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 "app.hpp"
  18 #include "json_helper.hpp"
  19 #include "layers.hpp"
  20 #include "layout.hpp"
  21 #include "util.hpp"
  22 #include "wayland.hpp"
  23
  24 #include <cstdio>
  25 #include <memory>
  26
  27 #include <cassert>
  28
  29 #include <json-c/json.h>
  30
  31 #include <algorithm>
  32 #include <csignal>
  33 #include <fstream>
  34 #include <json.hpp>
  35 #include <regex>
  36 #include <thread>
  37
  38
  39 namespace wm {
  40
  41 namespace {
  42
  43 using nlohmann::json;
  44
  45 result<json> file_to_json(char const *filename) {
  46    json j;
  47    std::ifstream i(filename);
  48    if (i.fail()) {
  49       HMI_DEBUG("wm", "Could not open config file, so use default layer information");
  50       j = default_layers_json;
  51    }
  52    else {
  53       i >> j;
  54    }
  55
  56    return Ok(j);
  57 }
  58
  59 struct result<layer_map> load_layer_map(char const *filename) {
  60    HMI_DEBUG("wm", "loading IDs from %s", filename);
  61
  62    auto j = file_to_json(filename);
  63    if (j.is_err()) {
  64       return Err<layer_map>(j.unwrap_err());
  65    }
  66    json jids = j.unwrap();
  67
  68    return to_layer_map(jids);
  69 }
  70
  71 }  // namespace
  72
  73
  74 /**
  75  * App Impl
  76  */
  77 App::App(wl::display *d)
  78    : chooks{this},
  79      display{d},
  80      controller{},
  81      outputs(),
  82      config(),
  83      layers(),
  84      id_alloc{},
  85      pending_events(false),
  86      policy{} {
  87    try {
  88       {
  89          auto l = load_layer_map(
  90             this->config.get_string("layers.json").value().c_str());
  91          if (l.is_ok()) {
  92             this->layers = l.unwrap();
  93          } else {
  94             HMI_ERROR("wm", "%s", l.err().value());
  95          }
  96       }
  97    } catch (std::exception &e) {
  98       HMI_ERROR("wm", "Loading of configuration failed: %s", e.what());
  99    }
 100 }
 101
 102 int App::init() {
 103    if (!this->display->ok()) {
 104       return -1;
 105    }
 106
 107    if (this->layers.mapping.empty()) {
 108       HMI_ERROR("wm", "No surface -> layer mapping loaded");
 109       return -1;
 110    }
 111
 112    // Make afb event
 113    for (int i=Event_Val_Min; i<=Event_Val_Max; i++) {
 114       map_afb_event[kListEventName[i]] = afb_daemon_make_event(kListEventName[i]);
 115    }
 116
 117    this->display->add_global_handler(
 118       "wl_output", [this](wl_registry *r, uint32_t name, uint32_t v) {
 119          this->outputs.emplace_back(std::make_unique<wl::output>(r, name, v));
 120       });
 121
 122    this->display->add_global_handler(
 123       "ivi_controller", [this](wl_registry *r, uint32_t name, uint32_t v) {
 124          this->controller =
 125             std::make_unique<struct compositor::controller>(r, name, v);
 126
 127          // Init controller hooks
 128          this->controller->chooks = &this->chooks;
 129
 130          // This protocol needs the output, so lets just add our mapping here...
