gtk2_ardour/meter_strip.cc

   1 /*
   2     Copyright (C) 2013 Paul Davis
   3     Author: Robin Gareus
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <list>
  21
  22 #include <sigc++/bind.h>
  23
  24 #include "ardour/session.h"
  25 #include "ardour/route.h"
  26 #include "ardour/route_group.h"
  27 #include "ardour/meter.h"
  28
  29 #include "ardour/audio_track.h"
  30 #include "ardour/midi_track.h"
  31
  32 #include <gtkmm2ext/gtk_ui.h>
  33 #include <gtkmm2ext/utils.h>
  34 #include <gtkmm2ext/rgb_macros.h>
  35
  36 #include "ardour_ui.h"
  37 #include "global_signals.h"
  38 #include "logmeter.h"
  39 #include "gui_thread.h"
  40 #include "ardour_window.h"
  41
  42 #include "meterbridge.h"
  43 #include "meter_strip.h"
  44
  45 #include "i18n.h"
  46
  47 using namespace ARDOUR;
  48 using namespace PBD;
  49 using namespace Gtk;
  50 using namespace Gtkmm2ext;
  51 using namespace std;
  52
  53 PBD::Signal1<void,MeterStrip*> MeterStrip::CatchDeletion;
  54
  55 MeterStrip::MetricPatterns MeterStrip::metric_patterns;
  56 MeterStrip::TickPatterns MeterStrip::ticks_patterns;
  57
  58 MeterStrip::MeterStrip (int metricmode)
  59         : AxisView(0)
  60         , RouteUI(0)
  61 {
  62         level_meter = 0;
  63         set_spacing(2);
  64         peakbx.set_size_request(-1, 14);
  65         btnbox.set_size_request(-1, 16);
  66         namebx.set_size_request(14, 52);
  67
  68         _types.clear ();
  69         switch(metricmode) {
  70                 case 1:
  71                         meter_metric_area.set_name ("AudioBusMetrics");
  72                         _types.push_back (DataType::AUDIO);
  73                         break;
  74                 case 2:
  75                         meter_metric_area.set_name ("AudioTrackMetrics");
  76                         _types.push_back (DataType::AUDIO);
  77                         break;
  78                 case 3:
  79                         meter_metric_area.set_name ("MidiTrackMetrics");
  80                         _types.push_back (DataType::MIDI);
  81                         break;
  82                 default:
  83                         meter_metric_area.set_name ("AudioMidiTrackMetrics");
  84                         _types.push_back (DataType::AUDIO);
  85                         _types.push_back (DataType::MIDI);
  86                         break;
  87         }
  88         //meter_metric_area.queue_draw ();
  89
  90         set_size_request_to_display_given_text (meter_metric_area, "-8888", 1, 0);
  91         meter_metric_area.signal_expose_event().connect (
  92                         sigc::mem_fun(*this, &MeterStrip::meter_metrics_expose));
  93
  94         meterbox.pack_start(meter_metric_area, true, false);
  95
  96         pack_start (peakbx, false, false);
  97         pack_start (meterbox, true, true);
  98         pack_start (btnbox, false, false);
  99         pack_start (namebx, false, false);
 100
 101         peakbx.show();
 102         btnbox.show();
 103         meter_metric_area.show();
 104         meterbox.show();
 105         namebx.show();
 106
 107         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &MeterStrip::on_theme_changed));
 108         ColorsChanged.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 109         DPIReset.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 110 }
 111
 112 MeterStrip::MeterStrip (Session* sess, boost::shared_ptr<ARDOUR::Route> rt)
 113         : AxisView(sess)
 114         , RouteUI(sess)
 115         , _route(rt)
 116         , peak_display()
 117 {
 118         set_spacing(2);
 119         RouteUI::set_route (rt);
 120
 121         int meter_width = 6;
 122         if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 123                 meter_width = 12;
 124         }
 125
 126         // level meter + ticks
 127         level_meter = new LevelMeter(sess);
 128         level_meter->set_meter (_route->shared_peak_meter().get());
 129         level_meter->clear_meters();
 130         level_meter->setup_meters (400, meter_width, 6);
 131
 132         Gtk::Alignment *meter_align = Gtk::manage (new Gtk::Alignment());
 133         meter_align->set(0.5, 0.5, 0.0, 1.0);
 134         meter_align->add(*level_meter);
 135
 136         meterbox.pack_start(meter_ticks1_area, true, false);
 137         meterbox.pack_start(*meter_align, true, true);
 138         meterbox.pack_start(meter_ticks2_area, true, false);
 139
 140         // peak display
 141         peak_display.set_name ("meterbridge peakindicator");
