gtk2_ardour/gain_meter.cc

   1 /*
   2   Copyright (C) 2002 Paul Davis
   3
   4   This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation; either version 2 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program; if not, write to the Free Software
  16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <limits.h>
  21
  22 #include <ardour/io.h>
  23 #include <ardour/route.h>
  24 #include <ardour/route_group.h>
  25 #include <ardour/session.h>
  26 #include <ardour/session_route.h>
  27 #include <ardour/dB.h>
  28
  29 #include <gtkmm/style.h>
  30 #include <gdkmm/color.h>
  31 #include <gtkmm2ext/utils.h>
  32 #include <gtkmm2ext/fastmeter.h>
  33 #include <gtkmm2ext/stop_signal.h>
  34 #include <gtkmm2ext/barcontroller.h>
  35 #include <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 #include "public_editor.h"
  45
  46 #include <ardour/session.h>
  47 #include <ardour/route.h>
  48 #include <ardour/meter.h>
  49
  50 #include "i18n.h"
  51
  52 using namespace ARDOUR;
  53 using namespace PBD;
  54 using namespace Gtkmm2ext;
  55 using namespace Gtk;
  56 using namespace sigc;
  57 using namespace std;
  58
  59 sigc::signal<void> GainMeter::ResetAllPeakDisplays;
  60 sigc::signal<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
  61 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
  62 Glib::RefPtr<Gdk::Pixbuf> GainMeter::rail;
  63 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  64
  65 int
  66 GainMeter::setup_slider_pix ()
  67 {
  68         slider = ::get_icon ("fader_belt");
  69         return 0;
  70 }
  71
  72 GainMeter::GainMeter (boost::shared_ptr<IO> io, Session& s)
  73         : _io (io),
  74           _session (s),
  75           gain_slider (0),
  76           // 0.781787 is the value needed for gain to be set to 0.
  77           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  78           gain_automation_style_button (""),
  79           gain_automation_state_button ("")
  80
  81 {
  82         if (slider == 0) {
  83                 setup_slider_pix ();
  84         }
  85
  86         ignore_toggle = false;
  87         meter_menu = 0;
  88         next_release_selects = false;
  89         style_changed = true;
  90
  91         gain_slider = manage (new VSliderController (slider,
  92                                                      &gain_adjustment,
  93                                                      _io->gain_control(),
  94                                                      false));
  95
  96         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
  97         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
  98         gain_slider->set_name ("GainFader");
  99
 100         gain_display.set_name ("MixerStripGainDisplay");
 101         gain_display.set_has_frame (false);
 102         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 103         gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
 104         gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 105         gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 106
 107         gain_display_box.set_name ("MeterMetricsStrip");
 108         gain_display_box.set_homogeneous (true);
 109         gain_display_box.set_spacing (2);
 110         gain_display_box.pack_start (gain_display, true, true);
 111
 112         peak_display.set_name ("MixerStripPeakDisplay");
 113 //      peak_display.set_has_frame (false);
 114 //      peak_display.set_editable (false);
 115         set_size_request_to_display_given_text  (peak_display, "-80.g", 2, 6); /* note the descender */
 116         max_peak = minus_infinity();
 117         peak_display.set_label (_("-inf"));
 118         peak_display.unset_flags (Gtk::CAN_FOCUS);
 119
 120         meter_metric_area.set_name ("MeterMetricsStrip");
 121         set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
 122
 123         meter_packer.set_spacing (2);
 124
 125         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 126         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 127
 128         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
 129         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
 130
 131         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 132         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 133
 134         gain_automation_state_button.set_size_request(15, 15);
 135         gain_automation_style_button.set_size_request(15, 15);
 136
 137         HBox* fader_centering_box = manage (new HBox);
 138         fader_centering_box->pack_start (*gain_slider, true, false);
 139
 140         fader_vbox = manage (new Gtk::VBox());
 141         fader_vbox->set_spacing (0);
 142         fader_vbox->pack_start (*fader_centering_box, false, false, 0);
 143
 144         hbox.set_spacing (2);
 145
 146         if (_io->default_type() == ARDOUR::DataType::AUDIO) {
 147                 hbox.pack_start (*fader_vbox, true, true);
 148         }
 149
 150         set_width (Narrow);
 151
 152         Route* r;
 153
 154         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 155
 156                 /*
 157                    if we have a route (ie. we're not the click),
 158                    pack some route-dependent stuff.
