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 /* 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_controller", [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
 158    // First level objects
 159    this->display->roundtrip();
 160    // Second level objects
 161    this->display->roundtrip();
 162    // Third level objects
 163    this->display->roundtrip();
 164
 165    return init_layers();
 166 }
 167
 168 int App::dispatch_events() {
 169    if (this->dispatch_events() == 0) {
 170       return 0;
 171    }
 172
 173    int ret = this->display->dispatch();
 174    if (ret == -1) {
 175       HMI_ERROR("wm", "wl_display_dipatch() returned error %d",
 176                this->display->get_error());
 177       return -1;
 178    }
 179    this->display->flush();
 180
 181    return 0;
 182 }
 183
 184 int App::dispatch_pending_events() {
 185    if (this->pop_pending_events()) {
 186       this->display->dispatch_pending();
 187       return 0;
 188    }
 189    return -1;
 190 }
 191
 192 bool App::pop_pending_events() {
 193    bool x{true};
 194    return this->pending_events.compare_exchange_strong(
 195       x, false, std::memory_order_consume);
 196 }
 197
 198 void App::set_pending_events() {
 199    this->pending_events.store(true, std::memory_order_release);
 200 }
 201
 202 optional<int> App::lookup_id(char const *name) {
 203    return this->id_alloc.lookup(std::string(name));
 204 }
 205 optional<std::string> App::lookup_name(int id) {
 206    return this->id_alloc.lookup(id);
 207 }
 208
 209 /**
 210  * init_layers()
 211  */
 212 int App::init_layers() {
 213    if (!this->controller) {
 214       HMI_ERROR("wm", "ivi_controller global not available");
 215       return -1;
 216    }
 217
 218    if (this->outputs.empty()) {
 219       HMI_ERROR("wm", "no output was set up!");
 220       return -1;
 221    }
 222
 223    auto &c = this->controller;
 224
 225    auto &o = this->outputs.front();
 226    auto &s = c->screens.begin()->second;
 227    auto &layers = c->layers;
 228
 229    // Write output dimensions to ivi controller...
 230    c->output_size = compositor::size{uint32_t(o->width), uint32_t(o->height)};
 231    c->physical_size = compositor::size{uint32_t(o->physical_width),
 232                                        uint32_t(o->physical_height)};
 233
 234    // Clear scene
 235    layers.clear();
 236
 237    // Clear screen
 238    s->clear();
 239
 240    // Quick and dirty setup of layers
 241    for (auto const &i : this->layers.mapping) {
 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    if (!this->controller->surface_exists(surface_id)) {
 260       HMI_ERROR("wm", "Surface %d does not exist", surface_id);
 261       return;
 262    }
 263
 264    auto o_layer_id = this->layers.get_layer_id(surface_id);
 265
 266    if (!o_layer_id) {
 267       HMI_ERROR("wm", "Surface %d is not associated with any layer!", surface_id);
 268       return;
 269    }
 270
 271    uint32_t layer_id = *o_layer_id;
 272
 273    auto const &layer = this->layers.get_layer(layer_id);
 274    auto rect = layer.value().rect;
 275    auto &s = this->controller->surfaces[surface_id];
 276
 277    int x = rect.x;
 278    int y = rect.y;
 279    int w = rect.w;
 280    int h = rect.h;
 281
 282    // less-than-0 values refer to MAX + 1 - $VALUE
 283    // e.g. MAX is either screen width or height
 284    if (w < 0) {
 285       w = this->controller->output_size.w + 1 + w;
 286    }
 287    if (h < 0) {
 288       h = this->controller->output_size.h + 1 + h;
 289    }
 290
 291    if (sub_surface_id) {
 292       if (o_layer_id != this->layers.get_layer_id(*sub_surface_id)) {
 293          HMI_ERROR("wm",
 294             "surface_set_layout: layers of surfaces (%d and %d) don't match!",
 295             surface_id, *sub_surface_id);
 296          return;
 297       }
 298
 299       int x_off = 0;
 300       int y_off = 0;
 301
 302       // split along major axis
 303       if (w > h) {
 304          w /= 2;
 305          x_off = w;
 306       } else {
 307          h /= 2;
 308          y_off = h;
 309       }
 310
 311       auto &ss = this->controller->surfaces[*sub_surface_id];
 312
 313       HMI_DEBUG("wm", "surface_set_layout for sub surface %u on layer %u",
