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           regular_meter_width(5)
  78
  79 {
  80         if (slider == 0) {
  81                 setup_slider_pix ();
  82         }
  83
  84         ignore_toggle = false;
  85         meter_menu = 0;
  86         next_release_selects = false;
  87         style_changed = true;
  88
  89         gain_slider = manage (new VSliderController (slider,
  90                                                      &gain_adjustment,
  91                                                      _io->gain_control(),
  92                                                      false));
  93
  94         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
  95         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
  96         gain_slider->set_name ("GainFader");
  97
  98         gain_display.set_name ("MixerStripGainDisplay");
  99         gain_display.set_has_frame (false);
 100         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 101         gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
 102         gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 103         gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 104
 105         gain_display_box.set_homogeneous (true);
 106         gain_display_box.set_spacing (2);
 107         gain_display_box.pack_start (gain_display, true, true);
 108
 109         peak_display.set_name ("MixerStripPeakDisplay");
 110 //      peak_display.set_has_frame (false);
 111 //      peak_display.set_editable (false);
 112         set_size_request_to_display_given_text  (peak_display, "-80.g", 2, 6); /* note the descender */
 113         max_peak = minus_infinity();
 114         peak_display.set_label (_("-inf"));
 115         peak_display.unset_flags (Gtk::CAN_FOCUS);
 116
 117         meter_metric_area.set_name ("AudioTrackMetrics");
 118         set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
 119
 120         meter_packer.set_spacing (2);
 121
 122         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 123         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 124
 125         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
 126         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
 127
 128         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 129         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 130
 131         gain_automation_state_button.set_size_request(15, 15);
 132         gain_automation_style_button.set_size_request(15, 15);
 133
 134         HBox* fader_centering_box = manage (new HBox);
 135         fader_centering_box->pack_start (*gain_slider, true, false);
 136
 137         fader_vbox = manage (new Gtk::VBox());
 138         fader_vbox->set_spacing (0);
 139         fader_vbox->pack_start (*fader_centering_box, false, false, 0);
 140
 141         hbox.set_spacing (2);
 142         hbox.pack_start (*fader_vbox, true, true);
 143
 144         Route* r;
 145
 146         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 147
 148                 /*
 149                    if we have a non-hidden route (ie. we're not the click or the auditioner),
 150                    pack some route-dependent stuff.
 151                 */
 152
 153                 gain_display_box.pack_end (peak_display, true, true);
 154                 hbox.pack_end (meter_packer, true, true);
 155
 156                 if (!r->hidden()) {
 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
 181                         fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 182                         gain_automation_state_changed ();
 183                 }
 184         }
 185
 186         set_spacing (2);
 187
 188         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 189         pack_start (hbox, Gtk::PACK_SHRINK);
 190
 191         _io->gain_changed.connect (mem_fun(*this, &GainMeter::gain_changed));
 192
 193         meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 194         gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeter::gain_adjusted));
 195         peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeter::peak_button_release), false);
 196         gain_display.signal_key_press_event().connect (mem_fun(*this, &GainMeter::gain_key_press), false);
 197
 198         Config->ParameterChanged.connect (mem_fun (*this, &GainMeter::parameter_changed));
 199
 200         gain_changed (0);
 201         show_gain ();
 202
 203         update_gain_sensitive ();
 204
 205         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
 206         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 207
 208         UI::instance()->theme_changed.connect (mem_fun(*this, &GainMeter::on_theme_changed));
 209         ColorsChanged.connect (bind(mem_fun (*this, &GainMeter::color_handler), false));
 210         DPIReset.connect (bind(mem_fun (*this, &GainMeter::color_handler), true));
 211         //hide_all();
 212 }
 213
 214 void
 215 GainMeter::set_width (Width w, int len)
 216 {
 217         _width = w;
 218         setup_meters (len);
 219 }
 220
 221 Glib::RefPtr<Gdk::Pixmap>
 222 GainMeter::render_metrics (Gtk::Widget& w)
 223 {
