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         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
  98         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
  99         gain_slider->set_name ("GainFader");
 100
 101         gain_display.set_name ("MixerStripGainDisplay");
 102         gain_display.set_has_frame (false);
 103         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 104         gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
 105         gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 106         gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 107
 108         gain_display_box.set_name ("MeterMetricsStrip");
 109         gain_display_box.set_homogeneous (true);
 110         gain_display_box.set_spacing (2);
 111         gain_display_box.pack_start (gain_display, true, true);
 112
 113         peak_display.set_name ("MixerStripPeakDisplay");
 114 //      peak_display.set_has_frame (false);
 115 //      peak_display.set_editable (false);
 116         set_size_request_to_display_given_text  (peak_display, "-80.g", 2, 6); /* note the descender */
 117         max_peak = minus_infinity();
 118         peak_display.set_label (_("-inf"));
 119         peak_display.unset_flags (Gtk::CAN_FOCUS);
 120
 121         meter_metric_area.set_name ("MeterMetricsStrip");
 122         set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
 123
 124         meter_packer.set_spacing (2);
 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 route (ie. we're not the click),
 159                    pack some route-dependent stuff.
 160                 */
 161
 162                 gain_display_box.pack_end (peak_display, true, true);
 163
 164                 hbox.pack_end (meter_packer, true, true);
 165
 166                 using namespace Menu_Helpers;
 167
 168                 gain_astate_menu.items().push_back (MenuElem (_("Manual"),
 169                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 170                                                                   Parameter(GainAutomation), (AutoState) Off)));
 171                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 172                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 173                                                                   Parameter(GainAutomation), (AutoState) Play)));
 174                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 175                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 176                                                                   Parameter(GainAutomation), (AutoState) Write)));
 177                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 178                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 179                                                                   Parameter(GainAutomation), (AutoState) Touch)));
 180
 181                 gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 182                 gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 183
 184                 gain_astate_menu.set_name ("ArdourContextMenu");
 185                 gain_astyle_menu.set_name ("ArdourContextMenu");
 186
 187                 gain_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_style_button_event), false);
 188                 gain_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_state_button_event), false);
 189
 190                 r->gain_control()->list()->automation_state_changed.connect (mem_fun(*this, &GainMeter::gain_automation_state_changed));
 191                 r->gain_control()->list()->automation_style_changed.connect (mem_fun(*this, &GainMeter::gain_automation_style_changed));
 192                 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 193
 194                 gain_automation_state_changed ();
 195         }
 196
 197         set_spacing (2);
 198
 199         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 200         pack_start (hbox, Gtk::PACK_SHRINK);
 201
 202         _io->gain_control()->Changed.connect (mem_fun(*this, &GainMeter::gain_changed));
 203
 204         meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 205         gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeter::gain_adjusted));
 206         peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeter::peak_button_release), false);
 207         gain_display.signal_key_press_event().connect (mem_fun(*this, &GainMeter::gain_key_press), false);
 208
 209         Config->ParameterChanged.connect (mem_fun (*this, &GainMeter::parameter_changed));
 210
 211         gain_changed ();
 212         show_gain ();
 213
 214         update_gain_sensitive ();
 215
 216         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 217         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 218
 219         UI::instance()->theme_changed.connect (mem_fun(*this, &GainMeter::on_theme_changed));
 220
 221         fader_centering_box->show();
 222         fader_vbox->show();
 223         gain_slider->show();
 224
 225         hbox.show();
 226         meter_packer.show();
 227         gain_display.show();
 228         peak_display.show();
