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::display_metrics (bool show)
 260 {
 261 #if 0
 262         if (show) {
 263                 meter_metric_area.show();
 264         } else {
 265                 meter_metric_area.hide();
 266         }
 267 #endif
 268 }
 269
 270 void
 271 MeterStrip::on_theme_changed()
 272 {
 273         metric_patterns.clear();
 274         ticks_patterns.clear();
 275
 276         if (level_meter && _route) {
 277                 int meter_width = 6;
 278                 if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 279                         meter_width = 12;
 280                 }
 281                 level_meter->setup_meters (400, meter_width, 6);
 282         }
 283         meter_metric_area.queue_draw();
 284         meter_ticks1_area.queue_draw();
 285         meter_ticks2_area.queue_draw();
 286 }
 287
 288 void
 289 MeterStrip::meter_configuration_changed (ChanCount c)
 290 {
 291         int type = 0;
 292         _types.clear ();
 293
 294         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 295                 if (c.get (*i) > 0) {
 296                         _types.push_back (*i);
 297                         type |= 1 << (*i);
 298                 }
 299         }
 300
 301         // TODO draw Inactive routes or busses with different styles
 302         if (boost::dynamic_pointer_cast<AudioTrack>(_route) == 0
 303                         && boost::dynamic_pointer_cast<MidiTrack>(_route) == 0
 304                         ) {
 305                 meter_ticks1_area.set_name ("AudioBusMetrics");
 306                 meter_ticks2_area.set_name ("AudioBusMetrics");
 307         }
 308         else if (type == (1 << DataType::AUDIO)) {
 309                 meter_ticks1_area.set_name ("AudioTrackMetrics");
 310                 meter_ticks2_area.set_name ("AudioTrackMetrics");
 311         }
 312         else if (type == (1 << DataType::MIDI)) {
 313                 meter_ticks1_area.set_name ("MidiTrackMetrics");
 314                 meter_ticks2_area.set_name ("MidiTrackMetrics");
 315         } else {
 316                 meter_ticks1_area.set_name ("AudioMidiTrackMetrics");
 317                 meter_ticks2_area.set_name ("AudioMidiTrackMetrics");
 318         }
 319
 320         on_theme_changed();
 321 }
 322
 323 void
 324 MeterStrip::on_size_request (Gtk::Requisition* r)
 325 {
 326         metric_patterns.clear();
 327         ticks_patterns.clear();
 328         VBox::on_size_request(r);
 329 }
 330
 331 void
 332 MeterStrip::on_size_allocate (Gtk::Allocation& a)
 333 {
 334         metric_patterns.clear();
 335         ticks_patterns.clear();
 336         VBox::on_size_allocate(a);
 337 }
 338
 339 /* XXX code-copy from gain_meter.cc -- TODO consolidate
 340  *
 341  * slightly different:
 342  *  - ticks & label positions are swapped
 343  *  - more ticks for audio (longer meter by default)
 344  *  - right-aligned lables, unit-legend
 345  *  - height limitation of FastMeter::max_pattern_metric_size is included here
 346  */
 347 cairo_pattern_t*
 348 MeterStrip::render_metrics (Gtk::Widget& w, vector<DataType> types)
 349 {
 350         Glib::RefPtr<Gdk::Window> win (w.get_window());
 351
 352         gint width, height;
 353         win->get_size (width, height);
 354
 355         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 356         cairo_t* cr = cairo_create (surface);
 357         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 358
 359
 360         Pango::AttrList audio_font_attributes;
 361         Pango::AttrList midi_font_attributes;
 362         Pango::AttrList unit_font_attributes;
 363
 364         Pango::AttrFontDesc* font_attr;
 365         Pango::FontDescription font;
 366
 367         font = Pango::FontDescription (""); // use defaults
 368         //font = get_font_for_style("gain-fader");
 369         //font = w.get_style()->get_font();
 370
 371         font.set_weight (Pango::WEIGHT_NORMAL);
 372         font.set_size (9.0 * PANGO_SCALE);
 373         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 374         audio_font_attributes.change (*font_attr);
 375         delete font_attr;
 376
 377         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 378         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 379         font.set_size (7.5 * PANGO_SCALE);
 380         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 381         midi_font_attributes.change (*font_attr);
 382         delete font_attr;
 383
 384         font.set_size (7.0 * PANGO_SCALE);
 385         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 386         unit_font_attributes.change (*font_attr);
