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 #include "misc_xpms"
  50
  51 using namespace ARDOUR;
  52 using namespace Gtkmm2ext;
  53 using namespace Gtk;
  54 using namespace sigc;
  55 using namespace std;
  56
  57 sigc::signal<void> GainMeter::ResetAllPeakDisplays;
  58 sigc::signal<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
  59 Pix* GainMeter::slider_pix = 0;
  60 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  61
  62 int
  63 GainMeter::setup_slider_pix ()
  64 {
  65         vector<const char **> xpms;
  66
  67         xpms.push_back (vslider_rail_xpm);
  68         xpms.push_back (vslider_slider_xpm);
  69
  70         if ((slider_pix = get_pix ("sliders", xpms, false)) == 0) {
  71                 error << _("Cannot create slider pixmaps") << endmsg;
  72                 return -1;
  73         }
  74
  75         slider_pix->ref ();
  76         return 0;
  77 }
  78
  79 void
  80 was_pressed ()
  81 {
  82         cerr << "was pressed\n";
  83 }
  84
  85 GainMeter::GainMeter (IO& io, Session& s)
  86         : _io (io),
  87           _session (s),
  88           gain_slider (0),
  89           // 0.781787 is the value needed for gain to be set to 0.
  90           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  91           gain_display (&gain_adjustment, "MixerStripGainDisplay"),
  92           gain_unit_label (_("dbFS")),
  93           meter_point_label (_("pre")),
  94           top_table (1, 2)
  95
  96 {
  97         if (slider_pix == 0) {
  98                 setup_slider_pix ();
  99         }
 100
 101         ignore_toggle = false;
 102         meter_menu = 0;
 103
 104         gain_slider = manage (new VSliderController (slider_pix,
 105                                                      &gain_adjustment,
 106                                                      & _io.midi_gain_control(),
 107                                                      false));
 108
 109         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
 110         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
 111         gain_slider->set_name ("MixerGainMeter");
 112
 113         if (_session.midi_port()) {
 114                 _io.set_midi_to_gain_function (slider_position_to_gain);
 115                 _io.set_gain_to_midi_function (gain_to_slider_position);
 116         }
 117
 118         gain_display.set_print_func (_gain_printer, this);
 119
 120         gain_unit_button.add (gain_unit_label);
 121         gain_unit_button.set_name ("MixerStripGainUnitButton");
 122         gain_unit_label.set_name ("MixerStripGainUnitButton");
 123
 124         gain_unit_button.signal_clicked().connect (ptr_fun (was_pressed));
 125
 126         top_table.set_col_spacings (2);
 127         top_table.set_homogeneous (true);
 128         top_table.attach (gain_unit_button, 0, 1, 0, 1);
 129
 130         Route* r;
 131
 132         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 133
 134                 r->meter_change.connect (mem_fun(*this, &GainMeter::meter_changed));
 135                 meter_point_button.add (meter_point_label);
 136                 meter_point_button.set_name ("MixerStripMeterPreButton");
 137                 meter_point_label.set_name ("MixerStripMeterPreButton");
 138
 139                 switch (r->meter_point()) {
 140                 case MeterInput:
 141                         meter_point_label.set_text (_("input"));
 142                         break;
 143
 144                 case MeterPreFader:
 145                         meter_point_label.set_text (_("pre"));
 146                         break;
 147
 148                 case MeterPostFader:
 149                         meter_point_label.set_text (_("post"));
 150                         break;
 151                 }
 152
 153                 /* TRANSLATORS: this string should be longest of the strings
 154                    used to describe meter points. In english, its "input".
