gtk2_ardour/gain_meter.cc

   1 /*
   2   Copyright (C) 2002 Paul Davis
   3
   4   This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation; either version 2 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program; if not, write to the Free Software
  16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <limits.h>
  21
  22 #include <ardour/io.h>
  23 #include <ardour/route.h>
  24 #include <ardour/route_group.h>
  25 #include <ardour/session.h>
  26 #include <ardour/session_route.h>
  27 #include <ardour/dB.h>
  28
  29 #include <gtkmm/style.h>
  30 #include <gdkmm/color.h>
  31 #include <gtkmm2ext/utils.h>
  32 #include <gtkmm2ext/fastmeter.h>
  33 #include <gtkmm2ext/stop_signal.h>
  34 #include <gtkmm2ext/barcontroller.h>
  35 #include <midi++/manager.h>
  36 #include <pbd/fastlog.h>
  37
  38 #include "ardour_ui.h"
  39 #include "gain_meter.h"
  40 #include "utils.h"
  41 #include "logmeter.h"
  42 #include "gui_thread.h"
  43 #include "keyboard.h"
  44 #include "public_editor.h"
  45
  46 #include <ardour/session.h>
  47 #include <ardour/route.h>
  48 #include <ardour/meter.h>
  49
  50 #include "i18n.h"
  51
  52 using namespace ARDOUR;
  53 using namespace PBD;
  54 using namespace Gtkmm2ext;
  55 using namespace Gtk;
  56 using namespace sigc;
  57 using namespace std;
  58
  59 sigc::signal<void> GainMeter::ResetAllPeakDisplays;
  60 sigc::signal<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
  61 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
  62 Glib::RefPtr<Gdk::Pixbuf> GainMeter::rail;
  63 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  64
  65 int
  66 GainMeter::setup_slider_pix ()
  67 {
  68         slider = ::get_icon ("fader_belt");
  69         return 0;
  70 }
  71
  72 GainMeter::GainMeter (boost::shared_ptr<IO> io, Session& s)
  73         : _io (io),
  74           _session (s),
  75           gain_slider (0),
  76           // 0.781787 is the value needed for gain to be set to 0.
  77           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  78           gain_automation_style_button (""),
  79           gain_automation_state_button ("")
  80
  81 {
  82         if (slider == 0) {
  83                 setup_slider_pix ();
  84         }
  85
  86         ignore_toggle = false;
  87         meter_menu = 0;
  88         next_release_selects = false;
  89         style_changed = true;
  90
  91         gain_slider = manage (new VSliderController (slider,
  92                                                      &gain_adjustment,
  93                                                      _io->gain_control(),
  94                                                      false));
  95
  96         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
  97         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
  98         gain_slider->set_name ("GainFader");
  99
 100         gain_display.set_name ("MixerStripGainDisplay");
 101         gain_display.set_has_frame (false);
 102         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 103         gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
 104         gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 105         gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 106
 107         gain_display_box.set_name ("MeterMetricsStrip");
 108         gain_display_box.set_homogeneous (true);
 109         gain_display_box.set_spacing (2);
 110         gain_display_box.pack_start (gain_display, true, true);
 111
 112         peak_display.set_name ("MixerStripPeakDisplay");
 113 //      peak_display.set_has_frame (false);
 114 //      peak_display.set_editable (false);
 115         set_size_request_to_display_given_text  (peak_display, "-80.g", 2, 6); /* note the descender */
 116         max_peak = minus_infinity();
 117         peak_display.set_label (_("-inf"));
 118         peak_display.unset_flags (Gtk::CAN_FOCUS);
 119
 120         meter_metric_area.set_name ("MeterMetricsStrip");
 121         set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
 122
 123         meter_packer.set_spacing (2);
 124
 125         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 126         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 127
 128         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
 129         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
 130
 131         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 132         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 133
 134         gain_automation_state_button.set_size_request(15, 15);
 135         gain_automation_style_button.set_size_request(15, 15);
 136
 137         HBox* fader_centering_box = manage (new HBox);
 138         fader_centering_box->pack_start (*gain_slider, true, false);
 139
 140         fader_vbox = manage (new Gtk::VBox());
 141         fader_vbox->set_spacing (0);
 142         fader_vbox->pack_start (*fader_centering_box, false, false, 0);
 143
 144         hbox.set_spacing (2);
 145
 146         if (_io->default_type() == ARDOUR::DataType::AUDIO) {
 147                 hbox.pack_start (*fader_vbox, true, true);
 148         }
 149
 150         set_width (Narrow);
 151
 152         Route* r;
 153
 154         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 155
 156                 /*
 157                    if we have a route (ie. we're not the click),
 158                    pack some route-dependent stuff.
