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 #include "utils.h"
  42
  43 #include "meterbridge.h"
  44 #include "meter_strip.h"
  45
  46 #include "i18n.h"
  47
  48 using namespace ARDOUR;
  49 using namespace PBD;
  50 using namespace Gtk;
  51 using namespace Gtkmm2ext;
  52 using namespace std;
  53
  54 PBD::Signal1<void,MeterStrip*> MeterStrip::CatchDeletion;
  55
  56 MeterStrip::MetricPatterns MeterStrip::metric_patterns;
  57 MeterStrip::TickPatterns MeterStrip::ticks_patterns;
  58
  59 MeterStrip::MeterStrip (int metricmode)
  60         : AxisView(0)
  61         , RouteUI(0)
  62 {
  63         level_meter = 0;
  64         set_spacing(2);
  65         peakbx.set_size_request(-1, 14);
  66         btnbox.set_size_request(-1, 16);
  67         namebx.set_size_request(14, 52);
  68
  69         _types.clear ();
  70         switch(metricmode) {
  71                 case 1:
  72                         meter_metric_area.set_name ("AudioBusMetrics");
  73                         _types.push_back (DataType::AUDIO);
  74                         break;
  75                 case 2:
  76                         meter_metric_area.set_name ("AudioTrackMetrics");
  77                         _types.push_back (DataType::AUDIO);
  78                         break;
  79                 case 3:
  80                         meter_metric_area.set_name ("MidiTrackMetrics");
  81                         _types.push_back (DataType::MIDI);
  82                         break;
  83                 default:
  84                         meter_metric_area.set_name ("AudioMidiTrackMetrics");
  85                         _types.push_back (DataType::AUDIO);
  86                         _types.push_back (DataType::MIDI);
  87                         break;
  88         }
  89         //meter_metric_area.queue_draw ();
  90
  91         set_size_request_to_display_given_text (meter_metric_area, "-8888", 1, 0);
  92         meter_metric_area.signal_expose_event().connect (
  93                         sigc::mem_fun(*this, &MeterStrip::meter_metrics_expose));
  94
  95         meterbox.pack_start(meter_metric_area, true, false);
  96
  97         pack_start (peakbx, false, false);
  98         pack_start (meterbox, true, true);
  99         pack_start (btnbox, false, false);
 100         pack_start (namebx, false, false);
 101
 102         peakbx.show();
 103         btnbox.show();
 104         meter_metric_area.show();
 105         meterbox.show();
 106         namebx.show();
 107
 108         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &MeterStrip::on_theme_changed));
 109         ColorsChanged.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 110         DPIReset.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 111 }
 112
 113 MeterStrip::MeterStrip (Session* sess, boost::shared_ptr<ARDOUR::Route> rt)
 114         : AxisView(sess)
 115         , RouteUI(sess)
 116         , _route(rt)
 117         , peak_display()
 118 {
 119         set_spacing(2);
 120         RouteUI::set_route (rt);
 121
 122         int meter_width = 6;
 123         if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 124                 meter_width = 12;
 125         }
 126
 127         // level meter + ticks
 128         level_meter = new LevelMeter(sess);
 129         level_meter->set_meter (_route->shared_peak_meter().get());
 130         level_meter->clear_meters();
 131         level_meter->setup_meters (400, meter_width, 6);
 132
 133         Gtk::Alignment *meter_align = Gtk::manage (new Gtk::Alignment());
 134         meter_align->set(0.5, 0.5, 0.0, 1.0);
 135         meter_align->add(*level_meter);
 136
 137         meterbox.pack_start(meter_ticks1_area, true, false);
 138         meterbox.pack_start(*meter_align, true, true);
 139         meterbox.pack_start(meter_ticks2_area, true, false);
 140
 141         // peak display
 142         peak_display.set_name ("meterbridge peakindicator");
 143         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 144         max_peak = minus_infinity();
 145         peak_display.unset_flags (Gtk::CAN_FOCUS);
 146         peak_display.set_size_request(12, 8);
 147         peak_display.set_corner_radius(2);
 148
 149         Gtk::Alignment *peak_align = Gtk::manage (new Gtk::Alignment());
 150         peak_align->set(0.5, 1.0, 1.0, 0.8);
 151         peak_align->add(peak_display);
 152         peakbx.pack_start(*peak_align, true, true, 3);
 153         peakbx.set_size_request(-1, 14);
 154
 155         // add track-name label
