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   $Id$
  19 */
  20
  21 #include <limits.h>
  22
  23 #include <ardour/io.h>
  24 #include <ardour/route.h>
  25 #include <ardour/route_group.h>
  26 #include <ardour/session.h>
  27 #include <ardour/session_route.h>
  28 #include <ardour/dB.h>
  29
  30 #include <gtkmm2ext/utils.h>
  31 #include <gtkmm2ext/pix.h>
  32 #include <gtkmm2ext/fastmeter.h>
  33 #include <gtkmm2ext/stop_signal.h>
  34 #include <gtkmm2ext/barcontroller.h>
  35 #include <midi++/manager.h>
  36 #include <pbd/fastlog.h>
  37
  38 #include "ardour_ui.h"
  39 #include "gain_meter.h"
  40 #include "utils.h"
  41 #include "logmeter.h"
  42 #include "gui_thread.h"
  43
  44 #include <ardour/session.h>
  45 #include <ardour/route.h>
  46
  47 #include "i18n.h"
  48 #include "misc_xpms"
  49
  50 using namespace ARDOUR;
  51 using namespace Gtkmm2ext;
  52 using namespace Gtk;
  53 using namespace sigc;
  54
  55 Signal0<void> GainMeter::ResetAllPeakDisplays;
  56 Signal1<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
  57 Pix* GainMeter::slider_pix = 0;
  58
  59 int
  60 GainMeter::setup_slider_pix ()
  61 {
  62         vector<const char **> xpms;
  63
  64         xpms.push_back (vslider_rail_xpm);
  65         xpms.push_back (vslider_slider_xpm);
  66
  67         if ((slider_pix = get_pix ("sliders", xpms, false)) == 0) {
  68                 error << _("Cannot create slider pixmaps") << endmsg;
  69                 return -1;
  70         }
  71
  72         slider_pix->ref ();
  73         return 0;
  74 }
  75
  76 GainMeter::GainMeter (IO& io, Session& s)
  77         : _io (io),
  78           _session (s),
  79           gain_slider (0),
  80           // 0.781787 is the value needed for gain to be set to 0.
  81           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  82           gain_display (&gain_adjustment, "MixerStripGainDisplay"),
  83           gain_unit_label (_("dbFS")),
  84           meter_point_label (_("pre")),
  85           top_table (1, 2)
  86
  87 {
  88         if (slider_pix == 0) {
  89                 setup_slider_pix ();
  90         }
  91
  92         ignore_toggle = false;
  93         meter_menu = 0;
  94
  95         gain_slider = manage (new VSliderController (slider_pix,
  96                                                      &gain_adjustment,
  97                                                      & _io.midi_gain_control(),
  98                                                      false));
  99
 100         gain_slider->signal_button_press_event.connect (mem_fun(*this, &GainMeter::start_gain_touch));
 101         gain_slider->signal_button_release_event.connect (mem_fun(*this, &GainMeter::end_gain_touch));
 102         gain_slider->set_name ("MixerGainMeter");
 103
 104         if (_session.midi_port()) {
 105                 _io.set_midi_to_gain_function (slider_position_to_gain);
 106                 _io.set_gain_to_midi_function (gain_to_slider_position);
 107         }
 108
 109         gain_display.set_print_func (_gain_printer, this);
 110         set_size_request_to_display_given_text (gain_display, "-86.0", 2, 2);
 111
 112         gain_unit_button.add (gain_unit_label);
 113         gain_unit_button.set_name ("MixerStripGainUnitButton");
 114         gain_unit_label.set_name ("MixerStripGainUnitButton");
 115
 116         top_table.set_col_spacings (2);
 117         top_table.set_homogeneous (true);
 118         top_table.attach (gain_unit_button, 0, 1, 0, 1);
 119
 120         Route* r;
 121
 122         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 123                 r->meter_change.connect (mem_fun(*this, &GainMeter::meter_changed));
 124                 meter_point_button.add (meter_point_label);
 125                 meter_point_button.set_name ("MixerStripMeterPreButton");
 126                 meter_point_label.set_name ("MixerStripMeterPreButton");
 127
 128                 switch (r->meter_point()) {
 129                 case MeterInput:
 130                         meter_point_label.set_text (_("input"));
 131                         break;
 132
 133                 case MeterPreFader:
 134                         meter_point_label.set_text (_("pre"));
 135                         break;
 136
 137                 case MeterPostFader:
 138                         meter_point_label.set_text (_("post"));
 139                         break;
 140                 }
 141
 142                 /* TRANSLATORS: this string should be longest of the strings
 143                    used to describe meter points. In english, its "input".
