enough with umpteen "i18n.h" files. Consolidate on pbd/i18n.h
[ardour.git] / gtk2_ardour / midi_channel_selector.cc
index 1b0e9ecfbb406fa067da86dd883d839ce5da2180..1da8fd9c0059dfcc9e5179a067d0dde9c8a02014 100644 (file)
@@ -1,36 +1,75 @@
-#include "midi_channel_selector.h"
-#include "gtkmm/separator.h"
-#include "i18n.h"
+/*
+    Copyright (C) 2008-2013 Paul Davis
+    Original 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 <algorithm>
 #include <sstream>
+#include <gtkmm/separator.h>
+#include <gtkmm/box.h>
+#include <gtkmm/label.h>
+#include <gtkmm/togglebutton.h>
+#include <gtkmm/radiobutton.h>
+#include <gtkmm/table.h>
+
+#include "pbd/compose.h"
+#include "pbd/ffs.h"
+
+#include "gtkmm2ext/gtk_ui.h"
+#include "gtkmm2ext/gui_thread.h"
+#include "gtkmm2ext/utils.h"
+
+#include "ardour/midi_track.h"
+
+#include "midi_channel_selector.h"
+#include "rgb_macros.h"
+
+#include "pbd/i18n.h"
 
 using namespace std;
 using namespace Gtk;
-using namespace sigc;
-
-MidiChannelSelector::MidiChannelSelector(int no_rows, int no_columns, int start_row, int start_column) :
-       Table(no_rows, no_columns, true), _recursion_counter(0)
-{      
-       assert(no_rows >= 4);
-       assert(no_rows >= start_row + 4);
-       assert(no_columns >=4);
-       assert(no_columns >= start_column + 4);
-       
+using namespace ARDOUR;
+
+MidiChannelSelector::MidiChannelSelector(int n_rows, int n_columns, int start_row, int start_column)
+       : Table(std::max(4, std::max(n_rows,    start_row    + 4)),
+               std::max(4, std::max(n_columns, start_column + 4)),
+               true)
+       , _recursion_counter(0)
+{
        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) {
+       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),
+                               sigc::bind(
+                                       sigc::mem_fun(this, &MidiChannelSelector::button_toggled),
                                        &_buttons[row][column],
                                        channel_nr - 1));
+                       _buttons[row][column].set_widget_name (X_("MidiChannelSelectorButton"));
+
+                       _buttons[row][column].signal_button_release_event().connect(
+                                sigc::mem_fun(this, &MidiChannelSelector::was_clicked), false);
 
                        int table_row    = start_row + row;
                        int table_column = start_column + column;
@@ -43,28 +82,64 @@ MidiChannelSelector::~MidiChannelSelector()
 {
 }
 
+bool
+MidiChannelSelector::was_clicked (GdkEventButton*)
+{
+        clicked ();
+        return false;
+}
+
+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_fg (STATE_NORMAL);
+                       _buttons[row][column].unset_fg (STATE_ACTIVE);
+                       _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];
+       ToggleButtonbutton = &_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)
-{      
+SingleMidiChannelSelector::button_toggled(ToggleButtonbutton, uint8_t channel)
+{
        ++_recursion_counter;
-       if(_recursion_counter == 1) {
-               // if the current button is active it must 
+       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) {
+               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
@@ -75,24 +150,25 @@ SingleMidiChannelSelector::button_toggled(ToggleButton *button, uint8_t channel)
        --_recursion_counter;
 }
 
-MidiMultipleChannelSelector::MidiMultipleChannelSelector(uint16_t initial_selection, int8_t force_channel)
-       : MidiChannelSelector(4, 6, 0, 0), _mode(FILTERING_MULTIPLE_CHANNELS)
+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));
-       
+                       sigc::bind(sigc::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));
-       
+                       sigc::bind(sigc::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));
-       
+                       sigc::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));
+                       sigc::mem_fun(this, &MidiMultipleChannelSelector::force_channels_button_toggled));
 
        set_homogeneous(false);
        attach(*manage(new VSeparator()), 4, 5, 0, 4, SHRINK, FILL, 0, 0);
@@ -101,72 +177,56 @@ MidiMultipleChannelSelector::MidiMultipleChannelSelector(uint16_t initial_select
