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ardour/libs/surfaces/push2/cues.cc

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/*
* Copyright (C) 2016-2018 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2016-2018 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <cairomm/region.h>
#include <pangomm/layout.h>
#include "pbd/compose.h"
#include "pbd/convert.h"
#include "pbd/debug.h"
#include "pbd/failed_constructor.h"
#include "pbd/file_utils.h"
#include "pbd/search_path.h"
#include "pbd/enumwriter.h"
#include "midi++/parser.h"
#include "temporal/time.h"
#include "temporal/bbt_time.h"
#include "ardour/async_midi_port.h"
#include "ardour/audioengine.h"
#include "ardour/debug.h"
#include "ardour/dsp_filter.h"
#include "ardour/filesystem_paths.h"
#include "ardour/midiport_manager.h"
#include "ardour/midi_track.h"
#include "ardour/midi_port.h"
#include "ardour/monitor_control.h"
#include "ardour/meter.h"
#include "ardour/selection.h"
#include "ardour/send.h"
#include "ardour/session.h"
#include "ardour/solo_isolate_control.h"
#include "ardour/solo_safe_control.h"
#include "ardour/tempo.h"
#include "ardour/triggerbox.h"
#include "gtkmm2ext/gui_thread.h"
#include "gtkmm2ext/rgb_macros.h"
#include "canvas/arc.h"
#include "canvas/box.h"
#include "canvas/line.h"
#include "canvas/meter.h"
#include "canvas/rectangle.h"
#include "canvas/text.h"
#include "canvas/types.h"
#include "canvas.h"
#include "cues.h"
#include "knob.h"
#include "follow_action.h"
#include "level_meter.h"
#include "push2.h"
#include "utils.h"
#include "pbd/i18n.h"
using namespace ARDOUR;
using namespace PBD;
using namespace Glib;
using namespace ArdourSurface;
using namespace ArdourCanvas;
using namespace Gtkmm2ext;
CueLayout::CueLayout (Push2& p, Session & s, std::string const & name)
: Push2Layout (p, s, name)
, track_base (0)
, scene_base (0)
, _knob_function (KnobGain)
, _long_stop (0)
{
Pango::FontDescription fd ("Sans 10");
_bg = new ArdourCanvas::Rectangle (this);
_bg->set (ArdourCanvas::Rect (0, 0, display_width(), display_height()));
_bg->set_fill_color (_p2.get_color (Push2::DarkBackground));
_upper_line = new Line (this);
_upper_line->set (Duple (0, 22.5), Duple (display_width(), 22.5));
_upper_line->set_outline_color (_p2.get_color (Push2::LightBackground));
for (int n = 0; n < 8; ++n) {
Text* t;
/* background for text labels for knob function */
ArdourCanvas::Rectangle* r = new ArdourCanvas::Rectangle (this);
Coord x0 = 10 + (n*Push2Canvas::inter_button_spacing()) - 5;
r->set (ArdourCanvas::Rect (x0, 2, x0 + Push2Canvas::inter_button_spacing(), 2 + 21));
_upper_backgrounds.push_back (r);
t = new Text (this);
t->set_font_description (fd);
t->set_color (_p2.get_color (Push2::ParameterName));
t->set_position ( Duple (10 + (n*Push2Canvas::inter_button_spacing()), 2));
_upper_text.push_back (t);
switch (n) {
case 0: t->set (_("Gain")); break;
case 1: t->set (_("Pan")); break;
case 2: t->set (_("Send A")); break;
case 3: t->set (_("Send B")); break;
default:
break;
}
t = new Text (this);
t->set_font_description (fd);
t->set_color (_p2.get_color (Push2::ParameterName));
t->set_position (Duple (10 + (n*Push2Canvas::inter_button_spacing()), 140));
_lower_text.push_back (t);
_progress[n] = new ArdourCanvas::Arc (this);
_progress[n]->set_position (Duple (45 + (Push2Canvas::inter_button_spacing()*n), 80));
_progress[n]->set_radius (25.);
_progress[n]->set_start (-90.); /* 0 is "east" */
_progress[n]->set_fill_color (_p2.get_color (Push2::KnobForeground));
_progress[n]->set_fill (false);
