gtk2_ardour/meter_patterns.cc

   1 /*
   2     Copyright (C) 2013 Paul Davis
   3     Author: Robin Gareus
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <gtkmm2ext/cairo_widget.h>
  21 #include <gtkmm2ext/gtk_ui.h>
  22 #include <gtkmm2ext/utils.h>
  23 #include <gtkmm2ext/rgb_macros.h>
  24
  25 #include <ardour/rc_configuration.h>
  26 #include "ardour_ui.h"
  27 #include "utils.h"
  28 #include "logmeter.h"
  29 #include "meter_patterns.h"
  30
  31 #include "i18n.h"
  32
  33 using namespace ARDOUR;
  34 using namespace PBD;
  35 using namespace Gtk;
  36 using namespace Gtkmm2ext;
  37 using namespace std;
  38 using namespace ArdourMeter;
  39
  40 static const int max_pattern_metric_size = 1026;
  41
  42 sigc::signal<void> ArdourMeter::ResetAllPeakDisplays;
  43 sigc::signal<void,ARDOUR::Route*> ArdourMeter::ResetRoutePeakDisplays;
  44 sigc::signal<void,ARDOUR::RouteGroup*> ArdourMeter::ResetGroupPeakDisplays;
  45 sigc::signal<void> ArdourMeter::RedrawMetrics;
  46
  47 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> ArdourMeter::SetMeterTypeMulti;
  48
  49 namespace ArdourMeter {
  50         typedef std::map<std::string,cairo_pattern_t*> TickPatterns;
  51         typedef std::map<std::string,cairo_pattern_t*> MetricPatterns;
  52 }
  53
  54 static ArdourMeter::TickPatterns ticks_patterns;
  55 static ArdourMeter::MetricPatterns metric_patterns;
  56
  57 const std::string
  58 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
  59 {
  60         switch (mt) {
  61                 case MeterPeak:
  62                         return _("Peak");
  63                         break;
  64                 case MeterKrms:
  65                         return _("RMS + Peak");
  66                         break;
  67                 default:
  68                         return _("???");
  69                         break;
  70         }
  71 }
  72
  73 static cairo_pattern_t*
  74 meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
  75 {
  76         Glib::RefPtr<Gdk::Window> win (w.get_window());
  77
  78         bool background;
  79         gint width, height;
  80         win->get_size (width, height);
  81         background = types.size() == 0
  82                 || w.get_name().substr(w.get_name().length() - 4) == "Left"
  83                 || w.get_name().substr(w.get_name().length() - 5) == "Right";
  84
  85         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
  86         cairo_t* cr = cairo_create (surface);
  87
  88         cairo_move_to (cr, 0, 0);
  89         cairo_rectangle (cr, 0, 0, width, height);
  90         {
  91                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
  92                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  93         }
  94         cairo_fill (cr);
  95
  96         height = min(max_pattern_metric_size, height);
  97         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
  98
  99         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 100
 101                 Gdk::Color c;
 102                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 103
 104                 if (types.size() > 1) {
 105                         /* we're overlaying more than 1 set of marks, so use different colours */
 106                         switch (*i) {
 107                         case DataType::AUDIO:
 108                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 109                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 110                                 break;
 111                         case DataType::MIDI:
 112                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 113                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 114                                 break;
 115                         }
 116                 } else {
 117                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 118                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 119                 }
 120
 121                 std::map<int,float> points;
 122
 123                 switch (*i) {
 124                 case DataType::AUDIO:
 125                         points.insert (std::pair<int,float>(-60, 0.5));
 126                         points.insert (std::pair<int,float>(-50, 0.5));
 127                         points.insert (std::pair<int,float>(-40, 0.5));
 128                         points.insert (std::pair<int,float>(-30, 0.5));
 129                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 130                                 points.insert (std::pair<int,float>(-24, 0.5));
 131                         } else {
 132                                 points.insert (std::pair<int,float>(-25, 0.5));
 133                         }
 134                         points.insert (std::pair<int,float>(-20, 1.0));
 135
 136                         points.insert (std::pair<int,float>(-19, 0.5));
 137                         points.insert (std::pair<int,float>(-18, 1.0));
 138                         points.insert (std::pair<int,float>(-17, 0.5));
 139                         points.insert (std::pair<int,float>(-16, 0.5));
 140                         points.insert (std::pair<int,float>(-15, 1.0));
 141
 142                         points.insert (std::pair<int,float>(-14, 0.5));
 143                         points.insert (std::pair<int,float>(-13, 0.5));
 144                         points.insert (std::pair<int,float>(-12, 0.5));
 145                         points.insert (std::pair<int,float>(-11, 0.5));
 146                         points.insert (std::pair<int,float>(-10, 1.0));
 147
 148                         points.insert (std::pair<int,float>( -9, 0.5));
 149                         points.insert (std::pair<int,float>( -8, 0.5));
 150                         points.insert (std::pair<int,float>( -7, 0.5));
 151                         points.insert (std::pair<int,float>( -6, 0.5));
 152                         points.insert (std::pair<int,float>( -5, 1.0));
