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 ARDOUR_UI_UTILS;
  35 using namespace PBD;
  36 using namespace Gtk;
  37 using namespace Gtkmm2ext;
  38 using namespace std;
  39 using namespace ArdourMeter;
  40
  41 static const int max_pattern_metric_size = 1026;
  42
  43 /* signals used by meters */
  44
  45 sigc::signal<void> ArdourMeter::ResetAllPeakDisplays;
  46 sigc::signal<void,ARDOUR::Route*> ArdourMeter::ResetRoutePeakDisplays;
  47 sigc::signal<void,ARDOUR::RouteGroup*> ArdourMeter::ResetGroupPeakDisplays;
  48 sigc::signal<void> ArdourMeter::RedrawMetrics;
  49
  50 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> ArdourMeter::SetMeterTypeMulti;
  51
  52
  53 /* pattern cache */
  54
  55 struct MeterMatricsMapKey {
  56         MeterMatricsMapKey (std::string n, MeterType t, int dt)
  57                 : _n(n)
  58                 , _t(t)
  59                 , _dt(dt)
  60         {}
  61         inline bool operator<(const MeterMatricsMapKey& rhs) const {
  62                 return (_n < rhs._n) || (_n == rhs._n && _t < rhs._t) || (_n == rhs._n && _t == rhs._t && _dt < rhs._dt);
  63         }
  64         std::string _n;
  65         MeterType _t;
  66         int _dt;
  67 };
  68
  69 namespace ArdourMeter {
  70         typedef std::map<MeterMatricsMapKey, cairo_pattern_t*> MetricPatternMap;
  71 }
  72
  73 static ArdourMeter::MetricPatternMap ticks_patterns;
  74 static ArdourMeter::MetricPatternMap metric_patterns;
  75
  76
  77 const std::string
  78 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
  79 {
  80         switch (mt) {
  81                 case MeterPeak:
  82                         return _("Peak");
  83                         break;
  84                 case MeterPeak0dB:
  85                         return _("Peak 0dB");
  86                         break;
  87                 case MeterKrms:
  88                         return _("RMS + Peak");
  89                         break;
  90                 case MeterIEC1DIN:
  91                         return _("IEC1/DIN");
  92                         break;
  93                 case MeterIEC1NOR:
  94                         return _("IEC1/Nordic");
  95                         break;
  96                 case MeterIEC2BBC:
  97                         return _("IEC2/BBC");
  98                         break;
  99                 case MeterIEC2EBU:
 100                         return _("IEC2/EBU");
 101                         break;
 102                 case MeterK20:
 103                         return _("K20");
 104                         break;
 105                 case MeterK14:
 106                         return _("K14");
 107                         break;
 108                 case MeterK12:
 109                         return _("K12");
 110                         break;
 111                 case MeterVU:
 112                         return _("VU");
 113                         break;
 114                 default:
 115                         assert(0);
 116                         return _("???");
 117                         break;
 118         }
 119 }
 120
 121 static inline int types_to_bit (vector<ARDOUR::DataType> types) {
 122         int rv = 0;
 123         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 124                 rv |= 1 << (*i);
 125         }
 126         return rv;
 127 }
 128
 129 static inline float mtr_col_and_fract(
 130                 cairo_t* cr, Gdk::Color const * const c, const uint32_t peakcolor, const MeterType mt, const float val)
 131 {
 132         float fraction = 0;
 133
 134         switch (mt) {
 135                 default:
 136                 case MeterKrms:
 137                 case MeterPeak:
 138                         fraction = log_meter (val);
 139                         if (val >= 0 || val == -9) {
 140                                 cairo_set_source_rgb (cr,
 141                                                 UINT_RGBA_R_FLT(peakcolor),
 142                                                 UINT_RGBA_G_FLT(peakcolor),
 143                                                 UINT_RGBA_B_FLT(peakcolor));
 144                         } else {
 145                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 146                         }
 147                         break;
 148                 case MeterPeak0dB:
 149                         fraction = log_meter0dB (val);
 150                         if (val >= 0 || val == -9) {
 151                                 cairo_set_source_rgb (cr,
 152                                                 UINT_RGBA_R_FLT(peakcolor),
 153                                                 UINT_RGBA_G_FLT(peakcolor),
 154                                                 UINT_RGBA_B_FLT(peakcolor));
 155                         } else {
 156                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 157                         }
 158                         break;
 159                 case MeterIEC2BBC:
 160                 case MeterIEC2EBU:
 161                         fraction = meter_deflect_ppm(val);
 162                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 163                         break;
 164                 case MeterIEC1NOR:
 165                         fraction = meter_deflect_nordic(val);
 166 #if 0
 167                         if (val == -18.0) {
 168                                 cairo_set_source_rgb (cr,
 169                                                 UINT_RGBA_R_FLT(peakcolor),
 170                                                 UINT_RGBA_G_FLT(peakcolor),
 171                                                 UINT_RGBA_B_FLT(peakcolor));
 172                         } else {
 173                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 174                         }
 175 #else
 176                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 177 #endif
 178                         break;
 179                 case MeterIEC1DIN:
 180                         fraction = meter_deflect_din(val);
 181                         if (val == -9.0 || val == -15 || val == -18) {
 182                                 cairo_set_source_rgb (cr,
 183                                                 UINT_RGBA_R_FLT(peakcolor),
 184                                                 UINT_RGBA_G_FLT(peakcolor),
 185                                                 UINT_RGBA_B_FLT(peakcolor));
 186                         } else {
 187                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 188                         }
 189                         break;
 190                 case MeterVU:
 191                         fraction = meter_deflect_vu(val);
 192                         if (val >= -20.0) {
 193                                 cairo_set_source_rgb (cr,
 194                                                 UINT_RGBA_R_FLT(peakcolor),
 195                                                 UINT_RGBA_G_FLT(peakcolor),
 196                                                 UINT_RGBA_B_FLT(peakcolor));
 197                         } else {
 198                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 199                         }
 200                         break;
 201                 case MeterK20:
 202                         fraction = meter_deflect_k (val, 20);
 203                         if (val >= -16.0) {
 204                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 205                         } else if (val >= -20.0) {
 206                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 207                         } else {
 208                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 209                         }
 210                         break;
 211                 case MeterK14:
 212                         if (val >= -10.0) {
 213                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 214                         } else if (val >= -14.0) {
 215                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 216                         } else {
 217                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 218                         }
 219                         fraction = meter_deflect_k (val, 14);
 220                         break;
 221                 case MeterK12:
 222                         if (val >= -8.0) {