_progress[n]->set_outline_color (_p2.get_color (Push2::KnobArcBackground));
_progress[n]->set_outline_width (10.);
_progress[n]->set_outline (true);
follow_action_icon[n] = new FollowActionIcon (this);
follow_action_icon[n]->set_font_description (fd);
follow_action_icon[n]->set_size (25.);
follow_action_icon[n]->set_fill_color (_p2.get_color (Push2::KnobArcBackground));
follow_action_icon[n]->set_position (Duple (31 + (Push2Canvas::inter_button_spacing() * n), 67));
t = new Text (this);
t->set_font_description (fd);
t->set_color (_p2.get_color (Push2::ParameterName));
t->set_position ( Duple (10 + (n*Push2Canvas::inter_button_spacing()), 115));
_clip_label_text.push_back (t);
}
_session.RouteAdded.connect (_session_connections, invalidator(*this), boost::bind (&CueLayout::viewport_changed, this), &_p2);
}
CueLayout::~CueLayout ()
{
}
void
CueLayout::show ()
{
Push2Layout::show ();
Push2::ButtonID lower_buttons[] = {
Push2::Lower1, Push2::Lower2, Push2::Lower3, Push2::Lower4,
Push2::Lower5, Push2::Lower6, Push2::Lower7, Push2::Lower8
};
for (auto & lb : lower_buttons) {
boost::shared_ptr<Push2::Button> b = _p2.button_by_id (lb);
b->set_color (Push2::LED::DarkGray);
b->set_state (Push2::LED::OneShot24th);
_p2.write (b->state_msg());
}
Push2::ButtonID scene_buttons[] = {
Push2::Fwd32ndT, Push2::Fwd32nd, Push2::Fwd16th, Push2::Fwd16thT,
Push2::Fwd8thT, Push2::Fwd8th, Push2::Fwd4trT, Push2::Fwd4tr
};
for (auto & sb : scene_buttons) {
boost::shared_ptr<Push2::Button> b = _p2.button_by_id (sb);
b->set_color (Push2::LED::Green);
b->set_state (Push2::LED::NoTransition);
_p2.write (b->state_msg());
}
viewport_changed ();
show_knob_function ();
}
void
CueLayout::hide ()
{
Push2Layout::hide ();
Push2::ButtonID scene_buttons[] = {
Push2::Fwd32ndT, Push2::Fwd32nd, Push2::Fwd16th, Push2::Fwd16thT,
Push2::Fwd8thT, Push2::Fwd8th, Push2::Fwd4trT, Push2::Fwd4tr
};
for (auto & sb : scene_buttons) {
boost::shared_ptr<Push2::Button> b = _p2.button_by_id (sb);
b->set_color (Push2::LED::Black);
b->set_state (Push2::LED::NoTransition);
_p2.write (b->state_msg());
}
}
void
CueLayout::render (ArdourCanvas::Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
{
Container::render (area, context);
}
void
CueLayout::button_upper (uint32_t n)
{
switch (n) {
case 0:
_knob_function = KnobGain;
break;
case 1:
_knob_function = KnobPan;
break;
case 2:
_knob_function = KnobSendA;
break;
case 3:
_knob_function = KnobSendB;
break;
default:
return;
}
show_knob_function ();
viewport_changed ();
}
void
CueLayout::show_knob_function ()
{
for (int s = 0; s < 8; ++s) {
_upper_backgrounds[s]->hide ();
_upper_text[s]->set_color (_p2.get_color (Push2::ParameterName));
}
int n = 0;
switch (_knob_function) {
case KnobGain:
break;
case KnobPan:
n = 1;
break;
case KnobSendA:
n = 2;
break;
case KnobSendB:
n = 3;
break;
default:
return;
}
_upper_backgrounds[n]->set_fill_color (_p2.get_color (Push2::ParameterName));
_upper_backgrounds[n]->set_outline_color (_p2.get_color (Push2::ParameterName));
_upper_backgrounds[n]->show ();
_upper_text[n]->set_color (Gtkmm2ext::contrasting_text_color (_p2.get_color (Push2::ParameterName)));
}
void
CueLayout::button_lower (uint32_t n)
{
if (_p2.stop_down() || _long_stop) {
_p2.unbang (n + track_base);
} else {
/* select track */
boost::shared_ptr<Route> r = _session.get_remote_nth_route (n);
if (r) {
_session.selection().set (r, boost::shared_ptr<AutomationControl>());
}
}
}
void
CueLayout::button_left ()
{
if (track_base > 0) {
track_base--;
viewport_changed ();
}
}
void
CueLayout::button_page_left ()
{
if (track_base > 8) {