        attach(_select_none,      5, 6, 1, 2);
        attach(_invert_selection, 5, 6, 2, 3);
        attach(_force_channel,    5, 6, 3, 4);
-       
-       set_selected_channels(initial_selection);
+
+       set_selected_channels(mask);
 }
 
 MidiMultipleChannelSelector::~MidiMultipleChannelSelector()
 {
-       selection_changed.clear();
-       force_channel_changed.clear();
+       mode_changed.clear();
 }
 
-const int8_t 
-MidiMultipleChannelSelector::get_force_channel() const
+void
+MidiMultipleChannelSelector::set_channel_mode(ChannelMode mode, uint16_t mask)
 {
-       if(_mode == FORCING_SINGLE_CHANNEL) {
-               for(int8_t i = 0; i < 16; i++) {
-                       const ToggleButton *button = &_buttons[i / 4][i % 4];
-                       if(button->get_active()) {
-                               return i;
-                       } 
+       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);
                }
-               
-               // this point should not be reached.
-               assert(false);
-       } 
-       
-       return -1;
-}
-
-void 
-MidiMultipleChannelSelector::set_force_channel(int8_t channel)
-{
-       if(channel < 0) {
-               // if forcing is already activated, deactivate
-               if(_mode == FORCING_SINGLE_CHANNEL) {
-                       _force_channel.toggled();
-               } 
-               // if not, nothing to do
-       } else {
-               // otherwise simulate activating force channels by pressing the
-               // two buttons the user would press
-               _force_channel.toggled();
-               _buttons[channel / 4][channel % 4].toggled();
        }
 }
 
-
-const uint16_t 
-MidiMultipleChannelSelector::get_selected_channels() const 
-{ 
+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()) {
+       for (uint16_t i = 0; i < 16; i++) {
+               const ToggleButtonbutton = &_buttons[i / 4][i % 4];
+               if (button->get_active()) {
                        selected_channels |= (1L << i);
-               } 
+               }
        }
-       
-       return selected_channels; 
+
+       return selected_channels;
 }
 
-void 
+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)) {
+       for (uint16_t i = 0; i < 16; i++) {
+               ToggleButtonbutton = &_buttons[i / 4][i % 4];
+               if (selected_channels & (1L << i)) {
                        button->set_active(true);
                } else {
                        button->set_active(false);
@@ -175,84 +235,659 @@ MidiMultipleChannelSelector::set_selected_channels(uint16_t selected_channels)
 }
 
 void
-MidiMultipleChannelSelector::button_toggled(ToggleButton *button, uint8_t channel)
+MidiMultipleChannelSelector::button_toggled(ToggleButton */*button*/, uint8_t channel)
 {
        ++_recursion_counter;
-       if(_recursion_counter == 1) {
-               if(_mode == FORCING_SINGLE_CHANNEL) {
+       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());
                }
-       
-               force_channel_changed.emit(get_force_channel());
-               selection_changed.emit(get_selected_channels());
        }
        --_recursion_counter;
 }
 
-void 
+void
 MidiMultipleChannelSelector::force_channels_button_toggled()
 {
-       if(_force_channel.get_active()) {
-               _mode = FORCING_SINGLE_CHANNEL;
+       if (_force_channel.get_active()) {
+               _channel_mode = ForceChannel;
                bool found_first_active = false;
                // leave only the first button enabled
-               for(int i = 0; i <= 15; i++) {
-                       ToggleButton *button = &_buttons[i / 4][i % 4];
-                       if(button->get_active()) {
-                               if(found_first_active) {
+               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) {
+
+               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);
-               force_channel_changed.emit(get_force_channel());
-               selection_changed.emit(get_selected_channels());
+               mode_changed.emit(_channel_mode, active_channel);
        } else {
-               _mode = FILTERING_MULTIPLE_CHANNELS;
+               _channel_mode = FilterChannels;
                _select_all.set_sensitive(true);
