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 int MeterStrip::max_pattern_metric_size = 1026; // +2 border
  59
  60 MeterStrip::MeterStrip (int metricmode)
  61         : AxisView(0)
  62         , RouteUI(0)
  63 {
  64         level_meter = 0;
  65         set_spacing(2);
  66         peakbx.set_size_request(-1, 14);
  67         btnbox.set_size_request(-1, 16);
  68         namebx.set_size_request(18, 52);
  69
  70         _types.clear ();
  71         switch(metricmode) {
  72                 case 1:
  73                         meter_metric_area.set_name ("AudioBusMetrics");
  74                         _types.push_back (DataType::AUDIO);
  75                         break;
  76                 case 2:
  77                         meter_metric_area.set_name ("AudioTrackMetrics");
  78                         _types.push_back (DataType::AUDIO);
  79                         break;
  80                 case 3:
  81                         meter_metric_area.set_name ("MidiTrackMetrics");
  82                         _types.push_back (DataType::MIDI);
  83                         break;
  84                 default:
  85                         meter_metric_area.set_name ("AudioMidiTrackMetrics");
  86                         _types.push_back (DataType::AUDIO);
  87                         _types.push_back (DataType::MIDI);
  88                         break;
  89         }
  90         //meter_metric_area.queue_draw ();
  91
  92         set_size_request_to_display_given_text (meter_metric_area, "-8888", 1, 0);
  93         meter_metric_area.signal_expose_event().connect (
  94                         sigc::mem_fun(*this, &MeterStrip::meter_metrics_expose));
  95
  96         meterbox.pack_start(meter_metric_area, true, false);
  97
  98         pack_start (peakbx, false, false);
  99         pack_start (meterbox, true, true);
 100         pack_start (btnbox, false, false);
 101         pack_start (namebx, false, false);
 102
 103         peakbx.show();
 104         btnbox.show();
 105         meter_metric_area.show();
 106         meterbox.show();
 107         namebx.show();
 108
 109         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &MeterStrip::on_theme_changed));
 110         ColorsChanged.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 111         DPIReset.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 112 }
 113
 114 MeterStrip::MeterStrip (Session* sess, boost::shared_ptr<ARDOUR::Route> rt)
 115         : AxisView(sess)
 116         , RouteUI(sess)
 117         , _route(rt)
 118         , peak_display()
 119 {
 120         set_spacing(2);
 121         RouteUI::set_route (rt);
 122
 123         int meter_width = 6;
 124         if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 125                 meter_width = 12;
 126         }
 127
 128         // level meter + ticks
 129         level_meter = new LevelMeter(sess);
 130         level_meter->set_meter (_route->shared_peak_meter().get());
 131         level_meter->clear_meters();
 132         level_meter->setup_meters (220, meter_width, 6);
 133
 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         peak_align.set(0.5, 1.0, 1.0, 0.8);
 150         peak_align.add(peak_display);
 151         peakbx.pack_start(peak_align, true, true, 3);
 152         peakbx.set_size_request(-1, 14);
 153
 154         // add track-name label
 155         name_label.set_text(_route->name().c_str());
 156         name_label.set_corner_radius(2);
 157         name_label.set_name("solo isolate"); // XXX re-use 'very_small_text'
 158         name_label.set_angle(-90.0);
 159         name_label.layout()->set_ellipsize (Pango::ELLIPSIZE_END);
 160         name_label.layout()->set_width(48 * PANGO_SCALE);
 161         name_label.set_size_request(18, 50);
 162
 163         namebx.set_size_request(18, 52);
 164         namebx.pack_start(name_label, true, false, 3);
 165
 166         // rec-enable button
 167         btnbox.pack_start(*rec_enable_button, true, false);
 168         rec_enable_button->set_corner_radius(2);
 169         btnbox.set_size_request(-1, 16);
 170
 171         pack_start (peakbx, false, false);
 172         pack_start (meterbox, true, true);
 173         pack_start (btnbox, false, false);
 174         pack_start (namebx, false, false);
 175
 176         peak_display.show();
 177         peakbx.show();
 178         meter_ticks1_area.show();
 179         meter_ticks2_area.show();
 180         meterbox.show();
 181         level_meter->show();
 182         meter_align.show();
 183         peak_align.show();
 184         btnbox.show();
 185         name_label.show();
 186         namebx.show();
 187
 188         _route->shared_peak_meter()->ConfigurationChanged.connect (
 189                         route_connections, invalidator (*this), boost::bind (&MeterStrip::meter_configuration_changed, this, _1), gui_context()
 190                         );
 191         meter_configuration_changed (_route->shared_peak_meter()->input_streams ());
 192
 193         meter_ticks1_area.set_size_request(3,-1);