 387         delete font_attr;
 388
 389         cairo_move_to (cr, 0, 0);
 390         cairo_rectangle (cr, 0, 0, width, height);
 391         {
 392                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 393                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 394         }
 395         cairo_fill (cr);
 396
 397         height = min(1024, height); // XXX see FastMeter::max_pattern_metric_size
 398         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peakindicator on: fill start");
 399
 400         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 401
 402                 Gdk::Color c;
 403
 404                 if (types.size() > 1) {
 405                         /* we're overlaying more than 1 set of marks, so use different colours */
 406                         Gdk::Color c;
 407                         switch (*i) {
 408                         case DataType::AUDIO:
 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                                 break;
 412                         case DataType::MIDI:
 413                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 414                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 415                                 break;
 416                         }
 417                 } else {
 418                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 419                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 420                 }
 421
 422                 std::map<int,float> points;
 423
 424                 switch (*i) {
 425                 case DataType::AUDIO:
 426                         layout->set_attributes (audio_font_attributes);
 427                         points.insert (std::pair<int,float>(-50, 0.5));
 428                         points.insert (std::pair<int,float>(-40, 0.5));
 429                         points.insert (std::pair<int,float>(-30, 0.5));
 430                         points.insert (std::pair<int,float>(-25, 0.5));
 431                         points.insert (std::pair<int,float>(-20, 1.0));
 432                         points.insert (std::pair<int,float>(-18, 1.0));
 433                         points.insert (std::pair<int,float>(-15, 1.0));
 434                         points.insert (std::pair<int,float>(-10, 1.0));
 435                         points.insert (std::pair<int,float>( -5, 1.0));
 436                         points.insert (std::pair<int,float>( -3, 0.5));
 437                         points.insert (std::pair<int,float>(  0, 1.0));
 438                         points.insert (std::pair<int,float>(  3, 0.5));
 439                         break;
 440
 441                 case DataType::MIDI:
 442                         layout->set_attributes (midi_font_attributes);
 443                         points.insert (std::pair<int,float>(  0, 1.0));
 444                         if (types.size() == 1) {
 445                                 points.insert (std::pair<int,float>( 16, 0.5));
 446                                 points.insert (std::pair<int,float>( 32, 0.5));
 447                                 points.insert (std::pair<int,float>( 48, 0.5));
 448                                 points.insert (std::pair<int,float>( 64, 1.0));
 449                                 points.insert (std::pair<int,float>( 80, 0.5));
 450                                 points.insert (std::pair<int,float>( 96, 0.5));
 451                                 points.insert (std::pair<int,float>(100, 0.5));
 452                                 points.insert (std::pair<int,float>(112, 0.5));
 453                         } else {
 454                                 /* labels that don't overlay with dB */
 455                                 points.insert (std::pair<int,float>( 48, 0.5));
 456                                 points.insert (std::pair<int,float>( 72, 0.5));
 457                                 points.insert (std::pair<int,float>( 88, 0.5));
 458                         }
 459                         points.insert (std::pair<int,float>(127, 1.0));
 460                         break;
 461                 }
 462
 463                 char buf[32];
 464                 gint pos;
 465
 466                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 467
 468                         float fraction = 0;
 469                         switch (*i) {
 470                         case DataType::AUDIO:
 471                                 cairo_set_line_width (cr, (j->second));
 472                                 if (j->first >= 0) {