 144                 */
 145
 146                 set_size_request_to_display_given_text (meter_point_button, _("tupni"), 2, 2);
 147
 148                 meter_point_button.signal_button_press_event.connect (mem_fun(*this, &GainMeter::meter_press));
 149                 meter_point_button.signal_button_release_event.connect (mem_fun(*this, &GainMeter::meter_release));
 150
 151                 top_table.attach (meter_point_button, 1, 2, 0, 1);
 152         }
 153
 154         gain_display_box.set_spacing (2);
 155         gain_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 156         gain_display_frame.set_name ("BaseFrame");
 157         gain_display_frame.add (gain_display);
 158         gain_display_box.pack_start (gain_display_frame, false, false);
 159
 160         peak_display.set_name ("MixerStripPeakDisplay");
 161         set_size_request_to_display_given_text (peak_display, "-86.0", 2, 2);
 162         peak_display.add (peak_display_label);
 163         peak_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 164         peak_display_frame.set_name ("BaseFrame");
 165         peak_display_frame.add (peak_display);
 166         max_peak = minus_infinity();
 167         peak_display_label.set_text (_("-inf"));
 168
 169         gain_display_box.pack_start (peak_display_frame, false, false);
 170
 171
 172         meter_metric_area.set_size_request (18, -1);
 173         meter_metric_area.set_name ("MeterMetricsStrip");
 174
 175         meter_packer.show ();
 176         gain_slider->show_all ();
 177
 178         meter_packer.set_spacing (2);
 179         fader_box.set_spacing (2);
 180
 181         fader_box.pack_start (*gain_slider, false, false);
 182
 183         hbox.set_spacing (4);
 184         hbox.pack_start (fader_box, false, false);
 185         hbox.pack_start (meter_packer, false, false);
 186
 187         set_spacing (4);
 188         pack_start (top_table, false, false);
 189         pack_start (gain_display_box, false, false);
 190         pack_start (hbox, false, false);
 191
 192         show_all ();
 193
 194         _io.gain_changed.connect (mem_fun(*this, &GainMeter::gain_changed));
 195
 196         meter_metric_area.signal_expose_event.connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 197         gain_adjustment.value_changed.connect (mem_fun(*this, &GainMeter::gain_adjusted));
 198         peak_display.signal_button_release_event.connect (mem_fun(*this, &GainMeter::peak_button_release));
 199
 200         _session.MeterHoldChanged.connect (mem_fun(*this, &GainMeter::meter_hold_changed));
 201
 202         gain_changed (0);
 203         update_gain_sensitive ();
 204
 205         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 206         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 207 }
 208
 209 void
 210 GainMeter::set_width (Width w)
 211 {
 212         switch (w) {
 213         case Wide:
 214                 peak_display_frame.show_all();
 215                 break;
 216         case Narrow:
 217                 peak_display_frame.hide_all();
 218                 break;
 219         }
 220
 221         _width = w;
 222         setup_meters ();
 223 }
 224
 225 gint
 226 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 227 {
 228         /* XXX optimize this so that it doesn't do it all everytime */
 229
 230         double fraction;
 231
 232         Gdk_Window win (meter_metric_area.get_window());
 233         Gdk_GC fg_gc (meter_metric_area.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 234         Gdk_GC bg_gc (meter_metric_area.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 235         Gdk_Font font (meter_metric_area.get_style()->get_font());
 236         gint x, y, width, height, depth;
 237         gint pos;
 238         int  db_points[] = { -50, -10, -3, 0, 6 };
 239         uint32_t i;
 240         char buf[32];
 241         GdkRectangle base_rect;
 242         GdkRectangle draw_rect;
 243
 244         win.get_geometry (x, y, width, height, depth);
 245
 246         base_rect.width = width;
 247         base_rect.height = height;
 248         base_rect.x = 0;
 249         base_rect.y = 0;
 250
 251         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 252         win.draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 253
 254         for (i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 255                 fraction = log_meter (db_points[i]);
 256                 pos = height - (gint) floor (height * fraction);
 257
 258                 snprintf (buf, sizeof (buf), "%d", db_points[i]);
 259
 260                 gint twidth;
 261                 gint lbearing;
 262                 gint rbearing;
 263                 gint ascent;
 264                 gint descent;
 265
 266                 gdk_string_extents (font,
 267                                     buf,
 268                                     &lbearing,
 269                                     &rbearing,
 270                                     &twidth,
 271                                     &ascent,
