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