 159                 */
 160
 161                 gain_display_box.pack_end (peak_display, true, true);
 162
 163                 hbox.pack_end (meter_packer, true, true);
 164
 165                 using namespace Menu_Helpers;
 166
 167                 gain_astate_menu.items().push_back (MenuElem (_("Manual"),
 168                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Off)));
 169                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 170                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Play)));
 171                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 172                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Write)));
 173                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 174                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Touch)));
 175
 176                 gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 177                 gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 178
 179                 gain_astate_menu.set_name ("ArdourContextMenu");
 180                 gain_astyle_menu.set_name ("ArdourContextMenu");
 181
 182                 gain_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_style_button_event), false);
 183                 gain_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_state_button_event), false);
 184
 185                 r->gain_automation_curve().automation_state_changed.connect (mem_fun(*this, &GainMeter::gain_automation_state_changed));
 186                 r->gain_automation_curve().automation_style_changed.connect (mem_fun(*this, &GainMeter::gain_automation_style_changed));
 187                 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 188
 189                 gain_automation_state_changed ();
 190         }
 191
 192         set_spacing (2);
 193
 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), false);
 202         gain_display.signal_key_press_event().connect (mem_fun(*this, &GainMeter::gain_key_press), false);
 203
 204         Config->ParameterChanged.connect (mem_fun (*this, &GainMeter::parameter_changed));
 205
 206         gain_changed (0);
 207         show_gain ();
 208
 209         update_gain_sensitive ();
 210
 211         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 212         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 213
 214         ThemeChanged.connect (mem_fun(*this, &GainMeter::redraw_pixmaps));
 215 }
 216
 217 void
 218 GainMeter::set_width (Width w)
 219 {
 220         switch (w) {
 221         case Wide:
 222                 peak_display.show();
 223                 break;
 224         case Narrow:
 225                 peak_display.hide();
 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         //cerr << "GainMeter::render_metrics() called, red = " << w.get_style()->get_bg(Gtk::STATE_NORMAL).get_red() << endl;//DEBUG
 237         Glib::RefPtr<Gdk::Window> win (w.get_window());
 238         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 239         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 240         gint width, height;
 241         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 242         char buf[32];
 243
 244         win->get_size (width, height);
 245
 246         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 247
 248         metric_pixmaps[w.get_name()] = pixmap;
 249
 250         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 251
 252         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 253
 254         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 255
 256                 float fraction = log_meter (db_points[i]);
 257                 gint pos = height - (gint) floor (height * fraction);
 258
 259                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 260
 261                 layout->set_text (buf);
 262
 263                 /* we want logical extents, not ink extents here */
 264
 265                 int width, height;
 266                 layout->get_pixel_size (width, height);
 267
 268                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 269                 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
 270         }
 271
 272         return pixmap;
 273 }
 274
 275 gint
 276 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 277 {
 278         /* Only draw dB scale if we're metering audio */
 279         if (_io->n_inputs().n_audio() + _io->n_outputs().n_audio() == 0)
 280                 return true;
 281
 282         static Glib::RefPtr<Gtk::Style> meter_style;
 283
 284         if (style_changed) {
 285                 meter_style = meter_metric_area.get_style();
 286         }
 287
 288         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 289         Glib::RefPtr<Gdk::GC> fg_gc (meter_style->get_fg_gc (Gtk::STATE_NORMAL));
 290         Glib::RefPtr<Gdk::GC> bg_gc (meter_style->get_bg_gc (Gtk::STATE_NORMAL));
 291
 292         GdkRectangle base_rect;
 293         GdkRectangle draw_rect;
 294         gint width, height;
 295
 296         win->get_size (width, height);
 297
