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 <gtkmm/drawingarea.h>
  21
  22 #include <gtkmm2ext/cairo_widget.h>
  23 #include <gtkmm2ext/gtk_ui.h>
  24 #include <gtkmm2ext/utils.h>
  25 #include <gtkmm2ext/rgb_macros.h>
  26
  27 #include <ardour/rc_configuration.h>
  28 #include "utils.h"
  29 #include "logmeter.h"
  30 #include "meter_patterns.h"
  31 #include "ui_config.h"
  32
  33 #include "pbd/i18n.h"
  34
  35 using namespace ARDOUR;
  36 using namespace ARDOUR_UI_UTILS;
  37 using namespace PBD;
  38 using namespace Gtk;
  39 using namespace Gtkmm2ext;
  40 using namespace std;
  41 using namespace ArdourMeter;
  42
  43 static const int max_pattern_metric_size = 1026;
  44
  45 /* signals used by meters */
  46
  47 sigc::signal<void> ArdourMeter::ResetAllPeakDisplays;
  48 sigc::signal<void,ARDOUR::Route*> ArdourMeter::ResetRoutePeakDisplays;
  49 sigc::signal<void,ARDOUR::RouteGroup*> ArdourMeter::ResetGroupPeakDisplays;
  50 sigc::signal<void> ArdourMeter::RedrawMetrics;
  51
  52 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> ArdourMeter::SetMeterTypeMulti;
  53
  54
  55 /* pattern cache */
  56
  57 struct MeterMatricsMapKey {
  58         MeterMatricsMapKey (std::string n, MeterType t, int dt)
  59                 : _n(n)
  60                 , _t(t)
  61                 , _dt(dt)
  62         {}
  63         inline bool operator<(const MeterMatricsMapKey& rhs) const {
  64                 return (_n < rhs._n) || (_n == rhs._n && _t < rhs._t) || (_n == rhs._n && _t == rhs._t && _dt < rhs._dt);
  65         }
  66         std::string _n;
  67         MeterType _t;
  68         int _dt;
  69 };
  70
  71 namespace ArdourMeter {
  72         typedef std::map<MeterMatricsMapKey, cairo_pattern_t*> MetricPatternMap;
  73 }
  74
  75 static ArdourMeter::MetricPatternMap ticks_patterns;
  76 static ArdourMeter::MetricPatternMap metric_patterns;
  77
  78
  79 const std::string
  80 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
  81 {
  82         switch (mt) {
  83                 case MeterPeak:
  84                         return _("Peak (+6dBFS)");
  85                         break;
  86                 case MeterPeak0dB:
  87                         return _("Peak (0dBFS)");
  88                         break;
  89                 case MeterKrms:
  90                         return _("RMS + Peak");
  91                         break;
  92                 case MeterIEC1DIN:
  93                         return _("IEC1/DIN");
  94                         break;
  95                 case MeterIEC1NOR:
  96                         return _("IEC1/Nordic");
  97                         break;
  98                 case MeterIEC2BBC:
  99                         return _("IEC2/BBC");
 100                         break;
 101                 case MeterIEC2EBU:
 102                         return _("IEC2/EBU");
 103                         break;
 104                 case MeterK20:
 105                         return _("K20/RMS");
 106                         break;
 107                 case MeterK14:
 108                         return _("K14/RMS");
 109                         break;
 110                 case MeterK12:
 111                         return _("K12/RMS");
 112                         break;
 113                 case MeterVU:
 114                         return _("VU");
 115                         break;
 116                 default:
 117                         assert(0);
 118                         return _("???");
 119                         break;
 120         }
 121 }
 122
 123 static inline int types_to_bit (vector<ARDOUR::DataType> types) {
 124         int rv = 0;
 125         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 126                 rv |= 1 << (*i);
 127         }
 128         return rv;
 129 }
 130
 131 static inline float mtr_col_and_fract(
 132                 cairo_t* cr, Gdk::Color const * const c, const uint32_t peakcolor, const MeterType mt, const float val)
 133 {
 134         float fraction = 0;
 135
 136         switch (mt) {
 137                 default:
 138                 case MeterKrms:
 139                 case MeterPeak:
 140                         fraction = log_meter (val);
 141                         if (val >= 0 || val == -9) {
 142                                 cairo_set_source_rgb (cr,
 143                                                 UINT_RGBA_R_FLT(peakcolor),
 144                                                 UINT_RGBA_G_FLT(peakcolor),
 145                                                 UINT_RGBA_B_FLT(peakcolor));
 146                         } else {
 147                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 148                         }
 149                         break;
 150                 case MeterPeak0dB:
 151                         fraction = log_meter0dB (val);
 152                         if (val >= 0 || val == -9) {
 153                                 cairo_set_source_rgb (cr,
 154                                                 UINT_RGBA_R_FLT(peakcolor),
 155                                                 UINT_RGBA_G_FLT(peakcolor),
 156                                                 UINT_RGBA_B_FLT(peakcolor));
 157                         } else {
 158                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 159                         }
 160                         break;
 161                 case MeterIEC2BBC:
 162                 case MeterIEC2EBU:
 163                         fraction = meter_deflect_ppm(val);
 164                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 165                         break;
 166                 case MeterIEC1NOR:
 167                         fraction = meter_deflect_nordic(val);
 168 #if 0
 169                         if (val == -18.0) {
 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 #else
 178                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 179 #endif
 180                         break;
 181                 case MeterIEC1DIN:
 182                         fraction = meter_deflect_din(val);
 183                         if (val == -9.0 || val == -15 || val == -18) {
 184                                 cairo_set_source_rgb (cr,
 185                                                 UINT_RGBA_R_FLT(peakcolor),
 186                                                 UINT_RGBA_G_FLT(peakcolor),
 187                                                 UINT_RGBA_B_FLT(peakcolor));
 188                         } else {
 189                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 190                         }
 191                         break;
 192                 case MeterVU:
 193                         fraction = meter_deflect_vu(val);
 194                         if (val >= -20.0) {
 195                                 cairo_set_source_rgb (cr,
 196                                                 UINT_RGBA_R_FLT(peakcolor),
 197                                                 UINT_RGBA_G_FLT(peakcolor),
 198                                                 UINT_RGBA_B_FLT(peakcolor));
 199                         } else {
 200                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 201                         }
 202                         break;
 203                 case MeterK20:
 204                         fraction = meter_deflect_k (val, 20);
 205                         if (val >= -16.0) {
 206                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 207                         } else if (val >= -20.0) {
 208                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 209                         } else {
 210                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 211                         }
 212                         break;
 213                 case MeterK14:
 214                         if (val >= -10.0) {
 215                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 216                         } else if (val >= -14.0) {
 217                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 218                         } else {
 219                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 220                         }
 221                         fraction = meter_deflect_k (val, 14);
 222                         break;
 223                 case MeterK12:
 224                         if (val >= -8.0) {