 156         name_label.set_text(_route->name().c_str());
 157         name_label.set_corner_radius(2);
 158         name_label.set_name("solo isolate"); // XXX re-use 'very_small_text'
 159         name_label.set_angle(-90.0);
 160         name_label.layout()->set_ellipsize (Pango::ELLIPSIZE_END);
 161         name_label.layout()->set_width(48 * PANGO_SCALE);
 162         name_label.set_size_request(18, 50);
 163
 164         namebx.set_size_request(18, 52);
 165         namebx.pack_start(name_label, true, false, 3);
 166
 167         // rec-enable button
 168         btnbox.pack_start(*rec_enable_button, true, false);
 169         rec_enable_button->set_corner_radius(2);
 170         btnbox.set_size_request(-1, 16);
 171
 172         pack_start (peakbx, false, false);
 173         pack_start (meterbox, true, true);
 174         pack_start (btnbox, false, false);
 175         pack_start (namebx, false, false);
 176
 177         peak_display.show();
 178         peakbx.show();
 179         meter_ticks1_area.show();
 180         meter_ticks2_area.show();
 181         meterbox.show();
 182         level_meter->show();
 183         meter_align->show();
 184         peak_align->show();
 185         btnbox.show();
 186         name_label.show();
 187         namebx.show();
 188
 189         _route->shared_peak_meter()->ConfigurationChanged.connect (
 190                         route_connections, invalidator (*this), boost::bind (&MeterStrip::meter_configuration_changed, this, _1), gui_context()
 191                         );
 192         meter_configuration_changed (_route->shared_peak_meter()->input_streams ());
 193
 194         meter_ticks1_area.set_size_request(3,-1);
 195         meter_ticks2_area.set_size_request(3,-1);
 196         meter_ticks1_area.signal_expose_event().connect (sigc::mem_fun(*this, &MeterStrip::meter_ticks1_expose));
 197         meter_ticks2_area.signal_expose_event().connect (sigc::mem_fun(*this, &MeterStrip::meter_ticks2_expose));
 198
 199         _route->DropReferences.connect (route_connections, invalidator (*this), boost::bind (&MeterStrip::self_delete, this), gui_context());
 200         _route->PropertyChanged.connect (route_connections, invalidator (*this), boost::bind (&MeterStrip::strip_property_changed, this, _1), gui_context());
 201
 202         peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &MeterStrip::peak_button_release), false);
 203
 204         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &MeterStrip::on_theme_changed));
 205         ColorsChanged.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 206         DPIReset.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 207 }
 208
 209 MeterStrip::~MeterStrip ()
 210 {
 211         delete level_meter;
 212         CatchDeletion (this);
 213 }
 214
 215 void
 216 MeterStrip::self_delete ()
 217 {
 218         delete this;
 219 }
 220
 221 void
 222 MeterStrip::update_rec_display ()
 223 {
 224         RouteUI::update_rec_display ();
 225 }
 226
 227 std::string
 228 MeterStrip::state_id() const
 229 {
 230         return string_compose ("mtrs %1", _route->id().to_s());
 231 }
 232
 233 void
 234 MeterStrip::set_button_names()
 235 {
 236         rec_enable_button->set_text ("");
 237         rec_enable_button->set_image (::get_icon (X_("record_normal_red")));
 238 }
 239
 240 void
 241 MeterStrip::strip_property_changed (const PropertyChange& what_changed)
 242 {
 243         if (!what_changed.contains (ARDOUR::Properties::name)) {
 244                 return;
 245         }
 246         ENSURE_GUI_THREAD (*this, &MeterStrip::strip_name_changed, what_changed)
 247         name_label.set_text(_route->name());
 248 }
 249
 250 void
 251 MeterStrip::fast_update ()
 252 {
 253         float mpeak = level_meter->update_meters();
 254         if (mpeak > max_peak) {
 255                 max_peak = mpeak;
 256                 if (mpeak >= 0.0f) {
 257                         peak_display.set_name ("meterbridge peakindicator on");
 258                         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 259                 }
 260         }
 261 }
 262
 263 void
 264 MeterStrip::on_theme_changed()
 265 {
 266         metric_patterns.clear();
 267         ticks_patterns.clear();
 268
 269         if (level_meter && _route) {
 270                 int meter_width = 6;
 271                 if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 272                         meter_width = 12;
 273                 }
 274                 level_meter->setup_meters (400, meter_width, 6);
