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/keyboard.h>
  34 #include <gtkmm2ext/utils.h>
  35 #include <gtkmm2ext/rgb_macros.h>
  36
  37 #include "ardour_ui.h"
  38 #include "global_signals.h"
  39 #include "logmeter.h"
  40 #include "gui_thread.h"
  41 #include "ardour_window.h"
  42 #include "utils.h"
  43
  44 #include "meterbridge.h"
  45 #include "meter_strip.h"
  46
  47 #include "i18n.h"
  48
  49 using namespace ARDOUR;
  50 using namespace PBD;
  51 using namespace Gtk;
  52 using namespace Gtkmm2ext;
  53 using namespace std;
  54
  55 PBD::Signal1<void,MeterStrip*> MeterStrip::CatchDeletion;
  56 PBD::Signal0<void> MeterStrip::ResetAllPeakDisplays;
  57 PBD::Signal1<void,RouteGroup*> MeterStrip::ResetGroupPeakDisplays;
  58
  59
  60 MeterStrip::MetricPatterns MeterStrip::metric_patterns;
  61 MeterStrip::TickPatterns MeterStrip::ticks_patterns;
  62 int MeterStrip::max_pattern_metric_size = 1026; // +2 border
  63
  64 MeterStrip::MeterStrip (int metricmode)
  65         : AxisView(0)
  66         , RouteUI(0)
  67 {
  68         level_meter = 0;
  69         set_spacing(2);
  70         peakbx.set_size_request(-1, 14);
  71         btnbox.set_size_request(-1, 16);
  72         namebx.set_size_request(18, 52);
  73
  74         _types.clear ();
  75         switch(metricmode) {
  76                 case 1:
  77                         meter_metric_area.set_name ("AudioBusMetrics");
  78                         _types.push_back (DataType::AUDIO);
  79                         break;
  80                 case 2:
  81                         meter_metric_area.set_name ("AudioTrackMetrics");
  82                         _types.push_back (DataType::AUDIO);
  83                         break;
  84                 case 3:
  85                         meter_metric_area.set_name ("MidiTrackMetrics");
  86                         _types.push_back (DataType::MIDI);
  87                         break;
  88                 default:
  89                         meter_metric_area.set_name ("AudioMidiTrackMetrics");
  90                         _types.push_back (DataType::AUDIO);
  91                         _types.push_back (DataType::MIDI);
  92                         break;
  93         }
  94         //meter_metric_area.queue_draw ();
  95
  96         set_size_request_to_display_given_text (meter_metric_area, "-8888", 1, 0);
  97         meter_metric_area.signal_expose_event().connect (
  98                         sigc::mem_fun(*this, &MeterStrip::meter_metrics_expose));
  99
 100         meterbox.pack_start(meter_metric_area, true, false);
 101
 102         pack_start (peakbx, false, false);
 103         pack_start (meterbox, true, true);
 104         pack_start (btnbox, false, false);
 105         pack_start (namebx, false, false);
 106
 107         peakbx.show();
 108         btnbox.show();
 109         meter_metric_area.show();
 110         meterbox.show();
 111         namebx.show();
 112
 113         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &MeterStrip::on_theme_changed));
 114         ColorsChanged.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 115         DPIReset.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 116 }
 117
 118 MeterStrip::MeterStrip (Session* sess, boost::shared_ptr<ARDOUR::Route> rt)
 119         : AxisView(sess)
 120         , RouteUI(sess)
 121         , _route(rt)
 122         , peak_display()
 123 {
 124         set_spacing(2);
 125         RouteUI::set_route (rt);
 126
 127         int meter_width = 6;
 128         if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 129                 meter_width = 12;
 130         }
 131
 132         // level meter + ticks
 133         level_meter = new LevelMeter(sess);
 134         level_meter->set_meter (_route->shared_peak_meter().get());
 135         level_meter->clear_meters();
 136         level_meter->setup_meters (220, meter_width, 6);
 137
 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         peak_display.set_corner_radius(2);
 152
 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
 159         name_label.set_text(_route->name().c_str());
 160         name_label.set_corner_radius(2);
 161         name_label.set_name("solo isolate"); // XXX re-use 'very_small_text'
 162         name_label.set_angle(-90.0);
 163         name_label.layout()->set_ellipsize (Pango::ELLIPSIZE_END);
 164         name_label.layout()->set_width(48 * PANGO_SCALE);
 165         name_label.set_size_request(18, 50);
 166         name_label.set_alignment(-1.0, .5);
 167
 168         namebx.set_size_request(18, 52);
 169         namebx.pack_start(name_label, true, false, 3);
 170
 171         // rec-enable button
 172         btnbox.pack_start(*rec_enable_button, true, false);
