src/app.cpp

   1 /*
   2  * Copyright (c) 2017 TOYOTA MOTOR CORPORATION
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <fstream>
  18 #include <regex>
  19
  20 #include "app.hpp"
  21 #include "../include/json.hpp"
  22
  23
  24 namespace wm {
  25
  26 /* DrawingArea name used by "{layout}.{area}" */
  27 const char kNameLayoutNormal[] = "normal";
  28 const char kNameLayoutSplit[]  = "split";
  29 const char kNameAreaFull[]     = "full";
  30 const char kNameAreaMain[]     = "main";
  31 const char kNameAreaSub[]      = "sub";
  32
  33 /* Key for json obejct */
  34 const char kKeyDrawingName[] = "drawing_name";
  35 const char kKeyDrawingArea[] = "drawing_area";
  36 const char kKeyDrawingRect[] = "drawing_rect";
  37 const char kKeyX[]           = "x";
  38 const char kKeyY[]           = "y";
  39 const char kKeyWidth[]       = "width";
  40 const char kKeyHeight[]      = "height";
  41 const char kKeyWidthPixel[]  = "width_pixel";
  42 const char kKeyHeightPixel[] = "height_pixel";
  43 const char kKeyWidthMm[]     = "width_mm";
  44 const char kKeyHeightMm[]    = "height_mm";
  45
  46 namespace
  47 {
  48
  49 using nlohmann::json;
  50
  51 result<json> file_to_json(char const *filename)
  52 {
  53     json j;
  54     std::ifstream i(filename);
  55     if (i.fail())
  56     {
  57         HMI_DEBUG("wm", "Could not open config file, so use default layer information");
  58         j = default_layers_json;
  59     }
  60     else
  61     {
  62         i >> j;
  63     }
  64
  65     return Ok(j);
  66 }
  67
  68 struct result<layer_map> load_layer_map(char const *filename)
  69 {
  70     HMI_DEBUG("wm", "loading IDs from %s", filename);
  71
  72     auto j = file_to_json(filename);
  73     if (j.is_err())
  74     {
  75         return Err<layer_map>(j.unwrap_err());
  76     }
  77     json jids = j.unwrap();
  78
  79     return to_layer_map(jids);
  80 }
  81
  82 } // namespace
  83
  84 /**
  85  * App Impl
  86  */
  87 App::App(wl::display *d)
  88     : chooks{this},
  89       display{d},
  90       controller{},
  91       outputs(),
  92       config(),
  93       layers(),
  94       id_alloc{},
  95       pending_events(false),
  96       policy{}
  97 {
  98     try
  99     {
 100         {
 101             auto l = load_layer_map(
 102                 this->config.get_string("layers.json").value().c_str());
 103             if (l.is_ok())
 104             {
 105                 this->layers = l.unwrap();
 106             }
 107             else
 108             {
 109                 HMI_ERROR("wm", "%s", l.err().value());
 110             }
 111         }
 112     }
 113     catch (std::exception &e)
 114     {
 115         HMI_ERROR("wm", "Loading of configuration failed: %s", e.what());
 116     }
 117 }
 118
 119 int App::init()
 120 {
 121     if (!this->display->ok())
 122     {
 123         return -1;
 124     }
 125
 126     if (this->layers.mapping.empty())
 127     {
 128         HMI_ERROR("wm", "No surface -> layer mapping loaded");
 129         return -1;
 130     }
 131
 132     // Make afb event
 133     for (int i = Event_Val_Min; i <= Event_Val_Max; i++)
 134     {
 135         map_afb_event[kListEventName[i]] = afb_daemon_make_event(kListEventName[i]);
 136     }
 137
 138     this->display->add_global_handler(
 139         "wl_output", [this](wl_registry *r, uint32_t name, uint32_t v) {
 140             this->outputs.emplace_back(std::make_unique<wl::output>(r, name, v));
 141         });
 142
 143     this->display->add_global_handler(
 144         "ivi_wm", [this](wl_registry *r, uint32_t name, uint32_t v) {
 145             this->controller =
 146                 std::make_unique<struct compositor::controller>(r, name, v);
 147
 148             // Init controller hooks
 149             this->controller->chooks = &this->chooks;
 150
 151             // This protocol needs the output, so lets just add our mapping here...