 131          this->controller->add_proxy_to_id_mapping(
 132             this->outputs.back()->proxy.get(),
 133             wl_proxy_get_id(reinterpret_cast<struct wl_proxy *>(
 134                this->outputs.back()->proxy.get())));
 135       });
 136
 137    // First level objects
 138    this->display->roundtrip();
 139    // Second level objects
 140    this->display->roundtrip();
 141    // Third level objects
 142    this->display->roundtrip();
 143
 144    return init_layers();
 145 }
 146
 147 int App::dispatch_events() {
 148    if (this->dispatch_events() == 0) {
 149       return 0;
 150    }
 151
 152    int ret = this->display->dispatch();
 153    if (ret == -1) {
 154       HMI_ERROR("wm", "wl_display_dipatch() returned error %d",
 155                this->display->get_error());
 156       return -1;
 157    }
 158    this->display->flush();
 159
 160    return 0;
 161 }
 162
 163 int App::dispatch_pending_events() {
 164    if (this->pop_pending_events()) {
 165       this->display->dispatch_pending();
 166       return 0;
 167    }
 168    return -1;
 169 }
 170
 171 bool App::pop_pending_events() {
 172    bool x{true};
 173    return this->pending_events.compare_exchange_strong(
 174       x, false, std::memory_order_consume);
 175 }
 176
 177 void App::set_pending_events() {
 178    this->pending_events.store(true, std::memory_order_release);
 179 }
 180
 181 optional<int> App::lookup_id(char const *name) {
 182    return this->id_alloc.lookup(std::string(name));
 183 }
 184 optional<std::string> App::lookup_name(int id) {
 185    return this->id_alloc.lookup(id);
 186 }
 187
 188 /**
 189  * init_layers()
 190  */
 191 int App::init_layers() {
 192    if (!this->controller) {
 193       HMI_ERROR("wm", "ivi_controller global not available");
 194       return -1;
 195    }
 196
 197    if (this->outputs.empty()) {
 198       HMI_ERROR("wm", "no output was set up!");
 199       return -1;
 200    }
 201
 202    auto &c = this->controller;
 203
 204    auto &o = this->outputs.front();
 205    auto &s = c->screens.begin()->second;
 206    auto &layers = c->layers;
 207
 208    // Write output dimensions to ivi controller...
 209    c->output_size = compositor::size{uint32_t(o->width), uint32_t(o->height)};
 210
 211    // Clear scene
 212    layers.clear();
 213
 214    // Clear screen
 215    s->clear();
 216
 217    // Quick and dirty setup of layers
 218    for (auto const &i : this->layers.mapping) {
 219       c->layer_create(i.second.layer_id, o->width, o->height);
 220       auto &l = layers[i.second.layer_id];
 221       l->set_destination_rectangle(0, 0, o->width, o->height);
 222       l->set_visibility(1);
 223       HMI_DEBUG("wm", "Setting up layer %s (%d) for surface role match \"%s\"",
 224                i.second.name.c_str(), i.second.layer_id, i.second.role.c_str());
 225    }
 226
 227    // Add layers to screen
 228    s->set_render_order(this->layers.layers);
 229
 230    this->layout_commit();
 231
 232    return 0;
 233 }
 234
 235 void App::surface_set_layout(int surface_id, optional<int> sub_surface_id) {
 236    if (!this->controller->surface_exists(surface_id)) {
 237       HMI_ERROR("wm", "Surface %d does not exist", surface_id);
 238       return;
 239    }
 240
 241    auto o_layer_id = this->layers.get_layer_id(surface_id);
 242
 243    if (!o_layer_id) {
 244       HMI_ERROR("wm", "Surface %d is not associated with any layer!", surface_id);
 245       return;
 246    }
 247
 248    uint32_t layer_id = *o_layer_id;
 249
 250    auto const &layer = this->layers.get_layer(layer_id);
 251    auto rect = layer.value().rect;
 252    auto &s = this->controller->surfaces[surface_id];
 253
 254    int x = rect.x;
 255    int y = rect.y;
 256    int w = rect.w;
 257    int h = rect.h;
 258
 259    // less-than-0 values refer to MAX + 1 - $VALUE
 260    // e.g. MAX is either screen width or height
 261    if (w < 0) {
 262       w = this->controller->output_size.w + 1 + w;
 263    }
 264    if (h < 0) {
 265       h = this->controller->output_size.h + 1 + h;
 266    }
 267
 268    if (sub_surface_id) {
 269       if (o_layer_id != this->layers.get_layer_id(*sub_surface_id)) {
 270          HMI_ERROR("wm",
 271             "surface_set_layout: layers of surfaces (%d and %d) don't match!",
 272             surface_id, *sub_surface_id);
 273          return;
 274       }
 275
 276       int x_off = 0;
 277       int y_off = 0;
 278
 279       // split along major axis
 280       if (w > h) {
 281          w /= 2;
 282          x_off = w;
 283       } else {
 284          h /= 2;
 285          y_off = h;
 286       }
 287
 288       auto &ss = this->controller->surfaces[*sub_surface_id];
 289
 290       HMI_DEBUG("wm", "surface_set_layout for sub surface %u on layer %u",
 291                *sub_surface_id, layer_id);
 292
 293       // configure surface to wxh dimensions
 294       ss->set_configuration(w, h);
 295       // set source reactangle, even if we should not need to set it.