 229         gain_display_box.show();
 230         fader_box.show();
 231         meter_metric_area.show();
 232         gain_automation_style_button.show();
 233         gain_automation_state_button.show();
 234         show();
 235 }
 236
 237 void
 238 GainMeter::set_width (Width w)
 239 {
 240         switch (w) {
 241         case Wide:
 242                 peak_display.show();
 243                 break;
 244         case Narrow:
 245                 peak_display.hide();
 246                 break;
 247         }
 248
 249         _width = w;
 250         setup_meters ();
 251 }
 252
 253 Glib::RefPtr<Gdk::Pixmap>
 254 GainMeter::render_metrics (Gtk::Widget& w)
 255 {
 256         //cerr << "GainMeter::render_metrics() called, red = " << w.get_style()->get_bg(Gtk::STATE_NORMAL).get_red() << endl;//DEBUG
 257         Glib::RefPtr<Gdk::Window> win (w.get_window());
 258         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 259         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 260         gint width, height;
 261         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 262         char buf[32];
 263
 264         win->get_size (width, height);
 265
 266         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 267
 268         metric_pixmaps[w.get_name()] = pixmap;
 269
 270         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 271
 272         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 273
 274         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 275
 276                 float fraction = log_meter (db_points[i]);
 277                 gint pos = height - (gint) floor (height * fraction);
 278
 279                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 280
 281                 layout->set_text (buf);
 282
 283                 /* we want logical extents, not ink extents here */
 284
 285                 int width, height;
 286                 layout->get_pixel_size (width, height);
 287
 288                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 289                 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
 290         }
 291
 292         return pixmap;
 293 }
 294
 295 gint
 296 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 297 {
 298         /* Only draw dB scale if we're metering audio */
 299         if (_io->n_inputs().n_audio() + _io->n_outputs().n_audio() == 0)
 300                 return true;
 301
 302         static Glib::RefPtr<Gtk::Style> meter_style;
 303
 304         if (style_changed) {
 305                 meter_style = meter_metric_area.get_style();
 306         }
 307
 308         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 309         Glib::RefPtr<Gdk::GC> fg_gc (meter_style->get_fg_gc (Gtk::STATE_NORMAL));
 310         Glib::RefPtr<Gdk::GC> bg_gc (meter_style->get_bg_gc (Gtk::STATE_NORMAL));
 311
 312         GdkRectangle base_rect;
 313         GdkRectangle draw_rect;
 314         gint width, height;
 315
 316         win->get_size (width, height);
 317
 318         base_rect.width = width;
 319         base_rect.height = height;
 320         base_rect.x = 0;
 321         base_rect.y = 0;
 322
 323         Glib::RefPtr<Gdk::Pixmap> pixmap;
 324         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 325
 326         if (i == metric_pixmaps.end() || style_changed) {
 327                 pixmap = render_metrics (meter_metric_area);
 328         } else {
 329                 pixmap = i->second;
 330         }
 331
 332         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 333         win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 334         win->draw_drawable (fg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 335
 336         style_changed = false;
 337         return true;
 338 }
 339
 340 void
 341 GainMeter::on_theme_changed()
 342 {
 343         style_changed = true;
 344 }
 345
 346 GainMeter::~GainMeter ()
 347 {
 348         if (meter_menu) {
 349                 delete meter_menu;
 350         }
 351
 352         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 353                 if ((*i).meter) {
 354                         delete (*i).meter;
 355                 }
 356         }
 357 }
 358
 359 void
 360 GainMeter::update_meters ()
 361 {
 362         vector<MeterInfo>::iterator i;
 363         uint32_t n;
 364         float peak, mpeak;
 365         char buf[32];
 366
 367         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 368                 if ((*i).packed) {
 369                         peak = _io->peak_meter().peak_power (n);
 370
 371                         (*i).meter->set (log_meter (peak));
 372
 373                         mpeak = _io->peak_meter().max_peak_power(n);
 374
 375                         if (mpeak > max_peak) {
 376                                 max_peak = mpeak;
 377                                 /* set peak display */
 378                                 if (max_peak <= -200.0f) {
 379                                         peak_display.set_label (_("-inf"));
 380                                 } else {