                _select_none.set_sensitive(true);
                _invert_selection.set_sensitive(true);
-               force_channel_changed.emit(get_force_channel());
-               selection_changed.emit(get_selected_channels());
+               mode_changed.emit(FilterChannels, get_selected_channels());
        }
 }
 
-void 
+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];
+       for (uint16_t i = 0; i < 16; i++) {
+               ToggleButtonbutton = &_buttons[i / 4][i % 4];
                button->set_active(on);
        }
        --_recursion_counter;
-       selection_changed.emit(get_selected_channels());
+       mode_changed.emit(_channel_mode, get_selected_channels());
 }
 
-void 
+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()) {
+       for (uint16_t i = 0; i < 16; i++) {
+               ToggleButtonbutton = &_buttons[i / 4][i % 4];
+               if (button->get_active()) {
                        button->set_active(false);
                } else {
                        button->set_active(true);
                }
        }
        --_recursion_counter;
-       selection_changed.emit(get_selected_channels());
+       mode_changed.emit(_channel_mode, get_selected_channels());
+}
+
+/*-----------------------------------------*/
+
+MidiChannelSelectorWindow::MidiChannelSelectorWindow (boost::shared_ptr<MidiTrack> mt)
+       : ArdourWindow (_("MIDI Channel Control"))
+       , track (mt)
+       , playback_all_button (playback_button_group, _("Playback all channels"))
+       , playback_filter_button (playback_button_group, _("Play only selected channels"))
+       , playback_force_button (playback_button_group, _("Use a single fixed channel for all playback"))
+       , capture_all_button (capture_button_group, _("Record all channels"))
+       , capture_filter_button (capture_button_group, _("Record only selected channels"))
+       , capture_force_button (capture_button_group, _("Force all channels to 1 channel"))
+       , last_drawn_capture_mode (AllChannels)
+       , last_drawn_playback_mode (AllChannels)
+{
+       build ();
+
+       playback_mode_changed ();
+       capture_mode_changed ();
+
+       playback_mask_changed ();
+       capture_mask_changed ();
+
+       track->playback_filter().ChannelMaskChanged.connect (*this, MISSING_INVALIDATOR, boost::bind (&MidiChannelSelectorWindow::playback_mask_changed, this), gui_context());
+       track->playback_filter().ChannelModeChanged.connect (*this, MISSING_INVALIDATOR, boost::bind (&MidiChannelSelectorWindow::playback_mode_changed, this), gui_context());
+       track->capture_filter().ChannelMaskChanged.connect (*this, MISSING_INVALIDATOR, boost::bind (&MidiChannelSelectorWindow::capture_mask_changed, this), gui_context());
+       track->capture_filter().ChannelModeChanged.connect (*this, MISSING_INVALIDATOR, boost::bind (&MidiChannelSelectorWindow::capture_mode_changed, this), gui_context());
+}
+
+MidiChannelSelectorWindow::~MidiChannelSelectorWindow()
+{
 }
 
+void
+MidiChannelSelectorWindow::build ()
+{
+       VBox* vpacker;
+       HBox* capture_controls;
+       HBox* playback_controls;
+        Button* b;
+        Label* l;
+
+        vpacker = manage (new VBox);
+        vpacker->set_spacing (6);
+        vpacker->set_border_width (12);
+
+       l = manage (new Label (string_compose (("<span size=\"larger\" weight=\"bold\">%1: %2</span>"), _("MIDI Channel Control"), track->name())));
+       l->set_use_markup (true);
+       l->set_alignment (0.5, 0.0);
+
+       vpacker->pack_start (*l, true, true);
+
+        l = manage (new Label (string_compose ("<span size=\"large\" weight=\"bold\">%1</span>", _("Inbound"))));
+       l->set_use_markup (true);
+        vpacker->pack_start (*l);
+
+
+       vpacker->pack_start (capture_all_button);
+       capture_all_button.signal_toggled().connect (sigc::bind (sigc::mem_fun (*this, &MidiChannelSelectorWindow::capture_mode_toggled), AllChannels));
+
+       vpacker->pack_start (capture_filter_button);
+       capture_filter_button.signal_toggled().connect (sigc::bind (sigc::mem_fun (*this, &MidiChannelSelectorWindow::capture_mode_toggled), FilterChannels));
+
+       vpacker->pack_start (capture_force_button);