 296       ss->set_source_rectangle(0, 0, w, h);
 297       // set destination to the display rectangle
 298       ss->set_destination_rectangle(x + x_off, y + y_off, w, h);
 299
 300    }
 301
 302    HMI_DEBUG("wm", "surface_set_layout for surface %u on layer %u", surface_id,
 303             layer_id);
 304
 305    // configure surface to wxh dimensions
 306    s->set_configuration(w, h);
 307    // set source reactangle, even if we should not need to set it.
 308    s->set_source_rectangle(0, 0, w, h);
 309
 310    // set destination to the display rectangle
 311    s->set_destination_rectangle(x, y, w, h);
 312
 313    HMI_DEBUG("wm", "Surface %u now on layer %u with rect { %d, %d, %d, %d }",
 314             surface_id, layer_id, x, y, w, h);
 315 }
 316
 317 void App::layout_commit() {
 318    this->controller->commit_changes();
 319    this->display->flush();
 320 }
 321
 322 char const *App::api_activate_surface(char const *drawing_name, char const *drawing_area) {
 323    ST();
 324
 325    auto const &surface_id = this->lookup_id(drawing_name);
 326
 327    if (!surface_id) {
 328       return "Surface does not exist";
 329    }
 330
 331    if (!this->controller->surface_exists(*surface_id)) {
 332       return "Surface does not exist in controller!";
 333    }
 334
 335    auto layer_id = this->layers.get_layer_id(*surface_id);
 336
 337    if (!layer_id) {
 338       return "Surface is not on any layer!";
 339    }
 340
 341    auto o_state = *this->layers.get_layout_state(*surface_id);
 342
 343    if (o_state == nullptr) {
 344       return "Could not find layer for surface";
 345    }
 346
 347    struct LayoutState &state = *o_state;
 348
 349    // disable layers that are above our current layer
 350    for (auto const &l : this->layers.mapping) {
 351       if (l.second.layer_id <= *layer_id) {
 352          continue;
 353       }
 354
 355       bool flush = false;
 356       if (l.second.state.main != -1) {
 357          this->deactivate(l.second.state.main);
 358          l.second.state.main = -1;
 359          flush = true;
 360       }
 361
 362       if (l.second.state.sub != -1) {
 363          this->deactivate(l.second.state.sub);
 364          l.second.state.sub = -1;
 365          flush = true;
 366       }
 367
 368       if (flush) {
 369          this->layout_commit();
 370       }
 371    }
 372
 373    auto layer = this->layers.get_layer(*layer_id);
 374
 375    if (state.main == -1) {
 376       this->try_layout(
 377          state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
 378             HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 379             this->surface_set_layout(*surface_id);
 380             state = nl;
 381
 382             // Commit for configuraton
 383             this->layout_commit();
 384
 385             if (!(layer->is_normal_layout_only)) {
 386                // Wait for configuration listener
 387                controller->is_configured = false;
 388                while (!(controller->is_configured)) {
 389                   dispatch_pending_events();
 390                }
 391             }
 392
 393             std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 394             this->emit_syncdraw(drawing_name, str_area.c_str());
 395             this->enqueue_flushdraw(state.main);
 396          });
 397    } else {
 398       if (0 == strcmp(drawing_name, "HomeScreen")) {
 399          this->try_layout(
 400             state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
 401                HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 402                std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 403                this->emit_syncdraw(drawing_name, str_area.c_str());
 404                this->enqueue_flushdraw(state.main);
 405             });
 406       } else {
 407          bool can_split = this->can_split(state, *surface_id);
 408
 409          if (can_split) {
 410             this->try_layout(
 411                state,
 412                LayoutState{state.main, *surface_id},
 413                [&] (LayoutState const &nl) {
 414                   HMI_DEBUG("wm", "Layout: %s", kNameLayoutSplit);
 415                   std::string main =
 416                      std::move(*this->lookup_name(state.main));
 417
 418                   this->surface_set_layout(state.main, surface_id);
 419                   if (state.sub != *surface_id) {
 420                       if (state.sub != -1) {
 421                          this->deactivate(state.sub);
 422                       }
 423                   }
 424                   state = nl;
 425
 426                   // Commit for configuraton and visibility(0)
 427                   this->layout_commit();
 428
 429                   // Wait for configuration listener
 430                   controller->is_configured = false;
 431                   while (!(controller->is_configured)) {
 432                      dispatch_pending_events();
 433                   }
