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 MeterKrms:
  85                         return _("RMS + Peak");
  86                         break;
  87                 case MeterIEC1DIN:
  88                         return _("IEC1/DIN");
  89                         break;
  90                 case MeterIEC1NOR:
  91                         return _("IEC1/Nordic");
  92                         break;
  93                 case MeterIEC2BBC:
  94                         return _("IEC2/BBC");
  95                         break;
  96                 case MeterIEC2EBU:
  97                         return _("IEC2/EBU");
  98                         break;
  99                 case MeterK20:
 100                         return _("K20");
 101                         break;
 102                 case MeterK14:
 103                         return _("K14");
 104                         break;
 105                 case MeterK12:
 106                         return _("K12");
 107                         break;
 108                 case MeterVU:
 109                         return _("VU");
 110                         break;
 111                 default:
 112                         return _("???");
 113                         break;
 114         }
 115 }
 116
 117 static inline int types_to_bit (vector<ARDOUR::DataType> types) {
 118         int rv = 0;
 119         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 120                 rv |= 1 << (*i);
 121         }
 122         return rv;
 123 }
 124
 125 static inline float mtr_col_and_fract(
 126                 cairo_t* cr, Gdk::Color const * const c, const uint32_t peakcolor, const MeterType mt, const float val)
 127 {
 128         float fraction = 0;
 129
 130         switch (mt) {
 131                 default:
 132                 case MeterKrms:
 133                 case MeterPeak:
 134                         fraction = log_meter (val);
 135                         if (val >= 0 || val == -9) {
 136                                 cairo_set_source_rgb (cr,
 137                                                 UINT_RGBA_R_FLT(peakcolor),
 138                                                 UINT_RGBA_G_FLT(peakcolor),
 139                                                 UINT_RGBA_B_FLT(peakcolor));
 140                         } else {
 141                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 142                         }
 143                         break;
 144                 case MeterIEC2BBC:
 145                 case MeterIEC2EBU:
 146                         fraction = meter_deflect_ppm(val);
 147                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 148                         break;
 149                 case MeterIEC1NOR:
 150                         fraction = meter_deflect_nordic(val);
 151 #if 0
 152                         if (val == -18.0) {
 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 #else
 161                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 162 #endif
 163                         break;
 164                 case MeterIEC1DIN:
 165                         fraction = meter_deflect_din(val);
 166                         if (val == -9.0 || val == -15 || val == -18) {
 167                                 cairo_set_source_rgb (cr,
 168                                                 UINT_RGBA_R_FLT(peakcolor),
 169                                                 UINT_RGBA_G_FLT(peakcolor),
 170                                                 UINT_RGBA_B_FLT(peakcolor));
 171                         } else {
 172                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 173                         }
 174                         break;
 175                 case MeterVU:
 176                         fraction = meter_deflect_vu(val);
 177                         if (val >= -20.0) {
 178                                 cairo_set_source_rgb (cr,
 179                                                 UINT_RGBA_R_FLT(peakcolor),
 180                                                 UINT_RGBA_G_FLT(peakcolor),
 181                                                 UINT_RGBA_B_FLT(peakcolor));
 182                         } else {
 183                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 184                         }
 185                         break;
 186                 case MeterK20:
 187                         fraction = meter_deflect_k (val, 20);
 188                         if (val >= -16.0) {
 189                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 190                         } else if (val >= -20.0) {
 191                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 192                         } else {
 193                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 194                         }
 195                         break;
 196                 case MeterK14:
 197                         if (val >= -10.0) {
 198                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 199                         } else if (val >= -14.0) {
 200                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 201                         } else {
 202                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 203                         }
 204                         fraction = meter_deflect_k (val, 14);
 205                         break;
 206                 case MeterK12:
 207                         if (val >= -8.0) {
 208                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 209                         } else if (val >= -12.0) {
 210                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 211                         } else {
 212                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 213                         }
 214                         fraction = meter_deflect_k (val, 12);
 215                         break;
 216         }
 217         return fraction;
 218 }
 219
 220 static void mtr_red_stripe(cairo_t* cr, float l, float w, int h, float top, float bot) {
 221         if (w <= 0) return;
 222         int t = h - floorf (h * (top));
 223         int b = h - floorf (h * (bot));
 224         cairo_set_source_rgba (cr, .75, 0, 0, 0.75);
 225         cairo_rectangle (cr, l, t + .5, w, b - t);
 226         cairo_fill (cr);
 227 }
 228
 229 static void set_bg_color(Gtk::Widget& w, cairo_t* cr, MeterType type) {
 230         float r,g,b;
 231         switch(type) {
 232                 case MeterVU:
 233                         if (rgba_p_from_style("meterstripVU", &r, &g, &b, "bg")) {
 234                                 cairo_set_source_rgb (cr, r, g, b);
 235                         } else {
 236                                 cairo_set_source_rgb (cr, 1.0, 1.0, 0.85);
 237                         }
 238                         break;
 239                 case MeterIEC1DIN:
 240                 case MeterIEC1NOR:
 241                 case MeterIEC2BBC:
 242                 case MeterIEC2EBU:
 243                 case MeterK12:
 244                 case MeterK14:
 245                 case MeterK20:
 246                         if (rgba_p_from_style("meterstripPPM", &r, &g, &b, "bg")) {
 247                                 cairo_set_source_rgb (cr, r, g, b);
 248                         } else {
 249                                 cairo_set_source_rgb (cr, 0.1, 0.1, 0.1);
