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 "canvas/scroll_group.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)
        , _track_canvas_item (new ArdourCanvas::Arrow (_editor.get_cursor_scroll_group()))
{
        CANVAS_DEBUG_NAME (_track_canvas_item, "track canvas editor cursor");

        _track_canvas_item->set_show_head (0, true);
        _track_canvas_item->set_head_height (0, 9);
        _track_canvas_item->set_head_width (0, 16);
        _track_canvas_item->set_head_outward (0, false);
        _track_canvas_item->set_show_head (1, false); // head only
        _track_canvas_item->set_data ("cursor", this);

        _track_canvas_item->Event.connect (sigc::bind (sigc::mem_fun (ed, callbck), _track_canvas_item));

        _track_canvas_item->set_y1 (ArdourCanvas::COORD_MAX);

        _track_canvas_item->set_x (0);
        
        _current_frame = 1; /* force redraw at 0 */
}

EditorCursor::EditorCursor (Editor& ed)
        : _editor (ed)
        , _track_canvas_item (new ArdourCanvas::Arrow (_editor.get_hscroll_group()))
{
        CANVAS_DEBUG_NAME (_track_canvas_item, "track canvas cursor");

        _track_canvas_item->set_show_head (0, false);
        _track_canvas_item->set_show_head (1, false);
        _track_canvas_item->set_y1 (ArdourCanvas::COORD_MAX);
        _track_canvas_item->set_ignore_events (true);
        
        _track_canvas_item->set_x (0);
    
        _current_frame = 1; /* force redraw at 0 */
}

EditorCursor::~EditorCursor ()
{
        delete _track_canvas_item;
}

void
EditorCursor::set_position (framepos_t frame)
{
        if (_current_frame != frame) { PositionChanged (frame); }

        double const new_pos = _editor.sample_to_pixel_unrounded (frame);

        if (rint(new_pos) != rint(_track_canvas_item->x ())) {
                _track_canvas_item->set_x (new_pos);
        }

        _current_frame = frame;
}

void
EditorCursor::show ()
{
        _track_canvas_item->show ();
}

void
EditorCursor::hide ()
{
        _track_canvas_item->hide ();
}

void
EditorCursor::set_color (ArdourCanvas::Color color)
{
        _track_canvas_item->set_color (color);
}

void
EditorCursor::set_sensitive (bool yn)
{
        _track_canvas_item->set_ignore_events (!yn);
}