gtk2_ardour/gain_meter.cc

   1 /*
   2   Copyright (C) 2002 Paul Davis
   3
   4   This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation; either version 2 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program; if not, write to the Free Software
  16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <limits.h>
  21
  22 #include <ardour/io.h>
  23 #include <ardour/route.h>
  24 #include <ardour/route_group.h>
  25 #include <ardour/session.h>
  26 #include <ardour/session_route.h>
  27 #include <ardour/dB.h>
  28
  29 #include <gtkmm/style.h>
  30 #include <gdkmm/color.h>
  31 #include <gtkmm2ext/utils.h>
  32 #include <gtkmm2ext/fastmeter.h>
  33 #include <gtkmm2ext/stop_signal.h>
  34 #include <gtkmm2ext/barcontroller.h>
  35 #include <gtkmm2ext/gtk_ui.h>
  36 #include <midi++/manager.h>
  37 #include <pbd/fastlog.h>
  38
  39 #include "ardour_ui.h"
  40 #include "gain_meter.h"
  41 #include "utils.h"
  42 #include "logmeter.h"
  43 #include "gui_thread.h"
  44 #include "keyboard.h"
  45 #include "public_editor.h"
  46
  47 #include <ardour/session.h>
  48 #include <ardour/route.h>
  49 #include <ardour/meter.h>
  50
  51 #include "i18n.h"
  52
  53 using namespace ARDOUR;
  54 using namespace PBD;
  55 using namespace Gtkmm2ext;
  56 using namespace Gtk;
  57 using namespace sigc;
  58 using namespace std;
  59
  60 sigc::signal<void> GainMeter::ResetAllPeakDisplays;
  61 sigc::signal<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
  62 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
  63 Glib::RefPtr<Gdk::Pixbuf> GainMeter::rail;
  64 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  65
  66 int
  67 GainMeter::setup_slider_pix ()
  68 {
  69         slider = ::get_icon ("fader_belt");
  70         return 0;
  71 }
  72
  73 GainMeter::GainMeter (boost::shared_ptr<IO> io, Session& s)
  74         : _io (io),
  75           _session (s),
  76           gain_slider (0),
  77           // 0.781787 is the value needed for gain to be set to 0.
  78           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  79           gain_automation_style_button (""),
  80           gain_automation_state_button ("")
  81
  82 {
  83         if (slider == 0) {
  84                 setup_slider_pix ();
  85         }
  86
  87         ignore_toggle = false;
  88         meter_menu = 0;
  89         next_release_selects = false;
  90         style_changed = true;
  91
  92         gain_slider = manage (new VSliderController (slider,
  93                                                      &gain_adjustment,
  94                                                      *_io->gain_control().get(),
  95                                                      false));
  96
  97         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
  98         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
  99         gain_slider->set_name ("GainFader");
 100
 101         gain_display.set_name ("MixerStripGainDisplay");
 102         gain_display.set_has_frame (false);
 103         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 104         gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
 105         gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 106         gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 107
 108         gain_display_box.set_name ("MeterMetricsStrip");
 109         gain_display_box.set_homogeneous (true);
 110         gain_display_box.set_spacing (2);
 111         gain_display_box.pack_start (gain_display, true, true);
 112
 113         peak_display.set_name ("MixerStripPeakDisplay");
 114 //      peak_display.set_has_frame (false);
 115 //      peak_display.set_editable (false);
 116         set_size_request_to_display_given_text  (peak_display, "-80.g", 2, 6); /* note the descender */
 117         max_peak = minus_infinity();
 118         peak_display.set_label (_("-inf"));
 119         peak_display.unset_flags (Gtk::CAN_FOCUS);
 120
 121         meter_metric_area.set_name ("MeterMetricsStrip");
 122         set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
 123
 124         meter_packer.set_spacing (2);
 125
 126         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 127         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 128
 129         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
 130         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
 131
 132         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 133         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 134
 135         gain_automation_state_button.set_size_request(15, 15);
 136         gain_automation_style_button.set_size_request(15, 15);
 137
 138         HBox* fader_centering_box = manage (new HBox);
 139         fader_centering_box->pack_start (*gain_slider, true, false);
 140
 141         fader_vbox = manage (new Gtk::VBox());
 142         fader_vbox->set_spacing (0);
 143         fader_vbox->pack_start (*fader_centering_box, false, false, 0);
 144
 145         hbox.set_spacing (2);
 146
 147         if (_io->default_type() == ARDOUR::DataType::AUDIO) {
 148                 hbox.pack_start (*fader_vbox, true, true);
 149         }
 150
 151         set_width (Narrow);
 152
 153         Route* r;
 154
 155         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 156
 157                 /*
 158                    if we have a route (ie. we're not the click),
 159                    pack some route-dependent stuff.