 225                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 226                         } else if (val >= -12.0) {
 227                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 228                         } else {
 229                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 230                         }
 231                         fraction = meter_deflect_k (val, 12);
 232                         break;
 233         }
 234         return fraction;
 235 }
 236
 237 static void mtr_red_stripe(cairo_t* cr, float l, float w, int h, float top, float bot) {
 238         if (w <= 0) return;
 239         int t = h - floorf (h * (top));
 240         int b = h - floorf (h * (bot));
 241         cairo_set_source_rgba (cr, .75, 0, 0, 0.75);
 242         cairo_rectangle (cr, l, t + .5, w, b - t);
 243         cairo_fill (cr);
 244 }
 245
 246 static void set_bg_color (Gtk::Widget& w, cairo_t* cr, MeterType type) {
 247         double r,g,b,a;
 248         switch(type) {
 249                 case MeterVU:
 250                         ArdourCanvas::color_to_rgba (UIConfiguration::instance().color ("meterstrip vu bg"), r, g, b, a);
 251                         break;
 252                 case MeterIEC1DIN:
 253                 case MeterIEC1NOR:
 254                 case MeterIEC2BBC:
 255                 case MeterIEC2EBU:
 256                         ArdourCanvas::color_to_rgba (UIConfiguration::instance().color ("meterstrip ppm bg"), r, g, b, a);
 257                         break;
 258                 case MeterK12:
 259                 case MeterK14:
 260                 case MeterK20:
 261                         ArdourCanvas::color_to_rgba (UIConfiguration::instance().color ("meterstrip dpm bg"), r, g, b, a);
 262                         break;
 263                 default:
 264                         {
 265                         Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 266                         r = c.get_red_p();
 267                         g = c.get_green_p();
 268                         b = c.get_blue_p();
 269                         }
 270                         break;
 271         }
 272         cairo_set_source_rgb (cr, r, g, b);
 273 }
 274
 275 static void set_fg_color(Gtk::Widget&, MeterType type, Gdk::Color * c) {
 276         double r,g,b,a;
 277         switch(type) {
 278                 case MeterVU:
 279                         ArdourCanvas::color_to_rgba (UIConfiguration::instance().color ("meterstrip vu fg"), r, g, b, a);
 280                         break;
 281                 case MeterIEC1DIN:
 282                 case MeterIEC1NOR:
 283                 case MeterIEC2BBC:
 284                 case MeterIEC2EBU:
 285                         ArdourCanvas::color_to_rgba (UIConfiguration::instance().color ("meterstrip ppm fg"), r, g, b, a);
 286                         break;
 287                 default:
 288                         ArdourCanvas::color_to_rgba (UIConfiguration::instance().color ("meterstrip dpm fg"), r, g, b, a);
 289                         break;
 290         }
 291         c->set_rgb_p (r, g, b);
 292 }
 293
 294 static cairo_pattern_t*
 295 meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
 296 {
 297         Glib::RefPtr<Gdk::Window> win (w.get_window());
 298
 299         bool background;
 300         bool tickleft, tickright;
 301         gint width, height;
 302         win->get_size (width, height);
 303         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 304         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 305         background = types.size() == 0 || tickleft || tickright;
 306
 307         float box_l=0;
 308         float box_w=0;
 309 #define PX_SCALE(pxmin, dflt) rint(std::max((double)pxmin, (double)dflt * UIConfiguration::instance().get_ui_scale()))
 310         if (tickleft) {
 311                 if (w.get_name().substr(0, 3) == "Bar") {
 312                         box_w = PX_SCALE(2, 2);
 313                         box_l = width - box_w;
 314                 } else if (w.get_name().substr(0, 4) == "Mark") {
 315                         box_w = PX_SCALE(2, 2);
 316                         box_l = width - box_w;
 317                         background = false;
 318                 }
 319         } else if (tickright) {
 320                 if (w.get_name().substr(0, 3) == "Bar") {
 321                         box_l = 0; box_w = PX_SCALE(2, 2);
 322                 } else if (w.get_name().substr(0, 4) == "Mark") {
 323                         box_l = 0; box_w = PX_SCALE(2, 2);
 324                         background = false;
 325                 }
 326         } else {
 327                 box_l = 0; box_w = width;
 328         }
 329 #undef PX_SCALE
 330
 331         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 332         cairo_t* cr = cairo_create (surface);
 333
 334         cairo_move_to (cr, 0, 0);
 335         cairo_rectangle (cr, 0, 0, width, height);
 336
 337         if (background) {
 338                 /* meterbridge */
 339                 set_bg_color(w, cr, type);
 340         } else {
 341                 /* mixer */
 342                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 343                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 344         }
 345         cairo_fill (cr);
 346
 347         height = min(max_pattern_metric_size, height);
 348         uint32_t peakcolor = UIConfiguration::instance().color ("meterbridge peaklabel");
 349
 350         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 351
 352                 Gdk::Color c;
 353                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 354                         /* we're overlaying more than 1 set of marks, so use different colours */
 355                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 356                 } else if (background) {
 357                         set_fg_color(w, type, &c);
 358                 } else {
 359                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 360                 }
 361
 362                 // tick-maker position in dBFS, line-thickness
 363                 std::map<float,float> points;
 364
 365                 switch (*i) {
 366                 case DataType::AUDIO:
 367
 368                         switch (type) {
 369                                 case MeterK12:
 370                                         points.insert (std::pair<float,float>(-52.0f, 1.0));
 371                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 372                                         points.insert (std::pair<float,float>(-32.0f, 1.0));
 373                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 374                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 375                                         points.insert (std::pair<float,float>(-15.0f, 1.0));
 376                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 377                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 378                                         points.insert (std::pair<float,float>( -8.0f, 0.8));
 379                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 380                                         points.insert (std::pair<float,float>( -3.0f, 1.0));
 381                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 382                                         break;
 383                                 case MeterK14:
 384                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 385                                         points.insert (std::pair<float,float>(-44.0f, 1.0));
 386                                         points.insert (std::pair<float,float>(-34.0f, 1.0));
 387                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 388                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 389                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 390                                         points.insert (std::pair<float,float>(-14.0f, 1.0)); //   0
 391                                         points.insert (std::pair<float,float>(-11.0f, 1.0)); //  +3
 392                                         points.insert (std::pair<float,float>(-10.0f, 0.8)); //  +4
 393                                         points.insert (std::pair<float,float>( -8.0f, 1.0)); //  +6
 394                                         points.insert (std::pair<float,float>( -4.0f, 1.0)); // +10
