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 <gtkmm2ext/gtk_ui.h>
  36 #include <midi++/manager.h>
  37 #include <pbd/fastlog.h>
  38
  39 #include "ardour_ui.h"
  40 #include "gain_meter.h"
  41 #include "utils.h"
  42 #include "logmeter.h"
  43 #include "gui_thread.h"
  44 #include "keyboard.h"
  45 #include "public_editor.h"
  46
  47 #include <ardour/session.h>
  48 #include <ardour/route.h>
  49 #include <ardour/meter.h>
  50
  51 #include "i18n.h"
  52
  53 using namespace ARDOUR;
  54 using namespace PBD;
  55 using namespace Gtkmm2ext;
  56 using namespace Gtk;
  57 using namespace sigc;
  58 using namespace std;
  59
  60 sigc::signal<void> GainMeter::ResetAllPeakDisplays;
  61 sigc::signal<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
  62 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
  63 Glib::RefPtr<Gdk::Pixbuf> GainMeter::rail;
  64 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  65
  66 int
  67 GainMeter::setup_slider_pix ()
  68 {
  69         slider = ::get_icon ("fader_belt");
  70         return 0;
  71 }
  72
  73 GainMeter::GainMeter (boost::shared_ptr<IO> io, Session& s)
  74         : _io (io),
  75           _session (s),
  76           gain_slider (0),
  77           // 0.781787 is the value needed for gain to be set to 0.
  78           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  79           gain_automation_style_button (""),
  80           gain_automation_state_button ("")
  81
  82 {
  83         if (slider == 0) {
  84                 setup_slider_pix ();
  85         }
  86
  87         ignore_toggle = false;
  88         meter_menu = 0;
  89         next_release_selects = false;
  90         style_changed = true;
  91
  92         gain_slider = manage (new VSliderController (slider,
  93                                                      &gain_adjustment,
  94                                                      *_io->gain_control().get(),
  95                                                      false));
  96
  97         level_meter = new LevelMeter(_io, _session);
  98
  99         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
 100         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
 101         gain_slider->set_name ("GainFader");
 102
 103         gain_display.set_name ("MixerStripGainDisplay");
 104         gain_display.set_has_frame (false);
 105         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 106         gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
 107         gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 108         gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 109
 110         gain_display_box.set_name ("MeterMetricsStrip");
 111         gain_display_box.set_homogeneous (true);
 112         gain_display_box.set_spacing (2);
 113         gain_display_box.pack_start (gain_display, true, true);
 114
 115         peak_display.set_name ("MixerStripPeakDisplay");
 116 //      peak_display.set_has_frame (false);
 117 //      peak_display.set_editable (false);
 118         set_size_request_to_display_given_text  (peak_display, "-80.g", 2, 6); /* note the descender */
 119         max_peak = minus_infinity();
 120         peak_display.set_label (_("-inf"));
 121         peak_display.unset_flags (Gtk::CAN_FOCUS);
 122
 123         meter_metric_area.set_name ("MeterMetricsStrip");
 124         set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
 125
 126         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 127         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 128
 129         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
 130         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
 131
 132         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 133         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 134
 135         gain_automation_state_button.set_size_request(15, 15);
 136         gain_automation_style_button.set_size_request(15, 15);
 137
 138         HBox* fader_centering_box = manage (new HBox);
 139         fader_centering_box->pack_start (*gain_slider, true, false);
 140
 141         fader_vbox = manage (new Gtk::VBox());
 142         fader_vbox->set_spacing (0);
 143         fader_vbox->pack_start (*fader_centering_box, false, false, 0);
 144
 145         hbox.set_spacing (2);
 146
 147         if (_io->default_type() == ARDOUR::DataType::AUDIO) {
 148                 hbox.pack_start (*fader_vbox, true, true);
 149         }
 150
 151         set_width (Narrow);
 152
 153         Route* r;
 154
 155         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 156
 157                 /*
 158                    if we have a non-hidden route (ie. we're not the click or the auditioner),
 159                    pack some route-dependent stuff.