 434
 435                   std::string str_area_main = std::string(kNameLayoutSplit) + "." + std::string(kNameAreaMain);
 436                   std::string str_area_sub = std::string(kNameLayoutSplit) + "." + std::string(kNameAreaSub);
 437                   this->emit_syncdraw(main.c_str(), str_area_main.c_str());
 438                   this->emit_syncdraw(drawing_name, str_area_sub.c_str());
 439                   this->enqueue_flushdraw(state.main);
 440                   this->enqueue_flushdraw(state.sub);
 441                });
 442          } else {
 443             this->try_layout(
 444                state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
 445                   HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 446
 447                   this->surface_set_layout(*surface_id);
 448                   if (state.main != *surface_id) {
 449                       this->deactivate(state.main);
 450                   }
 451                   if (state.sub != -1) {
 452                       if (state.sub != *surface_id) {
 453                          this->deactivate(state.sub);
 454                       }
 455                   }
 456                   state = nl;
 457
 458                   // Commit for configuraton and visibility(0)
 459                   this->layout_commit();
 460
 461                   if (!(layer->is_normal_layout_only)) {
 462                      // Wait for configuration listener
 463                      controller->is_configured = false;
 464                      while (!(controller->is_configured)) {
 465                         dispatch_pending_events();
 466                      }
 467                   }
 468
 469                   std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 470                   this->emit_syncdraw(drawing_name, str_area.c_str());
 471                   this->enqueue_flushdraw(state.main);
 472                });
 473          }
 474       }
 475    }
 476
 477    // no error
 478    return nullptr;
 479 }
 480
 481 char const *App::api_deactivate_surface(char const *drawing_name) {
 482    ST();
 483    auto const &surface_id = this->lookup_id(drawing_name);
 484
 485    if (!surface_id) {
 486          return "Surface does not exist";
 487       }
 488
 489    if (*surface_id == this->layers.main_surface) {
 490       return "Cannot deactivate main_surface";
 491    }
 492
 493    auto o_state = *this->layers.get_layout_state(*surface_id);
 494
 495    if (o_state == nullptr) {
 496       return "Could not find layer for surface";
 497    }
 498
 499    struct LayoutState &state = *o_state;
 500
 501    if (state.main == -1) {
 502       return "No surface active";
 503    }
 504
 505    // Check against main_surface, main_surface_name is the configuration item.
 506    if (*surface_id == this->layers.main_surface) {
 507       HMI_DEBUG("wm", "Refusing to deactivate main_surface %d", *surface_id);
 508       return nullptr;
 509    }
 510
 511    if (state.main == *surface_id) {
 512       if (state.sub != -1) {
 513          this->try_layout(
 514             state, LayoutState{state.sub, -1}, [&] (LayoutState const &nl) {
 515                std::string sub = std::move(*this->lookup_name(state.sub));
 516
 517                this->deactivate(*surface_id);
 518                this->surface_set_layout(state.sub);
 519                state = nl;
 520
 521                this->layout_commit();
 522                std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 523                this->emit_syncdraw(sub.c_str(), str_area.c_str());
 524                this->enqueue_flushdraw(state.sub);
 525             });
 526       } else {
 527          this->try_layout(state, LayoutState{-1, -1}, [&] (LayoutState const &nl) {
 528             this->deactivate(*surface_id);
 529             state = nl;
 530             this->layout_commit();
 531          });
 532       }
 533    } else if (state.sub == *surface_id) {
 534       this->try_layout(
 535          state, LayoutState{state.main, -1}, [&] (LayoutState const &nl) {
 536             std::string main = std::move(*this->lookup_name(state.main));
 537
 538             this->deactivate(*surface_id);
 539             this->surface_set_layout(state.main);
 540             state = nl;
 541
 542             this->layout_commit();
 543             std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 544             this->emit_syncdraw(main.c_str(), str_area.c_str());
 545             this->enqueue_flushdraw(state.main);
 546          });
 547    } else {
 548       return "Surface is not active";
 549    }
 550
 551    return nullptr;
 552 }
 553
 554 void App::enqueue_flushdraw(int surface_id) {
 555    this->check_flushdraw(surface_id);
 556    HMI_DEBUG("wm", "Enqueuing EndDraw for surface_id %d", surface_id);
 557    this->pending_end_draw.push_back(surface_id);
 558 }
 559
 560 void App::check_flushdraw(int surface_id) {
 561    auto i = std::find(std::begin(this->pending_end_draw),