 159                 */
 160
 161                 gain_display_box.pack_end (peak_display, true, true);
 162
 163                 hbox.pack_end (meter_packer, true, true);
 164
 165                 using namespace Menu_Helpers;
 166
 167                 gain_astate_menu.items().push_back (MenuElem (_("Manual"),
 168                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Off)));
 169                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 170                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Play)));
 171                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 172                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Write)));
 173                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 174                                                       bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Touch)));
 175
 176                 gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 177                 gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 178
 179                 gain_astate_menu.set_name ("ArdourContextMenu");
 180                 gain_astyle_menu.set_name ("ArdourContextMenu");
 181
 182                 gain_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_style_button_event), false);
 183                 gain_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_state_button_event), false);
 184
 185                 r->gain_automation_curve().automation_state_changed.connect (mem_fun(*this, &GainMeter::gain_automation_state_changed));
 186                 r->gain_automation_curve().automation_style_changed.connect (mem_fun(*this, &GainMeter::gain_automation_style_changed));
 187                 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 188
 189                 gain_automation_state_changed ();
 190         }
 191
 192         set_spacing (2);
 193
 194         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 195         pack_start (hbox, Gtk::PACK_SHRINK);
 196
 197         _io->gain_changed.connect (mem_fun(*this, &GainMeter::gain_changed));
 198
 199         meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 200         gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeter::gain_adjusted));
 201         peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeter::peak_button_release), false);
 202         gain_display.signal_key_press_event().connect (mem_fun(*this, &GainMeter::gain_key_press), false);
 203
 204         Config->ParameterChanged.connect (mem_fun (*this, &GainMeter::parameter_changed));
 205
 206         gain_changed (0);
 207         show_gain ();
 208
 209         update_gain_sensitive ();
 210
 211         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 212         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 213
 214         ThemeChanged.connect (mem_fun(*this, &GainMeter::redraw_pixmaps));
 215 }
 216
 217 void
 218 GainMeter::set_width (Width w)
 219 {
 220         switch (w) {
 221         case Wide:
 222                 peak_display.show();
 223                 break;
 224         case Narrow:
 225                 peak_display.hide();
 226                 break;
 227         }
 228
 229         _width = w;
 230         setup_meters ();
 231 }
 232
 233 Glib::RefPtr<Gdk::Pixmap>
 234 GainMeter::render_metrics (Gtk::Widget& w)
 235 {
 236         cerr << "GainMeter::render_metrics() called, red = " << w.get_style()->get_bg(Gtk::STATE_NORMAL).get_red() << endl;//DEBUG
 237         Glib::RefPtr<Gdk::Window> win (w.get_window());
 238         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 239         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 240         gint width, height;
 241         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 242         char buf[32];
 243
 244         win->get_size (width, height);
 245
 246         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 247
 248         metric_pixmaps[w.get_name()] = pixmap;
 249
 250         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 251
 252         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 253
 254         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 255
 256                 float fraction = log_meter (db_points[i]);
 257                 gint pos = height - (gint) floor (height * fraction);
 258
 259                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 260
 261                 layout->set_text (buf);
 262
 263                 /* we want logical extents, not ink extents here */
 264
 265                 int width, height;
 266                 layout->get_pixel_size (width, height);
 267
 268                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 269                 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
 270         }
 271
 272         return pixmap;
 273 }
 274
 275 gint
 276 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 277 {
 278         static Glib::RefPtr<Gtk::Style> meter_style;
 279
 280         if (style_changed) {
 281                 meter_style = meter_metric_area.get_style();
 282         }
 283
 284         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 285         Glib::RefPtr<Gdk::GC> fg_gc (meter_style->get_fg_gc (Gtk::STATE_NORMAL));