 160                 */
 161
 162                 gain_display_box.pack_end (peak_display, true, true);
 163                 hbox.pack_end (*level_meter, 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_parameter_automation_state),
 169                                                                   Parameter(GainAutomation), (AutoState) Off)));
 170                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 171                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 172                                                                   Parameter(GainAutomation), (AutoState) Play)));
 173                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 174                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 175                                                                   Parameter(GainAutomation), (AutoState) Write)));
 176                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 177                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 178                                                                   Parameter(GainAutomation), (AutoState) Touch)));
 179
 180                 gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 181                 gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 182
 183                 gain_astate_menu.set_name ("ArdourContextMenu");
 184                 gain_astyle_menu.set_name ("ArdourContextMenu");
 185
 186                 gain_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_style_button_event), false);
 187                 gain_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_state_button_event), false);
 188
 189                 r->gain_control()->list()->automation_state_changed.connect (mem_fun(*this, &GainMeter::gain_automation_state_changed));
 190                 r->gain_control()->list()->automation_style_changed.connect (mem_fun(*this, &GainMeter::gain_automation_style_changed));
 191                 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 192
 193                 gain_automation_state_changed ();
 194         }
 195
 196         set_spacing (2);
 197
 198         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 199         pack_start (hbox, Gtk::PACK_SHRINK);
 200
 201         _io->gain_control()->Changed.connect (mem_fun(*this, &GainMeter::gain_changed));
 202
 203         meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 204         gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeter::gain_adjusted));
 205         peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeter::peak_button_release), false);
 206         gain_display.signal_key_press_event().connect (mem_fun(*this, &GainMeter::gain_key_press), false);
 207
 208         gain_changed ();
 209         show_gain ();
 210
 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         UI::instance()->theme_changed.connect (mem_fun(*this, &GainMeter::on_theme_changed));
 217
 218         ColorsChanged.connect (bind (mem_fun (*this, &GainMeter::color_handler), false));
 219         DPIReset.connect (bind (mem_fun (*this, &GainMeter::color_handler), true));
 220
 221         //hide_all();
 222 }
 223
 224 void
 225 GainMeter::set_width (Width w, int len)
 226 {
 227         _width = w;
 228         level_meter->setup_meters (len);
 229 }
 230
 231 Glib::RefPtr<Gdk::Pixmap>
 232 GainMeter::render_metrics (Gtk::Widget& w)
 233 {
 234         //cerr << "GainMeter::render_metrics() called, red = " << w.get_style()->get_bg(Gtk::STATE_NORMAL).get_red() << endl;//DEBUG
 235         Glib::RefPtr<Gdk::Window> win (w.get_window());
 236         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 237         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 238         gint width, height;
 239         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 240         char buf[32];
 241
 242         win->get_size (width, height);
 243
 244         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 245
 246         metric_pixmaps[w.get_name()] = pixmap;
 247
 248         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 249
 250         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 251
 252         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 253
 254                 float fraction = log_meter (db_points[i]);
 255                 gint pos = height - (gint) floor (height * fraction);
 256
 257                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 258
 259                 layout->set_text (buf);
 260
 261                 /* we want logical extents, not ink extents here */
 262
 263                 int width, height;
 264                 layout->get_pixel_size (width, height);
 265
 266                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 267                 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
 268         }
 269
 270         return pixmap;
 271 }
 272
 273 gint
 274 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 275 {
 276         /* Only draw dB scale if we're metering audio */
 277         if (_io->n_inputs().n_audio() + _io->n_outputs().n_audio() == 0)
 278                 return true;
 279
 280         static Glib::RefPtr<Gtk::Style> meter_style;
 281
 282         if (style_changed) {
 283                 meter_style = meter_metric_area.get_style();
 284         }
 285
 286         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 287         Glib::RefPtr<Gdk::GC> fg_gc (meter_style->get_fg_gc (Gtk::STATE_NORMAL));
 288         Glib::RefPtr<Gdk::GC> bg_gc (meter_style->get_bg_gc (Gtk::STATE_NORMAL));
 289
 290         GdkRectangle base_rect;
 291         GdkRectangle draw_rect;