 152             this->controller->add_proxy_to_id_mapping(
 153                 this->outputs.back()->proxy.get(),
 154                 wl_proxy_get_id(reinterpret_cast<struct wl_proxy *>(
 155                     this->outputs.back()->proxy.get())));
 156
 157             // Create screen
 158             this->controller->create_screen(this->outputs.back()->proxy.get());
 159
 160             // Set display to controller
 161             this->controller->display = this->display;
 162         });
 163
 164     // First level objects
 165     this->display->roundtrip();
 166     // Second level objects
 167     this->display->roundtrip();
 168     // Third level objects
 169     this->display->roundtrip();
 170
 171     return init_layers();
 172 }
 173
 174 int App::dispatch_pending_events()
 175 {
 176     if (this->pop_pending_events())
 177     {
 178         this->display->dispatch_pending();
 179         return 0;
 180     }
 181     return -1;
 182 }
 183
 184 bool App::pop_pending_events()
 185 {
 186     bool x{true};
 187     return this->pending_events.compare_exchange_strong(
 188         x, false, std::memory_order_consume);
 189 }
 190
 191 void App::set_pending_events()
 192 {
 193     this->pending_events.store(true, std::memory_order_release);
 194 }
 195
 196 optional<int> App::lookup_id(char const *name)
 197 {
 198     return this->id_alloc.lookup(std::string(name));
 199 }
 200 optional<std::string> App::lookup_name(int id)
 201 {
 202     return this->id_alloc.lookup(id);
 203 }
 204
 205 /**
 206  * init_layers()
 207  */
 208 int App::init_layers()
 209 {
 210     if (!this->controller)
 211     {
 212         HMI_ERROR("wm", "ivi_controller global not available");
 213         return -1;
 214     }
 215
 216     if (this->outputs.empty())
 217     {
 218         HMI_ERROR("wm", "no output was set up!");
 219         return -1;
 220     }
 221
 222     auto &c = this->controller;
 223
 224     auto &o = this->outputs.front();
 225     auto &s = c->screens.begin()->second;
 226     auto &layers = c->layers;
 227
 228     // Write output dimensions to ivi controller...
 229     c->output_size = compositor::size{uint32_t(o->width), uint32_t(o->height)};
 230     c->physical_size = compositor::size{uint32_t(o->physical_width),
 231                                         uint32_t(o->physical_height)};
 232
 233     // Clear scene
 234     layers.clear();
 235
 236     // Clear screen
 237     s->clear();
 238
 239     // Quick and dirty setup of layers
 240     for (auto const &i : this->layers.mapping)
 241     {
 242         c->layer_create(i.second.layer_id, o->width, o->height);
 243         auto &l = layers[i.second.layer_id];
 244         l->set_destination_rectangle(0, 0, o->width, o->height);
 245         l->set_visibility(1);
 246         HMI_DEBUG("wm", "Setting up layer %s (%d) for surface role match \"%s\"",
 247                   i.second.name.c_str(), i.second.layer_id, i.second.role.c_str());
 248     }
 249
 250     // Add layers to screen
 251     s->set_render_order(this->layers.layers);
 252
 253     this->layout_commit();
 254
 255     return 0;
 256 }
 257
 258 void App::surface_set_layout(int surface_id, optional<int> sub_surface_id)
 259 {
 260     if (!this->controller->surface_exists(surface_id))
 261     {
 262         HMI_ERROR("wm", "Surface %d does not exist", surface_id);
 263         return;
 264     }
 265
 266     auto o_layer_id = this->layers.get_layer_id(surface_id);
 267
 268     if (!o_layer_id)
 269     {
 270         HMI_ERROR("wm", "Surface %d is not associated with any layer!", surface_id);
 271         return;
 272     }
 273
 274     uint32_t layer_id = *o_layer_id;
 275
 276     auto const &layer = this->layers.get_layer(layer_id);
 277     auto rect = layer.value().rect;
 278     auto &s = this->controller->surfaces[surface_id];
 279
 280     int x = rect.x;
 281     int y = rect.y;
 282     int w = rect.w;
 283     int h = rect.h;
 284
 285     // less-than-0 values refer to MAX + 1 - $VALUE
 286     // e.g. MAX is either screen width or height
 287     if (w < 0)
 288     {
 289         w = this->controller->output_size.w + 1 + w;
 290     }
 291     if (h < 0)
 292     {
 293         h = this->controller->output_size.h + 1 + h;
 294     }
 295
 296     if (sub_surface_id)
 297     {
 298         if (o_layer_id != this->layers.get_layer_id(*sub_surface_id))
 299         {
 300             HMI_ERROR("wm",
 301                       "surface_set_layout: layers of surfaces (%d and %d) don't match!",
 302                       surface_id, *sub_surface_id);
 303             return;
 304         }
 305
 306         int x_off = 0;
 307         int y_off = 0;
 308
 309         // split along major axis
 310         if (w > h)
 311         {
 312             w /= 2;