 286         Glib::RefPtr<Gdk::GC> bg_gc (meter_style->get_bg_gc (Gtk::STATE_NORMAL));
 287
 288         GdkRectangle base_rect;
 289         GdkRectangle draw_rect;
 290         gint width, height;
 291
 292         win->get_size (width, height);
 293
 294         base_rect.width = width;
 295         base_rect.height = height;
 296         base_rect.x = 0;
 297         base_rect.y = 0;
 298
 299         Glib::RefPtr<Gdk::Pixmap> pixmap;
 300         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 301
 302         if (i == metric_pixmaps.end() || style_changed) {
 303                 pixmap = render_metrics (meter_metric_area);
 304         } else {
 305                 pixmap = i->second;
 306         }
 307
 308         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 309         win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 310         win->draw_drawable (fg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 311
 312         style_changed = false;
 313         return true;
 314 }
 315
 316 int
 317 GainMeter::redraw_pixmaps(string blah)
 318 {
 319         style_changed = true;
 320         return 0;
 321 }
 322
 323 GainMeter::~GainMeter ()
 324 {
 325         if (meter_menu) {
 326                 delete meter_menu;
 327         }
 328
 329         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 330                 if ((*i).meter) {
 331                         delete (*i).meter;
 332                 }
 333         }
 334 }
 335
 336 void
 337 GainMeter::update_meters ()
 338 {
 339         vector<MeterInfo>::iterator i;
 340         uint32_t n;
 341         float peak, mpeak;
 342         char buf[32];
 343
 344         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 345                 if ((*i).packed) {
 346                         peak = _io->peak_meter().peak_power (n);
 347
 348                         (*i).meter->set (log_meter (peak));
 349
 350                         mpeak = _io->peak_meter().max_peak_power(n);
 351
 352                         if (mpeak > max_peak) {
 353                                 max_peak = mpeak;
 354                                 /* set peak display */
 355                                 if (max_peak <= -200.0f) {
 356                                         peak_display.set_label (_("-inf"));
 357                                 } else {
 358                                         snprintf (buf, sizeof(buf), "%.1f", max_peak);
 359                                         peak_display.set_label (buf);
 360                                 }
 361
 362                                 if (max_peak >= 0.0f) {
 363                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 364                                 }
 365                         }
 366                 }
 367         }
 368 }
 369
 370 void
 371 GainMeter::parameter_changed(const char* parameter_name)
 372 {
 373 #define PARAM_IS(x) (!strcmp (parameter_name, (x)))
 374
 375         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::parameter_changed), parameter_name));
 376
 377         if (PARAM_IS ("meter-hold")) {
 378
 379                 vector<MeterInfo>::iterator i;
 380                 uint32_t n;
 381
 382                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 383
 384                         (*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
 385                 }
 386         }
 387
 388 #undef PARAM_IS
 389 }
 390
 391 void
 392 GainMeter::hide_all_meters ()
 393 {
 394         bool remove_metric_area = false;
 395
 396         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 397                 if ((*i).packed) {
 398                         remove_metric_area = true;
 399                         meter_packer.remove (*((*i).meter));
 400                         (*i).packed = false;
 401                 }
 402         }
 403
 404         if (remove_metric_area) {
 405                 if (meter_metric_area.get_parent()) {
 406                         meter_packer.remove (meter_metric_area);
 407                 }
 408         }
 409 }
 410
 411 void
 412 GainMeter::setup_meters ()
 413 {
 414         uint32_t nmeters = _io->n_outputs().n_total();
 415         guint16 width;
 416
 417         hide_all_meters ();
 418
 419         Route* r;
 420
 421         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 422
 423                 switch (r->meter_point()) {
 424                 case MeterPreFader:
 425                 case MeterInput:
 426                         nmeters = r->n_inputs().n_audio();
 427                         break;
 428                 case MeterPostFader:
 429                         nmeters = r->n_outputs().n_audio();
 430                         break;
 431                 }
 432
 433         } else {
 434
 435                 nmeters = _io->n_outputs().n_total();
 436
 437         }
 438
 439         if (nmeters == 0) {
 440                 return;
 441         }
 442
 443         if (nmeters <= 2) {
 444                 width = regular_meter_width;
 445         } else {
 446                 width = thin_meter_width;
 447         }
 448
 449         while (meters.size() < nmeters) {
