src/wx/audio_mapping_view.cc

   1 /*
   2     Copyright (C) 2013-2019 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 /** @file  src/wx/audio_mapping_view.cc
  22  *  @brief AudioMappingView class and helpers.
  23  */
  24
  25 #include "audio_mapping_view.h"
  26 #include "wx_util.h"
  27 #include "audio_gain_dialog.h"
  28 #include "lib/audio_mapping.h"
  29 #include "lib/util.h"
  30 #include <dcp/locale_convert.h>
  31 #include <dcp/types.h>
  32 #include <wx/wx.h>
  33 #include <wx/renderer.h>
  34 #include <wx/grid.h>
  35 #include <wx/graphics.h>
  36 #include <boost/foreach.hpp>
  37 #include <iostream>
  38
  39 using std::cout;
  40 using std::list;
  41 using std::string;
  42 using std::min;
  43 using std::max;
  44 using std::vector;
  45 using std::pair;
  46 using std::make_pair;
  47 using boost::shared_ptr;
  48 using boost::optional;
  49 using dcp::locale_convert;
  50
  51 #define INDICATOR_SIZE 20
  52 #define GRID_SPACING 32
  53 #define LEFT_WIDTH (GRID_SPACING * 3)
  54 #define TOP_HEIGHT (GRID_SPACING * 2)
  55
  56 enum {
  57         ID_off = 1,
  58         ID_full = 2,
  59         ID_minus6dB = 3,
  60         ID_edit = 4
  61 };
  62
  63 AudioMappingView::AudioMappingView (wxWindow* parent)
  64         : wxPanel (parent, wxID_ANY)
  65         , _menu_input (0)
  66         , _menu_output (1)
  67 {
  68         _menu = new wxMenu;
  69         _menu->Append (ID_off, _("Off"));
  70         _menu->Append (ID_full, _("Full"));
  71         _menu->Append (ID_minus6dB, _("-6dB"));
  72         _menu->Append (ID_edit, _("Edit..."));
  73
  74         _body = new wxPanel (this, wxID_ANY);
  75         _vertical_scroll = new wxScrollBar (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxSB_VERTICAL);
  76         _horizontal_scroll = new wxScrollBar (this, wxID_ANY);
  77
  78         Bind (wxEVT_SIZE, boost::bind(&AudioMappingView::size, this, _1));
  79         Bind (wxEVT_MENU, boost::bind(&AudioMappingView::off, this), ID_off);
  80         Bind (wxEVT_MENU, boost::bind(&AudioMappingView::full, this), ID_full);
  81         Bind (wxEVT_MENU, boost::bind(&AudioMappingView::minus6dB, this), ID_minus6dB);
  82         Bind (wxEVT_MENU, boost::bind(&AudioMappingView::edit, this), ID_edit);
  83         Bind (wxEVT_MOUSEWHEEL, boost::bind(&AudioMappingView::mouse_wheel, this, _1));
  84         _body->Bind (wxEVT_PAINT, boost::bind(&AudioMappingView::paint, this));
  85         _body->Bind (wxEVT_LEFT_DOWN, boost::bind(&AudioMappingView::left_down, this, _1));
  86         _body->Bind (wxEVT_RIGHT_DOWN, boost::bind(&AudioMappingView::right_down, this, _1));
  87         _body->Bind (wxEVT_MOTION, boost::bind(&AudioMappingView::motion, this, _1));
  88         _vertical_scroll->Bind (wxEVT_SCROLL_TOP, boost::bind(&AudioMappingView::scroll, this));
  89         _vertical_scroll->Bind (wxEVT_SCROLL_BOTTOM, boost::bind(&AudioMappingView::scroll, this));
  90         _vertical_scroll->Bind (wxEVT_SCROLL_LINEUP, boost::bind(&AudioMappingView::scroll, this));
  91         _vertical_scroll->Bind (wxEVT_SCROLL_LINEDOWN, boost::bind(&AudioMappingView::scroll, this));
  92         _vertical_scroll->Bind (wxEVT_SCROLL_PAGEUP, boost::bind(&AudioMappingView::scroll, this));
  93         _vertical_scroll->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind(&AudioMappingView::scroll, this));
  94         _vertical_scroll->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind(&AudioMappingView::scroll, this));