 313             x_off = w;
 314         }
 315         else
 316         {
 317             h /= 2;
 318             y_off = h;
 319         }
 320
 321         auto &ss = this->controller->surfaces[*sub_surface_id];
 322
 323         HMI_DEBUG("wm", "surface_set_layout for sub surface %u on layer %u",
 324                   *sub_surface_id, layer_id);
 325
 326         // set destination to the display rectangle
 327         ss->set_destination_rectangle(x + x_off, y + y_off, w, h);
 328
 329         this->area_info[*sub_surface_id].x = x;
 330         this->area_info[*sub_surface_id].y = y;
 331         this->area_info[*sub_surface_id].w = w;
 332         this->area_info[*sub_surface_id].h = h;
 333     }
 334
 335     HMI_DEBUG("wm", "surface_set_layout for surface %u on layer %u", surface_id,
 336               layer_id);
 337
 338     // set destination to the display rectangle
 339     s->set_destination_rectangle(x, y, w, h);
 340
 341     // update area information
 342     this->area_info[surface_id].x = x;
 343     this->area_info[surface_id].y = y;
 344     this->area_info[surface_id].w = w;
 345     this->area_info[surface_id].h = h;
 346
 347     HMI_DEBUG("wm", "Surface %u now on layer %u with rect { %d, %d, %d, %d }",
 348               surface_id, layer_id, x, y, w, h);
 349 }
 350
 351 void App::layout_commit()
 352 {
 353     this->controller->commit_changes();
 354     this->display->flush();
 355 }
 356
 357 void App::api_activate_surface(char const *drawing_name, char const *drawing_area, const reply_func &reply)
 358 {
 359     ST();
 360
 361     auto const &surface_id = this->lookup_id(drawing_name);
 362
 363     if (!surface_id)
 364     {
 365         reply("Surface does not exist");
 366         return;
 367     }
 368
 369     if (!this->controller->surface_exists(*surface_id))
 370     {
 371         reply("Surface does not exist in controller!");
 372         return;
 373     }
 374
 375     auto layer_id = this->layers.get_layer_id(*surface_id);
 376
 377     if (!layer_id)
 378     {
 379         reply("Surface is not on any layer!");
 380         return;
 381     }
 382
 383     auto o_state = *this->layers.get_layout_state(*surface_id);
 384
 385     if (o_state == nullptr)
 386     {
 387         reply("Could not find layer for surface");
 388         return;
 389     }
 390
 391     HMI_DEBUG("wm", "surface %d is detected", *surface_id);
 392     reply(nullptr);
 393
 394     struct LayoutState &state = *o_state;
 395
 396     // disable layers that are above our current layer
 397     for (auto const &l : this->layers.mapping)
 398     {
 399         if (l.second.layer_id <= *layer_id)
 400         {
 401             continue;
 402         }
 403
 404         bool flush = false;
 405         if (l.second.state.main != -1)
 406         {
 407             this->deactivate(l.second.state.main);
 408             l.second.state.main = -1;
 409             flush = true;
 410         }
 411
 412         if (l.second.state.sub != -1)
 413         {
 414             this->deactivate(l.second.state.sub);
 415             l.second.state.sub = -1;
 416             flush = true;
 417         }
 418
 419         if (flush)
 420         {
 421             this->layout_commit();
 422         }
 423     }
 424
 425     auto layer = this->layers.get_layer(*layer_id);
 426
 427     if (state.main == -1)
 428     {
 429         this->try_layout(
 430             state, LayoutState{*surface_id}, [&](LayoutState const &nl) {
 431                 HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 432                 this->surface_set_layout(*surface_id);
 433                 state = nl;
 434
 435                 // Commit for configuraton
 436                 this->layout_commit();
 437
 438                 std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 439                 compositor::rect area_rect = this->area_info[*surface_id];
 440                 this->emit_syncdraw(drawing_name, str_area.c_str(),
 441                                     area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 442                 this->enqueue_flushdraw(state.main);
 443             });
 444     }
 445     else
 446     {
 447         if (0 == strcmp(drawing_name, "HomeScreen"))
 448         {
 449             this->try_layout(
 450                 state, LayoutState{*surface_id}, [&](LayoutState const &nl) {
 451                     HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 452                     std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 453                     compositor::rect area_rect = this->area_info[*surface_id];
 454                     this->emit_syncdraw(drawing_name, str_area.c_str(),
