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 #include "keyboard.h"
  44
  45 #include <ardour/session.h>
  46 #include <ardour/route.h>
  47
  48 #include "i18n.h"
  49
  50 using namespace ARDOUR;
  51 using namespace Gtkmm2ext;
  52 using namespace Gtk;
  53 using namespace sigc;
  54 using namespace std;
  55
  56 sigc::signal<void> GainMeter::ResetAllPeakDisplays;
  57 sigc::signal<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
  58 Pix* GainMeter::slider_pix = 0;
  59 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  60
  61 int
  62 GainMeter::setup_slider_pix ()
  63 {
  64         if ((slider_pix = get_pix (ARDOUR::find_data_file("pixmaps"), "vslider02", false)) == 0) {
  65                 error << _("Cannot create slider pixmaps") << endmsg;
  66                 return -1;
  67         }
  68
  69         slider_pix->ref ();
  70         return 0;
  71 }
  72
  73 void
  74 was_pressed ()
  75 {
  76         cerr << "was pressed\n";
  77 }
  78
  79 bool
  80 was_button (GdkEventButton* ev)
  81 {
  82         cerr << "Bp/R: " << ev->type << endl;
  83         return false;
  84 }
  85
  86 GainMeter::GainMeter (IO& io, Session& s)
  87         : _io (io),
  88           _session (s),
  89           gain_slider (0),
  90           // 0.781787 is the value needed for gain to be set to 0.
  91           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  92           gain_display (&gain_adjustment, "MixerStripGainDisplay"),
  93           gain_unit_label (_("dbFS")),
  94           meter_point_label (_("pre")),
  95           top_table (1, 2)
  96
  97 {
  98         if (slider_pix == 0) {
  99                 setup_slider_pix ();
 100         }
 101
 102         ignore_toggle = false;
 103         meter_menu = 0;
 104
 105         gain_slider = manage (new VSliderController (slider_pix,
 106                                                      &gain_adjustment,
 107                                                      & _io.midi_gain_control(),
 108                                                      false));
 109
 110         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
 111         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
 112         gain_slider->set_name ("MixerGainMeter");
 113
 114         if (_session.midi_port()) {
 115                 _io.set_midi_to_gain_function (slider_position_to_gain);
 116                 _io.set_gain_to_midi_function (gain_to_slider_position);
 117         }
 118
 119         gain_display.set_print_func (_gain_printer, this);
 120
 121         gain_unit_button.add (gain_unit_label);
 122         gain_unit_button.set_name ("MixerStripGainUnitButton");
 123         gain_unit_label.set_name ("MixerStripGainUnitButton");
 124
 125         gain_unit_button.signal_clicked().connect (ptr_fun (was_pressed));
 126
 127         meter_point_button.signal_button_press_event().connect (mem_fun (*this, &GainMeter::meter_press));
 128         meter_point_button.signal_button_release_event().connect (mem_fun (*this, &GainMeter::meter_release));
 129         g_signal_connect (meter_point_button.gobj(), "button-press-event", (void (*)()) was_button, 0);
 130         g_signal_connect (meter_point_button.gobj(), "button-release-event", (void (*)()) was_button, 0);
 131
 132
 133         top_table.set_col_spacings (2);
 134         top_table.set_homogeneous (true);
 135         top_table.attach (gain_unit_button, 0, 1, 0, 1);
 136
 137         Route* r;
 138
 139         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 140
 141                 r->meter_change.connect (mem_fun(*this, &GainMeter::meter_changed));
 142                 meter_point_button.add (meter_point_label);
 143                 meter_point_button.set_name ("MixerStripMeterPreButton");
 144                 meter_point_label.set_name ("MixerStripMeterPreButton");
 145
 146                 switch (r->meter_point()) {
 147                 case MeterInput:
 148                         meter_point_label.set_text (_("input"));
 149                         break;
 150
 151                 case MeterPreFader:
 152                         meter_point_label.set_text (_("pre"));
 153                         break;
 154
 155                 case MeterPostFader:
 156                         meter_point_label.set_text (_("post"));
 157                         break;
 158                 }
 159
 160                 /* TRANSLATORS: this string should be longest of the strings
 161                    used to describe meter points. In english, its "input".