 298         base_rect.width = width;
 299         base_rect.height = height;
 300         base_rect.x = 0;
 301         base_rect.y = 0;
 302
 303         Glib::RefPtr<Gdk::Pixmap> pixmap;
 304         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 305
 306         if (i == metric_pixmaps.end() || style_changed) {
 307                 pixmap = render_metrics (meter_metric_area);
 308         } else {
 309                 pixmap = i->second;
 310         }
 311
 312         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 313         win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 314         win->draw_drawable (fg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 315
 316         style_changed = false;
 317         return true;
 318 }
 319
 320 int
 321 GainMeter::redraw_pixmaps(string blah)
 322 {
 323         style_changed = true;
 324         return 0;
 325 }
 326
 327 GainMeter::~GainMeter ()
 328 {
 329         if (meter_menu) {
 330                 delete meter_menu;
 331         }
 332
 333         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 334                 if ((*i).meter) {
 335                         delete (*i).meter;
 336                 }
 337         }
 338 }
 339
 340 void
 341 GainMeter::update_meters ()
 342 {
 343         vector<MeterInfo>::iterator i;
 344         uint32_t n;
 345         float peak, mpeak;
 346         char buf[32];
 347
 348         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 349                 if ((*i).packed) {
 350                         peak = _io->peak_meter().peak_power (n);
 351
 352                         (*i).meter->set (log_meter (peak));
 353
 354                         mpeak = _io->peak_meter().max_peak_power(n);
 355
 356                         if (mpeak > max_peak) {
 357                                 max_peak = mpeak;
 358                                 /* set peak display */
 359                                 if (max_peak <= -200.0f) {
 360                                         peak_display.set_label (_("-inf"));
 361                                 } else {
 362                                         snprintf (buf, sizeof(buf), "%.1f", max_peak);
 363                                         peak_display.set_label (buf);
 364                                 }
 365
 366                                 if (max_peak >= 0.0f) {
 367                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 368                                 }
 369                         }
 370                 }
 371         }
 372 }
 373
 374 void
 375 GainMeter::parameter_changed(const char* parameter_name)
 376 {
 377 #define PARAM_IS(x) (!strcmp (parameter_name, (x)))
 378
 379         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::parameter_changed), parameter_name));
 380
 381         if (PARAM_IS ("meter-hold")) {
 382
 383                 vector<MeterInfo>::iterator i;
 384                 uint32_t n;
 385
 386                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 387
 388                         (*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
 389                 }
 390         }
 391
 392 #undef PARAM_IS
 393 }
 394
 395 void
 396 GainMeter::hide_all_meters ()
 397 {
 398         bool remove_metric_area = false;
 399
 400         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 401                 if ((*i).packed) {
 402                         remove_metric_area = true;
 403                         meter_packer.remove (*((*i).meter));
 404                         (*i).packed = false;
 405                 }
 406         }
 407
 408         if (remove_metric_area) {
 409                 if (meter_metric_area.get_parent()) {
 410                         meter_packer.remove (meter_metric_area);
 411                 }
 412         }
 413 }
 414
 415 void
 416 GainMeter::setup_meters ()
 417 {
 418         uint32_t nmeters = _io->n_outputs().n_total();
 419         guint16 width;
 420
 421         hide_all_meters ();
 422
 423         Route* r;
 424
 425         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 426
 427                 switch (r->meter_point()) {
 428                 case MeterPreFader:
 429                 case MeterInput:
 430                         nmeters = r->n_inputs().n_total();
 431                         break;
 432                 case MeterPostFader:
 433                         nmeters = r->n_outputs().n_total();
 434                         break;
 435                 }
 436
 437         } else {
 438
 439                 nmeters = _io->n_outputs().n_total();
 440
 441         }
 442
 443         if (nmeters == 0) {
 444                 return;
 445         }
 446
 447         if (nmeters <= 2) {
 448                 width = regular_meter_width;
 449         } else {
 450                 width = thin_meter_width;
 451         }
 452
 453         while (meters.size() < nmeters) {
 454                 meters.push_back (MeterInfo());
 455         }
 456
 457         /* pack them backwards */
 458
 459         if (_width == Wide) {
 460                 meter_packer.pack_end (meter_metric_area, false, false);