  95         _vertical_scroll->Bind (wxEVT_SCROLL_THUMBRELEASE, boost::bind(&AudioMappingView::scroll, this));
  96         _horizontal_scroll->Bind (wxEVT_SCROLL_TOP, boost::bind(&AudioMappingView::scroll, this));
  97         _horizontal_scroll->Bind (wxEVT_SCROLL_BOTTOM, boost::bind(&AudioMappingView::scroll, this));
  98         _horizontal_scroll->Bind (wxEVT_SCROLL_LINEUP, boost::bind(&AudioMappingView::scroll, this));
  99         _horizontal_scroll->Bind (wxEVT_SCROLL_LINEDOWN, boost::bind(&AudioMappingView::scroll, this));
 100         _horizontal_scroll->Bind (wxEVT_SCROLL_PAGEUP, boost::bind(&AudioMappingView::scroll, this));
 101         _horizontal_scroll->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind(&AudioMappingView::scroll, this));
 102         _horizontal_scroll->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind(&AudioMappingView::scroll, this));
 103         _horizontal_scroll->Bind (wxEVT_SCROLL_THUMBRELEASE, boost::bind(&AudioMappingView::scroll, this));
 104 }
 105
 106 void
 107 AudioMappingView::size (wxSizeEvent& ev)
 108 {
 109         setup ();
 110         ev.Skip ();
 111 }
 112
 113 void
 114 AudioMappingView::setup ()
 115 {
 116         wxSize const s = GetSize();
 117         int const w = _vertical_scroll->GetSize().GetWidth();
 118         int const h = _horizontal_scroll->GetSize().GetHeight();
 119
 120         _vertical_scroll->SetPosition (wxPoint(s.GetWidth() - w, 0));
 121         _vertical_scroll->SetSize (wxSize(w, max(0, s.GetHeight() - h)));
 122
 123         _body->SetSize (wxSize(max(0, s.GetWidth() - w), max(0, s.GetHeight() - h)));
 124
 125         _horizontal_scroll->SetPosition (wxPoint(0, s.GetHeight() - h));
 126         _horizontal_scroll->SetSize (wxSize(max(0, s.GetWidth() - w), h));
 127
 128         _vertical_scroll->SetScrollbar (
 129                 _vertical_scroll->GetThumbPosition(),
 130                 s.GetHeight() - h - 8,
 131                 GRID_SPACING * (2 + _input_channels.size()),
 132                 GRID_SPACING,
 133                 true
 134                 );
 135
 136         _horizontal_scroll->SetScrollbar (
 137                 _horizontal_scroll->GetThumbPosition(),
 138                 s.GetWidth() - w - 8,
 139                 GRID_SPACING * (3 + _output_channels.size()),
 140                 GRID_SPACING,
 141                 true);
 142 }
 143
 144 void
 145 AudioMappingView::scroll ()
 146 {
 147         Refresh ();
 148 }
 149
 150 void
 151 AudioMappingView::paint_static (wxDC& dc, wxGraphicsContext* gc)
 152 {
 153         gc->SetAntialiasMode (wxANTIALIAS_DEFAULT);
 154         dc.SetFont (wxSWISS_FONT->Bold());
 155         wxCoord label_width;
 156         wxCoord label_height;
 157
 158         /* DCP label at the top */
 159
 160         dc.GetTextExtent (_("DCP"), &label_width, &label_height);
 161         dc.DrawText (_("DCP"), LEFT_WIDTH + (_output_channels.size() * GRID_SPACING - label_width) / 2, (GRID_SPACING - label_height) / 2);
 162
 163         /* Content label on the left */
 164
 165         dc.GetTextExtent (_("Content"), &label_width, &label_height);
 166         dc.DrawRotatedText (
 167                 _("Content"),
 168                 (GRID_SPACING - label_height) / 2,
 169                 TOP_HEIGHT + (_input_channels.size() * GRID_SPACING + label_width) / 2,
 170                 90
 171                 );
 172
 173         dc.SetFont (*wxSWISS_FONT);
 174         gc->SetPen (*wxBLACK_PEN);