 272                                     &descent);
 273
 274                 win.draw_text (font, fg_gc, width - twidth, pos + ascent, buf, strlen (buf));
 275         }
 276
 277         return TRUE;
 278 }
 279
 280 GainMeter::~GainMeter ()
 281 {
 282
 283         if (meter_menu) {
 284                 delete meter_menu;
 285         }
 286
 287         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 288                 if ((*i).meter) {
 289                         delete (*i).meter;
 290                 }
 291         }
 292 }
 293
 294 void
 295 GainMeter::update_meters ()
 296 {
 297         vector<MeterInfo>::iterator i;
 298         uint32_t n;
 299         float peak;
 300         char buf[32];
 301
 302
 303         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 304                 if ((*i).packed) {
 305                         peak = _io.peak_input_power (n);
 306
 307                         if (_session.meter_falloff() == 0.0f || peak > (*i).meter->get_user_level()) {
 308                                 (*i).meter->set (log_meter (peak), peak);
 309                         }
 310
 311                         if (peak > max_peak) {
 312                                 max_peak = peak;
 313                                 /* set peak display */
 314                                 snprintf (buf, sizeof(buf), "%.1f", max_peak);
 315                                 peak_display_label.set_text (buf);
 316
 317                                 if (max_peak >= 0.0f) {
 318                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 319                                 }
 320                         }
 321                 }
 322         }
 323
 324 }
 325
 326 void
 327 GainMeter::update_meters_falloff ()
 328 {
 329         vector<MeterInfo>::iterator i;
 330         uint32_t n;
 331         float dbpeak;
 332
 333         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 334                 if ((*i).packed) {
 335                         // just do falloff
 336                         //peak = (*i).meter->get_level() * _falloff_rate;
 337                         dbpeak = (*i).meter->get_user_level() - _session.meter_falloff();
 338
 339                         dbpeak = std::max(dbpeak, -200.0f);
 340
 341                         // cerr << "tmplevel: " << tmplevel << endl;
 342                         (*i).meter->set (log_meter (dbpeak), dbpeak);
 343                 }
 344         }
 345
 346 }
 347
 348
 349 void
 350 GainMeter::meter_hold_changed()
 351 {
 352         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::meter_hold_changed));
 353
 354         vector<MeterInfo>::iterator i;
 355         uint32_t n;
 356
 357         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 358
 359                 (*i).meter->set_hold_count ((uint32_t) floor(_session.meter_hold()));
 360         }
 361 }
 362
 363 void
 364 GainMeter::hide_all_meters ()
 365 {
 366         bool remove_metric_area = false;
 367
 368         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 369                 if ((*i).packed) {
 370                         remove_metric_area = true;
 371                         meter_packer.remove (*((*i).meter));
 372                         (*i).packed = false;
 373                 }
 374         }
 375
 376         if (remove_metric_area) {
 377                 if (meter_metric_area.get_parent()) {
 378                         meter_packer.remove (meter_metric_area);
 379                 }
 380         }
 381 }
 382
 383 void
 384 GainMeter::setup_meters ()
 385 {
 386         uint32_t nmeters = _io.n_outputs();
 387         guint16 width;
 388
 389         hide_all_meters ();
 390
 391         Route* r;
 392
 393         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 394
 395                 switch (r->meter_point()) {
 396                 case MeterPreFader:
 397                 case MeterInput:
 398                         nmeters = r->n_inputs();
 399                         break;
 400                 case MeterPostFader:
 401                         nmeters = r->n_outputs();
 402                         break;
 403                 }
 404
 405         } else {
 406
 407                 nmeters = _io.n_outputs();
 408
 409         }
 410
 411         if (nmeters == 0) {
 412                 return;
 413         }
 414
 415         if (_width == Wide) {
 416                 meter_packer.pack_start (meter_metric_area, false, false);
 417                 meter_metric_area.show_all ();
 418         }
 419
 420         if (nmeters <= 2) {
 421                 width = regular_meter_width;
 422         } else {
 423                 width = thin_meter_width;
 424         }
 425
 426         while (meters.size() < nmeters) {
 427                 meters.push_back (MeterInfo());
 428         }
 429
 430         for (uint32_t n = 0; n < nmeters; ++n) {
 431                 if (meters[n].width != width) {
 432                         delete meters[n].meter;
 433                         meters[n].meter = new FastMeter ((uint32_t) floor (_session.meter_hold()), width, FastMeter::Vertical);