+       capture_force_button.signal_toggled().connect (sigc::bind (sigc::mem_fun (*this, &MidiChannelSelectorWindow::capture_mode_toggled), ForceChannel));
+
+        vpacker->pack_start (capture_mask_box);
+
+       capture_controls = manage (new HBox);
+       capture_controls->set_spacing (6);
+
+        b = manage (new Button (_("All")));
+       Gtkmm2ext::UI::instance()->set_tip (*b, _("Click to enable recording all channels"));
+       capture_controls->pack_start (*b);
+       capture_mask_controls.push_back (b);
+       b->signal_clicked().connect (sigc::mem_fun (*this, &MidiChannelSelectorWindow::fill_capture_mask));
+        b = manage (new Button (_("None")));
+       Gtkmm2ext::UI::instance()->set_tip (*b, _("Click to disable recording all channels"));
+       capture_controls->pack_start (*b);
+       capture_mask_controls.push_back (b);
+       b->signal_clicked().connect (sigc::mem_fun (*this, &MidiChannelSelectorWindow::zero_capture_mask));
+        b = manage (new Button (_("Invert")));
+       Gtkmm2ext::UI::instance()->set_tip (*b, _("Click to invert currently selected recording channels"));
+       capture_controls->pack_start (*b);
+       capture_mask_controls.push_back (b);
+       b->signal_clicked().connect (sigc::mem_fun (*this, &MidiChannelSelectorWindow::invert_capture_mask));
+
+        vpacker->pack_start (*capture_controls);
+
+        l = manage (new Label (string_compose ("<span size=\"large\" weight=\"bold\">%1</span>", _("Playback"))));
+       l->set_use_markup (true);
+        vpacker->pack_start (*l);
+
+       vpacker->pack_start (playback_all_button);
+       playback_all_button.signal_toggled().connect (sigc::bind (sigc::mem_fun (*this, &MidiChannelSelectorWindow::playback_mode_toggled), AllChannels));
+
+       vpacker->pack_start (playback_filter_button);
+       playback_filter_button.signal_toggled().connect (sigc::bind (sigc::mem_fun (*this, &MidiChannelSelectorWindow::playback_mode_toggled), FilterChannels));
+
+       vpacker->pack_start (playback_force_button);
+       playback_force_button.signal_toggled().connect (sigc::bind (sigc::mem_fun (*this, &MidiChannelSelectorWindow::playback_mode_toggled), ForceChannel));
+
+       vpacker->pack_start (playback_mask_box);
+
+       playback_controls = manage (new HBox);
+       playback_controls->set_spacing (6);
+
+        b = manage (new Button (_("All")));
+       Gtkmm2ext::UI::instance()->set_tip (*b, _("Click to enable playback of all channels"));
+       playback_controls->pack_start (*b);
+       playback_mask_controls.push_back (b);
+       b->signal_clicked().connect (sigc::mem_fun (*this, &MidiChannelSelectorWindow::fill_playback_mask));
+        b = manage (new Button (_("None")));
+       Gtkmm2ext::UI::instance()->set_tip (*b, _("Click to disable playback of all channels"));
+       playback_controls->pack_start (*b);
+       playback_mask_controls.push_back (b);
+       b->signal_clicked().connect (sigc::mem_fun (*this, &MidiChannelSelectorWindow::zero_playback_mask));
+       b = manage (new Button (_("Invert")));
+       Gtkmm2ext::UI::instance()->set_tip (*b, _("Click to invert current selected playback channels"));
+       playback_controls->pack_start (*b);
+       playback_mask_controls.push_back (b);
+       b->signal_clicked().connect (sigc::mem_fun (*this, &MidiChannelSelectorWindow::invert_playback_mask));
+
+        vpacker->pack_start (*playback_controls);
+
+        add (*vpacker);
+}
+
+void
+MidiChannelSelectorWindow::fill_playback_mask ()
+{
+       if (track->get_playback_channel_mode() == FilterChannels) {
+               track->set_playback_channel_mask (0xffff);
+       }
+}
+
+void
+MidiChannelSelectorWindow::zero_playback_mask ()
+{
+       if (track->get_playback_channel_mode() == FilterChannels) {
+               track->set_playback_channel_mask (0);
+       }
+}
+
+void
+MidiChannelSelectorWindow::invert_playback_mask ()
+{
+       if (track->get_playback_channel_mode() == FilterChannels) {
+               track->set_playback_channel_mask (~track->get_playback_channel_mask());
+       }
+}
+
+void
+MidiChannelSelectorWindow::fill_capture_mask ()
+{
+       if (track->get_capture_channel_mode() == FilterChannels) {
+               track->set_capture_channel_mask (0xffff);
+       }
+}
+
+void
+MidiChannelSelectorWindow::zero_capture_mask ()
+{