 395                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 396                                         break;
 397                                 case MeterK20:
 398                                         points.insert (std::pair<float,float>(-60.0f, 1.0));
 399                                         points.insert (std::pair<float,float>(-50.0f, 1.0));
 400                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 401                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 402                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 403                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 404                                         points.insert (std::pair<float,float>(-20.0f, 1.0)); //  0
 405                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 406                                         points.insert (std::pair<float,float>(-16.0f, 0.8));
 407                                         points.insert (std::pair<float,float>(-14.0f, 1.0)); // +6
 408                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 409                                         points.insert (std::pair<float,float>( -5.0f, 1.0));
 410                                         points.insert (std::pair<float,float>(  0.0f, 1.0)); //+20
 411                                         break;
 412                                 case MeterIEC2EBU:
 413                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 414                                         points.insert (std::pair<float,float>(-28.0f, 0.5));
 415                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 416                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 417                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 418                                         points.insert (std::pair<float,float>(-20.0f, 0.5));
 419                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 420                                         points.insert (std::pair<float,float>(-16.0f, 0.5));
 421                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 422                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 423                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 424                                         points.insert (std::pair<float,float>( -9.0f, 0.8));
 425                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 426                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 427                                         break;
 428                                 case MeterIEC2BBC:
 429                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 430                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 431                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 432                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 433                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 434                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 435                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 436                                         break;
 437                                 case MeterIEC1NOR:
 438                                         points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
 439                                         points.insert (std::pair<float,float>(-57.0f, 0.5));
 440                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 441                                         points.insert (std::pair<float,float>(-51.0f, 0.5));
 442                                         points.insert (std::pair<float,float>(-48.0f, 1.0));
 443                                         points.insert (std::pair<float,float>(-45.0f, 0.5));
 444                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 445                                         points.insert (std::pair<float,float>(-39.0f, 0.5));
 446                                         points.insert (std::pair<float,float>(-36.0f, 1.0));
 447
 448                                         points.insert (std::pair<float,float>(-33.0f, 0.5));
 449                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 450                                         points.insert (std::pair<float,float>(-27.0f, 0.5));
 451                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 452                                         points.insert (std::pair<float,float>(-21.0f, 0.5));
 453
 454                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 455                                         points.insert (std::pair<float,float>(-15.0f, 0.5));
 456                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 457                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 458                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 459                                         mtr_red_stripe(cr, box_l, box_w, height,
 460                                                         meter_deflect_nordic(-6.0f), meter_deflect_nordic(-12.0f));
 461                                         break;
 462                                 case MeterIEC1DIN:
 463                                         points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
 464                                         points.insert (std::pair<float,float>( -4.0f, 1.0));
 465                                         points.insert (std::pair<float,float>( -5.0f, 0.5));
 466                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 467                                         points.insert (std::pair<float,float>( -7.0f, 0.5));
 468                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 469                                         points.insert (std::pair<float,float>( -9.0f, 1.0)); // "100%"
 470                                         points.insert (std::pair<float,float>(-10.0f, 0.5));
 471                                         points.insert (std::pair<float,float>(-11.0f, 0.5));
 472                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 473                                         points.insert (std::pair<float,float>(-13.0f, 0.5));
 474                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 475                                         points.insert (std::pair<float,float>(-15.0f, 0.8)); // "50%"
 476                                         points.insert (std::pair<float,float>(-18.0f, 0.8)); // "-9"
 477                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 478                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 479                                         points.insert (std::pair<float,float>(-29.0f, 1.0)); // "-20", "10%"
 480                                         points.insert (std::pair<float,float>(-34.0f, 0.5)); // -25
 481                                         //points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
 482                                         points.insert (std::pair<float,float>(-39.0f, 1.0));
 483                                         points.insert (std::pair<float,float>(-49.0f, 1.0));
 484                                         points.insert (std::pair<float,float>(-54.0f, 0.5));
 485                                         points.insert (std::pair<float,float>(-59.0f, 1.0));
 486                                         mtr_red_stripe(cr, box_l, box_w, height,
 487                                                         meter_deflect_din(0.0f), meter_deflect_din(-9.0f));
 488                                         break;
 489                                 case MeterVU:
 490                                         points.insert (std::pair<float,float>(-17.0f, 1.0)); //+3 VU
 491                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 492                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 493                                         points.insert (std::pair<float,float>(-19.5f, 0.5));
 494                                         points.insert (std::pair<float,float>(-20.0f, 1.0)); // 0 VU
 495                                         points.insert (std::pair<float,float>(-20.5f, 0.5));
 496                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 497                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 498                                         points.insert (std::pair<float,float>(-23.0f, 1.0)); //-3 VU