 275         }
 276         meter_metric_area.queue_draw();
 277         meter_ticks1_area.queue_draw();
 278         meter_ticks2_area.queue_draw();
 279 }
 280
 281 void
 282 MeterStrip::meter_configuration_changed (ChanCount c)
 283 {
 284         int type = 0;
 285         _types.clear ();
 286
 287         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 288                 if (c.get (*i) > 0) {
 289                         _types.push_back (*i);
 290                         type |= 1 << (*i);
 291                 }
 292         }
 293
 294         // TODO draw Inactive routes or busses with different styles
 295         if (boost::dynamic_pointer_cast<AudioTrack>(_route) == 0
 296                         && boost::dynamic_pointer_cast<MidiTrack>(_route) == 0
 297                         ) {
 298                 meter_ticks1_area.set_name ("AudioBusMetrics");
 299                 meter_ticks2_area.set_name ("AudioBusMetrics");
 300         }
 301         else if (type == (1 << DataType::AUDIO)) {
 302                 meter_ticks1_area.set_name ("AudioTrackMetrics");
 303                 meter_ticks2_area.set_name ("AudioTrackMetrics");
 304         }
 305         else if (type == (1 << DataType::MIDI)) {
 306                 meter_ticks1_area.set_name ("MidiTrackMetrics");
 307                 meter_ticks2_area.set_name ("MidiTrackMetrics");
 308         } else {
 309                 meter_ticks1_area.set_name ("AudioMidiTrackMetrics");
 310                 meter_ticks2_area.set_name ("AudioMidiTrackMetrics");
 311         }
 312
 313         on_theme_changed();
 314 }
 315
 316 void
 317 MeterStrip::on_size_request (Gtk::Requisition* r)
 318 {
 319         metric_patterns.clear();
 320         ticks_patterns.clear();
 321         VBox::on_size_request(r);
 322 }
 323
 324 void
 325 MeterStrip::on_size_allocate (Gtk::Allocation& a)
 326 {
 327         metric_patterns.clear();
 328         ticks_patterns.clear();
 329         VBox::on_size_allocate(a);
 330 }
 331
 332 /* XXX code-copy from gain_meter.cc -- TODO consolidate
 333  *
 334  * slightly different:
 335  *  - ticks & label positions are swapped
 336  *  - more ticks for audio (longer meter by default)
 337  *  - right-aligned lables, unit-legend
 338  *  - height limitation of FastMeter::max_pattern_metric_size is included here
 339  */
 340 cairo_pattern_t*
 341 MeterStrip::render_metrics (Gtk::Widget& w, vector<DataType> types)
 342 {
 343         Glib::RefPtr<Gdk::Window> win (w.get_window());
 344
 345         gint width, height;
 346         win->get_size (width, height);
 347
 348         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 349         cairo_t* cr = cairo_create (surface);
 350         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 351
 352
 353         Pango::AttrList audio_font_attributes;
 354         Pango::AttrList midi_font_attributes;
 355         Pango::AttrList unit_font_attributes;
 356
 357         Pango::AttrFontDesc* font_attr;
 358         Pango::FontDescription font;
 359
 360         font = Pango::FontDescription (""); // use defaults
 361         //font = get_font_for_style("gain-fader");
 362         //font = w.get_style()->get_font();
 363
 364         font.set_weight (Pango::WEIGHT_NORMAL);
 365         font.set_size (9.0 * PANGO_SCALE);
 366         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 367         audio_font_attributes.change (*font_attr);
 368         delete font_attr;
 369
 370         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 371         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 372         font.set_size (7.5 * PANGO_SCALE);
 373         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 374         midi_font_attributes.change (*font_attr);
 375         delete font_attr;
 376
 377         font.set_size (7.0 * PANGO_SCALE);
 378         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 379         unit_font_attributes.change (*font_attr);
 380         delete font_attr;
 381
 382         cairo_move_to (cr, 0, 0);
 383         cairo_rectangle (cr, 0, 0, width, height);
 384         {
 385                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 386                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 387         }
 388         cairo_fill (cr);
 389
 390         height = min(1024, height); // XXX see FastMeter::max_pattern_metric_size
 391         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 392
 393         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 394