 314                *sub_surface_id, layer_id);
 315
 316       // set destination to the display rectangle
 317       ss->set_destination_rectangle(x + x_off, y + y_off, w, h);
 318
 319       this->area_info[*sub_surface_id].x = x;
 320       this->area_info[*sub_surface_id].y = y;
 321       this->area_info[*sub_surface_id].w = w;
 322       this->area_info[*sub_surface_id].h = h;
 323    }
 324
 325    HMI_DEBUG("wm", "surface_set_layout for surface %u on layer %u", surface_id,
 326             layer_id);
 327
 328    // set destination to the display rectangle
 329    s->set_destination_rectangle(x, y, w, h);
 330
 331    // update area information
 332    this->area_info[surface_id].x = x;
 333    this->area_info[surface_id].y = y;
 334    this->area_info[surface_id].w = w;
 335    this->area_info[surface_id].h = h;
 336
 337    HMI_DEBUG("wm", "Surface %u now on layer %u with rect { %d, %d, %d, %d }",
 338             surface_id, layer_id, x, y, w, h);
 339 }
 340
 341 void App::layout_commit() {
 342    this->controller->commit_changes();
 343    this->display->flush();
 344 }
 345
 346 char const *App::api_activate_surface(char const *drawing_name, char const *drawing_area) {
 347    ST();
 348
 349    auto const &surface_id = this->lookup_id(drawing_name);
 350
 351    if (!surface_id) {
 352       return "Surface does not exist";
 353    }
 354
 355    if (!this->controller->surface_exists(*surface_id)) {
 356       return "Surface does not exist in controller!";
 357    }
 358
 359    auto layer_id = this->layers.get_layer_id(*surface_id);
 360
 361    if (!layer_id) {
 362       return "Surface is not on any layer!";
 363    }
 364
 365    auto o_state = *this->layers.get_layout_state(*surface_id);
 366
 367    if (o_state == nullptr) {
 368       return "Could not find layer for surface";
 369    }
 370
 371    struct LayoutState &state = *o_state;
 372
 373    // disable layers that are above our current layer
 374    for (auto const &l : this->layers.mapping) {
 375       if (l.second.layer_id <= *layer_id) {
 376          continue;
 377       }
 378
 379       bool flush = false;
 380       if (l.second.state.main != -1) {
 381          this->deactivate(l.second.state.main);
 382          l.second.state.main = -1;
 383          flush = true;
 384       }
 385
 386       if (l.second.state.sub != -1) {
 387          this->deactivate(l.second.state.sub);
 388          l.second.state.sub = -1;
 389          flush = true;
 390       }
 391
 392       if (flush) {
 393          this->layout_commit();
 394       }
 395    }
 396
 397    auto layer = this->layers.get_layer(*layer_id);
 398
 399    if (state.main == -1) {
 400       this->try_layout(
 401          state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
 402             HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 403             this->surface_set_layout(*surface_id);
 404             state = nl;
 405
 406             // Commit for configuraton
 407             this->layout_commit();
 408
 409             std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 410             compositor::rect area_rect = this->area_info[*surface_id];
 411             this->emit_syncdraw(drawing_name, str_area.c_str(),
 412                                 area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 413             this->enqueue_flushdraw(state.main);
 414          });
 415    } else {
 416       if (0 == strcmp(drawing_name, "HomeScreen")) {
 417          this->try_layout(
 418             state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
 419                HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 420                std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 421                compositor::rect area_rect = this->area_info[*surface_id];
 422                this->emit_syncdraw(drawing_name, str_area.c_str(),
 423                                    area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 424                this->enqueue_flushdraw(state.main);
 425             });
 426       } else {
 427          bool can_split = this->can_split(state, *surface_id);
 428
 429          if (can_split) {
 430             this->try_layout(