 499                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 500                                         points.insert (std::pair<float,float>(-25.0f, 1.0));
 501                                         points.insert (std::pair<float,float>(-26.0f, 0.5));
 502                                         points.insert (std::pair<float,float>(-27.0f, 1.0)); //-7 VU
 503                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 504                                         points.insert (std::pair<float,float>(-35.0f, 0.5));
 505                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 506                                         mtr_red_stripe(cr, box_l, box_w, height,
 507                                                         meter_deflect_vu(-17.0f), meter_deflect_vu(-20.0f));
 508                                         break;
 509
 510                                 default:
 511                                         points.insert (std::pair<float,float>(  0, 1.0));
 512                                         points.insert (std::pair<float,float>(  1, 0.5));
 513                                         points.insert (std::pair<float,float>(  2, 0.5));
 514                                         points.insert (std::pair<float,float>(  3, 1.0));
 515                                         points.insert (std::pair<float,float>(  4, 0.5));
 516                                         points.insert (std::pair<float,float>(  5, 0.5));
 517                                         // no break
 518                                 case MeterPeak0dB:
 519                                         points.insert (std::pair<float,float>(-60, 0.5));
 520                                         points.insert (std::pair<float,float>(-50, 1.0));
 521                                         points.insert (std::pair<float,float>(-40, 1.0));
 522                                         points.insert (std::pair<float,float>(-30, 1.0));
 523                                         if (UIConfiguration::instance().get_meter_line_up_level() == MeteringLineUp24) {
 524                                                 points.insert (std::pair<float,float>(-24, 1.0));
 525                                         } else {
 526                                                 points.insert (std::pair<float,float>(-25, 1.0));
 527                                         }
 528                                         points.insert (std::pair<float,float>(-20, 1.0));
 529
 530                                         points.insert (std::pair<float,float>(-19, 0.5));
 531                                         points.insert (std::pair<float,float>(-18, 1.0));
 532                                         points.insert (std::pair<float,float>(-17, 0.5));
 533                                         points.insert (std::pair<float,float>(-16, 0.5));
 534                                         points.insert (std::pair<float,float>(-15, 1.0));
 535
 536                                         points.insert (std::pair<float,float>(-14, 0.5));
 537                                         points.insert (std::pair<float,float>(-13, 0.5));
 538                                         points.insert (std::pair<float,float>(-12, 0.5));
 539                                         points.insert (std::pair<float,float>(-11, 0.5));
 540                                         points.insert (std::pair<float,float>(-10, 1.0));
 541
 542                                         points.insert (std::pair<float,float>( -9, 1.0));
 543                                         points.insert (std::pair<float,float>( -8, 0.5));
 544                                         points.insert (std::pair<float,float>( -7, 0.5));
 545                                         points.insert (std::pair<float,float>( -6, 0.5));
 546                                         points.insert (std::pair<float,float>( -5, 1.0));
 547                                         points.insert (std::pair<float,float>( -4, 0.5));
 548                                         points.insert (std::pair<float,float>( -3, 1.0));
 549                                         points.insert (std::pair<float,float>( -2, 0.5));
 550                                         points.insert (std::pair<float,float>( -1, 0.5));
 551                                         break;
 552                         }
 553                         break;
 554
 555                 case DataType::MIDI:
 556                         points.insert (std::pair<float,float>(  0, 1.0));
 557                         points.insert (std::pair<float,float>( 16, 0.5));
 558                         points.insert (std::pair<float,float>( 32, 0.5));
 559                         points.insert (std::pair<float,float>( 48, 0.5));
 560                         points.insert (std::pair<float,float>( 64, 1.0));
 561                         points.insert (std::pair<float,float>( 80, 0.5));
 562                         points.insert (std::pair<float,float>( 96, 0.5));
 563                         points.insert (std::pair<float,float>(100, 1.0));
 564                         points.insert (std::pair<float,float>(112, 0.5));
 565                         points.insert (std::pair<float,float>(127, 1.0));
 566                         break;
 567                 }
 568
 569                 for (std::map<float,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 570                         cairo_set_line_width (cr, (j->second));
 571
 572                         float fraction = 0;
 573                         gint pos;
 574
 575                         switch (*i) {
 576                         case DataType::AUDIO:
 577                                 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 578
 579                                 pos = height - (gint) floor (height * fraction);
 580                                 pos = max (pos, 1);
 581                                 cairo_move_to(cr, 0, pos + .5);
 582                                 cairo_line_to(cr, width, pos + .5);
 583                                 cairo_stroke (cr);
 584                                 break;
 585                         case DataType::MIDI:
 586                                 fraction = (j->first) / 127.0;
 587                                 pos = 1 + height - (gint) floor (height * fraction);
 588                                 pos = min (pos, height);
 589                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 590                                 cairo_arc(cr, width * .5, pos + .5, 1.0, 0, 2 * M_PI);
 591                                 cairo_fill(cr);
 592                                 break;
 593                         }
 594                 }
 595         }
 596
 597         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 598
 599         cairo_destroy (cr);
 600         cairo_surface_destroy (surface);
 601
 602         return pattern;
 603 }
 604
 605 static cairo_pattern_t*
 606 meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
 607 {
 608         Glib::RefPtr<Gdk::Window> win (w.get_window());
 609
 610         bool tickleft, tickright;
 611         bool background;
 612         int overlay_midi = 1;
 613         gint width, height;
 614         win->get_size (width, height);
 615
 616         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 617         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 618         background = types.size() == 0 || tickleft || tickright;
 619
 620         if (!tickleft && !tickright) {
 621                 tickright = true;
 622         }
 623
 624 #ifdef NO_OVERSAMPLE
 625         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 626         cairo_t* cr = cairo_create (surface);
 627 #else
 628         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width*2, height*2);
 629         cairo_t* cr = cairo_create (surface);
 630         cairo_scale(cr, 2.0, 2.0);
 631 #endif
 632         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 633
 634         Pango::AttrList audio_font_attributes;
 635         Pango::AttrList midi_font_attributes;
 636         Pango::AttrList unit_font_attributes;
 637
 638         Pango::AttrFontDesc* font_attr;
 639         Pango::FontDescription font;
 640
 641         font = Pango::FontDescription (UIConfiguration::instance().get_SmallMonospaceFont());
 642 #ifdef __APPLE__
 643         const double fixfontsize = 1.0;
 644 #else
 645         // counter-act global font-scaling.
