gtk2_ardour/meter_patterns.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 <gtkmm2ext/cairo_widget.h>
  21 #include <gtkmm2ext/gtk_ui.h>
  22 #include <gtkmm2ext/utils.h>
  23 #include <gtkmm2ext/rgb_macros.h>
  24
  25 #include <ardour/rc_configuration.h>
  26 #include "ardour_ui.h"
  27 #include "utils.h"
  28 #include "logmeter.h"
  29 #include "meter_patterns.h"
  30
  31 #include "i18n.h"
  32
  33 using namespace ARDOUR;
  34 using namespace PBD;
  35 using namespace Gtk;
  36 using namespace Gtkmm2ext;
  37 using namespace std;
  38 using namespace ArdourMeter;
  39
  40 static const int max_pattern_metric_size = 1026;
  41
  42 /* signals used by meters */
  43
  44 sigc::signal<void> ArdourMeter::ResetAllPeakDisplays;
  45 sigc::signal<void,ARDOUR::Route*> ArdourMeter::ResetRoutePeakDisplays;
  46 sigc::signal<void,ARDOUR::RouteGroup*> ArdourMeter::ResetGroupPeakDisplays;
  47 sigc::signal<void> ArdourMeter::RedrawMetrics;
  48
  49 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> ArdourMeter::SetMeterTypeMulti;
  50
  51
  52 /* pattern cache */
  53
  54 struct MeterMatricsMapKey {
  55         MeterMatricsMapKey (std::string n, MeterType t)
  56                 : _n(n)
  57                 , _t(t)
  58         {}
  59         inline bool operator<(const MeterMatricsMapKey& rhs) const {
  60                 return (_n < rhs._n) || (_n == rhs._n && _t < rhs._t);
  61         }
  62         std::string _n;
  63         MeterType _t;
  64 };
  65
  66 namespace ArdourMeter {
  67         typedef std::map<MeterMatricsMapKey, cairo_pattern_t*> MetricPatternMap;
  68 }
  69
  70 static ArdourMeter::MetricPatternMap ticks_patterns;
  71 static ArdourMeter::MetricPatternMap metric_patterns;
  72
  73
  74 const std::string
  75 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
  76 {
  77         switch (mt) {
  78                 case MeterPeak:
  79                         return _("Peak");
  80                         break;
  81                 case MeterKrms:
  82                         return _("RMS + Peak");
  83                         break;
  84                 case MeterIEC1DIN:
  85                         return _("IEC1/DIN");
  86                         break;
  87                 case MeterIEC1NOR:
  88                         return _("IEC1/Nordic");
  89                         break;
  90                 case MeterIEC2BBC:
  91                         return _("IEC2/BBC");
  92                         break;
  93                 case MeterIEC2EBU:
  94                         return _("IEC2/EBU");
  95                         break;
  96                 case MeterK20:
  97                         return _("K20");
  98                         break;
  99                 case MeterK14:
 100                         return _("K14");
 101                         break;
 102                 case MeterVU:
 103                         return _("VU");
 104                         break;
 105                 default:
 106                         return _("???");
 107                         break;
 108         }
 109 }
 110
 111 static inline float mtr_col_and_fract(
 112                 cairo_t* cr, Gdk::Color const * const c, const uint32_t peakcolor, const MeterType mt, const float val)
 113 {
 114         float fraction = 0;
 115
 116         switch (mt) {
 117                 default:
 118                 case MeterKrms:
 119                 case MeterPeak:
 120                         fraction = log_meter (val);
 121                         if (val >= 0 || val == -9) {
 122                                 cairo_set_source_rgb (cr,
 123                                                 UINT_RGBA_R_FLT(peakcolor),
 124                                                 UINT_RGBA_G_FLT(peakcolor),
 125                                                 UINT_RGBA_B_FLT(peakcolor));
 126                         } else {
 127                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 128                         }
 129                         break;
 130                 case MeterIEC2BBC:
 131                         fraction = meter_deflect_ppm(val);
 132                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 133                         break;
 134                 case MeterIEC2EBU:
 135                         fraction = meter_deflect_ppm(val);
 136                         if (val >= -10.0) {
 137                                 cairo_set_source_rgb (cr,
 138                                                 UINT_RGBA_R_FLT(peakcolor),
 139                                                 UINT_RGBA_G_FLT(peakcolor),
 140                                                 UINT_RGBA_B_FLT(peakcolor));
 141                         } else {
 142                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 143                         }
 144                         break;
 145                 case MeterIEC1NOR:
 146                         fraction = meter_deflect_nordic(val);
 147                         if (val >= -12.0) {
 148                                 cairo_set_source_rgb (cr,
 149                                                 UINT_RGBA_R_FLT(peakcolor),
 150                                                 UINT_RGBA_G_FLT(peakcolor),
 151                                                 UINT_RGBA_B_FLT(peakcolor));
 152                         } else {
 153                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 154                         }
 155                         break;
 156                 case MeterIEC1DIN:
 157                         fraction = meter_deflect_din(val);
 158                         if (val >= -9.0) {
 159                                 cairo_set_source_rgb (cr,
 160                                                 UINT_RGBA_R_FLT(peakcolor),
 161                                                 UINT_RGBA_G_FLT(peakcolor),
 162                                                 UINT_RGBA_B_FLT(peakcolor));
 163                         } else {
 164                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 165                         }
 166                         break;
 167                 case MeterVU:
 168                         fraction = meter_deflect_vu(val);
 169                         if (val >= -20.0) {