 292         gint width, height;
 293
 294         win->get_size (width, height);
 295
 296         base_rect.width = width;
 297         base_rect.height = height;
 298         base_rect.x = 0;
 299         base_rect.y = 0;
 300
 301         Glib::RefPtr<Gdk::Pixmap> pixmap;
 302         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 303
 304         if (i == metric_pixmaps.end() || style_changed || dpi_changed) {
 305                 pixmap = render_metrics (meter_metric_area);
 306         } else {
 307                 pixmap = i->second;
 308         }
 309
 310         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 311         win->draw_rectangle (bg_gc, false, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 312         win->draw_drawable (fg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 313
 314         style_changed = false;
 315         return true;
 316 }
 317
 318 void
 319 GainMeter::on_theme_changed()
 320 {
 321         style_changed = true;
 322 }
 323
 324 GainMeter::~GainMeter ()
 325 {
 326         if (meter_menu) {
 327                 delete meter_menu;
 328         }
 329
 330         if (level_meter) {
 331                 delete level_meter;
 332         }
 333 }
 334
 335 void
 336 GainMeter::hide_all_meters ()
 337 {
 338         bool remove_metric_area = false;
 339
 340         level_meter->hide_meters();
 341
 342         if (remove_metric_area) {
 343                 if (meter_metric_area.get_parent()) {
 344                         level_meter->remove (meter_metric_area);
 345                 }
 346         }
 347 }
 348
 349 void
 350 GainMeter::setup_meters (int len)
 351 {
 352         if (!meter_metric_area.get_parent()) {
 353                 level_meter->pack_end (meter_metric_area, false, false);
 354                 meter_metric_area.show_all ();
 355         }
 356         level_meter->setup_meters(len, 5);
 357 }
 358
 359 int
 360 GainMeter::get_gm_width ()
 361 {
 362         Gtk::Requisition sz = hbox.size_request ();
 363         return sz.width;
 364 }
 365
 366 bool
 367 GainMeter::gain_key_press (GdkEventKey* ev)
 368 {
 369         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 370                 /* drop through to normal handling */
 371                 return false;
 372         }
 373         /* illegal key for gain entry */
 374         return true;
 375 }
 376
 377 bool
 378 GainMeter::peak_button_release (GdkEventButton* ev)
 379 {
 380         /* reset peak label */
 381
 382         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 383                 ResetAllPeakDisplays ();
 384         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 385                 Route* r;
 386                 if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 387                         ResetGroupPeakDisplays (r->mix_group());
 388                 }
 389         } else {
 390                 reset_peak_display ();
 391         }
 392
 393         return true;
 394 }
 395
 396 void
 397 GainMeter::reset_peak_display ()
 398 {
 399         Route * r;
 400         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 401                 r->peak_meter().reset_max();
 402         }
 403
 404         level_meter->clear_meters();
 405         max_peak = -INFINITY;
 406         peak_display.set_label (_("-Inf"));
 407         peak_display.set_name ("MixerStripPeakDisplay");
 408 }
 409
 410 void
 411 GainMeter::reset_group_peak_display (RouteGroup* group)
 412 {
 413         Route* r;
 414         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 415                 if (group == r->mix_group()) {
 416                         reset_peak_display ();
 417                 }
 418         }
 419 }
 420
 421 void
 422 GainMeter::popup_meter_menu (GdkEventButton *ev)
 423 {
 424         using namespace Menu_Helpers;
 425
 426         if (meter_menu == 0) {
 427                 meter_menu = new Gtk::Menu;
 428                 MenuList& items = meter_menu->items();
 429
 430                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 431                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 432                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 433                 items.push_back (SeparatorElem());
 434                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 435                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 436                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 437         }
 438
 439         meter_menu->popup (1, ev->time);
 440 }
 441
 442 bool
 443 GainMeter::gain_focused (GdkEventFocus* ev)
 444 {
 445         if (ev->in) {
 446                 gain_display.select_region (0, -1);
 447         } else {
 448                 gain_display.select_region (0, 0);
 449         }
 450         return false;
 451 }
 452
 453 void
 454 GainMeter::gain_activated ()
 455 {
 456         float f;
 457
 458         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 459
 460                 /* clamp to displayable values */
 461
 462                 f = min (f, 6.0f);
 463
 464                 _io->gain_control()->set_value (dB_to_coefficient(f));
 465
 466                 if (gain_display.has_focus()) {
 467                         PublicEditor::instance().reset_focus();
 468                 }
 469         }
 470 }
 471
 472 void
 473 GainMeter::show_gain ()
 474 {
 475         char buf[32];
 476
 477         float v = gain_adjustment.get_value();
 478
 479         if (v == 0.0) {
 480                 strcpy (buf, _("-inf"));
 481         } else {
 482                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 483         }