 431                state,
 432                LayoutState{state.main, *surface_id},
 433                [&] (LayoutState const &nl) {
 434                   HMI_DEBUG("wm", "Layout: %s", kNameLayoutSplit);
 435                   std::string main =
 436                      std::move(*this->lookup_name(state.main));
 437
 438                   this->surface_set_layout(state.main, surface_id);
 439                   if (state.sub != *surface_id) {
 440                       if (state.sub != -1) {
 441                          this->deactivate(state.sub);
 442                       }
 443                   }
 444                   state = nl;
 445
 446                   // Commit for configuration and visibility(0)
 447                   this->layout_commit();
 448
 449                   std::string str_area_main = std::string(kNameLayoutSplit) + "." + std::string(kNameAreaMain);
 450                   std::string str_area_sub = std::string(kNameLayoutSplit) + "." + std::string(kNameAreaSub);
 451                   compositor::rect area_rect_main = this->area_info[state.main];
 452                   compositor::rect area_rect_sub = this->area_info[*surface_id];
 453                   this->emit_syncdraw(main.c_str(), str_area_main.c_str(),
 454                                       area_rect_main.x, area_rect_main.y,
 455                                       area_rect_main.w, area_rect_main.h);
 456                   this->emit_syncdraw(drawing_name, str_area_sub.c_str(),
 457                                       area_rect_sub.x, area_rect_sub.y,
 458                                       area_rect_sub.w, area_rect_sub.h);
 459                   this->enqueue_flushdraw(state.main);
 460                   this->enqueue_flushdraw(state.sub);
 461                });
 462          } else {
 463             this->try_layout(
 464                state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
 465                   HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 466
 467                   this->surface_set_layout(*surface_id);
 468                   if (state.main != *surface_id) {
 469                       this->deactivate(state.main);
 470                   }
 471                   if (state.sub != -1) {
 472                       if (state.sub != *surface_id) {
 473                          this->deactivate(state.sub);
 474                       }
 475                   }
 476                   state = nl;
 477
 478                   // Commit for configuraton and visibility(0)
 479                   this->layout_commit();
 480
 481                   std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 482                   compositor::rect area_rect = this->area_info[*surface_id];
 483                   this->emit_syncdraw(drawing_name, str_area.c_str(),
 484                                       area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 485                   this->enqueue_flushdraw(state.main);
 486                });
 487          }
 488       }
 489    }
 490
 491    // no error
 492    return nullptr;
 493 }
 494
 495 char const *App::api_deactivate_surface(char const *drawing_name) {
 496    ST();
 497    auto const &surface_id = this->lookup_id(drawing_name);
 498
 499    if (!surface_id) {
 500          return "Surface does not exist";
 501       }
 502
 503    if (*surface_id == this->layers.main_surface) {
 504       return "Cannot deactivate main_surface";
 505    }
 506
 507    auto o_state = *this->layers.get_layout_state(*surface_id);
 508
 509    if (o_state == nullptr) {
 510       return "Could not find layer for surface";
 511    }
 512
 513    struct LayoutState &state = *o_state;
 514
 515    if (state.main == -1) {
 516       return "No surface active";
 517    }
 518
 519    // Check against main_surface, main_surface_name is the configuration item.
 520    if (*surface_id == this->layers.main_surface) {
 521       HMI_DEBUG("wm", "Refusing to deactivate main_surface %d", *surface_id);
 522       return nullptr;
 523    }
 524
 525    if (state.main == *surface_id) {
 526       if (state.sub != -1) {
 527          this->try_layout(
 528             state, LayoutState{state.sub, -1}, [&] (LayoutState const &nl) {