 223                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 224                         } else if (val >= -12.0) {
 225                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 226                         } else {
 227                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 228                         }
 229                         fraction = meter_deflect_k (val, 12);
 230                         break;
 231         }
 232         return fraction;
 233 }
 234
 235 static void mtr_red_stripe(cairo_t* cr, float l, float w, int h, float top, float bot) {
 236         if (w <= 0) return;
 237         int t = h - floorf (h * (top));
 238         int b = h - floorf (h * (bot));
 239         cairo_set_source_rgba (cr, .75, 0, 0, 0.75);
 240         cairo_rectangle (cr, l, t + .5, w, b - t);
 241         cairo_fill (cr);
 242 }
 243
 244 static void set_bg_color (Gtk::Widget& w, cairo_t* cr, MeterType type) {
 245         double r,g,b,a;
 246         switch(type) {
 247                 case MeterVU:
 248                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip vu bg"), r, g, b, a);
 249                         break;
 250                 case MeterIEC1DIN:
 251                 case MeterIEC1NOR:
 252                 case MeterIEC2BBC:
 253                 case MeterIEC2EBU:
 254                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip ppm bg"), r, g, b, a);
 255                         break;
 256                 case MeterK12:
 257                 case MeterK14:
 258                 case MeterK20:
 259                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip dpm bg"), r, g, b, a);
 260                         break;
 261                 default:
 262                         {
 263                         Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 264                         r = c.get_red_p();
 265                         g = c.get_green_p();
 266                         b = c.get_blue_p();
 267                         }
 268                         break;
 269         }
 270         cairo_set_source_rgb (cr, r, g, b);
 271 }
 272
 273 static void set_fg_color(Gtk::Widget&, MeterType type, Gdk::Color * c) {
 274         double r,g,b,a;
 275         switch(type) {
 276                 case MeterVU:
 277                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip vu fg"), r, g, b, a);
 278                         break;
 279                 case MeterIEC1DIN:
 280                 case MeterIEC1NOR:
 281                 case MeterIEC2BBC:
 282                 case MeterIEC2EBU:
 283                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip ppm fg"), r, g, b, a);
 284                         break;
 285                 default:
 286                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip dpm fg"), r, g, b, a);
 287                         break;
 288         }
 289         c->set_rgb_p (r, g, b);
 290 }
 291
 292 static cairo_pattern_t*
 293 meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
 294 {
 295         Glib::RefPtr<Gdk::Window> win (w.get_window());
 296
 297         bool background;
 298         bool tickleft, tickright;
 299         gint width, height;
 300         win->get_size (width, height);
 301         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 302         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 303         background = types.size() == 0 || tickleft || tickright;
 304
 305         float box_l=0;
 306         float box_w=0;
 307 #define PX_SCALE(pxmin, dflt) rint(std::max((double)pxmin, (double)dflt * ARDOUR_UI::ui_scale))
 308         if (tickleft) {
 309                 if (w.get_name().substr(0, 3) == "Bar") {
 310                         box_w = PX_SCALE(2, 2);
 311                         box_l = width - box_w;
 312                 } else if (w.get_name().substr(0, 4) == "Mark") {
 313                         box_w = PX_SCALE(2, 2);
 314                         box_l = width - box_w;
 315                         background = false;
 316                 }
 317         } else if (tickright) {
 318                 if (w.get_name().substr(0, 3) == "Bar") {
 319                         box_l = 0; box_w = PX_SCALE(2, 2);
 320                 } else if (w.get_name().substr(0, 4) == "Mark") {
 321                         box_l = 0; box_w = PX_SCALE(2, 2);
 322                         background = false;
 323                 }
 324         } else {
 325                 box_l = 0; box_w = width;
 326         }
 327 #undef PX_SCALE
 328
 329         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 330         cairo_t* cr = cairo_create (surface);
 331
 332         cairo_move_to (cr, 0, 0);
 333         cairo_rectangle (cr, 0, 0, width, height);
 334
 335         if (background) {
 336                 /* meterbridge */
 337                 set_bg_color(w, cr, type);
 338         } else {
 339                 /* mixer */
 340                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 341                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 342         }
 343         cairo_fill (cr);
 344
 345         height = min(max_pattern_metric_size, height);
 346         uint32_t peakcolor = ARDOUR_UI::config()->color ("meterbridge peaklabel");
 347
 348         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 349
 350                 Gdk::Color c;
 351                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 352                         /* we're overlaying more than 1 set of marks, so use different colours */
 353                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 354                 } else if (background) {
 355                         set_fg_color(w, type, &c);
 356                 } else {
 357                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 358                 }
 359
 360                 // tick-maker position in dBFS, line-thickness
 361                 std::map<float,float> points;
 362
 363                 switch (*i) {
 364                 case DataType::AUDIO:
 365
 366                         switch (type) {
 367                                 case MeterK12:
 368                                         points.insert (std::pair<float,float>(-52.0f, 1.0));
 369                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 370                                         points.insert (std::pair<float,float>(-32.0f, 1.0));
 371                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 372                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 373                                         points.insert (std::pair<float,float>(-15.0f, 1.0));
 374                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 375                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 376                                         points.insert (std::pair<float,float>( -8.0f, 0.8));
 377                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 378                                         points.insert (std::pair<float,float>( -3.0f, 1.0));
 379                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 380                                         break;
 381                                 case MeterK14:
 382                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 383                                         points.insert (std::pair<float,float>(-44.0f, 1.0));
 384                                         points.insert (std::pair<float,float>(-34.0f, 1.0));
 385                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 386                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 387                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 388                                         points.insert (std::pair<float,float>(-14.0f, 1.0)); //   0
 389                                         points.insert (std::pair<float,float>(-11.0f, 1.0)); //  +3
 390                                         points.insert (std::pair<float,float>(-10.0f, 0.8)); //  +4
 391                                         points.insert (std::pair<float,float>( -8.0f, 1.0)); //  +6
 392                                         points.insert (std::pair<float,float>( -4.0f, 1.0)); // +10