 461                 meter_metric_area.show_all ();
 462         }
 463
 464         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 465                 if (meters[n].width != width) {
 466                         delete meters[n].meter;
 467                         meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical);
 468                         meters[n].width = width;
 469
 470                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 471                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 472                 }
 473
 474                 meter_packer.pack_end (*meters[n].meter, false, false);
 475                 meters[n].meter->show_all ();
 476                 meters[n].packed = true;
 477         }
 478 }
 479
 480 int
 481 GainMeter::get_gm_width ()
 482 {
 483         Gtk::Requisition sz = hbox.size_request ();
 484         return sz.width;
 485 }
 486
 487 bool
 488 GainMeter::gain_key_press (GdkEventKey* ev)
 489 {
 490         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 491                 /* drop through to normal handling */
 492                 return false;
 493         }
 494         /* illegal key for gain entry */
 495         return true;
 496 }
 497
 498 bool
 499 GainMeter::peak_button_release (GdkEventButton* ev)
 500 {
 501         /* reset peak label */
 502
 503         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
 504                 ResetAllPeakDisplays ();
 505         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 506                 Route* r;
 507                 if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 508                         ResetGroupPeakDisplays (r->mix_group());
 509                 }
 510         } else {
 511                 reset_peak_display ();
 512         }
 513
 514         return true;
 515 }
 516
 517 void
 518 GainMeter::reset_peak_display ()
 519 {
 520         Route * r;
 521         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 522                 r->peak_meter().reset_max();
 523         }
 524
 525         max_peak = -INFINITY;
 526         peak_display.set_label (_("-Inf"));
 527         peak_display.set_name ("MixerStripPeakDisplay");
 528 }
 529
 530 void
 531 GainMeter::reset_group_peak_display (RouteGroup* group)
 532 {
 533         Route* r;
 534         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 535                 if (group == r->mix_group()) {
 536                         reset_peak_display ();
 537                 }
 538         }
 539 }
 540
 541 gint
 542 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 543 {
 544         switch (ev->button) {
 545         case 1:
 546                 meters[which].meter->clear();
 547                 max_peak = minus_infinity();
 548                 peak_display.set_label (_("-inf"));
 549                 peak_display.set_name ("MixerStripPeakDisplay");
 550                 break;
 551
 552         case 3:
 553                 // popup_meter_menu (ev);
 554                 break;
 555         };
 556
 557         return TRUE;
 558 }
 559
 560 void
 561 GainMeter::popup_meter_menu (GdkEventButton *ev)
 562 {
 563         using namespace Menu_Helpers;
 564
 565         if (meter_menu == 0) {
 566                 meter_menu = new Gtk::Menu;
 567                 MenuList& items = meter_menu->items();
 568
 569                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 570                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 571                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 572                 items.push_back (SeparatorElem());
 573                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 574                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 575                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 576         }
 577
 578         meter_menu->popup (1, ev->time);
 579 }
 580
 581 bool
 582 GainMeter::gain_focused (GdkEventFocus* ev)
 583 {
 584         if (ev->in) {
 585                 gain_display.select_region (0, -1);
 586         } else {
 587                 gain_display.select_region (0, 0);
 588         }
 589         return false;
 590 }
 591
 592 void
 593 GainMeter::gain_activated ()
 594 {
 595         float f;
 596
 597         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 598
 599                 /* clamp to displayable values */
 600
 601                 f = min (f, 6.0f);
 602
 603                 _io->set_gain (dB_to_coefficient(f), this);
 604
 605                 if (gain_display.has_focus()) {
 606                         PublicEditor::instance().reset_focus();
 607                 }
 608         }
 609 }
 610
 611 void
 612 GainMeter::show_gain ()
 613 {
 614         char buf[32];
 615
 616         float v = gain_adjustment.get_value();
 617
 618         if (v == 0.0) {
 619                 strcpy (buf, _("-inf"));
 620         } else {
 621                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 622         }
 623
 624         gain_display.set_text (buf);
 625 }
 626
 627 void
 628 GainMeter::gain_adjusted ()
 629 {