 142         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 143         max_peak = minus_infinity();
 144         peak_display.unset_flags (Gtk::CAN_FOCUS);
 145         peak_display.set_size_request(12, 8);
 146         peak_display.set_corner_radius(2);
 147
 148         Gtk::Alignment *peak_align = Gtk::manage (new Gtk::Alignment());
 149         peak_align->set(0.5, 1.0, 1.0, 0.8);
 150         peak_align->add(peak_display);
 151         peakbx.pack_start(*peak_align, true, true, 3);
 152         peakbx.set_size_request(-1, 14);
 153
 154         // add track-name label
 155         name_label.set_text(_route->name().c_str());
 156         name_label.set_corner_radius(2);
 157         name_label.set_name("solo isolate"); // XXX re-use 'very_small_text'
 158         name_label.set_angle(-90.0);
 159         name_label.layout()->set_ellipsize (Pango::ELLIPSIZE_END);
 160         name_label.layout()->set_width(48 * PANGO_SCALE);
 161         name_label.set_size_request(14, 50);
 162
 163         namebx.set_size_request(14, 52);
 164         namebx.pack_start(name_label, true, false, 3);
 165
 166         // rec-enable button
 167         btnbox.pack_start(*rec_enable_button, true, false);
 168         rec_enable_button->set_corner_radius(2);
 169         btnbox.set_size_request(-1, 16);
 170
 171         pack_start (peakbx, false, false);
 172         pack_start (meterbox, true, true);
 173         pack_start (btnbox, false, false);
 174         pack_start (namebx, false, false);
 175
 176         peak_display.show();
 177         peakbx.show();
 178         meter_ticks1_area.show();
 179         meter_ticks2_area.show();
 180         meterbox.show();
 181         level_meter->show();
 182         meter_align->show();
 183         peak_align->show();
 184         btnbox.show();
 185         name_label.show();
 186         namebx.show();
 187
 188         _route->shared_peak_meter()->ConfigurationChanged.connect (
 189                         route_connections, invalidator (*this), boost::bind (&MeterStrip::meter_configuration_changed, this, _1), gui_context()
 190                         );
 191         meter_configuration_changed (_route->shared_peak_meter()->input_streams ());
 192
 193         meter_ticks1_area.set_size_request(3,-1);
 194         meter_ticks2_area.set_size_request(3,-1);
 195         meter_ticks1_area.signal_expose_event().connect (sigc::mem_fun(*this, &MeterStrip::meter_ticks1_expose));
 196         meter_ticks2_area.signal_expose_event().connect (sigc::mem_fun(*this, &MeterStrip::meter_ticks2_expose));
 197
 198         _route->DropReferences.connect (route_connections, invalidator (*this), boost::bind (&MeterStrip::self_delete, this), gui_context());
 199         _route->PropertyChanged.connect (route_connections, invalidator (*this), boost::bind (&MeterStrip::strip_property_changed, this, _1), gui_context());
 200
 201         peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &MeterStrip::peak_button_release), false);
 202
 203         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &MeterStrip::on_theme_changed));
 204         ColorsChanged.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 205         DPIReset.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 206 }
 207
 208 MeterStrip::~MeterStrip ()
 209 {
 210         delete level_meter;
 211         CatchDeletion (this);
 212 }
 213
 214 void
 215 MeterStrip::self_delete ()
 216 {
 217         delete this;
 218 }
 219
 220 void
 221 MeterStrip::update_rec_display ()
 222 {
 223         RouteUI::update_rec_display ();
 224 }
 225
 226 std::string
 227 MeterStrip::state_id() const
 228 {
 229         return string_compose ("mtrs %1", _route->id().to_s());
 230 }
 231
 232 void
 233 MeterStrip::set_button_names()
 234 {
 235         rec_enable_button->set_text (_("R"));
 236 }
 237
 238 void
 239 MeterStrip::strip_property_changed (const PropertyChange& what_changed)
 240 {
 241         if (!what_changed.contains (ARDOUR::Properties::name)) {
 242                 return;
 243         }
 244         ENSURE_GUI_THREAD (*this, &MeterStrip::strip_name_changed, what_changed)
 245         name_label.set_text(_route->name());
 246 }
 247
 248 void
 249 MeterStrip::fast_update ()
 250 {
 251         float mpeak = level_meter->update_meters();
 252         if (mpeak > max_peak) {
 253                 max_peak = mpeak;
 254                 if (mpeak >= 0.0f) {
 255                         peak_display.set_name ("meterbridge peakindicator on");
 256                         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 257                 }
 258         }
 259 }