 224         //cerr << "name: " << w.get_name();//DEBUG
 225         //cerr << " bg_red = " << w.get_style()->get_bg(Gtk::STATE_NORMAL).get_red();//DEBUG
 226         //cerr << " fg_red = " << w.get_style()->get_fg(Gtk::STATE_NORMAL).get_red();//DEBUG
 227         Glib::RefPtr<Gdk::Window> win (w.get_window());
 228         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 229         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 230         gint width, height;
 231         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 232         char buf[32];
 233
 234         win->get_size (width, height);
 235
 236         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 237
 238         metric_pixmaps[w.get_name()] = pixmap;
 239
 240         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 241
 242         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 243
 244         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 245
 246                 float fraction = log_meter (db_points[i]);
 247                 gint pos = height - (gint) floor (height * fraction);
 248
 249                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 250
 251                 layout->set_text (buf);
 252
 253                 /* we want logical extents, not ink extents here */
 254
 255                 int width, height;
 256                 layout->get_pixel_size (width, height);
 257
 258                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 259                 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
 260         }
 261
 262         return pixmap;
 263 }
 264
 265 gint
 266 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 267 {
 268         static Glib::RefPtr<Gtk::Style> meter_style;
 269         //cerr << "GainMeter::meter_metrics_expose() called on " << meter_metric_area.get_name();//DEBUG
 270         //cerr << " style_changed = " << style_changed;//DEBUG
 271         if (style_changed) {
 272                 meter_style = meter_metric_area.get_style();
 273         //      cerr << " get_style() called ";//DEBUG
 274         }
 275         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 276         //Glib::RefPtr<Gdk::GC> fg_gc (meter_style->get_fg_gc (Gtk::STATE_NORMAL));
 277         Glib::RefPtr<Gdk::GC> bg_gc (meter_style->get_bg_gc (Gtk::STATE_INSENSITIVE));
 278         GdkRectangle base_rect;
 279         GdkRectangle draw_rect;
 280         gint width, height;
 281
 282         win->get_size (width, height);
 283
 284         base_rect.width = width;
 285         base_rect.height = height;
 286         base_rect.x = 0;
 287         base_rect.y = 0;
 288
 289         Glib::RefPtr<Gdk::Pixmap> pixmap;
 290         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 291
 292         if (i == metric_pixmaps.end() || style_changed || dpi_changed) {
 293                 pixmap = render_metrics (meter_metric_area);
 294         } else {
 295                 pixmap = i->second;
 296         //      cerr << " re-used " << i->first;//DEBUG
 297         }
 298
 299         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 300         //win->draw_rectangle (bg_gc, false, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 301         win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 302         //cerr << endl;//DEBUG
 303         style_changed = false;
 304         return true;
 305 }
 306
 307 void
 308 GainMeter::on_theme_changed()
 309 {
 310         style_changed = true;
 311 }
 312
 313 GainMeter::~GainMeter ()
 314 {
 315         if (meter_menu) {
 316                 delete meter_menu;
 317         }
 318
 319         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
 320                 if ((*i).meter) {
 321                         delete (*i).meter;
 322                 }
 323         }
 324 }
 325
 326 void
 327 GainMeter::update_meters ()
 328 {
 329         vector<MeterInfo>::iterator i;
 330         uint32_t n;
 331         float peak, mpeak;
 332         char buf[32];
 333
 334         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 335                 if ((*i).packed) {
 336                         peak = _io->peak_input_power (n);
 337
 338                         (*i).meter->set (log_meter (peak));
 339
 340                         mpeak = _io->max_peak_power(n);
 341
 342                         if (mpeak > max_peak) {
 343                                 max_peak = mpeak;
 344                                 /* set peak display */
 345                                 if (max_peak <= -200.0f) {
 346                                         peak_display.set_label (_("-inf"));
 347                                 } else {
 348                                         snprintf (buf, sizeof(buf), "%.1f", max_peak);
 349                                         peak_display.set_label (buf);
 350                                 }
 351
 352                                 if (max_peak >= 0.0f) {
 353                                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 354                                 }
 355                         }
 356                 }
 357         }
 358 }
 359
 360 void
 361 GainMeter::parameter_changed(const char* parameter_name)
