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ardour/gtk2_ardour/piano_roll_header.cc
Robin Gareus 4050ca5633
Update GPL boilerplate and (C) 
Copyright-holder and year information is extracted from git log.

git history begins in 2005. So (C) from 1998..2005 is lost. Also some
(C) assignment of commits where the committer didn't use --author.
2019-08-03 15:53:15 +02:00

727 lines
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/*
* Copyright (C) 2008-2014 David Robillard <d@drobilla.net>
* Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2009-2013 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2014-2017 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 <iostream>
#include "evoral/midi_events.h"
#include "ardour/midi_track.h"
#include "gtkmm2ext/keyboard.h"
#include "editing.h"
#include "piano_roll_header.h"
#include "midi_time_axis.h"
#include "midi_streamview.h"
#include "public_editor.h"
#include "ui_config.h"
using namespace std;
using namespace Gtkmm2ext;
PianoRollHeader::Color PianoRollHeader::white = PianoRollHeader::Color(0.77f, 0.78f, 0.76f);
PianoRollHeader::Color PianoRollHeader::white_highlight = PianoRollHeader::Color(1.00f, 0.40f, 0.40f);
PianoRollHeader::Color PianoRollHeader::white_shade_light = PianoRollHeader::Color(0.95f, 0.95f, 0.95f);
PianoRollHeader::Color PianoRollHeader::white_shade_dark = PianoRollHeader::Color(0.56f, 0.56f, 0.56f);
PianoRollHeader::Color PianoRollHeader::black = PianoRollHeader::Color(0.24f, 0.24f, 0.24f);
PianoRollHeader::Color PianoRollHeader::black_highlight = PianoRollHeader::Color(0.60f, 0.10f, 0.10f);
PianoRollHeader::Color PianoRollHeader::black_shade_light = PianoRollHeader::Color(0.46f, 0.46f, 0.46f);
PianoRollHeader::Color PianoRollHeader::black_shade_dark = PianoRollHeader::Color(0.1f, 0.1f, 0.1f);
PianoRollHeader::Color::Color()
: r(1.0f)
, g(1.0f)
, b(1.0f)
{
}
PianoRollHeader::Color::Color(double _r, double _g, double _b)
: r(_r)
, g(_g)
, b(_b)
{
}
inline void
PianoRollHeader::Color::set(const PianoRollHeader::Color& c)
{
r = c.r;
g = c.g;
b = c.b;
}
PianoRollHeader::PianoRollHeader(MidiStreamView& v)
: _view(v)
, _highlighted_note(NO_MIDI_NOTE)
, _clicked_note(NO_MIDI_NOTE)
, _dragging(false)
{
add_events (Gdk::BUTTON_PRESS_MASK |
Gdk::BUTTON_RELEASE_MASK |
Gdk::POINTER_MOTION_MASK |
Gdk::ENTER_NOTIFY_MASK |
Gdk::LEAVE_NOTIFY_MASK |
Gdk::SCROLL_MASK);
for (int i = 0; i < 128; ++i) {
_active_notes[i] = false;
}
_view.NoteRangeChanged.connect (sigc::mem_fun (*this, &PianoRollHeader::note_range_changed));
}
inline void
create_path(Cairo::RefPtr<Cairo::Context> cr, double x[], double y[], int start, int stop)
{
cr->move_to(x[start], y[start]);
for (int i = start+1; i <= stop; ++i) {
cr->line_to(x[i], y[i]);
}
}
inline void
render_rect(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
{
cr->set_source_rgb(bg.r, bg.g, bg.b);
create_path(cr, x, y, 0, 4);
cr->fill();
cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
create_path(cr, x, y, 0, 2);
cr->stroke();
cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
create_path(cr, x, y, 2, 4);
cr->stroke();
}
inline void
render_cf(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
{
cr->set_source_rgb(bg.r, bg.g, bg.b);
create_path(cr, x, y, 0, 6);
cr->fill();
cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
create_path(cr, x, y, 0, 4);
cr->stroke();
cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
create_path(cr, x, y, 4, 6);
cr->stroke();
}
inline void
render_eb(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
{
cr->set_source_rgb(bg.r, bg.g, bg.b);
create_path(cr, x, y, 0, 6);
cr->fill();
cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
create_path(cr, x, y, 0, 2);
cr->stroke();
create_path(cr, x, y, 4, 5);
cr->stroke();
cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
create_path(cr, x, y, 2, 4);
cr->stroke();
create_path(cr, x, y, 5, 6);
cr->stroke();
}
inline void
render_dga(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
{
cr->set_source_rgb(bg.r, bg.g, bg.b);
create_path(cr, x, y, 0, 8);
cr->fill();
cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
create_path(cr, x, y, 0, 4);
cr->stroke();
create_path(cr, x, y, 6, 7);
cr->stroke();
cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
create_path(cr, x, y, 4, 6);
cr->stroke();
create_path(cr, x, y, 7, 8);
cr->stroke();
}
void
PianoRollHeader::get_path(PianoRollHeader::ItemType note_type, int note, double x[], double y[])
{
double y_pos = floor(_view.note_to_y(note)) + 1.5f;
double note_height;
double other_y1 = floor(_view.note_to_y(note+1)) + floor(_note_height / 2.0f) + 2.5f;
double other_y2 = floor(_view.note_to_y(note-1)) + floor(_note_height / 2.0f) + 1.0f;
double width = get_width();
if (note == 0) {
note_height = floor(_view.contents_height()) - y_pos + 2.;
} else {
note_height = floor(_view.note_to_y(note - 1)) - y_pos + 2.;
}
switch (note_type) {
case BLACK_SEPARATOR:
x[0] = 1.5f;
y[0] = y_pos;
x[1] = _black_note_width;
y[1] = y_pos;
break;
case BLACK_MIDDLE_SEPARATOR:
x[0] = _black_note_width;
y[0] = y_pos + floor(_note_height / 2.0f);
x[1] = width - 1.0f;
y[1] = y[0];
break;
case BLACK:
x[0] = 1.5f;
y[0] = y_pos + note_height - 0.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = _black_note_width;
y[2] = y_pos + 1.0f;
x[3] = _black_note_width;
y[3] = y_pos + note_height - 0.5f;
x[4] = 1.5f;
y[4] = y_pos + note_height - 0.5f;
return;
case WHITE_SEPARATOR:
x[0] = 1.5f;
y[0] = y_pos;
x[1] = width - 1.5f;
y[1] = y_pos;
break;
case WHITE_RECT:
x[0] = 1.5f;
y[0] = y_pos + note_height - 0.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = width - 1.5f;
y[2] = y_pos + 1.0f;
x[3] = width - 1.5f;
y[3] = y_pos + note_height - 0.5f;
x[4] = 1.5f;
y[4] = y_pos + note_height - 0.5f;
return;
case WHITE_CF:
x[0] = 1.5f;
y[0] = y_pos + note_height - 1.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = _black_note_width + 1.0f;
y[2] = y_pos + 1.0f;
x[3] = _black_note_width + 1.0f;
y[3] = other_y1;
x[4] = width - 1.5f;
y[4] = other_y1;
x[5] = width - 1.5f;
y[5] = y_pos + note_height - 1.5f;
x[6] = 1.5f;
y[6] = y_pos + note_height - 1.5f;
return;
case WHITE_EB:
x[0] = 1.5f;
y[0] = y_pos + note_height - 1.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = width - 1.5f;
y[2] = y_pos + 1.0f;
x[3] = width - 1.5f;
y[3] = other_y2;
x[4] = _black_note_width + 1.0f;
y[4] = other_y2;
x[5] = _black_note_width + 1.0f;
y[5] = y_pos + note_height - 1.5f;
x[6] = 1.5f;
y[6] = y_pos + note_height - 1.5f;
return;
case WHITE_DGA:
x[0] = 1.5f;
y[0] = y_pos + note_height - 1.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = _black_note_width + 1.0f;