 250                         }
 251                         break;
 252                 default:
 253                         {
 254                         Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 255                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 256                         }
 257                         break;
 258         }
 259 }
 260
 261 static void set_fg_color(Gtk::Widget&, MeterType type, Gdk::Color * c) {
 262         float r,g,b;
 263         switch(type) {
 264                 case MeterVU:
 265                         if (rgba_p_from_style("meterstripVU", &r, &g, &b)) {
 266                                 c->set_rgb_p(r, g, b);
 267                         } else {
 268                                 c->set_rgb_p(0.0, 0.0, 0.0);
 269                         }
 270                         break;
 271                 default:
 272                         if (rgba_p_from_style("meterstripPPM", &r, &g, &b)) {
 273                                 c->set_rgb_p(r, g, b);
 274                         } else {
 275                                 c->set_rgb_p(1.0, 1.0, 1.0);
 276                         }
 277                         break;
 278         }
 279 }
 280
 281 static cairo_pattern_t*
 282 meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
 283 {
 284         Glib::RefPtr<Gdk::Window> win (w.get_window());
 285
 286         bool background;
 287         bool tickleft, tickright;
 288         gint width, height;
 289         win->get_size (width, height);
 290         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 291         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 292         background = types.size() == 0 || tickleft || tickright;
 293
 294         float box_l=0;
 295         float box_w=0;
 296         if (tickleft) {
 297                 if (w.get_name().substr(0, 3) == "Bar") {
 298                         box_l = width-2; box_w = 2;
 299                 } else if (w.get_name().substr(0, 4) == "Mark") {
 300                         box_l = width-2; box_w = 2;
 301                         background = false;
 302                 }
 303         } else if (tickright) {
 304                 if (w.get_name().substr(0, 3) == "Bar") {
 305                         box_l = 0; box_w = 2;
 306                 } else if (w.get_name().substr(0, 4) == "Mark") {
 307                         box_l = 0; box_w = 2;
 308                         background = false;
 309                 }
 310         } else {
 311                 box_l = 0; box_w = 3;
 312         }
 313
 314         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 315         cairo_t* cr = cairo_create (surface);
 316
 317         cairo_move_to (cr, 0, 0);
 318         cairo_rectangle (cr, 0, 0, width, height);
 319
 320         if (background) {
 321                 /* meterbridge */
 322                 set_bg_color(w, cr, type);
 323         } else {
 324                 /* mixer */
 325                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 326                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 327         }
 328         cairo_fill (cr);
 329
 330         height = min(max_pattern_metric_size, height);
 331         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 332
 333         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 334
 335                 Gdk::Color c;
 336                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 337                         /* we're overlaying more than 1 set of marks, so use different colours */
 338                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 339                 } else if (background) {
 340                         set_fg_color(w, type, &c);
 341                 } else {
 342                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 343                 }
 344
 345                 // tick-maker position in dBFS, line-thickness
 346                 std::map<float,float> points;
 347
 348                 switch (*i) {
 349                 case DataType::AUDIO:
 350
 351                         switch (type) {
 352                                 case MeterK12:
 353                                         points.insert (std::pair<float,float>(-52.0f, 1.0));
 354                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 355                                         points.insert (std::pair<float,float>(-32.0f, 1.0));
 356                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 357                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 358                                         points.insert (std::pair<float,float>(-15.0f, 1.0));
 359                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 360                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 361                                         points.insert (std::pair<float,float>( -8.0f, 0.8));
 362                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 363                                         points.insert (std::pair<float,float>( -3.0f, 1.0));
 364                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 365                                         break;
 366                                 case MeterK14:
 367                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 368                                         points.insert (std::pair<float,float>(-44.0f, 1.0));
 369                                         points.insert (std::pair<float,float>(-34.0f, 1.0));
 370                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 371                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 372                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 373                                         points.insert (std::pair<float,float>(-14.0f, 1.0)); //   0
 374                                         points.insert (std::pair<float,float>(-11.0f, 1.0)); //  +3
 375                                         points.insert (std::pair<float,float>(-10.0f, 0.8)); //  +4
 376                                         points.insert (std::pair<float,float>( -8.0f, 1.0)); //  +6
 377                                         points.insert (std::pair<float,float>( -4.0f, 1.0)); // +10
 378                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 379                                         break;
 380                                 case MeterK20:
 381                                         points.insert (std::pair<float,float>(-60.0f, 1.0));
 382                                         points.insert (std::pair<float,float>(-50.0f, 1.0));
 383                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 384                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 385                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 386                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 387                                         points.insert (std::pair<float,float>(-20.0f, 1.0)); //  0
 388                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 389                                         points.insert (std::pair<float,float>(-16.0f, 0.8));
 390                                         points.insert (std::pair<float,float>(-14.0f, 1.0)); // +6