track_base -= 8; /* XXX get back to zero when appropriate */
viewport_changed ();
}
}
void
CueLayout::button_right ()
{
track_base++;
viewport_changed ();
}
void
CueLayout::button_page_right ()
{
track_base += 8; /* XXX limit to number of tracks */
viewport_changed ();
}
void
CueLayout::button_up ()
{
if (scene_base > 0) {
scene_base--;
viewport_changed ();
}
}
void
CueLayout::button_octave_up ()
{
if (scene_base > 8) {
scene_base -= 8;
viewport_changed ();
}
}
void
CueLayout::button_down ()
{
scene_base++;
viewport_changed ();
}
void
CueLayout::button_octave_down ()
{
scene_base++;
}
void
CueLayout::viewport_changed ()
{
_route_connections.drop_connections ();
for (int n = 0; n < 64; ++n) {
_trig_connections[n].disconnect ();
}
for (int n = 0; n < 8; ++n) {
_route[n] = _session.get_remote_nth_route (track_base+n);
follow_action_icon[n]->reset_trigger ();
boost::shared_ptr<Route> r = _route[n];
boost::shared_ptr<Push2::Button> lower_button = _p2.lower_button_by_column (n);
if (r) {
_route[n]->DropReferences.connect (_route_connections, invalidator (*this), boost::bind (&CueLayout::viewport_changed, this), &_p2);
_route[n]->presentation_info().PropertyChanged.connect (_route_connections, invalidator (*this), boost::bind (&CueLayout::route_property_change, this, _1, n), &_p2);
std::string shortname = short_version (r->name(), 10);
_lower_text[n]->set (shortname);
boost::shared_ptr<Processor> s;
switch (_knob_function) {
case KnobGain:
_controllables[n] = r->gain_control();
break;
case KnobPan:
_controllables[n] = r->pan_azimuth_control ();
break;
case KnobSendA:
s = r->nth_send (0);
if (s) {
boost::shared_ptr<Send> ss = boost::dynamic_pointer_cast<Send> (s);
if (ss) {
_controllables[n] = ss->gain_control();
} else {
_controllables[n] = boost::shared_ptr<AutomationControl> ();
}
}
break;
case KnobSendB:
s = r->nth_send (1);
if (s) {
boost::shared_ptr<Send> ss = boost::dynamic_pointer_cast<Send> (s);
if (ss) {
_controllables[n] = ss->gain_control();
} else {
_controllables[n] = boost::shared_ptr<AutomationControl> ();
}
}
break;
default:
_controllables[n] = boost::shared_ptr<AutomationControl> ();
}
uint8_t color = _p2.get_color_index (r->presentation_info().color());
lower_button->set_color (color);
lower_button->set_state (Push2::LED::OneShot24th);
_p2.write (lower_button->state_msg());
boost::shared_ptr<TriggerBox> tb = r->triggerbox ();
if (tb) {
tb->PropertyChanged.connect (_route_connections, invalidator (*this), boost::bind (&CueLayout::triggerbox_property_change, this, _1, n), &_p2);
}
for (int y = 0; y < 8; ++y) {
boost::shared_ptr<Push2::Pad> pad = _p2.pad_by_xy (n, y);
if (tb && tb->active()) {
TriggerPtr tp = tb->trigger (y);
if (tp && tp->region()) {
/* trigger in slot */
pad->set_color (color);
tp->PropertyChanged.connect (_trig_connections[n * 8 + y], invalidator (*this), boost::bind (&CueLayout::trigger_property_change, this, _1, n, y), &_p2);
} else {
/* no trigger */
pad->set_color (Push2::LED::Black);
}
} else {
/* no active triggerbox */
pad->set_color (Push2::LED::Black);
}
pad->set_state (Push2::LED::OneShot24th);
_p2.write (pad->state_msg());
}
} else {
_lower_text[n]->set (std::string());
lower_button->set_color (Push2::LED::Black);
_controllables[n] = boost::shared_ptr<AutomationControl> ();
/* turn this column off */
for (int y = 0; y < 8; ++y) {
boost::shared_ptr<Push2::Pad> pad = _p2.pad_by_xy (n, y);
pad->set_color (Push2::LED::Black);
pad->set_state (Push2::LED::OneShot24th);
_p2.write (pad->state_msg());
}
}
}
}
void
CueLayout::strip_vpot (int n, int delta)
{
boost::shared_ptr<Controllable> ac = _controllables[n];