 260
 261 void
 262 MeterStrip::on_theme_changed()
 263 {
 264         metric_patterns.clear();
 265         ticks_patterns.clear();
 266
 267         if (level_meter && _route) {
 268                 int meter_width = 6;
 269                 if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 270                         meter_width = 12;
 271                 }
 272                 level_meter->setup_meters (400, meter_width, 6);
 273         }
 274         meter_metric_area.queue_draw();
 275         meter_ticks1_area.queue_draw();
 276         meter_ticks2_area.queue_draw();
 277 }
 278
 279 void
 280 MeterStrip::meter_configuration_changed (ChanCount c)
 281 {
 282         int type = 0;
 283         _types.clear ();
 284
 285         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 286                 if (c.get (*i) > 0) {
 287                         _types.push_back (*i);
 288                         type |= 1 << (*i);
 289                 }
 290         }
 291
 292         // TODO draw Inactive routes or busses with different styles
 293         if (boost::dynamic_pointer_cast<AudioTrack>(_route) == 0
 294                         && boost::dynamic_pointer_cast<MidiTrack>(_route) == 0
 295                         ) {
 296                 meter_ticks1_area.set_name ("AudioBusMetrics");
 297                 meter_ticks2_area.set_name ("AudioBusMetrics");
 298         }
 299         else if (type == (1 << DataType::AUDIO)) {
 300                 meter_ticks1_area.set_name ("AudioTrackMetrics");
 301                 meter_ticks2_area.set_name ("AudioTrackMetrics");
 302         }
 303         else if (type == (1 << DataType::MIDI)) {
 304                 meter_ticks1_area.set_name ("MidiTrackMetrics");
 305                 meter_ticks2_area.set_name ("MidiTrackMetrics");
 306         } else {
 307                 meter_ticks1_area.set_name ("AudioMidiTrackMetrics");
 308                 meter_ticks2_area.set_name ("AudioMidiTrackMetrics");
 309         }
 310
 311         on_theme_changed();
 312 }
 313
 314 void
 315 MeterStrip::on_size_request (Gtk::Requisition* r)
 316 {
 317         metric_patterns.clear();
 318         ticks_patterns.clear();
 319         VBox::on_size_request(r);
 320 }
 321
 322 void
 323 MeterStrip::on_size_allocate (Gtk::Allocation& a)
 324 {
 325         metric_patterns.clear();
 326         ticks_patterns.clear();
 327         VBox::on_size_allocate(a);
 328 }
 329
 330 /* XXX code-copy from gain_meter.cc -- TODO consolidate
 331  *
 332  * slightly different:
 333  *  - ticks & label positions are swapped
 334  *  - more ticks for audio (longer meter by default)
 335  *  - right-aligned lables, unit-legend
 336  *  - height limitation of FastMeter::max_pattern_metric_size is included here
 337  */
 338 cairo_pattern_t*
 339 MeterStrip::render_metrics (Gtk::Widget& w, vector<DataType> types)
 340 {
 341         Glib::RefPtr<Gdk::Window> win (w.get_window());
 342
 343         gint width, height;
 344         win->get_size (width, height);
 345
 346         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 347         cairo_t* cr = cairo_create (surface);
 348         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 349
 350
 351         Pango::AttrList audio_font_attributes;
 352         Pango::AttrList midi_font_attributes;
 353         Pango::AttrList unit_font_attributes;
 354
 355         Pango::AttrFontDesc* font_attr;
 356         Pango::FontDescription font;
 357
 358         font = Pango::FontDescription (""); // use defaults
 359         //font = get_font_for_style("gain-fader");
 360         //font = w.get_style()->get_font();
 361
 362         font.set_weight (Pango::WEIGHT_NORMAL);
 363         font.set_size (9.0 * PANGO_SCALE);
 364         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 365         audio_font_attributes.change (*font_attr);
 366         delete font_attr;
 367
 368         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 369         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 370         font.set_size (7.5 * PANGO_SCALE);
 371         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 372         midi_font_attributes.change (*font_attr);
 373         delete font_attr;
 374
 375         font.set_size (7.0 * PANGO_SCALE);
 376         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 377         unit_font_attributes.change (*font_attr);
 378         delete font_attr;
 379
 380         cairo_move_to (cr, 0, 0);
 381         cairo_rectangle (cr, 0, 0, width, height);
 382         {
