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/fastmeter.h>
  32 #include <gtkmm2ext/stop_signal.h>
  33 #include <gtkmm2ext/barcontroller.h>
  34 #include <midi++/manager.h>
  35 #include <pbd/fastlog.h>
  36
  37 #include "ardour_ui.h"
  38 #include "gain_meter.h"
  39 #include "utils.h"
  40 #include "logmeter.h"
  41 #include "gui_thread.h"
  42 #include "keyboard.h"
  43
  44 #include <ardour/session.h>
  45 #include <ardour/route.h>
  46
  47 #include "i18n.h"
  48
  49 using namespace ARDOUR;
  50 using namespace Gtkmm2ext;
  51 using namespace Gtk;
  52 using namespace sigc;
  53 using namespace std;
  54
  55 sigc::signal<void> GainMeter::ResetAllPeakDisplays;
  56 sigc::signal<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
  57 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
  58 Glib::RefPtr<Gdk::Pixbuf> GainMeter::rail;
  59 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  60
  61 int
  62 GainMeter::setup_slider_pix ()
  63 {
  64         string path = ARDOUR::find_data_file("vslider02_slider.xpm", "pixmaps");
  65         if (path.empty()) {
  66                 error << _("cannot find images for fader slider") << endmsg;
  67                 return -1;
  68         }
  69         slider = Gdk::Pixbuf::create_from_file (path);
  70
  71         path = ARDOUR::find_data_file("vslider02_rail.xpm", "pixmaps");
  72         if (path.empty()) {
  73                 error << _("cannot find images for fader rail") << endmsg;
  74                 return -1;
  75         }
  76         rail = Gdk::Pixbuf::create_from_file (path);
  77
  78         return 0;
  79 }
  80
  81 GainMeter::GainMeter (IO& io, Session& s)
  82         : _io (io),
  83           _session (s),
  84           gain_slider (0),
  85           // 0.781787 is the value needed for gain to be set to 0.
  86           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  87           gain_display (&gain_adjustment, "MixerStripGainDisplay"),
  88           gain_unit_label (_("dbFS")),
  89           meter_point_label (_("pre")),
  90           top_table (1, 2)
  91
  92 {
  93         if (slider == 0) {
  94                 setup_slider_pix ();
  95         }
  96
  97         ignore_toggle = false;
  98         meter_menu = 0;
  99
 100         gain_slider = manage (new VSliderController (slider, rail,
 101                                                      &gain_adjustment,
 102                                                      & _io.midi_gain_control(),
 103                                                      false));
 104
 105         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
 106         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
 107         gain_slider->set_name ("MixerGainMeter");
 108
 109         if (_session.midi_port()) {
 110                 _io.set_midi_to_gain_function (slider_position_to_gain);
 111                 _io.set_gain_to_midi_function (gain_to_slider_position);
 112         }
 113
 114         gain_display.set_print_func (_gain_printer, this);
 115
 116         gain_unit_button.add (gain_unit_label);
 117         gain_unit_button.set_name ("MixerStripGainUnitButton");
 118         gain_unit_label.set_name ("MixerStripGainUnitButton");
 119
 120         meter_point_button.signal_button_press_event().connect (mem_fun (*this, &GainMeter::meter_press), false);
 121         meter_point_button.signal_button_release_event().connect (mem_fun (*this, &GainMeter::meter_release), false);
 122
 123
 124         top_table.set_col_spacings (2);
 125         top_table.set_homogeneous (true);
 126         top_table.attach (gain_unit_button, 0, 1, 0, 1);
 127
 128         Route* r;
 129
 130         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 131
 132                 r->meter_change.connect (mem_fun(*this, &GainMeter::meter_changed));
 133                 meter_point_button.add (meter_point_label);
 134                 meter_point_button.set_name ("MixerStripMeterPreButton");
 135                 meter_point_label.set_name ("MixerStripMeterPreButton");
 136
 137                 switch (r->meter_point()) {
 138                 case MeterInput:
 139                         meter_point_label.set_text (_("input"));
 140                         break;
 141
 142                 case MeterPreFader:
 143                         meter_point_label.set_text (_("pre"));
 144                         break;
 145
 146                 case MeterPostFader:
 147                         meter_point_label.set_text (_("post"));
 148                         break;
 149                 }
 150
 151                 /* TRANSLATORS: this string should be longest of the strings
 152                    used to describe meter points. In english, its "input".