+       if (track->get_capture_channel_mode() == FilterChannels) {
+               track->set_capture_channel_mask (0);
+       }
+}
+
+void
+MidiChannelSelectorWindow::invert_capture_mask ()
+{
+       if (track->get_capture_channel_mode() == FilterChannels) {
+               track->set_capture_channel_mask (~track->get_capture_channel_mask());
+       }
+}
+
+void
+MidiChannelSelectorWindow::set_playback_selected_channels (uint16_t mask)
+{
+       switch (track->get_playback_channel_mode()) {
+       case AllChannels:
+               /* they are insensitive, so we don't care */
+               break;
+
+       case FilterChannels:
+               for (uint16_t i = 0; i < 16; i++) {
+                       playback_buttons[i]->set_active ((1<<i) & mask);
+               }
+               break;
+
+       case ForceChannel:
+               /* only set the lowest set channel in the mask as active */
+               for (uint16_t i = 0; i < 16; i++) {
+                       playback_buttons[i]->set_active (i == (PBD::ffs (mask) - 1));
+               }
+               break;
+       }
+}
+
+void
+MidiChannelSelectorWindow::set_capture_selected_channels (uint16_t mask)
+{
+       switch (track->get_capture_channel_mode()) {
+       case AllChannels:
+               /* they are insensitive, so we don't care */
+               break;
+
+       case FilterChannels:
+               for (uint16_t i = 0; i < 16; i++) {
+                       capture_buttons[i]->set_active ((1<<i) & mask);
+               }
+               break;
+
+       case ForceChannel:
+               /* only set the lowest set channel in the mask as active */
+               for (uint16_t i = 0; i < 16; i++) {
+                       capture_buttons[i]->set_active (i == (PBD::ffs (mask) - 1));
+               }
+               break;
+       }
+}
+
+void
+MidiChannelSelectorWindow::playback_mask_changed ()
+{
+       set_playback_selected_channels (track->get_playback_channel_mask());
+}
+
+void
+MidiChannelSelectorWindow::capture_mask_changed ()
+{
+       set_capture_selected_channels (track->get_capture_channel_mask());
+}
+
+void
+MidiChannelSelectorWindow::playback_mode_changed ()
+{
+       uint32_t first_channel = 0;
+       ChannelMode mode = track->get_playback_channel_mode();
+
+       switch (mode) {
+       case AllChannels:
+               if (last_drawn_playback_mode == ForceChannel) {
+                       /* force mode used radio buttons. not what we want,
+                        * though one could argue that we want no buttons
+                        * at since they are insensitive
+                        */
+                       playback_buttons.clear ();
+               }
+               for (vector<Widget*>::iterator i = playback_mask_controls.begin(); i != playback_mask_controls.end(); ++i) {
+                       (*i)->set_sensitive (false);
+               }
+               playback_all_button.set_active ();
+               break;
+
+       case FilterChannels:
+               if (last_drawn_playback_mode == ForceChannel) {
+                       playback_buttons.clear ();
+               } else if (last_drawn_playback_mode == AllChannels) {
+                       for (vector<ToggleButton*>::iterator i = playback_buttons.begin(); i != playback_buttons.end(); ++i) {
+                               (*i)->set_sensitive (true);
+                       }
+               }
+               for (vector<Widget*>::iterator i = playback_mask_controls.begin(); i != playback_mask_controls.end(); ++i) {
+                       (*i)->set_sensitive (true);
+               }
+               playback_filter_button.set_active ();
+               break;
+
+       case ForceChannel:
+               if (last_drawn_playback_mode == AllChannels || last_drawn_playback_mode == FilterChannels) {
+                       playback_buttons.clear ();
+                       first_channel = PBD::ffs (track->get_playback_channel_mask()) - 1;
+               }
+               for (vector<Widget*>::iterator i = playback_mask_controls.begin(); i != playback_mask_controls.end(); ++i) {
+                       (*i)->set_sensitive (false);
+               }
+               playback_force_button.set_active ();
+               break;
+       }
+
+       if (playback_buttons.empty()) {