 194         meter_ticks2_area.set_size_request(3,-1);
 195         meter_ticks1_area.signal_expose_event().connect (sigc::mem_fun(*this, &MeterStrip::meter_ticks1_expose));
 196         meter_ticks2_area.signal_expose_event().connect (sigc::mem_fun(*this, &MeterStrip::meter_ticks2_expose));
 197
 198         _route->DropReferences.connect (route_connections, invalidator (*this), boost::bind (&MeterStrip::self_delete, this), gui_context());
 199         _route->PropertyChanged.connect (route_connections, invalidator (*this), boost::bind (&MeterStrip::strip_property_changed, this, _1), gui_context());
 200
 201         peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &MeterStrip::peak_button_release), false);
 202
 203         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &MeterStrip::on_theme_changed));
 204         ColorsChanged.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 205         DPIReset.connect (sigc::mem_fun (*this, &MeterStrip::on_theme_changed));
 206 }
 207
 208 MeterStrip::~MeterStrip ()
 209 {
 210         delete level_meter;
 211         CatchDeletion (this);
 212 }
 213
 214 void
 215 MeterStrip::self_delete ()
 216 {
 217         delete this;
 218 }
 219
 220 void
 221 MeterStrip::update_rec_display ()
 222 {
 223         RouteUI::update_rec_display ();
 224 }
 225
 226 std::string
 227 MeterStrip::state_id() const
 228 {
 229         return string_compose ("mtrs %1", _route->id().to_s());
 230 }
 231
 232 void
 233 MeterStrip::set_button_names()
 234 {
 235         rec_enable_button->set_text ("");
 236         rec_enable_button->set_image (::get_icon (X_("record_normal_red")));
 237 }
 238
 239 void
 240 MeterStrip::strip_property_changed (const PropertyChange& what_changed)
 241 {
 242         if (!what_changed.contains (ARDOUR::Properties::name)) {
 243                 return;
 244         }
 245         ENSURE_GUI_THREAD (*this, &MeterStrip::strip_name_changed, what_changed)
 246         name_label.set_text(_route->name());
 247 }
 248
 249 void
 250 MeterStrip::fast_update ()
 251 {
 252         float mpeak = level_meter->update_meters();
 253         if (mpeak > max_peak) {
 254                 max_peak = mpeak;
 255                 if (mpeak >= 0.0f) {
 256                         peak_display.set_name ("meterbridge peakindicator on");
 257                         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 258                 }
 259         }
 260 }
 261
 262 void
 263 MeterStrip::on_theme_changed()
 264 {
 265         metric_patterns.clear();
 266         ticks_patterns.clear();
 267
 268         if (level_meter && _route) {
 269                 int meter_width = 6;
 270                 if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 271                         meter_width = 12;
 272                 }
 273                 level_meter->setup_meters (220, meter_width, 6);
 274         }
 275         meter_metric_area.queue_draw();
 276         meter_ticks1_area.queue_draw();
 277         meter_ticks2_area.queue_draw();
 278 }
 279
 280 void
 281 MeterStrip::meter_configuration_changed (ChanCount c)
 282 {
 283         int type = 0;
 284         _types.clear ();
 285
 286         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 287                 if (c.get (*i) > 0) {
 288                         _types.push_back (*i);
 289                         type |= 1 << (*i);
 290                 }
 291         }
 292
 293         // TODO draw Inactive routes or busses with different styles
 294         if (boost::dynamic_pointer_cast<AudioTrack>(_route) == 0
 295                         && boost::dynamic_pointer_cast<MidiTrack>(_route) == 0
 296                         ) {
 297                 meter_ticks1_area.set_name ("AudioBusMetrics");
 298                 meter_ticks2_area.set_name ("AudioBusMetrics");
 299         }
 300         else if (type == (1 << DataType::AUDIO)) {
 301                 meter_ticks1_area.set_name ("AudioTrackMetrics");
 302                 meter_ticks2_area.set_name ("AudioTrackMetrics");
 303         }
 304         else if (type == (1 << DataType::MIDI)) {
 305                 meter_ticks1_area.set_name ("MidiTrackMetrics");
 306                 meter_ticks2_area.set_name ("MidiTrackMetrics");
 307         } else {
 308                 meter_ticks1_area.set_name ("AudioMidiTrackMetrics");
 309                 meter_ticks2_area.set_name ("AudioMidiTrackMetrics");
 310         }
 311
 312         on_theme_changed();
 313 }
 314
 315 void
 316 MeterStrip::on_size_request (Gtk::Requisition* r)
 317 {
 318         metric_patterns.clear();
 319         ticks_patterns.clear();
 320         VBox::on_size_request(r);
 321 }
 322
 323 void
 324 MeterStrip::on_size_allocate (Gtk::Allocation& a)
 325 {
 326         metric_patterns.clear();
 327         ticks_patterns.clear();
 328         const int wh = a.get_height();
 329         int nh = ceilf(wh * .11f);
 330         if (nh < 52) nh = 52;
 331         if (nh > 148) nh = 148;
 332         namebx.set_size_request(18, nh);
 333         if (_route) {
 334                 name_label.set_size_request(18, nh-2);