 473                                         cairo_set_source_rgb (cr,
 474                                                         UINT_RGBA_R_FLT(peakcolor),
 475                                                         UINT_RGBA_G_FLT(peakcolor),
 476                                                         UINT_RGBA_B_FLT(peakcolor));
 477                                 }
 478                                 fraction = log_meter (j->first);
 479                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 480                                 pos = height - (gint) floor (height * fraction);
 481                                 cairo_move_to(cr, width-2.5, pos + .5);
 482                                 cairo_line_to(cr, width, pos + .5);
 483                                 cairo_stroke (cr);
 484                                 break;
 485                         case DataType::MIDI:
 486                                 cairo_set_line_width (cr, 1.0);
 487                                 fraction = (j->first) / 127.0;
 488                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 489                                 pos = height - (gint) rintf (height * fraction);
 490                                 cairo_arc(cr, 3, pos, 1.0, 0, 2 * M_PI);
 491                                 cairo_fill(cr);
 492                                 break;
 493                         }
 494
 495                         layout->set_text(buf);
 496
 497                         /* we want logical extents, not ink extents here */
 498
 499                         int tw, th;
 500                         layout->get_pixel_size(tw, th);
 501
 502                         int p = pos - (th / 2);
 503                         p = min (p, height - th);
 504                         p = max (p, 0);
 505
 506                         cairo_move_to (cr, width-4-tw, p);
 507                         pango_cairo_show_layout (cr, layout->gobj());
 508                 }
 509         }
 510
 511         if (types.size() == 1) {
 512                 int tw, th;
 513                 layout->set_attributes (unit_font_attributes);
 514                 switch (types.at(0)) {
 515                         case DataType::AUDIO:
 516                                 layout->set_text("dBFS");
 517                                 layout->get_pixel_size(tw, th);
 518                                 break;
 519                         case DataType::MIDI:
 520                                 layout->set_text("vel");
 521                                 layout->get_pixel_size(tw, th);
 522                                 break;
 523                 }
 524                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 525                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 526                 cairo_move_to (cr, 1, height - th - 1.5);
 527                 pango_cairo_show_layout (cr, layout->gobj());
 528         }
 529
 530         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 531         MetricPatterns::iterator p;
 532
 533         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
 534                 cairo_pattern_destroy (p->second);
 535         }
 536
 537         metric_patterns[w.get_name()] = pattern;
 538
 539         cairo_destroy (cr);
 540         cairo_surface_destroy (surface);
 541
 542         return pattern;
 543 }
 544
 545 /* XXX code-copy from gain_meter.cc -- TODO consolidate */
 546 gint
 547 MeterStrip::meter_metrics_expose (GdkEventExpose *ev)
 548 {
 549         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 550         cairo_t* cr;
 551
 552         cr = gdk_cairo_create (win->gobj());
 553
 554         /* clip to expose area */
 555
 556         gdk_cairo_rectangle (cr, &ev->area);
 557         cairo_clip (cr);
 558
 559         cairo_pattern_t* pattern;
 560         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
 561
 562         if (i == metric_patterns.end()) {
 563                 pattern = render_metrics (meter_metric_area, _types);
 564         } else {
 565                 pattern = i->second;
 566         }
 567
 568         cairo_move_to (cr, 0, 0);
 569         cairo_set_source (cr, pattern);
 570
 571         gint width, height;
 572         win->get_size (width, height);
 573
 574         cairo_rectangle (cr, 0, 0, width, height);
 575         cairo_fill (cr);
 576
 577         cairo_destroy (cr);
 578
 579         return true;
 580 }
 581
 582 cairo_pattern_t*
 583 MeterStrip::render_ticks (Gtk::Widget& w, vector<DataType> types)
 584 {
 585         Glib::RefPtr<Gdk::Window> win (w.get_window());
 586
 587         gint width, height;
