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
  39
  40 static const int max_pattern_metric_size = 1026;
  41
  42 sigc::signal<void> ResetAllPeakDisplays;
  43 sigc::signal<void,ARDOUR::Route*> ResetRoutePeakDisplays;
  44 sigc::signal<void,ARDOUR::RouteGroup*> ResetGroupPeakDisplays;
  45 sigc::signal<void> RedrawMetrics;
  46
  47 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> SetMeterTypeMulti;
  48
  49 cairo_pattern_t*
  50 meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
  51 {
  52         Glib::RefPtr<Gdk::Window> win (w.get_window());
  53
  54         bool background;
  55         gint width, height;
  56         win->get_size (width, height);
  57         background = types.size() == 0
  58                 || w.get_name().substr(w.get_name().length() - 4) == "Left"
  59                 || w.get_name().substr(w.get_name().length() - 5) == "Right";
  60
  61         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
  62         cairo_t* cr = cairo_create (surface);
  63
  64         cairo_move_to (cr, 0, 0);
  65         cairo_rectangle (cr, 0, 0, width, height);
  66         {
  67                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
  68                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  69         }
  70         cairo_fill (cr);
  71
  72         height = min(max_pattern_metric_size, height);
  73         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
  74
  75         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
  76
  77                 Gdk::Color c;
  78                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  79
  80                 if (types.size() > 1) {
  81                         /* we're overlaying more than 1 set of marks, so use different colours */
  82                         switch (*i) {
  83                         case DataType::AUDIO:
  84                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  85                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  86                                 break;
  87                         case DataType::MIDI:
  88                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
  89                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  90                                 break;
  91                         }
  92                 } else {
  93                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  94                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  95                 }
  96
  97                 std::map<int,float> points;
  98
  99                 switch (*i) {
 100                 case DataType::AUDIO:
 101                         points.insert (std::pair<int,float>(-60, 0.5));
 102                         points.insert (std::pair<int,float>(-50, 0.5));
 103                         points.insert (std::pair<int,float>(-40, 0.5));
 104                         points.insert (std::pair<int,float>(-30, 0.5));
 105                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 106                                 points.insert (std::pair<int,float>(-24, 0.5));
 107                         } else {
 108                                 points.insert (std::pair<int,float>(-25, 0.5));
 109                         }
 110                         points.insert (std::pair<int,float>(-20, 1.0));
 111
 112                         points.insert (std::pair<int,float>(-19, 0.5));
 113                         points.insert (std::pair<int,float>(-18, 1.0));
 114                         points.insert (std::pair<int,float>(-17, 0.5));
 115                         points.insert (std::pair<int,float>(-16, 0.5));
 116                         points.insert (std::pair<int,float>(-15, 1.0));
 117
 118                         points.insert (std::pair<int,float>(-14, 0.5));
 119                         points.insert (std::pair<int,float>(-13, 0.5));
 120                         points.insert (std::pair<int,float>(-12, 0.5));
 121                         points.insert (std::pair<int,float>(-11, 0.5));
 122                         points.insert (std::pair<int,float>(-10, 1.0));
 123
 124                         points.insert (std::pair<int,float>( -9, 0.5));
 125                         points.insert (std::pair<int,float>( -8, 0.5));
 126                         points.insert (std::pair<int,float>( -7, 0.5));
 127                         points.insert (std::pair<int,float>( -6, 0.5));
 128                         points.insert (std::pair<int,float>( -5, 1.0));
 129                         points.insert (std::pair<int,float>( -4, 0.5));
 130                         points.insert (std::pair<int,float>( -3, 0.5));
 131                         points.insert (std::pair<int,float>( -2, 0.5));
 132                         points.insert (std::pair<int,float>( -1, 0.5));
 133
 134                         points.insert (std::pair<int,float>(  0, 1.0));
 135                         points.insert (std::pair<int,float>(  1, 0.5));
 136                         points.insert (std::pair<int,float>(  2, 0.5));
 137                         points.insert (std::pair<int,float>(  3, 0.5));
 138                         points.insert (std::pair<int,float>(  4, 0.5));
 139                         points.insert (std::pair<int,float>(  5, 0.5));
 140                         break;
 141
 142                 case DataType::MIDI:
 143                         points.insert (std::pair<int,float>(  0, 1.0));
 144                         points.insert (std::pair<int,float>( 16, 0.5));
 145                         points.insert (std::pair<int,float>( 32, 0.5));