 393                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 394                                         break;
 395                                 case MeterK20:
 396                                         points.insert (std::pair<float,float>(-60.0f, 1.0));
 397                                         points.insert (std::pair<float,float>(-50.0f, 1.0));
 398                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 399                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 400                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 401                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 402                                         points.insert (std::pair<float,float>(-20.0f, 1.0)); //  0
 403                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 404                                         points.insert (std::pair<float,float>(-16.0f, 0.8));
 405                                         points.insert (std::pair<float,float>(-14.0f, 1.0)); // +6
 406                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 407                                         points.insert (std::pair<float,float>( -5.0f, 1.0));
 408                                         points.insert (std::pair<float,float>(  0.0f, 1.0)); //+20
 409                                         break;
 410                                 case MeterIEC2EBU:
 411                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 412                                         points.insert (std::pair<float,float>(-28.0f, 0.5));
 413                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 414                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 415                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 416                                         points.insert (std::pair<float,float>(-20.0f, 0.5));
 417                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 418                                         points.insert (std::pair<float,float>(-16.0f, 0.5));
 419                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 420                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 421                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 422                                         points.insert (std::pair<float,float>( -9.0f, 0.8));
 423                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 424                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 425                                         break;
 426                                 case MeterIEC2BBC:
 427                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 428                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 429                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 430                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 431                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 432                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 433                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 434                                         break;
 435                                 case MeterIEC1NOR:
 436                                         points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
 437                                         points.insert (std::pair<float,float>(-57.0f, 0.5));
 438                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 439                                         points.insert (std::pair<float,float>(-51.0f, 0.5));
 440                                         points.insert (std::pair<float,float>(-48.0f, 1.0));
 441                                         points.insert (std::pair<float,float>(-45.0f, 0.5));
 442                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 443                                         points.insert (std::pair<float,float>(-39.0f, 0.5));
 444                                         points.insert (std::pair<float,float>(-36.0f, 1.0));
 445
 446                                         points.insert (std::pair<float,float>(-33.0f, 0.5));
 447                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 448                                         points.insert (std::pair<float,float>(-27.0f, 0.5));
 449                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 450                                         points.insert (std::pair<float,float>(-21.0f, 0.5));
 451
 452                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 453                                         points.insert (std::pair<float,float>(-15.0f, 0.5));
 454                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 455                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 456                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 457                                         mtr_red_stripe(cr, box_l, box_w, height,
 458                                                         meter_deflect_nordic(-6.0f), meter_deflect_nordic(-12.0f));
 459                                         break;
 460                                 case MeterIEC1DIN:
 461                                         points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
 462                                         points.insert (std::pair<float,float>( -4.0f, 1.0));
 463                                         points.insert (std::pair<float,float>( -5.0f, 0.5));
 464                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 465                                         points.insert (std::pair<float,float>( -7.0f, 0.5));
 466                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 467                                         points.insert (std::pair<float,float>( -9.0f, 1.0)); // "100%"
 468                                         points.insert (std::pair<float,float>(-10.0f, 0.5));
 469                                         points.insert (std::pair<float,float>(-11.0f, 0.5));
 470                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 471                                         points.insert (std::pair<float,float>(-13.0f, 0.5));
 472                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 473                                         points.insert (std::pair<float,float>(-15.0f, 0.8)); // "50%"
 474                                         points.insert (std::pair<float,float>(-18.0f, 0.8)); // "-9"
 475                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 476                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 477                                         points.insert (std::pair<float,float>(-29.0f, 1.0)); // "-20", "10%"
 478                                         points.insert (std::pair<float,float>(-34.0f, 0.5)); // -25
 479                                         //points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
 480                                         points.insert (std::pair<float,float>(-39.0f, 1.0));
 481                                         points.insert (std::pair<float,float>(-49.0f, 1.0));
 482                                         points.insert (std::pair<float,float>(-54.0f, 0.5));
 483                                         points.insert (std::pair<float,float>(-59.0f, 1.0));
 484                                         mtr_red_stripe(cr, box_l, box_w, height,
 485                                                         meter_deflect_din(0.0f), meter_deflect_din(-9.0f));
 486                                         break;
 487                                 case MeterVU:
 488                                         points.insert (std::pair<float,float>(-17.0f, 1.0)); //+3 VU
 489                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 490                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 491                                         points.insert (std::pair<float,float>(-19.5f, 0.5));
 492                                         points.insert (std::pair<float,float>(-20.0f, 1.0)); // 0 VU
 493                                         points.insert (std::pair<float,float>(-20.5f, 0.5));
 494                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 495                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 496                                         points.insert (std::pair<float,float>(-23.0f, 1.0)); //-3 VU