 155                 */
 156
 157                 set_size_request_to_display_given_text (meter_point_button, _("tupni"), 2, 2);
 158
 159                 meter_point_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::meter_press));
 160                 meter_point_button.signal_button_release_event().connect (mem_fun(*this, &GainMeter::meter_release));
 161
 162                 top_table.attach (meter_point_button, 1, 2, 0, 1);
 163         }
 164         gain_display_box.set_spacing (2);
 165         set_size_request_to_display_given_text (gain_display_frame, "-86.0", 2, 2);
 166         gain_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 167         gain_display_frame.set_name ("BaseFrame");
 168         gain_display_frame.add (gain_display);
 169         gain_display_box.pack_start (gain_display_frame,  Gtk::PACK_SHRINK);
 170
 171         peak_display.set_name ("MixerStripPeakDisplay");
 172         peak_display.add (peak_display_label);
 173         set_size_request_to_display_given_text (peak_display_frame, "-86.0", 2, 2);
 174         peak_display_frame.set_shadow_type (Gtk::SHADOW_IN);
 175         peak_display_frame.set_name ("BaseFrame");
 176         peak_display_frame.add (peak_display);
 177         max_peak = minus_infinity();
 178         peak_display_label.set_text (_("-inf"));
 179
 180         gain_display_box.pack_end (peak_display_frame,  Gtk::PACK_SHRINK);
 181
 182         meter_metric_area.set_size_request (25, -1);
 183         meter_metric_area.set_name ("MeterMetricsStrip");
 184
 185         meter_packer.set_spacing (2);
 186
 187         hbox.set_spacing (4);
 188         hbox.pack_start (*gain_slider, false, false, 2);
 189         hbox.pack_start (meter_packer, true, false);
 190
 191         set_spacing (4);
 192
 193         pack_start (top_table,  Gtk::PACK_SHRINK);
 194         pack_start (gain_display_box,  Gtk::PACK_SHRINK);
 195         pack_start (hbox,  Gtk::PACK_SHRINK);
 196
 197         _io.gain_changed.connect (mem_fun(*this, &GainMeter::gain_changed));
 198
 199         meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 200         gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeter::gain_adjusted));
 201         peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeter::peak_button_release));
 202
 203         _session.MeterHoldChanged.connect (mem_fun(*this, &GainMeter::meter_hold_changed));
 204
 205         gain_changed (0);
 206         update_gain_sensitive ();
 207
 208         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 209         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 210 }
 211
 212 void
 213 GainMeter::set_width (Width w)
 214 {
 215         switch (w) {
 216         case Wide:
 217                 peak_display_frame.show_all();
 218                 break;
 219         case Narrow:
 220                 peak_display_frame.hide_all();
 221                 break;
 222         }
 223
 224         _width = w;
 225         setup_meters ();
 226 }
 227
 228 Glib::RefPtr<Gdk::Pixmap>
 229 GainMeter::render_metrics (Gtk::Widget& w)
 230 {
 231         Glib::RefPtr<Gdk::Window> win (w.get_window());
 232         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 233         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 234         gint x, y, width, height, depth;
 235         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 236         char buf[32];
 237         int theight;
 238         int twidth;
 239
 240         win->get_geometry (x, y, width, height, depth);
 241
 242         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 243
 244         metric_pixmaps[w.get_name()] = pixmap;
 245
 246         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 247
 248         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 249
 250         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 251
 252                 float fraction = log_meter (db_points[i]);
 253                 gint pos = height - (gint) floor (height * fraction);
 254
 255                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 256
 257                 layout->set_text (buf);
 258                 layout->get_pixel_size (twidth, theight);
 259
 260                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 261                 pixmap->draw_layout (fg_gc, 6, pos - (theight/2), layout);
 262         }
 263
 264         return pixmap;
 265 }
 266
 267 gint
 268 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 269 {
 270         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 271         Glib::RefPtr<Gdk::GC> fg_gc (meter_metric_area.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 272         Glib::RefPtr<Gdk::GC> bg_gc (meter_metric_area.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 273         GdkRectangle base_rect;
 274         GdkRectangle draw_rect;
 275         gint x, y, width, height, depth;
 276
 277         win->get_geometry (x, y, width, height, depth);
 278
 279         base_rect.width = width;
 280         base_rect.height = height;
 281         base_rect.x = 0;
 282         base_rect.y = 0;
 283
 284         Glib::RefPtr<Gdk::Pixmap> pixmap;
 285         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 286
 287         if (i == metric_pixmaps.end()) {
 288                 pixmap = render_metrics (meter_metric_area);
 289         } else {
