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 <gtkmm2ext/utils.h>
  30 #include <gtkmm2ext/fastmeter.h>
  31 #include <gtkmm2ext/stop_signal.h>
  32 #include <gtkmm2ext/barcontroller.h>
  33 #include <midi++/manager.h>
  34 #include <pbd/fastlog.h>
  35
  36 #include "ardour_ui.h"
  37 #include "gain_meter.h"
  38 #include "utils.h"
  39 #include "logmeter.h"
  40 #include "gui_thread.h"
  41 #include "keyboard.h"
  42 #include "public_editor.h"
  43
  44 #include <ardour/session.h>
  45 #include <ardour/route.h>
  46
  47 #include "i18n.h"
  48
  49 using namespace ARDOUR;
  50 using namespace PBD;
  51 using namespace Gtkmm2ext;
  52 using namespace Gtk;
  53 using namespace sigc;
  54 using namespace std;
  55
  56 sigc::signal<void> GainMeter::ResetAllPeakDisplays;
  57 sigc::signal<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
  58 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
  59 Glib::RefPtr<Gdk::Pixbuf> GainMeter::rail;
  60 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  61
  62 int
  63 GainMeter::setup_slider_pix ()
  64 {
  65         slider = ::get_icon ("fader_belt");
  66         return 0;
  67 }
  68
  69 GainMeter::GainMeter (boost::shared_ptr<IO> io, Session& s)
  70         : _io (io),
  71           _session (s),
  72           gain_slider (0),
  73           // 0.781787 is the value needed for gain to be set to 0.
  74           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  75           gain_automation_style_button (""),
  76           gain_automation_state_button ("")
  77
  78 {
  79         if (slider == 0) {
  80                 setup_slider_pix ();
  81         }
  82
  83         ignore_toggle = false;
  84         meter_menu = 0;
  85         next_release_selects = false;
  86
  87         gain_slider = manage (new VSliderController (slider,
  88                                                      &gain_adjustment,
  89                                                      _io->gain_control(),
  90                                                      false));
  91
  92         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
  93         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
  94         gain_slider->set_name ("GainFader");
  95
  96         gain_display.set_name ("MixerStripGainDisplay");
  97         gain_display.set_has_frame (false);
  98         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
  99         gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
 100         gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 101         gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 102
 103         gain_display_box.set_homogeneous (true);
 104         gain_display_box.set_spacing (2);
 105         gain_display_box.pack_start (gain_display, true, true);
 106
 107         peak_display.set_name ("MixerStripPeakDisplay");
 108         peak_display.set_has_frame (false);
 109         peak_display.set_editable (false);
 110         set_size_request_to_display_given_text  (peak_display, "-80.g", 2, 6); /* note the descender */
 111         max_peak = minus_infinity();
 112         peak_display.set_text (_("-inf"));
 113         peak_display.unset_flags (Gtk::CAN_FOCUS);
 114
 115         meter_metric_area.set_name ("MeterMetricsStrip");
 116         set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
 117
 118         meter_packer.set_spacing (2);
 119
 120         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 121         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 122
 123         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
 124         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
 125
 126         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 127         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 128
 129         gain_automation_state_button.set_size_request(15, 15);
 130         gain_automation_style_button.set_size_request(15, 15);
 131
 132         HBox* fader_centering_box = manage (new HBox);
 133         fader_centering_box->pack_start (*gain_slider, true, false);
 134
 135         fader_vbox = manage (new Gtk::VBox());
 136         fader_vbox->set_spacing (0);
 137         fader_vbox->pack_start (*fader_centering_box, false, false, 0);
 138
 139         hbox.set_spacing (2);
 140         hbox.pack_start (*fader_vbox, true, true);
 141
 142         set_width(Narrow);
 143
 144         Route* r;
 145
 146         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 147
 148                 /*
 149                    if we have a route (ie. we're not the click),
 150                    pack some route-dependent stuff.