 146                         points.insert (std::pair<int,float>( 48, 0.5));
 147                         points.insert (std::pair<int,float>( 64, 1.0));
 148                         points.insert (std::pair<int,float>( 80, 0.5));
 149                         points.insert (std::pair<int,float>( 96, 0.5));
 150                         points.insert (std::pair<int,float>(100, 1.0));
 151                         points.insert (std::pair<int,float>(112, 0.5));
 152                         points.insert (std::pair<int,float>(127, 1.0));
 153                         break;
 154                 }
 155
 156                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 157                         cairo_set_line_width (cr, (j->second));
 158
 159                         float fraction = 0;
 160                         gint pos;
 161
 162                         switch (*i) {
 163                         case DataType::AUDIO:
 164                                 if (j->first >= 0 || j->first == -9) {
 165                                         cairo_set_source_rgb (cr,
 166                                                         UINT_RGBA_R_FLT(peakcolor),
 167                                                         UINT_RGBA_G_FLT(peakcolor),
 168                                                         UINT_RGBA_B_FLT(peakcolor));
 169                                 } else {
 170                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 171                                 }
 172                                 fraction = log_meter (j->first);
 173                                 pos = height - (gint) floor (height * fraction);
 174                                 cairo_move_to(cr, 0, pos + .5);
 175                                 cairo_line_to(cr, 3, pos + .5);
 176                                 cairo_stroke (cr);
 177                                 break;
 178                         case DataType::MIDI:
 179                                 fraction = (j->first) / 127.0;
 180                                 pos = 1 + height - (gint) floor (height * fraction);
 181                                 pos = min (pos, height);
 182                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 183                                 cairo_fill(cr);
 184                                 break;
 185                         }
 186                 }
 187         }
 188
 189         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 190
 191         cairo_destroy (cr);
 192         cairo_surface_destroy (surface);
 193
 194         return pattern;
 195 }
 196
 197
 198 cairo_pattern_t*
 199 meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 200 {
 201         Glib::RefPtr<Gdk::Window> win (w.get_window());
 202
 203         bool tickleft;
 204         bool background;
 205         gint width, height;
 206         win->get_size (width, height);
 207
 208         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 209         background = types.size() == 0 || tickleft || w.get_name().substr(w.get_name().length() - 5) == "Right";
 210
 211         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 212         cairo_t* cr = cairo_create (surface);
 213         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 214
 215         Pango::AttrList audio_font_attributes;
 216         Pango::AttrList midi_font_attributes;
 217         Pango::AttrList unit_font_attributes;
 218
 219         Pango::AttrFontDesc* font_attr;
 220         Pango::FontDescription font;
 221
 222         font = Pango::FontDescription (""); // use defaults
 223         //font = get_font_for_style("gain-fader");
 224         //font = w.get_style()->get_font();
 225
 226         font.set_weight (Pango::WEIGHT_NORMAL);
 227         font.set_size (9.0 * PANGO_SCALE);
 228         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 229         audio_font_attributes.change (*font_attr);
 230         delete font_attr;
 231
 232         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 233         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 234         font.set_size (7.5 * PANGO_SCALE);
 235         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 236         midi_font_attributes.change (*font_attr);
 237         delete font_attr;
 238
 239         font.set_size (7.0 * PANGO_SCALE);
 240         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 241         unit_font_attributes.change (*font_attr);
 242         delete font_attr;
 243
 244         cairo_move_to (cr, 0, 0);
 245         cairo_rectangle (cr, 0, 0, width, height);
 246         {
 247                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
 248                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 249         }
 250         cairo_fill (cr);
 251
 252         height = min(max_pattern_metric_size, height);
 253         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 254
 255         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 256
 257                 Gdk::Color c;
 258
 259                 if (types.size() > 1) {
 260                         /* we're overlaying more than 1 set of marks, so use different colours */
 261                         Gdk::Color c;
 262                         switch (*i) {
 263                         case DataType::AUDIO:
 264                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 265                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 266                                 break;
 267                         case DataType::MIDI:
 268                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 269                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 270                                 break;
 271                         }
 272                 } else {
 273                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 274                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 275                 }
 276
 277                 std::map<int,float> points;
 278
 279                 switch (*i) {
 280                 case DataType::AUDIO:
 281                         layout->set_attributes (audio_font_attributes);
 282                         points.insert (std::pair<int,float>(-50, 0.5));
 283                         points.insert (std::pair<int,float>(-40, 0.5));
 284                         points.insert (std::pair<int,float>(-30, 0.5));
 285                         points.insert (std::pair<int,float>(-20, 1.0));
 286                         if (types.size() == 1) {
 287                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 288                                         points.insert (std::pair<int,float>(-24, 0.5));
 289                                 } else {
 290                                         points.insert (std::pair<int,float>(-25, 0.5));
 291                                 }
 292                                 points.insert (std::pair<int,float>(-15, 1.0));
 293                         }
 294                         points.insert (std::pair<int,float>(-18, 1.0));
 295                         points.insert (std::pair<int,float>(-10, 1.0));
 296                         points.insert (std::pair<int,float>( -5, 1.0));
 297                         points.insert (std::pair<int,float>( -3, 0.5));
 298                         points.insert (std::pair<int,float>(  0, 1.0));
 299                         points.insert (std::pair<int,float>(  3, 0.5));
 300                         break;
 301
 302                 case DataType::MIDI:
 303                         layout->set_attributes (midi_font_attributes);
 304                         points.insert (std::pair<int,float>(  0, 1.0));
 305                         if (types.size() == 1) {
 306                                 points.insert (std::pair<int,float>( 16, 0.5));
 307                                 points.insert (std::pair<int,float>( 32, 0.5));
 308                                 points.insert (std::pair<int,float>( 48, 0.5));
 309                                 points.insert (std::pair<int,float>( 64, 1.0));
 310                                 points.insert (std::pair<int,float>( 80, 0.5));
 311                                 points.insert (std::pair<int,float>( 96, 0.5));
 312                                 points.insert (std::pair<int,float>(100, 0.5));
 313                                 points.insert (std::pair<int,float>(112, 0.5));
 314                         } else {
 315                                 /* labels that don't overlay with dB */
 316                                 points.insert (std::pair<int,float>( 24, 0.5));
 317                                 points.insert (std::pair<int,float>( 48, 0.5));
 318                                 points.insert (std::pair<int,float>( 72, 0.5));
 319                         }
 320                         points.insert (std::pair<int,float>(127, 1.0));
 321                         break;
 322                 }
 323
 324                 char buf[32];
 325                 gint pos;
 326
 327                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 328
 329                         float fraction = 0;
 330                         switch (*i) {
 331                         case DataType::AUDIO:
 332                                 cairo_set_line_width (cr, (j->second));
 333                                 if (j->first >= 0) {
 334                                         cairo_set_source_rgb (cr,
 335                                                         UINT_RGBA_R_FLT(peakcolor),
 336                                                         UINT_RGBA_G_FLT(peakcolor),
 337                                                         UINT_RGBA_B_FLT(peakcolor));
 338                                 }
 339                                 fraction = log_meter (j->first);
 340                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 341                                 pos = height - (gint) floor (height * fraction);
 342                                 if (tickleft) {
 343                                         cairo_move_to(cr, width-2.5, pos + .5);
 344                                         cairo_line_to(cr, width, pos + .5);
 345                                 } else {
 346                                         cairo_move_to(cr, 0, pos + .5);
 347                                         cairo_line_to(cr, 2.5, pos + .5);
 348                                 }
 349                                 cairo_stroke (cr);
 350                                 break;
 351                         case DataType::MIDI:
 352                                 cairo_set_line_width (cr, 1.0);
 353                                 fraction = (j->first) / 127.0;
 354                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 355                                 pos = 1 + height - (gint) rintf (height * fraction);
 356                                 pos = min (pos, height);
 357                                 if (tickleft) {
 358                                         cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 359                                 } else {