 646         const double fixfontsize = std::min(1.0, 0.9 / sqrtf(UIConfiguration::instance().get_ui_scale()));
 647 #endif
 648
 649         font.set_weight (Pango::WEIGHT_NORMAL);
 650         font.set_size (8.0 * fixfontsize * PANGO_SCALE);
 651         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 652         audio_font_attributes.change (*font_attr);
 653         delete font_attr;
 654
 655         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 656         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 657         font.set_size (7.0 * fixfontsize * PANGO_SCALE);
 658         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 659         midi_font_attributes.change (*font_attr);
 660         delete font_attr;
 661
 662         font.set_size (6.0 * fixfontsize * PANGO_SCALE);
 663         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 664         unit_font_attributes.change (*font_attr);
 665         delete font_attr;
 666
 667         cairo_move_to (cr, 0, 0);
 668         cairo_rectangle (cr, 0, 0, width, height);
 669         if (background) {
 670                 /* meterbridge */
 671                 set_bg_color(w, cr, type);
 672         } else {
 673                 /* mixer */
 674                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 675                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 676         }
 677         cairo_fill (cr);
 678
 679         cairo_set_line_width (cr, 1.0);
 680
 681         height = min(max_pattern_metric_size, height);
 682         uint32_t peakcolor = UIConfiguration::instance().color ("meterbridge peaklabel");
 683         Gdk::Color c; // default text color
 684
 685         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 686
 687                 if (types.size() > 1 && (*i) == DataType::MIDI && overlay_midi == 0) {
 688                         continue;
 689                 }
 690
 691                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 692                         /* we're overlaying more than 1 set of marks, so use different colours */
 693                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 694                 } else if (background) {
 695                         set_fg_color(w, type, &c);
 696                 } else {
 697                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 698                 }
 699
 700                 std::map<float,string> points; // map: label-pos in dBFS, label-text
 701
 702                 switch (*i) {
 703                 case DataType::AUDIO:
 704                         layout->set_attributes (audio_font_attributes);
 705                         if (type == MeterPeak0dB) {
 706                                 overlay_midi = 4;
 707                         }
 708                         switch (type) {
 709                                 case MeterK12:
 710                                         overlay_midi = 0;
 711                                         points.insert (std::pair<float,string>(-52.0f, "-40"));
 712                                         points.insert (std::pair<float,string>(-42.0f, "-30"));
 713                                         points.insert (std::pair<float,string>(-32.0f, "-20"));
 714                                         points.insert (std::pair<float,string>(-22.0f, "-10"));
 715                                         points.insert (std::pair<float,string>(-18.0f,  "-6"));
 716                                         points.insert (std::pair<float,string>(-15.0f,  "-3"));
 717                                         points.insert (std::pair<float,string>(-12.0f,  " 0"));
 718                                         points.insert (std::pair<float,string>( -9.0f,  "+3"));
 719                                         points.insert (std::pair<float,string>( -6.0f,  "+6"));
 720                                         points.insert (std::pair<float,string>( -3.0f,  "+9"));
 721                                         points.insert (std::pair<float,string>(  0.0f, "+12"));
 722                                         break;
 723                                 case MeterK14:
 724                                         overlay_midi = 0;
 725                                         points.insert (std::pair<float,string>(-54.0f, "-40"));
 726                                         points.insert (std::pair<float,string>(-44.0f, "-30"));
 727                                         points.insert (std::pair<float,string>(-34.0f, "-20"));
 728                                         points.insert (std::pair<float,string>(-24.0f, "-10"));
 729                                         points.insert (std::pair<float,string>(-20.0f,  "-6"));
 730                                         points.insert (std::pair<float,string>(-17.0f,  "-3"));
 731                                         points.insert (std::pair<float,string>(-14.0f,  " 0"));
 732                                         points.insert (std::pair<float,string>(-11.0f,  "+3"));
 733                                         points.insert (std::pair<float,string>( -8.0f,  "+6"));
 734                                         points.insert (std::pair<float,string>( -4.0f, "+10"));
 735                                         points.insert (std::pair<float,string>(  0.0f, "+14"));
 736                                         break;
 737                                 case MeterK20:
 738                                         overlay_midi = 0;
 739                                         points.insert (std::pair<float,string>(-60.0f, "-40"));
 740                                         points.insert (std::pair<float,string>(-50.0f, "-30"));
 741                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 742                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 743                                         points.insert (std::pair<float,string>(-26.0f,  "-6"));
 744                                         points.insert (std::pair<float,string>(-23.0f,  "-3"));
 745                                         points.insert (std::pair<float,string>(-20.0f,  " 0"));
 746                                         points.insert (std::pair<float,string>(-17.0f,  "+3"));
 747                                         points.insert (std::pair<float,string>(-14.0f,  "+6"));
 748                                         points.insert (std::pair<float,string>(-10.0f, "+10"));
 749                                         points.insert (std::pair<float,string>( -5.0f, "+15"));
 750                                         points.insert (std::pair<float,string>(  0.0f, "+20"));
 751                                         break;
 752                                 default:
 753                                 case MeterPeak:
 754                                 case MeterKrms:
 755                                         points.insert (std::pair<float,string>(  3.0f, "+3"));
 756                                         // no break
 757                                 case MeterPeak0dB:
 758                                         points.insert (std::pair<float,string>(-50.0f, "-50"));
 759                                         points.insert (std::pair<float,string>(-40.0f, "-40"));
 760                                         points.insert (std::pair<float,string>(-30.0f, "-30"));
 761                                         points.insert (std::pair<float,string>(-20.0f, "-20"));
 762                                         if (types.size() == 1) {