 173         rec_enable_button->set_corner_radius(2);
 174         btnbox.set_size_request(-1, 16);
 175
 176         pack_start (peakbx, false, false);
 177         pack_start (meterbox, true, true);
 178         pack_start (btnbox, false, false);
 179         pack_start (namebx, false, false);
 180
 181         peak_display.show();
 182         peakbx.show();
 183         meter_ticks1_area.show();
 184         meter_ticks2_area.show();
 185         meterbox.show();
 186         level_meter->show();
 187         meter_align.show();
 188         peak_align.show();
 189         btnbox.show();
 190         name_label.show();
 191         namebx.show();
 192
 193         _route->shared_peak_meter()->ConfigurationChanged.connect (
 194                         route_connections, invalidator (*this), boost::bind (&MeterStrip::meter_configuration_changed, this, _1), gui_context()
 195                         );
 196         meter_configuration_changed (_route->shared_peak_meter()->input_streams ());
 197
 198         meter_ticks1_area.set_size_request(3,-1);
 199         meter_ticks2_area.set_size_request(3,-1);
 200         meter_ticks1_area.signal_expose_event().connect (sigc::mem_fun(*this, &MeterStrip::meter_ticks1_expose));
 201         meter_ticks2_area.signal_expose_event().connect (sigc::mem_fun(*this, &MeterStrip::meter_ticks2_expose));
 202
 203         _route->DropReferences.connect (route_connections, invalidator (*this), boost::bind (&MeterStrip::self_delete, this), gui_context());
 204         _route->PropertyChanged.connect (route_connections, invalidator (*this), boost::bind (&MeterStrip::strip_property_changed, this, _1), gui_context());
 205
 206         peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &MeterStrip::peak_button_release), false);
 207
 208         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &MeterStrip::on_theme_changed));
 209         ColorsChanged.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 210         DPIReset.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 211 }
 212
 213 MeterStrip::~MeterStrip ()
 214 {
 215         delete level_meter;
 216         CatchDeletion (this);
 217 }
 218
 219 void
 220 MeterStrip::self_delete ()
 221 {
 222         delete this;
 223 }
 224
 225 void
 226 MeterStrip::update_rec_display ()
 227 {
 228         RouteUI::update_rec_display ();
 229 }
 230
 231 std::string
 232 MeterStrip::state_id() const
 233 {
 234         return string_compose ("mtrs %1", _route->id().to_s());
 235 }
 236
 237 void
 238 MeterStrip::set_button_names()
 239 {
 240         rec_enable_button->set_text ("");
 241         rec_enable_button->set_image (::get_icon (X_("record_normal_red")));
 242 }
 243
 244 void
 245 MeterStrip::strip_property_changed (const PropertyChange& what_changed)
 246 {
 247         if (!what_changed.contains (ARDOUR::Properties::name)) {
 248                 return;
 249         }
 250         ENSURE_GUI_THREAD (*this, &MeterStrip::strip_name_changed, what_changed)
 251         name_label.set_text(_route->name());
 252 }
 253
 254 void
 255 MeterStrip::fast_update ()
 256 {
 257         float mpeak = level_meter->update_meters();
 258         if (mpeak > max_peak) {
 259                 max_peak = mpeak;
 260                 if (mpeak >= 0.0f) {
 261                         peak_display.set_name ("meterbridge peakindicator on");
 262                         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 263                 }
 264         }
 265 }
 266
 267 void
 268 MeterStrip::on_theme_changed()
 269 {
 270         metric_patterns.clear();
 271         ticks_patterns.clear();
 272
 273         if (level_meter && _route) {
 274                 int meter_width = 6;
 275                 if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 276                         meter_width = 12;
 277                 }
 278                 level_meter->setup_meters (220, meter_width, 6);
 279         }
 280         meter_metric_area.queue_draw();
 281         meter_ticks1_area.queue_draw();
 282         meter_ticks2_area.queue_draw();
 283 }
 284
 285 void
 286 MeterStrip::meter_configuration_changed (ChanCount c)
 287 {
 288         int type = 0;
 289         _types.clear ();
 290
 291         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 292                 if (c.get (*i) > 0) {
 293                         _types.push_back (*i);
 294                         type |= 1 << (*i);
 295                 }
 296         }
 297
 298         // TODO draw Inactive routes or busses with different styles
 299         if (boost::dynamic_pointer_cast<AudioTrack>(_route) == 0
 300                         && boost::dynamic_pointer_cast<MidiTrack>(_route) == 0
