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livetrax/libs/surfaces/push2/scale.cc

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/*
Copyright (C) 2016 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 "pbd/i18n.h"
#include "gtkmm2ext/gui_thread.h"
#include "canvas/colors.h"
#include "canvas/rectangle.h"
#include "canvas/text.h"
#include "canvas.h"
#include "menu.h"
#include "push2.h"
#include "scale.h"
using namespace ARDOUR;
using namespace std;
using namespace PBD;
using namespace Glib;
using namespace ArdourSurface;
using namespace ArdourCanvas;
static double unselected_root_alpha = 0.5;
ScaleLayout::ScaleLayout (Push2& p, Session& s)
: Push2Layout (p, s)
, last_vpot (-1)
, vpot_delta_cnt (0)
, root_button (0)
{
Pango::FontDescription fd ("Sans 10");
/* background */
bg = new Rectangle (this);
bg->set (Rect (0, 0, display_width(), display_height()));
bg->set_fill_color (p2.get_color (Push2::DarkBackground));
left_scroll_text = new Text (this);
left_scroll_text->set_font_description (fd);
left_scroll_text->set_position (Duple (10, 5));
left_scroll_text->set_color (p2.get_color (Push2::LightBackground));
close_text = new Text (this);
close_text->set_font_description (fd);
close_text->set_position (Duple (25, 5));
close_text->set_color (p2.get_color (Push2::LightBackground));
close_text->set (_("Close"));
right_scroll_text = new Text (this);
right_scroll_text->set_font_description (fd);
right_scroll_text->set_position (Duple (10 + (7 * Push2Canvas::inter_button_spacing()), 5));
right_scroll_text->set_color (p2.get_color (Push2::LightBackground));
Pango::FontDescription fd2 ("Sans 8");
inkey_text = new Text (this);
inkey_text->set_font_description (fd2);
inkey_text->set_position (Duple (10, 140));
inkey_text->set_color (p2.get_color (Push2::LightBackground));
inkey_text->set (_("InKey"));
chromatic_text = new Text (this);
chromatic_text->set_font_description (fd2);
chromatic_text->set_position (Duple (45, 140));
chromatic_text->set_color (p2.get_color (Push2::LightBackground));
chromatic_text->set (_("Chromatic"));
fixed_text = new Text (this);
fixed_text->set_font_description (fd2);
fixed_text->set_position (Duple (10 + (7 * Push2Canvas::inter_button_spacing()), 140));
fixed_text->set_color (p2.get_color (Push2::LightBackground));
fixed_text->set (_("Fixed"));
for (int n = 0; n < 8; ++n) {
/* text labels for root notes etc.*/
Text* t = new Text (this);
t->set_font_description (fd);
t->set_color (change_alpha (p2.get_color (Push2::LightBackground), unselected_root_alpha));
t->set_position (Duple (10 + (n * Push2Canvas::inter_button_spacing()), 5));
switch (n) {
case 0:
/* zeroth element is a dummy */
break;
case 1:
t->set (S_("Note|C"));
break;
case 2:
t->set (S_("Note|G"));
break;
case 3:
t->set (S_("Note|D"));
break;
case 4:
t->set (S_("Note|A"));
break;
case 5:
t->set (S_("Note|E"));
break;
case 6:
t->set (S_("Note|B"));
break;
}
upper_text.push_back (t);
t = new Text (this);
t->set_font_description (fd);
t->set_color (change_alpha (p2.get_color (Push2::LightBackground), unselected_root_alpha));
t->set_position (Duple (10 + (n*Push2Canvas::inter_button_spacing()), 140));
switch (n) {
case 0:
/* zeroth element is a dummy */
break;
case 1:
t->set (S_("Note|F"));
break;
case 2:
t->set (S_("Note|B\u266D/A\u266F"));
break;
case 3:
t->set (S_("Note|E\u266D/D\u266F"));
break;
case 4:
t->set (S_("Note|A\u266D/G\u266F"));
break;
case 5:
t->set (S_("Note|D\u266D/C\u266F"));
break;
case 6:
t->set (S_("Note|G\u266D/F\u266F"));
break;
}
lower_text.push_back (t);
}
build_scale_menu ();
p2.ScaleChange.connect (p2_connections, invalidator (*this), boost::bind (&ScaleLayout::show_root_state, this), &p2);
}
ScaleLayout::~ScaleLayout ()
{
}
void
ScaleLayout::render (Rect const& area, Cairo::RefPtr<Cairo::Context> context) const
{
render_children (area, context);
}
void
ScaleLayout::button_upper (uint32_t n)
{
if (n == 0) {
if (scale_menu->can_scroll_left()) {
scale_menu->scroll (Push2Menu::DirectionLeft, true);
} else {
p2.use_previous_layout ();
}
return;
}
if (n == 7) {
scale_menu->scroll (Push2Menu::DirectionRight, true);
return;
}
int root;
switch (n) {
case 1:
/* C */
root = 0;
break;
case 2:
/* G */
root = 7;
break;
case 3:
/* D */
root = 2;
break;
case 4:
/* A */
root = 9;
break;
case 5:
/* E */
root = 4;
break;
case 6:
/* B */
root = 11;
break;
case 7:
/* unused */
return;
}
p2.set_pad_scale (root, p2.root_octave(), p2.mode(), p2.in_key());
}
void
ScaleLayout::button_lower (uint32_t n)
{
if (n == 0) {
p2.set_pad_scale (p2.scale_root(), p2.root_octave(), p2.mode(), !p2.in_key());
return;
}
int root;
switch (n) {
case 1:
/* F */
root = 5;
break;
case 2:
/* B-flat */
root = 10;
break;
case 3:
/* E flat */
root = 3;
break;
case 4:
/* A flat */
root = 8;
break;
case 5:
/* D flat */
root = 1;
break;
case 6:
/* G flat */
root = 6;
break;
case 7:
/* fixed mode */
return;
}
p2.set_pad_scale (root, p2.root_octave(), p2.mode(), p2.in_key());
}
void
ScaleLayout::button_up ()
{
scale_menu->scroll (Push2Menu::DirectionUp);
}
void
ScaleLayout::button_down ()
{
scale_menu->scroll (Push2Menu::DirectionDown);
}
void
ScaleLayout::button_left ()
{
scale_menu->scroll (Push2Menu::DirectionLeft);
}
void
ScaleLayout::button_right ()
{
scale_menu->scroll (Push2Menu::DirectionRight);
}
void
ScaleLayout::show ()
{
last_vpot = -1;
/* all root buttons should be dimly lit */
Push2::ButtonID root_buttons[] = { Push2::Upper2, Push2::Upper3, Push2::Upper4, Push2::Upper5, Push2::Upper6, Push2::Upper7,
Push2::Lower2, Push2::Lower3, Push2::Lower4, Push2::Lower5, Push2::Lower6, Push2::Lower7, };
for (size_t n = 0; n < sizeof (root_buttons) / sizeof (root_buttons[0]); ++n) {
Push2::Button* b = p2.button_by_id (root_buttons[n]);
b->set_color (Push2::LED::DarkGray);
b->set_state (Push2::LED::OneShot24th);
p2.write (b->state_msg());
}
show_root_state ();
Container::show ();
}
void
ScaleLayout::strip_vpot (int n, int delta)
{
/* menu starts under the 2nd-from-left vpot */
if (n == 0) {
return;
}
if (last_vpot != n) {
uint32_t effective_column = n - 1;
uint32_t active = scale_menu->active ();
if (active / scale_menu->rows() != effective_column) {
/* knob turned is different than the current active column.
Just change that.
*/
scale_menu->set_active (effective_column * scale_menu->rows()); /* top entry of that column */
return;
}
/* new vpot, reset delta cnt */
vpot_delta_cnt = 0;
}
if ((delta < 0 && vpot_delta_cnt > 0) || (delta > 0 && vpot_delta_cnt < 0)) {
/* direction changed, reset */
vpot_delta_cnt = 0;
}
vpot_delta_cnt += delta;
last_vpot = n;
/* this thins out vpot delta events so that we don't scroll so fast
through the menu.