 562                       std::end(this->pending_end_draw), surface_id);
 563    if (i != std::end(this->pending_end_draw)) {
 564       auto n = this->lookup_name(surface_id);
 565       HMI_ERROR("wm", "Application %s (%d) has pending EndDraw call(s)!",
 566                n ? n->c_str() : "unknown-name", surface_id);
 567       std::swap(this->pending_end_draw[std::distance(
 568                    std::begin(this->pending_end_draw), i)],
 569                 this->pending_end_draw.back());
 570       this->pending_end_draw.resize(this->pending_end_draw.size() - 1);
 571    }
 572 }
 573
 574 char const *App::api_enddraw(char const *drawing_name) {
 575    for (unsigned i = 0, iend = this->pending_end_draw.size(); i < iend; i++) {
 576       auto n = this->lookup_name(this->pending_end_draw[i]);
 577       if (n && *n == drawing_name) {
 578          std::swap(this->pending_end_draw[i], this->pending_end_draw[iend - 1]);
 579          this->pending_end_draw.resize(iend - 1);
 580          this->activate(this->pending_end_draw[i]);
 581          this->layout_commit();
 582          this->emit_flushdraw(drawing_name);
 583          return nullptr;
 584       }
 585    }
 586    return "No EndDraw pending for surface";
 587 }
 588
 589 void App::api_ping() { this->dispatch_pending_events(); }
 590
 591 void App::send_event(char const *evname, char const *label){
 592    HMI_DEBUG("wm", "%s: %s(%s)", __func__, evname, label);
 593
 594    json_object *j = json_object_new_object();
 595    json_object_object_add(j, kKeyDrawingName, json_object_new_string(label));
 596
 597    int ret = afb_event_push(this->map_afb_event[evname], j);
 598    if (ret != 0) {
 599       HMI_DEBUG("wm", "afb_event_push failed: %m");
 600    }
 601 }
 602
 603 void App::send_event(char const *evname, char const *label, char const *area){
 604    HMI_DEBUG("wm", "%s: %s(%s, %s)", __func__, evname, label, area);
 605
 606    json_object *j = json_object_new_object();
 607    json_object_object_add(j, kKeyDrawingName, json_object_new_string(label));
 608    json_object_object_add(j, kKeyDrawingArea, json_object_new_string(area));
 609
 610    int ret = afb_event_push(this->map_afb_event[evname], j);
 611    if (ret != 0) {
 612       HMI_DEBUG("wm", "afb_event_push failed: %m");
 613    }
 614 }
 615
 616 /**
 617  * proxied events
 618  */
 619 void App::surface_created(uint32_t surface_id) {
 620    auto layer_id = this->layers.get_layer_id(surface_id);
 621    if (!layer_id) {
 622       HMI_DEBUG("wm", "Newly created surfce %d is not associated with any layer!",
 623                surface_id);
 624       return;
 625    }
 626
 627    HMI_DEBUG("wm", "surface_id is %u, layer_id is %u", surface_id, *layer_id);
 628
 629    this->controller->layers[*layer_id]->add_surface(
 630       this->controller->surfaces[surface_id].get());
 631    this->layout_commit();
 632    // activate the main_surface right away
 633    /*if (surface_id == static_cast<unsigned>(this->layers.main_surface)) {
 634       HMI_DEBUG("wm", "Activating main_surface (%d)", surface_id);
 635
 636       this->api_activate_surface(
 637          this->lookup_name(surface_id).value_or("unknown-name").c_str());
 638    }*/
 639 }
 640
 641 void App::surface_removed(uint32_t surface_id) {
 642    HMI_DEBUG("wm", "surface_id is %u", surface_id);
 643
 644    // We cannot normally deactivate the main_surface, so be explicit
 645    // about it:
 646    if (int(surface_id) == this->layers.main_surface) {
 647       this->deactivate_main_surface();
 648    } else {
 649       auto drawing_name = this->lookup_name(surface_id);
 650       if (drawing_name) {
 651          this->api_deactivate_surface(drawing_name->c_str());
 652       }
 653    }
 654
 655    this->id_alloc.remove_id(surface_id);
 656    this->layers.remove_surface(surface_id);
 657 }
 658
 659 void App::emit_activated(char const *label) {
 660    this->send_event(kListEventName[Event_Active], label);
 661 }
 662
 663 void App::emit_deactivated(char const *label) {
 664    this->send_event(kListEventName[Event_Inactive], label);
 665 }
 666
 667 void App::emit_syncdraw(char const *label, char const *area) {
 668     this->send_event(kListEventName[Event_SyncDraw], label, area);
 669 }
 670
 671 void App::emit_flushdraw(char const *label) {
 672    this->send_event(kListEventName[Event_FlushDraw], label);
 673 }
 674
 675 void App::emit_visible(char const *label, bool is_visible) {
 676    this->send_event(is_visible ? kListEventName[Event_Visible] : kListEventName[Event_Invisible], label);
 677 }
 678
 679 void App::emit_invisible(char const *label) {
 680    return emit_visible(label, false);
 681 }
 682
 683 void App::emit_visible(char const *label) { return emit_visible(label, true); }
 684
 685 result<int> App::api_request_surface(char const *drawing_name) {
 686    auto lid = this->layers.get_layer_id(std::string(drawing_name));
 687    if (!lid) {
 688       // TODO: Do we need to put these applications on the App layer?
