canvas lollipops: object redesign and reimplementation
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@ -62,7 +62,7 @@ GhostRegion::GhostRegion (RegionView& rv,
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, base_rect (0)
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{
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group = new ArdourCanvas::Container (parent);
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CANVAS_DEBUG_NAME (group, "ghost region");
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CANVAS_DEBUG_NAME (group, "ghost region group");
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group->set_position (ArdourCanvas::Duple (initial_pos, 0));
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if (is_automation_ghost()) {
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@ -200,6 +200,8 @@ MidiGhostRegion::MidiGhostRegion(MidiRegionView& rv,
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if (base_rect) {
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base_rect->lower_to_bottom();
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}
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CANVAS_DEBUG_NAME (_note_group, "midi ghost note group");
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}
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MidiGhostRegion::~MidiGhostRegion()
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@ -59,18 +59,26 @@ VelocityGhostRegion::~VelocityGhostRegion ()
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void
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VelocityGhostRegion::update_contents_height ()
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{
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for (auto const & ev : events) {
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ArdourCanvas::Lollipop* l = dynamic_cast<ArdourCanvas::Lollipop*> (ev.second->item);
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l->set (ArdourCanvas::Duple (l->x(), base_rect->y1()), ev.second->event->note()->velocity() / 127.0 * base_rect->y1 (), lollipop_radius);
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for (auto const & i : events) {
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set_size_and_position (*i.second);
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}
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}
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bool
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VelocityGhostRegion::lollevent (GdkEvent* ev, MidiGhostRegion::GhostEvent* gev)
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{
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return trackview.editor().canvas_velocity_event (ev, gev->item);
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}
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void
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VelocityGhostRegion::add_note (NoteBase* n)
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{
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ArdourCanvas::Lollipop* l = new ArdourCanvas::Lollipop (_note_group);
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GhostEvent* event = new GhostEvent (n, _note_group, l);
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events.insert (std::make_pair (n->note(), event));
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l->Event.connect (sigc::bind (sigc::mem_fun (*this, &VelocityGhostRegion::lollevent), event));
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l->raise_to_top ();
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event->item->set_fill_color (UIConfiguration::instance().color_mod(n->base_color(), "ghost track midi fill"));
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event->item->set_outline_color (_outline);
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@ -81,21 +89,30 @@ VelocityGhostRegion::add_note (NoteBase* n)
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if (!n->item()->visible()) {
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l->hide();
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} else {
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l->set (ArdourCanvas::Duple (n->x0() - 1.0, base_rect->y1()), n->note()->velocity() / 127.0 * base_rect->y1(), lollipop_radius);
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set_size_and_position (*event);
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}
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}
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}
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void
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VelocityGhostRegion::update_note (GhostEvent* n)
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VelocityGhostRegion::set_size_and_position (GhostEvent& ev)
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{
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ArdourCanvas::Lollipop* l = dynamic_cast<ArdourCanvas::Lollipop*> (n->item);
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l->set (ArdourCanvas::Duple (n->event->x0() - 1.0, base_rect->y1()), n->event->note()->velocity() / 127.0 * base_rect->y1(), lollipop_radius);
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ArdourCanvas::Lollipop* l = dynamic_cast<ArdourCanvas::Lollipop*> (ev.item);
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const double available_height = base_rect->y1() - (2.0 * lollipop_radius);
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const double actual_height = (ev.event->note()->velocity() / 127.0) * available_height;
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l->set (ArdourCanvas::Duple (ev.event->x0() - 1.0, base_rect->y1() - actual_height), actual_height, lollipop_radius);
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}
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void
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VelocityGhostRegion::update_hit (GhostEvent* n)
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VelocityGhostRegion::update_note (GhostEvent* ev)
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{
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set_size_and_position (*ev);
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}
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void
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VelocityGhostRegion::update_hit (GhostEvent* ev)
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{
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set_size_and_position (*ev);
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}
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void
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@ -106,5 +123,5 @@ VelocityGhostRegion::remove_note (NoteBase*)
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void
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VelocityGhostRegion::set_colors ()
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{
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base_rect->set_fill_color (Gtkmm2ext::Color (0xff0000ff));
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base_rect->set_fill_color (Gtkmm2ext::Color (0xff000085));
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}
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@ -38,6 +38,8 @@ public:
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void set_colors ();
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private:
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bool lollevent (GdkEvent*, MidiGhostRegion::GhostEvent*);
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void set_size_and_position (MidiGhostRegion::GhostEvent&);
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};
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#endif /* __gtk_ardour_velocity_region_view_h__ */
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@ -44,19 +44,19 @@ public:
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Coord radius() const { return _radius; }
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void set_length (Coord);
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Coord length() const { return _points[1].y - _points[0].y; }
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Coord length() const { return _length; }
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/* Set origin, length, radius in one pass */
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void set (Duple const &, Coord, Coord);
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void set_x (Coord);
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Coord x () const { return _points[0].x; }
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Coord y0 () const { return _points[0].y; }
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Coord y1 () const { return _points[1].y; }
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Coord x () const { return _position.x; }
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Coord y0 () const { return _position.y; }
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Coord y1 () const { return _position.y + _length; }
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private:
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Duple _points[2];
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Coord _radius;
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Coord _length;
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};
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}
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@ -31,27 +31,22 @@ using namespace ArdourCanvas;
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Lollipop::Lollipop (Canvas* c)
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: Item (c)
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, _radius (8)
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, _length (0)
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{
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}
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Lollipop::Lollipop (Item* parent)
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: Item (parent)
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, _radius (8)
