1/*  This file is part of Cawbird, a Gtk+ linux Twitter client forked from Corebird.
2 *  Copyright (C) 2013 Timm Bäder (Corebird)
3 *
4 *  Cawbird is free software: you can redistribute it and/or modify
5 *  it under the terms of the GNU General Public License as published by
6 *  the Free Software Foundation, either version 3 of the License, or
7 *  (at your option) any later version.
8 *
9 *  Cawbird is distributed in the hope that it will be useful,
10 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 *  GNU General Public License for more details.
13 *
14 *  You should have received a copy of the GNU General Public License
15 *  along with cawbird.  If not, see <http://www.gnu.org/licenses/>.
16 */
17
18class ImpostorWidget : Gtk.Image {
19  private new Cairo.Surface? surface = null;
20
21
22  public ImpostorWidget () {
23    this.halign = Gtk.Align.FILL;
24    this.valign = Gtk.Align.FILL;
25  }
26
27
28
29  public override bool draw (Cairo.Context ct) {
30    if (this.surface == null)
31      return false;
32
33    ct.set_source_surface (this.surface, 0, 0);
34    ct.rectangle (0, 0, this.get_allocated_width (), this.get_allocated_height ());
35    ct.fill ();
36    return false;
37  }
38
39
40  public void clone (Gtk.Widget widget) {
41    int widget_width  = widget.get_allocated_width ();
42    int widget_height = widget.get_allocated_height ();
43
44    this.surface = widget.get_window ().create_similar_surface (Cairo.Content.COLOR_ALPHA,
45                                                                widget_width,
46                                                                widget_height);
47    var ct = new Cairo.Context (surface);
48    widget.draw (ct);
49  }
50}
51