 391                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 392                                         points.insert (std::pair<float,float>( -5.0f, 1.0));
 393                                         points.insert (std::pair<float,float>(  0.0f, 1.0)); //+20
 394                                         break;
 395                                 case MeterIEC2EBU:
 396                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 397                                         points.insert (std::pair<float,float>(-28.0f, 0.5));
 398                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 399                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 400                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 401                                         points.insert (std::pair<float,float>(-20.0f, 0.5));
 402                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 403                                         points.insert (std::pair<float,float>(-16.0f, 0.5));
 404                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 405                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 406                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 407                                         points.insert (std::pair<float,float>( -9.0f, 0.8));
 408                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 409                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 410                                         break;
 411                                 case MeterIEC2BBC:
 412                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 413                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 414                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 415                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 416                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 417                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 418                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 419                                         break;
 420                                 case MeterIEC1NOR:
 421                                         points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
 422                                         points.insert (std::pair<float,float>(-57.0f, 0.5));
 423                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 424                                         points.insert (std::pair<float,float>(-51.0f, 0.5));
 425                                         points.insert (std::pair<float,float>(-48.0f, 1.0));
 426                                         points.insert (std::pair<float,float>(-45.0f, 0.5));
 427                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 428                                         points.insert (std::pair<float,float>(-39.0f, 0.5));
 429                                         points.insert (std::pair<float,float>(-36.0f, 1.0));
 430
 431                                         points.insert (std::pair<float,float>(-33.0f, 0.5));
 432                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 433                                         points.insert (std::pair<float,float>(-27.0f, 0.5));
 434                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 435                                         points.insert (std::pair<float,float>(-21.0f, 0.5));
 436
 437                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 438                                         points.insert (std::pair<float,float>(-15.0f, 0.5));
 439                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 440                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 441                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 442                                         mtr_red_stripe(cr, box_l, box_w, height,
 443                                                         meter_deflect_nordic(-6.0f), meter_deflect_nordic(-12.0f));
 444                                         break;
 445                                 case MeterIEC1DIN:
 446                                         points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
 447                                         points.insert (std::pair<float,float>( -4.0f, 1.0));
 448                                         points.insert (std::pair<float,float>( -5.0f, 0.5));
 449                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 450                                         points.insert (std::pair<float,float>( -7.0f, 0.5));
 451                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 452                                         points.insert (std::pair<float,float>( -9.0f, 1.0)); // "100%"
 453                                         points.insert (std::pair<float,float>(-10.0f, 0.5));
 454                                         points.insert (std::pair<float,float>(-11.0f, 0.5));
 455                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 456                                         points.insert (std::pair<float,float>(-13.0f, 0.5));
 457                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 458                                         points.insert (std::pair<float,float>(-15.0f, 0.8)); // "50%"
 459                                         points.insert (std::pair<float,float>(-18.0f, 0.8)); // "-9"
 460                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 461                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 462                                         points.insert (std::pair<float,float>(-29.0f, 1.0)); // "-20", "10%"
 463                                         points.insert (std::pair<float,float>(-34.0f, 0.5)); // -25
 464                                         //points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
 465                                         points.insert (std::pair<float,float>(-39.0f, 1.0));
 466                                         points.insert (std::pair<float,float>(-49.0f, 1.0));
 467                                         points.insert (std::pair<float,float>(-54.0f, 0.5));
 468                                         points.insert (std::pair<float,float>(-59.0f, 1.0));
 469                                         mtr_red_stripe(cr, box_l, box_w, height,
 470                                                         meter_deflect_din(0.0f), meter_deflect_din(-9.0f));
 471                                         break;
 472                                 case MeterVU:
 473                                         points.insert (std::pair<float,float>(-17.0f, 1.0)); //+3 VU
 474                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 475                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 476                                         points.insert (std::pair<float,float>(-19.5f, 0.5));
 477                                         points.insert (std::pair<float,float>(-20.0f, 1.0)); // 0 VU
 478                                         points.insert (std::pair<float,float>(-20.5f, 0.5));
 479                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 480                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 481                                         points.insert (std::pair<float,float>(-23.0f, 1.0)); //-3 VU
