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