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livetrax/gtk2_ardour/midi_channel_selector.cc

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/*
Copyright (C) 2008 Paul Davis
Author: Hans Baier
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 <sstream>
#include "midi_channel_selector.h"
#include "gtkmm/separator.h"
#include "i18n.h"
#include "rgb_macros.h"
using namespace std;
using namespace Gtk;
using namespace sigc;
using namespace ARDOUR;
MidiChannelSelector::MidiChannelSelector(int n_rows, int n_columns, int start_row, int start_column)
: Table(n_rows, n_columns, true)
, _recursion_counter(0)
{
assert(n_rows >= 4);
assert(n_rows >= start_row + 4);
assert(n_columns >=4);
assert(n_columns >= start_column + 4);
property_column_spacing() = 0;
property_row_spacing() = 0;
uint8_t channel_nr = 0;
for (int row = 0; row < 4; ++row) {
for (int column = 0; column < 4; ++column) {
ostringstream channel;
channel << int(++channel_nr);
_button_labels[row][column].set_text(channel.str());
_button_labels[row][column].set_justify(JUSTIFY_RIGHT);
_buttons[row][column].add(_button_labels[row][column]);
_buttons[row][column].signal_toggled().connect(
bind(
mem_fun(this, &MidiChannelSelector::button_toggled),
&_buttons[row][column],
channel_nr - 1));
int table_row = start_row + row;
int table_column = start_column + column;
attach(_buttons[row][column], table_column, table_column + 1, table_row, table_row + 1);
}
}
}
MidiChannelSelector::~MidiChannelSelector()
{
}
void
MidiChannelSelector::set_channel_colors(const uint32_t new_channel_colors[16])
{
for (int row = 0; row < 4; ++row) {
for (int column = 0; column < 4; ++column) {
char color_normal[8];
char color_active[8];
snprintf(color_normal, 8, "#%x", UINT_INTERPOLATE(new_channel_colors[row * 4 + column], 0x000000ff, 0.6));
snprintf(color_active, 8, "#%x", new_channel_colors[row * 4 + column]);
_buttons[row][column].modify_bg(STATE_NORMAL, Gdk::Color(color_normal));
_buttons[row][column].modify_bg(STATE_ACTIVE, Gdk::Color(color_active));
}
}
}
void
MidiChannelSelector::set_default_channel_color()
{
for (int row = 0; row < 4; ++row) {
for (int column = 0; column < 4; ++column) {
_buttons[row][column].unset_bg(STATE_NORMAL);
_buttons[row][column].unset_bg(STATE_ACTIVE);
}
}
}
SingleMidiChannelSelector::SingleMidiChannelSelector(uint8_t active_channel)
: MidiChannelSelector()
{
_last_active_button = 0;
ToggleButton* button = &_buttons[active_channel / 4][active_channel % 4];
_active_channel = active_channel;
button->set_active(true);
_last_active_button = button;
}
void
SingleMidiChannelSelector::button_toggled(ToggleButton* button, uint8_t channel)
{
++_recursion_counter;
if (_recursion_counter == 1) {
// if the current button is active it must
// be different from the first one
if (button->get_active()) {
if (_last_active_button) {
_last_active_button->set_active(false);
_active_channel = channel;
_last_active_button = button;
channel_selected.emit(channel);
}
} else {
// if not, the user pressed the already active button
button->set_active(true);
_active_channel = channel;
}
}
--_recursion_counter;
}
MidiMultipleChannelSelector::MidiMultipleChannelSelector(ChannelMode mode, uint16_t mask)
: MidiChannelSelector(4, 6, 0, 0)
, _channel_mode(mode)
{
_select_all.add(*manage(new Label(_("All"))));
_select_all.signal_clicked().connect(
bind(mem_fun(this, &MidiMultipleChannelSelector::select_all), true));
_select_none.add(*manage(new Label(_("None"))));
_select_none.signal_clicked().connect(
bind(mem_fun(this, &MidiMultipleChannelSelector::select_all), false));
_invert_selection.add(*manage(new Label(_("Invert"))));
