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livetrax/gtk2_ardour/editor_cursors.cc

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/*
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.
*/
#include <cstdlib>
#include <cmath>
#include "canvas/canvas.h"
#include "canvas/debug.h"
#include "utils.h"
#include "editor_cursors.h"
#include "editor.h"
using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;
EditorCursor::EditorCursor (Editor& ed, bool (Editor::*callbck)(GdkEvent*,ArdourCanvas::Item*))
: _editor (ed)
, _time_bars_canvas_item (_editor._time_bars_canvas->root ())
, _track_canvas_item (_editor._track_canvas->root ())
, _length (1.0)
{
CANVAS_DEBUG_NAME ((&_time_bars_canvas_item), "timebars editor cursor");
CANVAS_DEBUG_NAME ((&_track_canvas_item), "track canvas editor cursor");
_time_bars_canvas_item.set_show_head (0, true);
_time_bars_canvas_item.set_head_height (0, 9);
_time_bars_canvas_item.set_head_width (0, 16);
_time_bars_canvas_item.set_head_outward (0, false);
_time_bars_canvas_item.set_show_head (1, false); // head only
_time_bars_canvas_item.set_outline_width (0.5);
_time_bars_canvas_item.set_data ("cursor", this);
_track_canvas_item.set_data ("cursor", this);
_track_canvas_item.set_outline_width (0.5);
_time_bars_canvas_item.Event.connect (sigc::bind (sigc::mem_fun (ed, callbck), &_time_bars_canvas_item));
_track_canvas_item.Event.connect (sigc::bind (sigc::mem_fun (ed, callbck), &_track_canvas_item));
_time_bars_canvas_item.set_y1 (ArdourCanvas::COORD_MAX);
_track_canvas_item.set_y1 (ArdourCanvas::COORD_MAX);
_current_frame = 1; /* force redraw at 0 */
}
EditorCursor::~EditorCursor ()
{
}
void
EditorCursor::set_position (framepos_t frame)
{
PositionChanged (frame);
/* See Cairo FAQ question on single pixel lines to understand
why we add 0.5
*/
double const new_pos = _editor.sample_to_pixel (frame) + 0.5;
if (new_pos != _time_bars_canvas_item.x ()) {
_time_bars_canvas_item.set_x (new_pos);
}
if (new_pos != _track_canvas_item.x0 ()) {
_track_canvas_item.set_x (new_pos, new_pos);
}
_current_frame = frame;
}
void
EditorCursor::show ()
{
_time_bars_canvas_item.show ();
_track_canvas_item.show ();
}
void
EditorCursor::hide ()
{
_time_bars_canvas_item.hide ();
_track_canvas_item.hide ();
}
void
EditorCursor::set_color (ArdourCanvas::Color color)
{
_time_bars_canvas_item.set_color (color);
_track_canvas_item.set_outline_color (color);
}