 497                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 498                                         points.insert (std::pair<float,float>(-25.0f, 1.0));
 499                                         points.insert (std::pair<float,float>(-26.0f, 0.5));
 500                                         points.insert (std::pair<float,float>(-27.0f, 1.0)); //-7 VU
 501                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 502                                         points.insert (std::pair<float,float>(-35.0f, 0.5));
 503                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 504                                         mtr_red_stripe(cr, box_l, box_w, height,
 505                                                         meter_deflect_vu(-17.0f), meter_deflect_vu(-20.0f));
 506                                         break;
 507
 508                                 default:
 509                                         points.insert (std::pair<float,float>(  0, 1.0));
 510                                         points.insert (std::pair<float,float>(  1, 0.5));
 511                                         points.insert (std::pair<float,float>(  2, 0.5));
 512                                         points.insert (std::pair<float,float>(  3, 1.0));
 513                                         points.insert (std::pair<float,float>(  4, 0.5));
 514                                         points.insert (std::pair<float,float>(  5, 0.5));
 515                                         // no break
 516                                 case MeterPeak0dB:
 517                                         points.insert (std::pair<float,float>(-60, 0.5));
 518                                         points.insert (std::pair<float,float>(-50, 1.0));
 519                                         points.insert (std::pair<float,float>(-40, 1.0));
 520                                         points.insert (std::pair<float,float>(-30, 1.0));
 521                                         if (ARDOUR_UI::config()->get_meter_line_up_level() == MeteringLineUp24) {
 522                                                 points.insert (std::pair<float,float>(-24, 1.0));
 523                                         } else {
 524                                                 points.insert (std::pair<float,float>(-25, 1.0));
 525                                         }
 526                                         points.insert (std::pair<float,float>(-20, 1.0));
 527
 528                                         points.insert (std::pair<float,float>(-19, 0.5));
 529                                         points.insert (std::pair<float,float>(-18, 1.0));
 530                                         points.insert (std::pair<float,float>(-17, 0.5));
 531                                         points.insert (std::pair<float,float>(-16, 0.5));
 532                                         points.insert (std::pair<float,float>(-15, 1.0));
 533
 534                                         points.insert (std::pair<float,float>(-14, 0.5));
 535                                         points.insert (std::pair<float,float>(-13, 0.5));
 536                                         points.insert (std::pair<float,float>(-12, 0.5));
 537                                         points.insert (std::pair<float,float>(-11, 0.5));
 538                                         points.insert (std::pair<float,float>(-10, 1.0));
 539
 540                                         points.insert (std::pair<float,float>( -9, 1.0));
 541                                         points.insert (std::pair<float,float>( -8, 0.5));
 542                                         points.insert (std::pair<float,float>( -7, 0.5));
 543                                         points.insert (std::pair<float,float>( -6, 0.5));
 544                                         points.insert (std::pair<float,float>( -5, 1.0));
 545                                         points.insert (std::pair<float,float>( -4, 0.5));
 546                                         points.insert (std::pair<float,float>( -3, 1.0));
 547                                         points.insert (std::pair<float,float>( -2, 0.5));
 548                                         points.insert (std::pair<float,float>( -1, 0.5));
 549                                         break;
 550                         }
 551                         break;
 552
 553                 case DataType::MIDI:
 554                         points.insert (std::pair<float,float>(  0, 1.0));
 555                         points.insert (std::pair<float,float>( 16, 0.5));
 556                         points.insert (std::pair<float,float>( 32, 0.5));
 557                         points.insert (std::pair<float,float>( 48, 0.5));
 558                         points.insert (std::pair<float,float>( 64, 1.0));
 559                         points.insert (std::pair<float,float>( 80, 0.5));
 560                         points.insert (std::pair<float,float>( 96, 0.5));
 561                         points.insert (std::pair<float,float>(100, 1.0));
 562                         points.insert (std::pair<float,float>(112, 0.5));
 563                         points.insert (std::pair<float,float>(127, 1.0));
 564                         break;
 565                 }
 566
 567                 for (std::map<float,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 568                         cairo_set_line_width (cr, (j->second));
 569
 570                         float fraction = 0;
 571                         gint pos;
 572
 573                         switch (*i) {
 574                         case DataType::AUDIO:
 575                                 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 576
 577                                 pos = height - (gint) floor (height * fraction);
 578                                 pos = max (pos, 1);
 579                                 cairo_move_to(cr, 0, pos + .5);
 580                                 cairo_line_to(cr, width, pos + .5);
 581                                 cairo_stroke (cr);
 582                                 break;
 583                         case DataType::MIDI:
 584                                 fraction = (j->first) / 127.0;
 585                                 pos = 1 + height - (gint) floor (height * fraction);
 586                                 pos = min (pos, height);
 587                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 588                                 cairo_arc(cr, width * .5, pos + .5, 1.0, 0, 2 * M_PI);
 589                                 cairo_fill(cr);
 590                                 break;
 591                         }
 592                 }
 593         }
 594
 595         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 596
 597         cairo_destroy (cr);
 598         cairo_surface_destroy (surface);
 599
 600         return pattern;
 601 }
 602
 603 static cairo_pattern_t*
 604 meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
 605 {
 606         Glib::RefPtr<Gdk::Window> win (w.get_window());
 607
 608         bool tickleft, tickright;
 609         bool background;
 610         int overlay_midi = 1;
 611         gint width, height;
 612         win->get_size (width, height);
 613
 614         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 615         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 616         background = types.size() == 0 || tickleft || tickright;
 617
 618         if (!tickleft && !tickright) {
 619                 tickright = true;
 620         }
 621
 622         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 623         cairo_t* cr = cairo_create (surface);
 624         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 625
 626         Pango::AttrList audio_font_attributes;
 627         Pango::AttrList midi_font_attributes;
 628         Pango::AttrList unit_font_attributes;
 629
 630         Pango::AttrFontDesc* font_attr;
 631         Pango::FontDescription font;
 632
 633         font = Pango::FontDescription (ARDOUR_UI::config()->get_SmallMonospaceFont());
 634 #ifdef __APPLE__
 635         const double fixfontsize = 1.125;
 636 #else
 637         // counter-act global font-scaling.