 381                                         snprintf (buf, sizeof(buf), "%.1f", max_peak);
 382                                         peak_display.set_label (buf);
 383                                 }
 384
 385                                 if (max_peak >= 0.0f) {
 386                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 387                                 }
 388                         }
 389                 }
 390         }
 391 }
 392
 393 void
 394 GainMeter::parameter_changed(const char* parameter_name)
 395 {
 396 #define PARAM_IS(x) (!strcmp (parameter_name, (x)))
 397
 398         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::parameter_changed), parameter_name));
 399
 400         if (PARAM_IS ("meter-hold")) {
 401
 402                 vector<MeterInfo>::iterator i;
 403                 uint32_t n;
 404
 405                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 406
 407                         (*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
 408                 }
 409         }
 410
 411 #undef PARAM_IS
 412 }
 413
 414 void
 415 GainMeter::hide_all_meters ()
 416 {
 417         bool remove_metric_area = false;
 418
 419         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 420                 if ((*i).packed) {
 421                         remove_metric_area = true;
 422                         meter_packer.remove (*((*i).meter));
 423                         (*i).packed = false;
 424                 }
 425         }
 426
 427         if (remove_metric_area) {
 428                 if (meter_metric_area.get_parent()) {
 429                         meter_packer.remove (meter_metric_area);
 430                 }
 431         }
 432 }
 433
 434 void
 435 GainMeter::setup_meters ()
 436 {
 437         uint32_t nmeters = _io->n_outputs().n_total();
 438         guint16 width;
 439
 440         hide_all_meters ();
 441
 442         Route* r;
 443
 444         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 445
 446                 switch (r->meter_point()) {
 447                 case MeterInput:
 448                         nmeters = r->n_inputs().n_total();
 449                         break;
 450                 case MeterPreFader:
 451                         nmeters = r->pre_fader_streams().n_total();
 452                         break;
 453                 case MeterPostFader:
 454                         nmeters = r->n_outputs().n_total();
 455                         break;
 456                 }
 457
 458         } else {
 459
 460                 nmeters = _io->n_outputs().n_total();
 461
 462         }
 463
 464         if (nmeters == 0) {
 465                 return;
 466         }
 467
 468         if (nmeters <= 2) {
 469                 width = regular_meter_width;
 470         } else {
 471                 width = thin_meter_width;
 472         }
 473
 474         while (meters.size() < nmeters) {
 475                 meters.push_back (MeterInfo());
 476         }
 477
 478         /* pack them backwards */
 479
 480         if (_width == Wide) {
 481                 meter_packer.pack_end (meter_metric_area, false, false);
 482                 meter_metric_area.show_all ();
 483         }
 484
 485         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 486                 if (meters[n].width != width) {
 487                         delete meters[n].meter;
 488                         meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical);
 489                         meters[n].width = width;
 490
 491                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 492                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 493                 }
 494
 495                 meter_packer.pack_end (*meters[n].meter, false, false);
 496                 meters[n].meter->show_all ();
 497                 meters[n].packed = true;
 498         }
 499 }
 500
 501 int
 502 GainMeter::get_gm_width ()
 503 {
 504         Gtk::Requisition sz = hbox.size_request ();
 505         return sz.width;
 506 }
 507
 508 bool
 509 GainMeter::gain_key_press (GdkEventKey* ev)
 510 {
 511         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 512                 /* drop through to normal handling */
 513                 return false;
 514         }
 515         /* illegal key for gain entry */
 516         return true;
 517 }
 518
 519 bool
 520 GainMeter::peak_button_release (GdkEventButton* ev)
 521 {
 522         /* reset peak label */
 523
 524         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
 525                 ResetAllPeakDisplays ();
 526         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 527                 Route* r;
 528                 if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 529                         ResetGroupPeakDisplays (r->mix_group());
 530                 }
 531         } else {
 532                 reset_peak_display ();
 533         }
 534
 535         return true;
 536 }
 537
 538 void
 539 GainMeter::reset_peak_display ()
 540 {
 541         Route * r;
 542         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 543                 r->peak_meter().reset_max();