 383                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 384                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 385         }
 386         cairo_fill (cr);
 387
 388         height = min(1024, height); // XXX see FastMeter::max_pattern_metric_size
 389         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 390
 391         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 392
 393                 Gdk::Color c;
 394
 395                 if (types.size() > 1) {
 396                         /* we're overlaying more than 1 set of marks, so use different colours */
 397                         Gdk::Color c;
 398                         switch (*i) {
 399                         case DataType::AUDIO:
 400                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 401                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 402                                 break;
 403                         case DataType::MIDI:
 404                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 405                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 406                                 break;
 407                         }
 408                 } else {
 409                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 410                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 411                 }
 412
 413                 std::map<int,float> points;
 414
 415                 switch (*i) {
 416                 case DataType::AUDIO:
 417                         layout->set_attributes (audio_font_attributes);
 418                         points.insert (std::pair<int,float>(-50, 0.5));
 419                         points.insert (std::pair<int,float>(-40, 0.5));
 420                         points.insert (std::pair<int,float>(-30, 0.5));
 421                         points.insert (std::pair<int,float>(-25, 0.5));
 422                         points.insert (std::pair<int,float>(-20, 1.0));
 423                         points.insert (std::pair<int,float>(-18, 1.0));
 424                         points.insert (std::pair<int,float>(-15, 1.0));
 425                         points.insert (std::pair<int,float>(-10, 1.0));
 426                         points.insert (std::pair<int,float>( -5, 1.0));
 427                         points.insert (std::pair<int,float>( -3, 0.5));
 428                         points.insert (std::pair<int,float>(  0, 1.0));
 429                         points.insert (std::pair<int,float>(  3, 0.5));
 430                         break;
 431
 432                 case DataType::MIDI:
 433                         layout->set_attributes (midi_font_attributes);
 434                         points.insert (std::pair<int,float>(  0, 1.0));
 435                         if (types.size() == 1) {
 436                                 points.insert (std::pair<int,float>( 16, 0.5));
 437                                 points.insert (std::pair<int,float>( 32, 0.5));
 438                                 points.insert (std::pair<int,float>( 48, 0.5));
 439                                 points.insert (std::pair<int,float>( 64, 1.0));
 440                                 points.insert (std::pair<int,float>( 80, 0.5));
 441                                 points.insert (std::pair<int,float>( 96, 0.5));
 442                                 points.insert (std::pair<int,float>(100, 0.5));
 443                                 points.insert (std::pair<int,float>(112, 0.5));
 444                         } else {
 445                                 /* labels that don't overlay with dB */
 446                                 points.insert (std::pair<int,float>( 48, 0.5));
 447                                 points.insert (std::pair<int,float>( 72, 0.5));
 448                                 points.insert (std::pair<int,float>( 88, 0.5));
 449                         }
 450                         points.insert (std::pair<int,float>(127, 1.0));
 451                         break;
 452                 }
 453
 454                 char buf[32];
 455                 gint pos;
 456
 457                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 458
 459                         float fraction = 0;
 460                         switch (*i) {
 461                         case DataType::AUDIO:
 462                                 cairo_set_line_width (cr, (j->second));
 463                                 if (j->first >= 0) {
 464                                         cairo_set_source_rgb (cr,
 465                                                         UINT_RGBA_R_FLT(peakcolor),