*/
const int vpot_slowdown_factor = 4;
if ((vpot_delta_cnt < 0) && (vpot_delta_cnt % vpot_slowdown_factor == 0)) {
scale_menu->scroll (Push2Menu::DirectionUp);
} else if (vpot_delta_cnt % vpot_slowdown_factor == 0) {
scale_menu->scroll (Push2Menu::DirectionDown);
}
}
void
ScaleLayout::build_scale_menu ()
{
vector<string> v;
/* must match in which enums are declared in push2.h
*/
v.push_back ("Dorian");
v.push_back ("Ionian (Major)");
v.push_back ("Minor");
v.push_back ("Harmonic Minor");
v.push_back ("MelodicMinor Asc.");
v.push_back ("MelodicMinor Desc.");
v.push_back ("Phrygian");
v.push_back ("Lydian");
v.push_back ("Mixolydian");
v.push_back ("Aeolian");
v.push_back ("Locrian");
v.push_back ("Pentatonic Major");
v.push_back ("Pentatonic Minor");
v.push_back ("Chromatic");
v.push_back ("BluesScale");
v.push_back ("Neapolitan Minor");
v.push_back ("Neapolitan Major");
v.push_back ("Oriental");
v.push_back ("Double Harmonic");
v.push_back ("Enigmatic");
v.push_back ("Hirajoshi");
v.push_back ("Hungarian Minor");
v.push_back ("Hungarian Major");
v.push_back ("Kumoi");
v.push_back ("Iwato");
v.push_back ("Hindu");
v.push_back ("Spanish 8 Tone");
v.push_back ("Pelog");
v.push_back ("Hungarian Gypsy");
v.push_back ("Overtone");
v.push_back ("Leading Whole Tone");
v.push_back ("Arabian");
v.push_back ("Balinese");
v.push_back ("Gypsy");
v.push_back ("Mohammedan");
v.push_back ("Javanese");
v.push_back ("Persian");
v.push_back ("Algeria");
scale_menu = new Push2Menu (this, v);
scale_menu->Rearranged.connect (menu_connections, invalidator (*this), boost::bind (&ScaleLayout::menu_rearranged, this), &p2);
scale_menu->set_layout (6, 6);
scale_menu->set_text_color (p2.get_color (Push2::ParameterName));
scale_menu->set_active_color (p2.get_color (Push2::LightBackground));
Pango::FontDescription fd ("Sans Bold 8");
scale_menu->set_font_description (fd);
/* move menu into position so that its leftmost column is in the
* 2nd-from-left column of the display/button layout.
*/
scale_menu->set_position (Duple (10 + Push2Canvas::inter_button_spacing(), 40));
/* listen for changes */
scale_menu->ActiveChanged.connect (menu_connections, invalidator (*this), boost::bind (&ScaleLayout::mode_changed, this), &p2);
}
void
ScaleLayout::show_root_state ()
{
if (!parent()) {
/* don't do this stuff if we're not visible */
return;
}
if (p2.in_key()) {
chromatic_text->set_color (change_alpha (chromatic_text->color(), unselected_root_alpha));
inkey_text->set_color (change_alpha (inkey_text->color(), 1.0));
} else {
inkey_text->set_color (change_alpha (chromatic_text->color(), unselected_root_alpha));
chromatic_text->set_color (change_alpha (inkey_text->color(), 1.0));
}
Pango::FontDescription fd_bold ("Sans Bold 10");
Pango::FontDescription fd ("Sans 10");
uint32_t highlight_text = 0;
vector<Text*>* none_text_array;
vector<Text*>* one_text_array;
Push2::ButtonID bid;
switch (p2.scale_root()) {
case 0:
highlight_text = 1;
none_text_array = &lower_text;
one_text_array = &upper_text;
bid = Push2::Upper2;
break;
case 1:
highlight_text = 5;
none_text_array = &lower_text;
one_text_array = &upper_text;
bid = Push2::Lower6;
break;
case 2:
highlight_text = 3;
none_text_array = &lower_text;
one_text_array = &upper_text;
bid = Push2::Upper4;
break;
case 3:
highlight_text = 3;
none_text_array = &upper_text;
one_text_array = &lower_text;
bid = Push2::Lower4;
break;
case 4:
highlight_text = 5;
none_text_array = &lower_text;
one_text_array = &upper_text;
bid = Push2::Upper6;
break;
case 5:
highlight_text = 1;
none_text_array = &upper_text;
one_text_array = &lower_text;
bid = Push2::Lower2;
break;
case 6:
highlight_text = 6;
none_text_array = &upper_text;
one_text_array = &lower_text;
bid = Push2::Lower7;
break;
case 7:
highlight_text = 2;