 290                 pixmap = i->second;
 291         }
 292
 293         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 294         win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 295         win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 296
 297         return true;
 298 }
 299
 300 GainMeter::~GainMeter ()
 301 {
 302         if (meter_menu) {
 303                 delete meter_menu;
 304         }
 305
 306         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 307                 if ((*i).meter) {
 308                         delete (*i).meter;
 309                 }
 310         }
 311 }
 312
 313 void
 314 GainMeter::update_meters ()
 315 {
 316         vector<MeterInfo>::iterator i;
 317         uint32_t n;
 318         float peak;
 319         char buf[32];
 320
 321         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 322                 if ((*i).packed) {
 323                         peak = _io.peak_input_power (n);
 324
 325                         if (_session.meter_falloff() == 0.0f || peak > (*i).meter->get_user_level()) {
 326                                 (*i).meter->set (log_meter (peak), peak);
 327                         }
 328
 329                         if (peak > max_peak) {
 330                                 max_peak = peak;
 331                                 /* set peak display */
 332                                 snprintf (buf, sizeof(buf), "%.1f", max_peak);
 333                                 peak_display_label.set_text (buf);
 334
 335                                 if (max_peak >= 0.0f) {
 336                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 337                                 }
 338                         }
 339                 }
 340         }
 341
 342 }
 343
 344 void
 345 GainMeter::update_meters_falloff ()
 346 {
 347         vector<MeterInfo>::iterator i;
 348         uint32_t n;
 349         float dbpeak;
 350
 351         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 352                 if ((*i).packed) {
 353                         // just do falloff
 354                         //peak = (*i).meter->get_level() * _falloff_rate;
 355                         dbpeak = (*i).meter->get_user_level() - _session.meter_falloff();
 356
 357                         dbpeak = std::max(dbpeak, -200.0f);
 358
 359                         // cerr << "tmplevel: " << tmplevel << endl;
 360                         (*i).meter->set (log_meter (dbpeak), dbpeak);
 361                 }
 362         }
 363
 364 }
 365
 366
 367 void
 368 GainMeter::meter_hold_changed()
 369 {
 370         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::meter_hold_changed));
 371
 372         vector<MeterInfo>::iterator i;
 373         uint32_t n;
 374
 375         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 376
 377                 (*i).meter->set_hold_count ((uint32_t) floor(_session.meter_hold()));
 378         }
 379 }
 380
 381 void
 382 GainMeter::hide_all_meters ()
 383 {
 384         bool remove_metric_area = false;
 385
 386         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 387                 if ((*i).packed) {
 388                         remove_metric_area = true;
 389                         meter_packer.remove (*((*i).meter));
 390                         (*i).packed = false;
 391                 }
 392         }
 393
 394         if (remove_metric_area) {
 395                 if (meter_metric_area.get_parent()) {
 396                         meter_packer.remove (meter_metric_area);
 397                 }
 398         }
 399 }
 400
 401 void
 402 GainMeter::setup_meters ()
 403 {
 404         uint32_t nmeters = _io.n_outputs();
 405         guint16 width;
 406
 407         hide_all_meters ();
 408
 409         Route* r;
 410
 411         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 412
 413                 switch (r->meter_point()) {
 414                 case MeterPreFader:
 415                 case MeterInput:
 416                         nmeters = r->n_inputs();
 417                         break;
 418                 case MeterPostFader:
 419                         nmeters = r->n_outputs();
 420                         break;
 421                 }
 422
 423         } else {
 424
 425                 nmeters = _io.n_outputs();
 426
 427         }
 428
 429         if (nmeters == 0) {
 430                 return;
 431         }
 432
 433         if (nmeters <= 2) {
 434                 width = regular_meter_width;
 435         } else {
 436                 width = thin_meter_width;
 437         }
 438
 439         while (meters.size() < nmeters) {
 440                 meters.push_back (MeterInfo());
 441         }
 442
 443         for (uint32_t n = 0; n < nmeters; ++n) {
 444                 if (meters[n].width != width) {
 445                         delete meters[n].meter;
 446                         meters[n].meter = new FastMeter ((uint32_t) floor (_session.meter_hold()), width, FastMeter::Vertical);
 447                         meters[n].width = width;
 448
 449                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 450                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 451                 }
 452
 453                 meter_packer.pack_start (*meters[n].meter, Gtk::PACK_SHRINK);
 454                 meters[n].meter->show_all ();