 484
 485         gain_display.set_text (buf);
 486 }
 487
 488 void
 489 GainMeter::gain_adjusted ()
 490 {
 491         if (!ignore_toggle) {
 492                 _io->gain_control()->set_value (slider_position_to_gain (gain_adjustment.get_value()));
 493         }
 494         show_gain ();
 495 }
 496
 497 void
 498 GainMeter::effective_gain_display ()
 499 {
 500         gfloat value = gain_to_slider_position (_io->effective_gain());
 501
 502         if (gain_adjustment.get_value() != value) {
 503                 ignore_toggle = true;
 504                 gain_adjustment.set_value (value);
 505                 ignore_toggle = false;
 506         }
 507 }
 508
 509 void
 510 GainMeter::gain_changed ()
 511 {
 512         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 513 }
 514
 515 void
 516 GainMeter::set_meter_strip_name (const char * name)
 517 {
 518         meter_metric_area.set_name (name);
 519 }
 520
 521 void
 522 GainMeter::set_fader_name (const char * name)
 523 {
 524         gain_slider->set_name (name);
 525 }
 526
 527 void
 528 GainMeter::update_gain_sensitive ()
 529 {
 530         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io->gain_control()->list()->automation_state() & Play));
 531 }
 532
 533
 534 static MeterPoint
 535 next_meter_point (MeterPoint mp)
 536 {
 537         switch (mp) {
 538         case MeterInput:
 539                 return MeterPreFader;
 540                 break;
 541
 542         case MeterPreFader:
 543                 return MeterPostFader;
 544                 break;
 545
 546         case MeterPostFader:
 547                 return MeterInput;
 548                 break;
 549         }
 550         /*NOTREACHED*/
 551         return MeterInput;
 552 }
 553
 554 gint
 555 GainMeter::meter_press(GdkEventButton* ev)
 556 {
 557         Route* _route;
 558
 559         wait_for_release = false;
 560
 561         if ((_route = dynamic_cast<Route*>(_io.get())) == 0) {
 562                 return FALSE;
 563         }
 564
 565         if (!ignore_toggle) {
 566
 567                 if (Keyboard::is_context_menu_event (ev)) {
 568
 569                         // no menu at this time.
 570
 571                 } else {
 572
 573                         if (ev->button == 2) {
 574
 575                                 // Primary-button2 click is the midi binding click
 576                                 // button2-click is "momentary"
 577
 578                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 579                                         wait_for_release = true;
 580                                         old_meter_point = _route->meter_point ();
 581                                 }
 582                         }
 583
 584                         if (ev->button == 1 || ev->button == 2) {
 585
 586                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 587
 588                                         /* Primary+Tertiary-click applies change to all routes */
 589
 590                                         _session.begin_reversible_command (_("meter point change"));
 591                                         Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 592                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 593                                         cmd->mark();
 594                                         _session.add_command (cmd);
 595                                         _session.commit_reversible_command ();
 596
 597
 598                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 599
 600                                         /* Primary-click: solo mix group.
 601                                            NOTE: Primary-button2 is MIDI learn.
 602                                         */
 603
 604                                         if (ev->button == 1) {
 605                                                 _session.begin_reversible_command (_("meter point change"));
 606                                                 Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 607                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 608                                                 cmd->mark();
 609                                                 _session.add_command (cmd);
 610                                                 _session.commit_reversible_command ();
 611                                         }
 612
 613                                 } else {
 614
 615                                         /* click: change just this route */
 616
 617                                         // XXX no undo yet
 618
 619                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 620                                 }
 621                         }
 622                 }
 623         }
 624
 625         return true;
 626
 627 }
 628
 629 gint
 630 GainMeter::meter_release(GdkEventButton* ev)
 631 {
 632
 633         if(!ignore_toggle){
 634                 if (wait_for_release){
 635                         wait_for_release = false;
 636                         set_meter_point (*(dynamic_cast<Route*>(_io.get())), old_meter_point);
 637                 }
 638         }
 639         return true;
 640 }
 641
 642 void
 643 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 644 {
 645         route.set_meter_point (mp, this);
 646 }
 647
 648 void
 649 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 650 {
 651         RouteGroup* mix_group;
 652
 653         if((mix_group = route.mix_group()) != 0){
 654                 mix_group->apply (&Route::set_meter_point, mp, this);
 655         } else {