 175 }
 176
 177 void
 178 AudioMappingView::paint_column_labels (wxDC& dc, wxGraphicsContext* gc)
 179 {
 180         wxCoord label_width;
 181         wxCoord label_height;
 182         int N = 0;
 183         BOOST_FOREACH (string i, _output_channels) {
 184                 dc.GetTextExtent (std_to_wx(i), &label_width, &label_height);
 185                 dc.DrawText (std_to_wx(i), LEFT_WIDTH + GRID_SPACING * N + (GRID_SPACING - label_width) / 2, GRID_SPACING + (GRID_SPACING - label_height) / 2);
 186                 ++N;
 187         }
 188
 189         wxGraphicsPath lines = gc->CreatePath ();
 190         lines.MoveToPoint (LEFT_WIDTH, GRID_SPACING);
 191         lines.AddLineToPoint (LEFT_WIDTH + _output_channels.size() * GRID_SPACING, GRID_SPACING);
 192         lines.MoveToPoint (LEFT_WIDTH, GRID_SPACING * 2);
 193         lines.AddLineToPoint (LEFT_WIDTH + _output_channels.size() * GRID_SPACING, GRID_SPACING * 2);
 194         gc->StrokePath (lines);
 195 }
 196
 197 void
 198 AudioMappingView::paint_column_lines (wxGraphicsContext* gc)
 199 {
 200         wxGraphicsPath lines = gc->CreatePath ();
 201         for (size_t i = 0; i < _output_channels.size(); ++i) {
 202                 lines.MoveToPoint    (LEFT_WIDTH + GRID_SPACING * i, GRID_SPACING);
 203                 lines.AddLineToPoint (LEFT_WIDTH + GRID_SPACING * i, TOP_HEIGHT + _input_channels.size() * GRID_SPACING);
 204         }
 205         lines.MoveToPoint    (LEFT_WIDTH + GRID_SPACING * _output_channels.size(), GRID_SPACING);
 206         lines.AddLineToPoint (LEFT_WIDTH + GRID_SPACING * _output_channels.size(), TOP_HEIGHT + _input_channels.size() * GRID_SPACING);
 207         gc->StrokePath (lines);
 208 }
 209
 210 void
 211 AudioMappingView::paint_row_labels (wxDC& dc, wxGraphicsContext* gc)
 212 {
 213         wxCoord label_width;
 214         wxCoord label_height;
 215         wxGraphicsPath lines = gc->CreatePath ();
 216
 217         /* Row channel labels */
 218
 219         int N = 0;
 220         BOOST_FOREACH (string i, _input_channels) {
 221                 dc.GetTextExtent (std_to_wx(i), &label_width, &label_height);
 222                 dc.DrawText (std_to_wx(i), GRID_SPACING * 2 + (GRID_SPACING - label_width) / 2, TOP_HEIGHT + GRID_SPACING * N + (GRID_SPACING - label_height) / 2);
 223                 ++N;
 224         }
 225
 226         /* Vertical lines on the left */
 227
 228         for (int i = 1; i < 3; ++i) {
 229                 lines.MoveToPoint    (GRID_SPACING * i, TOP_HEIGHT);
 230                 lines.AddLineToPoint (GRID_SPACING * i, TOP_HEIGHT + _input_channels.size() * GRID_SPACING);
 231         }
 232
 233         /* Group labels and lines */
 234
 235         int y = TOP_HEIGHT;
 236         BOOST_FOREACH (Group i, _input_groups) {
 237                 dc.GetTextExtent (std_to_wx(i.name), &label_width, &label_height);
 238                 int const height = (i.to - i.from + 1) * GRID_SPACING;
 239                 dc.DrawRotatedText (
 240                         std_to_wx(i.name),
 241                         GRID_SPACING + (GRID_SPACING - label_height) / 2,
 242                         y + (height + label_width) / 2,
 243                         90
 244                         );
 245                 lines.MoveToPoint    (GRID_SPACING,     y);
 246                 lines.AddLineToPoint (GRID_SPACING * 2, y);
 247                 y += height;
 248         }
 249
 250         lines.MoveToPoint    (GRID_SPACING,     y);