 153                 */
 154
 155                 set_size_request_to_display_given_text (meter_point_button, _("tupni"), 2, 2);
 156
 157
 158                 top_table.attach (meter_point_button, 1, 2, 0, 1);
 159         }
 160         gain_display_box.set_spacing (2);
 161         set_size_request_to_display_given_text (gain_display_frame, "-86.0", 2, 2);
 162         gain_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 163         gain_display_frame.set_name ("BaseFrame");
 164         gain_display_frame.add (gain_display);
 165         gain_display_box.pack_start (gain_display_frame,  Gtk::PACK_SHRINK);
 166
 167         peak_display.set_name ("MixerStripPeakDisplay");
 168         peak_display.add (peak_display_label);
 169         set_size_request_to_display_given_text (peak_display_frame, "-86.0", 2, 2);
 170         peak_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 171         peak_display_frame.set_name ("BaseFrame");
 172         peak_display_frame.add (peak_display);
 173         max_peak = minus_infinity();
 174         peak_display_label.set_text (_("-inf"));
 175
 176         gain_display_box.pack_end (peak_display_frame,  Gtk::PACK_SHRINK);
 177
 178         meter_metric_area.set_size_request (25, -1);
 179         meter_metric_area.set_name ("MeterMetricsStrip");
 180
 181         meter_packer.set_spacing (2);
 182
 183         hbox.set_spacing (4);
 184         hbox.pack_start (*gain_slider, false, false, 2);
 185         hbox.pack_start (meter_packer, true, false);
 186
 187         set_spacing (4);
 188
 189         pack_start (top_table,  Gtk::PACK_SHRINK);
 190         pack_start (gain_display_box,  Gtk::PACK_SHRINK);
 191         pack_start (hbox,  Gtk::PACK_SHRINK);
 192
 193         _io.gain_changed.connect (mem_fun(*this, &GainMeter::gain_changed));
 194
 195         meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 196         gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeter::gain_adjusted));
 197         peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeter::peak_button_release));
 198
 199         _session.MeterHoldChanged.connect (mem_fun(*this, &GainMeter::meter_hold_changed));
 200
 201         gain_changed (0);
 202         update_gain_sensitive ();
 203
 204         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 205         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 206 }
 207
 208 void
 209 GainMeter::set_width (Width w)
 210 {
 211         switch (w) {
 212         case Wide:
 213                 peak_display_frame.show_all();
 214                 break;
 215         case Narrow:
 216                 peak_display_frame.hide_all();
 217                 break;
 218         }
 219
 220         _width = w;
 221         setup_meters ();
 222 }
 223
 224 Glib::RefPtr<Gdk::Pixmap>
 225 GainMeter::render_metrics (Gtk::Widget& w)
 226 {
 227         Glib::RefPtr<Gdk::Window> win (w.get_window());
 228         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 229         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 230         gint x, y, width, height, depth;
 231         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 232         char buf[32];
 233         int theight;
 234         int twidth;
 235
 236         win->get_geometry (x, y, width, height, depth);
 237
 238         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 239
 240         metric_pixmaps[w.get_name()] = pixmap;
 241
 242         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 243
 244         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 245
 246         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 247
 248                 float fraction = log_meter (db_points[i]);
 249                 gint pos = height - (gint) floor (height * fraction);
 250
 251                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 252
 253                 layout->set_text (buf);
 254                 layout->get_pixel_size (twidth, theight);
 255
 256                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 257                 pixmap->draw_layout (fg_gc, 6, pos - (theight/2), layout);
 258         }
 259
 260         return pixmap;
 261 }
 262
 263 gint
 264 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 265 {
 266         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 267         Glib::RefPtr<Gdk::GC> fg_gc (meter_metric_area.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 268         Glib::RefPtr<Gdk::GC> bg_gc (meter_metric_area.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 269         GdkRectangle base_rect;
 270         GdkRectangle draw_rect;
 271         gint x, y, width, height, depth;
 272
 273         win->get_geometry (x, y, width, height, depth);
 274
 275         base_rect.width = width;
 276         base_rect.height = height;
 277         base_rect.x = 0;
 278         base_rect.y = 0;
 279
 280         Glib::RefPtr<Gdk::Pixmap> pixmap;
 281         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 282
 283         if (i == metric_pixmaps.end()) {