 151                 */
 152
 153                 gain_display_box.pack_end (peak_display, true, true);
 154
 155                 hbox.pack_end (meter_packer, true, true);
 156
 157                 using namespace Menu_Helpers;
 158
 159                 gain_astate_menu.items().push_back (MenuElem (_("Off"),
 160                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Off)));
 161                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 162                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Play)));
 163                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 164                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Write)));
 165                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 166                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Touch)));
 167
 168                 gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 169                 gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 170
 171                 gain_astate_menu.set_name ("ArdourContextMenu");
 172                 gain_astyle_menu.set_name ("ArdourContextMenu");
 173
 174                 gain_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_style_button_event), false);
 175                 gain_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_state_button_event), false);
 176
 177                 r->gain_automation_curve().automation_state_changed.connect (mem_fun(*this, &GainMeter::gain_automation_state_changed));
 178                 r->gain_automation_curve().automation_style_changed.connect (mem_fun(*this, &GainMeter::gain_automation_style_changed));
 179                 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 180
 181                 gain_automation_state_changed ();
 182         }
 183
 184         set_spacing (2);
 185
 186         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 187         pack_start (hbox, Gtk::PACK_SHRINK);
 188
 189         _io->gain_changed.connect (mem_fun(*this, &GainMeter::gain_changed));
 190
 191         meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 192         gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeter::gain_adjusted));
 193         peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeter::peak_button_release), false);
 194         gain_display.signal_key_press_event().connect (mem_fun(*this, &GainMeter::gain_key_press), false);
 195
 196         Config->ParameterChanged.connect (mem_fun (*this, &GainMeter::parameter_changed));
 197
 198         gain_changed (0);
 199         show_gain ();
 200
 201         update_gain_sensitive ();
 202
 203         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 204         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 205 }
 206
 207 void
 208 GainMeter::set_width (Width w)
 209 {
 210         switch (w) {
 211         case Wide:
 212                 peak_display.show();
 213                 break;
 214         case Narrow:
 215                 peak_display.hide();
 216                 break;
 217         }
 218
 219         _width = w;
 220         setup_meters ();
 221 }
 222
 223 Glib::RefPtr<Gdk::Pixmap>
 224 GainMeter::render_metrics (Gtk::Widget& w)
 225 {
 226         Glib::RefPtr<Gdk::Window> win (w.get_window());
 227         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 228         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 229         gint width, height;
 230         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 231         char buf[32];
 232
 233         win->get_size (width, height);
 234
 235         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 236
 237         metric_pixmaps[w.get_name()] = pixmap;
 238
 239         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 240
 241         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 242
 243         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 244
 245                 float fraction = log_meter (db_points[i]);
 246                 gint pos = height - (gint) floor (height * fraction);
 247
 248                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 249
 250                 layout->set_text (buf);
 251
 252                 /* we want logical extents, not ink extents here */
 253
 254                 int width, height;
 255                 layout->get_pixel_size (width, height);
 256
 257                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 258                 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
 259         }
 260
 261         return pixmap;
 262 }
 263
 264 gint
 265 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 266 {
 267         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 268         Glib::RefPtr<Gdk::GC> fg_gc (meter_metric_area.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 269         Glib::RefPtr<Gdk::GC> bg_gc (meter_metric_area.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 270         GdkRectangle base_rect;
 271         GdkRectangle draw_rect;