 170                                 cairo_set_source_rgb (cr,
 171                                                 UINT_RGBA_R_FLT(peakcolor),
 172                                                 UINT_RGBA_G_FLT(peakcolor),
 173                                                 UINT_RGBA_B_FLT(peakcolor));
 174                         } else {
 175                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 176                         }
 177                         break;
 178                 case MeterK20:
 179                         fraction = meter_deflect_k (val, 20);
 180                         if (val >= -16.0) {
 181                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 182                         } else if (val >= -20.0) {
 183                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 184                         } else {
 185                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 186                         }
 187                         break;
 188                 case MeterK14:
 189                         if (val >= -10.0) {
 190                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 191                         } else if (val >= -14.0) {
 192                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 193                         } else {
 194                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 195                         }
 196                         fraction = meter_deflect_k (val, 14);
 197                         break;
 198         }
 199         return fraction;
 200 }
 201
 202 static void set_bg_color(Gtk::Widget& w, cairo_t* cr, MeterType type) {
 203         // TODO use "meterstrip*" stype
 204         switch(type) {
 205                 case MeterVU:
 206                         cairo_set_source_rgb (cr, 1.0, 1.0, 0.85);
 207                         break;
 208                 case MeterIEC1DIN:
 209                 case MeterIEC1NOR:
 210                 case MeterIEC2BBC:
 211                 case MeterIEC2EBU:
 212                 case MeterK14:
 213                 case MeterK20:
 214                         cairo_set_source_rgb (cr, 0.1, 0.1, 0.1);
 215                         break;
 216                 default:
 217                         {
 218                         Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 219                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 220                         }
 221                         break;
 222         }
 223 }
 224
 225 static void set_fg_color(Gtk::Widget& w, MeterType type, Gdk::Color * c) {
 226         // TODO use "meterstrip*" stype
 227         switch(type) {
 228                 case MeterVU:
 229                         c->set_rgb_p(0.0, 0.0, 0.0);
 230                         break;
 231                 default:
 232                         c->set_rgb_p(1.0, 1.0, 1.0);
 233                         break;
 234         }
 235 }
 236
 237 static cairo_pattern_t*
 238 meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
 239 {
 240         Glib::RefPtr<Gdk::Window> win (w.get_window());
 241
 242         bool background;
 243         gint width, height;
 244         win->get_size (width, height);
 245         background = types.size() == 0
 246                 || w.get_name().substr(w.get_name().length() - 4) == "Left"
 247                 || w.get_name().substr(w.get_name().length() - 5) == "Right";
 248
 249         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 250         cairo_t* cr = cairo_create (surface);
 251
 252         cairo_move_to (cr, 0, 0);
 253         cairo_rectangle (cr, 0, 0, width, height);
 254
 255         if (background) {
 256                 /* meterbridge */
 257                 set_bg_color(w, cr, type);
 258         } else {
 259                 /* mixer */
 260                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 261                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 262         }
 263         cairo_fill (cr);
 264
 265         height = min(max_pattern_metric_size, height);
 266         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 267
 268         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 269
 270                 Gdk::Color c;
 271                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 272                         /* we're overlaying more than 1 set of marks, so use different colours */
 273                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 274                 } else if (background) {
 275                         set_fg_color(w, type, &c);
 276                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 277                 } else {
 278                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 279                 }
 280                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 281
 282                 // tick-maker position in dBFS, line-thickness
 283                 std::map<float,float> points;
 284
 285                 switch (*i) {
 286                 case DataType::AUDIO:
 287
 288                         switch (type) {
 289                                 case MeterK14:
 290                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 291                                         points.insert (std::pair<float,float>(-44.0f, 1.0));
 292                                         points.insert (std::pair<float,float>(-34.0f, 1.0));
 293                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 294                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 295                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 296                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 297                                         points.insert (std::pair<float,float>(-11.0f, 1.0));
 298                                         points.insert (std::pair<float,float>( -8.0f, 1.0));
 299                                         points.insert (std::pair<float,float>( -4.0f, 1.0));
 300                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 301                                         break;
 302                                 case MeterK20:
 303                                         points.insert (std::pair<float,float>(-60.0f, 1.0));
