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 void App::api_activate_surface(char const *drawing_name, char const *drawing_area, const reply_func &reply) {
 337    ST();
 338
 339    auto const &surface_id = this->lookup_id(drawing_name);
 340
 341    if (!surface_id) {
 342        reply("Surface does not exist");
 343        return;
 344    }
 345
 346    if (!this->controller->surface_exists(*surface_id)) {
 347       reply("Surface does not exist in controller!");
 348       return;
 349    }
 350
 351    auto layer_id = this->layers.get_layer_id(*surface_id);
 352
 353    if (!layer_id) {
 354       reply("Surface is not on any layer!");
 355       return;
 356    }
 357
 358    auto o_state = *this->layers.get_layout_state(*surface_id);
 359
 360    if (o_state == nullptr) {
 361       reply("Could not find layer for surface");
 362       return;
 363    }
 364
 365    HMI_DEBUG("wm", "surface %d is detected", *surface_id);
 366    reply(nullptr);
 367
 368    struct LayoutState &state = *o_state;
 369
 370    // disable layers that are above our current layer
 371    for (auto const &l : this->layers.mapping) {
 372       if (l.second.layer_id <= *layer_id) {
 373          continue;
 374       }
 375
 376       bool flush = false;
 377       if (l.second.state.main != -1) {
 378          this->deactivate(l.second.state.main);
 379          l.second.state.main = -1;
 380          flush = true;
 381       }
 382
 383       if (l.second.state.sub != -1) {
 384          this->deactivate(l.second.state.sub);
 385          l.second.state.sub = -1;
 386          flush = true;
 387       }
 388
 389       if (flush) {
 390          this->layout_commit();
 391       }
 392    }
 393
 394    auto layer = this->layers.get_layer(*layer_id);
 395
 396    if (state.main == -1) {
 397       this->try_layout(
 398          state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
 399             HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 400             this->surface_set_layout(*surface_id);
 401             state = nl;
 402
 403             // Commit for configuraton
 404             this->layout_commit();
 405
 406             std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 407             compositor::rect area_rect = this->area_info[*surface_id];
 408             this->emit_syncdraw(drawing_name, str_area.c_str(),
 409                                 area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 410             this->enqueue_flushdraw(state.main);
 411          });
 412    } else {
 413       if (0 == strcmp(drawing_name, "HomeScreen")) {
 414          this->try_layout(
 415             state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
 416                HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 417                std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 418                compositor::rect area_rect = this->area_info[*surface_id];
 419                this->emit_syncdraw(drawing_name, str_area.c_str(),
 420                                    area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 421                this->enqueue_flushdraw(state.main);
 422             });
 423       } else {
 424          bool can_split = this->can_split(state, *surface_id);
 425
 426          if (can_split) {
 427             this->try_layout(
 428                state,
 429                LayoutState{state.main, *surface_id},
 430                [&] (LayoutState const &nl) {
 431                   HMI_DEBUG("wm", "Layout: %s", kNameLayoutSplit);
 432                   std::string main =
 433                      std::move(*this->lookup_name(state.main));
 434
 435                   this->surface_set_layout(state.main, surface_id);
 436                   if (state.sub != *surface_id) {
 437                       if (state.sub != -1) {
 438                          this->deactivate(state.sub);
 439                       }
 440                   }
 441                   state = nl;
 442
 443                   // Commit for configuration and visibility(0)
 444                   this->layout_commit();
 445
 446                   std::string str_area_main = std::string(kNameLayoutSplit) + "." + std::string(kNameAreaMain);
 447                   std::string str_area_sub = std::string(kNameLayoutSplit) + "." + std::string(kNameAreaSub);
 448                   compositor::rect area_rect_main = this->area_info[state.main];
 449                   compositor::rect area_rect_sub = this->area_info[*surface_id];
 450                   this->emit_syncdraw(main.c_str(), str_area_main.c_str(),
 451                                       area_rect_main.x, area_rect_main.y,
 452                                       area_rect_main.w, area_rect_main.h);
 453                   this->emit_syncdraw(drawing_name, str_area_sub.c_str(),
 454                                       area_rect_sub.x, area_rect_sub.y,
 455                                       area_rect_sub.w, area_rect_sub.h);
 456                   this->enqueue_flushdraw(state.main);
 457                   this->enqueue_flushdraw(state.sub);
 458                });
 459          } else {
 460             this->try_layout(
 461                state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
 462                   HMI_DEBUG("wm", "Layout: %s", kNameLayoutNormal);
 463
 464                   this->surface_set_layout(*surface_id);
 465                   if (state.main != *surface_id) {
 466                       this->deactivate(state.main);
 467                   }
 468                   if (state.sub != -1) {
 469                       if (state.sub != *surface_id) {
 470                          this->deactivate(state.sub);
 471                       }
 472                   }
 473                   state = nl;
 474
 475                   // Commit for configuraton and visibility(0)
 476                   this->layout_commit();
 477
 478                   std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 479                   compositor::rect area_rect = this->area_info[*surface_id];
 480                   this->emit_syncdraw(drawing_name, str_area.c_str(),
 481                                       area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 482                   this->enqueue_flushdraw(state.main);
 483                });
 484          }
 485       }
 486    }
 487 }
 488
 489 void App::api_deactivate_surface(char const *drawing_name, const reply_func &reply) {
 490    ST();
 491    auto const &surface_id = this->lookup_id(drawing_name);
 492
 493    if (!surface_id) {
 494       reply ("Surface does not exist");
 495       return;
 496    }
 497
 498    if (*surface_id == this->layers.main_surface) {
 499       reply("Cannot deactivate main_surface");
 500       return;
 501    }
 502
 503    auto o_state = *this->layers.get_layout_state(*surface_id);
 504
 505    if (o_state == nullptr) {
 506       reply("Could not find layer for surface");
 507       return;
 508    }
 509
 510    struct LayoutState &state = *o_state;
 511
 512    if (state.main == -1) {
 513       reply("No surface active");
 514       return;
 515    }
 516
 517    // Check against main_surface, main_surface_name is the configuration item.