 362 {
 363 #define PARAM_IS(x) (!strcmp (parameter_name, (x)))
 364
 365         ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::parameter_changed), parameter_name));
 366
 367         if (PARAM_IS ("meter-hold")) {
 368
 369                 vector<MeterInfo>::iterator i;
 370                 uint32_t n;
 371
 372                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 373
 374                         (*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
 375                 }
 376         }
 377
 378 #undef PARAM_IS
 379 }
 380
 381 void
 382 GainMeter::hide_all_meters ()
 383 {
 384         bool remove_metric_area = false;
 385
 386         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 387                 if ((*i).packed) {
 388                         remove_metric_area = true;
 389                         meter_packer.remove (*((*i).meter));
 390                         (*i).packed = false;
 391                 }
 392         }
 393
 394         if (remove_metric_area) {
 395                 if (meter_metric_area.get_parent()) {
 396                         meter_packer.remove (meter_metric_area);
 397                 }
 398         }
 399 }
 400
 401 void
 402 GainMeter::setup_meters (int len)
 403 {
 404         uint32_t nmeters = _io->n_outputs();
 405         guint16 width;
 406
 407         hide_all_meters ();
 408
 409         Route* r;
 410
 411         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 412
 413                 switch (r->meter_point()) {
 414                 case MeterPreFader:
 415                 case MeterInput:
 416                         nmeters = r->n_inputs();
 417                         break;
 418                 case MeterPostFader:
 419                         nmeters = r->n_outputs();
 420                         break;
 421                 }
 422
 423         } else {
 424
 425                 nmeters = _io->n_outputs();
 426
 427         }
 428
 429         if (nmeters == 0) {
 430                 return;
 431         }
 432
 433         if (nmeters <= 2) {
 434                 width = regular_meter_width;
 435         } else {
 436                 width = thin_meter_width;
 437         }
 438
 439         while (meters.size() < nmeters) {
 440                 meters.push_back (MeterInfo());
 441         }
 442
 443         /* pack them backwards */
 444
 445         meter_packer.pack_end (meter_metric_area, false, false);
 446         meter_metric_area.show_all ();
 447
 448         int b = ARDOUR_UI::config()->canvasvar_MeterColorBase.get();
 449         int m = ARDOUR_UI::config()->canvasvar_MeterColorMid.get();
 450         int t = ARDOUR_UI::config()->canvasvar_MeterColorTop.get();
 451         int c = ARDOUR_UI::config()->canvasvar_MeterColorClip.get();
 452
 453         //cerr << "GainMeter::setup_meters() called color_changed = " << color_changed << " colors: " << hex << b << " " << m << " " << t << " " << c << endl;//DEBUG
 454
 455         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 456                 if (meters[n].width != width || meters[n].length != len || color_changed) {
 457                         delete meters[n].meter;
 458                         meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical, len, b, m, t, c);
 459                         //cerr << "GainMeter::setup_meters() w:l = " << width << ":" << len << endl;//DEBUG
 460                         meters[n].width = width;
 461                         meters[n].length = len;
 462                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 463                         meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 464                 }
 465
 466                 meter_packer.pack_end (*meters[n].meter, false, false);
 467                 meters[n].meter->show_all ();
 468                 meters[n].packed = true;
 469         }
 470         color_changed = false;
 471 }
 472
 473 int
 474 GainMeter::get_gm_width ()
 475 {
 476         Gtk::Requisition sz;
 477         hbox.size_request (sz);
 478         return sz.width;
 479 }
 480
 481 bool
 482 GainMeter::gain_key_press (GdkEventKey* ev)
 483 {
 484         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 485                 /* drop through to normal handling */
 486                 return false;
 487         }
 488         /* illegal key for gain entry */
 489         return true;
 490 }
 491
 492 bool
 493 GainMeter::peak_button_release (GdkEventButton* ev)
 494 {
 495         /* reset peak label */
 496
 497         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 498                 ResetAllPeakDisplays ();
 499         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 500                 Route* r;
 501                 if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 502                         ResetGroupPeakDisplays (r->mix_group());
 503                 }
 504         } else {
 505                 reset_peak_display ();
 506         }
 507
 508         return true;
 509 }
 510
 511 void
 512 GainMeter::reset_peak_display ()
 513 {
 514         Route * r;
 515         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 516                 r->reset_max_peak_meters();