 160                 */
 161
 162                 gain_display_box.pack_end (peak_display, true, true);
 163
 164                 hbox.pack_end (meter_packer, true, true);
 165
 166                 using namespace Menu_Helpers;
 167
 168                 gain_astate_menu.items().push_back (MenuElem (_("Manual"),
 169                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 170                                                                   Parameter(GainAutomation), (AutoState) Off)));
 171                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 172                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 173                                                                   Parameter(GainAutomation), (AutoState) Play)));
 174                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 175                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 176                                                                   Parameter(GainAutomation), (AutoState) Write)));
 177                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 178                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 179                                                                   Parameter(GainAutomation), (AutoState) Touch)));
 180
 181                 gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 182                 gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 183
 184                 gain_astate_menu.set_name ("ArdourContextMenu");
 185                 gain_astyle_menu.set_name ("ArdourContextMenu");
 186
 187                 gain_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_style_button_event), false);
 188                 gain_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_state_button_event), false);
 189
 190                 r->gain_control()->list()->automation_state_changed.connect (mem_fun(*this, &GainMeter::gain_automation_state_changed));
 191                 r->gain_control()->list()->automation_style_changed.connect (mem_fun(*this, &GainMeter::gain_automation_style_changed));
 192                 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 193
 194                 gain_automation_state_changed ();
 195         }
 196
 197         set_spacing (2);
 198
 199         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 200         pack_start (hbox, Gtk::PACK_SHRINK);
 201
 202         _io->gain_control()->Changed.connect (mem_fun(*this, &GainMeter::gain_changed));
 203
 204         meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 205         gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeter::gain_adjusted));
 206         peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeter::peak_button_release), false);
 207         gain_display.signal_key_press_event().connect (mem_fun(*this, &GainMeter::gain_key_press), false);
 208
 209         Config->ParameterChanged.connect (mem_fun (*this, &GainMeter::parameter_changed));
 210
 211         gain_changed ();
 212         show_gain ();
 213
 214         update_gain_sensitive ();
 215
 216         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 217         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 218
 219         UI::instance()->theme_changed.connect (mem_fun(*this, &GainMeter::on_theme_changed));
 220
 221         gain_display.show();
 222         peak_display.show();
 223         gain_display_box.show();
 224         fader_box.show();
 225         meter_metric_area.show();
 226 }
 227
 228 void
 229 GainMeter::set_width (Width w)
 230 {
 231         switch (w) {
 232         case Wide:
 233                 peak_display.show();
 234                 break;
 235         case Narrow:
 236                 peak_display.hide();
 237                 break;
 238         }
 239
 240         _width = w;
 241         setup_meters ();
 242 }
 243
 244 Glib::RefPtr<Gdk::Pixmap>
 245 GainMeter::render_metrics (Gtk::Widget& w)
 246 {
 247         //cerr << "GainMeter::render_metrics() called, red = " << w.get_style()->get_bg(Gtk::STATE_NORMAL).get_red() << endl;//DEBUG
 248         Glib::RefPtr<Gdk::Window> win (w.get_window());
 249         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 250         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 251         gint width, height;
 252         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 253         char buf[32];
 254
 255         win->get_size (width, height);
 256
 257         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 258
 259         metric_pixmaps[w.get_name()] = pixmap;
 260
 261         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 262
 263         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 264
 265         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 266
 267                 float fraction = log_meter (db_points[i]);
 268                 gint pos = height - (gint) floor (height * fraction);
 269
 270                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 271
 272                 layout->set_text (buf);
 273
 274                 /* we want logical extents, not ink extents here */
 275
 276                 int width, height;
 277                 layout->get_pixel_size (width, height);
 278
 279                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 280                 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