 162                 */
 163
 164                 set_size_request_to_display_given_text (meter_point_button, _("tupni"), 2, 2);
 165
 166
 167                 top_table.attach (meter_point_button, 1, 2, 0, 1);
 168         }
 169         gain_display_box.set_spacing (2);
 170         set_size_request_to_display_given_text (gain_display_frame, "-86.0", 2, 2);
 171         gain_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 172         gain_display_frame.set_name ("BaseFrame");
 173         gain_display_frame.add (gain_display);
 174         gain_display_box.pack_start (gain_display_frame,  Gtk::PACK_SHRINK);
 175
 176         peak_display.set_name ("MixerStripPeakDisplay");
 177         peak_display.add (peak_display_label);
 178         set_size_request_to_display_given_text (peak_display_frame, "-86.0", 2, 2);
 179         peak_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 180         peak_display_frame.set_name ("BaseFrame");
 181         peak_display_frame.add (peak_display);
 182         max_peak = minus_infinity();
 183         peak_display_label.set_text (_("-inf"));
 184
 185         gain_display_box.pack_end (peak_display_frame,  Gtk::PACK_SHRINK);
 186
 187         meter_metric_area.set_size_request (25, -1);
 188         meter_metric_area.set_name ("MeterMetricsStrip");
 189
 190         meter_packer.set_spacing (2);
 191
 192         hbox.set_spacing (4);
 193         hbox.pack_start (*gain_slider, false, false, 2);
 194         hbox.pack_start (meter_packer, true, false);
 195
 196         set_spacing (4);
 197
 198         pack_start (top_table,  Gtk::PACK_SHRINK);
 199         pack_start (gain_display_box,  Gtk::PACK_SHRINK);
 200         pack_start (hbox,  Gtk::PACK_SHRINK);
 201
 202         _io.gain_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));
 207
 208         _session.MeterHoldChanged.connect (mem_fun(*this, &GainMeter::meter_hold_changed));
 209
 210         gain_changed (0);
 211         update_gain_sensitive ();
 212
 213         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 214         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 215 }
 216
 217 void
 218 GainMeter::set_width (Width w)
 219 {
 220         switch (w) {
 221         case Wide:
 222                 peak_display_frame.show_all();
 223                 break;
 224         case Narrow:
 225                 peak_display_frame.hide_all();
 226                 break;
 227         }
 228
 229         _width = w;
 230         setup_meters ();
 231 }
 232
 233 Glib::RefPtr<Gdk::Pixmap>
 234 GainMeter::render_metrics (Gtk::Widget& w)
 235 {
 236         Glib::RefPtr<Gdk::Window> win (w.get_window());
 237         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 238         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 239         gint x, y, width, height, depth;
 240         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 241         char buf[32];
 242         int theight;
 243         int twidth;
 244
 245         win->get_geometry (x, y, width, height, depth);
 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                 layout->get_pixel_size (twidth, theight);
 264
 265                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 266                 pixmap->draw_layout (fg_gc, 6, pos - (theight/2), layout);
 267         }
 268
 269         return pixmap;
 270 }
 271
 272 gint
 273 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 274 {
 275         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 276         Glib::RefPtr<Gdk::GC> fg_gc (meter_metric_area.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 277         Glib::RefPtr<Gdk::GC> bg_gc (meter_metric_area.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 278         GdkRectangle base_rect;
 279         GdkRectangle draw_rect;
 280         gint x, y, width, height, depth;
 281
 282         win->get_geometry (x, y, width, height, depth);
 283
 284         base_rect.width = width;
 285         base_rect.height = height;
 286         base_rect.x = 0;
 287         base_rect.y = 0;
 288
 289         Glib::RefPtr<Gdk::Pixmap> pixmap;
 290         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 291
 292         if (i == metric_pixmaps.end()) {
 293                 pixmap = render_metrics (meter_metric_area);
 294         } else {
 295                 pixmap = i->second;
 296         }
 297
 298         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 299         win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 300         win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 301
 302         return true;
 303 }
 304
 305 GainMeter::~GainMeter ()
 306 {
 307         if (meter_menu) {
 308                 delete meter_menu;
 309         }
 310
 311         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 312                 if ((*i).meter) {
 313                         delete (*i).meter;
 314                 }
 315         }
 316 }
 317
 318 void
 319 GainMeter::update_meters ()
 320 {
 321         vector<MeterInfo>::iterator i;
