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