 763                                                 if (UIConfiguration::instance().get_meter_line_up_level() == MeteringLineUp24) {
 764                                                         points.insert (std::pair<float,string>(-24.0f, "-24"));
 765                                                 } else {
 766                                                         points.insert (std::pair<float,string>(-25.0f, "-25"));
 767                                                 }
 768                                                 points.insert (std::pair<float,string>(-15.0f, "-15"));
 769                                         }
 770                                         points.insert (std::pair<float,string>(-18.0f, "-18"));
 771                                         points.insert (std::pair<float,string>(-10.0f, "-10"));
 772                                         points.insert (std::pair<float,string>( -5.0f, "-5"));
 773                                         points.insert (std::pair<float,string>( -3.0f, "-3"));
 774                                         points.insert (std::pair<float,string>(  0.0f, "+0"));
 775                                         break;
 776
 777                                 case MeterIEC2EBU:
 778                                         overlay_midi = 3;
 779                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 780                                         points.insert (std::pair<float,string>(-26.0f, "-8"));
 781                                         points.insert (std::pair<float,string>(-22.0f, "-4"));
 782                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 783                                         points.insert (std::pair<float,string>(-14.0f, "+4"));
 784                                         points.insert (std::pair<float,string>(-10.0f, "+8"));
 785                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 786                                         break;
 787
 788                                 case MeterIEC2BBC:
 789                                         overlay_midi = 3;
 790                                         points.insert (std::pair<float,string>(-30.0f, " 1 "));
 791                                         points.insert (std::pair<float,string>(-26.0f, " 2 "));
 792                                         points.insert (std::pair<float,string>(-22.0f, " 3 "));
 793                                         points.insert (std::pair<float,string>(-18.0f, " 4 "));
 794                                         points.insert (std::pair<float,string>(-14.0f, " 5 "));
 795                                         points.insert (std::pair<float,string>(-10.0f, " 6 "));
 796                                         points.insert (std::pair<float,string>( -6.0f, " 7 "));
 797                                         break;
 798
 799                                 case MeterIEC1NOR:
 800                                         overlay_midi = 0;
 801                                         //points.insert (std::pair<float,string>(-60.0f, "-42"));
 802                                         points.insert (std::pair<float,string>(-54.0f, "-36"));
 803                                         points.insert (std::pair<float,string>(-48.0f, "-30"));
 804                                         points.insert (std::pair<float,string>(-42.0f, "-24"));
 805                                         points.insert (std::pair<float,string>(-36.0f, "-18"));
 806
 807                                         //points.insert (std::pair<float,string>(-33.0f, "-15"));
 808                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 809                                         //points.insert (std::pair<float,string>(-27.0f, "-9"));
 810                                         points.insert (std::pair<float,string>(-24.0f, "-6"));
 811                                         //points.insert (std::pair<float,string>(-21.0f, "-3"));
 812
 813                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 814                                         //points.insert (std::pair<float,string>(-15.0f, "+3"));
 815                                         points.insert (std::pair<float,string>(-12.0f, "+6"));
 816                                         points.insert (std::pair<float,string>( -9.0f, "+9"));
 817                                         //points.insert (std::pair<float,string>( -6.0f, "+12"));
 818                                         break;
 819
 820                                 case MeterIEC1DIN:
 821                                         overlay_midi = 2;
 822                                         //points.insert (std::pair<float,string>( -3.0f, "200%"));
 823                                         points.insert (std::pair<float,string>( -4.0f, "+5"));
 824                                         points.insert (std::pair<float,string>( -9.0f, "0")); // "100%";
 825                                         points.insert (std::pair<float,string>(-14.0f, "-5"));
 826                                         //points.insert (std::pair<float,string>(-15.0f, "50%"));
 827                                         //points.insert (std::pair<float,string>(-18.0f, "-9"));
 828                                         points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
 829                                         points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
 830                                         //points.insert (std::pair<float,string>(-35.0f, "5%")); // "5%"
 831                                         points.insert (std::pair<float,string>(-39.0f, "-30"));
 832                                         //points.insert (std::pair<float,string>(-49.0f, "1%"));
 833                                         points.insert (std::pair<float,string>(-59.0f, "-50"));
 834                                         break;
 835
 836                                 case MeterVU:
 837                                         overlay_midi = 0;
 838                                         points.insert (std::pair<float,string>(-17.0f, "+3"));
 839                                         points.insert (std::pair<float,string>(-18.0f, "+2"));
 840                                         points.insert (std::pair<float,string>(-19.0f, "+1"));
 841                                         points.insert (std::pair<float,string>(-20.0f, " 0"));
 842                                         points.insert (std::pair<float,string>(-21.0f, "-1"));
 843                                         points.insert (std::pair<float,string>(-22.0f, "-2"));
 844                                         points.insert (std::pair<float,string>(-23.0f, "-3"));
 845                                         points.insert (std::pair<float,string>(-25.0f, "-5"));
 846                                         points.insert (std::pair<float,string>(-27.0f, "-7"));
 847                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 848                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 849                                         break;
 850                         }
 851                         break;
 852                 case DataType::MIDI:
 853                         layout->set_attributes (midi_font_attributes);
 854                         if (types.size() == 1) {
 855                                 points.insert (std::pair<float,string>(  0, "0"));
 856                                 points.insert (std::pair<float,string>( 16,  "16"));