 272         gint width, height;
 273
 274         win->get_size (width, height);
 275
 276         base_rect.width = width;
 277         base_rect.height = height;
 278         base_rect.x = 0;
 279         base_rect.y = 0;
 280
 281         Glib::RefPtr<Gdk::Pixmap> pixmap;
 282         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 283
 284         if (i == metric_pixmaps.end()) {
 285                 pixmap = render_metrics (meter_metric_area);
 286         } else {
 287                 pixmap = i->second;
 288         }
 289
 290         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 291         win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 292         win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 293
 294         return true;
 295 }
 296
 297 GainMeter::~GainMeter ()
 298 {
 299         if (meter_menu) {
 300                 delete meter_menu;
 301         }
 302
 303         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 304                 if ((*i).meter) {
 305                         delete (*i).meter;
 306                 }
 307         }
 308 }
 309
 310 void
 311 GainMeter::update_meters ()
 312 {
 313         vector<MeterInfo>::iterator i;
 314         uint32_t n;
 315         float peak, mpeak;
 316         char buf[32];
 317
 318         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 319                 if ((*i).packed) {
 320                         peak = _io->peak_input_power (n);
 321
 322                         (*i).meter->set (log_meter (peak), peak);
 323
 324                         mpeak = _io->max_peak_power(n);
 325
 326                         if (mpeak > max_peak) {
 327                                 max_peak = mpeak;
 328                                 /* set peak display */
 329                                 if (max_peak <= -200.0f) {
 330                                         peak_display.set_text (_("-inf"));
 331                                 } else {
 332                                         snprintf (buf, sizeof(buf), "%.1f", max_peak);
 333                                         peak_display.set_text (buf);
 334                                 }
 335
 336                                 if (max_peak >= 0.0f) {
 337                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 338                                 }
 339                         }
 340                 }
 341         }
 342 }
 343
 344 void
 345 GainMeter::parameter_changed(const char* parameter_name)
 346 {
 347 #define PARAM_IS(x) (!strcmp (parameter_name, (x)))
 348
 349         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::parameter_changed), parameter_name));
 350
 351         if (PARAM_IS ("meter-hold")) {
 352
 353                 vector<MeterInfo>::iterator i;
 354                 uint32_t n;
 355
 356                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 357
 358                         (*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
 359                 }
 360         }
 361
 362 #undef PARAM_IS
 363 }
 364
 365 void
 366 GainMeter::hide_all_meters ()
 367 {
 368         bool remove_metric_area = false;
 369
 370         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 371                 if ((*i).packed) {
 372                         remove_metric_area = true;
 373                         meter_packer.remove (*((*i).meter));
 374                         (*i).packed = false;
 375                 }
 376         }
 377
 378         if (remove_metric_area) {
 379                 if (meter_metric_area.get_parent()) {
 380                         meter_packer.remove (meter_metric_area);
 381                 }
 382         }
 383 }
 384
 385 void
 386 GainMeter::setup_meters ()
 387 {
 388         uint32_t nmeters = _io->n_outputs();
 389         guint16 width;
 390
 391         hide_all_meters ();
 392
 393         Route* r;
 394
 395         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 396
 397                 switch (r->meter_point()) {
 398                 case MeterPreFader:
 399                 case MeterInput:
 400                         nmeters = r->n_inputs();
 401                         break;
 402                 case MeterPostFader:
 403                         nmeters = r->n_outputs();
 404                         break;
 405                 }
 406
 407         } else {
 408
 409                 nmeters = _io->n_outputs();
 410
 411         }
 412
 413         if (nmeters == 0) {
 414                 return;
 415         }
 416
 417         if (nmeters <= 2) {
 418                 width = regular_meter_width;
 419         } else {
 420                 width = thin_meter_width;
 421         }
 422
 423         while (meters.size() < nmeters) {
 424                 meters.push_back (MeterInfo());
 425         }
 426
 427         /* pack them backwards */
 428
 429         if (_width == Wide) {
 430                 meter_packer.pack_end (meter_metric_area, false, false);
 431                 meter_metric_area.show_all ();
 432         }
 433