+
+               Gtkmm2ext::container_clear (playback_mask_box);
+
+               ToggleButton* tb;
+               RadioButtonGroup group;
+
+               for (uint32_t n = 0; n < 16; ++n) {
+                       char buf[3];
+                       snprintf (buf, sizeof (buf), "%d", n+1);
+
+                       switch (mode) {
+                       case AllChannels:
+                       case FilterChannels:
+                               tb = manage (new ToggleButton (buf));
+                               Gtkmm2ext::UI::instance()->set_tip (*tb, string_compose (_("Click to toggle playback of channel %1"), n+1));
+                               break;
+                       case ForceChannel:
+                               tb = manage (new RadioButton (group, buf));
+                               tb->property_draw_indicator() = false;
+                               if (n == first_channel) {
+                                       tb->set_active (true);
+                               }
+                               Gtkmm2ext::UI::instance()->set_tip (*tb, string_compose (_("Click to force all MIDI channel messages to channel %1"), n+1));
+                               break;
+                       }
+                       playback_buttons.push_back (tb);
+                       tb->set_name (X_("MidiChannelSelectorButton"));
+                       playback_mask_box.pack_start (*tb);
+                       tb->signal_toggled().connect (sigc::bind (sigc::mem_fun (*this, &MidiChannelSelectorWindow::playback_channel_clicked), n));
+                       tb->show ();
+
+                       if (mode == AllChannels) {
+                               tb->set_sensitive (false);
+                       }
+               }
+
+               if (mode != ForceChannel) {
+                       set_playback_selected_channels (track->get_playback_channel_mask());
+               }
+       }
+
+       if (mode == AllChannels) {
+               for (vector<ToggleButton*>::iterator i = playback_buttons.begin(); i != playback_buttons.end(); ++i) {
+                       (*i)->set_sensitive (false);
+               }
+       }
+
+       playback_mask_changed(); // update buttons
+
+       last_drawn_playback_mode = mode;
+}
+
+void
+MidiChannelSelectorWindow::capture_mode_changed ()
+{
+       uint32_t first_channel = 0;
+       ChannelMode mode = track->get_capture_channel_mode();
+
+       switch (mode) {
+       case AllChannels:
+               if (last_drawn_capture_mode == ForceChannel) {
+                       /* force mode used radio buttons. not what we want,
+                        * though one could argue that we want no buttons
+                        * at since they are insensitive
+                        */
+                       capture_buttons.clear ();
+               }
+               for (vector<Widget*>::iterator i = capture_mask_controls.begin(); i != capture_mask_controls.end(); ++i) {
+                       (*i)->set_sensitive (false);
+               }
+               capture_all_button.set_active ();
+               break;
+
+       case FilterChannels:
+               if (last_drawn_capture_mode == ForceChannel) {
+                       capture_buttons.clear ();
+               } else if (last_drawn_capture_mode == AllChannels) {
+                       for (vector<ToggleButton*>::iterator i = capture_buttons.begin(); i != capture_buttons.end(); ++i) {
+                               (*i)->set_sensitive (true);
+                       }
+               }
+               for (vector<Widget*>::iterator i = capture_mask_controls.begin(); i != capture_mask_controls.end(); ++i) {
+                       (*i)->set_sensitive (true);
+               }
+               capture_filter_button.set_active ();
+               break;
+
+       case ForceChannel:
+               if (last_drawn_capture_mode == AllChannels || last_drawn_capture_mode == FilterChannels) {
+                       capture_buttons.clear ();
+                       first_channel = PBD::ffs (track->get_capture_channel_mask()) - 1;
+               }
+               for (vector<Widget*>::iterator i = capture_mask_controls.begin(); i != capture_mask_controls.end(); ++i) {
+                       (*i)->set_sensitive (false);
