Contents, First,
"!! Could not retrieve the image from the clipboard!!!"
& ASCII.LF);
end if;
end On_Image_Retrieved;
-------------
-- Refresh --
-------------
procedure Refresh (Button : access Gtk_Widget_Record'Class) is
pragma Unreferenced (Button);
Clipboard : constant Gtk_Clipboard := Get;
Targets : constant Gdk_Atom_Array := Wait_For_Targets (Clipboard);
Iter : Gtk_Tree_Iter;
begin
Clear (List);
for T in reverse Targets'Range loop
Insert (List, Iter, 0);
Set (List, Iter, 0, Atom_Name (Targets (T)));
end loop;
end Refresh;
----------------------
-- On_Select_Format --
----------------------
procedure On_Select_Format (View : access Gtk_Widget_Record'Class) is
Clipboard : constant Gtk_Clipboard := Get;
Model : Gtk_Tree_Model;
Iter : Gtk_Tree_Iter;
Data : Selection_Data;
First, Last : Gtk_Text_Iter;
As_String : Boolean;
As_Image : Boolean;
begin
Clear (Image);
Get_Start_Iter (Contents, First);
Get_End_Iter (Contents, Last);
Delete (Contents, First, Last);
Get_Start_Iter (Contents, First);
As_String := Wait_Is_Text_Available (Clipboard);
As_Image := Wait_Is_Image_Available (Clipboard);
Insert
(Contents,
First,
"Can be retrieved as a string: "
& Boolean'Image (As_String)
& ASCII.LF);
Insert
(Contents,
First,
"Can be retrieved as an image: "
& Boolean'Image (As_Image)
& ASCII.LF);
if As_Image then
Request_Image
(Clipboard, On_Image_Retrieved'Access, System.Null_Address);
end if;
Get_Selected (Get_Selection (Gtk_Tree_View (View)), Model, Iter);
if Iter = Null_Iter then
return;
end if;
declare
Format : constant String := Get_String (Model, Iter, 0);
begin
Data := Wait_For_Contents (Clipboard, Atom_Intern (Format));
if Data /= null then
Insert
(Contents,
First,
"Target= "
& Atom_Name (Get_Target (Data))
& ASCII.LF);
Insert
(Contents,
First,
"Type= "
& Atom_Name (Get_Type (Data))
& ASCII.LF);
Insert
(Contents,
First,
"Format= "
& Gint'Image (Get_Format (Data))
& " (bits/char for strings for instance)"
& ASCII.LF);
Insert
(Contents,
First,
"Length= "
& Gint'Image (Get_Length (Data))
& ASCII.LF);
if As_String then
Insert
(Contents,
First,
"As_String=" & Get_Data_As_String (Data));
end if;
Selection_Data_Free (Data);
end if;
end;
end On_Select_Format;
---------
-- Run --
---------
procedure Run (Frame : access Gtk.Frame.Gtk_Frame_Record'Class) is
Box1, Box2 : Gtk_Box;
Bbox : Gtk_Hbutton_Box;
View : Gtk_Tree_View;
Col_Pos : Gint;
pragma Unreferenced (Col_Pos);
Col : Gtk_Tree_View_Column;
Render : Gtk_Cell_Renderer_Text;
Button : Gtk_Button;
Scrolled : Gtk_Scrolled_Window;
Text : Gtk_Text_View;
begin
Gtk.Frame.Set_Label (Frame, "Clipboard");
Gtk_New_Vbox (Box1, Homogeneous => False, Spacing => 0);
Add (Frame, Box1);
Gtk_New_Hbox (Box2, Homogeneous => False);
Pack_Start (Box1, Box2, Expand => True);
Gtk_New (Bbox);
Pack_Start (Box2, Bbox, Expand => False);
Gtk_New (Button, "Refresh");
Widget_Callback.Connect
(Button, Gtk.Button.Signal_Clicked, Refresh'Access);
Pack_Start (Bbox, Button, Expand => False);
Gtk_New (List, (0 => GType_String));
Gtk_New (Render);
Gtk_New (Scrolled);
Set_Policy (Scrolled, Policy_Automatic, Policy_Automatic);
Pack_Start (Box2, Scrolled, Expand => True);
Gtk_New (View, List);
Add (Scrolled, View);
Set_Headers_Visible (View, False);
Widget_Callback.Object_Connect
(Get_Selection (View), "changed", On_Select_Format'Access, View);
Gtk_New (Col);
Col_Pos := Insert_Column (View, Col);
Pack_Start (Col, Render, Expand => True);
Add_Attribute (Col, Render, "text", 0);
Gtk_New (Scrolled);
Set_Policy (Scrolled, Policy_Automatic, Policy_Automatic);
Pack_Start (Box1, Scrolled, Expand => True);
Gtk_New (Contents);
Gtk_New (Text, Contents);
Add (Scrolled, Text);
Gtk_New (Image);
Pack_Start (Box1, Image);
Refresh (Button);
Show_All (Frame);
end Run;
end Create_Clipboard;
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