 450                 meters.push_back (MeterInfo());
 451         }
 452
 453         /* pack them backwards */
 454
 455         if (_width == Wide) {
 456                 meter_packer.pack_end (meter_metric_area, false, false);
 457                 meter_metric_area.show_all ();
 458         }
 459
 460         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 461                 if (meters[n].width != width) {
 462                         delete meters[n].meter;
 463                         meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical);
 464                         meters[n].width = width;
 465
 466                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 467                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 468                 }
 469
 470                 meter_packer.pack_end (*meters[n].meter, false, false);
 471                 meters[n].meter->show_all ();
 472                 meters[n].packed = true;
 473         }
 474 }
 475
 476 int
 477 GainMeter::get_gm_width ()
 478 {
 479         Gtk::Requisition sz = hbox.size_request ();
 480         return sz.width;
 481 }
 482
 483 bool
 484 GainMeter::gain_key_press (GdkEventKey* ev)
 485 {
 486         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 487                 /* drop through to normal handling */
 488                 return false;
 489         }
 490         /* illegal key for gain entry */
 491         return true;
 492 }
 493
 494 bool
 495 GainMeter::peak_button_release (GdkEventButton* ev)
 496 {
 497         /* reset peak label */
 498
 499         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
 500                 ResetAllPeakDisplays ();
 501         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 502                 Route* r;
 503                 if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 504                         ResetGroupPeakDisplays (r->mix_group());
 505                 }
 506         } else {
 507                 reset_peak_display ();
 508         }
 509
 510         return true;
 511 }
 512
 513 void
 514 GainMeter::reset_peak_display ()
 515 {
 516         Route * r;
 517         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 518                 r->peak_meter().reset_max();
 519         }
 520
 521         max_peak = -INFINITY;
 522         peak_display.set_label (_("-Inf"));
 523         peak_display.set_name ("MixerStripPeakDisplay");
 524 }
 525
 526 void
 527 GainMeter::reset_group_peak_display (RouteGroup* group)
 528 {
 529         Route* r;
 530         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 531                 if (group == r->mix_group()) {
 532                         reset_peak_display ();
 533                 }
 534         }
 535 }
 536
 537 gint
 538 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 539 {
 540         switch (ev->button) {
 541         case 1:
 542                 meters[which].meter->clear();
 543                 max_peak = minus_infinity();
 544                 peak_display.set_label (_("-inf"));
 545                 peak_display.set_name ("MixerStripPeakDisplay");
 546                 break;
 547
 548         case 3:
 549                 // popup_meter_menu (ev);
 550                 break;
 551         };
 552
 553         return TRUE;
 554 }
 555
 556 void
 557 GainMeter::popup_meter_menu (GdkEventButton *ev)
 558 {
 559         using namespace Menu_Helpers;
 560
 561         if (meter_menu == 0) {
 562                 meter_menu = new Gtk::Menu;
 563                 MenuList& items = meter_menu->items();
 564
 565                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 566                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 567                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 568                 items.push_back (SeparatorElem());
 569                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 570                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 571                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 572         }
 573
 574         meter_menu->popup (1, ev->time);
 575 }
 576
 577 bool
 578 GainMeter::gain_focused (GdkEventFocus* ev)
 579 {
 580         if (ev->in) {
 581                 gain_display.select_region (0, -1);
 582         } else {
 583                 gain_display.select_region (0, 0);
 584         }
 585         return false;
 586 }
 587
 588 void
 589 GainMeter::gain_activated ()
 590 {
 591         float f;
 592
 593         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 594
 595                 /* clamp to displayable values */
 596
 597                 f = min (f, 6.0f);
 598
 599                 _io->set_gain (dB_to_coefficient(f), this);
 600
 601                 if (gain_display.has_focus()) {
 602                         PublicEditor::instance().reset_focus();
 603                 }
 604         }
 605 }
 606
 607 void
 608 GainMeter::show_gain ()
 609 {
 610         char buf[32];
 611
 612         float v = gain_adjustment.get_value();
 613
 614         if (v == 0.0) {
 615                 strcpy (buf, _("-inf"));
 616         } else {