 482                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 483                                         points.insert (std::pair<float,float>(-25.0f, 1.0));
 484                                         points.insert (std::pair<float,float>(-26.0f, 0.5));
 485                                         points.insert (std::pair<float,float>(-27.0f, 1.0)); //-7 VU
 486                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 487                                         points.insert (std::pair<float,float>(-35.0f, 0.5));
 488                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 489                                         mtr_red_stripe(cr, box_l, box_w, height,
 490                                                         meter_deflect_vu(-17.0f), meter_deflect_vu(-20.0f));
 491                                         break;
 492
 493                                 default:
 494                                         points.insert (std::pair<float,float>(-60, 0.5));
 495                                         points.insert (std::pair<float,float>(-50, 1.0));
 496                                         points.insert (std::pair<float,float>(-40, 1.0));
 497                                         points.insert (std::pair<float,float>(-30, 1.0));
 498                                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 499                                                 points.insert (std::pair<float,float>(-24, 1.0));
 500                                         } else {
 501                                                 points.insert (std::pair<float,float>(-25, 1.0));
 502                                         }
 503                                         points.insert (std::pair<float,float>(-20, 1.0));
 504
 505                                         points.insert (std::pair<float,float>(-19, 0.5));
 506                                         points.insert (std::pair<float,float>(-18, 1.0));
 507                                         points.insert (std::pair<float,float>(-17, 0.5));
 508                                         points.insert (std::pair<float,float>(-16, 0.5));
 509                                         points.insert (std::pair<float,float>(-15, 1.0));
 510
 511                                         points.insert (std::pair<float,float>(-14, 0.5));
 512                                         points.insert (std::pair<float,float>(-13, 0.5));
 513                                         points.insert (std::pair<float,float>(-12, 0.5));
 514                                         points.insert (std::pair<float,float>(-11, 0.5));
 515                                         points.insert (std::pair<float,float>(-10, 1.0));
 516
 517                                         points.insert (std::pair<float,float>( -9, 1.0));
 518                                         points.insert (std::pair<float,float>( -8, 0.5));
 519                                         points.insert (std::pair<float,float>( -7, 0.5));
 520                                         points.insert (std::pair<float,float>( -6, 0.5));
 521                                         points.insert (std::pair<float,float>( -5, 1.0));
 522                                         points.insert (std::pair<float,float>( -4, 0.5));
 523                                         points.insert (std::pair<float,float>( -3, 1.0));
 524                                         points.insert (std::pair<float,float>( -2, 0.5));
 525                                         points.insert (std::pair<float,float>( -1, 0.5));
 526
 527                                         points.insert (std::pair<float,float>(  0, 1.0));
 528                                         points.insert (std::pair<float,float>(  1, 0.5));
 529                                         points.insert (std::pair<float,float>(  2, 0.5));
 530                                         points.insert (std::pair<float,float>(  3, 1.0));
 531                                         points.insert (std::pair<float,float>(  4, 0.5));
 532                                         points.insert (std::pair<float,float>(  5, 0.5));
 533                                         break;
 534                         }
 535                         break;
 536
 537                 case DataType::MIDI:
 538                         points.insert (std::pair<float,float>(  0, 1.0));
 539                         points.insert (std::pair<float,float>( 16, 0.5));
 540                         points.insert (std::pair<float,float>( 32, 0.5));
 541                         points.insert (std::pair<float,float>( 48, 0.5));
 542                         points.insert (std::pair<float,float>( 64, 1.0));
 543                         points.insert (std::pair<float,float>( 80, 0.5));
 544                         points.insert (std::pair<float,float>( 96, 0.5));
 545                         points.insert (std::pair<float,float>(100, 1.0));
 546                         points.insert (std::pair<float,float>(112, 0.5));
 547                         points.insert (std::pair<float,float>(127, 1.0));
 548                         break;
 549                 }
 550
 551                 for (std::map<float,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 552                         cairo_set_line_width (cr, (j->second));
 553
 554                         float fraction = 0;
 555                         gint pos;
 556
 557                         switch (*i) {
 558                         case DataType::AUDIO:
 559                                 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 560
 561                                 pos = height - (gint) floor (height * fraction);
 562                                 pos = max (pos, 1);
 563                                 cairo_move_to(cr, 0, pos + .5);
 564                                 cairo_line_to(cr, 3, pos + .5);
 565                                 cairo_stroke (cr);
 566                                 break;
 567                         case DataType::MIDI:
 568                                 fraction = (j->first) / 127.0;
 569                                 pos = 1 + height - (gint) floor (height * fraction);
 570                                 pos = min (pos, height);
 571                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 572                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 573                                 cairo_fill(cr);
 574                                 break;
 575                         }
 576                 }
 577         }
 578
 579         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 580
 581         cairo_destroy (cr);
 582         cairo_surface_destroy (surface);
 583
 584         return pattern;
 585 }
 586
 587 static cairo_pattern_t*
 588 meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
 589 {
 590         Glib::RefPtr<Gdk::Window> win (w.get_window());
 591
 592         bool tickleft, tickright;
 593         bool background;
 594         int overlay_midi = 1;
 595         gint width, height;
 596         win->get_size (width, height);
 597
 598         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 599         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 600         background = types.size() == 0 || tickleft || tickright;
 601
 602         if (!tickleft && !tickright) {
 603                 tickright = true;
