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livetrax/gtk2_ardour/ghostregion.cc

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/*
Copyright (C) 2000-2007 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 "evoral/Note.hpp"
#include "canvas/container.h"
#include "canvas/rectangle.h"
#include "canvas/wave_view.h"
#include "canvas/debug.h"
#include "ardour_ui.h"
#include "automation_time_axis.h"
#include "ghostregion.h"
#include "midi_streamview.h"
#include "midi_time_axis.h"
#include "rgb_macros.h"
#include "note.h"
using namespace std;
using namespace Editing;
using namespace ArdourCanvas;
using namespace ARDOUR;
PBD::Signal1<void,GhostRegion*> GhostRegion::CatchDeletion;
GhostRegion::GhostRegion (ArdourCanvas::Container* parent, TimeAxisView& tv, TimeAxisView& source_tv, double initial_pos)
: trackview (tv)
, source_trackview (source_tv)
{
group = new ArdourCanvas::Container (parent);
CANVAS_DEBUG_NAME (group, "ghost region");
group->set_position (ArdourCanvas::Duple (initial_pos, 0));
base_rect = new ArdourCanvas::TimeRectangle (group);
CANVAS_DEBUG_NAME (base_rect, "ghost region rect");
base_rect->set_x0 (0);
base_rect->set_y0 (1.0);
base_rect->set_y1 (trackview.current_height());
base_rect->set_outline (false);
if (!is_automation_ghost()) {
base_rect->hide();
}
GhostRegion::set_colors();
/* the parent group of a ghostregion is a dedicated group for ghosts,
so the new ghost would want to get to the top of that group*/
group->raise_to_top ();
}
GhostRegion::~GhostRegion ()
{
CatchDeletion (this);
delete base_rect;
delete group;
}
void
GhostRegion::set_duration (double units)
{
base_rect->set_x1 (units);
}
void
GhostRegion::set_height ()
{
base_rect->set_y1 (trackview.current_height());
}
void
GhostRegion::set_colors ()
{
if (is_automation_ghost()) {
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base_rect->set_fill_color (ARDOUR_UI::config()->color_mod ("ghost track base", "ghost track base"));
}
}
guint
GhostRegion::source_track_color(unsigned char alpha)
{
Gdk::Color color = source_trackview.color();
return RGBA_TO_UINT (color.get_red() / 256, color.get_green() / 256, color.get_blue() / 256, alpha);
}
bool
GhostRegion::is_automation_ghost()
{
return (dynamic_cast<AutomationTimeAxisView*>(&trackview)) != 0;
}
AudioGhostRegion::AudioGhostRegion(TimeAxisView& tv, TimeAxisView& source_tv, double initial_unit_pos)
: GhostRegion(tv.ghost_group(), tv, source_tv, initial_unit_pos)
{
}
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void
AudioGhostRegion::set_samples_per_pixel (double fpp)
{
for (vector<WaveView*>::iterator i = waves.begin(); i != waves.end(); ++i) {
(*i)->set_samples_per_pixel (fpp);
}
}
void
AudioGhostRegion::set_height ()
{
vector<WaveView*>::iterator i;
uint32_t n;
GhostRegion::set_height();
double const ht = ((trackview.current_height()) / (double) waves.size());
for (n = 0, i = waves.begin(); i != waves.end(); ++i, ++n) {
(*i)->set_height (ht);
(*i)->set_y_position (n * ht);
}
}
void
AudioGhostRegion::set_colors ()
{
GhostRegion::set_colors();
guint fill_color;
if (is_automation_ghost()) {
fill_color = ARDOUR_UI::config()->color ("ghost track wave fill");
}
else {
fill_color = source_track_color(200);
}
for (uint32_t n=0; n < waves.size(); ++n) {
waves[n]->set_outline_color (ARDOUR_UI::config()->color ("ghost track wave"));
waves[n]->set_fill_color (fill_color);
waves[n]->set_clip_color (ARDOUR_UI::config()->color ("ghost track wave clip"));
waves[n]->set_zero_color (ARDOUR_UI::config()->color ("ghost track zero line"));
}
}
/** The general constructor; called when the destination timeaxisview doesn't have
* a midistreamview.
*
* @param tv TimeAxisView that this ghost region is on.
* @param source_tv TimeAxisView that we are the ghost for.
*/
MidiGhostRegion::MidiGhostRegion(TimeAxisView& tv, TimeAxisView& source_tv, double initial_unit_pos)
: GhostRegion(tv.ghost_group(), tv, source_tv, initial_unit_pos)
, _optimization_iterator (events.end ())
{
base_rect->lower_to_bottom();
update_range ();
midi_view()->NoteRangeChanged.connect (sigc::mem_fun (*this, &MidiGhostRegion::update_range));
}
/**
* @param msv MidiStreamView that this ghost region is on.
* @param source_tv TimeAxisView that we are the ghost for.
