Initial import of gtk2_ardour.

git-svn-id: svn://localhost/trunk/ardour2@24 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 121 insertions, 0 deletions

diff --git a/gtk2_ardour/editor_cursors.cc b/gtk2_ardour/editor_cursors.cc
new file mode 100644
index 0000000000..0afbee4fdd
--- /dev/null
+++ b/gtk2_ardour/editor_cursors.cc
@@ -0,0 +1,121 @@
+/*
+    Copyright (C) 2000 Paul Davis 
+
+    This program 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 program 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 program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+    $Id$
+*/
+
+#include <cstdlib>
+#include <cmath>
+
+#include <gtk-canvas.h>
+
+#include "utils.h"
+#include "editor.h"
+
+using namespace SigC;
+using namespace ARDOUR;
+using namespace Gtk;
+
+Editor::Cursor::Cursor (Editor& ed, const string& color, GtkSignalFunc callbck)
+	: editor (ed), callback (callbck), length(1.0)
+{
+	GtkCanvasGroup *group;
+	points = gtk_canvas_points_new (2);
+	
+	/* "randomly" initialize coords */
+
+	points->coords[0] = -9383839.0;
+	points->coords[1] = 0.0;
+	points->coords[2] = 1.0;
+	points->coords[3] = 0.0;
+
+	group = GTK_CANVAS_GROUP (editor.cursor_group);
+
+	// cerr << "set cursor points, nc = " << points->num_points << endl;
+	canvas_item = gtk_canvas_item_new (group,
+					   gtk_canvas_line_get_type(),
+					   "points", points,
+					   "fill_color", color.c_str(),
+					   "width_pixels", 1,
+					   "first_arrowhead", (gboolean) TRUE,
+					   "last_arrowhead", (gboolean) TRUE,
+					   "arrow_shape_a", 11.0,
+					   "arrow_shape_b", 0.0,
+					   "arrow_shape_c", 9.0,
+					   NULL);
+
+	// cerr << "cursor line @ " << canvas_item << endl;
+
+	gtk_object_set_data (GTK_OBJECT(canvas_item), "cursor", this);
+	gtk_signal_connect (GTK_OBJECT(canvas_item), "event", callback, &editor);
+
+	current_frame = 1; /* force redraw at 0 */
+}
+
+Editor::Cursor::~Cursor ()
+
+{
+	gtk_object_destroy (GTK_OBJECT(canvas_item));
+	gtk_canvas_points_unref (points);
+}
+
+void
+Editor::Cursor::set_position (jack_nframes_t frame)
+{
+	double new_pos =  editor.frame_to_unit (frame);
+
+	if (editor.session == 0) {
+		gtk_canvas_item_hide (canvas_item);
+	} else {
+		gtk_canvas_item_show (canvas_item);
+	}
+
+	current_frame = frame;
+
+	if (new_pos == points->coords[0]) {
+
+		/* change in position is not visible, so just raise it */
+		
+		gtk_canvas_item_raise_to_top (canvas_item);
+		return;
+	} 
+
+	points->coords[0] = new_pos;
+	points->coords[2] = new_pos;
+
+	// cerr << "set cursor2 al points, nc = " << points->num_points << endl;
+	gtk_canvas_item_set (canvas_item, "points", points, NULL);
+	gtk_canvas_item_raise_to_top (canvas_item);
+}
+
+void
+Editor::Cursor::set_length (double units)
+{
+	length = units; 
+	points->coords[3] = points->coords[1] + length;
+	// cerr << "set cursor3 al points, nc = " << points->num_points << endl;
+	gtk_canvas_item_set (canvas_item, "points", points, NULL);
+}
+
+void 
+Editor::Cursor::set_y_axis (double position)
+{
+	points->coords[1] = position;
+	points->coords[3] = position + length;
+	// cerr << "set cursor4 al points, nc = " << points->num_points << endl;
+	gtk_canvas_item_set (canvas_item, "points", points, NULL);
+}