 638         const double fixfontsize = std::min(1.0, 0.9 / sqrtf(ARDOUR_UI::ui_scale));
 639 #endif
 640
 641         font.set_weight (Pango::WEIGHT_NORMAL);
 642         font.set_size (8.0 * fixfontsize * PANGO_SCALE);
 643         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 644         audio_font_attributes.change (*font_attr);
 645         delete font_attr;
 646
 647         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 648         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 649         font.set_size (7.0 * fixfontsize * PANGO_SCALE);
 650         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 651         midi_font_attributes.change (*font_attr);
 652         delete font_attr;
 653
 654         font.set_size (6.0 * fixfontsize * PANGO_SCALE);
 655         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 656         unit_font_attributes.change (*font_attr);
 657         delete font_attr;
 658
 659         cairo_move_to (cr, 0, 0);
 660         cairo_rectangle (cr, 0, 0, width, height);
 661         if (background) {
 662                 /* meterbridge */
 663                 set_bg_color(w, cr, type);
 664         } else {
 665                 /* mixer */
 666                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 667                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 668         }
 669         cairo_fill (cr);
 670
 671         cairo_set_line_width (cr, 1.0);
 672
 673         height = min(max_pattern_metric_size, height);
 674         uint32_t peakcolor = ARDOUR_UI::config()->color ("meterbridge peaklabel");
 675         Gdk::Color c; // default text color
 676
 677         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 678
 679                 if (types.size() > 1 && (*i) == DataType::MIDI && overlay_midi == 0) {
 680                         continue;
 681                 }
 682
 683                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 684                         /* we're overlaying more than 1 set of marks, so use different colours */
 685                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 686                 } else if (background) {
 687                         set_fg_color(w, type, &c);
 688                 } else {
 689                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 690                 }
 691
 692                 std::map<float,string> points; // map: label-pos in dBFS, label-text
 693
 694                 switch (*i) {
 695                 case DataType::AUDIO:
 696                         layout->set_attributes (audio_font_attributes);
 697                         if (type == MeterPeak0dB) {
 698                                 overlay_midi = 4;
 699                         }
 700                         switch (type) {
 701                                 case MeterK12:
 702                                         overlay_midi = 0;
 703                                         points.insert (std::pair<float,string>(-52.0f, "-40"));
 704                                         points.insert (std::pair<float,string>(-42.0f, "-30"));
 705                                         points.insert (std::pair<float,string>(-32.0f, "-20"));
 706                                         points.insert (std::pair<float,string>(-22.0f, "-10"));
 707                                         points.insert (std::pair<float,string>(-18.0f,  "-6"));
 708                                         points.insert (std::pair<float,string>(-15.0f,  "-3"));
 709                                         points.insert (std::pair<float,string>(-12.0f,  " 0"));
 710                                         points.insert (std::pair<float,string>( -9.0f,  "+3"));
 711                                         points.insert (std::pair<float,string>( -6.0f,  "+6"));
 712                                         points.insert (std::pair<float,string>( -3.0f,  "+9"));
 713                                         points.insert (std::pair<float,string>(  0.0f, "+12"));
 714                                         break;
 715                                 case MeterK14:
 716                                         overlay_midi = 0;
 717                                         points.insert (std::pair<float,string>(-54.0f, "-40"));
 718                                         points.insert (std::pair<float,string>(-44.0f, "-30"));
 719                                         points.insert (std::pair<float,string>(-34.0f, "-20"));
 720                                         points.insert (std::pair<float,string>(-24.0f, "-10"));
 721                                         points.insert (std::pair<float,string>(-20.0f,  "-6"));
 722                                         points.insert (std::pair<float,string>(-17.0f,  "-3"));
 723                                         points.insert (std::pair<float,string>(-14.0f,  " 0"));
 724                                         points.insert (std::pair<float,string>(-11.0f,  "+3"));
 725                                         points.insert (std::pair<float,string>( -8.0f,  "+6"));
 726                                         points.insert (std::pair<float,string>( -4.0f, "+10"));
 727                                         points.insert (std::pair<float,string>(  0.0f, "+14"));
 728                                         break;
 729                                 case MeterK20:
 730                                         overlay_midi = 0;
 731                                         points.insert (std::pair<float,string>(-60.0f, "-40"));
 732                                         points.insert (std::pair<float,string>(-50.0f, "-30"));
 733                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 734                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 735                                         points.insert (std::pair<float,string>(-26.0f,  "-6"));
 736                                         points.insert (std::pair<float,string>(-23.0f,  "-3"));
 737                                         points.insert (std::pair<float,string>(-20.0f,  " 0"));
 738                                         points.insert (std::pair<float,string>(-17.0f,  "+3"));
 739                                         points.insert (std::pair<float,string>(-14.0f,  "+6"));
 740                                         points.insert (std::pair<float,string>(-10.0f, "+10"));
 741                                         points.insert (std::pair<float,string>( -5.0f, "+15"));
 742                                         points.insert (std::pair<float,string>(  0.0f, "+20"));
 743                                         break;
 744                                 default:
 745                                 case MeterPeak:
 746                                 case MeterKrms:
 747                                         points.insert (std::pair<float,string>(  3.0f, "+3"));
 748                                         // no break
 749                                 case MeterPeak0dB:
 750                                         points.insert (std::pair<float,string>(-50.0f, "-50"));
 751                                         points.insert (std::pair<float,string>(-40.0f, "-40"));
 752                                         points.insert (std::pair<float,string>(-30.0f, "-30"));
