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           regular_meter_width(5)
  82
  83 {
  84         if (slider == 0) {
  85                 setup_slider_pix ();
  86         }
  87
  88         ignore_toggle = false;
  89         meter_menu = 0;
  90         next_release_selects = false;
  91         style_changed = true;
  92
  93         gain_slider = manage (new VSliderController (slider,
  94                                                      &gain_adjustment,
  95                                                      *_io->gain_control().get(),
  96                                                      false));
  97
  98         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
  99         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
 100         gain_slider->set_name ("GainFader");
 101
 102         gain_display.set_name ("MixerStripGainDisplay");
 103         gain_display.set_has_frame (false);
 104         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 105         gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
 106         gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 107         gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 108
 109         gain_display_box.set_name ("MeterMetricsStrip");
 110         gain_display_box.set_homogeneous (true);
 111         gain_display_box.set_spacing (2);
 112         gain_display_box.pack_start (gain_display, true, true);
 113
 114         peak_display.set_name ("MixerStripPeakDisplay");
 115 //      peak_display.set_has_frame (false);
 116 //      peak_display.set_editable (false);
 117         set_size_request_to_display_given_text  (peak_display, "-80.g", 2, 6); /* note the descender */
 118         max_peak = minus_infinity();
 119         peak_display.set_label (_("-inf"));
 120         peak_display.unset_flags (Gtk::CAN_FOCUS);
 121
 122         meter_metric_area.set_name ("MeterMetricsStrip");
 123         set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
 124
 125         meter_packer.set_spacing (2);
 126
 127         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 128         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 129
 130         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
 131         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
 132
 133         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 134         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 135
 136         gain_automation_state_button.set_size_request(15, 15);
 137         gain_automation_style_button.set_size_request(15, 15);
 138
 139         HBox* fader_centering_box = manage (new HBox);
 140         fader_centering_box->pack_start (*gain_slider, true, false);
 141
 142         fader_vbox = manage (new Gtk::VBox());
 143         fader_vbox->set_spacing (0);
 144         fader_vbox->pack_start (*fader_centering_box, false, false, 0);
 145
 146         hbox.set_spacing (2);
 147
 148         if (_io->default_type() == ARDOUR::DataType::AUDIO) {
 149                 hbox.pack_start (*fader_vbox, true, true);
 150         }
 151
 152         set_width (Narrow);
 153
 154         Route* r;
 155
 156         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 157
 158                 /*
 159                    if we have a non-hidden route (ie. we're not the click or the auditioner),
 160                    pack some route-dependent stuff.
 161                 */
 162
 163                 gain_display_box.pack_end (peak_display, true, true);
 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         ColorsChanged.connect (bind (mem_fun (*this, &GainMeter::color_handler), false));
 222         DPIReset.connect (bind (mem_fun (*this, &GainMeter::color_handler), true));
 223
 224         //hide_all();
 225 }
 226
 227 void
 228 GainMeter::set_width (Width w, int len)
 229 {
 230         _width = w;
 231         setup_meters (len);
 232 }
 233
 234 Glib::RefPtr<Gdk::Pixmap>
 235 GainMeter::render_metrics (Gtk::Widget& w)
 236 {
 237         //cerr << "GainMeter::render_metrics() called, red = " << w.get_style()->get_bg(Gtk::STATE_NORMAL).get_red() << endl;//DEBUG
 238         Glib::RefPtr<Gdk::Window> win (w.get_window());
 239         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 240         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 241         gint width, height;
 242         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 243         char buf[32];
 244
 245         win->get_size (width, height);
 246
 247         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 248
 249         metric_pixmaps[w.get_name()] = pixmap;
 250
 251         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 252
 253         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 254
 255         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 256