 529                std::string sub = std::move(*this->lookup_name(state.sub));
 530
 531                this->deactivate(*surface_id);
 532                this->surface_set_layout(state.sub);
 533                state = nl;
 534
 535                this->layout_commit();
 536                std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 537                compositor::rect area_rect = this->area_info[state.sub];
 538                this->emit_syncdraw(sub.c_str(), str_area.c_str(),
 539                                    area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 540                this->enqueue_flushdraw(state.sub);
 541             });
 542       } else {
 543          this->try_layout(state, LayoutState{-1, -1}, [&] (LayoutState const &nl) {
 544             this->deactivate(*surface_id);
 545             state = nl;
 546             this->layout_commit();
 547          });
 548       }
 549    } else if (state.sub == *surface_id) {
 550       this->try_layout(
 551          state, LayoutState{state.main, -1}, [&] (LayoutState const &nl) {
 552             std::string main = std::move(*this->lookup_name(state.main));
 553
 554             this->deactivate(*surface_id);
 555             this->surface_set_layout(state.main);
 556             state = nl;
 557
 558             this->layout_commit();
 559             std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 560             compositor::rect area_rect = this->area_info[state.main];
 561             this->emit_syncdraw(main.c_str(), str_area.c_str(),
 562                                 area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 563             this->enqueue_flushdraw(state.main);
 564          });
 565    } else {
 566       return "Surface is not active";
 567    }
 568
 569    return nullptr;
 570 }
 571
 572 void App::enqueue_flushdraw(int surface_id) {
 573    this->check_flushdraw(surface_id);
 574    HMI_DEBUG("wm", "Enqueuing EndDraw for surface_id %d", surface_id);
 575    this->pending_end_draw.push_back(surface_id);
 576 }
 577
 578 void App::check_flushdraw(int surface_id) {
 579    auto i = std::find(std::begin(this->pending_end_draw),
 580                       std::end(this->pending_end_draw), surface_id);
 581    if (i != std::end(this->pending_end_draw)) {
 582       auto n = this->lookup_name(surface_id);
 583       HMI_ERROR("wm", "Application %s (%d) has pending EndDraw call(s)!",
 584                n ? n->c_str() : "unknown-name", surface_id);
 585       std::swap(this->pending_end_draw[std::distance(
 586                    std::begin(this->pending_end_draw), i)],
 587                 this->pending_end_draw.back());
 588       this->pending_end_draw.resize(this->pending_end_draw.size() - 1);
 589    }
 590 }
 591
 592 char const *App::api_enddraw(char const *drawing_name) {
 593    for (unsigned i = 0, iend = this->pending_end_draw.size(); i < iend; i++) {
 594       auto n = this->lookup_name(this->pending_end_draw[i]);
 595       if (n && *n == drawing_name) {
 596          std::swap(this->pending_end_draw[i], this->pending_end_draw[iend - 1]);
 597          this->pending_end_draw.resize(iend - 1);
 598          this->activate(this->pending_end_draw[i]);
 599          this->layout_commit();
 600          this->emit_flushdraw(drawing_name);
 601          return nullptr;
 602       }
 603    }
 604    return "No EndDraw pending for surface";
 605 }
 606
 607 void App::api_ping() { this->dispatch_pending_events(); }
 608
 609 void App::send_event(char const *evname, char const *label){
 610    HMI_DEBUG("wm", "%s: %s(%s)", __func__, evname, label);
 611
 612    json_object *j = json_object_new_object();
 613    json_object_object_add(j, kKeyDrawingName, json_object_new_string(label));
 614
 615    int ret = afb_event_push(this->map_afb_event[evname], j);
 616    if (ret != 0) {
 617       HMI_DEBUG("wm", "afb_event_push failed: %m");
 618    }
 619 }
 620
 621 void App::send_event(char const *evname, char const *label, char const *area,
 622                              int x, int y, int w, int h) {
 623    HMI_DEBUG("wm", "%s: %s(%s, %s) x:%d y:%d w:%d h:%d",
 624              __func__, evname, label, area, x, y, w, h);
 625
 626    json_object *j_rect = json_object_new_object();