 617                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 618         }
 619
 620         gain_display.set_text (buf);
 621 }
 622
 623 void
 624 GainMeter::gain_adjusted ()
 625 {
 626         if (!ignore_toggle) {
 627                 _io->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 628         }
 629         show_gain ();
 630 }
 631
 632 void
 633 GainMeter::effective_gain_display ()
 634 {
 635         gfloat value = gain_to_slider_position (_io->effective_gain());
 636
 637         if (gain_adjustment.get_value() != value) {
 638                 ignore_toggle = true;
 639                 gain_adjustment.set_value (value);
 640                 ignore_toggle = false;
 641         }
 642 }
 643
 644 void
 645 GainMeter::gain_changed (void *src)
 646 {
 647         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 648 }
 649
 650 void
 651 GainMeter::set_meter_strip_name (const char * name)
 652 {
 653         meter_metric_area.set_name (name);
 654 }
 655
 656 void
 657 GainMeter::set_fader_name (const char * name)
 658 {
 659         gain_slider->set_name (name);
 660 }
 661
 662 void
 663 GainMeter::update_gain_sensitive ()
 664 {
 665         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io->gain_automation_state() & Play));
 666 }
 667
 668
 669 static MeterPoint
 670 next_meter_point (MeterPoint mp)
 671 {
 672         switch (mp) {
 673         case MeterInput:
 674                 return MeterPreFader;
 675                 break;
 676
 677         case MeterPreFader:
 678                 return MeterPostFader;
 679                 break;
 680
 681         case MeterPostFader:
 682                 return MeterInput;
 683                 break;
 684         }
 685         /*NOTREACHED*/
 686         return MeterInput;
 687 }
 688
 689 gint
 690 GainMeter::meter_press(GdkEventButton* ev)
 691 {
 692         Route* _route;
 693
 694         wait_for_release = false;
 695
 696         if ((_route = dynamic_cast<Route*>(_io.get())) == 0) {
 697                 return FALSE;
 698         }
 699
 700         if (!ignore_toggle) {
 701
 702                 if (Keyboard::is_context_menu_event (ev)) {
 703
 704                         // no menu at this time.
 705
 706                 } else {
 707
 708                         if (ev->button == 2) {
 709
 710                                 // ctrl-button2 click is the midi binding click
 711                                 // button2-click is "momentary"
 712
 713                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
 714                                         wait_for_release = true;
 715                                         old_meter_point = _route->meter_point ();
 716                                 }
 717                         }
 718
 719                         if (ev->button == 1 || ev->button == 2) {
 720
 721                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
 722
 723                                         /* ctrl-shift-click applies change to all routes */
 724
 725                                         _session.begin_reversible_command (_("meter point change"));
 726                                         Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 727                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 728                                         cmd->mark();
 729                                         _session.add_command (cmd);
 730                                         _session.commit_reversible_command ();
 731
 732
 733                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 734
 735                                         /* ctrl-click: solo mix group.
 736                                            ctrl-button2 is MIDI learn.
 737                                         */
 738
 739                                         if (ev->button == 1) {
 740                                                 _session.begin_reversible_command (_("meter point change"));
 741                                                 Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 742                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 743                                                 cmd->mark();
 744                                                 _session.add_command (cmd);
 745                                                 _session.commit_reversible_command ();
 746                                         }
 747
 748                                 } else {
 749
 750                                         /* click: change just this route */
 751
 752                                         // XXX no undo yet
 753
 754                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 755                                 }
 756                         }
 757                 }
 758         }
 759
 760         return true;
 761
 762 }
 763
 764 gint
 765 GainMeter::meter_release(GdkEventButton* ev)
 766 {
 767
 768         if(!ignore_toggle){
 769                 if (wait_for_release){
 770                         wait_for_release = false;
 771                         set_meter_point (*(dynamic_cast<Route*>(_io.get())), old_meter_point);
 772                 }
 773         }