 753                                         points.insert (std::pair<float,string>(-20.0f, "-20"));
 754                                         if (types.size() == 1) {
 755                                                 if (ARDOUR_UI::config()->get_meter_line_up_level() == MeteringLineUp24) {
 756                                                         points.insert (std::pair<float,string>(-24.0f, "-24"));
 757                                                 } else {
 758                                                         points.insert (std::pair<float,string>(-25.0f, "-25"));
 759                                                 }
 760                                                 points.insert (std::pair<float,string>(-15.0f, "-15"));
 761                                         }
 762                                         points.insert (std::pair<float,string>(-18.0f, "-18"));
 763                                         points.insert (std::pair<float,string>(-10.0f, "-10"));
 764                                         points.insert (std::pair<float,string>( -5.0f, "-5"));
 765                                         points.insert (std::pair<float,string>( -3.0f, "-3"));
 766                                         points.insert (std::pair<float,string>(  0.0f, "+0"));
 767                                         break;
 768
 769                                 case MeterIEC2EBU:
 770                                         overlay_midi = 3;
 771                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 772                                         points.insert (std::pair<float,string>(-26.0f, "-8"));
 773                                         points.insert (std::pair<float,string>(-22.0f, "-4"));
 774                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 775                                         points.insert (std::pair<float,string>(-14.0f, "+4"));
 776                                         points.insert (std::pair<float,string>(-10.0f, "+8"));
 777                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 778                                         break;
 779
 780                                 case MeterIEC2BBC:
 781                                         overlay_midi = 3;
 782                                         points.insert (std::pair<float,string>(-30.0f, " 1 "));
 783                                         points.insert (std::pair<float,string>(-26.0f, " 2 "));
 784                                         points.insert (std::pair<float,string>(-22.0f, " 3 "));
 785                                         points.insert (std::pair<float,string>(-18.0f, " 4 "));
 786                                         points.insert (std::pair<float,string>(-14.0f, " 5 "));
 787                                         points.insert (std::pair<float,string>(-10.0f, " 6 "));
 788                                         points.insert (std::pair<float,string>( -6.0f, " 7 "));
 789                                         break;
 790
 791                                 case MeterIEC1NOR:
 792                                         overlay_midi = 0;
 793                                         //points.insert (std::pair<float,string>(-60.0f, "-42"));
 794                                         points.insert (std::pair<float,string>(-54.0f, "-36"));
 795                                         points.insert (std::pair<float,string>(-48.0f, "-30"));
 796                                         points.insert (std::pair<float,string>(-42.0f, "-24"));
 797                                         points.insert (std::pair<float,string>(-36.0f, "-18"));
 798
 799                                         //points.insert (std::pair<float,string>(-33.0f, "-15"));
 800                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 801                                         //points.insert (std::pair<float,string>(-27.0f, "-9"));
 802                                         points.insert (std::pair<float,string>(-24.0f, "-6"));
 803                                         //points.insert (std::pair<float,string>(-21.0f, "-3"));
 804
 805                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 806                                         //points.insert (std::pair<float,string>(-15.0f, "+3"));
 807                                         points.insert (std::pair<float,string>(-12.0f, "+6"));
 808                                         points.insert (std::pair<float,string>( -9.0f, "+9"));
 809                                         //points.insert (std::pair<float,string>( -6.0f, "+12"));
 810                                         break;
 811
 812                                 case MeterIEC1DIN:
 813                                         overlay_midi = 2;
 814                                         //points.insert (std::pair<float,string>( -3.0f, "200%"));
 815                                         points.insert (std::pair<float,string>( -4.0f, "+5"));
 816                                         points.insert (std::pair<float,string>( -9.0f, "0")); // "100%";
 817                                         points.insert (std::pair<float,string>(-14.0f, "-5"));
 818                                         //points.insert (std::pair<float,string>(-15.0f, "50%"));
 819                                         //points.insert (std::pair<float,string>(-18.0f, "-9"));
 820                                         points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
 821                                         points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
 822                                         //points.insert (std::pair<float,string>(-35.0f, "5%")); // "5%"
 823                                         points.insert (std::pair<float,string>(-39.0f, "-30"));
 824                                         //points.insert (std::pair<float,string>(-49.0f, "1%"));
 825                                         points.insert (std::pair<float,string>(-59.0f, "-50"));
 826                                         break;
 827
 828                                 case MeterVU:
 829                                         overlay_midi = 0;
 830                                         points.insert (std::pair<float,string>(-17.0f, "+3"));
 831                                         points.insert (std::pair<float,string>(-18.0f, "+2"));
 832                                         points.insert (std::pair<float,string>(-19.0f, "+1"));
 833                                         points.insert (std::pair<float,string>(-20.0f, " 0"));
 834                                         points.insert (std::pair<float,string>(-21.0f, "-1"));
 835                                         points.insert (std::pair<float,string>(-22.0f, "-2"));
 836                                         points.insert (std::pair<float,string>(-23.0f, "-3"));
 837                                         points.insert (std::pair<float,string>(-25.0f, "-5"));
 838                                         points.insert (std::pair<float,string>(-27.0f, "-7"));
 839                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 840                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 841                                         break;
 842                         }
 843                         break;