 251         lines.AddLineToPoint (GRID_SPACING * 2, y);
 252
 253         gc->StrokePath (lines);
 254 }
 255
 256 void
 257 AudioMappingView::paint_row_lines (wxGraphicsContext* gc)
 258 {
 259         wxGraphicsPath lines = gc->CreatePath ();
 260         for (size_t i = 0; i < _input_channels.size(); ++i) {
 261                 lines.MoveToPoint (GRID_SPACING * 2, TOP_HEIGHT + GRID_SPACING * i);
 262                 lines.AddLineToPoint (LEFT_WIDTH + _output_channels.size() * GRID_SPACING, TOP_HEIGHT + GRID_SPACING * i);
 263         }
 264         lines.MoveToPoint (GRID_SPACING * 2, TOP_HEIGHT + GRID_SPACING * _input_channels.size());
 265         lines.AddLineToPoint (LEFT_WIDTH + _output_channels.size() * GRID_SPACING, TOP_HEIGHT + GRID_SPACING * _input_channels.size());
 266         gc->StrokePath (lines);
 267 }
 268
 269 void
 270 AudioMappingView::paint_indicators (wxDC& dc)
 271 {
 272         for (size_t x = 0; x < _output_channels.size(); ++x) {
 273                 for (size_t y = 0; y < _input_channels.size(); ++y) {
 274                         dc.SetBrush (*wxWHITE_BRUSH);
 275                         dc.DrawRectangle (
 276                                 wxRect(
 277                                         LEFT_WIDTH + x * GRID_SPACING + (GRID_SPACING - INDICATOR_SIZE) / 2,
 278                                         TOP_HEIGHT + y * GRID_SPACING + (GRID_SPACING - INDICATOR_SIZE) / 2,
 279                                         INDICATOR_SIZE, INDICATOR_SIZE
 280                                         )
 281                                 );
 282
 283                         float const value_dB = 20 * log10 (_map.get(y, x));
 284                         int const range = 18;
 285                         int height = 0;
 286                         if (value_dB > -range) {
 287                                 height = INDICATOR_SIZE * (1 + value_dB / range);
 288                         }
 289
 290                         dc.SetBrush (*wxTheBrushList->FindOrCreateBrush(wxColour (0, 255, 0), wxBRUSHSTYLE_SOLID));
 291                         dc.DrawRectangle (
 292                                 wxRect(
 293                                         LEFT_WIDTH + x * GRID_SPACING + (GRID_SPACING - INDICATOR_SIZE) / 2,
 294                                         TOP_HEIGHT + y * GRID_SPACING + (GRID_SPACING - INDICATOR_SIZE) / 2 + INDICATOR_SIZE - height,
 295                                         INDICATOR_SIZE, height
 296                                         )
 297                                 );
 298                 }
 299         }
 300 }
 301
 302 static
 303 void clip (wxDC& dc, wxGraphicsContext* gc, int x, int y, int w, int h)
 304 {
 305         dc.SetClippingRegion (x, y, w, h);
 306         gc->Clip (x, y, w, h);
 307 }
 308
 309 static
 310 void translate (wxDC& dc, wxGraphicsContext* gc, int x, int y)
 311 {
 312         gc->PushState ();
 313         gc->Translate (-x, -y);
 314         dc.SetLogicalOrigin (x, y);
 315 }
 316
 317 static
 318 void restore (wxDC& dc, wxGraphicsContext* gc)
 319 {
 320         dc.SetLogicalOrigin (0, 0);
 321         gc->PopState ();
 322         dc.DestroyClippingRegion ();
 323         gc->ResetClip ();
 324 }
 325
 326 void
 327 AudioMappingView::paint ()
 328 {
 329         wxPaintDC dc (_body);
 330
 331         wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
 332         if (!gc) {
 333                 return;
 334         }