 466                                                         UINT_RGBA_G_FLT(peakcolor),
 467                                                         UINT_RGBA_B_FLT(peakcolor));
 468                                 }
 469                                 fraction = log_meter (j->first);
 470                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 471                                 pos = height - (gint) floor (height * fraction);
 472                                 cairo_move_to(cr, width-2.5, pos + .5);
 473                                 cairo_line_to(cr, width, pos + .5);
 474                                 cairo_stroke (cr);
 475                                 break;
 476                         case DataType::MIDI:
 477                                 cairo_set_line_width (cr, 1.0);
 478                                 fraction = (j->first) / 127.0;
 479                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 480                                 pos = height - (gint) rintf (height * fraction);
 481                                 cairo_arc(cr, 3, pos, 1.0, 0, 2 * M_PI);
 482                                 cairo_fill(cr);
 483                                 break;
 484                         }
 485
 486                         layout->set_text(buf);
 487
 488                         /* we want logical extents, not ink extents here */
 489
 490                         int tw, th;
 491                         layout->get_pixel_size(tw, th);
 492
 493                         int p = pos - (th / 2);
 494                         p = min (p, height - th);
 495                         p = max (p, 0);
 496
 497                         cairo_move_to (cr, width-4-tw, p);
 498                         pango_cairo_show_layout (cr, layout->gobj());
 499                 }
 500         }
 501
 502         if (types.size() == 1) {
 503                 int tw, th;
 504                 layout->set_attributes (unit_font_attributes);
 505                 switch (types.at(0)) {
 506                         case DataType::AUDIO:
 507                                 layout->set_text("dBFS");
 508                                 layout->get_pixel_size(tw, th);
 509                                 break;
 510                         case DataType::MIDI:
 511                                 layout->set_text("vel");
 512                                 layout->get_pixel_size(tw, th);
 513                                 break;
 514                 }
 515                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 516                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 517                 cairo_move_to (cr, 1, height - th - 1.5);
 518                 pango_cairo_show_layout (cr, layout->gobj());
 519         }
 520
 521         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 522         MetricPatterns::iterator p;
 523
 524         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
 525                 cairo_pattern_destroy (p->second);
 526         }
 527
 528         metric_patterns[w.get_name()] = pattern;
 529
 530         cairo_destroy (cr);
 531         cairo_surface_destroy (surface);
 532
 533         return pattern;
 534 }
 535
 536 /* XXX code-copy from gain_meter.cc -- TODO consolidate */
 537 gint
 538 MeterStrip::meter_metrics_expose (GdkEventExpose *ev)
 539 {
 540         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 541         cairo_t* cr;
 542
 543         cr = gdk_cairo_create (win->gobj());
 544
 545         /* clip to expose area */
 546
 547         gdk_cairo_rectangle (cr, &ev->area);
 548         cairo_clip (cr);
 549
 550         cairo_pattern_t* pattern;
 551         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
 552
 553         if (i == metric_patterns.end()) {
 554                 pattern = render_metrics (meter_metric_area, _types);
 555         } else {
 556                 pattern = i->second;
 557         }
 558
 559         cairo_move_to (cr, 0, 0);
 560         cairo_set_source (cr, pattern);
 561
 562         gint width, height;
 563         win->get_size (width, height);
 564
 565         cairo_rectangle (cr, 0, 0, width, height);
 566         cairo_fill (cr);
 567
 568         cairo_destroy (cr);
 569
 570         return true;
 571 }
 572
 573 cairo_pattern_t*
 574 MeterStrip::render_ticks (Gtk::Widget& w, vector<DataType> types)
 575 {
 576         Glib::RefPtr<Gdk::Window> win (w.get_window());
 577
 578         gint width, height;
 579         win->get_size (width, height);
 580