 304                                         points.insert (std::pair<float,float>(-50.0f, 1.0));
 305                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 306                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 307                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 308                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 309                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 310                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 311                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 312                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 313                                         points.insert (std::pair<float,float>( -5.0f, 1.0));
 314                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 315                                         break;
 316                                 case MeterIEC2EBU:
 317                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 318                                         points.insert (std::pair<float,float>(-28.0f, 0.5));
 319                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 320                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 321                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 322                                         points.insert (std::pair<float,float>(-20.0f, 0.5));
 323                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 324                                         points.insert (std::pair<float,float>(-16.0f, 0.5));
 325                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 326                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 327                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 328                                         points.insert (std::pair<float,float>( -9.0f, 0.5));
 329                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 330                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 331                                         break;
 332                                 case MeterIEC2BBC:
 333                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 334                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 335                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 336                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 337                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 338                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 339                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 340                                         break;
 341                                 case MeterIEC1NOR:
 342                                         points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
 343                                         points.insert (std::pair<float,float>(-57.0f, 0.5));
 344                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 345                                         points.insert (std::pair<float,float>(-51.0f, 0.5));
 346                                         points.insert (std::pair<float,float>(-48.0f, 1.0));
 347                                         points.insert (std::pair<float,float>(-45.0f, 0.5));
 348                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 349                                         points.insert (std::pair<float,float>(-39.0f, 0.5));
 350                                         points.insert (std::pair<float,float>(-36.0f, 1.0));
 351
 352                                         points.insert (std::pair<float,float>(-33.0f, 1.0));
 353                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 354                                         points.insert (std::pair<float,float>(-27.0f, 1.0));
 355                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 356                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 357
 358                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 359                                         points.insert (std::pair<float,float>(-15.0f, 1.0));
 360                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 361                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 362                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 363                                         break;
 364                                 case MeterIEC1DIN:
 365                                         points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
 366                                         points.insert (std::pair<float,float>( -4.0f, 1.0)); // "100%"
 367                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 368                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 369                                         points.insert (std::pair<float,float>(-15.0f, 0.5)); // "50%"
 370                                         points.insert (std::pair<float,float>(-18.0f, 0.5)); // "-9"
 371                                         points.insert (std::pair<float,float>(-19.0f, 1.0)); // "30%"
 372                                         points.insert (std::pair<float,float>(-29.0f, 1.0)); // "10%"
 373                                         points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
 374                                         points.insert (std::pair<float,float>(-39.0f, 1.0)); // "3%"
 375                                         points.insert (std::pair<float,float>(-49.0f, 0.5)); // "1%"
 376                                         points.insert (std::pair<float,float>(-59.0f, 1.0));
 377                                         break;
 378                                 case MeterVU:
 379                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 380                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 381                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 382                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 383                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 384                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 385                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 386                                         points.insert (std::pair<float,float>(-25.0f, 1.0));