+               }
+               capture_force_button.set_active ();
+               break;
+       }
+
+       if (capture_buttons.empty()) {
+
+               Gtkmm2ext::container_clear (capture_mask_box);
+
+               ToggleButton* tb;
+               RadioButtonGroup group;
+
+               for (uint32_t n = 0; n < 16; ++n) {
+                       char buf[3];
+                       snprintf (buf, sizeof (buf), "%d", n+1);
+
+                       switch (mode) {
+                       case AllChannels:
+                       case FilterChannels:
+                               tb = manage (new ToggleButton (buf));
+                               Gtkmm2ext::UI::instance()->set_tip (*tb, string_compose (_("Click to toggle recording of channel %1"), n+1));
+                               break;
+                       case ForceChannel:
+                               tb = manage (new RadioButton (group, buf));
+                               tb->property_draw_indicator() = false;
+                               if (n == first_channel) {
+                                       tb->set_active (true);
+                               }
+                               Gtkmm2ext::UI::instance()->set_tip (*tb, string_compose (_("Click to force all recorded channels to %1"), n+1));
+                               break;
+                       }
+                       capture_buttons.push_back (tb);
+                       tb->set_name (X_("MidiChannelSelectorButton"));
+                       capture_mask_box.pack_start (*tb);
+                       tb->signal_toggled().connect (sigc::bind (sigc::mem_fun (*this, &MidiChannelSelectorWindow::capture_channel_clicked), n));
+                       tb->show ();
+
+                       if (mode == AllChannels) {
+                               tb->set_sensitive (false);
+                       }
+               }
+
+               if (mode != ForceChannel) {
+                       set_capture_selected_channels (track->get_capture_channel_mask());
+               }
+       }
+
+       if (mode == AllChannels) {
+               for (vector<ToggleButton*>::iterator i = capture_buttons.begin(); i != capture_buttons.end(); ++i) {
+                       (*i)->set_sensitive (false);
+               }
+       }
+
+       capture_mask_changed (); // udpate buttons
+
+       last_drawn_capture_mode = mode;
+}
+
+void
+MidiChannelSelectorWindow::playback_channel_clicked (uint16_t n)
+{
+       if (playback_buttons[n]->get_active()) {
+               switch (track->get_playback_channel_mode()) {
+               case AllChannels:
+                       break;
+               case FilterChannels:
+                       track->set_playback_channel_mask (track->get_playback_channel_mask() | (1<<n));
+                       break;
+               case ForceChannel:
+                       track->set_playback_channel_mask (1<<n);
+                       break;
+               }
+       } else {
+               if (track->get_playback_channel_mode() == FilterChannels) {
+                       track->set_playback_channel_mask (track->get_playback_channel_mask() & ~(1<<n));
+               }
+       }
+}
+
+void
+MidiChannelSelectorWindow::capture_channel_clicked (uint16_t n)
+{
+       if (capture_buttons[n]->get_active()) {
+               switch (track->get_capture_channel_mode()) {
+               case AllChannels:
+                       break;
+               case FilterChannels:
+                       track->set_capture_channel_mask (track->get_capture_channel_mask() | (1<<n));
+                       break;
+               case ForceChannel:
+                       track->set_capture_channel_mask (1<<n);
+                       break;
+               }
+       } else {
+               if (track->get_capture_channel_mode() == FilterChannels) {
+                       track->set_capture_channel_mask (track->get_capture_channel_mask() & ~(1<<n));
+               }
+       }
+}
+
+void
+MidiChannelSelectorWindow::capture_mode_toggled (ChannelMode mode)
+{
+       /* this is called twice for every radio button change. the first time
+          is for the button/mode that has been turned off, and the second is for the
+          button/mode that has been turned on.