 581         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 582         cairo_t* cr = cairo_create (surface);
 583
 584         cairo_move_to (cr, 0, 0);
 585         cairo_rectangle (cr, 0, 0, width, height);
 586         {
 587                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 588                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 589         }
 590         cairo_fill (cr);
 591
 592         height = min(1024, height); // XXX see FastMeter::max_pattern_metric_size
 593         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 594
 595         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 596
 597                 Gdk::Color c;
 598
 599                 if (types.size() > 1) {
 600                         /* we're overlaying more than 1 set of marks, so use different colours */
 601                         Gdk::Color c;
 602                         switch (*i) {
 603                         case DataType::AUDIO:
 604                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 605                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 606                                 break;
 607                         case DataType::MIDI:
 608                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 609                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 610                                 break;
 611                         }
 612                 } else {
 613                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 614                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 615                 }
 616
 617                 std::map<int,float> points;
 618
 619                 switch (*i) {
 620                 case DataType::AUDIO:
 621                         points.insert (std::pair<int,float>(-60, 0.5));
 622                         points.insert (std::pair<int,float>(-50, 0.5));
 623                         points.insert (std::pair<int,float>(-40, 0.5));
 624                         points.insert (std::pair<int,float>(-30, 0.5));
 625                         points.insert (std::pair<int,float>(-25, 0.5));
 626                         points.insert (std::pair<int,float>(-20, 1.0));
 627
 628                         points.insert (std::pair<int,float>(-19, 0.5));
 629                         points.insert (std::pair<int,float>(-18, 1.0));
 630                         points.insert (std::pair<int,float>(-17, 0.5));
 631                         points.insert (std::pair<int,float>(-16, 0.5));
 632                         points.insert (std::pair<int,float>(-15, 1.0));
 633
 634                         points.insert (std::pair<int,float>(-14, 0.5));
 635                         points.insert (std::pair<int,float>(-13, 0.5));
 636                         points.insert (std::pair<int,float>(-12, 0.5));
 637                         points.insert (std::pair<int,float>(-11, 0.5));
 638                         points.insert (std::pair<int,float>(-10, 1.0));
 639
 640                         points.insert (std::pair<int,float>( -9, 0.5));
 641                         points.insert (std::pair<int,float>( -8, 0.5));
 642                         points.insert (std::pair<int,float>( -7, 0.5));
 643                         points.insert (std::pair<int,float>( -6, 0.5));
 644                         points.insert (std::pair<int,float>( -5, 1.0));
 645                         points.insert (std::pair<int,float>( -4, 0.5));
 646                         points.insert (std::pair<int,float>( -3, 0.5));
 647                         points.insert (std::pair<int,float>( -2, 0.5));
 648                         points.insert (std::pair<int,float>( -1, 0.5));
 649
 650                         points.insert (std::pair<int,float>(  0, 1.0));
 651                         points.insert (std::pair<int,float>(  1, 0.5));
 652                         points.insert (std::pair<int,float>(  2, 0.5));
 653                         points.insert (std::pair<int,float>(  3, 0.5));
 654                         points.insert (std::pair<int,float>(  4, 0.5));
 655                         points.insert (std::pair<int,float>(  5, 0.5));
 656                         break;
 657
 658                 case DataType::MIDI:
 659                         points.insert (std::pair<int,float>(  0, 1.0));
 660                         points.insert (std::pair<int,float>( 16, 0.5));
 661                         points.insert (std::pair<int,float>( 32, 0.5));
 662                         points.insert (std::pair<int,float>( 48, 0.5));
 663                         points.insert (std::pair<int,float>( 64, 1.0));