 455                                         area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 456                     this->enqueue_flushdraw(state.main);
 457                 });
 458         }
 459         else
 460         {
 461             bool can_split = this->can_split(state, *surface_id);
 462
 463             if (can_split)
 464             {
 465                 this->try_layout(
 466                     state,
 467                     LayoutState{state.main, *surface_id},
 468                     [&](LayoutState const &nl) {
 469                         HMI_DEBUG("wm", "Layout: %s", kNameLayoutSplit);
 470                         std::string main =
 471                             std::move(*this->lookup_name(state.main));
 472
 473                         this->surface_set_layout(state.main, surface_id);
 474                         if (state.sub != *surface_id)
 475                         {
 476                             if (state.sub != -1)
 477                             {
 478                                 this->deactivate(state.sub);
 479                             }
 480                         }
 481                         state = nl;
 482
 483                         // Commit for configuration and visibility(0)
 484                         this->layout_commit();
 485
 486                         std::string str_area_main = std::string(kNameLayoutSplit) + "." + std::string(kNameAreaMain);
 487                         std::string str_area_sub = std::string(kNameLayoutSplit) + "." + std::string(kNameAreaSub);
 488                         compositor::rect area_rect_main = this->area_info[state.main];
 489                         compositor::rect area_rect_sub = this->area_info[*surface_id];
 490                         this->emit_syncdraw(main.c_str(), str_area_main.c_str(),
 491                                             area_rect_main.x, area_rect_main.y,
 492                                             area_rect_main.w, area_rect_main.h);
 493                         this->emit_syncdraw(drawing_name, str_area_sub.c_str(),
 494                                             area_rect_sub.x, area_rect_sub.y,
 495                                             area_rect_sub.w, area_rect_sub.h);
 496                         this->enqueue_flushdraw(state.main);
 497                         this->enqueue_flushdraw(state.sub);
 498                     });
 499             }
 500             else
 501             {
 502                 this->try_layout(
 503                     state, LayoutState{*surface_id}, [&](LayoutState const &nl) {
 504                         HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 505
 506                         this->surface_set_layout(*surface_id);
 507                         if (state.main != *surface_id)
 508                         {
 509                             this->deactivate(state.main);
 510                         }
 511                         if (state.sub != -1)
 512                         {
 513                             if (state.sub != *surface_id)
 514                             {
 515                                 this->deactivate(state.sub);
 516                             }
 517                         }
 518                         state = nl;
 519
 520                         // Commit for configuraton and visibility(0)
 521                         this->layout_commit();
 522
 523                         std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 524                         compositor::rect area_rect = this->area_info[*surface_id];
 525                         this->emit_syncdraw(drawing_name, str_area.c_str(),
 526                                             area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 527                         this->enqueue_flushdraw(state.main);
 528                     });
 529             }
 530         }
 531     }
 532 }
 533
 534 void App::api_deactivate_surface(char const *drawing_name, const reply_func &reply)
 535 {
 536     ST();
 537     auto const &surface_id = this->lookup_id(drawing_name);
 538
 539     if (!surface_id)
 540     {
 541         reply("Surface does not exist");
 542         return;
 543     }
 544
 545     if (*surface_id == this->layers.main_surface)
 546     {
 547         reply("Cannot deactivate main_surface");
 548         return;
 549     }
 550
 551     auto o_state = *this->layers.get_layout_state(*surface_id);
 552
 553     if (o_state == nullptr)
 554     {
 555         reply("Could not find layer for surface");
 556         return;
 557     }
 558
 559     struct LayoutState &state = *o_state;
 560
 561     if (state.main == -1)
 562     {
 563         reply("No surface active");
 564         return;
 565     }
 566
 567     // Check against main_surface, main_surface_name is the configuration item.