y[2] = y_pos + 1.0f;
x[3] = _black_note_width + 1.0f;
y[3] = other_y1;
x[4] = width - 1.5f;
y[4] = other_y1;
x[5] = width - 1.5f;
y[5] = other_y2;
x[6] = _black_note_width + 1.0f;
y[6] = other_y2;
x[7] = _black_note_width + 1.0f;
y[7] = y_pos + note_height - 1.5f;
x[8] = 1.5f;
y[8] = y_pos + note_height - 1.5f;
return;
default:
return;
}
}
bool
PianoRollHeader::on_expose_event (GdkEventExpose* ev)
{
GdkRectangle& rect = ev->area;
double font_size;
int lowest, highest;
Cairo::RefPtr<Cairo::Context> cr = get_window()->create_cairo_context();
Cairo::RefPtr<Cairo::LinearGradient> pat = Cairo::LinearGradient::create(0, 0, _black_note_width, 0);
double x[9];
double y[9];
Color bg, tl_shadow, br_shadow;
int oct_rel;
int y1 = max(rect.y, 0);
int y2 = min(rect.y + rect.height, (int) floor(_view.contents_height() - 1.0f));
//Cairo::TextExtents te;
lowest = max(_view.lowest_note(), _view.y_to_note(y2));
highest = min(_view.highest_note(), _view.y_to_note(y1));
if (lowest > 127) {
lowest = 0;
}
cr->select_font_face ("Georgia", Cairo::FONT_SLANT_NORMAL, Cairo::FONT_WEIGHT_BOLD);
font_size = min((double) 10.0f, _note_height - 4.0f);
cr->set_font_size(font_size);
/* fill the entire rect with the color for non-highlighted white notes.
* then we won't have to draw the background for those notes,
* and would only have to draw the background for the one highlighted white note*/
//cr->rectangle(rect.x, rect.y, rect.width, rect.height);
//cr->set_source_rgb(white.r, white.g, white.b);
//cr->fill();
cr->set_line_width(1.0f);
/* draw vertical lines with shade at both ends of the widget */
cr->set_source_rgb(0.0f, 0.0f, 0.0f);
cr->move_to(0.5f, rect.y);
cr->line_to(0.5f, rect.y + rect.height);
cr->stroke();
cr->move_to(get_width() - 0.5f, rect.y);
cr->line_to(get_width() - 0.5f, rect.y + rect.height);
cr->stroke();
//pat->add_color_stop_rgb(0.0, 0.33, 0.33, 0.33);
//pat->add_color_stop_rgb(0.2, 0.39, 0.39, 0.39);
//pat->add_color_stop_rgb(1.0, 0.22, 0.22, 0.22);
//cr->set_source(pat);
for (int i = lowest; i <= highest; ++i) {
oct_rel = i % 12;
switch (oct_rel) {
case 1:
case 3:
case 6:
case 8:
case 10:
/* black note */
if (i == _highlighted_note) {
bg.set(black_highlight);
} else {
bg.set(black);
}
if (_active_notes[i]) {
tl_shadow.set(black_shade_dark);
br_shadow.set(black_shade_light);
} else {
tl_shadow.set(black_shade_light);
br_shadow.set(black_shade_dark);
}
/* draw black separators */
cr->set_source_rgb(0.0f, 0.0f, 0.0f);
get_path(BLACK_SEPARATOR, i, x, y);
create_path(cr, x, y, 0, 1);
cr->stroke();
get_path(BLACK_MIDDLE_SEPARATOR, i, x, y);
create_path(cr, x, y, 0, 1);
cr->stroke();
get_path(BLACK, i, x, y);
render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
break;
default:
/* white note */
if (i == _highlighted_note) {
bg.set(white_highlight);
} else {
bg.set(white);
}
if (_active_notes[i]) {
tl_shadow.set(white_shade_dark);
br_shadow.set(white_shade_light);
} else {
tl_shadow.set(white_shade_light);
br_shadow.set(white_shade_dark);
}
switch(oct_rel) {
case 0:
case 5:
if (i == _view.highest_note()) {
get_path(WHITE_RECT, i, x, y);
render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
} else {
get_path(WHITE_CF, i, x, y);
render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