 257                 float fraction = log_meter (db_points[i]);
 258                 gint pos = height - (gint) floor (height * fraction);
 259
 260                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 261
 262                 layout->set_text (buf);
 263
 264                 /* we want logical extents, not ink extents here */
 265
 266                 int width, height;
 267                 layout->get_pixel_size (width, height);
 268
 269                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 270                 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
 271         }
 272
 273         return pixmap;
 274 }
 275
 276 gint
 277 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 278 {
 279         /* Only draw dB scale if we're metering audio */
 280         if (_io->n_inputs().n_audio() + _io->n_outputs().n_audio() == 0)
 281                 return true;
 282
 283         static Glib::RefPtr<Gtk::Style> meter_style;
 284
 285         if (style_changed) {
 286                 meter_style = meter_metric_area.get_style();
 287         }
 288
 289         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 290         Glib::RefPtr<Gdk::GC> fg_gc (meter_style->get_fg_gc (Gtk::STATE_NORMAL));
 291         Glib::RefPtr<Gdk::GC> bg_gc (meter_style->get_bg_gc (Gtk::STATE_NORMAL));
 292
 293         GdkRectangle base_rect;
 294         GdkRectangle draw_rect;
 295         gint width, height;
 296
 297         win->get_size (width, height);
 298
 299         base_rect.width = width;
 300         base_rect.height = height;
 301         base_rect.x = 0;
 302         base_rect.y = 0;
 303
 304         Glib::RefPtr<Gdk::Pixmap> pixmap;
 305         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 306
 307         if (i == metric_pixmaps.end() || style_changed || dpi_changed) {
 308                 pixmap = render_metrics (meter_metric_area);
 309         } else {
 310                 pixmap = i->second;
 311         }
 312
 313         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 314         win->draw_rectangle (bg_gc, false, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 315         win->draw_drawable (fg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 316
 317         style_changed = false;
 318         return true;
 319 }
 320
 321 void
 322 GainMeter::on_theme_changed()
 323 {
 324         style_changed = true;
 325 }
 326
 327 GainMeter::~GainMeter ()
 328 {
 329         if (meter_menu) {
 330                 delete meter_menu;
 331         }
 332
 333         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 334                 if ((*i).meter) {
 335                         delete (*i).meter;
 336                 }
 337         }
 338 }
 339
 340 void
 341 GainMeter::update_meters ()
 342 {
 343         vector<MeterInfo>::iterator i;
 344         uint32_t n;
 345         float peak, mpeak;
 346         char buf[32];
 347
 348         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 349                 if ((*i).packed) {
 350                         peak = _io->peak_meter().peak_power (n);
 351
 352                         (*i).meter->set (log_meter (peak));
 353
 354                         mpeak = _io->peak_meter().max_peak_power(n);
 355
 356                         if (mpeak > max_peak) {
 357                                 max_peak = mpeak;
 358                                 /* set peak display */
 359                                 if (max_peak <= -200.0f) {
 360                                         peak_display.set_label (_("-inf"));
 361                                 } else {
 362                                         snprintf (buf, sizeof(buf), "%.1f", max_peak);
 363                                         peak_display.set_label (buf);
 364                                 }
 365
 366                                 if (max_peak >= 0.0f) {
 367                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 368                                 }
 369                         }
 370                 }
 371         }
 372 }
 373
 374 void
 375 GainMeter::parameter_changed(const char* parameter_name)
 376 {
 377 #define PARAM_IS(x) (!strcmp (parameter_name, (x)))
 378
 379         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::parameter_changed), parameter_name));
 380
 381         if (PARAM_IS ("meter-hold")) {
 382
 383                 vector<MeterInfo>::iterator i;
 384                 uint32_t n;
 385
 386                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 387
 388                         (*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
 389                 }
 390         }
 391
 392 #undef PARAM_IS
 393 }
 394
 395 void
 396 GainMeter::hide_all_meters ()
 397 {
 398         bool remove_metric_area = false;
 399
 400         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 401                 if ((*i).packed) {
