David Robillard
b759fd5879
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.
114 lines
2.9 KiB
C++
114 lines
2.9 KiB
C++
/*
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Copyright (C) 2000 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <cstdlib>
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#include <cmath>
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#include "canvas/canvas.h"
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#include "canvas/debug.h"
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#include "canvas/scroll_group.h"
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#include "editor_cursors.h"
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#include "editor.h"
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using namespace ARDOUR;
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using namespace PBD;
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using namespace Gtk;
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EditorCursor::EditorCursor (Editor& ed, bool (Editor::*callbck)(GdkEvent*,ArdourCanvas::Item*))
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: _editor (ed)
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, _track_canvas_item (new ArdourCanvas::Arrow (_editor.get_cursor_scroll_group()))
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{
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CANVAS_DEBUG_NAME (_track_canvas_item, "track canvas editor cursor");
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_track_canvas_item->set_show_head (0, true);
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_track_canvas_item->set_head_height (0, 9);
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_track_canvas_item->set_head_width (0, 16);
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_track_canvas_item->set_head_outward (0, false);
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_track_canvas_item->set_show_head (1, false); // head only
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_track_canvas_item->set_data ("cursor", this);
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_track_canvas_item->Event.connect (sigc::bind (sigc::mem_fun (ed, callbck), _track_canvas_item));
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_track_canvas_item->set_y1 (ArdourCanvas::COORD_MAX);
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_track_canvas_item->set_x (0);
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_current_frame = 1; /* force redraw at 0 */
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}
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EditorCursor::EditorCursor (Editor& ed)
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: _editor (ed)
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, _track_canvas_item (new ArdourCanvas::Arrow (_editor.get_hscroll_group()))
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{
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CANVAS_DEBUG_NAME (_track_canvas_item, "track canvas cursor");
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_track_canvas_item->set_show_head (0, false);
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_track_canvas_item->set_show_head (1, false);
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_track_canvas_item->set_y1 (ArdourCanvas::COORD_MAX);
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_track_canvas_item->set_ignore_events (true);
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_track_canvas_item->set_x (0);
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_current_frame = 1; /* force redraw at 0 */
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}
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EditorCursor::~EditorCursor ()
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{
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delete _track_canvas_item;
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}
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void
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EditorCursor::set_position (framepos_t frame)
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{
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PositionChanged (frame);
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double const new_pos = _editor.sample_to_pixel_unrounded (frame);
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if (new_pos != _track_canvas_item->x ()) {
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_track_canvas_item->set_x (new_pos);
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}
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_current_frame = frame;
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}
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void
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EditorCursor::show ()
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{
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_track_canvas_item->show ();
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}
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void
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EditorCursor::hide ()
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{
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_track_canvas_item->hide ();
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}
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void
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EditorCursor::set_color (ArdourCanvas::Color color)
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{
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_track_canvas_item->set_color (color);
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}
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void
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EditorCursor::set_sensitive (bool yn)
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{
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_track_canvas_item->set_ignore_events (!yn);
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}
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