 335                 name_label.layout()->set_width((nh-4) * PANGO_SCALE);
 336         }
 337         VBox::on_size_allocate(a);
 338 }
 339
 340 /* XXX code-copy from gain_meter.cc -- TODO consolidate
 341  *
 342  * slightly different:
 343  *  - ticks & label positions are swapped
 344  *  - more ticks for audio (longer meter by default)
 345  *  - right-aligned lables, unit-legend
 346  *  - height limitation of FastMeter::max_pattern_metric_size is included here
 347  */
 348 cairo_pattern_t*
 349 MeterStrip::render_metrics (Gtk::Widget& w, vector<DataType> types)
 350 {
 351         Glib::RefPtr<Gdk::Window> win (w.get_window());
 352
 353         gint width, height;
 354         win->get_size (width, height);
 355
 356         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 357         cairo_t* cr = cairo_create (surface);
 358         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 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         if (height > max_pattern_metric_size) {
 398                 cairo_move_to (cr, 0, max_pattern_metric_size + 1);
 399                 cairo_rectangle (cr, 0, max_pattern_metric_size, width, height - max_pattern_metric_size);
 400                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 401                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 402                 cairo_fill (cr);
 403         }
 404
 405         height = min(max_pattern_metric_size, height);
 406         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 407
 408         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 409
 410                 Gdk::Color c;
 411
 412                 if (types.size() > 1) {
 413                         /* we're overlaying more than 1 set of marks, so use different colours */
 414                         Gdk::Color c;
 415                         switch (*i) {
 416                         case DataType::AUDIO:
 417                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 418                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 419                                 break;
 420                         case DataType::MIDI:
 421                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 422                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 423                                 break;
 424                         }
 425                 } else {
 426                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 427                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 428                 }
 429
 430                 std::map<int,float> points;
 431
 432                 switch (*i) {
 433                 case DataType::AUDIO:
 434                         layout->set_attributes (audio_font_attributes);
 435                         points.insert (std::pair<int,float>(-50, 0.5));
 436                         points.insert (std::pair<int,float>(-40, 0.5));
 437                         points.insert (std::pair<int,float>(-30, 0.5));
 438                         points.insert (std::pair<int,float>(-25, 0.5));
 439                         points.insert (std::pair<int,float>(-20, 1.0));
 440                         points.insert (std::pair<int,float>(-18, 1.0));
 441                         points.insert (std::pair<int,float>(-15, 1.0));
 442                         points.insert (std::pair<int,float>(-10, 1.0));
 443                         points.insert (std::pair<int,float>( -5, 1.0));
 444                         points.insert (std::pair<int,float>( -3, 0.5));
 445                         points.insert (std::pair<int,float>(  0, 1.0));
 446                         points.insert (std::pair<int,float>(  3, 0.5));
 447                         break;
 448
 449                 case DataType::MIDI:
 450                         layout->set_attributes (midi_font_attributes);
 451                         points.insert (std::pair<int,float>(  0, 1.0));
 452                         if (types.size() == 1) {
 453                                 points.insert (std::pair<int,float>( 16, 0.5));
 454                                 points.insert (std::pair<int,float>( 32, 0.5));
 455                                 points.insert (std::pair<int,float>( 48, 0.5));
 456                                 points.insert (std::pair<int,float>( 64, 1.0));
 457                                 points.insert (std::pair<int,float>( 80, 0.5));
 458                                 points.insert (std::pair<int,float>( 96, 0.5));
 459                                 points.insert (std::pair<int,float>(100, 0.5));
 460                                 points.insert (std::pair<int,float>(112, 0.5));
 461                         } else {
 462                                 /* labels that don't overlay with dB */
 463                                 points.insert (std::pair<int,float>( 48, 0.5));
 464                                 points.insert (std::pair<int,float>( 72, 0.5));
 465                                 points.insert (std::pair<int,float>( 88, 0.5));
 466                         }