 395                 Gdk::Color c;
 396
 397                 if (types.size() > 1) {
 398                         /* we're overlaying more than 1 set of marks, so use different colours */
 399                         Gdk::Color c;
 400                         switch (*i) {
 401                         case DataType::AUDIO:
 402                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 403                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 404                                 break;
 405                         case DataType::MIDI:
 406                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 407                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 408                                 break;
 409                         }
 410                 } else {
 411                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 412                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 413                 }
 414
 415                 std::map<int,float> points;
 416
 417                 switch (*i) {
 418                 case DataType::AUDIO:
 419                         layout->set_attributes (audio_font_attributes);
 420                         points.insert (std::pair<int,float>(-50, 0.5));
 421                         points.insert (std::pair<int,float>(-40, 0.5));
 422                         points.insert (std::pair<int,float>(-30, 0.5));
 423                         points.insert (std::pair<int,float>(-25, 0.5));
 424                         points.insert (std::pair<int,float>(-20, 1.0));
 425                         points.insert (std::pair<int,float>(-18, 1.0));
 426                         points.insert (std::pair<int,float>(-15, 1.0));
 427                         points.insert (std::pair<int,float>(-10, 1.0));
 428                         points.insert (std::pair<int,float>( -5, 1.0));
 429                         points.insert (std::pair<int,float>( -3, 0.5));
 430                         points.insert (std::pair<int,float>(  0, 1.0));
 431                         points.insert (std::pair<int,float>(  3, 0.5));
 432                         break;
 433
 434                 case DataType::MIDI:
 435                         layout->set_attributes (midi_font_attributes);
 436                         points.insert (std::pair<int,float>(  0, 1.0));
 437                         if (types.size() == 1) {
 438                                 points.insert (std::pair<int,float>( 16, 0.5));
 439                                 points.insert (std::pair<int,float>( 32, 0.5));
 440                                 points.insert (std::pair<int,float>( 48, 0.5));
 441                                 points.insert (std::pair<int,float>( 64, 1.0));
 442                                 points.insert (std::pair<int,float>( 80, 0.5));
 443                                 points.insert (std::pair<int,float>( 96, 0.5));
 444                                 points.insert (std::pair<int,float>(100, 0.5));
 445                                 points.insert (std::pair<int,float>(112, 0.5));
 446                         } else {
 447                                 /* labels that don't overlay with dB */
 448                                 points.insert (std::pair<int,float>( 48, 0.5));
 449                                 points.insert (std::pair<int,float>( 72, 0.5));
 450                                 points.insert (std::pair<int,float>( 88, 0.5));
 451                         }
 452                         points.insert (std::pair<int,float>(127, 1.0));
 453                         break;
 454                 }
 455
 456                 char buf[32];
 457                 gint pos;
 458
 459                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 460
 461                         float fraction = 0;
 462                         switch (*i) {
 463                         case DataType::AUDIO:
 464                                 cairo_set_line_width (cr, (j->second));
 465                                 if (j->first >= 0) {
 466                                         cairo_set_source_rgb (cr,
 467                                                         UINT_RGBA_R_FLT(peakcolor),
 468                                                         UINT_RGBA_G_FLT(peakcolor),
 469                                                         UINT_RGBA_B_FLT(peakcolor));
 470                                 }
 471                                 fraction = log_meter (j->first);