 281         }
 282
 283         return pixmap;
 284 }
 285
 286 gint
 287 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 288 {
 289         /* Only draw dB scale if we're metering audio */
 290         if (_io->n_inputs().n_audio() + _io->n_outputs().n_audio() == 0)
 291                 return true;
 292
 293         static Glib::RefPtr<Gtk::Style> meter_style;
 294
 295         if (style_changed) {
 296                 meter_style = meter_metric_area.get_style();
 297         }
 298
 299         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 300         Glib::RefPtr<Gdk::GC> fg_gc (meter_style->get_fg_gc (Gtk::STATE_NORMAL));
 301         Glib::RefPtr<Gdk::GC> bg_gc (meter_style->get_bg_gc (Gtk::STATE_NORMAL));
 302
 303         GdkRectangle base_rect;
 304         GdkRectangle draw_rect;
 305         gint width, height;
 306
 307         win->get_size (width, height);
 308
 309         base_rect.width = width;
 310         base_rect.height = height;
 311         base_rect.x = 0;
 312         base_rect.y = 0;
 313
 314         Glib::RefPtr<Gdk::Pixmap> pixmap;
 315         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 316
 317         if (i == metric_pixmaps.end() || style_changed) {
 318                 pixmap = render_metrics (meter_metric_area);
 319         } else {
 320                 pixmap = i->second;
 321         }
 322
 323         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 324         win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 325         win->draw_drawable (fg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 326
 327         style_changed = false;
 328         return true;
 329 }
 330
 331 void
 332 GainMeter::on_theme_changed()
 333 {
 334         style_changed = true;
 335 }
 336
 337 GainMeter::~GainMeter ()
 338 {
 339         if (meter_menu) {
 340                 delete meter_menu;
 341         }
 342
 343         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 344                 if ((*i).meter) {
 345                         delete (*i).meter;
 346                 }
 347         }
 348 }
 349
 350 void
 351 GainMeter::update_meters ()
 352 {
 353         vector<MeterInfo>::iterator i;
 354         uint32_t n;
 355         float peak, mpeak;
 356         char buf[32];
 357
 358         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 359                 if ((*i).packed) {
 360                         peak = _io->peak_meter().peak_power (n);
 361
 362                         (*i).meter->set (log_meter (peak));
 363
 364                         mpeak = _io->peak_meter().max_peak_power(n);
 365
 366                         if (mpeak > max_peak) {
 367                                 max_peak = mpeak;
 368                                 /* set peak display */
 369                                 if (max_peak <= -200.0f) {
 370                                         peak_display.set_label (_("-inf"));
 371                                 } else {
 372                                         snprintf (buf, sizeof(buf), "%.1f", max_peak);
 373                                         peak_display.set_label (buf);
 374                                 }
 375
 376                                 if (max_peak >= 0.0f) {
 377                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 378                                 }
 379                         }
 380                 }
 381         }
 382 }
 383
 384 void
 385 GainMeter::parameter_changed(const char* parameter_name)
 386 {
 387 #define PARAM_IS(x) (!strcmp (parameter_name, (x)))
 388
 389         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::parameter_changed), parameter_name));
 390
 391         if (PARAM_IS ("meter-hold")) {
 392
 393                 vector<MeterInfo>::iterator i;
 394                 uint32_t n;
 395
 396                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 397
 398                         (*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
 399                 }
 400         }
 401
 402 #undef PARAM_IS
 403 }
 404
 405 void
 406 GainMeter::hide_all_meters ()
 407 {
 408         bool remove_metric_area = false;
 409
 410         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 411                 if ((*i).packed) {
 412                         remove_metric_area = true;
 413                         meter_packer.remove (*((*i).meter));
 414                         (*i).packed = false;
 415                 }
 416         }
 417
 418         if (remove_metric_area) {
 419                 if (meter_metric_area.get_parent()) {
 420                         meter_packer.remove (meter_metric_area);
 421                 }
 422         }
 423 }
 424
 425 void
 426 GainMeter::setup_meters ()
 427 {
 428         uint32_t nmeters = _io->n_outputs().n_total();
 429         guint16 width;
 430
 431         hide_all_meters ();
 432
 433         Route* r;
 434
 435         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 436
 437                 switch (r->meter_point()) {
 438                 case MeterInput:
 439                         nmeters = r->n_inputs().n_total();
 440                         break;
 441                 case MeterPreFader:
 442                         nmeters = r->pre_fader_streams().n_total();
 443                         break;
 444                 case MeterPostFader:
 445                         nmeters = r->n_outputs().n_total();