 322         uint32_t n;
 323         float peak;
 324         char buf[32];
 325
 326         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 327                 if ((*i).packed) {
 328                         peak = _io.peak_input_power (n);
 329
 330                         if (_session.meter_falloff() == 0.0f || peak > (*i).meter->get_user_level()) {
 331                                 (*i).meter->set (log_meter (peak), peak);
 332                         }
 333
 334                         if (peak > max_peak) {
 335                                 max_peak = peak;
 336                                 /* set peak display */
 337                                 snprintf (buf, sizeof(buf), "%.1f", max_peak);
 338                                 peak_display_label.set_text (buf);
 339
 340                                 if (max_peak >= 0.0f) {
 341                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 342                                 }
 343                         }
 344                 }
 345         }
 346
 347 }
 348
 349 void
 350 GainMeter::update_meters_falloff ()
 351 {
 352         vector<MeterInfo>::iterator i;
 353         uint32_t n;
 354         float dbpeak;
 355
 356         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 357                 if ((*i).packed) {
 358                         // just do falloff
 359                         //peak = (*i).meter->get_level() * _falloff_rate;
 360                         dbpeak = (*i).meter->get_user_level() - _session.meter_falloff();
 361
 362                         dbpeak = std::max(dbpeak, -200.0f);
 363
 364                         // cerr << "tmplevel: " << tmplevel << endl;
 365                         (*i).meter->set (log_meter (dbpeak), dbpeak);
 366                 }
 367         }
 368
 369 }
 370
 371
 372 void
 373 GainMeter::meter_hold_changed()
 374 {
 375         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::meter_hold_changed));
 376
 377         vector<MeterInfo>::iterator i;
 378         uint32_t n;
 379
 380         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 381
 382                 (*i).meter->set_hold_count ((uint32_t) floor(_session.meter_hold()));
 383         }
 384 }
 385
 386 void
 387 GainMeter::hide_all_meters ()
 388 {
 389         bool remove_metric_area = false;
 390
 391         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 392                 if ((*i).packed) {
 393                         remove_metric_area = true;
 394                         meter_packer.remove (*((*i).meter));
 395                         (*i).packed = false;
 396                 }
 397         }
 398
 399         if (remove_metric_area) {
 400                 if (meter_metric_area.get_parent()) {
 401                         meter_packer.remove (meter_metric_area);
 402                 }
 403         }
 404 }
 405
 406 void
 407 GainMeter::setup_meters ()
 408 {
 409         uint32_t nmeters = _io.n_outputs();
 410         guint16 width;
 411
 412         hide_all_meters ();
 413
 414         Route* r;
 415
 416         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 417
 418                 switch (r->meter_point()) {
 419                 case MeterPreFader:
 420                 case MeterInput:
 421                         nmeters = r->n_inputs();
 422                         break;
 423                 case MeterPostFader:
 424                         nmeters = r->n_outputs();
 425                         break;
 426                 }
 427
 428         } else {
 429
 430                 nmeters = _io.n_outputs();
 431
 432         }
 433
 434         if (nmeters == 0) {
 435                 return;
 436         }
 437
 438         if (nmeters <= 2) {
 439                 width = regular_meter_width;
 440         } else {
 441                 width = thin_meter_width;
 442         }
 443
 444         while (meters.size() < nmeters) {
 445                 meters.push_back (MeterInfo());
 446         }
 447
 448         for (uint32_t n = 0; n < nmeters; ++n) {
 449                 if (meters[n].width != width) {
 450                         delete meters[n].meter;
 451                         meters[n].meter = new FastMeter ((uint32_t) floor (_session.meter_hold()), width, FastMeter::Vertical);
 452                         meters[n].width = width;
 453
 454                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 455                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 456                 }
 457
 458                 meter_packer.pack_start (*meters[n].meter, Gtk::PACK_SHRINK);
 459                 meters[n].meter->show_all ();
 460                 meters[n].packed = true;
 461         }
 462
 463         if (_width == Wide) {
 464                 meter_packer.pack_start (meter_metric_area, Gtk::PACK_SHRINK);
 465                 meter_metric_area.show_all ();
 466         }
 467 }
 468
 469 gint
 470 GainMeter::peak_button_release (GdkEventButton* ev)
 471 {
 472         /* reset peak label */