 434                         meters[n].width = width;
 435
 436                         meters[n].meter->signal_add_events (Gdk::BUTTON_RELEASE_MASK);
 437                         meters[n].meter->signal_button_release_event.connect
 438                                 (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 439                         meters[n].meter->signal_button_release_event.connect_after (ptr_fun (do_not_propagate));
 440                 }
 441
 442                 meter_packer.pack_start (*meters[n].meter, false, false);
 443                 meters[n].meter->show_all ();
 444                 meters[n].packed = true;
 445         }
 446 }
 447
 448 gint
 449 GainMeter::peak_button_release (GdkEventButton* ev)
 450 {
 451         /* reset peak label */
 452
 453         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
 454                 ResetAllPeakDisplays ();
 455         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 456                 Route* r;
 457                 if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 458                         ResetGroupPeakDisplays (r->mix_group());
 459                 }
 460         } else {
 461                 reset_peak_display ();
 462         }
 463         return TRUE;
 464 }
 465
 466 void
 467 GainMeter::reset_peak_display ()
 468 {
 469         max_peak = minus_infinity();
 470         peak_display_label.set_text (_("-inf"));
 471         peak_display.set_name ("MixerStripPeakDisplay");
 472 }
 473
 474 void
 475 GainMeter::reset_group_peak_display (RouteGroup* group)
 476 {
 477         Route* r;
 478         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 479                 if (group == r->mix_group()) {
 480                         reset_peak_display ();
 481                 }
 482         }
 483 }
 484
 485 gint
 486 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 487 {
 488         switch (ev->button) {
 489         case 1:
 490                 meters[which].meter->clear();
 491                 max_peak = minus_infinity();
 492                 peak_display_label.set_text (_("-inf"));
 493                 peak_display.set_name ("MixerStripPeakDisplay");
 494                 break;
 495
 496         case 3:
 497                 // popup_meter_menu (ev);
 498                 break;
 499         };
 500
 501         return TRUE;
 502 }
 503
 504 void
 505 GainMeter::popup_meter_menu (GdkEventButton *ev)
 506 {
 507         using namespace Menu_Helpers;
 508
 509         if (meter_menu == 0) {
 510                 meter_menu = new Gtk::Menu;
 511                 MenuList& items = meter_menu->items();
 512
 513                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 514                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 515                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 516                 items.push_back (SeparatorElem());
 517                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 518                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 519                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 520         }
 521
 522         meter_menu->popup (1, ev->time);
 523 }
 524
 525 void
 526 GainMeter::_gain_printer (char buf[32], Gtk::Adjustment& adj, void *arg)
 527 {
 528         static_cast<GainMeter *>(arg)->gain_printer (buf, adj);
 529 }
 530
 531 void
 532 GainMeter::gain_printer (char buf[32], Gtk::Adjustment& adj)
 533 {
 534         float v = adj.get_value();
 535
 536         if (v == 0.0) {
 537                 strcpy (buf, _("-inf"));
 538         } else {
 539                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 540         }
 541 }
 542
 543 void
 544 GainMeter::gain_adjusted ()
 545 {
 546         if (!ignore_toggle) {
 547                 _io.set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 548         }
 549 }
 550
 551 void
 552 GainMeter::effective_gain_display ()
 553 {
 554         gfloat value = gain_to_slider_position (_io.effective_gain());
 555
 556         if (gain_adjustment.get_value() != value) {
 557                 ignore_toggle = true;
 558                 gain_adjustment.set_value (value);
 559                 ignore_toggle = false;
 560         }
 561 }
 562
 563 void
 564 GainMeter::gain_changed (void *src)
 565 {
 566         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 567 }
 568
 569 gint
 570 GainMeter::entry_focus_event (GdkEventFocus* ev)
 571 {
 572         if (ev->in) {
 573                 ARDOUR_UI::instance()->allow_focus (true);
 574         } else {
 575                 ARDOUR_UI::instance()->allow_focus (false);
 576         }
 577         return TRUE;
 578 }
 579
 580
 581 void
 582 GainMeter::set_meter_strip_name (string name)
 583 {
 584         meter_metric_area.set_name (name);
 585 }
 586
 587 void
 588 GainMeter::set_fader_name (string name)
 589 {
 590         gain_slider->set_name (name);
 591 }
 592
 593 void
 594 GainMeter::update_gain_sensitive ()
 595 {