 664                         points.insert (std::pair<int,float>( 80, 0.5));
 665                         points.insert (std::pair<int,float>( 96, 0.5));
 666                         points.insert (std::pair<int,float>(100, 1.0));
 667                         points.insert (std::pair<int,float>(112, 0.5));
 668                         points.insert (std::pair<int,float>(127, 1.0));
 669                         break;
 670                 }
 671
 672                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 673                         cairo_set_line_width (cr, (j->second));
 674
 675                         float fraction = 0;
 676                         gint pos;
 677
 678                         switch (*i) {
 679                         case DataType::AUDIO:
 680                                 if (j->first >= 0) {
 681                                         cairo_set_source_rgb (cr,
 682                                                         UINT_RGBA_R_FLT(peakcolor),
 683                                                         UINT_RGBA_G_FLT(peakcolor),
 684                                                         UINT_RGBA_B_FLT(peakcolor));
 685                                 }
 686                                 fraction = log_meter (j->first);
 687                                 pos = height - (gint) floor (height * fraction);
 688                                 cairo_move_to(cr, 0, pos + .5);
 689                                 cairo_line_to(cr, 3, pos + .5);
 690                                 cairo_stroke (cr);
 691                                 break;
 692                         case DataType::MIDI:
 693                                 fraction = (j->first) / 127.0;
 694                                 pos = height - (gint) floor (height * fraction);
 695                                 cairo_arc(cr, 1.5, pos, 1.0, 0, 2 * M_PI);
 696                                 cairo_fill(cr);
 697                                 break;
 698                         }
 699                 }
 700         }
 701
 702         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 703         TickPatterns::iterator p;
 704
 705         if ((p = ticks_patterns.find (w.get_name())) != metric_patterns.end()) {
 706                 cairo_pattern_destroy (p->second);
 707         }
 708
 709         ticks_patterns[w.get_name()] = pattern;
 710
 711         cairo_destroy (cr);
 712         cairo_surface_destroy (surface);
 713
 714         return pattern;
 715 }
 716
 717 gint
 718 MeterStrip::meter_ticks1_expose (GdkEventExpose *ev)
 719 {
 720         return meter_ticks_expose(ev, &meter_ticks1_area);
 721 }
 722
 723 gint
 724 MeterStrip::meter_ticks2_expose (GdkEventExpose *ev)
 725 {
 726         return meter_ticks_expose(ev, &meter_ticks2_area);
 727 }
 728
 729 gint
 730 MeterStrip::meter_ticks_expose (GdkEventExpose *ev, Gtk::DrawingArea *mta)
 731 {
 732         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 733         cairo_t* cr;
 734
 735         cr = gdk_cairo_create (win->gobj());
 736
 737         /* clip to expose area */
 738
 739         gdk_cairo_rectangle (cr, &ev->area);
 740         cairo_clip (cr);
 741
 742         cairo_pattern_t* pattern;
 743         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 744
 745         if (i == ticks_patterns.end()) {
 746                 pattern = render_ticks (*mta, _types);
 747         } else {
 748                 pattern = i->second;
 749         }
 750
 751         cairo_move_to (cr, 0, 0);
 752         cairo_set_source (cr, pattern);
 753
 754         gint width, height;
 755         win->get_size (width, height);
 756
 757         cairo_rectangle (cr, 0, 0, width, height);
 758         cairo_fill (cr);
 759
 760         cairo_destroy (cr);
 761
 762         return true;
 763 }
 764
 765 void
 766 MeterStrip::reset_group_peak_display (RouteGroup* group)
 767 {
 768         /* UNUSED -- need connection w/mixer || other meters */
 769         if (_route && group == _route->route_group()) {
 770                 reset_peak_display ();
 771         }
 772 }
 773
 774 void
 775 MeterStrip::reset_peak_display ()
 776 {
 777         _route->shared_peak_meter()->reset_max();
 778         level_meter->clear_meters();
 779         max_peak = -INFINITY;
 780         peak_display.set_name ("meterbridge peakindicator");
 781         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 782 }
 783
 784 bool
 785 MeterStrip::peak_button_release (GdkEventButton* ev)
 786 {
 787         reset_peak_display ();
 788         return true;
 789 }