if (ac) {
ac->set_value (ac->get_value() + ((2.0/64.0) * delta), PBD::Controllable::UseGroup);
}
}
void
CueLayout::strip_vpot_touch (int n, bool touching)
{
}
void
CueLayout::button_rhs (int row)
{
_p2.get_session().trigger_cue_row (row + scene_base);
}
void
CueLayout::button_stop_press ()
{
if (_p2.modifier_state() == Push2::ModShift) {
_p2.get_session().stop_all_triggers (false); /* quantized global stop */
}
}
void
CueLayout::button_stop_release ()
{
if (_long_stop) {
_long_stop = 0;
show_running_boxen (false);
}
}
void
CueLayout::button_stop_long_press ()
{
_long_stop++;
if (_long_stop == 1) {
show_running_boxen (true);
}
}
void
CueLayout::show_running_boxen (bool yn)
{
Push2::ButtonID lower_buttons[] = {
Push2::Lower1, Push2::Lower2, Push2::Lower3, Push2::Lower4,
Push2::Lower5, Push2::Lower6, Push2::Lower7, Push2::Lower8
};
for (int n = 0; n < 8; ++n) {
boost::shared_ptr<Push2::Button> lower_button = _p2.button_by_id (lower_buttons[n]);
if (!_route[n]) {
continue;
}
boost::shared_ptr<TriggerBox> tb = _route[n]->triggerbox();
if (!tb) {
continue;
}
if (yn) {
if (!tb->currently_playing()) {
/* nothing playing, do not turn the blink on */
continue;
}
HSV hsv (_route[n]->presentation_info().color());
hsv = hsv.shade (2.0);
lower_button->set_color (_p2.get_color_index (hsv.color()));
lower_button->set_state (Push2::LED::Blinking4th);
} else {
lower_button->set_color (_p2.get_color_index (_route[n]->presentation_info().color()));
lower_button->set_state (Push2::LED::NoTransition);
}
_p2.write (lower_button->state_msg());
}
boost::shared_ptr<Push2::Button> stop = _p2.button_by_id (Push2::Stop);
assert (stop);
if (yn) {
stop->set_color (Push2::LED::Red);
stop->set_state (Push2::LED::Blinking4th);
} else {
stop->set_color (Push2::LED::White);
stop->set_state (Push2::LED::NoTransition);
}
_p2.write (stop->state_msg());
}
void
CueLayout::pad_press (int y, int x) /* fix coordinate order one day */
{
if (!_route[x]) {
return;
}
boost::shared_ptr<TriggerBox> tb = _route[x]->triggerbox();
if (!tb) {
/* unpossible! */
return;
}
if (!tb->trigger (y + scene_base)->region()) {
_p2.unbang (x + track_base);
return;
}
_p2.bang (x + track_base, y + scene_base);
}
void
CueLayout::update_meters ()
{
for (int n = 0; n < 8; ++n) {
update_clip_progress (n);
}
}
void
CueLayout::update_clip_progress (int n)
{
boost::shared_ptr<Route> r = _p2.get_session().get_remote_nth_route (n + track_base);
if (!r) {
_progress[n]->set_arc (0.0 - 90.0);
return;
}
boost::shared_ptr<TriggerBox> tb = r->triggerbox();
if (!tb || !tb->active()) {
_progress[n]->set_arc (0.0 - 90.0);
_clip_label_text[n]->set (std::string());
return;
}
double fract = tb->position_as_fraction ();
if (fract < 0.0) {
_progress[n]->set_arc (0.0 - 90.0); /* 0 degrees is "east" */
} else {
_progress[n]->set_arc ((fract * 360.0) - 90.0); /* 0 degrees is "east" */
}
TriggerPtr tp = tb->currently_playing();
if (tp) {
std::string shortname = short_version (tp->name(), 10);
_clip_label_text[n]->set (shortname);
} else {
_clip_label_text[n]->set (std::string());
}
}
void
CueLayout::route_property_change (PropertyChange const& what_changed, uint32_t which)
{
if (what_changed.contains (Properties::color)) {
// _lower_backgrounds[which]->set_fill_color (_stripable[which]->presentation_info().color());
if (_route[which]->is_selected()) {
_lower_text[which]->set_fill_color (contrasting_text_color (_route[which]->presentation_info().color()));
/* might not be a MIDI track, in which case this will
do nothing
*/
_p2.update_selection_color ();
}
}