 857                                 points.insert (std::pair<float,string>( 32,  "32"));
 858                                 points.insert (std::pair<float,string>( 48,  "48"));
 859                                 points.insert (std::pair<float,string>( 64,  "64"));
 860                                 points.insert (std::pair<float,string>( 80,  "80"));
 861                                 points.insert (std::pair<float,string>( 96,  "96"));
 862                                 points.insert (std::pair<float,string>(100, "100"));
 863                                 points.insert (std::pair<float,string>(112, "112"));
 864                                 points.insert (std::pair<float,string>(127, "127"));
 865                         } else {
 866                                 switch (overlay_midi) {
 867                                         case 1:
 868                                                 /* labels that don't overlay with dBFS */
 869                                                 points.insert (std::pair<float,string>(  0, "0"));
 870                                                 points.insert (std::pair<float,string>( 24, "24"));
 871                                                 points.insert (std::pair<float,string>( 48, "48"));
 872                                                 points.insert (std::pair<float,string>( 72, "72"));
 873                                                 points.insert (std::pair<float,string>(127, "127"));
 874                                                 break;
 875                                         case 2:
 876                                                 /* labels that don't overlay with DIN */
 877                                                 points.insert (std::pair<float,string>(  0, "0"));
 878                                                 points.insert (std::pair<float,string>( 16,  "16"));
 879                                                 points.insert (std::pair<float,string>( 40,  "40"));
 880                                                 points.insert (std::pair<float,string>( 64,  "64"));
 881                                                 points.insert (std::pair<float,string>(112, "112"));
 882                                                 points.insert (std::pair<float,string>(127, "127"));
 883                                                 break;
 884                                         case 3:
 885                                                 /* labels that don't overlay with BBC nor EBU*/
 886                                                 points.insert (std::pair<float,string>(  0, "0"));
 887                                                 points.insert (std::pair<float,string>( 16, "16"));
 888                                                 points.insert (std::pair<float,string>( 56, "56"));
 889                                                 points.insert (std::pair<float,string>( 72, "72"));
 890                                                 points.insert (std::pair<float,string>(112, "112"));
 891                                                 points.insert (std::pair<float,string>(127, "127"));
 892                                         case 4:
 893                                                 /* labels that don't overlay with 0dBFS*/
 894                                                 points.insert (std::pair<float,string>(  0, "0"));
 895                                                 points.insert (std::pair<float,string>( 16, "16"));
 896                                                 points.insert (std::pair<float,string>( 48, "48"));
 897                                                 points.insert (std::pair<float,string>( 84, "84"));
 898                                                 points.insert (std::pair<float,string>(100, "100"));
 899                                         default:
 900                                                 break;
 901                                 }
 902                         }
 903                         break;
 904                 }
 905
 906                 gint pos = -1;
 907
 908                 for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
 909                         float fraction = 0;
 910                         bool align_center = background; // this is true for meterbridge meters w/ fixed background
 911                         switch (*i) {
 912                                 case DataType::AUDIO:
 913                                         fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 914
 915                                         pos = height - (gint) floor (height * fraction);
 916                                         pos = max (pos, 1);
 917                                         if (tickleft) {
 918                                                 cairo_move_to(cr, width-1.5, pos + .5);
 919                                                 cairo_line_to(cr, width, pos + .5);
 920                                                 cairo_stroke (cr);
 921                                         } else if (tickright) {
 922                                                 cairo_move_to(cr, 0, pos + .5);
 923                                                 cairo_line_to(cr, 1.5, pos + .5);
 924                                                 cairo_stroke (cr);
 925                                         }
 926                                         break;
 927                                 case DataType::MIDI:
 928                                         align_center = false; // don't bleed into legend
 929                                         fraction = (j->first) / 127.0;
 930                                         pos = 1 + height - (gint) lrintf (height * fraction);
 931                                         pos = min (pos, height);
 932                                         break;
 933                         }
 934
 935                         if (pos < 0) continue;
 936
 937                         layout->set_text(j->second.c_str());
 938
 939                         int tw, th;
 940                         layout->get_pixel_size(tw, th);
 941
 942                         int p = pos - (th / 2) - 1;
 943                         p = min (p, height - th);
 944                         p = max (p, 0);
 945
 946                         if (align_center) {
 947                                 cairo_move_to (cr, (width-tw)/2.0, p);
 948                         } else {
 949                                 cairo_move_to (cr, width-3-tw, p);
 950                         }
 951
 952                         cairo_set_line_width(cr, 0.12);
 953                         cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
 954                         pango_cairo_layout_path(cr, layout->gobj());
 955                         cairo_stroke_preserve (cr);
 956                         cairo_set_line_width(cr, 1.0);
 957
 958                         if ((*i) == DataType::AUDIO) {
 959                                 mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 960                         } else {
 961                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 962                         }
 963
 964                         pango_cairo_show_layout (cr, layout->gobj());
 965                         cairo_new_path(cr);
 966                 }
 967         }
 968
 969         // add legend
 970         if (types.size() == 1 || overlay_midi == 0) {
 971                 int tw, th;
 972                 layout->set_attributes (unit_font_attributes);