 153                         points.insert (std::pair<int,float>( -4, 0.5));
 154                         points.insert (std::pair<int,float>( -3, 0.5));
 155                         points.insert (std::pair<int,float>( -2, 0.5));
 156                         points.insert (std::pair<int,float>( -1, 0.5));
 157
 158                         points.insert (std::pair<int,float>(  0, 1.0));
 159                         points.insert (std::pair<int,float>(  1, 0.5));
 160                         points.insert (std::pair<int,float>(  2, 0.5));
 161                         points.insert (std::pair<int,float>(  3, 0.5));
 162                         points.insert (std::pair<int,float>(  4, 0.5));
 163                         points.insert (std::pair<int,float>(  5, 0.5));
 164                         break;
 165
 166                 case DataType::MIDI:
 167                         points.insert (std::pair<int,float>(  0, 1.0));
 168                         points.insert (std::pair<int,float>( 16, 0.5));
 169                         points.insert (std::pair<int,float>( 32, 0.5));
 170                         points.insert (std::pair<int,float>( 48, 0.5));
 171                         points.insert (std::pair<int,float>( 64, 1.0));
 172                         points.insert (std::pair<int,float>( 80, 0.5));
 173                         points.insert (std::pair<int,float>( 96, 0.5));
 174                         points.insert (std::pair<int,float>(100, 1.0));
 175                         points.insert (std::pair<int,float>(112, 0.5));
 176                         points.insert (std::pair<int,float>(127, 1.0));
 177                         break;
 178                 }
 179
 180                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 181                         cairo_set_line_width (cr, (j->second));
 182
 183                         float fraction = 0;
 184                         gint pos;
 185
 186                         switch (*i) {
 187                         case DataType::AUDIO:
 188                                 if (j->first >= 0 || j->first == -9) {
 189                                         cairo_set_source_rgb (cr,
 190                                                         UINT_RGBA_R_FLT(peakcolor),
 191                                                         UINT_RGBA_G_FLT(peakcolor),
 192                                                         UINT_RGBA_B_FLT(peakcolor));
 193                                 } else {
 194                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 195                                 }
 196                                 fraction = log_meter (j->first);
 197                                 pos = height - (gint) floor (height * fraction);
 198                                 cairo_move_to(cr, 0, pos + .5);
 199                                 cairo_line_to(cr, 3, pos + .5);
 200                                 cairo_stroke (cr);
 201                                 break;
 202                         case DataType::MIDI:
 203                                 fraction = (j->first) / 127.0;
 204                                 pos = 1 + height - (gint) floor (height * fraction);
 205                                 pos = min (pos, height);
 206                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 207                                 cairo_fill(cr);
 208                                 break;
 209                         }
 210                 }
 211         }
 212
 213         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 214
 215         cairo_destroy (cr);
 216         cairo_surface_destroy (surface);
 217
 218         return pattern;
 219 }
 220
 221
 222 static cairo_pattern_t*
 223 meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 224 {
 225         Glib::RefPtr<Gdk::Window> win (w.get_window());
 226
 227         bool tickleft, tickright;
 228         bool background;
 229         gint width, height;
 230         win->get_size (width, height);
 231
 232         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 233         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 234         background = types.size() == 0 || tickleft || tickright;
 235
 236         if (!tickleft && !tickright) {
 237                 tickright = true;
 238         }
 239
 240         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 241         cairo_t* cr = cairo_create (surface);
 242         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 243
 244         Pango::AttrList audio_font_attributes;
 245         Pango::AttrList midi_font_attributes;
 246         Pango::AttrList unit_font_attributes;
 247
 248         Pango::AttrFontDesc* font_attr;
 249         Pango::FontDescription font;
 250
 251         font = Pango::FontDescription ("ArdourMono");
 252         double fixfontsize = 81920.0 / (double) ARDOUR::Config->get_font_scale();
 253
 254         font.set_weight (Pango::WEIGHT_NORMAL);
 255         font.set_size (9.0 * PANGO_SCALE * fixfontsize);
 256         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 257         audio_font_attributes.change (*font_attr);
 258         delete font_attr;
 259
 260         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 261         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 262         font.set_size (8.0 * PANGO_SCALE * fixfontsize);
 263         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 264         midi_font_attributes.change (*font_attr);
 265         delete font_attr;
 266
 267         font.set_size (6.0 * PANGO_SCALE * fixfontsize);
 268         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 269         unit_font_attributes.change (*font_attr);
 270         delete font_attr;
 271
 272         cairo_move_to (cr, 0, 0);
 273         cairo_rectangle (cr, 0, 0, width, height);
 274         {
 275                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
 276                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 277         }