 335
 336         int const hs = _horizontal_scroll->GetThumbPosition ();
 337         int const vs = _vertical_scroll->GetThumbPosition ();
 338
 339         paint_static (dc, gc);
 340
 341         clip (dc, gc, LEFT_WIDTH, 0, GRID_SPACING * _output_channels.size(), GRID_SPACING * (2 + _input_channels.size()));
 342         translate (dc, gc, hs, 0);
 343         paint_column_labels (dc, gc);
 344         restore (dc, gc);
 345
 346         clip (dc, gc, 0, TOP_HEIGHT, GRID_SPACING * (3 + _output_channels.size()), GRID_SPACING * _input_channels.size());
 347         translate (dc, gc, 0, vs);
 348         paint_row_labels (dc, gc);
 349         restore (dc, gc);
 350
 351         clip (dc, gc, GRID_SPACING * 2, TOP_HEIGHT, GRID_SPACING * (1 + _output_channels.size()), GRID_SPACING * _input_channels.size());
 352         translate (dc, gc, hs, vs);
 353         paint_row_lines (gc);
 354         restore (dc, gc);
 355
 356         clip (dc, gc, LEFT_WIDTH, GRID_SPACING, GRID_SPACING * (1 + _output_channels.size()), GRID_SPACING * _input_channels.size());
 357         translate (dc, gc, hs, vs);
 358         paint_column_lines (gc);
 359         restore (dc, gc);
 360
 361         clip (dc, gc, LEFT_WIDTH, TOP_HEIGHT, GRID_SPACING * _output_channels.size(), GRID_SPACING * _input_channels.size());
 362         translate (dc, gc, hs, vs);
 363         paint_indicators (dc);
 364         restore (dc, gc);
 365
 366         delete gc;
 367 }
 368
 369 optional<pair<int, int> >
 370 AudioMappingView::mouse_event_to_channels (wxMouseEvent& ev) const
 371 {
 372         int const x = ev.GetX() + _horizontal_scroll->GetThumbPosition();
 373         int const y = ev.GetY() + _vertical_scroll->GetThumbPosition();
 374
 375         if (x <= LEFT_WIDTH || y < TOP_HEIGHT) {
 376                 return optional<pair<int, int> >();
 377         }
 378
 379         int const input = (y - TOP_HEIGHT) / GRID_SPACING;
 380         int const output = (x - LEFT_WIDTH) / GRID_SPACING;
 381
 382         if (input >= int(_input_channels.size()) || output >= int(_output_channels.size())) {
 383                 return optional<pair<int, int> >();
 384         }
 385
 386         return make_pair (input, output);
 387 }
 388
 389 void
 390 AudioMappingView::left_down (wxMouseEvent& ev)
 391 {
 392         optional<pair<int, int> > channels = mouse_event_to_channels (ev);
 393         if (!channels) {
 394                 return;
 395         }
 396
 397         if (_map.get(channels->first, channels->second) > 0) {
 398                 _map.set (channels->first, channels->second, 0);
 399         } else {
 400                 _map.set (channels->first, channels->second, 1);
 401         }
 402
 403         map_values_changed ();
 404 }
 405
 406 void
 407 AudioMappingView::right_down (wxMouseEvent& ev)
 408 {
 409         optional<pair<int, int> > channels = mouse_event_to_channels (ev);
 410         if (!channels) {
 411                 return;
 412         }
 413
 414         _menu_input = channels->first;
 415         _menu_output = channels->second;
 416         PopupMenu (_menu, ev.GetPosition());
 417 }
 418
 419 void
 420 AudioMappingView::mouse_wheel (wxMouseEvent& ev)
 421 {
 422         if (ev.ShiftDown()) {
 423                 _horizontal_scroll->SetThumbPosition (
 424                         _horizontal_scroll->GetThumbPosition() + (ev.GetWheelRotation() > 0 ? -GRID_SPACING : GRID_SPACING)
 425                         );
 426
 427         } else {