 301                         ) {
 302                 meter_ticks1_area.set_name ("AudioBusMetrics");
 303                 meter_ticks2_area.set_name ("AudioBusMetrics");
 304         }
 305         else if (type == (1 << DataType::AUDIO)) {
 306                 meter_ticks1_area.set_name ("AudioTrackMetrics");
 307                 meter_ticks2_area.set_name ("AudioTrackMetrics");
 308         }
 309         else if (type == (1 << DataType::MIDI)) {
 310                 meter_ticks1_area.set_name ("MidiTrackMetrics");
 311                 meter_ticks2_area.set_name ("MidiTrackMetrics");
 312         } else {
 313                 meter_ticks1_area.set_name ("AudioMidiTrackMetrics");
 314                 meter_ticks2_area.set_name ("AudioMidiTrackMetrics");
 315         }
 316
 317         on_theme_changed();
 318 }
 319
 320 void
 321 MeterStrip::on_size_request (Gtk::Requisition* r)
 322 {
 323         metric_patterns.clear();
 324         ticks_patterns.clear();
 325         VBox::on_size_request(r);
 326 }
 327
 328 void
 329 MeterStrip::on_size_allocate (Gtk::Allocation& a)
 330 {
 331         metric_patterns.clear();
 332         ticks_patterns.clear();
 333         const int wh = a.get_height();
 334         int nh = ceilf(wh * .11f);
 335         if (nh < 52) nh = 52;
 336         if (nh > 148) nh = 148;
 337         namebx.set_size_request(18, nh);
 338         if (_route) {
 339                 name_label.set_size_request(18, nh-2);
 340                 name_label.layout()->set_width((nh-4) * PANGO_SCALE);
 341         }
 342         VBox::on_size_allocate(a);
 343 }
 344
 345 /* XXX code-copy from gain_meter.cc -- TODO consolidate
 346  *
 347  * slightly different:
 348  *  - ticks & label positions are swapped
 349  *  - more ticks for audio (longer meter by default)
 350  *  - right-aligned lables, unit-legend
 351  *  - height limitation of FastMeter::max_pattern_metric_size is included here
 352  */
 353 cairo_pattern_t*
 354 MeterStrip::render_metrics (Gtk::Widget& w, vector<DataType> types)
 355 {
 356         Glib::RefPtr<Gdk::Window> win (w.get_window());
 357
 358         gint width, height;
 359         win->get_size (width, height);
 360
 361         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 362         cairo_t* cr = cairo_create (surface);
 363         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 364
 365         Pango::AttrList audio_font_attributes;
 366         Pango::AttrList midi_font_attributes;
 367         Pango::AttrList unit_font_attributes;
 368
 369         Pango::AttrFontDesc* font_attr;
 370         Pango::FontDescription font;
 371
 372         font = Pango::FontDescription (""); // use defaults
 373         //font = get_font_for_style("gain-fader");
 374         //font = w.get_style()->get_font();
 375
 376         font.set_weight (Pango::WEIGHT_NORMAL);
 377         font.set_size (9.0 * PANGO_SCALE);
 378         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 379         audio_font_attributes.change (*font_attr);
 380         delete font_attr;
 381
 382         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 383         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 384         font.set_size (7.5 * PANGO_SCALE);
 385         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 386         midi_font_attributes.change (*font_attr);
 387         delete font_attr;
 388
 389         font.set_size (7.0 * PANGO_SCALE);
 390         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 391         unit_font_attributes.change (*font_attr);
 392         delete font_attr;
 393
 394         cairo_move_to (cr, 0, 0);
 395         cairo_rectangle (cr, 0, 0, width, height);
 396         {
 397                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 398                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 399         }
 400         cairo_fill (cr);
 401
 402         if (height > max_pattern_metric_size) {
 403                 cairo_move_to (cr, 0, max_pattern_metric_size + 1);
 404                 cairo_rectangle (cr, 0, max_pattern_metric_size, width, height - max_pattern_metric_size);
 405                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 406                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 407                 cairo_fill (cr);
 408         }
 409
 410         height = min(max_pattern_metric_size, height);
 411         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 412
 413         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 414
 415                 Gdk::Color c;
 416
 417                 if (types.size() > 1) {
 418                         /* we're overlaying more than 1 set of marks, so use different colours */