 544         }
 545
 546         max_peak = -INFINITY;
 547         peak_display.set_label (_("-Inf"));
 548         peak_display.set_name ("MixerStripPeakDisplay");
 549 }
 550
 551 void
 552 GainMeter::reset_group_peak_display (RouteGroup* group)
 553 {
 554         Route* r;
 555         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 556                 if (group == r->mix_group()) {
 557                         reset_peak_display ();
 558                 }
 559         }
 560 }
 561
 562 gint
 563 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 564 {
 565         switch (ev->button) {
 566         case 1:
 567                 meters[which].meter->clear();
 568                 max_peak = minus_infinity();
 569                 peak_display.set_label (_("-inf"));
 570                 peak_display.set_name ("MixerStripPeakDisplay");
 571                 break;
 572
 573         case 3:
 574                 // popup_meter_menu (ev);
 575                 break;
 576         };
 577
 578         return TRUE;
 579 }
 580
 581 void
 582 GainMeter::popup_meter_menu (GdkEventButton *ev)
 583 {
 584         using namespace Menu_Helpers;
 585
 586         if (meter_menu == 0) {
 587                 meter_menu = new Gtk::Menu;
 588                 MenuList& items = meter_menu->items();
 589
 590                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 591                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 592                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 593                 items.push_back (SeparatorElem());
 594                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 595                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 596                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 597         }
 598
 599         meter_menu->popup (1, ev->time);
 600 }
 601
 602 bool
 603 GainMeter::gain_focused (GdkEventFocus* ev)
 604 {
 605         if (ev->in) {
 606                 gain_display.select_region (0, -1);
 607         } else {
 608                 gain_display.select_region (0, 0);
 609         }
 610         return false;
 611 }
 612
 613 void
 614 GainMeter::gain_activated ()
 615 {
 616         float f;
 617
 618         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 619
 620                 /* clamp to displayable values */
 621
 622                 f = min (f, 6.0f);
 623
 624                 _io->gain_control()->set_value (dB_to_coefficient(f));
 625
 626                 if (gain_display.has_focus()) {
 627                         PublicEditor::instance().reset_focus();
 628                 }
 629         }
 630 }
 631
 632 void
 633 GainMeter::show_gain ()
 634 {
 635         char buf[32];
 636
 637         float v = gain_adjustment.get_value();
 638
 639         if (v == 0.0) {
 640                 strcpy (buf, _("-inf"));
 641         } else {
 642                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 643         }
 644
 645         gain_display.set_text (buf);
 646 }
 647
 648 void
 649 GainMeter::gain_adjusted ()
 650 {
 651         if (!ignore_toggle) {
 652                 _io->gain_control()->set_value (slider_position_to_gain (gain_adjustment.get_value()));
 653         }
 654         show_gain ();
 655 }
 656
 657 void
 658 GainMeter::effective_gain_display ()
 659 {
 660         gfloat value = gain_to_slider_position (_io->effective_gain());
 661
 662         if (gain_adjustment.get_value() != value) {
 663                 ignore_toggle = true;
 664                 gain_adjustment.set_value (value);
 665                 ignore_toggle = false;
 666         }
 667 }
 668
 669 void
 670 GainMeter::gain_changed ()
 671 {
 672         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 673 }
 674
 675 void
 676 GainMeter::set_meter_strip_name (const char * name)
 677 {
 678         meter_metric_area.set_name (name);
 679 }
 680
 681 void
 682 GainMeter::set_fader_name (const char * name)
 683 {
 684         gain_slider->set_name (name);
 685 }
 686
 687 void
 688 GainMeter::update_gain_sensitive ()
 689 {
 690         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io->gain_control()->list()->automation_state() & Play));
 691 }
 692
 693
 694 static MeterPoint
 695 next_meter_point (MeterPoint mp)
 696 {
 697         switch (mp) {
 698         case MeterInput:
 699                 return MeterPreFader;
 700                 break;
 701
 702         case MeterPreFader:
 703                 return MeterPostFader;
 704                 break;
 705
 706         case MeterPostFader:
 707                 return MeterInput;
 708                 break;
 709         }
 710         /*NOTREACHED*/
 711         return MeterInput;
 712 }
 713
 714 gint
 715 GainMeter::meter_press(GdkEventButton* ev)
 716 {
 717         Route* _route;
 718
 719         wait_for_release = false;
 720
 721         if ((_route = dynamic_cast<Route*>(_io.get())) == 0) {
 722                 return FALSE;
 723         }
 724
 725         if (!ignore_toggle) {
 726
 727                 if (Keyboard::is_context_menu_event (ev)) {
 728
 729                         // no menu at this time.