 472                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 473                                 pos = height - (gint) floor (height * fraction);
 474                                 cairo_move_to(cr, width-2.5, pos + .5);
 475                                 cairo_line_to(cr, width, pos + .5);
 476                                 cairo_stroke (cr);
 477                                 break;
 478                         case DataType::MIDI:
 479                                 cairo_set_line_width (cr, 1.0);
 480                                 fraction = (j->first) / 127.0;
 481                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 482                                 pos = height - (gint) rintf (height * fraction);
 483                                 cairo_arc(cr, 3, pos, 1.0, 0, 2 * M_PI);
 484                                 cairo_fill(cr);
 485                                 break;
 486                         }
 487
 488                         layout->set_text(buf);
 489
 490                         /* we want logical extents, not ink extents here */
 491
 492                         int tw, th;
 493                         layout->get_pixel_size(tw, th);
 494
 495                         int p = pos - (th / 2);
 496                         p = min (p, height - th);
 497                         p = max (p, 0);
 498
 499                         cairo_move_to (cr, width-4-tw, p);
 500                         pango_cairo_show_layout (cr, layout->gobj());
 501                 }
 502         }
 503
 504         if (types.size() == 1) {
 505                 int tw, th;
 506                 layout->set_attributes (unit_font_attributes);
 507                 switch (types.at(0)) {
 508                         case DataType::AUDIO:
 509                                 layout->set_text("dBFS");
 510                                 layout->get_pixel_size(tw, th);
 511                                 break;
 512                         case DataType::MIDI:
 513                                 layout->set_text("vel");
 514                                 layout->get_pixel_size(tw, th);
 515                                 break;
 516                 }
 517                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 518                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 519                 cairo_move_to (cr, 1, height - th - 1.5);
 520                 pango_cairo_show_layout (cr, layout->gobj());
 521         }
 522
 523         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 524         MetricPatterns::iterator p;
 525
 526         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
 527                 cairo_pattern_destroy (p->second);
 528         }
 529
 530         metric_patterns[w.get_name()] = pattern;
 531
 532         cairo_destroy (cr);
 533         cairo_surface_destroy (surface);
 534
 535         return pattern;
 536 }
 537
 538 /* XXX code-copy from gain_meter.cc -- TODO consolidate */
 539 gint
 540 MeterStrip::meter_metrics_expose (GdkEventExpose *ev)
 541 {
 542         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 543         cairo_t* cr;
 544
 545         cr = gdk_cairo_create (win->gobj());
 546
 547         /* clip to expose area */
 548
 549         gdk_cairo_rectangle (cr, &ev->area);
 550         cairo_clip (cr);
 551
 552         cairo_pattern_t* pattern;
 553         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
 554
 555         if (i == metric_patterns.end()) {
 556                 pattern = render_metrics (meter_metric_area, _types);
 557         } else {
 558                 pattern = i->second;
 559         }
 560
 561         cairo_move_to (cr, 0, 0);
 562         cairo_set_source (cr, pattern);
 563
 564         gint width, height;
 565         win->get_size (width, height);
 566
 567         cairo_rectangle (cr, 0, 0, width, height);
 568         cairo_fill (cr);
 569
 570         cairo_destroy (cr);
 571
 572         return true;
 573 }
 574
 575 cairo_pattern_t*
 576 MeterStrip::render_ticks (Gtk::Widget& w, vector<DataType> types)
 577 {
 578         Glib::RefPtr<Gdk::Window> win (w.get_window());
 579
 580         gint width, height;
 581         win->get_size (width, height);
 582
 583         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 584         cairo_t* cr = cairo_create (surface);
 585
 586         cairo_move_to (cr, 0, 0);
 587         cairo_rectangle (cr, 0, 0, width, height);
 588         {