 467                         points.insert (std::pair<int,float>(127, 1.0));
 468                         break;
 469                 }
 470
 471                 char buf[32];
 472                 gint pos;
 473
 474                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 475
 476                         float fraction = 0;
 477                         switch (*i) {
 478                         case DataType::AUDIO:
 479                                 cairo_set_line_width (cr, (j->second));
 480                                 if (j->first >= 0) {
 481                                         cairo_set_source_rgb (cr,
 482                                                         UINT_RGBA_R_FLT(peakcolor),
 483                                                         UINT_RGBA_G_FLT(peakcolor),
 484                                                         UINT_RGBA_B_FLT(peakcolor));
 485                                 }
 486                                 fraction = log_meter (j->first);
 487                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 488                                 pos = 1 + height - (gint) floor (height * fraction);
 489                                 cairo_move_to(cr, width-2.5, pos + .5);
 490                                 cairo_line_to(cr, width, pos + .5);
 491                                 cairo_stroke (cr);
 492                                 break;
 493                         case DataType::MIDI:
 494                                 cairo_set_line_width (cr, 1.0);
 495                                 fraction = (j->first) / 127.0;
 496                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 497                                 pos = 1 + height - (gint) rintf (height * fraction);
 498                                 pos = min (pos, height);
 499                                 cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 500                                 cairo_fill(cr);
 501                                 break;
 502                         }
 503
 504                         layout->set_text(buf);
 505
 506                         /* we want logical extents, not ink extents here */
 507
 508                         int tw, th;
 509                         layout->get_pixel_size(tw, th);
 510
 511                         int p = pos - (th / 2);
 512                         p = min (p, height - th);
 513                         p = max (p, 0);
 514
 515                         cairo_move_to (cr, width-4-tw, p);
 516                         pango_cairo_show_layout (cr, layout->gobj());
 517                 }
 518         }
 519
 520         if (types.size() == 1) {
 521                 int tw, th;
 522                 layout->set_attributes (unit_font_attributes);
 523                 switch (types.at(0)) {
 524                         case DataType::AUDIO:
 525                                 layout->set_text("dBFS");
 526                                 layout->get_pixel_size(tw, th);
 527                                 break;
 528                         case DataType::MIDI:
 529                                 layout->set_text("vel");
 530                                 layout->get_pixel_size(tw, th);
 531                                 break;
 532                 }
 533                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 534                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 535                 cairo_move_to (cr, 1, height - th - 1.5);
 536                 pango_cairo_show_layout (cr, layout->gobj());
 537         }
 538
 539         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 540         MetricPatterns::iterator p;
 541
 542         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
 543                 cairo_pattern_destroy (p->second);
 544         }
 545
 546         metric_patterns[w.get_name()] = pattern;
 547
 548         cairo_destroy (cr);
 549         cairo_surface_destroy (surface);
 550
 551         return pattern;
 552 }
 553
 554 /* XXX code-copy from gain_meter.cc -- TODO consolidate */
 555 gint
 556 MeterStrip::meter_metrics_expose (GdkEventExpose *ev)
 557 {
 558         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 559         cairo_t* cr;
 560
 561         cr = gdk_cairo_create (win->gobj());
 562
 563         /* clip to expose area */
 564
 565         gdk_cairo_rectangle (cr, &ev->area);
 566         cairo_clip (cr);
 567
 568         cairo_pattern_t* pattern;
 569         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
 570
 571         if (i == metric_patterns.end()) {
 572                 pattern = render_metrics (meter_metric_area, _types);
 573         } else {
 574                 pattern = i->second;
 575         }
 576
 577         cairo_move_to (cr, 0, 0);
 578         cairo_set_source (cr, pattern);
 579
 580         gint width, height;
 581         win->get_size (width, height);
 582
 583         cairo_rectangle (cr, 0, 0, width, height);
 584         cairo_fill (cr);
 585
 586         cairo_destroy (cr);
 587