 588         win->get_size (width, height);
 589
 590         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 591         cairo_t* cr = cairo_create (surface);
 592
 593         cairo_move_to (cr, 0, 0);
 594         cairo_rectangle (cr, 0, 0, width, height);
 595         {
 596                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 597                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 598         }
 599         cairo_fill (cr);
 600
 601         height = min(1024, height); // XXX see FastMeter::max_pattern_metric_size
 602         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peakindicator on: fill start");
 603
 604         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 605
 606                 Gdk::Color c;
 607
 608                 if (types.size() > 1) {
 609                         /* we're overlaying more than 1 set of marks, so use different colours */
 610                         Gdk::Color c;
 611                         switch (*i) {
 612                         case DataType::AUDIO:
 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                                 break;
 616                         case DataType::MIDI:
 617                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 618                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 619                                 break;
 620                         }
 621                 } else {
 622                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 623                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 624                 }
 625
 626                 std::map<int,float> points;
 627
 628                 switch (*i) {
 629                 case DataType::AUDIO:
 630                         points.insert (std::pair<int,float>(-60, 0.5));
 631                         points.insert (std::pair<int,float>(-50, 0.5));
 632                         points.insert (std::pair<int,float>(-40, 0.5));
 633                         points.insert (std::pair<int,float>(-30, 0.5));
 634                         points.insert (std::pair<int,float>(-25, 0.5));
 635                         points.insert (std::pair<int,float>(-20, 1.0));
 636
 637                         points.insert (std::pair<int,float>(-19, 0.5));
 638                         points.insert (std::pair<int,float>(-18, 1.0));
 639                         points.insert (std::pair<int,float>(-17, 0.5));
 640                         points.insert (std::pair<int,float>(-16, 0.5));
 641                         points.insert (std::pair<int,float>(-15, 1.0));
 642
 643                         points.insert (std::pair<int,float>(-14, 0.5));
 644                         points.insert (std::pair<int,float>(-13, 0.5));
 645                         points.insert (std::pair<int,float>(-12, 0.5));
 646                         points.insert (std::pair<int,float>(-11, 0.5));
 647                         points.insert (std::pair<int,float>(-10, 1.0));
 648
 649                         points.insert (std::pair<int,float>( -9, 0.5));
 650                         points.insert (std::pair<int,float>( -8, 0.5));
 651                         points.insert (std::pair<int,float>( -7, 0.5));
 652                         points.insert (std::pair<int,float>( -6, 0.5));
 653                         points.insert (std::pair<int,float>( -5, 1.0));
 654                         points.insert (std::pair<int,float>( -4, 0.5));
 655                         points.insert (std::pair<int,float>( -3, 0.5));
 656                         points.insert (std::pair<int,float>( -2, 0.5));
 657                         points.insert (std::pair<int,float>( -1, 0.5));
 658
 659                         points.insert (std::pair<int,float>(  0, 1.0));
 660                         points.insert (std::pair<int,float>(  1, 0.5));
 661                         points.insert (std::pair<int,float>(  2, 0.5));
 662                         points.insert (std::pair<int,float>(  3, 0.5));
 663                         points.insert (std::pair<int,float>(  4, 0.5));
 664                         points.insert (std::pair<int,float>(  5, 0.5));
 665                         points.insert (std::pair<int,float>(  6, 0.5));
 666                         break;
 667
 668                 case DataType::MIDI:
 669                         points.insert (std::pair<int,float>(  0, 1.0));
 670                         points.insert (std::pair<int,float>( 16, 0.5));
 671                         points.insert (std::pair<int,float>( 32, 0.5));
 672                         points.insert (std::pair<int,float>( 48, 0.5));