 568     if (*surface_id == this->layers.main_surface)
 569     {
 570         HMI_DEBUG("wm", "Refusing to deactivate main_surface %d", *surface_id);
 571         reply(nullptr);
 572         return;
 573     }
 574     if ((state.main == *surface_id) && (state.sub == *surface_id))
 575     {
 576         reply("Surface is not active");
 577         return;
 578     }
 579     reply(nullptr);
 580
 581     if (state.main == *surface_id)
 582     {
 583         if (state.sub != -1)
 584         {
 585             this->try_layout(
 586                 state, LayoutState{state.sub, -1}, [&](LayoutState const &nl) {
 587                     std::string sub = std::move(*this->lookup_name(state.sub));
 588
 589                     this->deactivate(*surface_id);
 590                     this->surface_set_layout(state.sub);
 591                     state = nl;
 592
 593                     this->layout_commit();
 594                     std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 595                     compositor::rect area_rect = this->area_info[state.sub];
 596                     this->emit_syncdraw(sub.c_str(), str_area.c_str(),
 597                                         area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 598                     this->enqueue_flushdraw(state.sub);
 599                 });
 600         }
 601         else
 602         {
 603             this->try_layout(state, LayoutState{-1, -1}, [&](LayoutState const &nl) {
 604                 this->deactivate(*surface_id);
 605                 state = nl;
 606                 this->layout_commit();
 607             });
 608         }
 609     }
 610     else if (state.sub == *surface_id)
 611     {
 612         this->try_layout(
 613             state, LayoutState{state.main, -1}, [&](LayoutState const &nl) {
 614                 std::string main = std::move(*this->lookup_name(state.main));
 615
 616                 this->deactivate(*surface_id);
 617                 this->surface_set_layout(state.main);
 618                 state = nl;
 619
 620                 this->layout_commit();
 621                 std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 622                 compositor::rect area_rect = this->area_info[state.main];
 623                 this->emit_syncdraw(main.c_str(), str_area.c_str(),
 624                                     area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 625                 this->enqueue_flushdraw(state.main);
 626             });
 627     }
 628 }
 629
 630 void App::enqueue_flushdraw(int surface_id)
 631 {
 632     this->check_flushdraw(surface_id);
 633     HMI_DEBUG("wm", "Enqueuing EndDraw for surface_id %d", surface_id);
 634     this->pending_end_draw.push_back(surface_id);
 635 }
 636
 637 void App::check_flushdraw(int surface_id)
 638 {
 639     auto i = std::find(std::begin(this->pending_end_draw),
 640                        std::end(this->pending_end_draw), surface_id);
 641     if (i != std::end(this->pending_end_draw))
 642     {
 643         auto n = this->lookup_name(surface_id);
 644         HMI_ERROR("wm", "Application %s (%d) has pending EndDraw call(s)!",
 645                   n ? n->c_str() : "unknown-name", surface_id);
 646         std::swap(this->pending_end_draw[std::distance(
 647                       std::begin(this->pending_end_draw), i)],
 648                   this->pending_end_draw.back());
 649         this->pending_end_draw.resize(this->pending_end_draw.size() - 1);
 650     }
 651 }
 652
 653 void App::api_enddraw(char const *drawing_name)
 654 {
 655     for (unsigned i = 0, iend = this->pending_end_draw.size(); i < iend; i++)
 656     {
 657         auto n = this->lookup_name(this->pending_end_draw[i]);
 658         if (n && *n == drawing_name)
 659         {
 660             std::swap(this->pending_end_draw[i], this->pending_end_draw[iend - 1]);
 661             this->pending_end_draw.resize(iend - 1);
 662             this->activate(this->pending_end_draw[i]);
 663             this->emit_flushdraw(drawing_name);
 664         }
 665     }
 666 }
 667
 668 void App::api_ping() { this->dispatch_pending_events(); }
 669
 670 void App::send_event(char const *evname, char const *label)
 671 {
 672     HMI_DEBUG("wm", "%s: %s(%s)", __func__, evname, label);
 673
 674     json_object *j = json_object_new_object();
 675     json_object_object_add(j, kKeyDrawingName, json_object_new_string(label));
 676
 677     int ret = afb_event_push(this->map_afb_event[evname], j);
 678     if (ret != 0)
 679     {
 680         HMI_DEBUG("wm", "afb_event_push failed: %m");
 681     }
 682 }
 683
 684 void App::send_event(char const *evname, char const *label, char const *area,
 685                      int x, int y, int w, int h)
 686 {
 687     HMI_DEBUG("wm", "%s: %s(%s, %s) x:%d y:%d w:%d h:%d",
 688               __func__, evname, label, area, x, y, w, h);
 689
 690     json_object *j_rect = json_object_new_object();
 691     json_object_object_add(j_rect, kKeyX, json_object_new_int(x));
 692     json_object_object_add(j_rect, kKeyY, json_object_new_int(y));
