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_ui.h"
  26 #include "utils.h"
  27 #include "logmeter.h"
  28 #include "meter_patterns.h"
  29
  30 #include "i18n.h"
  31
  32 using namespace ARDOUR;
  33 using namespace PBD;
  34 using namespace Gtk;
  35 using namespace Gtkmm2ext;
  36 using namespace std;
  37
  38
  39 static const int max_pattern_metric_size = 1026;
  40
  41 sigc::signal<void> ResetAllPeakDisplays;
  42 sigc::signal<void,ARDOUR::RouteGroup*> ResetGroupPeakDisplays;
  43
  44 cairo_pattern_t*
  45 meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
  46 {
  47         Glib::RefPtr<Gdk::Window> win (w.get_window());
  48
  49         bool background;
  50         gint width, height;
  51         win->get_size (width, height);
  52         background =
  53                    w.get_name().substr(w.get_name().length() - 4) == "Left"
  54                 || w.get_name().substr(w.get_name().length() - 5) == "Right";
  55
  56         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
  57         cairo_t* cr = cairo_create (surface);
  58
  59         cairo_move_to (cr, 0, 0);
  60         cairo_rectangle (cr, 0, 0, width, height);
  61         {
  62                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
  63                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  64         }
  65         cairo_fill (cr);
  66
  67         height = min(max_pattern_metric_size, height);
  68         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
  69
  70         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
  71
  72                 Gdk::Color c;
  73                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  74
  75                 if (types.size() > 1) {
  76                         /* we're overlaying more than 1 set of marks, so use different colours */
  77                         switch (*i) {
  78                         case DataType::AUDIO:
  79                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  80                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  81                                 break;
  82                         case DataType::MIDI:
  83                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
  84                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  85                                 break;
  86                         }
  87                 } else {
  88                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  89                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  90                 }
  91
  92                 std::map<int,float> points;
  93
  94                 switch (*i) {
  95                 case DataType::AUDIO:
  96                         points.insert (std::pair<int,float>(-60, 0.5));
  97                         points.insert (std::pair<int,float>(-50, 0.5));
  98                         points.insert (std::pair<int,float>(-40, 0.5));
  99                         points.insert (std::pair<int,float>(-30, 0.5));
 100                         points.insert (std::pair<int,float>(-25, 0.5));
 101                         points.insert (std::pair<int,float>(-20, 1.0));
 102
 103                         points.insert (std::pair<int,float>(-19, 0.5));
 104                         points.insert (std::pair<int,float>(-18, 1.0));
 105                         points.insert (std::pair<int,float>(-17, 0.5));
 106                         points.insert (std::pair<int,float>(-16, 0.5));
 107                         points.insert (std::pair<int,float>(-15, 1.0));
 108
 109                         points.insert (std::pair<int,float>(-14, 0.5));
 110                         points.insert (std::pair<int,float>(-13, 0.5));
 111                         points.insert (std::pair<int,float>(-12, 0.5));
 112                         points.insert (std::pair<int,float>(-11, 0.5));
 113                         points.insert (std::pair<int,float>(-10, 1.0));
 114
 115                         points.insert (std::pair<int,float>( -9, 0.5));
 116                         points.insert (std::pair<int,float>( -8, 0.5));
 117                         points.insert (std::pair<int,float>( -7, 0.5));
 118                         points.insert (std::pair<int,float>( -6, 0.5));
 119                         points.insert (std::pair<int,float>( -5, 1.0));
 120                         points.insert (std::pair<int,float>( -4, 0.5));
 121                         points.insert (std::pair<int,float>( -3, 0.5));
 122                         points.insert (std::pair<int,float>( -2, 0.5));
 123                         points.insert (std::pair<int,float>( -1, 0.5));
 124
 125                         points.insert (std::pair<int,float>(  0, 1.0));
 126                         points.insert (std::pair<int,float>(  1, 0.5));
 127                         points.insert (std::pair<int,float>(  2, 0.5));
 128                         points.insert (std::pair<int,float>(  3, 0.5));
 129                         points.insert (std::pair<int,float>(  4, 0.5));
 130                         points.insert (std::pair<int,float>(  5, 0.5));
 131                         break;
 132