 419                         Gdk::Color c;
 420                         switch (*i) {
 421                         case DataType::AUDIO:
 422                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 423                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 424                                 break;
 425                         case DataType::MIDI:
 426                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 427                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 428                                 break;
 429                         }
 430                 } else {
 431                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 432                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 433                 }
 434
 435                 std::map<int,float> points;
 436
 437                 switch (*i) {
 438                 case DataType::AUDIO:
 439                         layout->set_attributes (audio_font_attributes);
 440                         points.insert (std::pair<int,float>(-50, 0.5));
 441                         points.insert (std::pair<int,float>(-40, 0.5));
 442                         points.insert (std::pair<int,float>(-30, 0.5));
 443                         points.insert (std::pair<int,float>(-25, 0.5));
 444                         points.insert (std::pair<int,float>(-20, 1.0));
 445                         points.insert (std::pair<int,float>(-18, 1.0));
 446                         points.insert (std::pair<int,float>(-15, 1.0));
 447                         points.insert (std::pair<int,float>(-10, 1.0));
 448                         points.insert (std::pair<int,float>( -5, 1.0));
 449                         points.insert (std::pair<int,float>( -3, 0.5));
 450                         points.insert (std::pair<int,float>(  0, 1.0));
 451                         points.insert (std::pair<int,float>(  3, 0.5));
 452                         break;
 453
 454                 case DataType::MIDI:
 455                         layout->set_attributes (midi_font_attributes);
 456                         points.insert (std::pair<int,float>(  0, 1.0));
 457                         if (types.size() == 1) {
 458                                 points.insert (std::pair<int,float>( 16, 0.5));
 459                                 points.insert (std::pair<int,float>( 32, 0.5));
 460                                 points.insert (std::pair<int,float>( 48, 0.5));
 461                                 points.insert (std::pair<int,float>( 64, 1.0));
 462                                 points.insert (std::pair<int,float>( 80, 0.5));
 463                                 points.insert (std::pair<int,float>( 96, 0.5));
 464                                 points.insert (std::pair<int,float>(100, 0.5));
 465                                 points.insert (std::pair<int,float>(112, 0.5));
 466                         } else {
 467                                 /* labels that don't overlay with dB */
 468                                 points.insert (std::pair<int,float>( 48, 0.5));
 469                                 points.insert (std::pair<int,float>( 72, 0.5));
 470                                 points.insert (std::pair<int,float>( 88, 0.5));
 471                         }
 472                         points.insert (std::pair<int,float>(127, 1.0));
 473                         break;
 474                 }
 475
 476                 char buf[32];
 477                 gint pos;
 478
 479                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 480
 481                         float fraction = 0;
 482                         switch (*i) {
 483                         case DataType::AUDIO:
 484                                 cairo_set_line_width (cr, (j->second));
 485                                 if (j->first >= 0) {
 486                                         cairo_set_source_rgb (cr,
 487                                                         UINT_RGBA_R_FLT(peakcolor),
 488                                                         UINT_RGBA_G_FLT(peakcolor),
 489                                                         UINT_RGBA_B_FLT(peakcolor));
 490                                 }
 491                                 fraction = log_meter (j->first);
 492                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 493                                 pos = height - (gint) floor (height * fraction);
 494                                 cairo_move_to(cr, width-2.5, pos + .5);
 495                                 cairo_line_to(cr, width, pos + .5);
 496                                 cairo_stroke (cr);
 497                                 break;