 774         return true;
 775 }
 776
 777 void
 778 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 779 {
 780         route.set_meter_point (mp, this);
 781 }
 782
 783 void
 784 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 785 {
 786         RouteGroup* mix_group;
 787
 788         if((mix_group = route.mix_group()) != 0){
 789                 mix_group->apply (&Route::set_meter_point, mp, this);
 790         } else {
 791                 route.set_meter_point (mp, this);
 792         }
 793 }
 794
 795 void
 796 GainMeter::meter_point_clicked ()
 797 {
 798         Route* r;
 799
 800         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 801
 802         }
 803 }
 804
 805 gint
 806 GainMeter::start_gain_touch (GdkEventButton* ev)
 807 {
 808         _io->start_gain_touch ();
 809         return FALSE;
 810 }
 811
 812 gint
 813 GainMeter::end_gain_touch (GdkEventButton* ev)
 814 {
 815         _io->end_gain_touch ();
 816         return FALSE;
 817 }
 818
 819 gint
 820 GainMeter::gain_automation_state_button_event (GdkEventButton *ev)
 821 {
 822         if (ev->type == GDK_BUTTON_RELEASE) {
 823                 return TRUE;
 824         }
 825
 826         switch (ev->button) {
 827                 case 1:
 828                         gain_astate_menu.popup (1, ev->time);
 829                         break;
 830                 default:
 831                         break;
 832         }
 833
 834         return TRUE;
 835 }
 836
 837 gint
 838 GainMeter::gain_automation_style_button_event (GdkEventButton *ev)
 839 {
 840         if (ev->type == GDK_BUTTON_RELEASE) {
 841                 return TRUE;
 842         }
 843
 844         switch (ev->button) {
 845         case 1:
 846                 gain_astyle_menu.popup (1, ev->time);
 847                 break;
 848         default:
 849                 break;
 850         }
 851         return TRUE;
 852 }
 853
 854 string
 855 GainMeter::astate_string (AutoState state)
 856 {
 857         return _astate_string (state, false);
 858 }
 859
 860 string
 861 GainMeter::short_astate_string (AutoState state)
 862 {
 863         return _astate_string (state, true);
 864 }
 865
 866 string
 867 GainMeter::_astate_string (AutoState state, bool shrt)
 868 {
 869         string sstr;
 870
 871         switch (state) {
 872         case Off:
 873                 sstr = (shrt ? "M" : _("M"));
 874                 break;
 875         case Play:
 876                 sstr = (shrt ? "P" : _("P"));
 877                 break;
 878         case Touch:
 879                 sstr = (shrt ? "T" : _("T"));
 880                 break;
 881         case Write:
 882                 sstr = (shrt ? "W" : _("W"));
 883                 break;
 884         }
 885
 886         return sstr;
 887 }
 888
 889 string
 890 GainMeter::astyle_string (AutoStyle style)
 891 {
 892         return _astyle_string (style, false);
 893 }
 894
 895 string
 896 GainMeter::short_astyle_string (AutoStyle style)
 897 {
 898         return _astyle_string (style, true);
 899 }
 900
 901 string
 902 GainMeter::_astyle_string (AutoStyle style, bool shrt)
 903 {
 904         if (style & Trim) {
 905                 return _("Trim");
 906         } else {
 907                 /* XXX it might different in different languages */
 908
 909                 return (shrt ? _("Abs") : _("Abs"));
 910         }
 911 }
 912
 913 void
 914 GainMeter::gain_automation_style_changed ()
 915 {
 916   // Route* _route = dynamic_cast<Route*>(&_io);
 917         switch (_width) {
 918         case Wide:
 919                 gain_automation_style_button.set_label (astyle_string(_io->gain_automation_curve().automation_style()));
 920                 break;
 921         case Narrow:
 922                 gain_automation_style_button.set_label  (short_astyle_string(_io->gain_automation_curve().automation_style()));
 923                 break;
 924         }
 925 }
 926
 927 void
 928 GainMeter::gain_automation_state_changed ()
 929 {
 930         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::gain_automation_state_changed));
 931         //Route* _route = dynamic_cast<Route*>(&_io);
 932
 933         bool x;
 934
 935         switch (_width) {
 936         case Wide:
 937                 gain_automation_state_button.set_label (astate_string(_io->gain_automation_curve().automation_state()));
 938                 break;
 939         case Narrow:
 940                 gain_automation_state_button.set_label (short_astate_string(_io->gain_automation_curve().automation_state()));
 941                 break;
 942         }
 943
 944         x = (_io->gain_automation_state() != Off);
 945
 946         if (gain_automation_state_button.get_active() != x) {
 947                 ignore_toggle = true;
 948                 gain_automation_state_button.set_active (x);
 949                 ignore_toggle = false;
 950         }
 951
 952         update_gain_sensitive ();
 953
 954         /* start watching automation so that things move */
 955
 956         gain_watching.disconnect();
 957
 958         if (x) {
 959                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeter::effective_gain_display));
 960         }
 961 }