 133                 case DataType::MIDI:
 134                         points.insert (std::pair<int,float>(  0, 1.0));
 135                         points.insert (std::pair<int,float>( 16, 0.5));
 136                         points.insert (std::pair<int,float>( 32, 0.5));
 137                         points.insert (std::pair<int,float>( 48, 0.5));
 138                         points.insert (std::pair<int,float>( 64, 1.0));
 139                         points.insert (std::pair<int,float>( 80, 0.5));
 140                         points.insert (std::pair<int,float>( 96, 0.5));
 141                         points.insert (std::pair<int,float>(100, 1.0));
 142                         points.insert (std::pair<int,float>(112, 0.5));
 143                         points.insert (std::pair<int,float>(127, 1.0));
 144                         break;
 145                 }
 146
 147                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 148                         cairo_set_line_width (cr, (j->second));
 149
 150                         float fraction = 0;
 151                         gint pos;
 152
 153                         switch (*i) {
 154                         case DataType::AUDIO:
 155                                 if (j->first >= 0 || j->first == -9) {
 156                                         cairo_set_source_rgb (cr,
 157                                                         UINT_RGBA_R_FLT(peakcolor),
 158                                                         UINT_RGBA_G_FLT(peakcolor),
 159                                                         UINT_RGBA_B_FLT(peakcolor));
 160                                 } else {
 161                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 162                                 }
 163                                 fraction = log_meter (j->first);
 164                                 pos = height - (gint) floor (height * fraction);
 165                                 cairo_move_to(cr, 0, pos + .5);
 166                                 cairo_line_to(cr, 3, pos + .5);
 167                                 cairo_stroke (cr);
 168                                 break;
 169                         case DataType::MIDI:
 170                                 fraction = (j->first) / 127.0;
 171                                 pos = 1 + height - (gint) floor (height * fraction);
 172                                 pos = min (pos, height);
 173                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 174                                 cairo_fill(cr);
 175                                 break;
 176                         }
 177                 }
 178         }
 179
 180         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 181
 182         cairo_destroy (cr);
 183         cairo_surface_destroy (surface);
 184
 185         return pattern;
 186 }
 187
 188
 189 cairo_pattern_t*
 190 meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 191 {
 192         Glib::RefPtr<Gdk::Window> win (w.get_window());
 193
 194         bool tickleft;
 195         bool background;
 196         gint width, height;
 197         win->get_size (width, height);
 198
 199         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 200         background = tickleft || w.get_name().substr(w.get_name().length() - 5) == "Right";
 201
 202         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 203         cairo_t* cr = cairo_create (surface);
 204         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 205
 206         Pango::AttrList audio_font_attributes;
 207         Pango::AttrList midi_font_attributes;
 208         Pango::AttrList unit_font_attributes;
 209
 210         Pango::AttrFontDesc* font_attr;
 211         Pango::FontDescription font;
 212
 213         font = Pango::FontDescription (""); // use defaults
 214         //font = get_font_for_style("gain-fader");
 215         //font = w.get_style()->get_font();
 216
 217         font.set_weight (Pango::WEIGHT_NORMAL);
 218         font.set_size (9.0 * PANGO_SCALE);
 219         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 220         audio_font_attributes.change (*font_attr);
 221         delete font_attr;
 222
 223         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 224         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 225         font.set_size (7.5 * PANGO_SCALE);
 226         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 227         midi_font_attributes.change (*font_attr);
 228         delete font_attr;
 229
 230         font.set_size (7.0 * PANGO_SCALE);
 231         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 232         unit_font_attributes.change (*font_attr);
 233         delete font_attr;
 234
 235         cairo_move_to (cr, 0, 0);
 236         cairo_rectangle (cr, 0, 0, width, height);
 237         {
 238                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
 239                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 240         }
 241         cairo_fill (cr);
 242
 243         height = min(max_pattern_metric_size, height);
 244         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 245