 689       return Err<int>("Drawing name does not match any role");
 690    }
 691
 692    auto rname = this->lookup_id(drawing_name);
 693    if (!rname) {
 694       // name does not exist yet, allocate surface id...
 695       auto id = int(this->id_alloc.generate_id(drawing_name));
 696       this->layers.add_surface(id, *lid);
 697
 698       // set the main_surface[_name] here and now
 699       if (!this->layers.main_surface_name.empty() &&
 700           this->layers.main_surface_name == drawing_name) {
 701          this->layers.main_surface = id;
 702          HMI_DEBUG("wm", "Set main_surface id to %u", id);
 703       }
 704
 705       return Ok<int>(id);
 706    }
 707
 708    // Check currently registered drawing names if it is already there.
 709    return Err<int>("Surface already present");
 710 }
 711
 712 char const *App::api_request_surface(char const *drawing_name,
 713                                      char const *ivi_id) {
 714    ST();
 715
 716    auto lid = this->layers.get_layer_id(std::string(drawing_name));
 717    unsigned sid = std::stol(ivi_id);
 718
 719    if (!lid) {
 720        return "Drawing name does not match any role";
 721    }
 722
 723    auto rname = this->lookup_id(drawing_name);
 724
 725    if (rname) {
 726        return "Surface already present";
 727    }
 728
 729    // register pair drawing_name and ivi_id
 730    this->id_alloc.register_name_id(drawing_name, sid);
 731    this->layers.add_surface(sid, *lid);
 732
 733    // this surface is already created
 734    HMI_DEBUG("wm", "surface_id is %u, layer_id is %u", sid, *lid);
 735
 736    this->controller->layers[*lid]->add_surface(
 737        this->controller->surfaces[sid].get());
 738    this->layout_commit();
 739
 740    return nullptr;
 741 }
 742
 743 void App::activate(int id) {
 744    auto ip = this->controller->sprops.find(id);
 745    if (ip != this->controller->sprops.end()) {
 746       this->controller->surfaces[id]->set_visibility(1);
 747       char const *label =
 748          this->lookup_name(id).value_or("unknown-name").c_str();
 749
 750       // FOR CES DEMO >>>
 751       if ((0 == strcmp(label, "Radio"))
 752           || (0 == strcmp(label, "MediaPlayer"))
 753           || (0 == strcmp(label, "Music"))
 754           || (0 == strcmp(label, "Navigation"))) {
 755         for (auto i = surface_bg.begin(); i != surface_bg.end(); ++i) {
 756             if (id == *i) {
 757                // Remove id
 758                this->surface_bg.erase(i);
 759
 760                // Remove from BG layer (999)
 761                HMI_DEBUG("wm", "Remove %s(%d) from BG layer", label, id);
 762                this->controller->layers[999]->remove_surface(
 763                   this->controller->surfaces[id].get());
 764
 765                // Add to FG layer (1001)
 766                HMI_DEBUG("wm", "Add %s(%d) to FG layer", label, id);
 767                this->controller->layers[1001]->add_surface(
 768                   this->controller->surfaces[id].get());
 769
 770                for (int j : this->surface_bg) {
 771                  HMI_DEBUG("wm", "Stored id:%d", j);
 772                }
 773                break;
 774             }
 775          }
 776       }
 777       // <<< FOR CES DEMO
 778
 779       this->emit_visible(label);
 780       this->emit_activated(label);
 781    }
 782 }
 783
 784 void App::deactivate(int id) {
 785    auto ip = this->controller->sprops.find(id);
 786    if (ip != this->controller->sprops.end() && ip->second.visibility != 0) {
 787       char const *label =
 788          this->lookup_name(id).value_or("unknown-name").c_str();
 789
 790       // FOR CES DEMO >>>
 791       if ((0 == strcmp(label, "Radio"))
 792           || (0 == strcmp(label, "MediaPlayer"))
 793           || (0 == strcmp(label, "Music"))