*/
MidiGhostRegion::MidiGhostRegion(MidiStreamView& msv, TimeAxisView& source_tv, double initial_unit_pos)
: GhostRegion(msv.midi_underlay_group, msv.trackview(), source_tv, initial_unit_pos)
, _optimization_iterator (events.end ())
{
base_rect->lower_to_bottom();
update_range ();
midi_view()->NoteRangeChanged.connect (sigc::mem_fun (*this, &MidiGhostRegion::update_range));
}
MidiGhostRegion::~MidiGhostRegion()
{
clear_events ();
}
MidiGhostRegion::GhostEvent::GhostEvent (NoteBase* e, ArdourCanvas::Container* g)
: event (e)
{
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rect = new ArdourCanvas::Rectangle (g, ArdourCanvas::Rect (e->x0(), e->y0(), e->x1(), e->y1()));
CANVAS_DEBUG_NAME (rect, "ghost note rect");
}
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MidiGhostRegion::GhostEvent::~GhostEvent ()
{
/* event is not ours to delete */
delete rect;
}
void
MidiGhostRegion::set_samples_per_pixel (double /*spu*/)
{
}
/** @return MidiStreamView that we are providing a ghost for */
MidiStreamView*
MidiGhostRegion::midi_view ()
{
StreamView* sv = source_trackview.view ();
assert (sv);
MidiStreamView* msv = dynamic_cast<MidiStreamView*> (sv);
assert (msv);
return msv;
}
void
MidiGhostRegion::set_height ()
{
GhostRegion::set_height();
update_range();
}
void
MidiGhostRegion::set_colors()
{
GhostRegion::set_colors();
for (EventList::iterator it = events.begin(); it != events.end(); ++it) {
(*it)->rect->set_fill_color (ARDOUR_UI::config()->color_mod((*it)->event->base_color(), "ghost track midi fill"));
(*it)->rect->set_outline_color (ARDOUR_UI::config()->color ("ghost track midi outline"));
}
}
void
MidiGhostRegion::update_range ()
{
MidiStreamView* mv = midi_view();
if (!mv) {
return;
}
double const h = std::max(1., floor (trackview.current_height() / double (mv->contents_note_range ())) -1);
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double const s = trackview.current_height() / double (mv->contents_note_range ());
for (EventList::iterator it = events.begin(); it != events.end(); ++it) {
uint8_t const note_num = (*it)->event->note()->note();
if (note_num < mv->lowest_note() || note_num > mv->highest_note()) {
(*it)->rect->hide();
} else {
(*it)->rect->show();
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double const y = trackview.current_height() - (note_num + 1 - mv->lowest_note()) * s;
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(*it)->rect->set_y0 (y);
(*it)->rect->set_y1 (y + h);
}
}
}
void
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MidiGhostRegion::add_note (NoteBase* n)
{
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GhostEvent* event = new GhostEvent (n, group);
events.push_back (event);
event->rect->set_fill_color (ARDOUR_UI::config()->color_mod(n->base_color(), "ghost track midi fill"));
event->rect->set_outline_color (ARDOUR_UI::config()->color ("ghost track midi outline"));
MidiStreamView* mv = midi_view();
if (mv) {
const uint8_t note_num = n->note()->note();
if (note_num < mv->lowest_note() || note_num > mv->highest_note()) {
event->rect->hide();
} else {
const double y = mv->note_to_y(note_num);
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event->rect->set_y0 (y);
event->rect->set_y1 (y + std::max(1., floor(mv->note_height()) -1));
}
}
}
void
MidiGhostRegion::clear_events()
{
for (EventList::iterator it = events.begin(); it != events.end(); ++it) {
delete *it;
}
events.clear();
_optimization_iterator = events.end ();
}
/** Update the x positions of our representation of a parent's note.
* @param parent The CanvasNote from the parent MidiRegionView.
*/
void
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MidiGhostRegion::update_note (NoteBase* parent)
{
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GhostEvent* ev = find_event (parent);
if (!ev) {
return;
}
double const x1 = parent->x0 ();
double const x2 = parent->x1 ();
ev->rect->set_x0 (x1);
ev->rect->set_x1 (x2);
}
void
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MidiGhostRegion::remove_note (NoteBase* note)
{
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GhostEvent* ev = find_event (note);
if (!ev) {
return;
}
events.remove (ev);
delete ev;
_optimization_iterator = events.end ();
}
/** Given a note in our parent region (ie the actual MidiRegionView), find our
* representation of it.
* @return Our Event, or 0 if not found.
*/
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MidiGhostRegion::GhostEvent *
MidiGhostRegion::find_event (NoteBase* parent)
{
/* we are using _optimization_iterator to speed up the common case where a caller
is going through our notes in order.
*/
if (_optimization_iterator != events.end()) {
++_optimization_iterator;
}
if (_optimization_iterator != events.end() && (*_optimization_iterator)->event == parent) {
return *_optimization_iterator;
}
for (_optimization_iterator = events.begin(); _optimization_iterator != events.end(); ++_optimization_iterator) {
if ((*_optimization_iterator)->event == parent) {
return *_optimization_iterator;
}
}
return 0;
}