 446                         break;
 447                 }
 448
 449         } else {
 450
 451                 nmeters = _io->n_outputs().n_total();
 452
 453         }
 454
 455         if (nmeters == 0) {
 456                 return;
 457         }
 458
 459         if (nmeters <= 2) {
 460                 width = regular_meter_width;
 461         } else {
 462                 width = thin_meter_width;
 463         }
 464
 465         while (meters.size() < nmeters) {
 466                 meters.push_back (MeterInfo());
 467         }
 468
 469         /* pack them backwards */
 470
 471         if (_width == Wide) {
 472                 meter_packer.pack_end (meter_metric_area, false, false);
 473                 meter_metric_area.show_all ();
 474         }
 475
 476         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 477                 if (meters[n].width != width) {
 478                         delete meters[n].meter;
 479                         meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical);
 480                         meters[n].width = width;
 481
 482                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 483                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 484                 }
 485
 486                 meter_packer.pack_end (*meters[n].meter, false, false);
 487                 meters[n].meter->show_all ();
 488                 meters[n].packed = true;
 489         }
 490 }
 491
 492 int
 493 GainMeter::get_gm_width ()
 494 {
 495         Gtk::Requisition sz = hbox.size_request ();
 496         return sz.width;
 497 }
 498
 499 bool
 500 GainMeter::gain_key_press (GdkEventKey* ev)
 501 {
 502         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 503                 /* drop through to normal handling */
 504                 return false;
 505         }
 506         /* illegal key for gain entry */
 507         return true;
 508 }
 509
 510 bool
 511 GainMeter::peak_button_release (GdkEventButton* ev)
 512 {
 513         /* reset peak label */
 514
 515         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
 516                 ResetAllPeakDisplays ();
 517         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 518                 Route* r;
 519                 if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 520                         ResetGroupPeakDisplays (r->mix_group());
 521                 }
 522         } else {
 523                 reset_peak_display ();
 524         }
 525
 526         return true;
 527 }
 528
 529 void
 530 GainMeter::reset_peak_display ()
 531 {
 532         Route * r;
 533         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 534                 r->peak_meter().reset_max();
 535         }
 536
 537         max_peak = -INFINITY;
 538         peak_display.set_label (_("-Inf"));
 539         peak_display.set_name ("MixerStripPeakDisplay");
 540 }
 541
 542 void
 543 GainMeter::reset_group_peak_display (RouteGroup* group)
 544 {
 545         Route* r;
 546         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 547                 if (group == r->mix_group()) {
 548                         reset_peak_display ();
 549                 }
 550         }
 551 }
 552
 553 gint
 554 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 555 {
 556         switch (ev->button) {
 557         case 1:
 558                 meters[which].meter->clear();
 559                 max_peak = minus_infinity();
 560                 peak_display.set_label (_("-inf"));
 561                 peak_display.set_name ("MixerStripPeakDisplay");
 562                 break;
 563
 564         case 3:
 565                 // popup_meter_menu (ev);
 566                 break;
 567         };
 568
 569         return TRUE;
 570 }
 571
 572 void
 573 GainMeter::popup_meter_menu (GdkEventButton *ev)
 574 {
 575         using namespace Menu_Helpers;
 576
 577         if (meter_menu == 0) {
 578                 meter_menu = new Gtk::Menu;
 579                 MenuList& items = meter_menu->items();
 580
 581                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 582                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 583                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 584                 items.push_back (SeparatorElem());
 585                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 586                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 587                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 588         }
 589
 590         meter_menu->popup (1, ev->time);
 591 }
 592
 593 bool
 594 GainMeter::gain_focused (GdkEventFocus* ev)
 595 {
 596         if (ev->in) {
 597                 gain_display.select_region (0, -1);
 598         } else {
 599                 gain_display.select_region (0, 0);
 600         }
 601         return false;
 602 }
 603
 604 void
 605 GainMeter::gain_activated ()
 606 {
 607         float f;
 608
 609         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 610
 611                 /* clamp to displayable values */
 612
 613                 f = min (f, 6.0f);
 614
 615                 _io->gain_control()->set_value (dB_to_coefficient(f));
 616
 617                 if (gain_display.has_focus()) {
 618                         PublicEditor::instance().reset_focus();
 619                 }
