only the last step-edited note remains selected after each note addition; waf install...
[ardour.git] / gtk2_ardour / diamond.cc
1 /*
2     Copyright (C) 2007 Paul Davis
3     Author: Dave Robillard
4
5     This program is free software; you can redistribute it and/or modify
6     it under the terms of the GNU General Public License as published by
7     the Free Software Foundation; either version 2 of the License, or
8     (at your option) any later version.
9
10     This program is distributed in the hope that it will be useful,
11     but WITHOUT ANY WARRANTY; without even the implied warranty of
12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13     GNU General Public License for more details.
14
15     You should have received a copy of the GNU General Public License
16     along with this program; if not, write to the Free Software
17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20 #include "diamond.h"
21
22 using namespace Gnome::Canvas;
23 using namespace Gnome::Art;
24
25 Diamond::Diamond(Group& group, double height)
26         : Polygon(group)
27         , _x (0)
28         , _y (0)
29         , _h (height)
30 {
31         points = gnome_canvas_points_new (4);
32         g_object_set (gobj(), "points", points, NULL);
33         move_to (0, 0);
34 }
35
36 Diamond::~Diamond ()
37 {
38         gnome_canvas_points_free (points);
39 }
40
41 void
42 Diamond::set_height (double height)
43 {
44         _h = height;
45         move_to (_x, _y);
46 }
47
48 void
49 Diamond::move_to (double x, double y)
50 {
51         _x = x;
52         _y = y;
53
54         points->coords[0] = _x;
55         points->coords[1] = _y + (_h * 2.0);
56
57         points->coords[2] = _x + _h;
58         points->coords[3] = _y + _h;
59
60         points->coords[4] = _x;
61         points->coords[5] = _y;
62
63         points->coords[6] = _x - _h;
64         points->coords[7] = _y + _h;
65
66         g_object_set (gobj(), "points", points, NULL);
67 }
68
69 void
70 Diamond::move_by (double dx, double dy)
71 {
72         points->coords[0] += dx;
73         points->coords[1] += dy;
74
75         points->coords[2] += dx;
76         points->coords[3] += dy;
77
78         points->coords[4] += dx;
79         points->coords[5] += dy;
80
81         points->coords[6] += dx;
82         points->coords[7] += dy;
83
84         g_object_set (gobj(), "points", points, NULL);
85 }