 627    json_object_object_add(j_rect, kKeyX,      json_object_new_int(x));
 628    json_object_object_add(j_rect, kKeyY,      json_object_new_int(y));
 629    json_object_object_add(j_rect, kKeyWidth,  json_object_new_int(w));
 630    json_object_object_add(j_rect, kKeyHeight, json_object_new_int(h));
 631
 632    json_object *j = json_object_new_object();
 633    json_object_object_add(j, kKeyDrawingName, json_object_new_string(label));
 634    json_object_object_add(j, kKeyDrawingArea, json_object_new_string(area));
 635    json_object_object_add(j, kKeyDrawingRect, j_rect);
 636
 637    int ret = afb_event_push(this->map_afb_event[evname], j);
 638    if (ret != 0) {
 639       HMI_DEBUG("wm", "afb_event_push failed: %m");
 640    }
 641 }
 642
 643 /**
 644  * proxied events
 645  */
 646 void App::surface_created(uint32_t surface_id) {
 647    auto layer_id = this->layers.get_layer_id(surface_id);
 648    if (!layer_id) {
 649       HMI_DEBUG("wm", "Newly created surfce %d is not associated with any layer!",
 650                surface_id);
 651       return;
 652    }
 653
 654    HMI_DEBUG("wm", "surface_id is %u, layer_id is %u", surface_id, *layer_id);
 655
 656    this->controller->layers[*layer_id]->add_surface(
 657       this->controller->surfaces[surface_id].get());
 658    this->layout_commit();
 659    // activate the main_surface right away
 660    /*if (surface_id == static_cast<unsigned>(this->layers.main_surface)) {
 661       HMI_DEBUG("wm", "Activating main_surface (%d)", surface_id);
 662
 663       this->api_activate_surface(
 664          this->lookup_name(surface_id).value_or("unknown-name").c_str());
 665    }*/
 666 }
 667
 668 void App::surface_removed(uint32_t surface_id) {
 669    HMI_DEBUG("wm", "surface_id is %u", surface_id);
 670
 671    // We cannot normally deactivate the main_surface, so be explicit
 672    // about it:
 673    if (int(surface_id) == this->layers.main_surface) {
 674       this->deactivate_main_surface();
 675    } else {
 676       auto drawing_name = this->lookup_name(surface_id);
 677       if (drawing_name) {
 678          this->api_deactivate_surface(drawing_name->c_str());
 679       }
 680    }
 681
 682    this->id_alloc.remove_id(surface_id);
 683    this->layers.remove_surface(surface_id);
 684 }
 685
 686 void App::emit_activated(char const *label) {
 687    this->send_event(kListEventName[Event_Active], label);
 688 }
 689
 690 void App::emit_deactivated(char const *label) {
 691    this->send_event(kListEventName[Event_Inactive], label);
 692 }
 693
 694 void App::emit_syncdraw(char const *label, char const *area, int x, int y, int w, int h) {
 695    this->send_event(kListEventName[Event_SyncDraw], label, area, x, y, w, h);
 696 }
 697
 698 void App::emit_flushdraw(char const *label) {
 699    this->send_event(kListEventName[Event_FlushDraw], label);
 700 }
 701
 702 void App::emit_visible(char const *label, bool is_visible) {
 703    this->send_event(is_visible ? kListEventName[Event_Visible] : kListEventName[Event_Invisible], label);
 704 }
 705
 706 void App::emit_invisible(char const *label) {
 707    return emit_visible(label, false);
 708 }
 709
 710 void App::emit_visible(char const *label) { return emit_visible(label, true); }
 711
 712 result<int> App::api_request_surface(char const *drawing_name) {
 713    auto lid = this->layers.get_layer_id(std::string(drawing_name));
 714    if (!lid) {
 715       // TODO: Do we need to put these applications on the App layer?
 716       return Err<int>("Drawing name does not match any role");
 717    }
 718
 719    auto rname = this->lookup_id(drawing_name);
 720    if (!rname) {
 721       // name does not exist yet, allocate surface id...
 722       auto id = int(this->id_alloc.generate_id(drawing_name));
 723       this->layers.add_surface(id, *lid);
 724
 725       // set the main_surface[_name] here and now
 726       if (!this->layers.main_surface_name.empty() &&
 727           this->layers.main_surface_name == drawing_name) {
 728          this->layers.main_surface = id;
 729          HMI_DEBUG("wm", "Set main_surface id to %u", id);
 730       }
 731
 732       return Ok<int>(id);
 733    }
 734
 735    // Check currently registered drawing names if it is already there.