 434         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 435                 if (meters[n].width != width) {
 436                         delete meters[n].meter;
 437                         meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical);
 438                         meters[n].width = width;
 439
 440                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 441                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 442                 }
 443
 444                 meter_packer.pack_end (*meters[n].meter, false, false);
 445                 meters[n].meter->show_all ();
 446                 meters[n].packed = true;
 447         }
 448 }
 449
 450 bool
 451 GainMeter::gain_key_press (GdkEventKey* ev)
 452 {
 453         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 454                 /* drop through to normal handling */
 455                 return false;
 456         }
 457         /* illegal key for gain entry */
 458         return true;
 459 }
 460
 461 bool
 462 GainMeter::peak_button_release (GdkEventButton* ev)
 463 {
 464         /* reset peak label */
 465
 466         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
 467                 ResetAllPeakDisplays ();
 468         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 469                 Route* r;
 470                 if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 471                         ResetGroupPeakDisplays (r->mix_group());
 472                 }
 473         } else {
 474                 reset_peak_display ();
 475         }
 476
 477         return true;
 478 }
 479
 480 void
 481 GainMeter::reset_peak_display ()
 482 {
 483         Route * r;
 484         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 485                 r->reset_max_peak_meters();
 486         }
 487
 488         max_peak = -INFINITY;
 489         peak_display.set_text (_("-Inf"));
 490         peak_display.set_name ("MixerStripPeakDisplay");
 491 }
 492
 493 void
 494 GainMeter::reset_group_peak_display (RouteGroup* group)
 495 {
 496         Route* r;
 497         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 498                 if (group == r->mix_group()) {
 499                         reset_peak_display ();
 500                 }
 501         }
 502 }
 503
 504 gint
 505 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 506 {
 507         switch (ev->button) {
 508         case 1:
 509                 meters[which].meter->clear();
 510                 max_peak = minus_infinity();
 511                 peak_display.set_text (_("-inf"));
 512                 peak_display.set_name ("MixerStripPeakDisplay");
 513                 break;
 514
 515         case 3:
 516                 // popup_meter_menu (ev);
 517                 break;
 518         };
 519
 520         return TRUE;
 521 }
 522
 523 void
 524 GainMeter::popup_meter_menu (GdkEventButton *ev)
 525 {
 526         using namespace Menu_Helpers;
 527
 528         if (meter_menu == 0) {
 529                 meter_menu = new Gtk::Menu;
 530                 MenuList& items = meter_menu->items();
 531
 532                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 533                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 534                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 535                 items.push_back (SeparatorElem());
 536                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 537                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 538                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 539         }
 540
 541         meter_menu->popup (1, ev->time);
 542 }
 543
 544 bool
 545 GainMeter::gain_focused (GdkEventFocus* ev)
 546 {
 547         if (ev->in) {
 548                 gain_display.select_region (0, -1);
 549         } else {
 550                 gain_display.select_region (0, 0);
 551         }
 552         return false;
 553 }
 554
 555 void
 556 GainMeter::gain_activated ()
 557 {
 558         float f;
 559
 560         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 561
 562                 /* clamp to displayable values */
 563
 564                 f = min (f, 6.0f);
 565
 566                 _io->set_gain (dB_to_coefficient(f), this);
 567
 568                 if (gain_display.has_focus()) {
 569                         PublicEditor::instance().reset_focus();
 570                 }
 571         }
 572 }
 573
 574 void
 575 GainMeter::show_gain ()
 576 {
 577         char buf[32];
 578
 579         float v = gain_adjustment.get_value();
 580
 581         if (v == 0.0) {
 582                 strcpy (buf, _("-inf"));
 583         } else {
 584                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 585         }
 586
 587         gain_display.set_text (buf);
 588 }
 589
 590 void
 591 GainMeter::gain_adjusted ()
 592 {
 593         if (!ignore_toggle) {
 594                 _io->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 595         }
 596         show_gain ();