 730
 731                 } else {
 732
 733                         if (ev->button == 2) {
 734
 735                                 // ctrl-button2 click is the midi binding click
 736                                 // button2-click is "momentary"
 737
 738                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
 739                                         wait_for_release = true;
 740                                         old_meter_point = _route->meter_point ();
 741                                 }
 742                         }
 743
 744                         if (ev->button == 1 || ev->button == 2) {
 745
 746                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
 747
 748                                         /* ctrl-shift-click applies change to all routes */
 749
 750                                         _session.begin_reversible_command (_("meter point change"));
 751                                         Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 752                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 753                                         cmd->mark();
 754                                         _session.add_command (cmd);
 755                                         _session.commit_reversible_command ();
 756
 757
 758                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 759
 760                                         /* ctrl-click: solo mix group.
 761                                            ctrl-button2 is MIDI learn.
 762                                         */
 763
 764                                         if (ev->button == 1) {
 765                                                 _session.begin_reversible_command (_("meter point change"));
 766                                                 Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 767                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 768                                                 cmd->mark();
 769                                                 _session.add_command (cmd);
 770                                                 _session.commit_reversible_command ();
 771                                         }
 772
 773                                 } else {
 774
 775                                         /* click: change just this route */
 776
 777                                         // XXX no undo yet
 778
 779                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 780                                 }
 781                         }
 782                 }
 783         }
 784
 785         return true;
 786
 787 }
 788
 789 gint
 790 GainMeter::meter_release(GdkEventButton* ev)
 791 {
 792
 793         if(!ignore_toggle){
 794                 if (wait_for_release){
 795                         wait_for_release = false;
 796                         set_meter_point (*(dynamic_cast<Route*>(_io.get())), old_meter_point);
 797                 }
 798         }
 799         return true;
 800 }
 801
 802 void
 803 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 804 {
 805         route.set_meter_point (mp, this);
 806 }
 807
 808 void
 809 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 810 {
 811         RouteGroup* mix_group;
 812
 813         if((mix_group = route.mix_group()) != 0){
 814                 mix_group->apply (&Route::set_meter_point, mp, this);
 815         } else {
 816                 route.set_meter_point (mp, this);
 817         }
 818 }
 819
 820 void
 821 GainMeter::meter_point_clicked ()
 822 {
 823         Route* r;
 824
 825         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 826
 827         }
 828 }
 829
 830 gint
 831 GainMeter::start_gain_touch (GdkEventButton* ev)
 832 {
 833         _io->gain_control()->list()->start_touch ();
 834         return FALSE;
 835 }
 836
 837 gint
 838 GainMeter::end_gain_touch (GdkEventButton* ev)
 839 {
 840         _io->gain_control()->list()->stop_touch ();
 841         return FALSE;
 842 }
 843
 844 gint
 845 GainMeter::gain_automation_state_button_event (GdkEventButton *ev)
 846 {
