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livetrax/gtk2_ardour/editor_cursors.cc
David Robillard b759fd5879 Put playhead on top of everything.
Achieve this by adding a new hscroll group just for cursors.

That requires a slightly smarter window_to_canvas() to deal with overlapping
sensitive scroll groups.  New rule is that scroll groups can overlap, but the
most sensitive one found from the top down will be chosen to translate
coordinates.  This basically means don't overlap scroll groups with different
sensitivities.

In the presence of scroll groups, having a canvas-wide window_to_canvas()
and/or canvas_to_window() fundamentally makes no sense.  At some point in the
glorious future we should kill those and use only item-relative coordinate
translation.
2015-01-16 19:13:56 -05:00

114 lines
2.9 KiB
C++

/*
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)
{
PositionChanged (frame);
double const new_pos = _editor.sample_to_pixel_unrounded (frame);
if (new_pos != _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);
}