 844                 case DataType::MIDI:
 845                         layout->set_attributes (midi_font_attributes);
 846                         if (types.size() == 1) {
 847                                 points.insert (std::pair<float,string>(  0, "0"));
 848                                 points.insert (std::pair<float,string>( 16,  "16"));
 849                                 points.insert (std::pair<float,string>( 32,  "32"));
 850                                 points.insert (std::pair<float,string>( 48,  "48"));
 851                                 points.insert (std::pair<float,string>( 64,  "64"));
 852                                 points.insert (std::pair<float,string>( 80,  "80"));
 853                                 points.insert (std::pair<float,string>( 96,  "96"));
 854                                 points.insert (std::pair<float,string>(100, "100"));
 855                                 points.insert (std::pair<float,string>(112, "112"));
 856                                 points.insert (std::pair<float,string>(127, "127"));
 857                         } else {
 858                                 switch (overlay_midi) {
 859                                         case 1:
 860                                                 /* labels that don't overlay with dBFS */
 861                                                 points.insert (std::pair<float,string>(  0, "0"));
 862                                                 points.insert (std::pair<float,string>( 24, "24"));
 863                                                 points.insert (std::pair<float,string>( 48, "48"));
 864                                                 points.insert (std::pair<float,string>( 72, "72"));
 865                                                 points.insert (std::pair<float,string>(127, "127"));
 866                                                 break;
 867                                         case 2:
 868                                                 /* labels that don't overlay with DIN */
 869                                                 points.insert (std::pair<float,string>(  0, "0"));
 870                                                 points.insert (std::pair<float,string>( 16,  "16"));
 871                                                 points.insert (std::pair<float,string>( 40,  "40"));
 872                                                 points.insert (std::pair<float,string>( 64,  "64"));
 873                                                 points.insert (std::pair<float,string>(112, "112"));
 874                                                 points.insert (std::pair<float,string>(127, "127"));
 875                                                 break;
 876                                         case 3:
 877                                                 /* labels that don't overlay with BBC nor EBU*/
 878                                                 points.insert (std::pair<float,string>(  0, "0"));
 879                                                 points.insert (std::pair<float,string>( 16, "16"));
 880                                                 points.insert (std::pair<float,string>( 56, "56"));
 881                                                 points.insert (std::pair<float,string>( 72, "72"));
 882                                                 points.insert (std::pair<float,string>(112, "112"));
 883                                                 points.insert (std::pair<float,string>(127, "127"));
 884                                         case 4:
 885                                                 /* labels that don't overlay with 0dBFS*/
 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>( 48, "48"));
 889                                                 points.insert (std::pair<float,string>( 84, "84"));
 890                                                 points.insert (std::pair<float,string>(100, "100"));
 891                                         default:
 892                                                 break;
 893                                 }
 894                         }
 895                         break;
 896                 }
 897
 898                 gint pos = -1;
 899
 900                 for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
 901                         float fraction = 0;
 902                         bool align_center = background; // this is true for meterbridge meters w/ fixed background
 903                         switch (*i) {
 904                                 case DataType::AUDIO:
 905                                         fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 906
 907                                         pos = height - (gint) floor (height * fraction);
 908                                         pos = max (pos, 1);
 909                                         if (tickleft) {
 910                                                 cairo_move_to(cr, width-1.5, pos + .5);
 911                                                 cairo_line_to(cr, width, pos + .5);
 912                                                 cairo_stroke (cr);
 913                                         } else if (tickright) {
 914                                                 cairo_move_to(cr, 0, pos + .5);
 915                                                 cairo_line_to(cr, 1.5, pos + .5);
 916                                                 cairo_stroke (cr);
 917                                         }
 918                                         break;
 919                                 case DataType::MIDI:
 920                                         align_center = false; // don't bleed into legend
 921                                         fraction = (j->first) / 127.0;
 922                                         pos = 1 + height - (gint) lrintf (height * fraction);
 923                                         pos = min (pos, height);
 924                                         break;
 925                         }
 926
 927                         if (pos < 0) continue;
 928
 929                         layout->set_text(j->second.c_str());
 930
 931                         int tw, th;
 932                         layout->get_pixel_size(tw, th);
 933
 934                         int p = pos - (th / 2) - 1;
 935                         p = min (p, height - th);
 936                         p = max (p, 0);
 937
 938                         if (align_center) {
 939                                 cairo_move_to (cr, (width-tw)/2.0, p);
 940                         } else {
 941                                 cairo_move_to (cr, width-3-tw, p);
 942                         }
 943
 944                         cairo_set_line_width(cr, 0.12);
 945                         cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
 946                         pango_cairo_layout_path(cr, layout->gobj());
 947                         cairo_stroke_preserve (cr);
 948                         cairo_set_line_width(cr, 1.0);
 949
 950                         if ((*i) == DataType::AUDIO) {
 951                                 mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 952                         } else {
 953                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 954                         }
 955