 693     json_object_object_add(j_rect, kKeyWidth, json_object_new_int(w));
 694     json_object_object_add(j_rect, kKeyHeight, json_object_new_int(h));
 695
 696     json_object *j = json_object_new_object();
 697     json_object_object_add(j, kKeyDrawingName, json_object_new_string(label));
 698     json_object_object_add(j, kKeyDrawingArea, json_object_new_string(area));
 699     json_object_object_add(j, kKeyDrawingRect, j_rect);
 700
 701     int ret = afb_event_push(this->map_afb_event[evname], j);
 702     if (ret != 0)
 703     {
 704         HMI_DEBUG("wm", "afb_event_push failed: %m");
 705     }
 706 }
 707
 708 /**
 709  * proxied events
 710  */
 711 void App::surface_created(uint32_t surface_id)
 712 {
 713     auto layer_id = this->layers.get_layer_id(surface_id);
 714     if (!layer_id)
 715     {
 716         HMI_DEBUG("wm", "Newly created surfce %d is not associated with any layer!",
 717                   surface_id);
 718         return;
 719     }
 720
 721     HMI_DEBUG("wm", "surface_id is %u, layer_id is %u", surface_id, *layer_id);
 722
 723     this->controller->layers[*layer_id]->add_surface(surface_id);
 724     this->layout_commit();
 725     // activate the main_surface right away
 726     /*if (surface_id == static_cast<unsigned>(this->layers.main_surface)) {
 727       HMI_DEBUG("wm", "Activating main_surface (%d)", surface_id);
 728
 729       this->api_activate_surface(
 730          this->lookup_name(surface_id).value_or("unknown-name").c_str());
 731    }*/
 732 }
 733
 734 void App::surface_removed(uint32_t surface_id)
 735 {
 736     HMI_DEBUG("wm", "surface_id is %u", surface_id);
 737
 738     // We cannot normally deactivate the main_surface, so be explicit
 739     // about it:
 740     if (int(surface_id) == this->layers.main_surface)
 741     {
 742         this->deactivate_main_surface();
 743     }
 744     else
 745     {
 746         auto drawing_name = this->lookup_name(surface_id);
 747         if (drawing_name)
 748         {
 749             this->api_deactivate_surface(drawing_name->c_str(), [](const char *) {});
 750         }
 751     }
 752
 753     this->id_alloc.remove_id(surface_id);
 754     this->layers.remove_surface(surface_id);
 755 }
 756
 757 void App::emit_activated(char const *label)
 758 {
 759     this->send_event(kListEventName[Event_Active], label);
 760 }
 761
 762 void App::emit_deactivated(char const *label)
 763 {
 764     this->send_event(kListEventName[Event_Inactive], label);
 765 }
 766
 767 void App::emit_syncdraw(char const *label, char const *area, int x, int y, int w, int h)
 768 {
 769     this->send_event(kListEventName[Event_SyncDraw], label, area, x, y, w, h);
 770 }
 771
 772 void App::emit_flushdraw(char const *label)
 773 {
 774     this->send_event(kListEventName[Event_FlushDraw], label);
 775 }
 776
 777 void App::emit_visible(char const *label, bool is_visible)
 778 {
 779     this->send_event(is_visible ? kListEventName[Event_Visible] : kListEventName[Event_Invisible], label);
 780 }
 781
 782 void App::emit_invisible(char const *label)
 783 {
 784     return emit_visible(label, false);
 785 }
 786
 787 void App::emit_visible(char const *label) { return emit_visible(label, true); }
 788
 789 result<int> App::api_request_surface(char const *drawing_name)
 790 {
 791     auto lid = this->layers.get_layer_id(std::string(drawing_name));
 792     if (!lid)
 793     {
 794         /**
 795        * register drawing_name as fallback and make it displayed.
 796        */
 797         lid = this->layers.get_layer_id(std::string("Fallback"));
 798         HMI_DEBUG("wm", "%s is not registered in layers.json, then fallback as normal app", drawing_name);
 799         if (!lid)
 800         {
 801             return Err<int>("Drawing name does not match any role, Fallback is disabled");
 802         }
 803     }
 804
 805     auto rname = this->lookup_id(drawing_name);
 806     if (!rname)
 807     {
 808         // name does not exist yet, allocate surface id...
 809         auto id = int(this->id_alloc.generate_id(drawing_name));
 810         this->layers.add_surface(id, *lid);
 811
 812         // set the main_surface[_name] here and now
 813         if (!this->layers.main_surface_name.empty() &&
 814             this->layers.main_surface_name == drawing_name)
 815         {
 816             this->layers.main_surface = id;
 817             HMI_DEBUG("wm", "Set main_surface id to %u", id);
 818         }
 819
 820         return Ok<int>(id);
 821     }
 822
 823     // Check currently registered drawing names if it is already there.
 824     return Err<int>("Surface already present");
 825 }
 826
 827 char const *App::api_request_surface(char const *drawing_name,
 828                                      char const *ivi_id)
 829 {
 830     ST();
 831
 832     auto lid = this->layers.get_layer_id(std::string(drawing_name));
 833     unsigned sid = std::stol(ivi_id);
 834
 835     if (!lid)
 836     {
 837         /**
 838        * register drawing_name as fallback and make it displayed.