 517         }
 518
 519         max_peak = -INFINITY;
 520         peak_display.set_label (_("-Inf"));
 521         peak_display.set_name ("MixerStripPeakDisplay");
 522 }
 523
 524 void
 525 GainMeter::reset_group_peak_display (RouteGroup* group)
 526 {
 527         Route* r;
 528         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 529                 if (group == r->mix_group()) {
 530                         reset_peak_display ();
 531                 }
 532         }
 533 }
 534
 535 gint
 536 GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
 537 {
 538         switch (ev->button) {
 539         case 1:
 540                 meters[which].meter->clear();
 541                 max_peak = minus_infinity();
 542                 peak_display.set_label (_("-inf"));
 543                 peak_display.set_name ("MixerStripPeakDisplay");
 544                 break;
 545
 546         case 3:
 547                 // popup_meter_menu (ev);
 548                 break;
 549         };
 550
 551         return TRUE;
 552 }
 553
 554 void
 555 GainMeter::popup_meter_menu (GdkEventButton *ev)
 556 {
 557         using namespace Menu_Helpers;
 558
 559         if (meter_menu == 0) {
 560                 meter_menu = new Gtk::Menu;
 561                 MenuList& items = meter_menu->items();
 562
 563                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 564                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 565                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 566                 items.push_back (SeparatorElem());
 567                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 568                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 569                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 570         }
 571
 572         meter_menu->popup (1, ev->time);
 573 }
 574
 575 bool
 576 GainMeter::gain_focused (GdkEventFocus* ev)
 577 {
 578         if (ev->in) {
 579                 gain_display.select_region (0, -1);
 580         } else {
 581                 gain_display.select_region (0, 0);
 582         }
 583         return false;
 584 }
 585
 586 void
 587 GainMeter::gain_activated ()
 588 {
 589         float f;
 590
 591         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 592
 593                 /* clamp to displayable values */
 594
 595                 f = min (f, 6.0f);
 596
 597                 _io->set_gain (dB_to_coefficient(f), this);
 598
 599                 if (gain_display.has_focus()) {
 600                         PublicEditor::instance().reset_focus();
 601                 }
 602         }
 603 }
 604
 605 void
 606 GainMeter::show_gain ()
 607 {
 608         char buf[32];
 609
 610         float v = gain_adjustment.get_value();
 611
 612         if (v == 0.0) {
 613                 strcpy (buf, _("-inf"));
 614         } else {
 615                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 616         }
 617
 618         gain_display.set_text (buf);
 619 }
 620
 621 void
 622 GainMeter::gain_adjusted ()
 623 {
 624         if (!ignore_toggle) {
 625                 _io->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 626         }
 627         show_gain ();
 628 }
 629
 630 void
 631 GainMeter::effective_gain_display ()
 632 {
 633         gfloat value = gain_to_slider_position (_io->effective_gain());
 634
 635         if (gain_adjustment.get_value() != value) {
 636                 ignore_toggle = true;
 637                 gain_adjustment.set_value (value);
 638                 ignore_toggle = false;
 639         }
 640 }
 641
 642 void
 643 GainMeter::gain_changed (void *src)
 644 {
 645         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
 646 }
 647
 648 void
 649 GainMeter::set_meter_strip_name (const char * name)
 650 {
 651         meter_metric_area.set_name (name);
 652         style_changed = true;
 653 }
 654
 655 void
 656 GainMeter::set_fader_name (const char * name)
 657 {
 658         gain_slider->set_name (name);
 659 }
 660
 661 void
 662 GainMeter::update_gain_sensitive ()
 663 {
 664         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io->gain_automation_state() & Play));
 665 }
 666
 667
 668 static MeterPoint
 669 next_meter_point (MeterPoint mp)
 670 {
 671         switch (mp) {
 672         case MeterInput:
 673                 return MeterPreFader;
 674                 break;
 675
 676         case MeterPreFader:
 677                 return MeterPostFader;
 678                 break;
 679
 680         case MeterPostFader:
 681                 return MeterInput;
 682                 break;
 683         }
 684         /*NOTREACHED*/
 685         return MeterInput;
 686 }
 687
 688 gint
 689 GainMeter::meter_press(GdkEventButton* ev)
 690 {
 691         Route* _route;
 692
 693         wait_for_release = false;
 694
 695         if ((_route = dynamic_cast<Route*>(_io.get())) == 0) {
 696                 return FALSE;
 697         }
 698
 699         if (!ignore_toggle) {
 700
 701                 if (Keyboard::is_context_menu_event (ev)) {
 702
 703                         // no menu at this time.