 387                                         points.insert (std::pair<float,float>(-27.0f, 1.0));
 388                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 389                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 390                                         break;
 391
 392                                 default:
 393                                         points.insert (std::pair<float,float>(-60, 0.5));
 394                                         points.insert (std::pair<float,float>(-50, 1.0));
 395                                         points.insert (std::pair<float,float>(-40, 1.0));
 396                                         points.insert (std::pair<float,float>(-30, 1.0));
 397                                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 398                                                 points.insert (std::pair<float,float>(-24, 1.0));
 399                                         } else {
 400                                                 points.insert (std::pair<float,float>(-25, 1.0));
 401                                         }
 402                                         points.insert (std::pair<float,float>(-20, 1.0));
 403
 404                                         points.insert (std::pair<float,float>(-19, 0.5));
 405                                         points.insert (std::pair<float,float>(-18, 1.0));
 406                                         points.insert (std::pair<float,float>(-17, 0.5));
 407                                         points.insert (std::pair<float,float>(-16, 0.5));
 408                                         points.insert (std::pair<float,float>(-15, 1.0));
 409
 410                                         points.insert (std::pair<float,float>(-14, 0.5));
 411                                         points.insert (std::pair<float,float>(-13, 0.5));
 412                                         points.insert (std::pair<float,float>(-12, 0.5));
 413                                         points.insert (std::pair<float,float>(-11, 0.5));
 414                                         points.insert (std::pair<float,float>(-10, 1.0));
 415
 416                                         points.insert (std::pair<float,float>( -9, 1.0));
 417                                         points.insert (std::pair<float,float>( -8, 0.5));
 418                                         points.insert (std::pair<float,float>( -7, 0.5));
 419                                         points.insert (std::pair<float,float>( -6, 0.5));
 420                                         points.insert (std::pair<float,float>( -5, 1.0));
 421                                         points.insert (std::pair<float,float>( -4, 0.5));
 422                                         points.insert (std::pair<float,float>( -3, 1.0));
 423                                         points.insert (std::pair<float,float>( -2, 0.5));
 424                                         points.insert (std::pair<float,float>( -1, 0.5));
 425
 426                                         points.insert (std::pair<float,float>(  0, 1.0));
 427                                         points.insert (std::pair<float,float>(  1, 0.5));
 428                                         points.insert (std::pair<float,float>(  2, 0.5));
 429                                         points.insert (std::pair<float,float>(  3, 1.0));
 430                                         points.insert (std::pair<float,float>(  4, 0.5));
 431                                         points.insert (std::pair<float,float>(  5, 0.5));
 432                                         break;
 433                         }
 434                         break;
 435
 436                 case DataType::MIDI:
 437                         points.insert (std::pair<float,float>(  0, 1.0));
 438                         points.insert (std::pair<float,float>( 16, 0.5));
 439                         points.insert (std::pair<float,float>( 32, 0.5));
 440                         points.insert (std::pair<float,float>( 48, 0.5));
 441                         points.insert (std::pair<float,float>( 64, 1.0));
 442                         points.insert (std::pair<float,float>( 80, 0.5));
 443                         points.insert (std::pair<float,float>( 96, 0.5));
 444                         points.insert (std::pair<float,float>(100, 1.0));
 445                         points.insert (std::pair<float,float>(112, 0.5));
 446                         points.insert (std::pair<float,float>(127, 1.0));
 447                         break;
 448                 }
 449
 450                 for (std::map<float,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 451                         cairo_set_line_width (cr, (j->second));
 452
 453                         float fraction = 0;
 454                         gint pos;
 455
 456                         switch (*i) {
 457                         case DataType::AUDIO:
 458                                 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 459
 460                                 pos = height - (gint) floor (height * fraction);
 461                                 pos = max (pos, 1);
 462                                 cairo_move_to(cr, 0, pos + .5);
 463                                 cairo_line_to(cr, 3, pos + .5);
 464                                 cairo_stroke (cr);
 465                                 break;
 466                         case DataType::MIDI:
 467                                 fraction = (j->first) / 127.0;
 468                                 pos = 1 + height - (gint) floor (height * fraction);
 469                                 pos = min (pos, height);
 470                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 471                                 cairo_fill(cr);
 472                                 break;
 473                         }
 474                 }
 475         }
 476
 477         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 478
 479         cairo_destroy (cr);
 480         cairo_surface_destroy (surface);
 481
 482         return pattern;