 588         return true;
 589 }
 590
 591 cairo_pattern_t*
 592 MeterStrip::render_ticks (Gtk::Widget& w, vector<DataType> types)
 593 {
 594         Glib::RefPtr<Gdk::Window> win (w.get_window());
 595
 596         gint width, height;
 597         win->get_size (width, height);
 598
 599         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 600         cairo_t* cr = cairo_create (surface);
 601
 602         cairo_move_to (cr, 0, 0);
 603         cairo_rectangle (cr, 0, 0, width, height);
 604         {
 605                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 606                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 607         }
 608         cairo_fill (cr);
 609
 610         if (height > max_pattern_metric_size) {
 611                 cairo_move_to (cr, 0, max_pattern_metric_size + 1);
 612                 cairo_rectangle (cr, 0, max_pattern_metric_size, width, height - max_pattern_metric_size);
 613                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 614                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 615                 cairo_fill (cr);
 616         }
 617
 618         height = min(max_pattern_metric_size, height);
 619         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 620
 621         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 622
 623                 Gdk::Color c;
 624                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 625
 626                 if (types.size() > 1) {
 627                         /* we're overlaying more than 1 set of marks, so use different colours */
 628                         switch (*i) {
 629                         case DataType::AUDIO:
 630                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 631                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 632                                 break;
 633                         case DataType::MIDI:
 634                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 635                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 636                                 break;
 637                         }
 638                 } else {
 639                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 640                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 641                 }
 642
 643                 std::map<int,float> points;
 644
 645                 switch (*i) {
 646                 case DataType::AUDIO:
 647                         points.insert (std::pair<int,float>(-60, 0.5));
 648                         points.insert (std::pair<int,float>(-50, 0.5));
 649                         points.insert (std::pair<int,float>(-40, 0.5));
 650                         points.insert (std::pair<int,float>(-30, 0.5));
 651                         points.insert (std::pair<int,float>(-25, 0.5));
 652                         points.insert (std::pair<int,float>(-20, 1.0));
 653
 654                         points.insert (std::pair<int,float>(-19, 0.5));
 655                         points.insert (std::pair<int,float>(-18, 1.0));
 656                         points.insert (std::pair<int,float>(-17, 0.5));
 657                         points.insert (std::pair<int,float>(-16, 0.5));
 658                         points.insert (std::pair<int,float>(-15, 1.0));
 659
 660                         points.insert (std::pair<int,float>(-14, 0.5));
 661                         points.insert (std::pair<int,float>(-13, 0.5));
 662                         points.insert (std::pair<int,float>(-12, 0.5));
 663                         points.insert (std::pair<int,float>(-11, 0.5));
 664                         points.insert (std::pair<int,float>(-10, 1.0));
 665
 666                         points.insert (std::pair<int,float>( -9, 0.5));
 667                         points.insert (std::pair<int,float>( -8, 0.5));
 668                         points.insert (std::pair<int,float>( -7, 0.5));
 669                         points.insert (std::pair<int,float>( -6, 0.5));
 670                         points.insert (std::pair<int,float>( -5, 1.0));
 671                         points.insert (std::pair<int,float>( -4, 0.5));
 672                         points.insert (std::pair<int,float>( -3, 0.5));
 673                         points.insert (std::pair<int,float>( -2, 0.5));
 674                         points.insert (std::pair<int,float>( -1, 0.5));
 675
 676                         points.insert (std::pair<int,float>(  0, 1.0));
 677                         points.insert (std::pair<int,float>(  1, 0.5));
 678                         points.insert (std::pair<int,float>(  2, 0.5));
 679                         points.insert (std::pair<int,float>(  3, 0.5));
 680                         points.insert (std::pair<int,float>(  4, 0.5));
 681                         points.insert (std::pair<int,float>(  5, 0.5));
 682                         break;
 683
 684                 case DataType::MIDI:
 685                         points.insert (std::pair<int,float>(  0, 1.0));
 686                         points.insert (std::pair<int,float>( 16, 0.5));