 839        */
 840         lid = this->layers.get_layer_id(std::string("Fallback"));
 841         HMI_DEBUG("wm", "%s is not registered in layers.json, then fallback as normal app", drawing_name);
 842         if (!lid)
 843         {
 844             return "Drawing name does not match any role, Fallback is disabled";
 845         }
 846     }
 847
 848     auto rname = this->lookup_id(drawing_name);
 849
 850     if (rname)
 851     {
 852         return "Surface already present";
 853     }
 854
 855     // register pair drawing_name and ivi_id
 856     this->id_alloc.register_name_id(drawing_name, sid);
 857     this->layers.add_surface(sid, *lid);
 858
 859     // this surface is already created
 860     HMI_DEBUG("wm", "surface_id is %u, layer_id is %u", sid, *lid);
 861
 862     this->controller->layers[*lid]->add_surface(sid);
 863     this->layout_commit();
 864
 865     return nullptr;
 866 }
 867
 868 result<json_object *> App::api_get_display_info()
 869 {
 870     // Check controller
 871     if (!this->controller)
 872     {
 873         return Err<json_object *>("ivi_controller global not available");
 874     }
 875
 876     // Set display info
 877     compositor::size o_size = this->controller->output_size;
 878     compositor::size p_size = this->controller->physical_size;
 879
 880     json_object *object = json_object_new_object();
 881     json_object_object_add(object, kKeyWidthPixel, json_object_new_int(o_size.w));
 882     json_object_object_add(object, kKeyHeightPixel, json_object_new_int(o_size.h));
 883     json_object_object_add(object, kKeyWidthMm, json_object_new_int(p_size.w));
 884     json_object_object_add(object, kKeyHeightMm, json_object_new_int(p_size.h));
 885
 886     return Ok<json_object *>(object);
 887 }
 888
 889 result<json_object *> App::api_get_area_info(char const *drawing_name)
 890 {
 891     HMI_DEBUG("wm", "called");
 892
 893     // Check drawing name, surface/layer id
 894     auto const &surface_id = this->lookup_id(drawing_name);
 895     if (!surface_id)
 896     {
 897         return Err<json_object *>("Surface does not exist");
 898     }
 899
 900     if (!this->controller->surface_exists(*surface_id))
 901     {
 902         return Err<json_object *>("Surface does not exist in controller!");
 903     }
 904
 905     auto layer_id = this->layers.get_layer_id(*surface_id);
 906     if (!layer_id)
 907     {
 908         return Err<json_object *>("Surface is not on any layer!");
 909     }
 910
 911     auto o_state = *this->layers.get_layout_state(*surface_id);
 912     if (o_state == nullptr)
 913     {
 914         return Err<json_object *>("Could not find layer for surface");
 915     }
 916
 917     struct LayoutState &state = *o_state;
 918     if ((state.main != *surface_id) && (state.sub != *surface_id))
 919     {
 920         return Err<json_object *>("Surface is inactive");
 921     }
 922
 923     // Set area rectangle
 924     compositor::rect area_info = this->area_info[*surface_id];
 925     json_object *object = json_object_new_object();
 926     json_object_object_add(object, kKeyX, json_object_new_int(area_info.x));
 927     json_object_object_add(object, kKeyY, json_object_new_int(area_info.y));
 928     json_object_object_add(object, kKeyWidth, json_object_new_int(area_info.w));
 929     json_object_object_add(object, kKeyHeight, json_object_new_int(area_info.h));
 930
 931     return Ok<json_object *>(object);
 932 }
 933
 934 void App::activate(int id)
 935 {
 936     auto ip = this->controller->sprops.find(id);
 937     if (ip != this->controller->sprops.end())
 938     {
 939         this->controller->surfaces[id]->set_visibility(1);
 940         char const *label =
 941             this->lookup_name(id).value_or("unknown-name").c_str();
 942
 943         // FOR CES DEMO >>>
 944         if ((0 == strcmp(label, "Radio")) || (0 == strcmp(label, "MediaPlayer")) || (0 == strcmp(label, "Music")) || (0 == strcmp(label, "Navigation")))
 945         {
 946             for (auto i = surface_bg.begin(); i != surface_bg.end(); ++i)
 947             {
 948                 if (id == *i)
 949                 {
 950                     // Remove id
 951                     this->surface_bg.erase(i);
 952
 953                     // Remove from BG layer (999)
 954                     HMI_DEBUG("wm", "Remove %s(%d) from BG layer", label, id);
 955                     this->controller->layers[999]->remove_surface(id);
 956
 957                     // Add to FG layer (1001)
 958                     HMI_DEBUG("wm", "Add %s(%d) to FG layer", label, id);
 959                     this->controller->layers[1001]->add_surface(id);
 960
 961                     for (int j : this->surface_bg)
 962                     {
 963                         HMI_DEBUG("wm", "Stored id:%d", j);
 964                     }