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, _length (0)
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{
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}
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void
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Lollipop::compute_bounding_box () const
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{
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Rect bbox;
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bbox.x0 = min (_points[0].x, _points[1].x);
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bbox.y0 = min (_points[0].y, _points[1].y);
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bbox.x1 = max (_points[0].x, _points[1].x) + _radius;
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bbox.y1 = max (_points[0].y, _points[1].y) + _radius;
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bbox = bbox.expand (0.5 + (_outline_width / 2));
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_bounding_box = bbox;
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_bounding_box = Rect (-_radius, -_radius, _radius, _length + _radius).expand (0.5 + (_outline_width / 2));
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set_bbox_clean ();
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}
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@ -60,26 +55,25 @@ Lollipop::render (Rect const & /*area*/, Cairo::RefPtr<Cairo::Context> context)
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{
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setup_outline_context (context);
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Duple p0 = item_to_window (Duple (_points[0].x, _points[0].y));
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Duple p1 = item_to_window (Duple (_points[1].x, _points[1].y));
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Duple p = _parent->item_to_window (Duple (_position.x, _position.y));
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if (_outline_width <= 1.0) {
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/* See Cairo FAQ on single pixel lines to understand why we add 0.5
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*/
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const Duple half_a_pixel (0.5, 0.5);
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p0 = p0.translate (half_a_pixel);
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p1 = p1.translate (half_a_pixel);
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p = p.translate (half_a_pixel);
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}
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context->move_to (p0.x, p0.y);
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/* Do not enter the circle */
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context->line_to (p1.x, p1.y + _radius);
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/* the line */
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context->move_to (p.x, p.y + _radius);
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context->line_to (p.x, p.y + _length - _radius);
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context->stroke ();
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/* the circle */
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context->arc (p1.x, p1.y, _radius, 0.0 * (M_PI/180.0), 360.0 * (M_PI/180.0));
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context->arc (p.x, p.y, _radius, 0.0 * (M_PI/180.0), 360.0 * (M_PI/180.0));
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if (fill()) {
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setup_fill_context (context);
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@ -110,12 +104,9 @@ Lollipop::set_radius (Coord r)
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void
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Lollipop::set_x (Coord x)
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{
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if (x != _points[0].x) {
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if (x != _position.x) {
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begin_change ();
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_points[0].x = x;
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_points[1].x = x;
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_position.x = x;
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set_bbox_dirty ();
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end_change ();
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}
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@ -124,10 +115,10 @@ Lollipop::set_x (Coord x)
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void
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Lollipop::set_length (Coord len)
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{
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if (_points[1].y != _points[0].y - len) {
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if (_length != len) {
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begin_change ();
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/* draw upwards */
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_points[1].y = _points[0].y - len;
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_length = len;
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set_bbox_dirty ();
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end_change ();
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}
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}
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@ -138,63 +129,25 @@ Lollipop::set (Duple const & d, Coord l, Coord r)
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begin_change ();
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_radius = r;
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_length = l;
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_points[0].x = d.x;
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_points[1].x = d.x;
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_points[0].y = d.y;
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/* Draw upwards */
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_points[1].y = _points[0].y - l;
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set_position (d);
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set_bbox_dirty ();
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end_change ();
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}
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bool
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Lollipop::covers (Duple const & point) const
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{
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const Duple p = window_to_item (point);
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const Duple p = _parent->window_to_item (point);
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static const Distance threshold = 2.0;
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/* this quick check works for vertical and horizontal lines, which are
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* common.
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*/
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/* only the circle is considered as "covering" */
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if (_points[0].x == _points[1].x) {
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/* line is vertical, just check x coordinate */
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if (fabs (_points[0].x - p.x) <= threshold) {
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return true;
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}
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} else if (_points[0].y == _points[1].y) {
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/* line is horizontal, just check y coordinate */
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if (fabs (_points[0].y - p.y) <= threshold) {
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return true;
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}
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}
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Duple at;
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double t;
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Duple a (_points[0]);
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Duple b (_points[1]);
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const Rect visible (window_to_item (_canvas->visible_area()));
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/*
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Clamp the line endpoints to the visible area of the canvas. If we do
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not do this, we have a line segment extending to COORD_MAX and our
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math goes wrong.
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*/
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a.x = min (a.x, visible.x1);
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a.y = min (a.y, visible.y1);
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b.x = min (b.x, visible.x1);
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b.y = min (b.y, visible.y1);
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double d = distance_to_segment_squared (p, a, b, t, at);
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if (t < 0.0 || t > 1.0) {
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return false;
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}
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if (d < threshold) {
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if (((fabs (_position.x - p.x)) <= (_radius + threshold)) &&
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((fabs (_position.y - p.y)) <= (_radius + threshold))) {
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/* inside circle */
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return true;
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}
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