 604         }
 605
 606         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 607         cairo_t* cr = cairo_create (surface);
 608         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 609
 610         Pango::AttrList audio_font_attributes;
 611         Pango::AttrList midi_font_attributes;
 612         Pango::AttrList unit_font_attributes;
 613
 614         Pango::AttrFontDesc* font_attr;
 615         Pango::FontDescription font;
 616
 617         font = Pango::FontDescription (ARDOUR_UI::config()->get_canvasvar_SmallMonospaceFont());
 618         double fixfontsize = 81920.0 / (double) ARDOUR::Config->get_font_scale();
 619
 620         font.set_weight (Pango::WEIGHT_NORMAL);
 621         font.set_size (9.0 * PANGO_SCALE * fixfontsize);
 622         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 623         audio_font_attributes.change (*font_attr);
 624         delete font_attr;
 625
 626         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 627         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 628         font.set_size (8.0 * PANGO_SCALE * fixfontsize);
 629         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 630         midi_font_attributes.change (*font_attr);
 631         delete font_attr;
 632
 633         font.set_size (6.0 * PANGO_SCALE * fixfontsize);
 634         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 635         unit_font_attributes.change (*font_attr);
 636         delete font_attr;
 637
 638         cairo_move_to (cr, 0, 0);
 639         cairo_rectangle (cr, 0, 0, width, height);
 640         if (background) {
 641                 /* meterbridge */
 642                 set_bg_color(w, cr, type);
 643         } else {
 644                 /* mixer */
 645                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 646                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 647         }
 648         cairo_fill (cr);
 649
 650         cairo_set_line_width (cr, 1.0);
 651
 652         height = min(max_pattern_metric_size, height);
 653         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 654         Gdk::Color c; // default text color
 655
 656         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 657
 658                 if (types.size() > 1 && (*i) == DataType::MIDI && overlay_midi == 0) {
 659                         continue;
 660                 }
 661
 662                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 663                         /* we're overlaying more than 1 set of marks, so use different colours */
 664                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 665                 } else if (background) {
 666                         set_fg_color(w, type, &c);
 667                 } else {
 668                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 669                 }
 670
 671                 std::map<float,string> points; // map: label-pos in dBFS, label-text
 672
 673                 switch (*i) {
 674                 case DataType::AUDIO:
 675                         layout->set_attributes (audio_font_attributes);
 676                         switch (type) {
 677                                 case MeterK12:
 678                                         overlay_midi = 0;
 679                                         points.insert (std::pair<float,string>(-52.0f, "-40"));
 680                                         points.insert (std::pair<float,string>(-42.0f, "-30"));
 681                                         points.insert (std::pair<float,string>(-32.0f, "-20"));
 682                                         points.insert (std::pair<float,string>(-22.0f, "-10"));
 683                                         points.insert (std::pair<float,string>(-18.0f,  "-6"));
 684                                         points.insert (std::pair<float,string>(-15.0f,  "-3"));
 685                                         points.insert (std::pair<float,string>(-12.0f,  " 0"));
 686                                         points.insert (std::pair<float,string>( -9.0f,  "+3"));
 687                                         points.insert (std::pair<float,string>( -6.0f,  "+6"));
 688                                         points.insert (std::pair<float,string>( -3.0f,  "+9"));
 689                                         points.insert (std::pair<float,string>(  0.0f, "+12"));
 690                                         break;
 691                                 case MeterK14:
 692                                         overlay_midi = 0;
 693                                         points.insert (std::pair<float,string>(-54.0f, "-40"));
 694                                         points.insert (std::pair<float,string>(-44.0f, "-30"));
 695                                         points.insert (std::pair<float,string>(-34.0f, "-20"));
 696                                         points.insert (std::pair<float,string>(-24.0f, "-10"));
 697                                         points.insert (std::pair<float,string>(-20.0f,  "-6"));
 698                                         points.insert (std::pair<float,string>(-17.0f,  "-3"));
 699                                         points.insert (std::pair<float,string>(-14.0f,  " 0"));
 700                                         points.insert (std::pair<float,string>(-11.0f,  "+3"));
 701                                         points.insert (std::pair<float,string>( -8.0f,  "+6"));
 702                                         points.insert (std::pair<float,string>( -4.0f, "+10"));
 703                                         points.insert (std::pair<float,string>(  0.0f, "+14"));
 704                                         break;
 705                                 case MeterK20:
 706                                         overlay_midi = 0;
 707                                         points.insert (std::pair<float,string>(-60.0f, "-40"));
 708                                         points.insert (std::pair<float,string>(-50.0f, "-30"));
 709                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 710                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 711                                         points.insert (std::pair<float,string>(-26.0f,  "-6"));
 712                                         points.insert (std::pair<float,string>(-23.0f,  "-3"));
 713                                         points.insert (std::pair<float,string>(-20.0f,  " 0"));
 714                                         points.insert (std::pair<float,string>(-17.0f,  "+3"));
 715                                         points.insert (std::pair<float,string>(-14.0f,  "+6"));
 716                                         points.insert (std::pair<float,string>(-10.0f, "+10"));
 717                                         points.insert (std::pair<float,string>( -5.0f, "+15"));
 718                                         points.insert (std::pair<float,string>(  0.0f, "+20"));
 719                                         break;
 720                                 default:
 721                                 case MeterPeak:
 722                                 case MeterKrms:
 723                                         points.insert (std::pair<float,string>(-50.0f, "-50"));
 724                                         points.insert (std::pair<float,string>(-40.0f, "-40"));