 736    return Err<int>("Surface already present");
 737 }
 738
 739 char const *App::api_request_surface(char const *drawing_name,
 740                                      char const *ivi_id) {
 741    ST();
 742
 743    auto lid = this->layers.get_layer_id(std::string(drawing_name));
 744    unsigned sid = std::stol(ivi_id);
 745
 746    if (!lid) {
 747        return "Drawing name does not match any role";
 748    }
 749
 750    auto rname = this->lookup_id(drawing_name);
 751
 752    if (rname) {
 753        return "Surface already present";
 754    }
 755
 756    // register pair drawing_name and ivi_id
 757    this->id_alloc.register_name_id(drawing_name, sid);
 758    this->layers.add_surface(sid, *lid);
 759
 760    // this surface is already created
 761    HMI_DEBUG("wm", "surface_id is %u, layer_id is %u", sid, *lid);
 762
 763    this->controller->layers[*lid]->add_surface(
 764        this->controller->surfaces[sid].get());
 765    this->layout_commit();
 766
 767    return nullptr;
 768 }
 769
 770 result<json_object *> App::api_get_display_info() {
 771    // Check controller
 772    if (!this->controller) {
 773       return Err<json_object *>("ivi_controller global not available");
 774    }
 775
 776    // Set display info
 777    compositor::size o_size = this->controller->output_size;
 778    compositor::size p_size = this->controller->physical_size;
 779
 780    json_object *object = json_object_new_object();
 781    json_object_object_add(object, kKeyWidthPixel,  json_object_new_int(o_size.w));
 782    json_object_object_add(object, kKeyHeightPixel, json_object_new_int(o_size.h));
 783    json_object_object_add(object, kKeyWidthMm,     json_object_new_int(p_size.w));
 784    json_object_object_add(object, kKeyHeightMm,    json_object_new_int(p_size.h));
 785
 786    return Ok<json_object *>(object);
 787 }
 788
 789 result<json_object *> App::api_get_area_info(char const *drawing_name) {
 790    HMI_DEBUG("wm", "called");
 791
 792    // Check drawing name, surface/layer id
 793    auto const &surface_id = this->lookup_id(drawing_name);
 794    if (!surface_id) {
 795       return Err<json_object *>("Surface does not exist");
 796    }
 797
 798    if (!this->controller->surface_exists(*surface_id)) {
 799       return Err<json_object *>("Surface does not exist in controller!");
 800    }
 801
 802    auto layer_id = this->layers.get_layer_id(*surface_id);
 803    if (!layer_id) {
 804       return Err<json_object *>("Surface is not on any layer!");
 805    }
 806
 807    auto o_state = *this->layers.get_layout_state(*surface_id);
 808    if (o_state == nullptr) {
 809       return Err<json_object *>("Could not find layer for surface");
 810    }
 811
 812    struct LayoutState &state = *o_state;
 813    if ((state.main != *surface_id) && (state.sub != *surface_id)) {
 814       return Err<json_object *>("Surface is inactive");
 815    }
 816
 817    // Set area rectangle
 818    compositor::rect area_info = this->area_info[*surface_id];
 819    json_object *object = json_object_new_object();
 820    json_object_object_add(object, kKeyX,      json_object_new_int(area_info.x));
 821    json_object_object_add(object, kKeyY,      json_object_new_int(area_info.y));
 822    json_object_object_add(object, kKeyWidth,  json_object_new_int(area_info.w));
 823    json_object_object_add(object, kKeyHeight, json_object_new_int(area_info.h));
 824
 825    return Ok<json_object *>(object);
 826 }
 827
 828 void App::activate(int id) {
 829    auto ip = this->controller->sprops.find(id);
 830    if (ip != this->controller->sprops.end()) {
 831       this->controller->surfaces[id]->set_visibility(1);
 832       char const *label =
 833          this->lookup_name(id).value_or("unknown-name").c_str();
 834
 835       // FOR CES DEMO >>>
 836       if ((0 == strcmp(label, "Radio"))
 837           || (0 == strcmp(label, "MediaPlayer"))
 838           || (0 == strcmp(label, "Music"))
 839           || (0 == strcmp(label, "Navigation"))) {
 840         for (auto i = surface_bg.begin(); i != surface_bg.end(); ++i) {
 841             if (id == *i) {
 842                // Remove id
 843                this->surface_bg.erase(i);
 844
 845                // Remove from BG layer (999)
 846                HMI_DEBUG("wm", "Remove %s(%d) from BG layer", label, id);
 847                this->controller->layers[999]->remove_surface(
 848                   this->controller->surfaces[id].get());
 849
 850                // Add to FG layer (1001)
 851                HMI_DEBUG("wm", "Add %s(%d) to FG layer", label, id);
 852                this->controller->layers[1001]->add_surface(
 853                   this->controller->surfaces[id].get());