 498                         case DataType::MIDI:
 499                                 cairo_set_line_width (cr, 1.0);
 500                                 fraction = (j->first) / 127.0;
 501                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 502                                 pos = 1 + height - (gint) rintf (height * fraction);
 503                                 pos = min (pos, height);
 504                                 cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 505                                 cairo_fill(cr);
 506                                 break;
 507                         }
 508
 509                         layout->set_text(buf);
 510
 511                         /* we want logical extents, not ink extents here */
 512
 513                         int tw, th;
 514                         layout->get_pixel_size(tw, th);
 515
 516                         int p = pos - (th / 2);
 517                         p = min (p, height - th);
 518                         p = max (p, 0);
 519
 520                         cairo_move_to (cr, width-4-tw, p);
 521                         pango_cairo_show_layout (cr, layout->gobj());
 522                 }
 523         }
 524
 525         if (types.size() == 1) {
 526                 int tw, th;
 527                 layout->set_attributes (unit_font_attributes);
 528                 switch (types.at(0)) {
 529                         case DataType::AUDIO:
 530                                 layout->set_text("dBFS");
 531                                 layout->get_pixel_size(tw, th);
 532                                 break;
 533                         case DataType::MIDI:
 534                                 layout->set_text("vel");
 535                                 layout->get_pixel_size(tw, th);
 536                                 break;
 537                 }
 538                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 539                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 540                 cairo_move_to (cr, 1, height - th - 1.5);
 541                 pango_cairo_show_layout (cr, layout->gobj());
 542         }
 543
 544         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 545         MetricPatterns::iterator p;
 546
 547         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
 548                 cairo_pattern_destroy (p->second);
 549         }
 550
 551         metric_patterns[w.get_name()] = pattern;
 552
 553         cairo_destroy (cr);
 554         cairo_surface_destroy (surface);
 555
 556         return pattern;
 557 }
 558
 559 /* XXX code-copy from gain_meter.cc -- TODO consolidate */
 560 gint
 561 MeterStrip::meter_metrics_expose (GdkEventExpose *ev)
 562 {
 563         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 564         cairo_t* cr;
 565
 566         cr = gdk_cairo_create (win->gobj());
 567
 568         /* clip to expose area */
 569
 570         gdk_cairo_rectangle (cr, &ev->area);
 571         cairo_clip (cr);
 572
 573         cairo_pattern_t* pattern;
 574         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
 575
 576         if (i == metric_patterns.end()) {
 577                 pattern = render_metrics (meter_metric_area, _types);
 578         } else {
 579                 pattern = i->second;
 580         }
 581
 582         cairo_move_to (cr, 0, 0);
 583         cairo_set_source (cr, pattern);
 584
 585         gint width, height;
 586         win->get_size (width, height);
 587
 588         cairo_rectangle (cr, 0, 0, width, height);
 589         cairo_fill (cr);
 590
 591         cairo_destroy (cr);
 592
 593         return true;
 594 }
 595
 596 cairo_pattern_t*
 597 MeterStrip::render_ticks (Gtk::Widget& w, vector<DataType> types)
 598 {
 599         Glib::RefPtr<Gdk::Window> win (w.get_window());
 600
 601         gint width, height;
 602         win->get_size (width, height);
 603
 604         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 605         cairo_t* cr = cairo_create (surface);
 606
 607         cairo_move_to (cr, 0, 0);
 608         cairo_rectangle (cr, 0, 0, width, height);
 609         {
 610                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 611                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 612         }
 613         cairo_fill (cr);
 614
 615         if (height > max_pattern_metric_size) {
 616                 cairo_move_to (cr, 0, max_pattern_metric_size + 1);
 617                 cairo_rectangle (cr, 0, max_pattern_metric_size, width, height - max_pattern_metric_size);
 618                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 619                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 620                 cairo_fill (cr);