 278         cairo_fill (cr);
 279
 280         height = min(max_pattern_metric_size, height);
 281         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 282
 283         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 284
 285                 Gdk::Color c;
 286
 287                 if (types.size() > 1) {
 288                         /* we're overlaying more than 1 set of marks, so use different colours */
 289                         Gdk::Color c;
 290                         switch (*i) {
 291                         case DataType::AUDIO:
 292                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 293                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 294                                 break;
 295                         case DataType::MIDI:
 296                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 297                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 298                                 break;
 299                         }
 300                 } else {
 301                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 302                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 303                 }
 304
 305                 std::map<int,float> points;
 306
 307                 switch (*i) {
 308                 case DataType::AUDIO:
 309                         layout->set_attributes (audio_font_attributes);
 310                         points.insert (std::pair<int,float>(-50, 0.5));
 311                         points.insert (std::pair<int,float>(-40, 0.5));
 312                         points.insert (std::pair<int,float>(-30, 0.5));
 313                         points.insert (std::pair<int,float>(-20, 1.0));
 314                         if (types.size() == 1) {
 315                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 316                                         points.insert (std::pair<int,float>(-24, 0.5));
 317                                 } else {
 318                                         points.insert (std::pair<int,float>(-25, 0.5));
 319                                 }
 320                                 points.insert (std::pair<int,float>(-15, 1.0));
 321                         }
 322                         points.insert (std::pair<int,float>(-18, 1.0));
 323                         points.insert (std::pair<int,float>(-10, 1.0));
 324                         points.insert (std::pair<int,float>( -5, 1.0));
 325                         points.insert (std::pair<int,float>( -3, 0.5));
 326                         points.insert (std::pair<int,float>(  0, 1.0));
 327                         points.insert (std::pair<int,float>(  3, 0.5));
 328                         break;
 329
 330                 case DataType::MIDI:
 331                         layout->set_attributes (midi_font_attributes);
 332                         points.insert (std::pair<int,float>(  0, 1.0));
 333                         if (types.size() == 1) {
 334                                 points.insert (std::pair<int,float>( 16, 0.5));
 335                                 points.insert (std::pair<int,float>( 32, 0.5));
 336                                 points.insert (std::pair<int,float>( 48, 0.5));
 337                                 points.insert (std::pair<int,float>( 64, 1.0));
 338                                 points.insert (std::pair<int,float>( 80, 0.5));
 339                                 points.insert (std::pair<int,float>( 96, 0.5));
 340                                 points.insert (std::pair<int,float>(100, 0.5));
 341                                 points.insert (std::pair<int,float>(112, 0.5));
 342                         } else {
 343                                 /* labels that don't overlay with dB */
 344                                 points.insert (std::pair<int,float>( 24, 0.5));
 345                                 points.insert (std::pair<int,float>( 48, 0.5));
 346                                 points.insert (std::pair<int,float>( 72, 0.5));
 347                         }
 348                         points.insert (std::pair<int,float>(127, 1.0));
 349                         break;
 350                 }
 351
 352                 char buf[32];
 353                 gint pos;
 354
 355                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 356
 357                         float fraction = 0;
 358                         switch (*i) {
 359                         case DataType::AUDIO:
 360                                 cairo_set_line_width (cr, (j->second));
 361                                 if (j->first >= 0) {
 362                                         cairo_set_source_rgb (cr,
 363                                                         UINT_RGBA_R_FLT(peakcolor),
 364                                                         UINT_RGBA_G_FLT(peakcolor),
 365                                                         UINT_RGBA_B_FLT(peakcolor));
 366                                 }
 367                                 fraction = log_meter (j->first);
 368                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 369                                 pos = height - (gint) floor (height * fraction);
 370                                 if (tickleft) {
 371                                         cairo_move_to(cr, width-1.5, pos + .5);
 372                                         cairo_line_to(cr, width, pos + .5);
 373                                         cairo_stroke (cr);
 374                                 } else if (tickright) {
 375                                         cairo_move_to(cr, 0, pos + .5);
 376                                         cairo_line_to(cr, 1.5, pos + .5);
 377                                         cairo_stroke (cr);
 378                                 }
 379                                 break;
 380                         case DataType::MIDI:
 381                                 cairo_set_line_width (cr, 1.0);