 246         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 247
 248                 Gdk::Color c;
 249
 250                 if (types.size() > 1) {
 251                         /* we're overlaying more than 1 set of marks, so use different colours */
 252                         Gdk::Color c;
 253                         switch (*i) {
 254                         case DataType::AUDIO:
 255                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 256                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 257                                 break;
 258                         case DataType::MIDI:
 259                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 260                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 261                                 break;
 262                         }
 263                 } else {
 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                 }
 267
 268                 std::map<int,float> points;
 269
 270                 switch (*i) {
 271                 case DataType::AUDIO:
 272                         layout->set_attributes (audio_font_attributes);
 273                         points.insert (std::pair<int,float>(-50, 0.5));
 274                         points.insert (std::pair<int,float>(-40, 0.5));
 275                         points.insert (std::pair<int,float>(-30, 0.5));
 276                         points.insert (std::pair<int,float>(-20, 1.0));
 277                         if (types.size() == 1) {
 278                                 points.insert (std::pair<int,float>(-25, 0.5));
 279                                 points.insert (std::pair<int,float>(-15, 1.0));
 280                         }
 281                         points.insert (std::pair<int,float>(-18, 1.0));
 282                         points.insert (std::pair<int,float>(-10, 1.0));
 283                         points.insert (std::pair<int,float>( -5, 1.0));
 284                         points.insert (std::pair<int,float>( -3, 0.5));
 285                         points.insert (std::pair<int,float>(  0, 1.0));
 286                         points.insert (std::pair<int,float>(  3, 0.5));
 287                         break;
 288
 289                 case DataType::MIDI:
 290                         layout->set_attributes (midi_font_attributes);
 291                         points.insert (std::pair<int,float>(  0, 1.0));
 292                         if (types.size() == 1) {
 293                                 points.insert (std::pair<int,float>( 16, 0.5));
 294                                 points.insert (std::pair<int,float>( 32, 0.5));
 295                                 points.insert (std::pair<int,float>( 48, 0.5));
 296                                 points.insert (std::pair<int,float>( 64, 1.0));
 297                                 points.insert (std::pair<int,float>( 80, 0.5));
 298                                 points.insert (std::pair<int,float>( 96, 0.5));
 299                                 points.insert (std::pair<int,float>(100, 0.5));
 300                                 points.insert (std::pair<int,float>(112, 0.5));
 301                         } else {
 302                                 /* labels that don't overlay with dB */
 303                                 points.insert (std::pair<int,float>( 24, 0.5));
 304                                 points.insert (std::pair<int,float>( 48, 0.5));
 305                                 points.insert (std::pair<int,float>( 72, 0.5));
 306                         }
 307                         points.insert (std::pair<int,float>(127, 1.0));
 308                         break;
 309                 }
 310
 311                 char buf[32];
 312                 gint pos;
 313
 314                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 315
 316                         float fraction = 0;
 317                         switch (*i) {
 318                         case DataType::AUDIO:
 319                                 cairo_set_line_width (cr, (j->second));
 320                                 if (j->first >= 0) {
 321                                         cairo_set_source_rgb (cr,
 322                                                         UINT_RGBA_R_FLT(peakcolor),
 323                                                         UINT_RGBA_G_FLT(peakcolor),
 324                                                         UINT_RGBA_B_FLT(peakcolor));
 325                                 }
 326                                 fraction = log_meter (j->first);
 327                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 328                                 pos = height - (gint) floor (height * fraction);
 329                                 if (tickleft) {
 330                                         cairo_move_to(cr, width-2.5, pos + .5);
 331                                         cairo_line_to(cr, width, pos + .5);
 332                                 } else {
 333                                         cairo_move_to(cr, 0, pos + .5);
 334                                         cairo_line_to(cr, 2.5, pos + .5);
 335                                 }