 725                                         points.insert (std::pair<float,string>(-30.0f, "-30"));
 726                                         points.insert (std::pair<float,string>(-20.0f, "-20"));
 727                                         if (types.size() == 1) {
 728                                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 729                                                         points.insert (std::pair<float,string>(-24.0f, "-24"));
 730                                                 } else {
 731                                                         points.insert (std::pair<float,string>(-25.0f, "-25"));
 732                                                 }
 733                                                 points.insert (std::pair<float,string>(-15.0f, "-15"));
 734                                         }
 735                                         points.insert (std::pair<float,string>(-18.0f, "-18"));
 736                                         points.insert (std::pair<float,string>(-10.0f, "-10"));
 737                                         points.insert (std::pair<float,string>( -5.0f, "-5"));
 738                                         points.insert (std::pair<float,string>( -3.0f, "-3"));
 739                                         points.insert (std::pair<float,string>(  0.0f, "+0"));
 740                                         points.insert (std::pair<float,string>(  3.0f, "+3"));
 741                                         break;
 742
 743                                 case MeterIEC2EBU:
 744                                         overlay_midi = 3;
 745                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 746                                         points.insert (std::pair<float,string>(-26.0f, "-8"));
 747                                         points.insert (std::pair<float,string>(-22.0f, "-4"));
 748                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 749                                         points.insert (std::pair<float,string>(-14.0f, "+4"));
 750                                         points.insert (std::pair<float,string>(-10.0f, "+8"));
 751                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 752                                         break;
 753
 754                                 case MeterIEC2BBC:
 755                                         overlay_midi = 3;
 756                                         points.insert (std::pair<float,string>(-30.0f, " 1 "));
 757                                         points.insert (std::pair<float,string>(-26.0f, " 2 "));
 758                                         points.insert (std::pair<float,string>(-22.0f, " 3 "));
 759                                         points.insert (std::pair<float,string>(-18.0f, " 4 "));
 760                                         points.insert (std::pair<float,string>(-14.0f, " 5 "));
 761                                         points.insert (std::pair<float,string>(-10.0f, " 6 "));
 762                                         points.insert (std::pair<float,string>( -6.0f, " 7 "));
 763                                         break;
 764
 765                                 case MeterIEC1NOR:
 766                                         overlay_midi = 0;
 767                                         //points.insert (std::pair<float,string>(-60.0f, "-42"));
 768                                         points.insert (std::pair<float,string>(-54.0f, "-36"));
 769                                         points.insert (std::pair<float,string>(-48.0f, "-30"));
 770                                         points.insert (std::pair<float,string>(-42.0f, "-24"));
 771                                         points.insert (std::pair<float,string>(-36.0f, "-18"));
 772
 773                                         //points.insert (std::pair<float,string>(-33.0f, "-15"));
 774                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 775                                         //points.insert (std::pair<float,string>(-27.0f, "-9"));
 776                                         points.insert (std::pair<float,string>(-24.0f, "-6"));
 777                                         //points.insert (std::pair<float,string>(-21.0f, "-3"));
 778
 779                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 780                                         //points.insert (std::pair<float,string>(-15.0f, "+3"));
 781                                         points.insert (std::pair<float,string>(-12.0f, "+6"));
 782                                         points.insert (std::pair<float,string>( -9.0f, "+9"));
 783                                         //points.insert (std::pair<float,string>( -6.0f, "+12"));
 784                                         break;
 785
 786                                 case MeterIEC1DIN:
 787                                         overlay_midi = 2;
 788                                         //points.insert (std::pair<float,string>( -3.0f, "200%"));
 789                                         points.insert (std::pair<float,string>( -4.0f, "+5"));
 790                                         points.insert (std::pair<float,string>( -9.0f, "0")); // "100%";
 791                                         points.insert (std::pair<float,string>(-14.0f, "-5"));
 792                                         //points.insert (std::pair<float,string>(-15.0f, "50%"));
 793                                         //points.insert (std::pair<float,string>(-18.0f, "-9"));
 794                                         points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
 795                                         points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
 796                                         //points.insert (std::pair<float,string>(-35.0f, "5%")); // "5%"
 797                                         points.insert (std::pair<float,string>(-39.0f, "-30"));
 798                                         //points.insert (std::pair<float,string>(-49.0f, "1%"));
 799                                         points.insert (std::pair<float,string>(-59.0f, "-50"));
 800                                         break;
 801
 802                                 case MeterVU:
 803                                         overlay_midi = 0;
 804                                         points.insert (std::pair<float,string>(-17.0f, "+3"));
 805                                         points.insert (std::pair<float,string>(-18.0f, "+2"));
 806                                         points.insert (std::pair<float,string>(-19.0f, "+1"));
 807                                         points.insert (std::pair<float,string>(-20.0f, " 0"));
 808                                         points.insert (std::pair<float,string>(-21.0f, "-1"));
 809                                         points.insert (std::pair<float,string>(-22.0f, "-2"));
 810                                         points.insert (std::pair<float,string>(-23.0f, "-3"));
 811                                         points.insert (std::pair<float,string>(-25.0f, "-5"));
 812                                         points.insert (std::pair<float,string>(-27.0f, "-7"));
 813                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 814                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 815                                         break;