 284                 pixmap = render_metrics (meter_metric_area);
 285         } else {
 286                 pixmap = i->second;
 287         }
 288
 289         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 290         win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 291         win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 292
 293         return true;
 294 }
 295
 296 GainMeter::~GainMeter ()
 297 {
 298         if (meter_menu) {
 299                 delete meter_menu;
 300         }
 301
 302         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 303                 if ((*i).meter) {
 304                         delete (*i).meter;
 305                 }
 306         }
 307 }
 308
 309 void
 310 GainMeter::update_meters ()
 311 {
 312         vector<MeterInfo>::iterator i;
 313         uint32_t n;
 314         float peak;
 315         char buf[32];
 316
 317         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 318                 if ((*i).packed) {
 319                         peak = _io.peak_input_power (n);
 320
 321                         if (_session.meter_falloff() == 0.0f || peak > (*i).meter->get_user_level()) {
 322                                 (*i).meter->set (log_meter (peak), peak);
 323                         }
 324
 325                         if (peak > max_peak) {
 326                                 max_peak = peak;
 327                                 /* set peak display */
 328                                 snprintf (buf, sizeof(buf), "%.1f", max_peak);
 329                                 peak_display_label.set_text (buf);
 330
 331                                 if (max_peak >= 0.0f) {
 332                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 333                                 }
 334                         }
 335                 }
 336         }
 337
 338 }
 339
 340 void
 341 GainMeter::update_meters_falloff ()
 342 {
 343         vector<MeterInfo>::iterator i;
 344         uint32_t n;
 345         float dbpeak;
 346
 347         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 348                 if ((*i).packed) {
 349                         // just do falloff
 350                         //peak = (*i).meter->get_level() * _falloff_rate;
 351                         dbpeak = (*i).meter->get_user_level() - _session.meter_falloff();
 352
 353                         dbpeak = std::max(dbpeak, -200.0f);
 354
 355                         // cerr << "tmplevel: " << tmplevel << endl;
 356                         (*i).meter->set (log_meter (dbpeak), dbpeak);
 357                 }
 358         }
 359
 360 }
 361
 362
 363 void
 364 GainMeter::meter_hold_changed()
 365 {
 366         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::meter_hold_changed));
 367
 368         vector<MeterInfo>::iterator i;
 369         uint32_t n;
 370
 371         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 372
 373                 (*i).meter->set_hold_count ((uint32_t) floor(_session.meter_hold()));
 374         }
 375 }
 376
 377 void
 378 GainMeter::hide_all_meters ()
 379 {
 380         bool remove_metric_area = false;
 381
 382         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 383                 if ((*i).packed) {
 384                         remove_metric_area = true;
 385                         meter_packer.remove (*((*i).meter));
 386                         (*i).packed = false;
 387                 }
 388         }
 389
 390         if (remove_metric_area) {
 391                 if (meter_metric_area.get_parent()) {
 392                         meter_packer.remove (meter_metric_area);
 393                 }
 394         }
 395 }
 396
 397 void
 398 GainMeter::setup_meters ()
 399 {
 400         uint32_t nmeters = _io.n_outputs();
 401         guint16 width;
 402
 403         hide_all_meters ();
 404
 405         Route* r;
 406
 407         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 408
 409                 switch (r->meter_point()) {
 410                 case MeterPreFader:
 411                 case MeterInput:
 412                         nmeters = r->n_inputs();
 413                         break;
 414                 case MeterPostFader:
 415                         nmeters = r->n_outputs();
 416                         break;
 417                 }
 418
 419         } else {
 420
 421                 nmeters = _io.n_outputs();
 422
 423         }
 424
 425         if (nmeters == 0) {
 426                 return;
 427         }
 428
 429         if (nmeters <= 2) {
 430                 width = regular_meter_width;
 431         } else {
 432                 width = thin_meter_width;
 433         }
 434
 435         while (meters.size() < nmeters) {
 436                 meters.push_back (MeterInfo());
 437         }
 438
 439         for (uint32_t n = 0; n < nmeters; ++n) {
 440                 if (meters[n].width != width) {
 441                         delete meters[n].meter;