 336                                 cairo_stroke (cr);
 337                                 break;
 338                         case DataType::MIDI:
 339                                 cairo_set_line_width (cr, 1.0);
 340                                 fraction = (j->first) / 127.0;
 341                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 342                                 pos = 1 + height - (gint) rintf (height * fraction);
 343                                 pos = min (pos, height);
 344                                 if (tickleft) {
 345                                         cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 346                                 } else {
 347                                         cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 348                                 }
 349                                 cairo_fill(cr);
 350                                 break;
 351                         }
 352
 353                         layout->set_text(buf);
 354
 355                         /* we want logical extents, not ink extents here */
 356
 357                         int tw, th;
 358                         layout->get_pixel_size(tw, th);
 359
 360                         int p = pos - (th / 2);
 361                         p = min (p, height - th);
 362                         p = max (p, 0);
 363
 364                         cairo_move_to (cr, width-4-tw, p);
 365                         pango_cairo_show_layout (cr, layout->gobj());
 366                 }
 367         }
 368
 369         if (types.size() == 1) {
 370                 int tw, th;
 371                 layout->set_attributes (unit_font_attributes);
 372                 switch (types.at(0)) {
 373                         case DataType::AUDIO:
 374                                 layout->set_text("dBFS");
 375                                 layout->get_pixel_size(tw, th);
 376                                 break;
 377                         case DataType::MIDI:
 378                                 layout->set_text("vel");
 379                                 layout->get_pixel_size(tw, th);
 380                                 break;
 381                 }
 382                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 383                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 384                 cairo_move_to (cr, 1, height - th - 1.5);
 385                 pango_cairo_show_layout (cr, layout->gobj());
 386         }
 387
 388         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 389
 390         cairo_destroy (cr);
 391         cairo_surface_destroy (surface);
 392
 393         return pattern;
 394 }
 395
 396
 397 typedef std::map<std::string,cairo_pattern_t*> TickPatterns;
 398 static  TickPatterns ticks_patterns;
 399
 400 gint meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 401 {
 402         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 403         cairo_t* cr;
 404
 405         cr = gdk_cairo_create (win->gobj());
 406
 407         /* clip to expose area */
 408
 409         gdk_cairo_rectangle (cr, &ev->area);
 410         cairo_clip (cr);
 411
 412         cairo_pattern_t* pattern;
 413         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 414
 415         if (i == ticks_patterns.end()) {
 416                 pattern = meter_render_ticks (*mta, types);
 417                 ticks_patterns[mta->get_name()] = pattern;
 418         } else {
 419                 pattern = i->second;
 420         }
 421
 422         cairo_move_to (cr, 0, 0);
 423         cairo_set_source (cr, pattern);
 424
 425         gint width, height;
 426         win->get_size (width, height);
 427
 428         cairo_rectangle (cr, 0, 0, width, height);
 429         cairo_fill (cr);
 430
 431         cairo_destroy (cr);
 432
 433         return true;
 434 }
 435
 436 typedef std::map<std::string,cairo_pattern_t*> MetricPatterns;
 437 static  MetricPatterns metric_patterns;
 438
 439 gint meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 440 {
 441         Glib::RefPtr<Gdk::Window> win (mma->get_window());
 442         cairo_t* cr;
 443
 444         cr = gdk_cairo_create (win->gobj());
 445
 446         /* clip to expose area */
 447
 448         gdk_cairo_rectangle (cr, &ev->area);
 449         cairo_clip (cr);
 450
 451         cairo_pattern_t* pattern;
 452         MetricPatterns::iterator i = metric_patterns.find (mma->get_name());
 453
 454         if (i == metric_patterns.end()) {
 455                 pattern = meter_render_metrics (*mma, types);
 456                 metric_patterns[mma->get_name()] = pattern;
 457         } else {
 458                 pattern = i->second;
 459         }
 460
 461         cairo_move_to (cr, 0, 0);
 462         cairo_set_source (cr, pattern);
 463
 464         gint width, height;
 465         win->get_size (width, height);
 466
 467         cairo_rectangle (cr, 0, 0, width, height);
 468         cairo_fill (cr);
 469
 470         cairo_destroy (cr);
 471
 472         return true;
 473 }
 474
 475 void meter_clear_pattern_cache() {
 476         metric_patterns.clear();
 477         ticks_patterns.clear();
 478 }