}
break;
case 2:
case 7:
case 9:
if (i == _view.highest_note()) {
get_path(WHITE_EB, i, x, y);
render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
} else if (i == _view.lowest_note()) {
get_path(WHITE_CF, i, x, y);
render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
} else {
get_path(WHITE_DGA, i, x, y);
render_dga(cr, i, x, y, bg, tl_shadow, br_shadow);
}
break;
case 4:
case 11:
cr->set_source_rgb(0.0f, 0.0f, 0.0f);
get_path(WHITE_SEPARATOR, i, x, y);
create_path(cr, x, y, 0, 1);
cr->stroke();
if (i == _view.lowest_note()) {
get_path(WHITE_RECT, i, x, y);
render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
} else {
get_path(WHITE_EB, i, x, y);
render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
}
break;
default:
break;
}
break;
}
/* render the name of which C this is */
if (oct_rel == 0) {
std::stringstream s;
double y = floor(_view.note_to_y(i)) - 0.5f;
double note_height = floor(_view.note_to_y(i - 1)) - y;
int cn = i / 12 - 1;
s << "C" << cn;
//cr->get_text_extents(s.str(), te);
cr->set_source_rgb(0.30f, 0.30f, 0.30f);
cr->move_to(2.0f, y + note_height - 1.0f - (note_height - font_size) / 2.0f);
cr->show_text(s.str());
}
}
return true;
}
bool
PianoRollHeader::on_motion_notify_event (GdkEventMotion* ev)
{
int note = _view.y_to_note(ev->y);
set_note_highlight (note);
if (_dragging) {
if ( false /*editor().current_mouse_mode() == Editing::MouseRange*/ ) { //ToDo: fix this. this mode is buggy, and of questionable utility anyway
/* select note range */
if (Keyboard::no_modifiers_active (ev->state)) {
AddNoteSelection (note); // EMIT SIGNAL
}
} else {
/* play notes */
/* redraw already taken care of above in set_note_highlight */
if (_clicked_note != NO_MIDI_NOTE && _clicked_note != note) {
_active_notes[_clicked_note] = false;
send_note_off(_clicked_note);
_clicked_note = note;
if (!_active_notes[note]) {
_active_notes[note] = true;
send_note_on(note);
}
}
}
}
//win->process_updates(false);
return true;
}
bool
PianoRollHeader::on_button_press_event (GdkEventButton* ev)
{
int note = _view.y_to_note(ev->y);
bool tertiary = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
if (ev->button == 2 && Keyboard::no_modifiers_active (ev->state)) {
SetNoteSelection (note); // EMIT SIGNAL
return true;
} else if (tertiary && (ev->button == 1 || ev->button == 2)) {
ExtendNoteSelection (note); // EMIT SIGNAL
return true;
} else if (ev->button == 1 && note >= 0 && note < 128) {
add_modal_grab();
_dragging = true;
if (!_active_notes[note]) {
_active_notes[note] = true;
_clicked_note = note;
send_note_on(note);
invalidate_note_range(note, note);
} else {
reset_clicked_note(note);
}
}
return true;
}
bool
PianoRollHeader::on_button_release_event (GdkEventButton* ev)
{
int note = _view.y_to_note(ev->y);
if (false /*editor().current_mouse_mode() == Editing::MouseRange*/ ) { //Todo: this mode is buggy, and of questionable utility anyway
if (Keyboard::no_modifiers_active (ev->state)) {
AddNoteSelection (note); // EMIT SIGNAL
} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
ToggleNoteSelection (note); // EMIT SIGNAL
} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
ExtendNoteSelection (note); // EMIT SIGNAL
}
} else {
if (_dragging) {
remove_modal_grab();
if (note == _clicked_note) {