 854
 855                for (int j : this->surface_bg) {
 856                  HMI_DEBUG("wm", "Stored id:%d", j);
 857                }
 858                break;
 859             }
 860          }
 861       }
 862       // <<< FOR CES DEMO
 863
 864       this->emit_visible(label);
 865       this->emit_activated(label);
 866    }
 867 }
 868
 869 void App::deactivate(int id) {
 870    auto ip = this->controller->sprops.find(id);
 871    if (ip != this->controller->sprops.end() && ip->second.visibility != 0) {
 872       char const *label =
 873          this->lookup_name(id).value_or("unknown-name").c_str();
 874
 875       // FOR CES DEMO >>>
 876       if ((0 == strcmp(label, "Radio"))
 877           || (0 == strcmp(label, "MediaPlayer"))
 878           || (0 == strcmp(label, "Music"))
 879           || (0 == strcmp(label, "Navigation"))) {
 880
 881          // Store id
 882          this->surface_bg.push_back(id);
 883
 884          // Remove from FG layer (1001)
 885          HMI_DEBUG("wm", "Remove %s(%d) from FG layer", label, id);
 886          this->controller->layers[1001]->remove_surface(
 887             this->controller->surfaces[id].get());
 888
 889          // Add to BG layer (999)
 890          HMI_DEBUG("wm", "Add %s(%d) to BG layer", label, id);
 891          this->controller->layers[999]->add_surface(
 892             this->controller->surfaces[id].get());
 893
 894          for (int j : surface_bg) {
 895             HMI_DEBUG("wm", "Stored id:%d", j);
 896          }
 897       }
 898       else {
 899          this->controller->surfaces[id]->set_visibility(0);
 900       }
 901       // <<< FOR CES DEMO
 902
 903       this->emit_deactivated(label);
 904       this->emit_invisible(label);
 905    }
 906 }
 907
 908 void App::deactivate_main_surface() {
 909    this->layers.main_surface = -1;
 910    this->api_deactivate_surface(this->layers.main_surface_name.c_str());
 911 }
 912
 913 bool App::can_split(struct LayoutState const &state, int new_id) {
 914    if (state.main != -1 && state.main != new_id) {
 915       auto new_id_layer = this->layers.get_layer_id(new_id).value();
 916       auto current_id_layer = this->layers.get_layer_id(state.main).value();
 917
 918       // surfaces are on separate layers, don't bother.
 919       if (new_id_layer != current_id_layer) {
 920          return false;
 921       }
 922
 923       std::string const &new_id_str = this->lookup_name(new_id).value();
 924       std::string const &cur_id_str = this->lookup_name(state.main).value();
 925
 926       auto const &layer = this->layers.get_layer(new_id_layer);
 927
 928       HMI_DEBUG("wm", "layer info name: %s", layer->name.c_str());
 929
 930       if (layer->layouts.empty()) {
 931          return false;
 932       }
 933
 934       for (auto i = layer->layouts.cbegin(); i != layer->layouts.cend(); i++) {
 935          HMI_DEBUG("wm", "%d main_match '%s'", new_id_layer, i->main_match.c_str());
 936          auto rem = std::regex(i->main_match);
 937          if (std::regex_match(cur_id_str, rem)) {
 938             // build the second one only if the first already matched
 939             HMI_DEBUG("wm", "%d sub_match '%s'", new_id_layer, i->sub_match.c_str());
 940             auto res = std::regex(i->sub_match);
 941             if (std::regex_match(new_id_str, res)) {
 942                HMI_DEBUG("wm", "layout matched!");
 943                return true;
 944             }
 945          }
 946       }
 947    }
 948
 949    return false;
 950 }
 951
 952 void App::try_layout(struct LayoutState & /*state*/,
 953                      struct LayoutState const &new_layout,
 954                      std::function<void(LayoutState const &nl)> apply) {
 955    if (this->policy.layout_is_valid(new_layout)) {
 956       apply(new_layout);
 957    }
 958 }
 959
 960 /**
 961  * controller_hooks
 962  */
 963 void controller_hooks::surface_created(uint32_t surface_id) {
 964    this->app->surface_created(surface_id);
 965 }
 966
 967 void controller_hooks::surface_removed(uint32_t surface_id) {
 968    this->app->surface_removed(surface_id);
 969 }
 970
 971 void controller_hooks::surface_visibility(uint32_t /*surface_id*/,
 972                                           uint32_t /*v*/) {}
 973
 974 void controller_hooks::surface_destination_rectangle(uint32_t /*surface_id*/,
 975                                                      uint32_t /*x*/,
 976                                                      uint32_t /*y*/,
 977                                                      uint32_t /*w*/,
 978                                                      uint32_t /*h*/) {}
 979
 980 }  // namespace wm