if (what_changed.contains (Properties::hidden)) {
viewport_changed ();
}
if (what_changed.contains (Properties::selected)) {
if (!_route[which]) {
return;
}
if (_route[which]->is_selected()) {
// show_selection (which);
} else {
// hide_selection (which);
}
}
}
void
CueLayout::trigger_property_change (PropertyChange const& what_changed, uint32_t col, uint32_t row)
{
assert (_route[col]);
if (!visible()) {
return;
}
TriggerPtr trig;
if (what_changed.contains (Properties::running)) {
boost::shared_ptr<TriggerBox> tb = _route[col]->triggerbox ();
assert (tb);
trig = tb->trigger (row);
assert (trig);
boost::shared_ptr<Push2::Pad> pad = _p2.pad_by_xy (col, row);
assert (pad);
set_pad_color_from_trigger_state (col, pad, trig);
_p2.write (pad->state_msg());
}
PropertyChange follow_stuff;
follow_stuff.add (Properties::follow_action0);
follow_stuff.add (Properties::follow_action1);
follow_stuff.add (Properties::follow_action_probability);
if (what_changed.contains (follow_stuff)) {
if (trig && trig->active()) {
follow_action_icon[col]->redraw ();
}
}
}
void
CueLayout::triggerbox_property_change (PropertyChange const& what_changed, uint32_t col)
{
assert (_route[col]);
if (!visible()) {
return;
}
if (what_changed.contains (Properties::currently_playing) || what_changed.contains (Properties::queued)) {
boost::shared_ptr<TriggerBox> tb = _route[col]->triggerbox ();
assert (tb);
/* make sure the blink state of all 8 pads for this
* route/triggerbox are correct
*/
for (uint32_t y = 0; y < 8; ++y) {
boost::shared_ptr<Push2::Pad> pad = _p2.pad_by_xy (col, y);
assert (pad);
TriggerPtr trig = tb->trigger (y);
assert (trig);
set_pad_color_from_trigger_state (col, pad, trig);
_p2.write (pad->state_msg());
}
TriggerPtr playing = tb->currently_playing();
if (what_changed.contains (Properties::currently_playing)) {
if (playing) {
follow_action_icon[col]->show ();
follow_action_icon[col]->set_trigger (playing);
} else {
follow_action_icon[col]->hide ();
follow_action_icon[col]->reset_trigger ();
}
}
if (!what_changed.contains (Properties::queued)) {
/* currently_playing changed, if nothing is playing be
* sure to disable blink on lower button
*/
if (!playing) {
boost::shared_ptr<Push2::Button> lower_button = _p2.lower_button_by_column (col);
lower_button->set_color (_p2.get_color_index (_route[col]->presentation_info().color()));
lower_button->set_state (Push2::LED::NoTransition);
_p2.write (lower_button->state_msg());
}
}
}
}
void
CueLayout::set_pad_color_from_trigger_state (int col, boost::shared_ptr<Push2::Pad> pad, TriggerPtr trig)
{
if (!visible()) {
return;
}
if (trig->region()) {
if (trig->active()) {
/* running or waiting to stop */
HSV hsv (_route[col]->presentation_info().color());
hsv = hsv.shade (2.0);
pad->set_color (_p2.get_color_index (hsv.color ()));
pad->set_state (Push2::LED::Pulsing4th);
} else if (trig == trig->box().peek_next_trigger()) {
/* waiting to start */
HSV hsv (_route[col]->presentation_info().color());
hsv = hsv.shade (2.0);
pad->set_color (_p2.get_color_index (hsv.color ()));
pad->set_state (Push2::LED::Pulsing8th);
} else {
/* not running */
pad->set_color (_p2.get_color_index (_route[col]->presentation_info().color()));
pad->set_state (Push2::LED::NoTransition);
}
} else {
/* empty slot */
pad->set_color (Push2::LED::Black);
pad->set_state (Push2::LED::NoTransition);
}
}
namespace ArdourCanvas {
FollowActionIcon::FollowActionIcon (Canvas* c)
: Rectangle (c)
, size (0)
, scale (1.)
{
set_fill (false);
set_outline (false);
}
FollowActionIcon::FollowActionIcon (Item* i)
: Rectangle (i)
, size (0)
, scale (1.)