 973                 switch (types.at(0)) {
 974                         case DataType::AUDIO:
 975                                 switch (type) {
 976                                         case MeterK20:
 977                                                 layout->set_text("K20");
 978                                                 break;
 979                                         case MeterK14:
 980                                                 layout->set_text("K14");
 981                                                 break;
 982                                         case MeterK12:
 983                                                 layout->set_text("K12");
 984                                                 break;
 985                                         default:
 986                                         case MeterPeak:
 987                                         case MeterPeak0dB:
 988                                         case MeterKrms:
 989                                                 layout->set_text("dBFS");
 990                                                 break;
 991                                         case MeterIEC2EBU:
 992                                                 layout->set_text("EBU");
 993                                                 break;
 994                                         case MeterIEC2BBC:
 995                                                 layout->set_text("BBC");
 996                                                 break;
 997                                         case MeterIEC1DIN:
 998                                                 layout->set_text("DIN");
 999                                                 break;
1000                                         case MeterIEC1NOR:
1001                                                 layout->set_text("NOR");
1002                                                 break;
1003                                         case MeterVU:
1004                                                 layout->set_text("VU");
1005                                                 break;
1006                                 }
1007                                 layout->get_pixel_size(tw, th);
1008                                 break;
1009                         case DataType::MIDI:
1010                                 layout->set_text("mid");
1011                                 layout->get_pixel_size(tw, th);
1012                                 break;
1013                         default: // DataType::NIL;
1014                                 layout->set_text("");
1015                                 tw = th = 0;
1016                                 assert (0); // not reached
1017                                 break;
1018                 }
1019                 if (!background) {
1020                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
1021                 }
1022                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1023                 if (tickleft) {
1024                         cairo_move_to (cr, width - 2 - tw, height - th - 0.5);
1025                 } else {
1026                         cairo_move_to (cr, 2, height - th - 0.5);
1027                 }
1028                 pango_cairo_show_layout (cr, layout->gobj());
1029         }
1030
1031         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
1032
1033         cairo_destroy (cr);
1034         cairo_surface_destroy (surface);
1035
1036         return pattern;
1037 }
1038
1039 gint
1040 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
1041 {
1042         Glib::RefPtr<Gdk::Window> win (mta->get_window());
1043         cairo_t* cr;
1044
1045         cr = gdk_cairo_create (win->gobj());
1046
1047         /* clip to expose area */
1048
1049         gdk_cairo_rectangle (cr, &ev->area);
1050         cairo_clip (cr);
1051
1052         cairo_pattern_t* pattern;
1053         const MeterMatricsMapKey key (mta->get_name(), type, types_to_bit(types));
1054         MetricPatternMap::iterator i = ticks_patterns.find (key);
1055
1056         if (i == ticks_patterns.end()) {
1057                 pattern = meter_render_ticks (*mta, type, types);
1058                 ticks_patterns[key] = pattern;
1059         } else {
1060                 pattern = i->second;
1061         }
1062
1063         cairo_move_to (cr, 0, 0);
1064         cairo_set_source (cr, pattern);
1065
1066         gint width, height;
1067         win->get_size (width, height);
1068
1069         cairo_rectangle (cr, 0, 0, width, height);
1070         cairo_fill (cr);
1071
1072         cairo_destroy (cr);
1073
1074         return true;
1075 }
1076
1077 gint
1078 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
1079 {
1080         Glib::RefPtr<Gdk::Window> win (mma->get_window());
1081         cairo_t* cr;
1082
1083         cr = gdk_cairo_create (win->gobj());
1084
1085         /* clip to expose area */
1086
1087         gdk_cairo_rectangle (cr, &ev->area);
1088         cairo_clip (cr);
1089
1090         cairo_pattern_t* pattern;
1091         const MeterMatricsMapKey key (mma->get_name(), type, types_to_bit(types));
1092         MetricPatternMap::iterator i = metric_patterns.find (key);
1093
1094         if (i == metric_patterns.end()) {
1095                 pattern = meter_render_metrics (*mma, type, types);
1096                 metric_patterns[key] = pattern;
1097         } else {
1098                 pattern = i->second;
1099         }
1100
1101         cairo_move_to (cr, 0, 0);
1102
1103         gint width, height;
1104         win->get_size (width, height);
1105 #ifdef NO_OVERSAMPLE
1106         cairo_set_source (cr, pattern);
1107         cairo_rectangle (cr, 0, 0, width, height);
1108 #else
1109         cairo_scale(cr, 0.5, 0.5);
1110         cairo_set_antialias(cr, CAIRO_ANTIALIAS_BEST);
1111         cairo_set_source (cr, pattern);
1112         cairo_rectangle (cr, 0, 0, width * 2., height * 2.);
1113 #endif
1114
1115         cairo_fill (cr);
1116
1117         cairo_destroy (cr);
1118
1119         return true;
1120 }
1121
1122 void
1123 ArdourMeter::meter_clear_pattern_cache(int which) {
1124         MetricPatternMap::iterator i = metric_patterns.begin();
1125         MetricPatternMap::iterator j = ticks_patterns.begin();
1126
1127         while (i != metric_patterns.end()) {
1128                 int m = 4;
1129                 MeterMatricsMapKey const * const key = &(i->first);
1130                 std::string n = key->_n;
1131                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1132                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1133                 if (which & m) {
1134                         cairo_pattern_destroy(i->second);
1135                         metric_patterns.erase(i++);
1136                 } else {
1137                         ++i;
1138                 }
1139         }
1140
1141         while (j != ticks_patterns.end()) {
1142                 int m = 4;
1143                 MeterMatricsMapKey const * const key = &(j->first);
1144                 std::string n = key->_n;
1145                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1146                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1147                 if (which & m) {
1148                         cairo_pattern_destroy(j->second);
1149                         ticks_patterns.erase(j++);
1150                 } else {
1151                         ++j;
1152                 }
1153         }
1154         RedrawMetrics();
1155 }