 382                                 fraction = (j->first) / 127.0;
 383                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 384                                 pos = 1 + height - (gint) rintf (height * fraction);
 385                                 pos = min (pos, height);
 386                                 if (tickleft) {
 387                                         cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 388                                         cairo_fill(cr);
 389                                 } else if (tickright) {
 390                                         cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 391                                         cairo_fill(cr);
 392                                 }
 393                                 break;
 394                         }
 395
 396                         layout->set_text(buf);
 397
 398                         /* we want logical extents, not ink extents here */
 399
 400                         int tw, th;
 401                         layout->get_pixel_size(tw, th);
 402
 403                         int p = pos - (th / 2) - 1;
 404                         p = min (p, height - th);
 405                         p = max (p, 0);
 406
 407                         cairo_move_to (cr, width-3-tw, p);
 408                         pango_cairo_show_layout (cr, layout->gobj());
 409                 }
 410         }
 411
 412         if (types.size() == 1) {
 413                 int tw, th;
 414                 layout->set_attributes (unit_font_attributes);
 415                 switch (types.at(0)) {
 416                         case DataType::AUDIO:
 417                                 layout->set_text("dBFS");
 418                                 layout->get_pixel_size(tw, th);
 419                                 break;
 420                         case DataType::MIDI:
 421                                 layout->set_text("vel");
 422                                 layout->get_pixel_size(tw, th);
 423                                 break;
 424                 }
 425                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 426                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 427                 cairo_move_to (cr, 2, height - th - 1.5);
 428                 pango_cairo_show_layout (cr, layout->gobj());
 429         }
 430
 431         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 432
 433         cairo_destroy (cr);
 434         cairo_surface_destroy (surface);
 435
 436         return pattern;
 437 }
 438
 439
 440 gint
 441 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 442 {
 443         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 444         cairo_t* cr;
 445
 446         cr = gdk_cairo_create (win->gobj());
 447
 448         /* clip to expose area */
 449
 450         gdk_cairo_rectangle (cr, &ev->area);
 451         cairo_clip (cr);
 452
 453         cairo_pattern_t* pattern;
 454         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 455
 456         if (i == ticks_patterns.end()) {
 457                 pattern = meter_render_ticks (*mta, types);
 458                 ticks_patterns[mta->get_name()] = pattern;
 459         } else {
 460                 pattern = i->second;
 461         }
 462
 463         cairo_move_to (cr, 0, 0);
 464         cairo_set_source (cr, pattern);
 465
 466         gint width, height;
 467         win->get_size (width, height);
 468
 469         cairo_rectangle (cr, 0, 0, width, height);
 470         cairo_fill (cr);
 471
 472         cairo_destroy (cr);
 473
 474         return true;
 475 }
 476
 477 gint
 478 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 479 {
 480         Glib::RefPtr<Gdk::Window> win (mma->get_window());
 481         cairo_t* cr;
 482
 483         cr = gdk_cairo_create (win->gobj());
 484
 485         /* clip to expose area */
 486
 487         gdk_cairo_rectangle (cr, &ev->area);
 488         cairo_clip (cr);
 489
 490         cairo_pattern_t* pattern;
 491         MetricPatterns::iterator i = metric_patterns.find (mma->get_name());
 492
 493         if (i == metric_patterns.end()) {
 494                 pattern = meter_render_metrics (*mma, types);
 495                 metric_patterns[mma->get_name()] = pattern;
 496         } else {
 497                 pattern = i->second;
 498         }
 499
 500         cairo_move_to (cr, 0, 0);
 501         cairo_set_source (cr, pattern);
 502
 503         gint width, height;
 504         win->get_size (width, height);
 505
 506         cairo_rectangle (cr, 0, 0, width, height);
 507         cairo_fill (cr);
 508
 509         cairo_destroy (cr);
 510
 511         return true;
 512 }
 513
 514 void
 515 ArdourMeter::meter_clear_pattern_cache(int which) {
 516         MetricPatterns::iterator i = metric_patterns.begin();
 517         TickPatterns::iterator j = ticks_patterns.begin();
 518
 519         while (i != metric_patterns.end()) {
 520                 int m = 4;
 521                 std::string n = i->first;
 522                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 523                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 524                 if (which & m) {
 525                         cairo_pattern_destroy(i->second);
 526                         metric_patterns.erase(i++);
 527                 } else {
 528                         ++i;
 529                 }
 530         }
 531
 532         while (j != ticks_patterns.end()) {
 533                 int m = 4;
 534                 std::string n = j->first;
 535                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 536                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 537                 if (which & m) {
 538                         cairo_pattern_destroy(j->second);
 539                         ticks_patterns.erase(j++);
 540                 } else {
 541                         ++j;
 542                 }
 543         }
 544         RedrawMetrics();
 545 }