 597 }
 598
 599 void
 600 GainMeter::effective_gain_display ()
 601 {
 602         gfloat value = gain_to_slider_position (_io->effective_gain());
 603
 604         if (gain_adjustment.get_value() != value) {
 605                 ignore_toggle = true;
 606                 gain_adjustment.set_value (value);
 607                 ignore_toggle = false;
 608         }
 609 }
 610
 611 void
 612 GainMeter::gain_changed (void *src)
 613 {
 614         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 615 }
 616
 617 void
 618 GainMeter::set_meter_strip_name (const char * name)
 619 {
 620         meter_metric_area.set_name (name);
 621 }
 622
 623 void
 624 GainMeter::set_fader_name (const char * name)
 625 {
 626         gain_slider->set_name (name);
 627 }
 628
 629 void
 630 GainMeter::update_gain_sensitive ()
 631 {
 632         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io->gain_automation_state() & Play));
 633 }
 634
 635
 636 static MeterPoint
 637 next_meter_point (MeterPoint mp)
 638 {
 639         switch (mp) {
 640         case MeterInput:
 641                 return MeterPreFader;
 642                 break;
 643
 644         case MeterPreFader:
 645                 return MeterPostFader;
 646                 break;
 647
 648         case MeterPostFader:
 649                 return MeterInput;
 650                 break;
 651         }
 652         /*NOTREACHED*/
 653         return MeterInput;
 654 }
 655
 656 gint
 657 GainMeter::meter_press(GdkEventButton* ev)
 658 {
 659         Route* _route;
 660
 661         wait_for_release = false;
 662
 663         if ((_route = dynamic_cast<Route*>(_io.get())) == 0) {
 664                 return FALSE;
 665         }
 666
 667         if (!ignore_toggle) {
 668
 669                 if (Keyboard::is_context_menu_event (ev)) {
 670
 671                         // no menu at this time.
 672
 673                 } else {
 674
 675                         if (ev->button == 2) {
 676
 677                                 // ctrl-button2 click is the midi binding click
 678                                 // button2-click is "momentary"
 679
 680                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
 681                                         wait_for_release = true;
 682                                         old_meter_point = _route->meter_point ();
 683                                 }
 684                         }
 685
 686                         if (ev->button == 1 || ev->button == 2) {
 687
 688                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
 689
 690                                         /* ctrl-shift-click applies change to all routes */
 691
 692                                         _session.begin_reversible_command (_("meter point change"));
 693                                         Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 694                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 695                                         cmd->mark();
 696                                         _session.add_command (cmd);
 697                                         _session.commit_reversible_command ();
 698
 699
 700                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 701
 702                                         /* ctrl-click: solo mix group.
 703                                            ctrl-button2 is MIDI learn.
 704                                         */
 705
 706                                         if (ev->button == 1) {
 707                                                 _session.begin_reversible_command (_("meter point change"));
 708                                                 Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 709                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 710                                                 cmd->mark();
 711                                                 _session.add_command (cmd);
 712                                                 _session.commit_reversible_command ();
 713                                         }
 714
 715                                 } else {
 716
 717                                         /* click: change just this route */
 718
 719                                         // XXX no undo yet
 720
 721                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 722                                 }
 723                         }
 724                 }
 725         }
 726
 727         return true;
 728
 729 }
 730
 731 gint
 732 GainMeter::meter_release(GdkEventButton* ev)
 733 {
 734
 735         if(!ignore_toggle){
 736                 if (wait_for_release){
 737                         wait_for_release = false;
 738                         set_meter_point (*(dynamic_cast<Route*>(_io.get())), old_meter_point);
 739                 }
 740         }
 741         return true;
 742 }
 743
 744 void
 745 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 746 {
 747         route.set_meter_point (mp, this);