 816                         }
 817                         break;
 818                 case DataType::MIDI:
 819                         layout->set_attributes (midi_font_attributes);
 820                         if (types.size() == 1) {
 821                                 points.insert (std::pair<float,string>(  0, "0"));
 822                                 points.insert (std::pair<float,string>( 16,  "16"));
 823                                 points.insert (std::pair<float,string>( 32,  "32"));
 824                                 points.insert (std::pair<float,string>( 48,  "48"));
 825                                 points.insert (std::pair<float,string>( 64,  "64"));
 826                                 points.insert (std::pair<float,string>( 80,  "80"));
 827                                 points.insert (std::pair<float,string>( 96,  "96"));
 828                                 points.insert (std::pair<float,string>(100, "100"));
 829                                 points.insert (std::pair<float,string>(112, "112"));
 830                         } else {
 831                                 switch (overlay_midi) {
 832                                         case 1:
 833                                                 /* labels that don't overlay with dBFS */
 834                                                 points.insert (std::pair<float,string>(  0, "0"));
 835                                                 points.insert (std::pair<float,string>( 24, "24"));
 836                                                 points.insert (std::pair<float,string>( 48, "48"));
 837                                                 points.insert (std::pair<float,string>( 72, "72"));
 838                                                 points.insert (std::pair<float,string>(127, "127"));
 839                                                 break;
 840                                         case 2:
 841                                                 /* labels that don't overlay with DIN */
 842                                                 points.insert (std::pair<float,string>(  0, "0"));
 843                                                 points.insert (std::pair<float,string>( 16,  "16"));
 844                                                 points.insert (std::pair<float,string>( 40,  "40"));
 845                                                 points.insert (std::pair<float,string>( 64,  "64"));
 846                                                 points.insert (std::pair<float,string>(112, "112"));
 847                                                 points.insert (std::pair<float,string>(127, "127"));
 848                                                 break;
 849                                         case 3:
 850                                                 /* labels that don't overlay with BBC nor EBU*/
 851                                                 points.insert (std::pair<float,string>(  0, "0"));
 852                                                 points.insert (std::pair<float,string>( 16, "16"));
 853                                                 points.insert (std::pair<float,string>( 56, "56"));
 854                                                 points.insert (std::pair<float,string>( 72, "72"));
 855                                                 points.insert (std::pair<float,string>(112, "112"));
 856                                                 points.insert (std::pair<float,string>(127, "127"));
 857                                         default:
 858                                                 break;
 859                                 }
 860                         }
 861                         break;
 862                 }
 863
 864                 gint pos = -1;
 865
 866                 for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
 867                         float fraction = 0;
 868                         bool align_center = background; // this is true for meterbridge meters w/ fixed background
 869                         switch (*i) {
 870                                 case DataType::AUDIO:
 871                                         fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 872
 873                                         pos = height - (gint) floor (height * fraction);
 874                                         pos = max (pos, 1);
 875                                         if (tickleft) {
 876                                                 cairo_move_to(cr, width-1.5, pos + .5);
 877                                                 cairo_line_to(cr, width, pos + .5);
 878                                                 cairo_stroke (cr);
 879                                         } else if (tickright) {
 880                                                 cairo_move_to(cr, 0, pos + .5);
 881                                                 cairo_line_to(cr, 1.5, pos + .5);
 882                                                 cairo_stroke (cr);
 883                                         }
 884                                         break;
 885
 886                                 case DataType::MIDI:
 887                                         align_center = false; // don't bleed into legend
 888                                         fraction = (j->first) / 127.0;
 889                                         pos = 1 + height - (gint) lrintf (height * fraction);
 890                                         pos = min (pos, height);
 891                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 892                                         if (tickleft) {
 893                                                 cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 894                                                 cairo_fill(cr);
 895                                         } else if (tickright) {
 896                                                 cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 897                                                 cairo_fill(cr);
 898                                         }
 899                                         break;
 900                         }
 901
 902                         if (pos < 0) continue;
 903
 904                         layout->set_text(j->second.c_str());
 905
 906                         int tw, th;
 907                         layout->get_pixel_size(tw, th);
 908
 909                         int p = pos - (th / 2) - 1;
 910                         p = min (p, height - th);
 911                         p = max (p, 0);
 912
 913                         if (align_center) {
 914                                 cairo_move_to (cr, (width-tw)/2.0, p);
 915                         } else {
 916                                 cairo_move_to (cr, width-3-tw, p);
 917                         }
 918
 919                         cairo_set_line_width(cr, 0.12);
 920                         cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
 921                         pango_cairo_layout_path(cr, layout->gobj());
 922                         cairo_stroke_preserve (cr);
 923                         cairo_set_line_width(cr, 1.0);
 924
 925                         if ((*i) == DataType::AUDIO) {
 926                                 mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 927                         } else {