 621         }
 622
 623         height = min(max_pattern_metric_size, height);
 624         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 625
 626         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 627
 628                 Gdk::Color c;
 629                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 630
 631                 if (types.size() > 1) {
 632                         /* we're overlaying more than 1 set of marks, so use different colours */
 633                         switch (*i) {
 634                         case DataType::AUDIO:
 635                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 636                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 637                                 break;
 638                         case DataType::MIDI:
 639                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 640                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 641                                 break;
 642                         }
 643                 } else {
 644                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 645                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 646                 }
 647
 648                 std::map<int,float> points;
 649
 650                 switch (*i) {
 651                 case DataType::AUDIO:
 652                         points.insert (std::pair<int,float>(-60, 0.5));
 653                         points.insert (std::pair<int,float>(-50, 0.5));
 654                         points.insert (std::pair<int,float>(-40, 0.5));
 655                         points.insert (std::pair<int,float>(-30, 0.5));
 656                         points.insert (std::pair<int,float>(-25, 0.5));
 657                         points.insert (std::pair<int,float>(-20, 1.0));
 658
 659                         points.insert (std::pair<int,float>(-19, 0.5));
 660                         points.insert (std::pair<int,float>(-18, 1.0));
 661                         points.insert (std::pair<int,float>(-17, 0.5));
 662                         points.insert (std::pair<int,float>(-16, 0.5));
 663                         points.insert (std::pair<int,float>(-15, 1.0));
 664
 665                         points.insert (std::pair<int,float>(-14, 0.5));
 666                         points.insert (std::pair<int,float>(-13, 0.5));
 667                         points.insert (std::pair<int,float>(-12, 0.5));
 668                         points.insert (std::pair<int,float>(-11, 0.5));
 669                         points.insert (std::pair<int,float>(-10, 1.0));
 670
 671                         points.insert (std::pair<int,float>( -9, 0.5));
 672                         points.insert (std::pair<int,float>( -8, 0.5));
 673                         points.insert (std::pair<int,float>( -7, 0.5));
 674                         points.insert (std::pair<int,float>( -6, 0.5));
 675                         points.insert (std::pair<int,float>( -5, 1.0));
 676                         points.insert (std::pair<int,float>( -4, 0.5));
 677                         points.insert (std::pair<int,float>( -3, 0.5));
 678                         points.insert (std::pair<int,float>( -2, 0.5));
 679                         points.insert (std::pair<int,float>( -1, 0.5));
 680
 681                         points.insert (std::pair<int,float>(  0, 1.0));
 682                         points.insert (std::pair<int,float>(  1, 0.5));
 683                         points.insert (std::pair<int,float>(  2, 0.5));
 684                         points.insert (std::pair<int,float>(  3, 0.5));
 685                         points.insert (std::pair<int,float>(  4, 0.5));
 686                         points.insert (std::pair<int,float>(  5, 0.5));
 687                         break;
 688
 689                 case DataType::MIDI:
 690                         points.insert (std::pair<int,float>(  0, 1.0));
 691                         points.insert (std::pair<int,float>( 16, 0.5));
 692                         points.insert (std::pair<int,float>( 32, 0.5));
 693                         points.insert (std::pair<int,float>( 48, 0.5));
 694                         points.insert (std::pair<int,float>( 64, 1.0));
 695                         points.insert (std::pair<int,float>( 80, 0.5));
 696                         points.insert (std::pair<int,float>( 96, 0.5));
 697                         points.insert (std::pair<int,float>(100, 1.0));
 698                         points.insert (std::pair<int,float>(112, 0.5));
 699                         points.insert (std::pair<int,float>(127, 1.0));
 700                         break;