 589                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 590                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 591         }
 592         cairo_fill (cr);
 593
 594         height = min(1024, height); // XXX see FastMeter::max_pattern_metric_size
 595         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 596
 597         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 598
 599                 Gdk::Color c;
 600                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 601
 602                 if (types.size() > 1) {
 603                         /* we're overlaying more than 1 set of marks, so use different colours */
 604                         switch (*i) {
 605                         case DataType::AUDIO:
 606                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 607                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 608                                 break;
 609                         case DataType::MIDI:
 610                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 611                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 612                                 break;
 613                         }
 614                 } else {
 615                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 616                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 617                 }
 618
 619                 std::map<int,float> points;
 620
 621                 switch (*i) {
 622                 case DataType::AUDIO:
 623                         points.insert (std::pair<int,float>(-60, 0.5));
 624                         points.insert (std::pair<int,float>(-50, 0.5));
 625                         points.insert (std::pair<int,float>(-40, 0.5));
 626                         points.insert (std::pair<int,float>(-30, 0.5));
 627                         points.insert (std::pair<int,float>(-25, 0.5));
 628                         points.insert (std::pair<int,float>(-20, 1.0));
 629
 630                         points.insert (std::pair<int,float>(-19, 0.5));
 631                         points.insert (std::pair<int,float>(-18, 1.0));
 632                         points.insert (std::pair<int,float>(-17, 0.5));
 633                         points.insert (std::pair<int,float>(-16, 0.5));
 634                         points.insert (std::pair<int,float>(-15, 1.0));
 635
 636                         points.insert (std::pair<int,float>(-14, 0.5));
 637                         points.insert (std::pair<int,float>(-13, 0.5));
 638                         points.insert (std::pair<int,float>(-12, 0.5));
 639                         points.insert (std::pair<int,float>(-11, 0.5));
 640                         points.insert (std::pair<int,float>(-10, 1.0));
 641
 642                         points.insert (std::pair<int,float>( -9, 0.5));
 643                         points.insert (std::pair<int,float>( -8, 0.5));
 644                         points.insert (std::pair<int,float>( -7, 0.5));
 645                         points.insert (std::pair<int,float>( -6, 0.5));
 646                         points.insert (std::pair<int,float>( -5, 1.0));
 647                         points.insert (std::pair<int,float>( -4, 0.5));
 648                         points.insert (std::pair<int,float>( -3, 0.5));
 649                         points.insert (std::pair<int,float>( -2, 0.5));
 650                         points.insert (std::pair<int,float>( -1, 0.5));
 651
 652                         points.insert (std::pair<int,float>(  0, 1.0));
 653                         points.insert (std::pair<int,float>(  1, 0.5));
 654                         points.insert (std::pair<int,float>(  2, 0.5));
 655                         points.insert (std::pair<int,float>(  3, 0.5));
 656                         points.insert (std::pair<int,float>(  4, 0.5));
 657                         points.insert (std::pair<int,float>(  5, 0.5));
 658                         break;
 659
 660                 case DataType::MIDI:
 661                         points.insert (std::pair<int,float>(  0, 1.0));
 662                         points.insert (std::pair<int,float>( 16, 0.5));
 663                         points.insert (std::pair<int,float>( 32, 0.5));
 664                         points.insert (std::pair<int,float>( 48, 0.5));
 665                         points.insert (std::pair<int,float>( 64, 1.0));
 666                         points.insert (std::pair<int,float>( 80, 0.5));
 667                         points.insert (std::pair<int,float>( 96, 0.5));