 360                                         cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 361                                 }
 362                                 cairo_fill(cr);
 363                                 break;
 364                         }
 365
 366                         layout->set_text(buf);
 367
 368                         /* we want logical extents, not ink extents here */
 369
 370                         int tw, th;
 371                         layout->get_pixel_size(tw, th);
 372
 373                         int p = pos - (th / 2);
 374                         p = min (p, height - th);
 375                         p = max (p, 0);
 376
 377                         cairo_move_to (cr, width-4-tw, p);
 378                         pango_cairo_show_layout (cr, layout->gobj());
 379                 }
 380         }
 381
 382         if (types.size() == 1) {
 383                 int tw, th;
 384                 layout->set_attributes (unit_font_attributes);
 385                 switch (types.at(0)) {
 386                         case DataType::AUDIO:
 387                                 layout->set_text("dBFS");
 388                                 layout->get_pixel_size(tw, th);
 389                                 break;
 390                         case DataType::MIDI:
 391                                 layout->set_text("vel");
 392                                 layout->get_pixel_size(tw, th);
 393                                 break;
 394                 }
 395                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 396                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 397                 cairo_move_to (cr, 2, height - th - 1.5);
 398                 pango_cairo_show_layout (cr, layout->gobj());
 399         }
 400
 401         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 402
 403         cairo_destroy (cr);
 404         cairo_surface_destroy (surface);
 405
 406         return pattern;
 407 }
 408
 409
 410 typedef std::map<std::string,cairo_pattern_t*> TickPatterns;
 411 static  TickPatterns ticks_patterns;
 412
 413 gint meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 414 {
 415         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 416         cairo_t* cr;
 417
 418         cr = gdk_cairo_create (win->gobj());
 419
 420         /* clip to expose area */
 421
 422         gdk_cairo_rectangle (cr, &ev->area);
 423         cairo_clip (cr);
 424
 425         cairo_pattern_t* pattern;
 426         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 427
 428         if (i == ticks_patterns.end()) {
 429                 pattern = meter_render_ticks (*mta, types);
 430                 ticks_patterns[mta->get_name()] = pattern;
 431         } else {
 432                 pattern = i->second;
 433         }
 434
 435         cairo_move_to (cr, 0, 0);
 436         cairo_set_source (cr, pattern);
 437
 438         gint width, height;
 439         win->get_size (width, height);
 440
 441         cairo_rectangle (cr, 0, 0, width, height);
 442         cairo_fill (cr);
 443
 444         cairo_destroy (cr);
 445
 446         return true;
 447 }
 448
 449 typedef std::map<std::string,cairo_pattern_t*> MetricPatterns;
 450 static  MetricPatterns metric_patterns;
 451
 452 gint meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 453 {
 454         Glib::RefPtr<Gdk::Window> win (mma->get_window());
 455         cairo_t* cr;
 456
 457         cr = gdk_cairo_create (win->gobj());
 458
 459         /* clip to expose area */
 460
 461         gdk_cairo_rectangle (cr, &ev->area);
 462         cairo_clip (cr);
 463
 464         cairo_pattern_t* pattern;
 465         MetricPatterns::iterator i = metric_patterns.find (mma->get_name());
 466
 467         if (i == metric_patterns.end()) {
 468                 pattern = meter_render_metrics (*mma, types);
 469                 metric_patterns[mma->get_name()] = pattern;
 470         } else {
 471                 pattern = i->second;
 472         }
 473
 474         cairo_move_to (cr, 0, 0);
 475         cairo_set_source (cr, pattern);
 476
 477         gint width, height;
 478         win->get_size (width, height);
 479
 480         cairo_rectangle (cr, 0, 0, width, height);
 481         cairo_fill (cr);
 482
 483         cairo_destroy (cr);
 484
 485         return true;
 486 }
 487
 488 void meter_clear_pattern_cache(int which) {
 489         MetricPatterns::iterator i = metric_patterns.begin();
 490         TickPatterns::iterator j = ticks_patterns.begin();
 491
 492         while (i != metric_patterns.end()) {
 493                 int m = 4;
 494                 std::string n = i->first;
 495                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 496                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 497                 if (which & m) {
 498                         cairo_pattern_destroy(i->second);
 499                         metric_patterns.erase(i++);
 500                 } else {
 501                         ++i;
 502                 }
 503         }
 504
 505         while (j != ticks_patterns.end()) {
 506                 int m = 4;
 507                 std::string n = j->first;
 508                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 509                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 510                 if (which & m) {
 511                         cairo_pattern_destroy(j->second);
 512                         ticks_patterns.erase(j++);
 513                 } else {
 514                         ++j;
 515                 }
 516         }
 517         RedrawMetrics();
 518 }