 473
 474         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
 475                 ResetAllPeakDisplays ();
 476         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 477                 Route* r;
 478                 if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 479                         ResetGroupPeakDisplays (r->mix_group());
 480                 }
 481         } else {
 482                 reset_peak_display ();
 483         }
 484         return TRUE;
 485 }
 486
 487 void
 488 GainMeter::reset_peak_display ()
 489 {
 490         max_peak = minus_infinity();
 491         peak_display_label.set_text (_("-inf"));
 492         peak_display.set_name ("MixerStripPeakDisplay");
 493 }
 494
 495 void
 496 GainMeter::reset_group_peak_display (RouteGroup* group)
 497 {
 498         Route* r;
 499         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 500                 if (group == r->mix_group()) {
 501                         reset_peak_display ();
 502                 }
 503         }
 504 }
 505
 506 gint
 507 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 508 {
 509         switch (ev->button) {
 510         case 1:
 511                 meters[which].meter->clear();
 512                 max_peak = minus_infinity();
 513                 peak_display_label.set_text (_("-inf"));
 514                 peak_display.set_name ("MixerStripPeakDisplay");
 515                 break;
 516
 517         case 3:
 518                 // popup_meter_menu (ev);
 519                 break;
 520         };
 521
 522         return TRUE;
 523 }
 524
 525 void
 526 GainMeter::popup_meter_menu (GdkEventButton *ev)
 527 {
 528         using namespace Menu_Helpers;
 529
 530         if (meter_menu == 0) {
 531                 meter_menu = new Gtk::Menu;
 532                 MenuList& items = meter_menu->items();
 533
 534                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 535                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 536                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 537                 items.push_back (SeparatorElem());
 538                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 539                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 540                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 541         }
 542
 543         meter_menu->popup (1, ev->time);
 544 }
 545
 546 void
 547 GainMeter::_gain_printer (char buf[32], Gtk::Adjustment& adj, void *arg)
 548 {
 549         static_cast<GainMeter *>(arg)->gain_printer (buf, adj);
 550 }
 551
 552 void
 553 GainMeter::gain_printer (char buf[32], Gtk::Adjustment& adj)
 554 {
 555         float v = adj.get_value();
 556
 557         if (v == 0.0) {
 558                 strcpy (buf, _("-inf"));
 559         } else {
 560                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 561         }
 562 }
 563
 564 void
 565 GainMeter::gain_adjusted ()
 566 {
 567         if (!ignore_toggle) {
 568                 _io.set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 569         }
 570 }
 571
 572 void
 573 GainMeter::effective_gain_display ()
 574 {
 575         gfloat value = gain_to_slider_position (_io.effective_gain());
 576
 577         if (gain_adjustment.get_value() != value) {
 578                 ignore_toggle = true;
 579                 gain_adjustment.set_value (value);
 580                 ignore_toggle = false;
 581         }
 582 }
 583
 584 void
 585 GainMeter::gain_changed (void *src)
 586 {
 587         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 588 }
 589
 590 void
 591 GainMeter::set_meter_strip_name (const char * name)
 592 {
 593         meter_metric_area.set_name (name);
 594 }
 595
 596 void
 597 GainMeter::set_fader_name (const char * name)
 598 {
 599         gain_slider->set_name (name);
 600 }
 601
 602 void
 603 GainMeter::update_gain_sensitive ()
 604 {
 605         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io.gain_automation_state() & Play));
 606 }
 607
 608
 609 static MeterPoint
 610 next_meter_point (MeterPoint mp)
 611 {
 612         switch (mp) {
 613         case MeterInput:
 614                 return MeterPreFader;
 615                 break;
 616
 617         case MeterPreFader:
 618                 return MeterPostFader;
 619                 break;
 620
 621         case MeterPostFader:
 622                 return MeterInput;
 623                 break;
 624         }
 625         /*NOTREACHED*/
 626         return MeterInput;
 627 }
 628
 629 gint
 630 GainMeter::meter_press(GdkEventButton* ev)
 631 {
 632         Route* _route;
 633
 634         wait_for_release = false;
 635
 636         cerr << "meter point button press\n";
 637
 638         if ((_route = dynamic_cast<Route*>(&_io)) == 0) {
 639                 return FALSE;
 640         }
 641
 642         if (!ignore_toggle) {
 643
 644                 if (Keyboard::is_context_menu_event (ev)) {
 645
 646                         // no menu at this time.
