File: gtk-clipboard.adb

package info (click to toggle)
libgtkada2 2.8.1-6lenny3
  • links: PTS, VCS
  • area: main
  • in suites: lenny
  • size: 13,496 kB
  • ctags: 3,886
  • sloc: ada: 103,189; ansic: 45,411; perl: 5,500; sh: 2,812; makefile: 1,169; xml: 19
file content (308 lines) | stat: -rw-r--r-- 10,162 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
-----------------------------------------------------------------------
--               GtkAda - Ada95 binding for Gtk+/Gnome               --
--                                                                   --
--                  Copyright (C) 2002-2006, 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.                                       --
--                                                                   --
-----------------------------------------------------------------------

with Ada.Unchecked_Conversion;
with Gdk.Types;             use Gdk.Types;
with Interfaces.C.Strings;  use Interfaces.C.Strings;
with Gtk.Selection;         use Gtk.Selection;
with Gtkada.Types;
with System;                use System;

package body Gtk.Clipboard is

   --------------
   -- Set_Text --
   --------------

   procedure Set_Text
     (Clipboard : Gtk_Clipboard;
      Text      : UTF8_String)
   is
      procedure Internal
        (Clipboard : Gtk_Clipboard;
         Str       : UTF8_String;
         Len       : Integer);
      pragma Import (C, Internal, "gtk_clipboard_set_text");

   begin
      Internal (Clipboard, Text, Text'Length);
   end Set_Text;

   -------------------
   -- Wait_For_Text --
   -------------------

   function Wait_For_Text (Clipboard : Gtk_Clipboard) return UTF8_String is
      function Internal (Clipboard : Gtk_Clipboard) return chars_ptr;
      pragma Import (C, Internal, "gtk_clipboard_wait_for_text");

      S : constant chars_ptr := Internal (Clipboard);

   begin
      if S /= Null_Ptr then
         declare
            Result : constant UTF8_String := Value (S);
         begin
            Gtkada.Types.g_free (S);
            return Result;
         end;
      end if;

      return "";
   end Wait_For_Text;

   ----------------------------
   -- Wait_Is_Text_Available --
   ----------------------------

   function Wait_Is_Text_Available
     (Clipboard : Gtk_Clipboard) return Boolean
   is
      function Internal (Clipboard : Gtk_Clipboard) return Gboolean;
      pragma Import (C, Internal, "gtk_clipboard_wait_is_text_available");
   begin
      return Internal (Clipboard) /= 0;
   end Wait_Is_Text_Available;

   ---------------
   -- Get_Owner --
   ---------------

   function Get_Owner
     (Clipboard : Gtk_Clipboard) return Glib.Object.GObject
   is
      function Internal (Clipboard : Gtk_Clipboard) return System.Address;
      pragma Import (C, Internal, "gtk_clipboard_get_owner");
      Stub : GObject_Record;
   begin
      return GObject (Get_User_Data (Internal (Clipboard), Stub));
   end Get_Owner;

   -------------------
   -- Set_Can_Store --
   -------------------

   procedure Set_Can_Store
     (Clipboard : Gtk_Clipboard;
      Targets   : Gtk.Selection.Target_Entry_Array)
   is
      procedure Internal
        (Clipboard : Gtk_Clipboard;
         Targets   : System.Address;
         N_Targets : Gint);
      pragma Import (C, Internal, "gtk_clipboard_set_can_store");
   begin
      if Targets'Length = 0 then
         Internal (Clipboard, System.Null_Address, 0);
      else
         Internal (Clipboard, Targets (Targets'First)'Address, Targets'Length);
      end if;
   end Set_Can_Store;

   -------------------
   -- Set_With_Data --
   -------------------

   function Set_With_Data
     (Clipboard  : Gtk_Clipboard;
      Targets    : Target_Entry_Array;
      Get_Func   : Gtk_Clipboard_Get_Func;
      Clear_Func : Gtk_Clipboard_Clear_Func;
      User_Data  : System.Address)
      return Boolean
   is
      function Internal
        (Clipboard  : Gtk_Clipboard;
         Targets    : System.Address;
         N_Targets  : Guint;
         Get_Func   : Gtk_Clipboard_Get_Func;
         Clear_Func : Gtk_Clipboard_Clear_Func;
         User_Data  : System.Address)
         return Gboolean;
      pragma Import (C, Internal, "gtk_clipboard_set_with_data");
   begin
      return Boolean'Val
        (Internal (Clipboard, Targets (Targets'First)'Address,
         Targets'Length, Get_Func, Clear_Func, User_Data));
   end Set_With_Data;