 402                         remove_metric_area = true;
 403                         meter_packer.remove (*((*i).meter));
 404                         (*i).packed = false;
 405                 }
 406         }
 407
 408         if (remove_metric_area) {
 409                 if (meter_metric_area.get_parent()) {
 410                         meter_packer.remove (meter_metric_area);
 411                 }
 412         }
 413 }
 414
 415 void
 416 GainMeter::setup_meters (int len)
 417 {
 418         uint32_t nmeters = _io->n_outputs().n_total();
 419         guint16 width;
 420
 421         hide_all_meters ();
 422
 423         Route* r;
 424
 425         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 426
 427                 switch (r->meter_point()) {
 428                 case MeterInput:
 429                         nmeters = r->n_inputs().n_total();
 430                         break;
 431                 case MeterPreFader:
 432                         nmeters = r->pre_fader_streams().n_total();
 433                         break;
 434                 case MeterPostFader:
 435                         nmeters = r->n_outputs().n_total();
 436                         break;
 437                 }
 438
 439         } else {
 440
 441                 nmeters = _io->n_outputs().n_total();
 442
 443         }
 444
 445         if (nmeters == 0) {
 446                 return;
 447         }
 448
 449         if (nmeters <= 2) {
 450                 width = regular_meter_width;
 451         } else {
 452                 width = thin_meter_width;
 453         }
 454
 455         while (meters.size() < nmeters) {
 456                 meters.push_back (MeterInfo());
 457         }
 458
 459         /* pack them backwards */
 460
 461         meter_packer.pack_end (meter_metric_area, false, false);
 462         meter_metric_area.show_all ();
 463
 464         int b = ARDOUR_UI::config()->canvasvar_MeterColorBase.get();
 465         int m = ARDOUR_UI::config()->canvasvar_MeterColorMid.get();
 466         int t = ARDOUR_UI::config()->canvasvar_MeterColorTop.get();
 467         int c = ARDOUR_UI::config()->canvasvar_MeterColorClip.get();
 468
 469         //cerr << "GainMeter::setup_meters() called color_changed = " << color_changed << " colors: " << hex << b << " " << m << " " << t << " " << c << endl;//DEBUG
 470
 471         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 472                 if (meters[n].width != width || meters[n].length != len || color_changed) {
 473                         delete meters[n].meter;
 474                         meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical, len, b, m, t, c);
 475                         //cerr << "GainMeter::setup_meters() w:l = " << width << ":" << len << endl;//DEBUG
 476                         meters[n].width = width;
 477                         meters[n].length = len;
 478                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 479                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 480                 }
 481
 482                 meter_packer.pack_end (*meters[n].meter, false, false);
 483                 meters[n].meter->show_all ();
 484                 meters[n].packed = true;
 485         }
 486         color_changed = false;
 487 }
 488
 489 int
 490 GainMeter::get_gm_width ()
 491 {
 492         Gtk::Requisition sz = hbox.size_request ();
 493         return sz.width;
 494 }
 495
 496 bool
 497 GainMeter::gain_key_press (GdkEventKey* ev)
 498 {
 499         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 500                 /* drop through to normal handling */
 501                 return false;
 502         }
 503         /* illegal key for gain entry */
 504         return true;
 505 }
 506
 507 bool
 508 GainMeter::peak_button_release (GdkEventButton* ev)
 509 {
 510         /* reset peak label */
 511
 512         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 513                 ResetAllPeakDisplays ();
 514         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 515                 Route* r;
 516                 if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 517                         ResetGroupPeakDisplays (r->mix_group());
 518                 }
 519         } else {
 520                 reset_peak_display ();
 521         }
 522
 523         return true;
 524 }
 525
 526 void
 527 GainMeter::reset_peak_display ()
 528 {
 529         Route * r;
 530         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 531                 r->peak_meter().reset_max();
 532         }
 533
 534         max_peak = -INFINITY;
 535         peak_display.set_label (_("-Inf"));
 536         peak_display.set_name ("MixerStripPeakDisplay");
 537 }
 538
 539 void
 540 GainMeter::reset_group_peak_display (RouteGroup* group)
 541 {
 542         Route* r;