 704
 705                 } else {
 706
 707                         if (ev->button == 2) {
 708
 709                                 // Primary-button2 click is the midi binding click
 710                                 // button2-click is "momentary"
 711
 712                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 713                                         wait_for_release = true;
 714                                         old_meter_point = _route->meter_point ();
 715                                 }
 716                         }
 717
 718                         if (ev->button == 1 || ev->button == 2) {
 719
 720                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 721
 722                                         /* Primary+Tertiary-click applies change to all routes */
 723
 724                                         _session.begin_reversible_command (_("meter point change"));
 725                                         Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 726                                         _session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
 727                                         cmd->mark();
 728                                         _session.add_command (cmd);
 729                                         _session.commit_reversible_command ();
 730
 731
 732                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 733
 734                                         /* Primary-click: solo mix group.
 735                                            NOTE: Primary-button2 is MIDI learn.
 736                                         */
 737
 738                                         if (ev->button == 1) {
 739                                                 _session.begin_reversible_command (_("meter point change"));
 740                                                 Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 741                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 742                                                 cmd->mark();
 743                                                 _session.add_command (cmd);
 744                                                 _session.commit_reversible_command ();
 745                                         }
 746
 747                                 } else {
 748
 749                                         /* click: change just this route */
 750
 751                                         // XXX no undo yet
 752
 753                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 754                                 }
 755                         }
 756                 }
 757         }
 758
 759         return true;
 760
 761 }
 762
 763 gint
 764 GainMeter::meter_release(GdkEventButton* ev)
 765 {
 766
 767         if(!ignore_toggle){
 768                 if (wait_for_release){
 769                         wait_for_release = false;
 770                         set_meter_point (*(dynamic_cast<Route*>(_io.get())), old_meter_point);
 771                 }
 772         }
 773         return true;
 774 }
 775
 776 void
 777 GainMeter::set_meter_point (Route& route, MeterPoint mp)
 778 {
 779         route.set_meter_point (mp, this);
 780 }
 781
 782 void
 783 GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
 784 {
 785         RouteGroup* mix_group;
 786
 787         if((mix_group = route.mix_group()) != 0){
 788                 mix_group->apply (&Route::set_meter_point, mp, this);
 789         } else {
 790                 route.set_meter_point (mp, this);
 791         }
 792 }
 793
 794 void
 795 GainMeter::meter_point_clicked ()
 796 {
 797         Route* r;
 798
 799         if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
 800
 801         }
 802 }
 803
 804 gint
 805 GainMeter::start_gain_touch (GdkEventButton* ev)
 806 {
 807         _io->start_gain_touch ();
 808         return FALSE;
 809 }
 810
 811 gint
 812 GainMeter::end_gain_touch (GdkEventButton* ev)
 813 {
 814         _io->end_gain_touch ();
 815         return FALSE;
 816 }
 817
 818 gint
 819 GainMeter::gain_automation_state_button_event (GdkEventButton *ev)
 820 {
 821         if (ev->type == GDK_BUTTON_RELEASE) {
 822                 return TRUE;
 823         }
 824
 825         switch (ev->button) {
 826                 case 1:
 827                         gain_astate_menu.popup (1, ev->time);
 828                         break;
 829                 default:
 830                         break;
 831         }
 832
 833         return TRUE;
 834 }
 835
 836 gint
 837 GainMeter::gain_automation_style_button_event (GdkEventButton *ev)
 838 {
 839         if (ev->type == GDK_BUTTON_RELEASE) {
 840                 return TRUE;
 841         }
 842
 843         switch (ev->button) {
 844         case 1:
 845                 gain_astyle_menu.popup (1, ev->time);
 846                 break;
 847         default:
 848                 break;
 849         }
 850         return TRUE;
 851 }
 852
 853 string
 854 GainMeter::astate_string (AutoState state)
 855 {
 856         return _astate_string (state, false);
 857 }
 858
 859 string
 860 GainMeter::short_astate_string (AutoState state)
 861 {
 862         return _astate_string (state, true);
 863 }
 864
 865 string
 866 GainMeter::_astate_string (AutoState state, bool shrt)
 867 {
 868         string sstr;
 869
 870         switch (state) {
 871         case Off:
 872                 sstr = (shrt ? "M" : _("M"));
 873                 break;
 874         case Play:
 875                 sstr = (shrt ? "P" : _("P"));
 876                 break;
 877         case Touch:
 878                 sstr = (shrt ? "T" : _("T"));
 879                 break;
 880         case Write:
 881                 sstr = (shrt ? "W" : _("W"));
 882                 break;
 883         }
 884
 885         return sstr;
 886 }
 887
 888 string
 889 GainMeter::astyle_string (AutoStyle style)
 890 {
 891         return _astyle_string (style, false);
 892 }
 893
 894 string
 895 GainMeter::short_astyle_string (AutoStyle style)
 896 {
 897         return _astyle_string (style, true);
 898 }
 899
 900 string
 901 GainMeter::_astyle_string (AutoStyle style, bool shrt)
 902 {
 903         if (style & Trim) {
 904                 return _("Trim");
 905         } else {
 906                 /* XXX it might different in different languages */
 907
 908                 return (shrt ? _("Abs") : _("Abs"));
 909         }
 910 }
 911
 912 void
 913 GainMeter::gain_automation_style_changed ()
 914 {
 915   // Route* _route = dynamic_cast<Route*>(&_io);
 916         switch (_width) {
 917         case Wide:
 918                 gain_automation_style_button.set_label (astyle_string(_io->gain_automation_curve().automation_style()));
 919                 break;
 920         case Narrow:
 921                 gain_automation_style_button.set_label  (short_astyle_string(_io->gain_automation_curve().automation_style()));
 922                 break;
 923         }
 924 }
 925
 926 void
 927 GainMeter::gain_automation_state_changed ()
 928 {
 929         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::gain_automation_state_changed));
 930         //Route* _route = dynamic_cast<Route*>(&_io);
 931
 932         bool x;
 933
 934         switch (_width) {
 935         case Wide:
 936                 gain_automation_state_button.set_label (astate_string(_io->gain_automation_curve().automation_state()));
 937                 break;
 938         case Narrow:
 939                 gain_automation_state_button.set_label (short_astate_string(_io->gain_automation_curve().automation_state()));
 940                 break;
 941         }
 942
 943         x = (_io->gain_automation_state() != Off);
 944
 945         if (gain_automation_state_button.get_active() != x) {
 946                 ignore_toggle = true;
 947                 gain_automation_state_button.set_active (x);
 948                 ignore_toggle = false;
 949         }
 950
 951         update_gain_sensitive ();
 952
 953         /* start watching automation so that things move */
 954
 955         gain_watching.disconnect();
 956
 957         if (x) {
 958                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeter::effective_gain_display));
 959         }
 960 }
 961
 962 void GainMeter::clear_meters ()
 963 {
 964         for (vector<MeterInfo>::iterator i = meters.begin(); i < meters.end(); i++) {
 965                 (*i).meter->clear();
 966         }
 967 }
 968
 969 void GainMeter::color_handler(bool dpi)
 970 {
 971         color_changed = true;
 972         dpi_changed = (dpi) ? true : false;
 973         setup_meters();
 974 }