 630         if (!ignore_toggle) {
 631                 _io->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 632         }
 633         show_gain ();
 634 }
 635
 636 void
 637 GainMeter::effective_gain_display ()
 638 {
 639         gfloat value = gain_to_slider_position (_io->effective_gain());
 640
 641         if (gain_adjustment.get_value() != value) {
 642                 ignore_toggle = true;
 643                 gain_adjustment.set_value (value);
 644                 ignore_toggle = false;
 645         }
 646 }
 647
 648 void
 649 GainMeter::gain_changed (void *src)
 650 {
 651         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 652 }
 653
 654 void
 655 GainMeter::set_meter_strip_name (const char * name)
 656 {
 657         meter_metric_area.set_name (name);
 658 }
 659
 660 void
 661 GainMeter::set_fader_name (const char * name)
 662 {
 663         gain_slider->set_name (name);
 664 }
 665
 666 void
 667 GainMeter::update_gain_sensitive ()
 668 {
 669         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io->gain_automation_state() & Play));
 670 }
 671
 672
 673 static MeterPoint
 674 next_meter_point (MeterPoint mp)
 675 {
 676         switch (mp) {
 677         case MeterInput:
 678                 return MeterPreFader;
 679                 break;
 680
 681         case MeterPreFader:
 682                 return MeterPostFader;
 683                 break;
 684
 685         case MeterPostFader:
 686                 return MeterInput;
 687                 break;
 688         }
 689         /*NOTREACHED*/
 690         return MeterInput;
 691 }
 692
 693 gint
 694 GainMeter::meter_press(GdkEventButton* ev)
 695 {
 696         Route* _route;
 697
 698         wait_for_release = false;
 699
 700         if ((_route = dynamic_cast<Route*>(_io.get())) == 0) {
 701                 return FALSE;
 702         }
 703
 704         if (!ignore_toggle) {
 705
 706                 if (Keyboard::is_context_menu_event (ev)) {
 707
 708                         // no menu at this time.
 709
 710                 } else {
 711
 712                         if (ev->button == 2) {
 713
 714                                 // ctrl-button2 click is the midi binding click
 715                                 // button2-click is "momentary"
 716
 717                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
 718                                         wait_for_release = true;
 719                                         old_meter_point = _route->meter_point ();
 720                                 }
 721                         }
 722
 723                         if (ev->button == 1 || ev->button == 2) {
 724
 725                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
 726
 727                                         /* ctrl-shift-click applies change to all routes */
 728
 729                                         _session.begin_reversible_command (_("meter point change"));
 730                                         Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 731                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 732                                         cmd->mark();
 733                                         _session.add_command (cmd);
 734                                         _session.commit_reversible_command ();
 735
 736
 737                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 738
 739                                         /* ctrl-click: solo mix group.
 740                                            ctrl-button2 is MIDI learn.
 741                                         */
 742
 743                                         if (ev->button == 1) {
 744                                                 _session.begin_reversible_command (_("meter point change"));
 745                                                 Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 746                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 747                                                 cmd->mark();
 748                                                 _session.add_command (cmd);
 749                                                 _session.commit_reversible_command ();
 750                                         }
 751
 752                                 } else {
 753
 754                                         /* click: change just this route */
 755
 756                                         // XXX no undo yet
 757
 758                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 759                                 }
 760                         }
 761                 }
 762         }
 763
 764         return true;
 765
 766 }
 767
 768 gint
 769 GainMeter::meter_release(GdkEventButton* ev)
 770 {
 771
 772         if(!ignore_toggle){
 773                 if (wait_for_release){
 774                         wait_for_release = false;
 775                         set_meter_point (*(dynamic_cast<Route*>(_io.get())), old_meter_point);
 776                 }
 777         }
 778         return true;
 779 }
 780
 781 void