reset_clicked_note(note);
}
}
}
_dragging = false;
return true;
}
void
PianoRollHeader::set_note_highlight (uint8_t note) {
if (_highlighted_note == note) {
return;
}
if (_highlighted_note != NO_MIDI_NOTE) {
if (note > _highlighted_note) {
invalidate_note_range (_highlighted_note, note);
} else {
invalidate_note_range (note, _highlighted_note);
}
}
_highlighted_note = note;
if (_highlighted_note != NO_MIDI_NOTE) {
invalidate_note_range (_highlighted_note, _highlighted_note);
}
}
bool
PianoRollHeader::on_enter_notify_event (GdkEventCrossing* ev)
{
set_note_highlight (_view.y_to_note(ev->y));
return true;
}
bool
PianoRollHeader::on_leave_notify_event (GdkEventCrossing*)
{
invalidate_note_range(_highlighted_note, _highlighted_note);
if (_clicked_note != NO_MIDI_NOTE) {
reset_clicked_note(_clicked_note, _clicked_note != _highlighted_note);
}
_highlighted_note = NO_MIDI_NOTE;
return true;
}
bool
PianoRollHeader::on_scroll_event (GdkEventScroll*)
{
return true;
}
void
PianoRollHeader::note_range_changed()
{
_note_height = floor(_view.note_height()) + 0.5f;
queue_draw();
}
void
PianoRollHeader::invalidate_note_range(int lowest, int highest)
{
Glib::RefPtr<Gdk::Window> win = get_window();
Gdk::Rectangle rect;
// the non-rectangular geometry of some of the notes requires more
// redraws than the notes that actually changed.
switch(lowest % 12) {
case 0:
case 5:
lowest = max((int) _view.lowest_note(), lowest);
break;
default:
lowest = max((int) _view.lowest_note(), lowest - 1);
break;
}
switch(highest % 12) {
case 4:
case 11:
highest = min((int) _view.highest_note(), highest);
break;
case 1:
case 3:
case 6:
case 8:
case 10:
highest = min((int) _view.highest_note(), highest + 1);
break;
default:
highest = min((int) _view.highest_note(), highest + 2);
break;
}
double y = _view.note_to_y(highest);
double height = _view.note_to_y(lowest - 1) - y;
rect.set_x(0);
rect.set_width(get_width());
rect.set_y((int) floor(y));
rect.set_height((int) floor(height));
if (win) {
win->invalidate_rect(rect, false);
}
}
void
PianoRollHeader::on_size_request(Gtk::Requisition* r)
{
r->width = std::max (20.f, rintf (20.f * UIConfiguration::instance().get_ui_scale()));
}
void
PianoRollHeader::on_size_allocate(Gtk::Allocation& a)
{
DrawingArea::on_size_allocate(a);
_black_note_width = floor(0.7 * get_width()) + 0.5f;
}
void
PianoRollHeader::send_note_on(uint8_t note)
{
boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&_view.trackview ());
//cerr << "note on: " << (int) note << endl;
if (track) {
_event[0] = (MIDI_CMD_NOTE_ON | mtv->get_channel_for_add ());
_event[1] = note;
_event[2] = 100;
track->write_immediate_event(3, _event);
}
}
void
PianoRollHeader::send_note_off(uint8_t note)
{
boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&_view.trackview ());
if (track) {
_event[0] = (MIDI_CMD_NOTE_OFF | mtv->get_channel_for_add ());
_event[1] = note;
_event[2] = 100;
track->write_immediate_event(3, _event);
}
}
void
PianoRollHeader::reset_clicked_note (uint8_t note, bool invalidate)
{
_active_notes[note] = false;
_clicked_note = NO_MIDI_NOTE;
send_note_off (note);
if (invalidate) {
invalidate_note_range (note, note);
}
}
PublicEditor&
PianoRollHeader::editor() const
{
return _view.trackview().editor();
}
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