 455                 meters[n].packed = true;
 456         }
 457
 458         if (_width == Wide) {
 459                 meter_packer.pack_start (meter_metric_area, Gtk::PACK_SHRINK);
 460                 meter_metric_area.show_all ();
 461         }
 462 }
 463
 464 gint
 465 GainMeter::peak_button_release (GdkEventButton* ev)
 466 {
 467         /* reset peak label */
 468
 469         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
 470                 ResetAllPeakDisplays ();
 471         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 472                 Route* r;
 473                 if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 474                         ResetGroupPeakDisplays (r->mix_group());
 475                 }
 476         } else {
 477                 reset_peak_display ();
 478         }
 479         return TRUE;
 480 }
 481
 482 void
 483 GainMeter::reset_peak_display ()
 484 {
 485         max_peak = minus_infinity();
 486         peak_display_label.set_text (_("-inf"));
 487         peak_display.set_name ("MixerStripPeakDisplay");
 488 }
 489
 490 void
 491 GainMeter::reset_group_peak_display (RouteGroup* group)
 492 {
 493         Route* r;
 494         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 495                 if (group == r->mix_group()) {
 496                         reset_peak_display ();
 497                 }
 498         }
 499 }
 500
 501 gint
 502 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 503 {
 504         switch (ev->button) {
 505         case 1:
 506                 meters[which].meter->clear();
 507                 max_peak = minus_infinity();
 508                 peak_display_label.set_text (_("-inf"));
 509                 peak_display.set_name ("MixerStripPeakDisplay");
 510                 break;
 511
 512         case 3:
 513                 // popup_meter_menu (ev);
 514                 break;
 515         };
 516
 517         return TRUE;
 518 }
 519
 520 void
 521 GainMeter::popup_meter_menu (GdkEventButton *ev)
 522 {
 523         using namespace Menu_Helpers;
 524
 525         if (meter_menu == 0) {
 526                 meter_menu = new Gtk::Menu;
 527                 MenuList& items = meter_menu->items();
 528
 529                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 530                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 531                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 532                 items.push_back (SeparatorElem());
 533                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 534                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 535                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 536         }
 537
 538         meter_menu->popup (1, ev->time);
 539 }
 540
 541 void
 542 GainMeter::_gain_printer (char buf[32], Gtk::Adjustment& adj, void *arg)
 543 {
 544         static_cast<GainMeter *>(arg)->gain_printer (buf, adj);
 545 }
 546
 547 void
 548 GainMeter::gain_printer (char buf[32], Gtk::Adjustment& adj)
 549 {
 550         float v = adj.get_value();
 551
 552         if (v == 0.0) {
 553                 strcpy (buf, _("-inf"));
 554         } else {
 555                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 556         }
 557 }
 558
 559 void
 560 GainMeter::gain_adjusted ()
 561 {
 562         if (!ignore_toggle) {
 563                 _io.set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 564         }
 565 }
 566
 567 void
 568 GainMeter::effective_gain_display ()
 569 {
 570         gfloat value = gain_to_slider_position (_io.effective_gain());
 571
 572         if (gain_adjustment.get_value() != value) {
 573                 ignore_toggle = true;
 574                 gain_adjustment.set_value (value);
 575                 ignore_toggle = false;
 576         }
 577 }
 578
 579 void
 580 GainMeter::gain_changed (void *src)
 581 {
 582         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 583 }
 584
 585 void
 586 GainMeter::set_meter_strip_name (const char * name)
 587 {
 588         meter_metric_area.set_name (name);
 589 }
 590
 591 void
 592 GainMeter::set_fader_name (const char * name)
 593 {
 594         gain_slider->set_name (name);
 595 }
 596
 597 void
 598 GainMeter::update_gain_sensitive ()
 599 {
 600         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io.gain_automation_state() & Play));
 601 }
 602
 603
 604 static MeterPoint
 605 next_meter_point (MeterPoint mp)
 606 {
 607         switch (mp) {
 608         case MeterInput:
 609                 return MeterPreFader;
 610                 break;
 611
 612         case MeterPreFader:
 613                 return MeterPostFader;
 614                 break;
 615
 616         case MeterPostFader:
 617                 return MeterInput;
 618                 break;
 619         }
 620         /*NOTREACHED*/
 621         return MeterInput;
 622 }
 623
 624 gint
 625 GainMeter::meter_press(GdkEventButton* ev)
 626 {
 627         Route* _route;
 628
 629         wait_for_release = false;
 630
 631         cerr << "meter point button press\n";
 632
 633         if ((_route = dynamic_cast<Route*>(&_io)) == 0) {
 634                 return FALSE;
 635         }
 636
 637         if (!ignore_toggle) {
 638
 639                 if (Keyboard::is_context_menu_event (ev)) {
 640
 641                         // no menu at this time.