 956                         pango_cairo_show_layout (cr, layout->gobj());
 957                         cairo_new_path(cr);
 958                 }
 959         }
 960
 961         // add legend
 962         if (types.size() == 1 || overlay_midi == 0) {
 963                 int tw, th;
 964                 layout->set_attributes (unit_font_attributes);
 965                 switch (types.at(0)) {
 966                         case DataType::AUDIO:
 967                                 switch (type) {
 968                                         case MeterK20:
 969                                                 layout->set_text("K20");
 970                                                 break;
 971                                         case MeterK14:
 972                                                 layout->set_text("K14");
 973                                                 break;
 974                                         case MeterK12:
 975                                                 layout->set_text("K12");
 976                                                 break;
 977                                         default:
 978                                         case MeterPeak:
 979                                         case MeterPeak0dB:
 980                                         case MeterKrms:
 981                                                 layout->set_text("dBFS");
 982                                                 break;
 983                                         case MeterIEC2EBU:
 984                                                 layout->set_text("EBU");
 985                                                 break;
 986                                         case MeterIEC2BBC:
 987                                                 layout->set_text("BBC");
 988                                                 break;
 989                                         case MeterIEC1DIN:
 990                                                 layout->set_text("DIN");
 991                                                 break;
 992                                         case MeterIEC1NOR:
 993                                                 layout->set_text("NOR");
 994                                                 break;
 995                                         case MeterVU:
 996                                                 layout->set_text("VU");
 997                                                 break;
 998                                 }
 999                                 layout->get_pixel_size(tw, th);
1000                                 break;
1001                         case DataType::MIDI:
1002                                 layout->set_text("mid");
1003                                 layout->get_pixel_size(tw, th);
1004                                 break;
1005                 }
1006                 if (!background) {
1007                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
1008                 }
1009                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1010                 if (tickleft) {
1011                         cairo_move_to (cr, width - 2 - tw, height - th - 0.5);
1012                 } else {
1013                         cairo_move_to (cr, 2, height - th - 0.5);
1014                 }
1015                 pango_cairo_show_layout (cr, layout->gobj());
1016         }
1017
1018         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
1019
1020         cairo_destroy (cr);
1021         cairo_surface_destroy (surface);
1022
1023         return pattern;
1024 }
1025
1026 gint
1027 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
1028 {
1029         Glib::RefPtr<Gdk::Window> win (mta->get_window());
1030         cairo_t* cr;
1031
1032         cr = gdk_cairo_create (win->gobj());
1033
1034         /* clip to expose area */
1035
1036         gdk_cairo_rectangle (cr, &ev->area);
1037         cairo_clip (cr);
1038
1039         cairo_pattern_t* pattern;
1040         const MeterMatricsMapKey key (mta->get_name(), type, types_to_bit(types));
1041         MetricPatternMap::iterator i = ticks_patterns.find (key);
1042
1043         if (i == ticks_patterns.end()) {
1044                 pattern = meter_render_ticks (*mta, type, types);
1045                 ticks_patterns[key] = pattern;
1046         } else {
1047                 pattern = i->second;
1048         }
1049
1050         cairo_move_to (cr, 0, 0);
1051         cairo_set_source (cr, pattern);
1052
1053         gint width, height;
1054         win->get_size (width, height);
1055
1056         cairo_rectangle (cr, 0, 0, width, height);
1057         cairo_fill (cr);
1058
1059         cairo_destroy (cr);
1060
1061         return true;
1062 }
1063
1064 gint
1065 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
1066 {
1067         Glib::RefPtr<Gdk::Window> win (mma->get_window());
1068         cairo_t* cr;
1069
1070         cr = gdk_cairo_create (win->gobj());
1071
1072         /* clip to expose area */
1073
1074         gdk_cairo_rectangle (cr, &ev->area);
1075         cairo_clip (cr);
1076
1077         cairo_pattern_t* pattern;
1078         const MeterMatricsMapKey key (mma->get_name(), type, types_to_bit(types));
1079         MetricPatternMap::iterator i = metric_patterns.find (key);
1080
1081         if (i == metric_patterns.end()) {
1082                 pattern = meter_render_metrics (*mma, type, types);
1083                 metric_patterns[key] = pattern;
1084         } else {
1085                 pattern = i->second;
1086         }
1087
1088         cairo_move_to (cr, 0, 0);
1089         cairo_set_source (cr, pattern);
1090
1091         gint width, height;
1092         win->get_size (width, height);
1093
1094         cairo_rectangle (cr, 0, 0, width, height);
1095         cairo_fill (cr);
1096
1097         cairo_destroy (cr);
1098
1099         return true;
1100 }
1101
1102 void
1103 ArdourMeter::meter_clear_pattern_cache(int which) {
1104         MetricPatternMap::iterator i = metric_patterns.begin();
1105         MetricPatternMap::iterator j = ticks_patterns.begin();
1106
1107         while (i != metric_patterns.end()) {
1108                 int m = 4;
1109                 MeterMatricsMapKey const * const key = &(i->first);
1110                 std::string n = key->_n;
1111                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1112                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1113                 if (which & m) {
1114                         cairo_pattern_destroy(i->second);
1115                         metric_patterns.erase(i++);
1116                 } else {
1117                         ++i;
1118                 }
1119         }
1120
1121         while (j != ticks_patterns.end()) {
1122                 int m = 4;
1123                 MeterMatricsMapKey const * const key = &(j->first);
1124                 std::string n = key->_n;
1125                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1126                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1127                 if (which & m) {
1128                         cairo_pattern_destroy(j->second);
1129                         ticks_patterns.erase(j++);
1130                 } else {
1131                         ++j;
1132                 }
1133         }
1134         RedrawMetrics();
1135 }