 620         }
 621 }
 622
 623 void
 624 GainMeter::show_gain ()
 625 {
 626         char buf[32];
 627
 628         float v = gain_adjustment.get_value();
 629
 630         if (v == 0.0) {
 631                 strcpy (buf, _("-inf"));
 632         } else {
 633                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 634         }
 635
 636         gain_display.set_text (buf);
 637 }
 638
 639 void
 640 GainMeter::gain_adjusted ()
 641 {
 642         if (!ignore_toggle) {
 643                 _io->gain_control()->set_value (slider_position_to_gain (gain_adjustment.get_value()));
 644         }
 645         show_gain ();
 646 }
 647
 648 void
 649 GainMeter::effective_gain_display ()
 650 {
 651         gfloat value = gain_to_slider_position (_io->effective_gain());
 652
 653         if (gain_adjustment.get_value() != value) {
 654                 ignore_toggle = true;
 655                 gain_adjustment.set_value (value);
 656                 ignore_toggle = false;
 657         }
 658 }
 659
 660 void
 661 GainMeter::gain_changed ()
 662 {
 663         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 664 }
 665
 666 void
 667 GainMeter::set_meter_strip_name (const char * name)
 668 {
 669         meter_metric_area.set_name (name);
 670 }
 671
 672 void
 673 GainMeter::set_fader_name (const char * name)
 674 {
 675         gain_slider->set_name (name);
 676 }
 677
 678 void
 679 GainMeter::update_gain_sensitive ()
 680 {
 681         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io->gain_control()->list()->automation_state() & Play));
 682 }
 683
 684
 685 static MeterPoint
 686 next_meter_point (MeterPoint mp)
 687 {
 688         switch (mp) {
 689         case MeterInput:
 690                 return MeterPreFader;
 691                 break;
 692
 693         case MeterPreFader:
 694                 return MeterPostFader;
 695                 break;
 696
 697         case MeterPostFader:
 698                 return MeterInput;
 699                 break;
 700         }
 701         /*NOTREACHED*/
 702         return MeterInput;
 703 }
 704
 705 gint
 706 GainMeter::meter_press(GdkEventButton* ev)
 707 {
 708         Route* _route;
 709
 710         wait_for_release = false;
 711
 712         if ((_route = dynamic_cast<Route*>(_io.get())) == 0) {
 713                 return FALSE;
 714         }
 715
 716         if (!ignore_toggle) {
 717
 718                 if (Keyboard::is_context_menu_event (ev)) {
 719
 720                         // no menu at this time.
 721
 722                 } else {
 723
 724                         if (ev->button == 2) {
 725
 726                                 // ctrl-button2 click is the midi binding click
 727                                 // button2-click is "momentary"
 728
 729                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
 730                                         wait_for_release = true;
 731                                         old_meter_point = _route->meter_point ();
 732                                 }
 733                         }
 734
 735                         if (ev->button == 1 || ev->button == 2) {
 736
 737                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
 738
 739                                         /* ctrl-shift-click applies change to all routes */
 740
 741                                         _session.begin_reversible_command (_("meter point change"));
 742                                         Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 743                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 744                                         cmd->mark();
 745                                         _session.add_command (cmd);
 746                                         _session.commit_reversible_command ();
 747
 748
 749                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 750
 751                                         /* ctrl-click: solo mix group.
 752                                            ctrl-button2 is MIDI learn.
 753                                         */
 754
 755                                         if (ev->button == 1) {
 756                                                 _session.begin_reversible_command (_("meter point change"));
 757                                                 Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 758                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 759                                                 cmd->mark();
 760                                                 _session.add_command (cmd);
 761                                                 _session.commit_reversible_command ();
 762                                         }
 763
 764                                 } else {
 765
 766                                         /* click: change just this route */
 767
 768                                         // XXX no undo yet
 769
 770                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 771                                 }
 772                         }
 773                 }
 774         }
 775
 776         return true;
 777
 778 }
 779
 780 gint
 781 GainMeter::meter_release(GdkEventButton* ev)
 782 {
 783
 784         if(!ignore_toggle){
 785                 if (wait_for_release){
 786                         wait_for_release = false;