 748 }
 749
 750 void
 751 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 752 {
 753         RouteGroup* mix_group;
 754
 755         if((mix_group = route.mix_group()) != 0){
 756                 mix_group->apply (&Route::set_meter_point, mp, this);
 757         } else {
 758                 route.set_meter_point (mp, this);
 759         }
 760 }
 761
 762 void
 763 GainMeter::meter_point_clicked ()
 764 {
 765         Route* r;
 766
 767         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 768
 769         }
 770 }
 771
 772 gint
 773 GainMeter::start_gain_touch (GdkEventButton* ev)
 774 {
 775         _io->start_gain_touch ();
 776         return FALSE;
 777 }
 778
 779 gint
 780 GainMeter::end_gain_touch (GdkEventButton* ev)
 781 {
 782         _io->end_gain_touch ();
 783         return FALSE;
 784 }
 785
 786 gint
 787 GainMeter::gain_automation_state_button_event (GdkEventButton *ev)
 788 {
 789         if (ev->type == GDK_BUTTON_RELEASE) {
 790                 return TRUE;
 791         }
 792
 793         switch (ev->button) {
 794                 case 1:
 795                         gain_astate_menu.popup (1, ev->time);
 796                         break;
 797                 default:
 798                         break;
 799         }
 800
 801         return TRUE;
 802 }
 803
 804 gint
 805 GainMeter::gain_automation_style_button_event (GdkEventButton *ev)
 806 {
 807         if (ev->type == GDK_BUTTON_RELEASE) {
 808                 return TRUE;
 809         }
 810
 811         switch (ev->button) {
 812         case 1:
 813                 gain_astyle_menu.popup (1, ev->time);
 814                 break;
 815         default:
 816                 break;
 817         }
 818         return TRUE;
 819 }
 820
 821 string
 822 GainMeter::astate_string (AutoState state)
 823 {
 824         return _astate_string (state, false);
 825 }
 826
 827 string
 828 GainMeter::short_astate_string (AutoState state)
 829 {
 830         return _astate_string (state, true);
 831 }
 832
 833 string
 834 GainMeter::_astate_string (AutoState state, bool shrt)
 835 {
 836         string sstr;
 837
 838         switch (state) {
 839         case Off:
 840                 sstr = (shrt ? "O" : _("O"));
 841                 break;
 842         case Play:
 843                 sstr = (shrt ? "P" : _("P"));
 844                 break;
 845         case Touch:
 846                 sstr = (shrt ? "T" : _("T"));
 847                 break;
 848         case Write:
 849                 sstr = (shrt ? "W" : _("W"));
 850                 break;
 851         }
 852
 853         return sstr;
 854 }
 855
 856 string
 857 GainMeter::astyle_string (AutoStyle style)
 858 {
 859         return _astyle_string (style, false);
 860 }
 861
 862 string
 863 GainMeter::short_astyle_string (AutoStyle style)
 864 {
 865         return _astyle_string (style, true);
 866 }
 867
 868 string
 869 GainMeter::_astyle_string (AutoStyle style, bool shrt)
 870 {
 871         if (style & Trim) {
 872                 return _("Trim");
 873         } else {
 874                 /* XXX it might different in different languages */
 875
 876                 return (shrt ? _("Abs") : _("Abs"));
 877         }
 878 }
 879
 880 void
 881 GainMeter::gain_automation_style_changed ()
 882 {
 883   // Route* _route = dynamic_cast<Route*>(&_io);
 884         switch (_width) {
 885         case Wide:
 886                 gain_automation_style_button.set_label (astyle_string(_io->gain_automation_curve().automation_style()));
 887                 break;
 888         case Narrow:
 889                 gain_automation_style_button.set_label  (short_astyle_string(_io->gain_automation_curve().automation_style()));
 890                 break;
 891         }
 892 }
 893
 894 void
 895 GainMeter::gain_automation_state_changed ()
 896 {
 897         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::gain_automation_state_changed));
 898         //Route* _route = dynamic_cast<Route*>(&_io);
 899
 900         bool x;
 901
 902         switch (_width) {
 903         case Wide:
 904                 gain_automation_state_button.set_label (astate_string(_io->gain_automation_curve().automation_state()));
 905                 break;
 906         case Narrow:
 907                 gain_automation_state_button.set_label (short_astate_string(_io->gain_automation_curve().automation_state()));
 908                 break;
 909         }
 910
 911         x = (_io->gain_automation_state() != Off);
 912
 913         if (gain_automation_state_button.get_active() != x) {
 914                 ignore_toggle = true;
 915                 gain_automation_state_button.set_active (x);
 916                 ignore_toggle = false;
 917         }
 918
 919         update_gain_sensitive ();
 920
 921         /* start watching automation so that things move */
 922
 923         gain_watching.disconnect();
 924
 925         if (x) {
 926                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeter::effective_gain_display));
 927         }
 928 }