   --------------------
   -- Set_With_Owner --
   --------------------

   function Set_With_Owner
     (Clipboard  : Gtk_Clipboard;
      Targets    : Target_Entry_Array;
      Get_Func   : Gtk_Clipboard_Get_Func;
      Clear_Func : Gtk_Clipboard_Clear_Func;
      Owner      : access Glib.Object.GObject_Record'Class)
      return Boolean
   is
      function Internal
        (Clipboard  : Gtk_Clipboard;
         Targets    : System.Address;
         N_Targets  : Guint;
         Get_Func   : Gtk_Clipboard_Get_Func;
         Clear_Func : Gtk_Clipboard_Clear_Func;
         Owner      : System.Address)
         return Gboolean;
      pragma Import (C, Internal, "gtk_clipboard_set_with_owner");
   begin
      return Boolean'Val
        (Internal (Clipboard, Targets (Targets'First)'Address,
         Targets'Length, Get_Func, Clear_Func, Get_Object (Owner)));
   end Set_With_Owner;

   -------------------
   -- Get_Clipboard --
   -------------------

   function Get_Clipboard
     (Widget    : access Gtk.Widget.Gtk_Widget_Record'Class;
      Selection : Gdk.Types.Gdk_Atom) return Gtk_Clipboard
   is
      function Internal
        (Widget : System.Address; Selection : Gdk_Atom) return Gtk_Clipboard;
      pragma Import (C, Internal, "gtk_widget_get_clipboard");
      --  External binding: gtk_widget_get_clipboard
   begin
      return Internal (Get_Object (Widget), Selection);
   end Get_Clipboard;

   -----------------------------
   -- Wait_Is_Image_Available --
   -----------------------------

   function Wait_Is_Image_Available
     (Clipboard : Gtk_Clipboard) return Boolean
   is
      function Internal (Clipboard : Gtk_Clipboard) return Gboolean;
      pragma Import (C, Internal, "gtk_clipboard_wait_is_image_available");
   begin
      return Boolean'Val (Internal (Clipboard));
   end Wait_Is_Image_Available;

   ------------------------------
   -- Wait_Is_Target_Available --
   ------------------------------

   function Wait_Is_Target_Available
     (Clipboard : Gtk_Clipboard;
      Target    : Gdk_Atom)
      return Boolean
   is
      function Internal
        (Clipboard : Gtk_Clipboard;
         Target    : Gdk_Atom)
         return Gboolean;
      pragma Import (C, Internal, "gtk_clipboard_wait_is_target_available");
   begin
      return Boolean'Val (Internal (Clipboard, Target));
   end Wait_Is_Target_Available;

   ----------------------
   -- Wait_For_Targets --
   ----------------------

   function Wait_For_Targets
     (Clipboard : Gtk_Clipboard) return Gdk.Types.Gdk_Atom_Array
   is
      type Atom_Big_Array is array (Natural) of Gdk_Atom;  --  GdkAtom*
      type Atom_Big_Array_Access is access Atom_Big_Array; --  GdkAtom**

      function Convert is new Ada.Unchecked_Conversion
        (System.Address, Atom_Big_Array_Access);

      function Internal
        (Clipboard : Gtk_Clipboard;
         Targets   : access System.Address;
         N_Targets : access Gint) return Gboolean;
      pragma Import (C, Internal, "gtk_clipboard_wait_for_targets");

      procedure Free (Targets : Atom_Big_Array);
      pragma Import (C, Free, "g_free");
      --  External binding: g_free

      Success   : Gboolean;
      Output    : aliased System.Address;
      List      : Atom_Big_Array_Access;   --   GdkAtom**
      pragma Warnings (Off, List);
      N_Targets : aliased Gint;
   begin
      Success := Internal
        (Clipboard, Output'Unchecked_Access, N_Targets'Unchecked_Access);
      if Success = 0 or else Output = System.Null_Address then
         return (1 .. 0 => Gdk.Types.Gdk_None);
      else
         List := Convert (Output);
         declare
            Result : Gdk.Types.Gdk_Atom_Array (1 .. Natural (N_Targets));
         begin
            for R in 0 .. Natural (N_Targets) - 1 loop
               Result (R + 1) := List (R);
            end loop;

            Free (List.all);
            return Result;
         end;
      end if;
   end Wait_For_Targets;

   ----------------------
   -- Request_Contents --
   ----------------------

   procedure Request_Contents
     (Clipboard : Gtk_Clipboard;
      Target    : Gdk_Atom;
      Callback  : Gtk_Clipboard_Received_Func;
      User_Data : System.Address)
   is
      procedure Internal
        (Clipboard : Gtk_Clipboard;
         Target    : Gdk_Atom;
         Callback  : Gtk_Clipboard_Received_Func;
         User_Data : System.Address);
      pragma Import (C, Internal, "gtk_clipboard_request_contents");
   begin
      Internal (Clipboard, Target, Callback, User_Data);
   end Request_Contents;

   ---------------------
   -- Request_Targets --
   ---------------------

   procedure Request_Targets
     (Clipboard : Gtk_Clipboard;
      Callback  : Gtk_Clipboard_Targets_Received_Func;
      User_Data : System.Address)
   is
      procedure Internal
        (Clipboard : Gtk_Clipboard;
         Callback  : Gtk_Clipboard_Targets_Received_Func;
         User_Data : System.Address);
      pragma Import (C, Internal, "gtk_clipboard_request_targets");
   begin
      Internal (Clipboard, Callback, User_Data);
   end Request_Targets;

end Gtk.Clipboard;