 787                         set_meter_point (*(dynamic_cast<Route*>(_io.get())), old_meter_point);
 788                 }
 789         }
 790         return true;
 791 }
 792
 793 void
 794 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 795 {
 796         route.set_meter_point (mp, this);
 797 }
 798
 799 void
 800 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 801 {
 802         RouteGroup* mix_group;
 803
 804         if((mix_group = route.mix_group()) != 0){
 805                 mix_group->apply (&Route::set_meter_point, mp, this);
 806         } else {
 807                 route.set_meter_point (mp, this);
 808         }
 809 }
 810
 811 void
 812 GainMeter::meter_point_clicked ()
 813 {
 814         Route* r;
 815
 816         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 817
 818         }
 819 }
 820
 821 gint
 822 GainMeter::start_gain_touch (GdkEventButton* ev)
 823 {
 824         _io->gain_control()->list()->start_touch ();
 825         return FALSE;
 826 }
 827
 828 gint
 829 GainMeter::end_gain_touch (GdkEventButton* ev)
 830 {
 831         _io->gain_control()->list()->stop_touch ();
 832         return FALSE;
 833 }
 834
 835 gint
 836 GainMeter::gain_automation_state_button_event (GdkEventButton *ev)
 837 {
 838         if (ev->type == GDK_BUTTON_RELEASE) {
 839                 return TRUE;
 840         }
 841
 842         switch (ev->button) {
 843                 case 1:
 844                         gain_astate_menu.popup (1, ev->time);
 845                         break;
 846                 default:
 847                         break;
 848         }
 849
 850         return TRUE;
 851 }
 852
 853 gint
 854 GainMeter::gain_automation_style_button_event (GdkEventButton *ev)
 855 {
 856         if (ev->type == GDK_BUTTON_RELEASE) {
 857                 return TRUE;
 858         }
 859
 860         switch (ev->button) {
 861         case 1:
 862                 gain_astyle_menu.popup (1, ev->time);
 863                 break;
 864         default:
 865                 break;
 866         }
 867         return TRUE;
 868 }
 869
 870 string
 871 GainMeter::astate_string (AutoState state)
 872 {
 873         return _astate_string (state, false);
 874 }
 875
 876 string
 877 GainMeter::short_astate_string (AutoState state)
 878 {
 879         return _astate_string (state, true);
 880 }
 881
 882 string
 883 GainMeter::_astate_string (AutoState state, bool shrt)
 884 {
 885         string sstr;
 886
 887         switch (state) {
 888         case Off:
 889                 sstr = (shrt ? "M" : _("M"));
 890                 break;
 891         case Play:
 892                 sstr = (shrt ? "P" : _("P"));
 893                 break;
 894         case Touch:
 895                 sstr = (shrt ? "T" : _("T"));
 896                 break;
 897         case Write:
 898                 sstr = (shrt ? "W" : _("W"));
 899                 break;
 900         }
 901
 902         return sstr;
 903 }
 904
 905 string
 906 GainMeter::astyle_string (AutoStyle style)
 907 {
 908         return _astyle_string (style, false);
 909 }
 910
 911 string
 912 GainMeter::short_astyle_string (AutoStyle style)
 913 {
 914         return _astyle_string (style, true);
 915 }
 916
 917 string
 918 GainMeter::_astyle_string (AutoStyle style, bool shrt)
 919 {
 920         if (style & Trim) {
 921                 return _("Trim");
 922         } else {
 923                 /* XXX it might different in different languages */
 924
 925                 return (shrt ? _("Abs") : _("Abs"));
 926         }
 927 }
 928
 929 void
 930 GainMeter::gain_automation_style_changed ()
 931 {
 932   // Route* _route = dynamic_cast<Route*>(&_io);
 933         switch (_width) {
 934         case Wide:
 935                 gain_automation_style_button.set_label (astyle_string(_io->gain_control()->list()->automation_style()));
 936                 break;
 937         case Narrow:
 938                 gain_automation_style_button.set_label  (short_astyle_string(_io->gain_control()->list()->automation_style()));
 939                 break;
 940         }
 941 }
 942
 943 void
 944 GainMeter::gain_automation_state_changed ()
 945 {
 946         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::gain_automation_state_changed));
 947         //Route* _route = dynamic_cast<Route*>(&_io);
 948
 949         bool x;
 950
 951         switch (_width) {
 952         case Wide:
 953                 gain_automation_state_button.set_label (astate_string(_io->gain_control()->list()->automation_state()));
 954                 break;
 955         case Narrow:
 956                 gain_automation_state_button.set_label (short_astate_string(_io->gain_control()->list()->automation_state()));
 957                 break;
 958         }
 959
 960         x = (_io->gain_control()->list()->automation_state() != Off);
 961
 962         if (gain_automation_state_button.get_active() != x) {
 963                 ignore_toggle = true;
 964                 gain_automation_state_button.set_active (x);
 965                 ignore_toggle = false;
 966         }
 967
 968         update_gain_sensitive ();
 969
 970         /* start watching automation so that things move */
 971
 972         gain_watching.disconnect();
 973
 974         if (x) {
 975                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeter::effective_gain_display));
 976         }
 977 }