 701                 }
 702
 703                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 704                         cairo_set_line_width (cr, (j->second));
 705
 706                         float fraction = 0;
 707                         gint pos;
 708
 709                         switch (*i) {
 710                         case DataType::AUDIO:
 711                                 if (j->first >= 0 || j->first == -9) {
 712                                         cairo_set_source_rgb (cr,
 713                                                         UINT_RGBA_R_FLT(peakcolor),
 714                                                         UINT_RGBA_G_FLT(peakcolor),
 715                                                         UINT_RGBA_B_FLT(peakcolor));
 716                                 } else {
 717                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 718                                 }
 719                                 fraction = log_meter (j->first);
 720                                 pos = height - (gint) floor (height * fraction);
 721                                 cairo_move_to(cr, 0, pos + .5);
 722                                 cairo_line_to(cr, 3, pos + .5);
 723                                 cairo_stroke (cr);
 724                                 break;
 725                         case DataType::MIDI:
 726                                 fraction = (j->first) / 127.0;
 727                                 pos = 1 + height - (gint) floor (height * fraction);
 728                                 pos = min (pos, height);
 729                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 730                                 cairo_fill(cr);
 731                                 break;
 732                         }
 733                 }
 734         }
 735
 736         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 737         TickPatterns::iterator p;
 738
 739         if ((p = ticks_patterns.find (w.get_name())) != metric_patterns.end()) {
 740                 cairo_pattern_destroy (p->second);
 741         }
 742
 743         ticks_patterns[w.get_name()] = pattern;
 744
 745         cairo_destroy (cr);
 746         cairo_surface_destroy (surface);
 747
 748         return pattern;
 749 }
 750
 751 gint
 752 MeterStrip::meter_ticks1_expose (GdkEventExpose *ev)
 753 {
 754         return meter_ticks_expose(ev, &meter_ticks1_area);
 755 }
 756
 757 gint
 758 MeterStrip::meter_ticks2_expose (GdkEventExpose *ev)
 759 {
 760         return meter_ticks_expose(ev, &meter_ticks2_area);
 761 }
 762
 763 gint
 764 MeterStrip::meter_ticks_expose (GdkEventExpose *ev, Gtk::DrawingArea *mta)
 765 {
 766         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 767         cairo_t* cr;
 768
 769         cr = gdk_cairo_create (win->gobj());
 770
 771         /* clip to expose area */
 772
 773         gdk_cairo_rectangle (cr, &ev->area);
 774         cairo_clip (cr);
 775
 776         cairo_pattern_t* pattern;
 777         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 778
 779         if (i == ticks_patterns.end()) {
 780                 pattern = render_ticks (*mta, _types);
 781         } else {
 782                 pattern = i->second;
 783         }
 784
 785         cairo_move_to (cr, 0, 0);
 786         cairo_set_source (cr, pattern);
 787
 788         gint width, height;
 789         win->get_size (width, height);
 790
 791         cairo_rectangle (cr, 0, 0, width, height);
 792         cairo_fill (cr);
 793
 794         cairo_destroy (cr);
 795
 796         return true;
 797 }
 798
 799 void
 800 MeterStrip::reset_group_peak_display (RouteGroup* group)
 801 {
 802         /* UNUSED -- need connection w/mixer || other meters */
 803         if (_route && group == _route->route_group()) {
 804                 reset_peak_display ();
 805         }
 806 }
 807
 808 void
 809 MeterStrip::reset_peak_display ()
 810 {
 811         _route->shared_peak_meter()->reset_max();
 812         level_meter->clear_meters();
 813         max_peak = -INFINITY;
 814         peak_display.set_name ("meterbridge peakindicator");
 815         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 816 }
 817
 818 bool
 819 MeterStrip::peak_button_release (GdkEventButton* ev)
 820 {
 821         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 822                 ResetAllPeakDisplays ();
 823         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 824                 if (_route) {
 825                         ResetGroupPeakDisplays (_route->route_group());
 826                 }
 827         } else {
 828                 reset_peak_display ();
 829         }
 830         return true;
 831 }