 647
 648                 } else {
 649
 650                         if (ev->button == 2) {
 651
 652                                 // ctrl-button2 click is the midi binding click
 653                                 // button2-click is "momentary"
 654
 655                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
 656                                         wait_for_release = true;
 657                                         old_meter_point = _route->meter_point ();
 658                                 }
 659                         }
 660
 661                         if (ev->button == 1 || ev->button == 2) {
 662
 663                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
 664
 665                                         /* ctrl-shift-click applies change to all routes */
 666
 667                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 668
 669                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 670
 671                                         /* ctrl-click: solo mix group.
 672                                            ctrl-button2 is MIDI learn.
 673                                         */
 674
 675                                         if (ev->button == 1) {
 676                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 677                                         }
 678
 679                                 } else {
 680
 681                                         /* click: solo this route */
 682
 683                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 684                                 }
 685                         }
 686                 }
 687         }
 688
 689         return true;
 690
 691 }
 692
 693 gint
 694 GainMeter::meter_release(GdkEventButton* ev)
 695 {
 696         cerr << "meter point button release\n";
 697
 698         if(!ignore_toggle){
 699                 if (wait_for_release){
 700                         wait_for_release = false;
 701                         set_meter_point (*(dynamic_cast<Route*>(&_io)), old_meter_point);
 702                 }
 703         }
 704         return true;
 705 }
 706
 707 void
 708 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 709 {
 710         route.set_meter_point (mp, this);
 711 }
 712
 713 void
 714 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 715 {
 716         RouteGroup* mix_group;
 717
 718         if((mix_group = route.mix_group()) != 0){
 719                 mix_group->apply (&Route::set_meter_point, mp, this);
 720         } else {
 721                 route.set_meter_point (mp, this);
 722         }
 723 }
 724
 725 void
 726 GainMeter::meter_changed (void *src)
 727 {
 728         Route* r;
 729
 730         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::meter_changed), src));
 731
 732         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 733
 734                 switch (r->meter_point()) {
 735                 case MeterInput:
 736                         meter_point_label.set_text (_("input"));
 737                         break;
 738
 739                 case MeterPreFader:
 740                         meter_point_label.set_text (_("pre"));
 741                         break;
 742
 743                 case MeterPostFader:
 744                         meter_point_label.set_text (_("post"));
 745                         break;
 746                 }
 747
 748                 setup_meters ();
 749         }
 750 }
 751
 752 void
 753 GainMeter::meter_point_clicked ()
 754 {
 755         Route* r;
 756
 757         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 758
 759         }
 760 }
 761
 762 gint
 763 GainMeter::start_gain_touch (GdkEventButton* ev)
 764 {
 765         _io.start_gain_touch ();
 766         return FALSE;
 767 }
 768
 769 gint
 770 GainMeter::end_gain_touch (GdkEventButton* ev)
 771 {
 772         _io.end_gain_touch ();
 773         return FALSE;
 774 }