 965                     break;
 966                 }
 967             }
 968         }
 969         // <<< FOR CES DEMO
 970         this->layout_commit();
 971
 972         this->emit_visible(label);
 973         this->emit_activated(label);
 974     }
 975 }
 976
 977 void App::deactivate(int id)
 978 {
 979     auto ip = this->controller->sprops.find(id);
 980     if (ip != this->controller->sprops.end())
 981     {
 982         char const *label =
 983             this->lookup_name(id).value_or("unknown-name").c_str();
 984
 985         // FOR CES DEMO >>>
 986         if ((0 == strcmp(label, "Radio"))       ||
 987             (0 == strcmp(label, "MediaPlayer")) ||
 988             (0 == strcmp(label, "Music"))       ||
 989             (0 == strcmp(label, "Navigation")))
 990         {
 991
 992             // Store id
 993             this->surface_bg.push_back(id);
 994
 995             // Remove from FG layer (1001)
 996             HMI_DEBUG("wm", "Remove %s(%d) from FG layer", label, id);
 997             this->controller->layers[1001]->remove_surface(id);
 998
 999             // Add to BG layer (999)
1000             HMI_DEBUG("wm", "Add %s(%d) to BG layer", label, id);
1001             this->controller->layers[999]->add_surface(id);
1002
1003             for (int j : surface_bg)
1004             {
1005                 HMI_DEBUG("wm", "Stored id:%d", j);
1006             }
1007         }
1008         else
1009         {
1010             this->controller->surfaces[id]->set_visibility(0);
1011         }
1012         // <<< FOR CES DEMO
1013
1014         this->emit_deactivated(label);
1015         this->emit_invisible(label);
1016     }
1017 }
1018
1019 void App::deactivate_main_surface()
1020 {
1021     this->layers.main_surface = -1;
1022     this->api_deactivate_surface(this->layers.main_surface_name.c_str(), [](const char *) {});
1023 }
1024
1025 bool App::can_split(struct LayoutState const &state, int new_id)
1026 {
1027     if (state.main != -1 && state.main != new_id)
1028     {
1029         auto new_id_layer = this->layers.get_layer_id(new_id).value();
1030         auto current_id_layer = this->layers.get_layer_id(state.main).value();
1031
1032         // surfaces are on separate layers, don't bother.
1033         if (new_id_layer != current_id_layer)
1034         {
1035             return false;
1036         }
1037
1038         std::string const &new_id_str = this->lookup_name(new_id).value();
1039         std::string const &cur_id_str = this->lookup_name(state.main).value();
1040
1041         auto const &layer = this->layers.get_layer(new_id_layer);
1042
1043         HMI_DEBUG("wm", "layer info name: %s", layer->name.c_str());
1044
1045         if (layer->layouts.empty())
1046         {
1047             return false;
1048         }
1049
1050         for (auto i = layer->layouts.cbegin(); i != layer->layouts.cend(); i++)
1051         {
1052             HMI_DEBUG("wm", "%d main_match '%s'", new_id_layer, i->main_match.c_str());
1053             auto rem = std::regex(i->main_match);
1054             if (std::regex_match(cur_id_str, rem))
1055             {
1056                 // build the second one only if the first already matched
1057                 HMI_DEBUG("wm", "%d sub_match '%s'", new_id_layer, i->sub_match.c_str());
1058                 auto res = std::regex(i->sub_match);
1059                 if (std::regex_match(new_id_str, res))
1060                 {
1061                     HMI_DEBUG("wm", "layout matched!");
1062                     return true;
1063                 }
1064             }
1065         }
1066     }
1067
1068     return false;
1069 }
1070
1071 void App::try_layout(struct LayoutState & /*state*/,
1072                      struct LayoutState const &new_layout,
1073                      std::function<void(LayoutState const &nl)> apply)
1074 {
1075     if (this->policy.layout_is_valid(new_layout))
1076     {
1077         apply(new_layout);
1078     }
1079 }
1080
1081 /**
1082  * controller_hooks
1083  */
1084 void controller_hooks::surface_created(uint32_t surface_id)
1085 {
1086     this->app->surface_created(surface_id);
1087 }
1088
1089 void controller_hooks::surface_removed(uint32_t surface_id)
1090 {
1091     this->app->surface_removed(surface_id);
1092 }
1093
1094 void controller_hooks::surface_visibility(uint32_t /*surface_id*/,
1095                                           uint32_t /*v*/) {}
1096
1097 void controller_hooks::surface_destination_rectangle(uint32_t /*surface_id*/,
1098                                                      uint32_t /*x*/,
1099                                                      uint32_t /*y*/,
1100                                                      uint32_t /*w*/,
1101                                                      uint32_t /*h*/) {}
1102
1103 } // namespace wm