 442                         meters[n].meter = new FastMeter ((uint32_t) floor (_session.meter_hold()), width, FastMeter::Vertical);
 443                         meters[n].width = width;
 444
 445                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 446                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 447                 }
 448
 449                 meter_packer.pack_start (*meters[n].meter, Gtk::PACK_SHRINK);
 450                 meters[n].meter->show_all ();
 451                 meters[n].packed = true;
 452         }
 453
 454         if (_width == Wide) {
 455                 meter_packer.pack_start (meter_metric_area, Gtk::PACK_SHRINK);
 456                 meter_metric_area.show_all ();
 457         }
 458 }
 459
 460 gint
 461 GainMeter::peak_button_release (GdkEventButton* ev)
 462 {
 463         /* reset peak label */
 464
 465         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
 466                 ResetAllPeakDisplays ();
 467         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 468                 Route* r;
 469                 if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 470                         ResetGroupPeakDisplays (r->mix_group());
 471                 }
 472         } else {
 473                 reset_peak_display ();
 474         }
 475         return TRUE;
 476 }
 477
 478 void
 479 GainMeter::reset_peak_display ()
 480 {
 481         max_peak = minus_infinity();
 482         peak_display_label.set_text (_("-inf"));
 483         peak_display.set_name ("MixerStripPeakDisplay");
 484 }
 485
 486 void
 487 GainMeter::reset_group_peak_display (RouteGroup* group)
 488 {
 489         Route* r;
 490         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 491                 if (group == r->mix_group()) {
 492                         reset_peak_display ();
 493                 }
 494         }
 495 }
 496
 497 gint
 498 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 499 {
 500         switch (ev->button) {
 501         case 1:
 502                 meters[which].meter->clear();
 503                 max_peak = minus_infinity();
 504                 peak_display_label.set_text (_("-inf"));
 505                 peak_display.set_name ("MixerStripPeakDisplay");
 506                 break;
 507
 508         case 3:
 509                 // popup_meter_menu (ev);
 510                 break;
 511         };
 512
 513         return TRUE;
 514 }
 515
 516 void
 517 GainMeter::popup_meter_menu (GdkEventButton *ev)
 518 {
 519         using namespace Menu_Helpers;
 520
 521         if (meter_menu == 0) {
 522                 meter_menu = new Gtk::Menu;
 523                 MenuList& items = meter_menu->items();
 524
 525                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 526                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 527                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 528                 items.push_back (SeparatorElem());
 529                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 530                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 531                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 532         }
 533
 534         meter_menu->popup (1, ev->time);
 535 }
 536
 537 void
 538 GainMeter::_gain_printer (char buf[32], Gtk::Adjustment& adj, void *arg)
 539 {
 540         static_cast<GainMeter *>(arg)->gain_printer (buf, adj);
 541 }
 542
 543 void
 544 GainMeter::gain_printer (char buf[32], Gtk::Adjustment& adj)
 545 {
 546         float v = adj.get_value();
 547
 548         if (v == 0.0) {
 549                 strcpy (buf, _("-inf"));
 550         } else {
 551                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 552         }
 553 }
 554
 555 void
 556 GainMeter::gain_adjusted ()
 557 {
 558         if (!ignore_toggle) {
 559                 _io.set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 560         }
 561 }
 562
 563 void
 564 GainMeter::effective_gain_display ()
 565 {
 566         gfloat value = gain_to_slider_position (_io.effective_gain());
 567
 568         if (gain_adjustment.get_value() != value) {
 569                 ignore_toggle = true;
 570                 gain_adjustment.set_value (value);
 571                 ignore_toggle = false;
 572         }
 573 }
 574
 575 void
 576 GainMeter::gain_changed (void *src)
 577 {
 578         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 579 }
 580
 581 void
 582 GainMeter::set_meter_strip_name (const char * name)
 583 {
 584         meter_metric_area.set_name (name);
 585 }
 586
 587 void
 588 GainMeter::set_fader_name (const char * 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 true;
 679
 680 }
 681
 682 gint
 683 GainMeter::meter_release(GdkEventButton* ev)
 684 {
 685
 686         if(!ignore_toggle){
 687                 if (wait_for_release){
 688                         wait_for_release = false;
 689                         set_meter_point (*(dynamic_cast<Route*>(&_io)), old_meter_point);
 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 }