 483 }
 484
 485 static cairo_pattern_t*
 486 meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
 487 {
 488         Glib::RefPtr<Gdk::Window> win (w.get_window());
 489
 490         bool tickleft, tickright;
 491         bool background;
 492         gint width, height;
 493         win->get_size (width, height);
 494
 495         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 496         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 497         background = types.size() == 0 || tickleft || tickright;
 498
 499         if (!tickleft && !tickright) {
 500                 tickright = true;
 501         }
 502
 503         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 504         cairo_t* cr = cairo_create (surface);
 505         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 506
 507         Pango::AttrList audio_font_attributes;
 508         Pango::AttrList midi_font_attributes;
 509         Pango::AttrList unit_font_attributes;
 510
 511         Pango::AttrFontDesc* font_attr;
 512         Pango::FontDescription font;
 513
 514         font = Pango::FontDescription ("ArdourMono");
 515         double fixfontsize = 81920.0 / (double) ARDOUR::Config->get_font_scale();
 516
 517         font.set_weight (Pango::WEIGHT_NORMAL);
 518         font.set_size (9.0 * PANGO_SCALE * fixfontsize);
 519         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 520         audio_font_attributes.change (*font_attr);
 521         delete font_attr;
 522
 523         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 524         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 525         font.set_size (8.0 * PANGO_SCALE * fixfontsize);
 526         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 527         midi_font_attributes.change (*font_attr);
 528         delete font_attr;
 529
 530         font.set_size (6.0 * PANGO_SCALE * fixfontsize);
 531         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 532         unit_font_attributes.change (*font_attr);
 533         delete font_attr;
 534
 535         cairo_move_to (cr, 0, 0);
 536         cairo_rectangle (cr, 0, 0, width, height);
 537         if (background) {
 538                 /* meterbridge */
 539                 set_bg_color(w, cr, type);
 540         } else {
 541                 /* mixer */
 542                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 543                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 544         }
 545         cairo_fill (cr);
 546
 547         cairo_set_line_width (cr, 1.0);
 548
 549         height = min(max_pattern_metric_size, height);
 550         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 551         Gdk::Color c;
 552
 553         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 554
 555                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 556                         /* we're overlaying more than 1 set of marks, so use different colours */
 557                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 558                 } else if (background) {
 559                         set_fg_color(w, type, &c);
 560                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 561                 } else {
 562                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 563                 }
 564                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 565
 566
 567                 // label-pos in dBFS, label-text
 568                 std::map<float,string> points;
 569
 570                 switch (*i) {
 571                 case DataType::AUDIO:
 572                         layout->set_attributes (audio_font_attributes);
 573                         switch (type) {
 574                                 case MeterK14:
 575                                         points.insert (std::pair<float,string>(-54.0f, "-40"));
 576                                         points.insert (std::pair<float,string>(-44.0f, "-30"));
 577                                         points.insert (std::pair<float,string>(-34.0f, "-20"));
 578                                         points.insert (std::pair<float,string>(-24.0f, "-10"));
 579                                         points.insert (std::pair<float,string>(-20.0f,  "-6"));
 580                                         points.insert (std::pair<float,string>(-17.0f,  "-3"));
 581                                         points.insert (std::pair<float,string>(-14.0f,   "0"));
 582                                         points.insert (std::pair<float,string>(-11.0f,  "+3"));
 583                                         points.insert (std::pair<float,string>( -8.0f,  "+6"));
 584                                         points.insert (std::pair<float,string>( -4.0f, "+10"));
 585                                         points.insert (std::pair<float,string>(  0.0f, "+14"));
 586                                         break;
 587                                 case MeterK20:
 588                                         points.insert (std::pair<float,string>(-60.0f, "-40"));
 589                                         points.insert (std::pair<float,string>(-50.0f, "-30"));
 590                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 591                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 592                                         points.insert (std::pair<float,string>(-26.0f,  "-6"));
 593                                         points.insert (std::pair<float,string>(-23.0f,  "-3"));
 594                                         points.insert (std::pair<float,string>(-20.0f,   "0"));
 595                                         points.insert (std::pair<float,string>(-17.0f,  "+3"));
 596                                         points.insert (std::pair<float,string>(-14.0f,  "+6"));
 597                                         points.insert (std::pair<float,string>(-10.0f, "+10"));
 598                                         points.insert (std::pair<float,string>( -5.0f, "+15"));
 599                                         points.insert (std::pair<float,string>(  0.0f, "+20"));
 600                                         break;
 601                                 default:
 602                                 case MeterPeak:
 603                                 case MeterKrms:
 604                                         points.insert (std::pair<float,string>(-50.0f, "-50"));
 605                                         points.insert (std::pair<float,string>(-40.0f, "-40"));
 606                                         points.insert (std::pair<float,string>(-30.0f, "-30"));
 607                                         points.insert (std::pair<float,string>(-20.0f, "-20"));
 608                                         if (types.size() == 1) {
 609                                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 610                                                         points.insert (std::pair<float,string>(-24.0f, "-24"));
 611                                                 } else {
 612                                                         points.insert (std::pair<float,string>(-25.0f, "-25"));
 613                                                 }
 614                                                 points.insert (std::pair<float,string>(-15.0f, "-15"));
 615                                         }
 616                                         points.insert (std::pair<float,string>(-18.0f, "-18"));
 617                                         points.insert (std::pair<float,string>(-10.0f, "-10"));
 618                                         points.insert (std::pair<float,string>( -5.0f, "-5"));
 619                                         points.insert (std::pair<float,string>( -3.0f, "-3"));
 620                                         points.insert (std::pair<float,string>(  0.0f, "+0"));
 621                                         points.insert (std::pair<float,string>(  3.0f, "+3"));
 622                                         break;
 623
 624                                 case MeterIEC2EBU:
 625                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 626                                         points.insert (std::pair<float,string>(-26.0f, "-8"));
 627                                         points.insert (std::pair<float,string>(-22.0f, "-4"));
 628                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 629                                         points.insert (std::pair<float,string>(-14.0f, "+4"));
 630                                         points.insert (std::pair<float,string>(-10.0f, "+8"));
 631                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 632                                         break;
 633
 634                                 case MeterIEC2BBC:
 635                                         points.insert (std::pair<float,string>(-30.0f, " 1 "));
 636                                         points.insert (std::pair<float,string>(-26.0f, " 2 "));
 637                                         points.insert (std::pair<float,string>(-22.0f, " 3 "));
 638                                         points.insert (std::pair<float,string>(-18.0f, " 4 "));
 639                                         points.insert (std::pair<float,string>(-14.0f, " 5 "));
 640                                         points.insert (std::pair<float,string>(-10.0f, " 6 "));
 641                                         points.insert (std::pair<float,string>( -6.0f, " 7 "));
 642                                         break;
 643
 644                                 case MeterIEC1NOR:
 645                                         //points.insert (std::pair<float,string>(-60.0f, "-42"));
 646                                         points.insert (std::pair<float,string>(-54.0f, "-36"));
 647                                         points.insert (std::pair<float,string>(-48.0f, "-30"));
 648                                         points.insert (std::pair<float,string>(-42.0f, "-24"));
 649                                         points.insert (std::pair<float,string>(-36.0f, "-18"));
 650
 651                                         points.insert (std::pair<float,string>(-33.0f, "-15"));
 652                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 653                                         points.insert (std::pair<float,string>(-27.0f, "-9"));
 654                                         points.insert (std::pair<float,string>(-24.0f, "-6"));
 655                                         points.insert (std::pair<float,string>(-21.0f, "-3"));
 656
 657                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 658                                         points.insert (std::pair<float,string>(-15.0f, "+3"));
 659                                         points.insert (std::pair<float,string>(-12.0f, "+6"));
 660                                         points.insert (std::pair<float,string>( -9.0f, "+9"));
 661                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 662                                         break;
 663
 664                                 case MeterIEC1DIN:
 665                                         //points.insert (std::pair<float,string>( -3.0f, "200%"));
 666                                         points.insert (std::pair<float,string>( -4.0f, "+5")); // "100%"
 667                                         points.insert (std::pair<float,string>( -9.0f, "0"));
 668                                         points.insert (std::pair<float,string>(-14.0f, "-5"));
 669                                         //points.insert (std::pair<float,string>(-15.0f, "50%"));
 670                                         //points.insert (std::pair<float,string>(-18.0f, "-9"));
 671                                         points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
 672                                         points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
 673                                         //points.insert (std::pair<float,string>(-35.0f, "-20")); // "5%"
 674                                         points.insert (std::pair<float,string>(-39.0f, "-30")); // "3%"
 675                                         //points.insert (std::pair<float,string>(-49.0f, "1%"));
 676                                         points.insert (std::pair<float,string>(-59.0f, "-50"));
 677                                         break;
 678
 679                                 case MeterVU:
 680                                         points.insert (std::pair<float,string>(-17.0f, "+3"));
 681                                         points.insert (std::pair<float,string>(-18.0f, "+2"));
 682                                         points.insert (std::pair<float,string>(-19.0f, "+1"));
 683                                         points.insert (std::pair<float,string>(-20.0f, "0"));
 684                                         points.insert (std::pair<float,string>(-21.0f, "-1"));
 685                                         points.insert (std::pair<float,string>(-22.0f, "-2"));
 686                                         points.insert (std::pair<float,string>(-23.0f, "-3"));
 687                                         points.insert (std::pair<float,string>(-25.0f, "-5"));
 688                                         points.insert (std::pair<float,string>(-27.0f, "-7"));
 689                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 690                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 691                                         break;
 692                         }
 693                         break;
 694                 case DataType::MIDI:
 695                         layout->set_attributes (midi_font_attributes);
 696                         points.insert (std::pair<float,string>(  0, "0"));
 697                         if (types.size() == 1) {
 698                                 points.insert (std::pair<float,string>( 16,  "16"));
 699                                 points.insert (std::pair<float,string>( 32,  "32"));
 700                                 points.insert (std::pair<float,string>( 48,  "48"));
 701                                 points.insert (std::pair<float,string>( 64,  "64"));
 702                                 points.insert (std::pair<float,string>( 80,  "80"));
 703                                 points.insert (std::pair<float,string>( 96,  "96"));
 704                                 points.insert (std::pair<float,string>(100, "100"));
 705                                 points.insert (std::pair<float,string>(112, "112"));
 706                         } else {
 707                                 /* labels that don't overlay with dB */
 708                                 points.insert (std::pair<float,string>( 24, "24"));
 709                                 points.insert (std::pair<float,string>( 48, "48"));
 710                                 points.insert (std::pair<float,string>( 72, "74"));
 711                         }
 712                         points.insert (std::pair<float,string>(127, "127"));
 713                         break;
 714                 }
 715
 716                 gint pos;
 717
 718                 for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
 719                         float fraction = 0;
 720                         bool align_center = background; // this is true for meterbridge meters w/ fixed background
 721                         switch (*i) {
 722                                 case DataType::AUDIO:
 723                                         fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 724
 725                                         pos = height - (gint) floor (height * fraction);
 726                                         pos = max (pos, 1);
 727                                         if (tickleft) {
 728                                                 cairo_move_to(cr, width-1.5, pos + .5);
 729                                                 cairo_line_to(cr, width, pos + .5);
 730                                                 cairo_stroke (cr);
 731                                         } else if (tickright) {
 732                                                 cairo_move_to(cr, 0, pos + .5);
 733                                                 cairo_line_to(cr, 1.5, pos + .5);
 734                                                 cairo_stroke (cr);
 735                                         }
 736                                         break;
 737
 738                                 case DataType::MIDI:
 739                                         align_center = false; // don't bleed into legend
 740                                         fraction = (j->first) / 127.0;
 741                                         pos = 1 + height - (gint) rintf (height * fraction);
 742                                         pos = min (pos, height);
 743                                         if (tickleft) {
 744                                                 cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 745                                                 cairo_fill(cr);
 746                                         } else if (tickright) {
 747                                                 cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 748                                                 cairo_fill(cr);
 749                                         }
 750                                         break;
 751                         }
 752
 753                         layout->set_text(j->second.c_str());
 754
 755                         int tw, th;
 756                         layout->get_pixel_size(tw, th);
 757
 758                         int p = pos - (th / 2) - 1;
 759                         p = min (p, height - th);
 760                         p = max (p, 0);
 761
 762                         if (align_center) {
 763                                 cairo_move_to (cr, (width-tw)/2.0, p);
 764                         } else {
 765                                 cairo_move_to (cr, width-3-tw, p);
 766                         }
 767                         pango_cairo_show_layout (cr, layout->gobj());
 768                 }
 769         }
 770
 771         // add legend
 772         if (types.size() == 1) {
 773                 int tw, th;
 774                 layout->set_attributes (unit_font_attributes);
 775                 switch (types.at(0)) {
 776                         case DataType::AUDIO:
 777                                 switch (type) {
 778                                         case MeterK20:
 779                                                 layout->set_text("K20");
 780                                                 break;
 781                                         case MeterK14:
 782                                                 layout->set_text("K14");
 783                                                 break;
 784                                         default:
 785                                         case MeterPeak:
 786                                         case MeterKrms:
 787                                                 layout->set_text("dBFS");
 788                                                 break;
 789                                         case MeterIEC2EBU:
 790                                                 layout->set_text("EBU");
 791                                                 break;
 792                                         case MeterIEC2BBC:
 793                                                 layout->set_text("BBC");
 794                                                 break;
 795                                         case MeterIEC1DIN:
 796                                                 layout->set_text("DIN");
 797                                                 break;
 798                                         case MeterIEC1NOR:
 799                                                 layout->set_text("NOR");
 800                                                 break;
 801                                         case MeterVU:
 802                                                 layout->set_text("VU");
 803                                                 break;
 804                                 }
 805                                 layout->get_pixel_size(tw, th);
 806                                 break;
 807                         case DataType::MIDI:
 808                                 layout->set_text("mid");
 809                                 layout->get_pixel_size(tw, th);
 810                                 break;
 811                 }
 812                 if (!background) {
 813                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 814                 }
 815                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 816                 if (tickleft) {
 817                         cairo_move_to (cr, width - 2 - tw, height - th - 0.5);
 818                 } else {
 819                         cairo_move_to (cr, 2, height - th - 0.5);
 820                 }
 821                 pango_cairo_show_layout (cr, layout->gobj());
 822         }
 823
 824         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 825
 826         cairo_destroy (cr);
 827         cairo_surface_destroy (surface);
 828
 829         return pattern;
 830 }
 831
 832 gint
 833 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 834 {
 835         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 836         cairo_t* cr;
 837
 838         cr = gdk_cairo_create (win->gobj());
 839
 840         /* clip to expose area */
 841
 842         gdk_cairo_rectangle (cr, &ev->area);
 843         cairo_clip (cr);
 844
 845         cairo_pattern_t* pattern;
 846         const MeterMatricsMapKey key (mta->get_name(), type);
 847         MetricPatternMap::iterator i = ticks_patterns.find (key);
 848
 849         if (i == ticks_patterns.end()) {
 850                 pattern = meter_render_ticks (*mta, type, types);
 851                 ticks_patterns[key] = pattern;
 852         } else {
 853                 pattern = i->second;
 854         }
 855
 856         cairo_move_to (cr, 0, 0);
 857         cairo_set_source (cr, pattern);
 858
 859         gint width, height;
 860         win->get_size (width, height);
 861
 862         cairo_rectangle (cr, 0, 0, width, height);
 863         cairo_fill (cr);
 864
 865         cairo_destroy (cr);
 866
 867         return true;
 868 }
 869
 870 gint
 871 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 872 {
 873         Glib::RefPtr<Gdk::Window> win (mma->get_window());
 874         cairo_t* cr;
 875
 876         cr = gdk_cairo_create (win->gobj());
 877
 878         /* clip to expose area */
 879
 880         gdk_cairo_rectangle (cr, &ev->area);
 881         cairo_clip (cr);
 882
 883         cairo_pattern_t* pattern;
 884         const MeterMatricsMapKey key (mma->get_name(), type);
 885         MetricPatternMap::iterator i = metric_patterns.find (key);
 886
 887         if (i == metric_patterns.end()) {
 888                 pattern = meter_render_metrics (*mma, type, types);
 889                 metric_patterns[key] = pattern;
 890         } else {
 891                 pattern = i->second;
 892         }
 893
 894         cairo_move_to (cr, 0, 0);
 895         cairo_set_source (cr, pattern);
 896
 897         gint width, height;
 898         win->get_size (width, height);
 899
 900         cairo_rectangle (cr, 0, 0, width, height);
 901         cairo_fill (cr);
 902
 903         cairo_destroy (cr);
 904
 905         return true;
 906 }
 907
 908 void
 909 ArdourMeter::meter_clear_pattern_cache(int which) {
 910         MetricPatternMap::iterator i = metric_patterns.begin();
 911         MetricPatternMap::iterator j = ticks_patterns.begin();
 912
 913         while (i != metric_patterns.end()) {
 914                 int m = 4;
 915                 MeterMatricsMapKey const * const key = &(i->first);
 916                 std::string n = key->_n;
 917                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 918                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 919                 if (which & m) {
 920                         cairo_pattern_destroy(i->second);
 921                         metric_patterns.erase(i++);
 922                 } else {
 923                         ++i;
 924                 }
 925         }
 926
 927         while (j != ticks_patterns.end()) {
 928                 int m = 4;
 929                 MeterMatricsMapKey const * const key = &(j->first);
 930                 std::string n = key->_n;
 931                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 932                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 933                 if (which & m) {
 934                         cairo_pattern_destroy(j->second);
 935                         ticks_patterns.erase(j++);
 936                 } else {
 937                         ++j;
 938                 }
 939         }
 940         RedrawMetrics();
 941 }