 428                 _vertical_scroll->SetThumbPosition (
 429                         _vertical_scroll->GetThumbPosition() + (ev.GetWheelRotation() > 0 ? -GRID_SPACING : GRID_SPACING)
 430                         );
 431         }
 432         Refresh ();
 433 }
 434
 435 /** Called when any gain value has changed */
 436 void
 437 AudioMappingView::map_values_changed ()
 438 {
 439         Changed (_map);
 440         _last_tooltip_channels = optional<pair<int, int> >();
 441         Refresh ();
 442 }
 443
 444 void
 445 AudioMappingView::off ()
 446 {
 447         _map.set (_menu_input, _menu_output, 0);
 448         map_values_changed ();
 449 }
 450
 451 void
 452 AudioMappingView::full ()
 453 {
 454         _map.set (_menu_input, _menu_output, 1);
 455         map_values_changed ();
 456 }
 457
 458 void
 459 AudioMappingView::minus6dB ()
 460 {
 461         _map.set (_menu_input, _menu_output, pow (10, -6.0 / 20));
 462         map_values_changed ();
 463 }
 464
 465 void
 466 AudioMappingView::edit ()
 467 {
 468         int const d = _menu_output - 1;
 469
 470         AudioGainDialog* dialog = new AudioGainDialog (this, _menu_input, _menu_output - 1, _map.get(_menu_input, d));
 471         if (dialog->ShowModal() == wxID_OK) {
 472                 _map.set (_menu_input, d, dialog->value ());
 473                 map_values_changed ();
 474         }
 475
 476         dialog->Destroy ();
 477 }
 478
 479 void
 480 AudioMappingView::set (AudioMapping map)
 481 {
 482         _map = map;
 483         Refresh ();
 484 }
 485
 486 void
 487 AudioMappingView::set_input_channels (vector<string> const & names)
 488 {
 489         _input_channels = names;
 490         setup ();
 491         Refresh ();
 492 }
 493
 494 void
 495 AudioMappingView::set_output_channels (vector<string> const & names)
 496 {
 497         _output_channels = names;
 498         setup ();
 499         Refresh ();
 500 }
 501
 502 void
 503 AudioMappingView::motion (wxMouseEvent& ev)
 504 {
 505         optional<pair<int, int> > channels = mouse_event_to_channels (ev);
 506         if (!channels) {
 507                 SetToolTip ("");
 508                 _last_tooltip_channels = channels;
 509                 return;
 510         }
 511
 512         if (channels != _last_tooltip_channels) {
 513                 wxString s;
 514                 float const gain = _map.get(channels->first, channels->second);
 515                 if (gain == 0) {
 516                         s = wxString::Format (_("No audio will be passed from content channel %d to DCP channel %d."), channels->first + 1, channels->second + 1);
 517                 } else if (gain == 1) {
 518                         s = wxString::Format (_("Audio will be passed from content channel %d to DCP channel %d unaltered."), channels->first + 1, channels->second + 1);
 519                 } else {
 520                         float const dB = 20 * log10 (gain);
 521                         s = wxString::Format (_("Audio will be passed from content channel %d to DCP channel %d with gain %.1fdB."), channels->first + 1, channels->second + 1, dB);
 522                 }
 523
 524                 SetToolTip (s + " " + _("Right click to change gain."));
 525                 _last_tooltip_channels = channels;
 526         }
 527
 528         ev.Skip ();
 529 }
 530
 531 void
 532 AudioMappingView::set_input_groups (vector<Group> const & groups)
 533 {
 534         _input_groups = groups;
 535 }