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8b389ee829
NoteBase-derived note objects must delete their children, because often they are deleted long before the parent (group) is. However, in MidiView::clear_events() we used to call _note_group->clear (true) first, which would delete the canvas items owned by these objects, without them knowing about it. This made it dangerous for them to delete those same items in their destructors. This reverses the ordering so that NoteBase objects are deleted first (along with their canvas items) and after that we clear _note_group which will address any danging canvas items created there that are not owned by a NoteBase-derived object
154 lines
3 KiB
C++
154 lines
3 KiB
C++
/*
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* Copyright (C) 2013-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2014 David Robillard <d@drobilla.net>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "temporal/beats.h"
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#include "evoral/Note.h"
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#include "canvas/polygon.h"
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#include "canvas/debug.h"
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#include "hit.h"
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using namespace ARDOUR;
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using namespace ArdourCanvas;
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Hit::Hit (MidiView& region, Item* parent, double size, const std::shared_ptr<NoteType> note, bool with_events)
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: NoteBase (region, with_events, note)
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{
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_polygon = new ArdourCanvas::Polygon (parent);
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CANVAS_DEBUG_NAME (_polygon, "note");
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set_item (_polygon);
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set_height (size);
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}
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Hit::~Hit ()
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{
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delete _polygon;
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}
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void
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Hit::move_event (double dx, double dy)
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{
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Points points = _polygon->get();
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Points moved;
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for (Points::iterator p = points.begin(); p != points.end(); ++p) {
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moved.push_back ((*p).translate (ArdourCanvas::Duple (dx, dy)));
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}
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_polygon->set (moved);
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}
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void
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Hit::set_outline_color (uint32_t color)
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{
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_polygon->set_outline_color (color);
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}
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void
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Hit::set_fill_color (uint32_t color)
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{
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_polygon->set_fill_color (color);
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}
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void
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Hit::show ()
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{
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_polygon->show ();
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}
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void
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Hit::hide ()
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{
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_polygon->hide ();
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}
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Points
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Hit::points(Distance height)
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{
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/* draw a diamond */
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Points p;
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const double half_height = height/2.0;
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p.push_back (Duple (-half_height, 0)); // left, middle
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p.push_back (Duple (0, -half_height)); // top
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p.push_back (Duple (+half_height, 0)); // right, middle
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p.push_back (Duple (0, +half_height)); // bottom
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return p;
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}
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void
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Hit::set_height (Distance height)
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{
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_polygon->set (points(height));
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}
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Duple
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Hit::position ()
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{
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return _polygon->position ();
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}
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void
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Hit::set_position (Duple position)
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{
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_polygon->set_position (position);
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}
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Coord
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Hit::x0 () const
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{
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/* left vertex */
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return _polygon->position().x + _polygon->get()[0].x;
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}
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Coord
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Hit::x1 () const
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{
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/* right vertex */
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return _polygon->position().x + _polygon->get()[2].x;
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}
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Coord
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Hit::y0 () const
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{
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/* top vertex */
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return _polygon->position().y + _polygon->get()[1].y;
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}
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Coord
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Hit::y1 () const
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{
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/* bottom vertex */
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return _polygon->position().y + _polygon->get()[3].y;
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}
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void
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Hit::set_ignore_events (bool ignore)
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{
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_polygon->set_ignore_events (ignore);
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}
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double
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Hit::visual_velocity() const
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{
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/* We don't display velocity in any explicit way */
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return 0.0;
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}
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