 847         if (ev->type == GDK_BUTTON_RELEASE) {
 848                 return TRUE;
 849         }
 850
 851         switch (ev->button) {
 852                 case 1:
 853                         gain_astate_menu.popup (1, ev->time);
 854                         break;
 855                 default:
 856                         break;
 857         }
 858
 859         return TRUE;
 860 }
 861
 862 gint
 863 GainMeter::gain_automation_style_button_event (GdkEventButton *ev)
 864 {
 865         if (ev->type == GDK_BUTTON_RELEASE) {
 866                 return TRUE;
 867         }
 868
 869         switch (ev->button) {
 870         case 1:
 871                 gain_astyle_menu.popup (1, ev->time);
 872                 break;
 873         default:
 874                 break;
 875         }
 876         return TRUE;
 877 }
 878
 879 string
 880 GainMeter::astate_string (AutoState state)
 881 {
 882         return _astate_string (state, false);
 883 }
 884
 885 string
 886 GainMeter::short_astate_string (AutoState state)
 887 {
 888         return _astate_string (state, true);
 889 }
 890
 891 string
 892 GainMeter::_astate_string (AutoState state, bool shrt)
 893 {
 894         string sstr;
 895
 896         switch (state) {
 897         case Off:
 898                 sstr = (shrt ? "M" : _("M"));
 899                 break;
 900         case Play:
 901                 sstr = (shrt ? "P" : _("P"));
 902                 break;
 903         case Touch:
 904                 sstr = (shrt ? "T" : _("T"));
 905                 break;
 906         case Write:
 907                 sstr = (shrt ? "W" : _("W"));
 908                 break;
 909         }
 910
 911         return sstr;
 912 }
 913
 914 string
 915 GainMeter::astyle_string (AutoStyle style)
 916 {
 917         return _astyle_string (style, false);
 918 }
 919
 920 string
 921 GainMeter::short_astyle_string (AutoStyle style)
 922 {
 923         return _astyle_string (style, true);
 924 }
 925
 926 string
 927 GainMeter::_astyle_string (AutoStyle style, bool shrt)
 928 {
 929         if (style & Trim) {
 930                 return _("Trim");
 931         } else {
 932                 /* XXX it might different in different languages */
 933
 934                 return (shrt ? _("Abs") : _("Abs"));
 935         }
 936 }
 937
 938 void
 939 GainMeter::gain_automation_style_changed ()
 940 {
 941   // Route* _route = dynamic_cast<Route*>(&_io);
 942         switch (_width) {
 943         case Wide:
 944                 gain_automation_style_button.set_label (astyle_string(_io->gain_control()->list()->automation_style()));
 945                 break;
 946         case Narrow:
 947                 gain_automation_style_button.set_label  (short_astyle_string(_io->gain_control()->list()->automation_style()));
 948                 break;
 949         }
 950 }
 951
 952 void
 953 GainMeter::gain_automation_state_changed ()
 954 {
 955         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::gain_automation_state_changed));
 956         //Route* _route = dynamic_cast<Route*>(&_io);
 957
 958         bool x;
 959
 960         switch (_width) {
 961         case Wide:
 962                 gain_automation_state_button.set_label (astate_string(_io->gain_control()->list()->automation_state()));
 963                 break;
 964         case Narrow:
 965                 gain_automation_state_button.set_label (short_astate_string(_io->gain_control()->list()->automation_state()));
 966                 break;
 967         }
 968
 969         x = (_io->gain_control()->list()->automation_state() != Off);
 970
 971         if (gain_automation_state_button.get_active() != x) {
 972                 ignore_toggle = true;
 973                 gain_automation_state_button.set_active (x);
 974                 ignore_toggle = false;
 975         }
 976
 977         update_gain_sensitive ();
 978
 979         /* start watching automation so that things move */
 980
 981         gain_watching.disconnect();
 982
 983         if (x) {
 984                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeter::effective_gain_display));
 985         }
 986 }