 673                         points.insert (std::pair<int,float>( 64, 1.0));
 674                         points.insert (std::pair<int,float>( 80, 0.5));
 675                         points.insert (std::pair<int,float>( 96, 0.5));
 676                         points.insert (std::pair<int,float>(100, 1.0));
 677                         points.insert (std::pair<int,float>(112, 0.5));
 678                         points.insert (std::pair<int,float>(127, 1.0));
 679                         break;
 680                 }
 681
 682                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 683                         cairo_set_line_width (cr, (j->second));
 684
 685                         float fraction = 0;
 686                         gint pos;
 687
 688                         switch (*i) {
 689                         case DataType::AUDIO:
 690                                 if (j->first >= 0) {
 691                                         cairo_set_source_rgb (cr,
 692                                                         UINT_RGBA_R_FLT(peakcolor),
 693                                                         UINT_RGBA_G_FLT(peakcolor),
 694                                                         UINT_RGBA_B_FLT(peakcolor));
 695                                 }
 696                                 fraction = log_meter (j->first);
 697                                 pos = height - (gint) floor (height * fraction);
 698                                 cairo_move_to(cr, 0, pos + .5);
 699                                 cairo_line_to(cr, 3, pos + .5);
 700                                 cairo_stroke (cr);
 701                                 break;
 702                         case DataType::MIDI:
 703                                 fraction = (j->first) / 127.0;
 704                                 pos = height - (gint) floor (height * fraction);
 705                                 cairo_arc(cr, 1.5, pos, 1.0, 0, 2 * M_PI);
 706                                 cairo_fill(cr);
 707                                 break;
 708                         }
 709                 }
 710         }
 711
 712         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 713         TickPatterns::iterator p;
 714
 715         if ((p = ticks_patterns.find (w.get_name())) != metric_patterns.end()) {
 716                 cairo_pattern_destroy (p->second);
 717         }
 718
 719         ticks_patterns[w.get_name()] = pattern;
 720
 721         cairo_destroy (cr);
 722         cairo_surface_destroy (surface);
 723
 724         return pattern;
 725 }
 726
 727 gint
 728 MeterStrip::meter_ticks1_expose (GdkEventExpose *ev)
 729 {
 730         return meter_ticks_expose(ev, &meter_ticks1_area);
 731 }
 732
 733 gint
 734 MeterStrip::meter_ticks2_expose (GdkEventExpose *ev)
 735 {
 736         return meter_ticks_expose(ev, &meter_ticks2_area);
 737 }
 738
 739 gint
 740 MeterStrip::meter_ticks_expose (GdkEventExpose *ev, Gtk::DrawingArea *mta)
 741 {
 742         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 743         cairo_t* cr;
 744
 745         cr = gdk_cairo_create (win->gobj());
 746
 747         /* clip to expose area */
 748
 749         gdk_cairo_rectangle (cr, &ev->area);
 750         cairo_clip (cr);
 751
 752         cairo_pattern_t* pattern;
 753         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 754
 755         if (i == ticks_patterns.end()) {
 756                 pattern = render_ticks (*mta, _types);
 757         } else {
 758                 pattern = i->second;
 759         }
 760
 761         cairo_move_to (cr, 0, 0);
 762         cairo_set_source (cr, pattern);
 763
 764         gint width, height;
 765         win->get_size (width, height);
 766
 767         cairo_rectangle (cr, 0, 0, width, height);
 768         cairo_fill (cr);
 769
 770         cairo_destroy (cr);
 771
 772         return true;
 773 }
 774
 775 void
 776 MeterStrip::reset_group_peak_display (RouteGroup* group)
 777 {
 778         /* UNUSED -- need connection w/mixer || other meters */
 779         if (_route && group == _route->route_group()) {
 780                 reset_peak_display ();
 781         }
 782 }
 783
 784 void
 785 MeterStrip::reset_peak_display ()
 786 {
 787         _route->shared_peak_meter()->reset_max();
 788         level_meter->clear_meters();
 789         max_peak = -INFINITY;
 790         peak_display.set_name ("meterbridge peakindicator");
 791         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 792 }
 793
 794 bool
 795 MeterStrip::peak_button_release (GdkEventButton* ev)
 796 {
 797         reset_peak_display ();
 798         return true;
 799 }