 596         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io.gain_automation_state() & Play));
 597 }
 598
 599
 600 static MeterPoint
 601 next_meter_point (MeterPoint mp)
 602 {
 603         switch (mp) {
 604         case MeterInput:
 605                 return MeterPreFader;
 606                 break;
 607
 608         case MeterPreFader:
 609                 return MeterPostFader;
 610                 break;
 611
 612         case MeterPostFader:
 613                 return MeterInput;
 614                 break;
 615         }
 616         /*NOTREACHED*/
 617         return MeterInput;
 618 }
 619
 620 gint
 621 GainMeter::meter_press(GdkEventButton* ev)
 622 {
 623         Route* _route;
 624
 625         wait_for_release = false;
 626
 627         if ((_route = dynamic_cast<Route*>(&_io)) == 0) {
 628                 return FALSE;
 629         }
 630
 631         if (!ignore_toggle) {
 632
 633                 if (Keyboard::is_context_menu_event (ev)) {
 634
 635                         // no menu at this time.
 636
 637                 } else {
 638
 639                         if (ev->button == 2) {
 640
 641                                 // ctrl-button2 click is the midi binding click
 642                                 // button2-click is "momentary"
 643
 644                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
 645                                         wait_for_release = true;
 646                                         old_meter_point = _route->meter_point ();
 647                                 }
 648                         }
 649
 650                         if (ev->button == 1 || ev->button == 2) {
 651
 652                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
 653
 654                                         /* ctrl-shift-click applies change to all routes */
 655
 656                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 657
 658                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 659
 660                                         /* ctrl-click: solo mix group.
 661                                            ctrl-button2 is MIDI learn.
 662                                         */
 663
 664                                         if (ev->button == 1) {
 665                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 666                                         }
 667
 668                                 } else {
 669
 670                                         /* click: solo this route */
 671
 672                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 673                                 }
 674                         }
 675                 }
 676         }
 677
 678         return stop_signal (meter_point_button, "button-press-event");
 679
 680 }
 681
 682 gint
 683 GainMeter::meter_release(GdkEventButton* ev)
 684 {
 685         if(!ignore_toggle){
 686                 if (wait_for_release){
 687                         wait_for_release = false;
 688                         set_meter_point (*(dynamic_cast<Route*>(&_io)), old_meter_point);
 689                         stop_signal (meter_point_button, "button-release-event");
 690                 }
 691         }
 692         return TRUE;
 693 }
 694
 695 void
 696 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 697 {
 698         route.set_meter_point (mp, this);
 699 }
 700
 701 void
 702 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 703 {
 704         RouteGroup* mix_group;
 705
 706         if((mix_group = route.mix_group()) != 0){
 707                 mix_group->apply (&Route::set_meter_point, mp, this);
 708         } else {
 709                 route.set_meter_point (mp, this);
 710         }
 711 }
 712
 713 void
 714 GainMeter::meter_changed (void *src)
 715 {
 716         Route* r;
 717
 718         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::meter_changed), src));
 719
 720         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 721
 722                 switch (r->meter_point()) {
 723                 case MeterInput:
 724                         meter_point_label.set_text (_("input"));
 725                         break;
 726
 727                 case MeterPreFader:
 728                         meter_point_label.set_text (_("pre"));
 729                         break;
 730
 731                 case MeterPostFader:
 732                         meter_point_label.set_text (_("post"));
 733                         break;
 734                 }
 735
 736                 setup_meters ();
 737         }
 738 }
 739
 740 void
 741 GainMeter::meter_point_clicked ()
 742 {
 743         Route* r;
 744
 745         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 746
 747         }
 748 }
 749
 750 gint
 751 GainMeter::start_gain_touch (GdkEventButton* ev)
 752 {
 753         _io.start_gain_touch ();
 754         return FALSE;
 755 }
 756
 757 gint
 758 GainMeter::end_gain_touch (GdkEventButton* ev)
 759 {
 760         _io.end_gain_touch ();
 761         return FALSE;
 762 }