 543         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 544                 if (group == r->mix_group()) {
 545                         reset_peak_display ();
 546                 }
 547         }
 548 }
 549
 550 gint
 551 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 552 {
 553         switch (ev->button) {
 554         case 1:
 555                 meters[which].meter->clear();
 556                 max_peak = minus_infinity();
 557                 peak_display.set_label (_("-inf"));
 558                 peak_display.set_name ("MixerStripPeakDisplay");
 559                 break;
 560
 561         case 3:
 562                 // popup_meter_menu (ev);
 563                 break;
 564         };
 565
 566         return TRUE;
 567 }
 568
 569 void
 570 GainMeter::popup_meter_menu (GdkEventButton *ev)
 571 {
 572         using namespace Menu_Helpers;
 573
 574         if (meter_menu == 0) {
 575                 meter_menu = new Gtk::Menu;
 576                 MenuList& items = meter_menu->items();
 577
 578                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 579                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 580                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 581                 items.push_back (SeparatorElem());
 582                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 583                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 584                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 585         }
 586
 587         meter_menu->popup (1, ev->time);
 588 }
 589
 590 bool
 591 GainMeter::gain_focused (GdkEventFocus* ev)
 592 {
 593         if (ev->in) {
 594                 gain_display.select_region (0, -1);
 595         } else {
 596                 gain_display.select_region (0, 0);
 597         }
 598         return false;
 599 }
 600
 601 void
 602 GainMeter::gain_activated ()
 603 {
 604         float f;
 605
 606         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 607
 608                 /* clamp to displayable values */
 609
 610                 f = min (f, 6.0f);
 611
 612                 _io->gain_control()->set_value (dB_to_coefficient(f));
 613
 614                 if (gain_display.has_focus()) {
 615                         PublicEditor::instance().reset_focus();
 616                 }
 617         }
 618 }
 619
 620 void
 621 GainMeter::show_gain ()
 622 {
 623         char buf[32];
 624
 625         float v = gain_adjustment.get_value();
 626
 627         if (v == 0.0) {
 628                 strcpy (buf, _("-inf"));
 629         } else {
 630                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 631         }
 632
 633         gain_display.set_text (buf);
 634 }
 635
 636 void
 637 GainMeter::gain_adjusted ()
 638 {
 639         if (!ignore_toggle) {
 640                 _io->gain_control()->set_value (slider_position_to_gain (gain_adjustment.get_value()));
 641         }
 642         show_gain ();
 643 }
 644
 645 void
 646 GainMeter::effective_gain_display ()
 647 {
 648         gfloat value = gain_to_slider_position (_io->effective_gain());
 649
 650         if (gain_adjustment.get_value() != value) {
 651                 ignore_toggle = true;
 652                 gain_adjustment.set_value (value);
 653                 ignore_toggle = false;
 654         }
 655 }
 656
 657 void
 658 GainMeter::gain_changed ()
 659 {
 660         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 661 }
 662
 663 void
 664 GainMeter::set_meter_strip_name (const char * name)
 665 {
 666         meter_metric_area.set_name (name);
 667 }
 668
 669 void
 670 GainMeter::set_fader_name (const char * name)
 671 {
 672         gain_slider->set_name (name);
 673 }
 674
 675 void
 676 GainMeter::update_gain_sensitive ()
 677 {
 678         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io->gain_control()->list()->automation_state() & Play));
 679 }
 680
 681
 682 static MeterPoint
 683 next_meter_point (MeterPoint mp)
 684 {
 685         switch (mp) {
 686         case MeterInput:
 687                 return MeterPreFader;
 688                 break;
 689
 690         case MeterPreFader:
 691                 return MeterPostFader;
 692                 break;
 693
 694         case MeterPostFader:
 695                 return MeterInput;
 696                 break;
 697         }
 698         /*NOTREACHED*/
 699         return MeterInput;
 700 }
 701
 702 gint
 703 GainMeter::meter_press(GdkEventButton* ev)
 704 {
 705         Route* _route;
 706
 707         wait_for_release = false;
 708
 709         if ((_route = dynamic_cast<Route*>(_io.get())) == 0) {
 710                 return FALSE;
 711         }
 712
 713         if (!ignore_toggle) {
 714
 715                 if (Keyboard::is_context_menu_event (ev)) {
 716
 717                         // no menu at this time.