{
set_fill (false);
set_outline (false);
}
void
FollowActionIcon::set_trigger (boost::shared_ptr<Trigger> t)
{
begin_change ();
trigger = t;
set_bbox_dirty ();
end_change ();
}
void
FollowActionIcon::reset_trigger ()
{
begin_change ();
trigger.reset ();
set_bbox_dirty ();
end_change ();
}
void
FollowActionIcon::compute_bounding_box () const
{
/* a little crude, since we don't actually know how big the "?" might
be if we use it to denote a random action.
*/
_bounding_box = _rect;
set_bbox_clean ();
}
void
FollowActionIcon::set_size (double sz)
{
begin_change ();
size = sz;
set (ArdourCanvas::Rect (0., 0., size * scale, size * scale));
set_bbox_dirty ();
end_change ();
}
void
FollowActionIcon::set_scale (double sc)
{
begin_change ();
scale = sc;
set (ArdourCanvas::Rect (0., 0., size * scale, size * scale));
set_bbox_dirty ();
end_change ();
}
void
FollowActionIcon::set_font_description (Pango::FontDescription const & fd)
{
begin_change ();
font_description = fd;
set_bbox_dirty ();
end_change ();
}
void
FollowActionIcon::render (ArdourCanvas::Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
{
if (!trigger) {
return;
}
ArdourCanvas::Rect self (item_to_window (_rect));
const ArdourCanvas::Rect draw = self.intersection (area);
if (!draw) {
return;
}
context->save ();
context->translate (self.x0, self.y0);
/* in the case where there is a random follow-action, just put a "?" */
if (trigger->follow_action_probability () > 0) {
Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create (context);
layout->set_font_description (font_description);
layout->set_text ("?");
int tw, th;
layout->get_pixel_size (tw, th);
context->move_to (size / 2, size / 2);
context->rel_move_to (-tw / 2, -th / 2);
layout->show_in_cairo_context (context);
context->begin_new_path ();
context->restore ();
return;
}
Gtkmm2ext::set_source_rgba (context, _fill_color);
context->set_line_width (1 * scale);
switch (trigger->follow_action0().type) {
case FollowAction::Stop:
context->rectangle (6 * scale, 6 * scale, size - 12 * scale, size - 12 * scale);
context->stroke ();
break;
case FollowAction::Again:
context->arc (size / 2, size / 2, size * 0.20, 60. * (M_PI / 180.0), 2 * M_PI);
context->stroke ();
context->arc (size / 2 + size * 0.2, size / 2, 1.5 * scale, 0, 2 * M_PI); // arrow head
context->fill ();
break;
case FollowAction::ForwardTrigger:
context->move_to (size / 2, 3 * scale);
context->line_to (size / 2, size - 5 * scale);
context->stroke ();
context->arc (size / 2, size - 5 * scale, 2 * scale, 0, 2 * M_PI); // arrow head
context->fill ();
break;
case FollowAction::ReverseTrigger:
context->move_to (size / 2, 5 * scale);
context->line_to (size / 2, size - 3 * scale);
context->stroke ();
context->arc (size / 2, 5 * scale, 2 * scale, 0, 2 * M_PI); // arrow head
context->fill ();
break;
case FollowAction::JumpTrigger:
if (trigger->follow_action0().targets.count() == 1 ) { //Jump to a specific row; just draw the letter of the row we are jumping to
int cue_idx = -1;
for (int i = 0; i < default_triggers_per_box; i++) {
if (trigger->follow_action0().targets.test(i)) {
cue_idx = i;
break;
}
}
assert (cue_idx >= 0);
Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create (context);
layout->set_font_description (font_description);
layout->set_text (cue_marker_name (cue_idx));
int tw, th;
layout->get_pixel_size (tw, th);
context->move_to ((size / 2) - (tw/2), (size / 2) - (th/2));
layout->show_in_cairo_context (context);
/* the above call does not clear the path and neither
* does ::restore()
*/
context->begin_new_path ();
} else { // 'OTHER' jump
context->set_line_width (1.5 * scale);
Gtkmm2ext::set_source_rgba (context, HSV (_fill_color).lighter (0.25).color ()); // needs to be brighter to maintain balance
for (int i = 0; i < 6; i++) {
Cairo::Matrix m = context->get_matrix ();
context->translate (size / 2, size / 2);
context->rotate (i * M_PI / 3);
context->move_to (0, 2 * scale);
context->line_to (0, (size / 2) - 4 * scale);
context->stroke ();
context->set_matrix (m);
}
}
break;
case FollowAction::None:
default:
break;
}
context->restore ();
}
} /* namespace */
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