+
+          so we take action only if the button is active (i.e it is the one
+          just clicked on)
+       */
+
+       switch (mode) {
+       case AllChannels:
+               if (capture_all_button.get_active()) {
+                       track->set_capture_channel_mode (AllChannels, track->get_capture_channel_mask());
+               }
+               break;
+       case FilterChannels:
+               if (capture_filter_button.get_active()) {
+                       track->set_capture_channel_mode (FilterChannels, track->get_capture_channel_mask());
+               }
+               break;
+       case ForceChannel:
+               if (capture_force_button.get_active()) {
+                       track->set_capture_channel_mode (ForceChannel, track->get_capture_channel_mask());
+               }
+               break;
+       }
+}
+
+void
+MidiChannelSelectorWindow::playback_mode_toggled (ChannelMode mode)
+{
+       /* this is called twice for every radio button change. the first time
+          is for the button/mode that has been turned off, and the second is for the
+          button/mode that has been turned on.
+
+          so we take action only if the button is active (i.e it is the one
+          just clicked on)
+       */
+
+       switch (mode) {
+       case AllChannels:
+               if (playback_all_button.get_active()) {
+                       track->set_playback_channel_mode (AllChannels, track->get_playback_channel_mask());
+               }
+               break;
+       case FilterChannels:
+               if (playback_filter_button.get_active()) {
+                       track->set_playback_channel_mode (FilterChannels, track->get_playback_channel_mask());
+               }
+               break;
+       case ForceChannel:
+               if (playback_force_button.get_active()) {
+                       track->set_playback_channel_mode (ForceChannel, track->get_playback_channel_mask());
+               }
+               break;
+       }
+}
+
+void
+MidiChannelSelectorWindow::set_channel_colors (const uint32_t new_channel_colors[16])
+{
+       for (uint32_t n = 0; n < 16; ++n) {
+
+               char color_normal[8];
+               char color_active[8];
+
+               snprintf(color_normal, 8, "#%x", UINT_INTERPOLATE(new_channel_colors[n], 0x000000ff, 0.6));
+               snprintf(color_active, 8, "#%x", new_channel_colors[n]);
+
+               playback_buttons[n]->modify_bg(STATE_NORMAL, Gdk::Color(color_normal));
+               playback_buttons[n]->modify_bg(STATE_ACTIVE, Gdk::Color(color_active));
+
+               capture_buttons[n]->modify_bg(STATE_NORMAL, Gdk::Color(color_normal));
+               capture_buttons[n]->modify_bg(STATE_ACTIVE, Gdk::Color(color_active));
+       }
+}
+
+void
+MidiChannelSelectorWindow::set_default_channel_color()
+{
+       for (uint32_t n = 0; n < 16; ++n) {
+               playback_buttons[n]->unset_fg (STATE_NORMAL);
+               playback_buttons[n]->unset_bg (STATE_NORMAL);
+               playback_buttons[n]->unset_fg (STATE_ACTIVE);
+               playback_buttons[n]->unset_bg (STATE_ACTIVE);
+
+               capture_buttons[n]->unset_fg (STATE_NORMAL);
+               capture_buttons[n]->unset_bg (STATE_NORMAL);
+               capture_buttons[n]->unset_fg (STATE_ACTIVE);
+               capture_buttons[n]->unset_bg (STATE_ACTIVE);
+       }
+}