 668                         points.insert (std::pair<int,float>(100, 1.0));
 669                         points.insert (std::pair<int,float>(112, 0.5));
 670                         points.insert (std::pair<int,float>(127, 1.0));
 671                         break;
 672                 }
 673
 674                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 675                         cairo_set_line_width (cr, (j->second));
 676
 677                         float fraction = 0;
 678                         gint pos;
 679
 680                         switch (*i) {
 681                         case DataType::AUDIO:
 682                                 if (j->first >= 0 || j->first == -9) {
 683                                         cairo_set_source_rgb (cr,
 684                                                         UINT_RGBA_R_FLT(peakcolor),
 685                                                         UINT_RGBA_G_FLT(peakcolor),
 686                                                         UINT_RGBA_B_FLT(peakcolor));
 687                                 } else {
 688                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 689                                 }
 690                                 fraction = log_meter (j->first);
 691                                 pos = height - (gint) floor (height * fraction);
 692                                 cairo_move_to(cr, 0, pos + .5);
 693                                 cairo_line_to(cr, 3, pos + .5);
 694                                 cairo_stroke (cr);
 695                                 break;
 696                         case DataType::MIDI:
 697                                 fraction = (j->first) / 127.0;
 698                                 pos = height - (gint) floor (height * fraction);
 699                                 cairo_arc(cr, 1.5, pos, 1.0, 0, 2 * M_PI);
 700                                 cairo_fill(cr);
 701                                 break;
 702                         }
 703                 }
 704         }
 705
 706         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 707         TickPatterns::iterator p;
 708
 709         if ((p = ticks_patterns.find (w.get_name())) != metric_patterns.end()) {
 710                 cairo_pattern_destroy (p->second);
 711         }
 712
 713         ticks_patterns[w.get_name()] = pattern;
 714
 715         cairo_destroy (cr);
 716         cairo_surface_destroy (surface);
 717
 718         return pattern;
 719 }
 720
 721 gint
 722 MeterStrip::meter_ticks1_expose (GdkEventExpose *ev)
 723 {
 724         return meter_ticks_expose(ev, &meter_ticks1_area);
 725 }
 726
 727 gint
 728 MeterStrip::meter_ticks2_expose (GdkEventExpose *ev)
 729 {
 730         return meter_ticks_expose(ev, &meter_ticks2_area);
 731 }
 732
 733 gint
 734 MeterStrip::meter_ticks_expose (GdkEventExpose *ev, Gtk::DrawingArea *mta)
 735 {
 736         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 737         cairo_t* cr;
 738
 739         cr = gdk_cairo_create (win->gobj());
 740
 741         /* clip to expose area */
 742
 743         gdk_cairo_rectangle (cr, &ev->area);
 744         cairo_clip (cr);
 745
 746         cairo_pattern_t* pattern;
 747         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 748
 749         if (i == ticks_patterns.end()) {
 750                 pattern = render_ticks (*mta, _types);
 751         } else {
 752                 pattern = i->second;
 753         }
 754
 755         cairo_move_to (cr, 0, 0);
 756         cairo_set_source (cr, pattern);
 757
 758         gint width, height;
 759         win->get_size (width, height);
 760
 761         cairo_rectangle (cr, 0, 0, width, height);
 762         cairo_fill (cr);
 763
 764         cairo_destroy (cr);
 765
 766         return true;
 767 }
 768
 769 void
 770 MeterStrip::reset_group_peak_display (RouteGroup* group)
 771 {
 772         /* UNUSED -- need connection w/mixer || other meters */
 773         if (_route && group == _route->route_group()) {
 774                 reset_peak_display ();
 775         }
 776 }
 777
 778 void
 779 MeterStrip::reset_peak_display ()
 780 {
 781         _route->shared_peak_meter()->reset_max();
 782         level_meter->clear_meters();
 783         max_peak = -INFINITY;
 784         peak_display.set_name ("meterbridge peakindicator");
 785         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 786 }
 787
 788 bool
 789 MeterStrip::peak_button_release (GdkEventButton* ev)
 790 {
 791         reset_peak_display ();
 792         return true;
 793 }