 928                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 929                         }
 930
 931                         pango_cairo_show_layout (cr, layout->gobj());
 932                         cairo_new_path(cr);
 933                 }
 934         }
 935
 936         // add legend
 937         if (types.size() == 1 || overlay_midi == 0) {
 938                 int tw, th;
 939                 layout->set_attributes (unit_font_attributes);
 940                 switch (types.at(0)) {
 941                         case DataType::AUDIO:
 942                                 switch (type) {
 943                                         case MeterK20:
 944                                                 layout->set_text("K20");
 945                                                 break;
 946                                         case MeterK14:
 947                                                 layout->set_text("K14");
 948                                                 break;
 949                                         case MeterK12:
 950                                                 layout->set_text("K12");
 951                                                 break;
 952                                         default:
 953                                         case MeterPeak:
 954                                         case MeterKrms:
 955                                                 layout->set_text("dBFS");
 956                                                 break;
 957                                         case MeterIEC2EBU:
 958                                                 layout->set_text("EBU");
 959                                                 break;
 960                                         case MeterIEC2BBC:
 961                                                 layout->set_text("BBC");
 962                                                 break;
 963                                         case MeterIEC1DIN:
 964                                                 layout->set_text("DIN");
 965                                                 break;
 966                                         case MeterIEC1NOR:
 967                                                 layout->set_text("NOR");
 968                                                 break;
 969                                         case MeterVU:
 970                                                 layout->set_text("VU");
 971                                                 break;
 972                                 }
 973                                 layout->get_pixel_size(tw, th);
 974                                 break;
 975                         case DataType::MIDI:
 976                                 layout->set_text("mid");
 977                                 layout->get_pixel_size(tw, th);
 978                                 break;
 979                 }
 980                 if (!background) {
 981                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 982                 }
 983                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 984                 if (tickleft) {
 985                         cairo_move_to (cr, width - 2 - tw, height - th - 0.5);
 986                 } else {
 987                         cairo_move_to (cr, 2, height - th - 0.5);
 988                 }
 989                 pango_cairo_show_layout (cr, layout->gobj());
 990         }
 991
 992         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 993
 994         cairo_destroy (cr);
 995         cairo_surface_destroy (surface);
 996
 997         return pattern;
 998 }
 999
1000 gint
1001 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
1002 {
1003         Glib::RefPtr<Gdk::Window> win (mta->get_window());
1004         cairo_t* cr;
1005
1006         cr = gdk_cairo_create (win->gobj());
1007
1008         /* clip to expose area */
1009
1010         gdk_cairo_rectangle (cr, &ev->area);
1011         cairo_clip (cr);
1012
1013         cairo_pattern_t* pattern;
1014         const MeterMatricsMapKey key (mta->get_name(), type, types_to_bit(types));
1015         MetricPatternMap::iterator i = ticks_patterns.find (key);
1016
1017         if (i == ticks_patterns.end()) {
1018                 pattern = meter_render_ticks (*mta, type, types);
1019                 ticks_patterns[key] = pattern;
1020         } else {
1021                 pattern = i->second;
1022         }
1023
1024         cairo_move_to (cr, 0, 0);
1025         cairo_set_source (cr, pattern);
1026
1027         gint width, height;
1028         win->get_size (width, height);
1029
1030         cairo_rectangle (cr, 0, 0, width, height);
1031         cairo_fill (cr);
1032
1033         cairo_destroy (cr);
1034
1035         return true;
1036 }
1037
1038 gint
1039 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
1040 {
1041         Glib::RefPtr<Gdk::Window> win (mma->get_window());
1042         cairo_t* cr;
1043
1044         cr = gdk_cairo_create (win->gobj());
1045
1046         /* clip to expose area */
1047
1048         gdk_cairo_rectangle (cr, &ev->area);
1049         cairo_clip (cr);
1050
1051         cairo_pattern_t* pattern;
1052         const MeterMatricsMapKey key (mma->get_name(), type, types_to_bit(types));
1053         MetricPatternMap::iterator i = metric_patterns.find (key);
1054
1055         if (i == metric_patterns.end()) {
1056                 pattern = meter_render_metrics (*mma, type, types);
1057                 metric_patterns[key] = pattern;
1058         } else {
1059                 pattern = i->second;
1060         }
1061
1062         cairo_move_to (cr, 0, 0);
1063         cairo_set_source (cr, pattern);
1064
1065         gint width, height;
1066         win->get_size (width, height);
1067
1068         cairo_rectangle (cr, 0, 0, width, height);
1069         cairo_fill (cr);
1070
1071         cairo_destroy (cr);
1072
1073         return true;
1074 }
1075
1076 void
1077 ArdourMeter::meter_clear_pattern_cache(int which) {
1078         MetricPatternMap::iterator i = metric_patterns.begin();
1079         MetricPatternMap::iterator j = ticks_patterns.begin();
1080
1081         while (i != metric_patterns.end()) {
1082                 int m = 4;
1083                 MeterMatricsMapKey const * const key = &(i->first);
1084                 std::string n = key->_n;
1085                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1086                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1087                 if (which & m) {
1088                         cairo_pattern_destroy(i->second);
1089                         metric_patterns.erase(i++);
1090                 } else {
1091                         ++i;
1092                 }
1093         }
1094
1095         while (j != ticks_patterns.end()) {
1096                 int m = 4;
1097                 MeterMatricsMapKey const * const key = &(j->first);
1098                 std::string n = key->_n;
1099                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1100                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1101                 if (which & m) {
1102                         cairo_pattern_destroy(j->second);
1103                         ticks_patterns.erase(j++);
1104                 } else {
1105                         ++j;
1106                 }
1107         }
1108         RedrawMetrics();
1109 }