_invert_selection.signal_clicked().connect(
mem_fun(this, &MidiMultipleChannelSelector::invert_selection));
_force_channel.add(*manage(new Label(_("Force"))));
_force_channel.signal_toggled().connect(
mem_fun(this, &MidiMultipleChannelSelector::force_channels_button_toggled));
set_homogeneous(false);
attach(*manage(new VSeparator()), 4, 5, 0, 4, SHRINK, FILL, 0, 0);
//set_row_spacing(4, -5);
attach(_select_all, 5, 6, 0, 1);
attach(_select_none, 5, 6, 1, 2);
attach(_invert_selection, 5, 6, 2, 3);
attach(_force_channel, 5, 6, 3, 4);
set_selected_channels(mask);
}
MidiMultipleChannelSelector::~MidiMultipleChannelSelector()
{
mode_changed.clear();
}
void
MidiMultipleChannelSelector::set_channel_mode(ChannelMode mode, uint16_t mask)
{
switch (mode) {
case AllChannels:
_force_channel.set_active(false);
set_selected_channels(0xFFFF);
break;
case FilterChannels:
_force_channel.set_active(false);
set_selected_channels(mask);
break;
case ForceChannel:
_force_channel.set_active(true);
for (uint16_t i = 0; i < 16; i++) {
ToggleButton* button = &_buttons[i / 4][i % 4];
button->set_active(i == mask);
}
}
}
uint16_t
MidiMultipleChannelSelector::get_selected_channels() const
{
uint16_t selected_channels = 0;
for (uint16_t i = 0; i < 16; i++) {
const ToggleButton* button = &_buttons[i / 4][i % 4];
if (button->get_active()) {
selected_channels |= (1L << i);
}
}
return selected_channels;
}
void
MidiMultipleChannelSelector::set_selected_channels(uint16_t selected_channels)
{
for (uint16_t i = 0; i < 16; i++) {
ToggleButton* button = &_buttons[i / 4][i % 4];
if (selected_channels & (1L << i)) {
button->set_active(true);
} else {
button->set_active(false);
}
}
}
void
MidiMultipleChannelSelector::button_toggled(ToggleButton *button, uint8_t channel)
{
++_recursion_counter;
if (_recursion_counter == 1) {
if (_channel_mode == ForceChannel) {
mode_changed.emit(_channel_mode, channel);
set_selected_channels(1 << channel);
} else {
mode_changed.emit(_channel_mode, get_selected_channels());
}
}
--_recursion_counter;
}
void
MidiMultipleChannelSelector::force_channels_button_toggled()
{
if (_force_channel.get_active()) {
_channel_mode = ForceChannel;
bool found_first_active = false;
// leave only the first button enabled
uint16_t active_channel = 0;
for (int i = 0; i <= 15; i++) {
ToggleButton* button = &_buttons[i / 4][i % 4];
if (button->get_active()) {
if (found_first_active) {
++_recursion_counter;
button->set_active(false);
--_recursion_counter;
} else {
found_first_active = true;
active_channel = i;
}
}
}
if (!found_first_active) {
_buttons[0][0].set_active(true);
}
_select_all.set_sensitive(false);
_select_none.set_sensitive(false);
_invert_selection.set_sensitive(false);
mode_changed.emit(_channel_mode, active_channel);
} else {
_channel_mode = FilterChannels;
_select_all.set_sensitive(true);
_select_none.set_sensitive(true);
_invert_selection.set_sensitive(true);
mode_changed.emit(FilterChannels, get_selected_channels());
}
}
void
MidiMultipleChannelSelector::select_all(bool on)
{
if (_channel_mode == ForceChannel)
return;
++_recursion_counter;
for (uint16_t i = 0; i < 16; i++) {
ToggleButton* button = &_buttons[i / 4][i % 4];
button->set_active(on);
}
--_recursion_counter;
mode_changed.emit(_channel_mode, get_selected_channels());
}
void
MidiMultipleChannelSelector::invert_selection(void)
{
if (_channel_mode == ForceChannel)
return;
++_recursion_counter;
for (uint16_t i = 0; i < 16; i++) {
ToggleButton* button = &_buttons[i / 4][i % 4];
if (button->get_active()) {
button->set_active(false);
} else {
button->set_active(true);
}
}
--_recursion_counter;
mode_changed.emit(_channel_mode, get_selected_channels());
}