 782 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 783 {
 784         route.set_meter_point (mp, this);
 785 }
 786
 787 void
 788 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 789 {
 790         RouteGroup* mix_group;
 791
 792         if((mix_group = route.mix_group()) != 0){
 793                 mix_group->apply (&Route::set_meter_point, mp, this);
 794         } else {
 795                 route.set_meter_point (mp, this);
 796         }
 797 }
 798
 799 void
 800 GainMeter::meter_point_clicked ()
 801 {
 802         Route* r;
 803
 804         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 805
 806         }
 807 }
 808
 809 gint
 810 GainMeter::start_gain_touch (GdkEventButton* ev)
 811 {
 812         _io->start_gain_touch ();
 813         return FALSE;
 814 }
 815
 816 gint
 817 GainMeter::end_gain_touch (GdkEventButton* ev)
 818 {
 819         _io->end_gain_touch ();
 820         return FALSE;
 821 }
 822
 823 gint
 824 GainMeter::gain_automation_state_button_event (GdkEventButton *ev)
 825 {
 826         if (ev->type == GDK_BUTTON_RELEASE) {
 827                 return TRUE;
 828         }
 829
 830         switch (ev->button) {
 831                 case 1:
 832                         gain_astate_menu.popup (1, ev->time);
 833                         break;
 834                 default:
 835                         break;
 836         }
 837
 838         return TRUE;
 839 }
 840
 841 gint
 842 GainMeter::gain_automation_style_button_event (GdkEventButton *ev)
 843 {
 844         if (ev->type == GDK_BUTTON_RELEASE) {
 845                 return TRUE;
 846         }
 847
 848         switch (ev->button) {
 849         case 1:
 850                 gain_astyle_menu.popup (1, ev->time);
 851                 break;
 852         default:
 853                 break;
 854         }
 855         return TRUE;
 856 }
 857
 858 string
 859 GainMeter::astate_string (AutoState state)
 860 {
 861         return _astate_string (state, false);
 862 }
 863
 864 string
 865 GainMeter::short_astate_string (AutoState state)
 866 {
 867         return _astate_string (state, true);
 868 }
 869
 870 string
 871 GainMeter::_astate_string (AutoState state, bool shrt)
 872 {
 873         string sstr;
 874
 875         switch (state) {
 876         case Off:
 877                 sstr = (shrt ? "M" : _("M"));
 878                 break;
 879         case Play:
 880                 sstr = (shrt ? "P" : _("P"));
 881                 break;
 882         case Touch:
 883                 sstr = (shrt ? "T" : _("T"));
 884                 break;
 885         case Write:
 886                 sstr = (shrt ? "W" : _("W"));
 887                 break;
 888         }
 889
 890         return sstr;
 891 }
 892
 893 string
 894 GainMeter::astyle_string (AutoStyle style)
 895 {
 896         return _astyle_string (style, false);
 897 }
 898
 899 string
 900 GainMeter::short_astyle_string (AutoStyle style)
 901 {
 902         return _astyle_string (style, true);
 903 }
 904
 905 string
 906 GainMeter::_astyle_string (AutoStyle style, bool shrt)
 907 {
 908         if (style & Trim) {
 909                 return _("Trim");
 910         } else {
 911                 /* XXX it might different in different languages */
 912
 913                 return (shrt ? _("Abs") : _("Abs"));
 914         }
 915 }
 916
 917 void
 918 GainMeter::gain_automation_style_changed ()
 919 {
 920   // Route* _route = dynamic_cast<Route*>(&_io);
 921         switch (_width) {
 922         case Wide:
 923                 gain_automation_style_button.set_label (astyle_string(_io->gain_automation_curve().automation_style()));
 924                 break;
 925         case Narrow:
 926                 gain_automation_style_button.set_label  (short_astyle_string(_io->gain_automation_curve().automation_style()));
 927                 break;
 928         }
 929 }
 930
 931 void
 932 GainMeter::gain_automation_state_changed ()
 933 {
 934         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::gain_automation_state_changed));
 935         //Route* _route = dynamic_cast<Route*>(&_io);
 936
 937         bool x;
 938
 939         switch (_width) {
 940         case Wide:
 941                 gain_automation_state_button.set_label (astate_string(_io->gain_automation_curve().automation_state()));
 942                 break;
 943         case Narrow:
 944                 gain_automation_state_button.set_label (short_astate_string(_io->gain_automation_curve().automation_state()));
 945                 break;
 946         }
 947
 948         x = (_io->gain_automation_state() != Off);
 949
 950         if (gain_automation_state_button.get_active() != x) {
 951                 ignore_toggle = true;
 952                 gain_automation_state_button.set_active (x);
 953                 ignore_toggle = false;
 954         }
 955
 956         update_gain_sensitive ();
 957
 958         /* start watching automation so that things move */
 959
 960         gain_watching.disconnect();
 961
 962         if (x) {
 963                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeter::effective_gain_display));
 964         }
 965 }