 656                 route.set_meter_point (mp, this);
 657         }
 658 }
 659
 660 void
 661 GainMeter::meter_point_clicked ()
 662 {
 663         Route* r;
 664
 665         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 666
 667         }
 668 }
 669
 670 gint
 671 GainMeter::start_gain_touch (GdkEventButton* ev)
 672 {
 673         _io->gain_control()->list()->start_touch ();
 674         return FALSE;
 675 }
 676
 677 gint
 678 GainMeter::end_gain_touch (GdkEventButton* ev)
 679 {
 680         _io->gain_control()->list()->stop_touch ();
 681         return FALSE;
 682 }
 683
 684 gint
 685 GainMeter::gain_automation_state_button_event (GdkEventButton *ev)
 686 {
 687         if (ev->type == GDK_BUTTON_RELEASE) {
 688                 return TRUE;
 689         }
 690
 691         switch (ev->button) {
 692                 case 1:
 693                         gain_astate_menu.popup (1, ev->time);
 694                         break;
 695                 default:
 696                         break;
 697         }
 698
 699         return TRUE;
 700 }
 701
 702 gint
 703 GainMeter::gain_automation_style_button_event (GdkEventButton *ev)
 704 {
 705         if (ev->type == GDK_BUTTON_RELEASE) {
 706                 return TRUE;
 707         }
 708
 709         switch (ev->button) {
 710         case 1:
 711                 gain_astyle_menu.popup (1, ev->time);
 712                 break;
 713         default:
 714                 break;
 715         }
 716         return TRUE;
 717 }
 718
 719 string
 720 GainMeter::astate_string (AutoState state)
 721 {
 722         return _astate_string (state, false);
 723 }
 724
 725 string
 726 GainMeter::short_astate_string (AutoState state)
 727 {
 728         return _astate_string (state, true);
 729 }
 730
 731 string
 732 GainMeter::_astate_string (AutoState state, bool shrt)
 733 {
 734         string sstr;
 735
 736         switch (state) {
 737         case Off:
 738                 sstr = (shrt ? "M" : _("M"));
 739                 break;
 740         case Play:
 741                 sstr = (shrt ? "P" : _("P"));
 742                 break;
 743         case Touch:
 744                 sstr = (shrt ? "T" : _("T"));
 745                 break;
 746         case Write:
 747                 sstr = (shrt ? "W" : _("W"));
 748                 break;
 749         }
 750
 751         return sstr;
 752 }
 753
 754 string
 755 GainMeter::astyle_string (AutoStyle style)
 756 {
 757         return _astyle_string (style, false);
 758 }
 759
 760 string
 761 GainMeter::short_astyle_string (AutoStyle style)
 762 {
 763         return _astyle_string (style, true);
 764 }
 765
 766 string
 767 GainMeter::_astyle_string (AutoStyle style, bool shrt)
 768 {
 769         if (style & Trim) {
 770                 return _("Trim");
 771         } else {
 772                 /* XXX it might different in different languages */
 773
 774                 return (shrt ? _("Abs") : _("Abs"));
 775         }
 776 }
 777
 778 void
 779 GainMeter::gain_automation_style_changed ()
 780 {
 781   // Route* _route = dynamic_cast<Route*>(&_io);
 782         switch (_width) {
 783         case Wide:
 784                 gain_automation_style_button.set_label (astyle_string(_io->gain_control()->list()->automation_style()));
 785                 break;
 786         case Narrow:
 787                 gain_automation_style_button.set_label  (short_astyle_string(_io->gain_control()->list()->automation_style()));
 788                 break;
 789         }
 790 }
 791
 792 void
 793 GainMeter::gain_automation_state_changed ()
 794 {
 795         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::gain_automation_state_changed));
 796         //Route* _route = dynamic_cast<Route*>(&_io);
 797
 798         bool x;
 799
 800         switch (_width) {
 801         case Wide:
 802                 gain_automation_state_button.set_label (astate_string(_io->gain_control()->list()->automation_state()));
 803                 break;
 804         case Narrow:
 805                 gain_automation_state_button.set_label (short_astate_string(_io->gain_control()->list()->automation_state()));
 806                 break;
 807         }
 808
 809         x = (_io->gain_control()->list()->automation_state() != Off);
 810
 811         if (gain_automation_state_button.get_active() != x) {
 812                 ignore_toggle = true;
 813                 gain_automation_state_button.set_active (x);
 814                 ignore_toggle = false;
 815         }
 816
 817         update_gain_sensitive ();
 818
 819         /* start watching automation so that things move */
 820
 821         gain_watching.disconnect();
 822
 823         if (x) {
 824                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeter::effective_gain_display));
 825         }
 826 }
 827
 828 void
 829 GainMeter::update_meters()
 830 {
 831         char buf[32];
 832         float mpeak = level_meter->update_meters();
 833
 834         if (mpeak > max_peak) {
 835                 max_peak = mpeak;
 836                 if (mpeak <= -200.0f) {
 837                         peak_display.set_label (_("-inf"));
 838                 } else {
 839                         snprintf (buf, sizeof(buf), "%.1f", mpeak);
 840                         peak_display.set_label (buf);
 841                 }
 842
 843                 if (mpeak >= 0.0f) {
 844                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 845                 }
 846         }
 847 }
 848
 849 void GainMeter::color_handler (bool dpi)
 850 {
 851         color_changed = true;
 852         dpi_changed = (dpi) ? true : false;
 853         setup_meters();
 854 }