none_text_array = &lower_text;
one_text_array = &upper_text;
bid = Push2::Upper3;
break;
case 8:
highlight_text = 4;
none_text_array = &upper_text;
one_text_array = &lower_text;
bid = Push2::Lower5;
break;
case 9:
highlight_text = 4;
none_text_array = &lower_text;
one_text_array = &upper_text;
bid = Push2::Upper5;
break;
case 10:
highlight_text = 2;
none_text_array = &upper_text;
one_text_array = &lower_text;
bid = Push2::Lower3;
break;
case 11:
highlight_text = 6;
none_text_array = &lower_text;
one_text_array = &upper_text;
bid = Push2::Upper7;
break;
}
if (none_text_array) {
for (uint32_t nn = 1; nn < 7; ++nn) {
(*none_text_array)[nn]->set_font_description (fd);
(*none_text_array)[nn]->set_color (change_alpha ((*none_text_array)[nn]->color(), unselected_root_alpha));
if (nn == highlight_text) {
(*one_text_array)[nn]->set_font_description (fd_bold);
(*one_text_array)[nn]->set_color (change_alpha ((*one_text_array)[nn]->color(), 1.0));
} else {
(*one_text_array)[nn]->set_font_description (fd);
(*one_text_array)[nn]->set_color (change_alpha ((*one_text_array)[nn]->color(), unselected_root_alpha));
}
}
}
Push2::Button* b = p2.button_by_id (bid);
if (b != root_button) {
if (root_button) {
/* turn the old one off (but not totally) */
root_button->set_color (Push2::LED::DarkGray);
root_button->set_state (Push2::LED::OneShot24th);
p2.write (root_button->state_msg());
}
root_button = b;
if (root_button) {
/* turn the new one on */
root_button->set_color (Push2::LED::White);
root_button->set_state (Push2::LED::OneShot24th);
p2.write (root_button->state_msg());
}
}
scale_menu->set_active ((uint32_t) p2.mode ());
}
void
ScaleLayout::mode_changed ()
{
MusicalMode::Type m = (MusicalMode::Type) scale_menu->active();
p2.set_pad_scale (p2.scale_root(), p2.root_octave(), m, p2.in_key());
}
void
ScaleLayout::menu_rearranged ()
{
if (scale_menu->can_scroll_left()) {
left_scroll_text->set ("<");
close_text->hide ();
} else {
left_scroll_text->set (string());
close_text->show ();
}
if (scale_menu->can_scroll_right()) {
right_scroll_text->set (">");
} else {
right_scroll_text->set (string());
}
}
void
ScaleLayout::update_cursor_buttons ()
{
Push2::Button* b;
bool change;
b = p2.button_by_id (Push2::Up);
change = false;
if (scale_menu->active() == 0) {
if (b->color_index() != Push2::LED::Black) {
b->set_color (Push2::LED::Black);
change = true;
}
} else {
if (b->color_index() != Push2::LED::White) {
b->set_color (Push2::LED::White);
change = true;
}
}
if (change) {
b->set_state (Push2::LED::OneShot24th);
p2.write (b->state_msg());
}
/* down */
b = p2.button_by_id (Push2::Down);
change = false;
if (scale_menu->active() == scale_menu->items() - 1) {
if (b->color_index() != Push2::LED::Black) {
b->set_color (Push2::LED::Black);
change = true;
}
} else {
if (b->color_index() != Push2::LED::White) {
b->set_color (Push2::LED::White);
change = true;
}
}
if (change) {
b->set_color (Push2::LED::OneShot24th);
p2.write (b->state_msg());
}
/* left */
b = p2.button_by_id (Push2::Left);
change = false;
if (scale_menu->active() < scale_menu->rows()) {
if (b->color_index() != Push2::LED::Black) {
b->set_color (Push2::LED::Black);
change = true;
}
} else {
if (b->color_index() != Push2::LED::White) {
b->set_color (Push2::LED::White);
change = true;
}
}
if (change) {
b->set_color (Push2::LED::OneShot24th);
p2.write (b->state_msg());
}
/* right */
b = p2.button_by_id (Push2::Right);
change = false;
if (scale_menu->active() > (scale_menu->items() - scale_menu->rows())) {
if (b->color_index() != Push2::LED::Black) {
b->set_color (Push2::LED::Black);
change = true;
}
} else {
if (b->color_index() != Push2::LED::White) {
b->set_color (Push2::LED::White);
change = true;
}
}
if (change) {
b->set_color (Push2::LED::OneShot24th);
p2.write (b->state_msg());
}
}