 718
 719                 } else {
 720
 721                         if (ev->button == 2) {
 722
 723                                 // Primary-button2 click is the midi binding click
 724                                 // button2-click is "momentary"
 725
 726                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 727                                         wait_for_release = true;
 728                                         old_meter_point = _route->meter_point ();
 729                                 }
 730                         }
 731
 732                         if (ev->button == 1 || ev->button == 2) {
 733
 734                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 735
 736                                         /* Primary+Tertiary-click applies change to all routes */
 737
 738                                         _session.begin_reversible_command (_("meter point change"));
 739                                         Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 740                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 741                                         cmd->mark();
 742                                         _session.add_command (cmd);
 743                                         _session.commit_reversible_command ();
 744
 745
 746                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 747
 748                                         /* Primary-click: solo mix group.
 749                                            NOTE: Primary-button2 is MIDI learn.
 750                                         */
 751
 752                                         if (ev->button == 1) {
 753                                                 _session.begin_reversible_command (_("meter point change"));
 754                                                 Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 755                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 756                                                 cmd->mark();
 757                                                 _session.add_command (cmd);
 758                                                 _session.commit_reversible_command ();
 759                                         }
 760
 761                                 } else {
 762
 763                                         /* click: change just this route */
 764
 765                                         // XXX no undo yet
 766
 767                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 768                                 }
 769                         }
 770                 }
 771         }
 772
 773         return true;
 774
 775 }
 776
 777 gint
 778 GainMeter::meter_release(GdkEventButton* ev)
 779 {
 780
 781         if(!ignore_toggle){
 782                 if (wait_for_release){
 783                         wait_for_release = false;
 784                         set_meter_point (*(dynamic_cast<Route*>(_io.get())), old_meter_point);
 785                 }
 786         }
 787         return true;
 788 }
 789
 790 void
 791 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 792 {
 793         route.set_meter_point (mp, this);
 794 }
 795
 796 void
 797 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 798 {
 799         RouteGroup* mix_group;
 800
 801         if((mix_group = route.mix_group()) != 0){
 802                 mix_group->apply (&Route::set_meter_point, mp, this);
 803         } else {
 804                 route.set_meter_point (mp, this);
 805         }
 806 }
 807
 808 void
 809 GainMeter::meter_point_clicked ()
 810 {
 811         Route* r;
 812
 813         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 814
 815         }
 816 }
 817
 818 gint
 819 GainMeter::start_gain_touch (GdkEventButton* ev)
 820 {
 821         _io->gain_control()->list()->start_touch ();
 822         return FALSE;
 823 }
 824
 825 gint
 826 GainMeter::end_gain_touch (GdkEventButton* ev)
 827 {
 828         _io->gain_control()->list()->stop_touch ();
 829         return FALSE;
 830 }
 831
 832 gint
 833 GainMeter::gain_automation_state_button_event (GdkEventButton *ev)
 834 {
 835         if (ev->type == GDK_BUTTON_RELEASE) {
 836                 return TRUE;
 837         }
 838
 839         switch (ev->button) {
 840                 case 1:
 841                         gain_astate_menu.popup (1, ev->time);
 842                         break;
 843                 default:
 844                         break;
 845         }
 846
 847         return TRUE;
 848 }
 849
 850 gint
 851 GainMeter::gain_automation_style_button_event (GdkEventButton *ev)
 852 {
 853         if (ev->type == GDK_BUTTON_RELEASE) {
 854                 return TRUE;
 855         }
 856
 857         switch (ev->button) {
 858         case 1:
 859                 gain_astyle_menu.popup (1, ev->time);
 860                 break;
 861         default:
 862                 break;
 863         }
 864         return TRUE;
 865 }
 866
 867 string
 868 GainMeter::astate_string (AutoState state)
 869 {
 870         return _astate_string (state, false);
 871 }
 872
 873 string
 874 GainMeter::short_astate_string (AutoState state)
 875 {
 876         return _astate_string (state, true);
 877 }
 878
 879 string
 880 GainMeter::_astate_string (AutoState state, bool shrt)
 881 {
 882         string sstr;
 883
 884         switch (state) {
 885         case Off:
 886                 sstr = (shrt ? "M" : _("M"));
 887                 break;
 888         case Play:
 889                 sstr = (shrt ? "P" : _("P"));
 890                 break;
 891         case Touch:
 892                 sstr = (shrt ? "T" : _("T"));
 893                 break;
 894         case Write:
 895                 sstr = (shrt ? "W" : _("W"));
 896                 break;
 897         }
 898
 899         return sstr;
 900 }
 901
 902 string
 903 GainMeter::astyle_string (AutoStyle style)
 904 {
 905         return _astyle_string (style, false);
 906 }
 907
 908 string
 909 GainMeter::short_astyle_string (AutoStyle style)
 910 {
 911         return _astyle_string (style, true);
 912 }
 913
 914 string
 915 GainMeter::_astyle_string (AutoStyle style, bool shrt)
 916 {
 917         if (style & Trim) {
 918                 return _("Trim");
 919         } else {
 920                 /* XXX it might different in different languages */
 921
 922                 return (shrt ? _("Abs") : _("Abs"));
 923         }
 924 }
 925
 926 void
 927 GainMeter::gain_automation_style_changed ()
 928 {
 929   // Route* _route = dynamic_cast<Route*>(&_io);
 930         switch (_width) {
 931         case Wide:
 932                 gain_automation_style_button.set_label (astyle_string(_io->gain_control()->list()->automation_style()));
 933                 break;
 934         case Narrow:
 935                 gain_automation_style_button.set_label  (short_astyle_string(_io->gain_control()->list()->automation_style()));
 936                 break;
 937         }
 938 }
 939
 940 void
 941 GainMeter::gain_automation_state_changed ()
 942 {
 943         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::gain_automation_state_changed));
 944         //Route* _route = dynamic_cast<Route*>(&_io);
 945
 946         bool x;
 947
 948         switch (_width) {
 949         case Wide:
 950                 gain_automation_state_button.set_label (astate_string(_io->gain_control()->list()->automation_state()));
 951                 break;
 952         case Narrow:
 953                 gain_automation_state_button.set_label (short_astate_string(_io->gain_control()->list()->automation_state()));
 954                 break;
 955         }
 956
 957         x = (_io->gain_control()->list()->automation_state() != Off);
 958
 959         if (gain_automation_state_button.get_active() != x) {
 960                 ignore_toggle = true;
 961                 gain_automation_state_button.set_active (x);
 962                 ignore_toggle = false;
 963         }
 964
 965         update_gain_sensitive ();
 966
 967         /* start watching automation so that things move */
 968
 969         gain_watching.disconnect();
 970
 971         if (x) {
 972                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeter::effective_gain_display));
 973         }
 974 }
 975
 976 void GainMeter::clear_meters ()
 977 {
 978         for (vector<MeterInfo>::iterator i = meters.begin(); i < meters.end(); i++) {
 979                 (*i).meter->clear();
 980         }
 981 }
 982
 983 void GainMeter::color_handler (bool dpi)
 984 {
 985         color_changed = true;
 986         dpi_changed = (dpi) ? true : false;
 987         setup_meters();
 988 }