 794           || (0 == strcmp(label, "Navigation"))) {
 795
 796          // Store id
 797          this->surface_bg.push_back(id);
 798
 799          // Remove from FG layer (1001)
 800          HMI_DEBUG("wm", "Remove %s(%d) from FG layer", label, id);
 801          this->controller->layers[1001]->remove_surface(
 802             this->controller->surfaces[id].get());
 803
 804          // Add to BG layer (999)
 805          HMI_DEBUG("wm", "Add %s(%d) to BG layer", label, id);
 806          this->controller->layers[999]->add_surface(
 807             this->controller->surfaces[id].get());
 808
 809          for (int j : surface_bg) {
 810             HMI_DEBUG("wm", "Stored id:%d", j);
 811          }
 812       }
 813       else {
 814          this->controller->surfaces[id]->set_visibility(0);
 815       }
 816       // <<< FOR CES DEMO
 817
 818       this->emit_deactivated(label);
 819       this->emit_invisible(label);
 820    }
 821 }
 822
 823 void App::deactivate_main_surface() {
 824    this->layers.main_surface = -1;
 825    this->api_deactivate_surface(this->layers.main_surface_name.c_str());
 826 }
 827
 828 bool App::can_split(struct LayoutState const &state, int new_id) {
 829    if (state.main != -1 && state.main != new_id) {
 830       auto new_id_layer = this->layers.get_layer_id(new_id).value();
 831       auto current_id_layer = this->layers.get_layer_id(state.main).value();
 832
 833       // surfaces are on separate layers, don't bother.
 834       if (new_id_layer != current_id_layer) {
 835          return false;
 836       }
 837
 838       std::string const &new_id_str = this->lookup_name(new_id).value();
 839       std::string const &cur_id_str = this->lookup_name(state.main).value();
 840
 841       auto const &layer = this->layers.get_layer(new_id_layer);
 842
 843       HMI_DEBUG("wm", "layer info name: %s", layer->name.c_str());
 844
 845       if (layer->layouts.empty()) {
 846          return false;
 847       }
 848
 849       for (auto i = layer->layouts.cbegin(); i != layer->layouts.cend(); i++) {
 850          HMI_DEBUG("wm", "%d main_match '%s'", new_id_layer, i->main_match.c_str());
 851          auto rem = std::regex(i->main_match);
 852          if (std::regex_match(cur_id_str, rem)) {
 853             // build the second one only if the first already matched
 854             HMI_DEBUG("wm", "%d sub_match '%s'", new_id_layer, i->sub_match.c_str());
 855             auto res = std::regex(i->sub_match);
 856             if (std::regex_match(new_id_str, res)) {
 857                HMI_DEBUG("wm", "layout matched!");
 858                return true;
 859             }
 860          }
 861       }
 862    }
 863
 864    return false;
 865 }
 866
 867 void App::try_layout(struct LayoutState & /*state*/,
 868                      struct LayoutState const &new_layout,
 869                      std::function<void(LayoutState const &nl)> apply) {
 870    if (this->policy.layout_is_valid(new_layout)) {
 871       apply(new_layout);
 872    }
 873 }
 874
 875 /**
 876  * controller_hooks
 877  */
 878 void controller_hooks::surface_created(uint32_t surface_id) {
 879    this->app->surface_created(surface_id);
 880 }
 881
 882 void controller_hooks::surface_removed(uint32_t surface_id) {
 883    this->app->surface_removed(surface_id);
 884 }
 885
 886 void controller_hooks::surface_visibility(uint32_t /*surface_id*/,
 887                                           uint32_t /*v*/) {}
 888
 889 void controller_hooks::surface_destination_rectangle(uint32_t /*surface_id*/,
 890                                                      uint32_t /*x*/,
 891                                                      uint32_t /*y*/,
 892                                                      uint32_t /*w*/,
 893                                                      uint32_t /*h*/) {}
 894
 895 }  // namespace wm