 642
 643                 } else {
 644
 645                         if (ev->button == 2) {
 646
 647                                 // ctrl-button2 click is the midi binding click
 648                                 // button2-click is "momentary"
 649
 650                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
 651                                         wait_for_release = true;
 652                                         old_meter_point = _route->meter_point ();
 653                                 }
 654                         }
 655
 656                         if (ev->button == 1 || ev->button == 2) {
 657
 658                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
 659
 660                                         /* ctrl-shift-click applies change to all routes */
 661
 662                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 663
 664                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 665
 666                                         /* ctrl-click: solo mix group.
 667                                            ctrl-button2 is MIDI learn.
 668                                         */
 669
 670                                         if (ev->button == 1) {
 671                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 672                                         }
 673
 674                                 } else {
 675
 676                                         /* click: solo this route */
 677
 678                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 679                                 }
 680                         }
 681                 }
 682         }
 683
 684         return true;
 685
 686 }
 687
 688 gint
 689 GainMeter::meter_release(GdkEventButton* ev)
 690 {
 691         cerr << "meter point button release\n";
 692
 693         if(!ignore_toggle){
 694                 if (wait_for_release){
 695                         wait_for_release = false;
 696                         set_meter_point (*(dynamic_cast<Route*>(&_io)), old_meter_point);
 697                 }
 698         }
 699         return true;
 700 }
 701
 702 void
 703 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 704 {
 705         route.set_meter_point (mp, this);
 706 }
 707
 708 void
 709 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 710 {
 711         RouteGroup* mix_group;
 712
 713         if((mix_group = route.mix_group()) != 0){
 714                 mix_group->apply (&Route::set_meter_point, mp, this);
 715         } else {
 716                 route.set_meter_point (mp, this);
 717         }
 718 }
 719
 720 void
 721 GainMeter::meter_changed (void *src)
 722 {
 723         Route* r;
 724
 725         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::meter_changed), src));
 726
 727         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 728
 729                 switch (r->meter_point()) {
 730                 case MeterInput:
 731                         meter_point_label.set_text (_("input"));
 732                         break;
 733
 734                 case MeterPreFader:
 735                         meter_point_label.set_text (_("pre"));
 736                         break;
 737
 738                 case MeterPostFader:
 739                         meter_point_label.set_text (_("post"));
 740                         break;
 741                 }
 742
 743                 setup_meters ();
 744         }
 745 }
 746
 747 void
 748 GainMeter::meter_point_clicked ()
 749 {
 750         Route* r;
 751
 752         if ((r = dynamic_cast<Route*> (&_io)) != 0) {
 753
 754         }
 755 }
 756
 757 gint
 758 GainMeter::start_gain_touch (GdkEventButton* ev)
 759 {
 760         _io.start_gain_touch ();
 761         return FALSE;
 762 }
 763
 764 gint
 765 GainMeter::end_gain_touch (GdkEventButton* ev)
 766 {
 767         _io.end_gain_touch ();
 768         return FALSE;
 769 }