2 Copyright (C) 2000 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.
24 #include <libgnomecanvas/libgnomecanvas.h>
30 using namespace ARDOUR;
33 Editor::Cursor::Cursor (Editor& ed, const string& color, bool (Editor::*callbck)(GdkEvent*))
34 : editor (ed), length(1.0)
36 /* "randomly" initialize coords */
38 points.push_back (Gnome::Art::Point (-9383839.0, 0.0));
39 points.push_back (Gnome::Art::Point (1.0, 0.0));
41 canvas_item = new Gnome::Canvas::Line (editor.cursor_group);
42 canvas_item->set_property ("points", points.gobj());
43 canvas_item->set_property ("fill_color", color.c_str());
44 canvas_item->set_property ("width_pixels", 1);
45 canvas_item->set_property ("first_arrowhead", (gboolean) TRUE);
46 canvas_item->set_property ("last_arrowhead", (gboolean) TRUE);
47 canvas_item->set_property ("arrow_shape_a", 11.0);
48 canvas_item->set_property ("arrow_shape_b", 0.0);
49 canvas_item->set_property ("arrow_shape_c", 9.0);
51 canvas_item->set_data ("cursor", this);
52 canvas_item->signal_event().connect (slot (ed, callback));
54 current_frame = 1; /* force redraw at 0 */
57 Editor::Cursor::~Cursor ()
60 gtk_object_destroy (GTK_OBJECT(canvas_item));
61 gnome_canvas_points_unref (points);
65 Editor::Cursor::set_position (jack_nframes_t frame)
67 double new_pos = editor.frame_to_unit (frame);
69 if (editor.session == 0) {
70 gnome_canvas_item_hide (canvas_item);
72 gnome_canvas_item_show (canvas_item);
75 current_frame = frame;
77 if (new_pos == points->coords[0]) {
79 /* change in position is not visible, so just raise it */
81 gnome_canvas_item_raise_to_top (canvas_item);
85 points->coords[0] = new_pos;
86 points->coords[2] = new_pos;
88 // cerr << "set cursor2 al points, nc = " << points->num_points << endl;
89 gnome_canvas_item_set (canvas_item, "points", points, NULL);
90 gnome_canvas_item_raise_to_top (canvas_item);
94 Editor::Cursor::set_length (double units)
97 points->coords[3] = points->coords[1] + length;
98 // cerr << "set cursor3 al points, nc = " << points->num_points << endl;
99 gnome_canvas_item_set (canvas_item, "points", points, NULL);
103 Editor::Cursor::set_y_axis (double position)
105 points->coords[1] = position;
106 points->coords[3] = position + length;
107 // cerr << "set cursor4 al points, nc = " << points->num_points << endl;
108 gnome_canvas_item_set (canvas_item, "points", points, NULL);