 687                         points.insert (std::pair<int,float>( 32, 0.5));
 688                         points.insert (std::pair<int,float>( 48, 0.5));
 689                         points.insert (std::pair<int,float>( 64, 1.0));
 690                         points.insert (std::pair<int,float>( 80, 0.5));
 691                         points.insert (std::pair<int,float>( 96, 0.5));
 692                         points.insert (std::pair<int,float>(100, 1.0));
 693                         points.insert (std::pair<int,float>(112, 0.5));
 694                         points.insert (std::pair<int,float>(127, 1.0));
 695                         break;
 696                 }
 697
 698                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 699                         cairo_set_line_width (cr, (j->second));
 700
 701                         float fraction = 0;
 702                         gint pos;
 703
 704                         switch (*i) {
 705                         case DataType::AUDIO:
 706                                 if (j->first >= 0 || j->first == -9) {
 707                                         cairo_set_source_rgb (cr,
 708                                                         UINT_RGBA_R_FLT(peakcolor),
 709                                                         UINT_RGBA_G_FLT(peakcolor),
 710                                                         UINT_RGBA_B_FLT(peakcolor));
 711                                 } else {
 712                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 713                                 }
 714                                 fraction = log_meter (j->first);
 715                                 pos = 1 + height - (gint) floor (height * fraction);
 716                                 cairo_move_to(cr, 0, pos + .5);
 717                                 cairo_line_to(cr, 3, pos + .5);
 718                                 cairo_stroke (cr);
 719                                 break;
 720                         case DataType::MIDI:
 721                                 fraction = (j->first) / 127.0;
 722                                 pos = 1 + height - (gint) floor (height * fraction);
 723                                 pos = min (pos, height);
 724                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 725                                 cairo_fill(cr);
 726                                 break;
 727                         }
 728                 }
 729         }
 730
 731         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 732         TickPatterns::iterator p;
 733
 734         if ((p = ticks_patterns.find (w.get_name())) != metric_patterns.end()) {
 735                 cairo_pattern_destroy (p->second);
 736         }
 737
 738         ticks_patterns[w.get_name()] = pattern;
 739
 740         cairo_destroy (cr);
 741         cairo_surface_destroy (surface);
 742
 743         return pattern;
 744 }
 745
 746 gint
 747 MeterStrip::meter_ticks1_expose (GdkEventExpose *ev)
 748 {
 749         return meter_ticks_expose(ev, &meter_ticks1_area);
 750 }
 751
 752 gint
 753 MeterStrip::meter_ticks2_expose (GdkEventExpose *ev)
 754 {
 755         return meter_ticks_expose(ev, &meter_ticks2_area);
 756 }
 757
 758 gint
 759 MeterStrip::meter_ticks_expose (GdkEventExpose *ev, Gtk::DrawingArea *mta)
 760 {
 761         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 762         cairo_t* cr;
 763
 764         cr = gdk_cairo_create (win->gobj());
 765
 766         /* clip to expose area */
 767
 768         gdk_cairo_rectangle (cr, &ev->area);
 769         cairo_clip (cr);
 770
 771         cairo_pattern_t* pattern;
 772         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 773
 774         if (i == ticks_patterns.end()) {
 775                 pattern = render_ticks (*mta, _types);
 776         } else {
 777                 pattern = i->second;
 778         }
 779
 780         cairo_move_to (cr, 0, 0);
 781         cairo_set_source (cr, pattern);
 782
 783         gint width, height;
 784         win->get_size (width, height);
 785
 786         cairo_rectangle (cr, 0, 0, width, height);
 787         cairo_fill (cr);
 788
 789         cairo_destroy (cr);
 790
 791         return true;
 792 }
 793
 794 void
 795 MeterStrip::reset_group_peak_display (RouteGroup* group)
 796 {
 797         /* UNUSED -- need connection w/mixer || other meters */
 798         if (_route && group == _route->route_group()) {
 799                 reset_peak_display ();
 800         }
 801 }
 802
 803 void
 804 MeterStrip::reset_peak_display ()
 805 {
 806         _route->shared_peak_meter()->reset_max();
 807         level_meter->clear_meters();
 808         max_peak = -INFINITY;
 809         peak_display.set_name ("meterbridge peakindicator");
 810         peak_display.set_elements((ArdourButton::Element) (ArdourButton::Edge|ArdourButton::Body));
 811 }
 812
 813 bool
 814 MeterStrip::peak_button_release (GdkEventButton* ev)
 815 {
 816         reset_peak_display ();
 817         return true;
 818 }