2 Copyright (C) 2014 Paul Davis
4 This program 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 2 of the License, or
7 (at your option) any later version.
9 This program 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.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "canvas/scroll_group.h"
23 using namespace ArdourCanvas;
25 ScrollGroup::ScrollGroup (Group* parent, ScrollSensitivity s)
27 , _scroll_sensitivity (s)
31 ScrollGroup::ScrollGroup (Group* parent, Duple position, ScrollSensitivity s)
32 : Group (parent, position)
33 , _scroll_sensitivity (s)
38 ScrollGroup::scroll_to (Duple const& d)
40 Duple base_pos (position().translate (_scroll_offset));
42 if (_scroll_sensitivity & ScrollsHorizontally) {
44 _scroll_offset.x = d.x;
47 if (_scroll_sensitivity & ScrollsVertically) {
49 _scroll_offset.y = d.y;
52 set_position (base_pos);
56 ScrollGroup::canvas_position() const
58 /* return the normal "base" position of this item
59 rather its position as affected by any scroll
62 return _position.translate (_scroll_offset);