 518    if (*surface_id == this->layers.main_surface) {
 519       HMI_DEBUG("wm", "Refusing to deactivate main_surface %d", *surface_id);
 520       reply(nullptr);
 521       return;
 522    }
 523    if((state.main == *surface_id) && (state.sub == *surface_id)){
 524        reply("Surface is not active");
 525        return;
 526    }
 527    reply(nullptr);
 528
 529    if (state.main == *surface_id) {
 530       if (state.sub != -1) {
 531          this->try_layout(
 532             state, LayoutState{state.sub, -1}, [&] (LayoutState const &nl) {
 533                std::string sub = std::move(*this->lookup_name(state.sub));
 534
 535                this->deactivate(*surface_id);
 536                this->surface_set_layout(state.sub);
 537                state = nl;
 538
 539                this->layout_commit();
 540                std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 541                compositor::rect area_rect = this->area_info[state.sub];
 542                this->emit_syncdraw(sub.c_str(), str_area.c_str(),
 543                                    area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 544                this->enqueue_flushdraw(state.sub);
 545             });
 546       } else {
 547          this->try_layout(state, LayoutState{-1, -1}, [&] (LayoutState const &nl) {
 548             this->deactivate(*surface_id);
 549             state = nl;
 550             this->layout_commit();
 551          });
 552       }
 553    } else if (state.sub == *surface_id) {
 554       this->try_layout(
 555          state, LayoutState{state.main, -1}, [&] (LayoutState const &nl) {
 556             std::string main = std::move(*this->lookup_name(state.main));
 557
 558             this->deactivate(*surface_id);
 559             this->surface_set_layout(state.main);
 560             state = nl;
 561
 562             this->layout_commit();
 563             std::string str_area = std::string(kNameLayoutNormal) + "." + std::string(kNameAreaFull);
 564             compositor::rect area_rect = this->area_info[state.main];
 565             this->emit_syncdraw(main.c_str(), str_area.c_str(),
 566                                 area_rect.x, area_rect.y, area_rect.w, area_rect.h);
 567             this->enqueue_flushdraw(state.main);
 568          });
 569    }
 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 void 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->emit_flushdraw(drawing_name);
 600       }
 601    }
 602 }
 603
 604 void App::api_ping() { this->dispatch_pending_events(); }
 605
 606 void App::send_event(char const *evname, char const *label){
 607    HMI_DEBUG("wm", "%s: %s(%s)", __func__, evname, label);
 608
 609    json_object *j = json_object_new_object();
 610    json_object_object_add(j, kKeyDrawingName, json_object_new_string(label));
 611
 612    int ret = afb_event_push(this->map_afb_event[evname], j);
 613    if (ret != 0) {
 614       HMI_DEBUG("wm", "afb_event_push failed: %m");
 615    }
 616 }
 617
 618 void App::send_event(char const *evname, char const *label, char const *area,
 619                              int x, int y, int w, int h) {
 620    HMI_DEBUG("wm", "%s: %s(%s, %s) x:%d y:%d w:%d h:%d",
 621              __func__, evname, label, area, x, y, w, h);
 622
 623    json_object *j_rect = json_object_new_object();
 624    json_object_object_add(j_rect, kKeyX,      json_object_new_int(x));
 625    json_object_object_add(j_rect, kKeyY,      json_object_new_int(y));
 626    json_object_object_add(j_rect, kKeyWidth,  json_object_new_int(w));
 627    json_object_object_add(j_rect, kKeyHeight, json_object_new_int(h));
 628
 629    json_object *j = json_object_new_object();
 630    json_object_object_add(j, kKeyDrawingName, json_object_new_string(label));
 631    json_object_object_add(j, kKeyDrawingArea, json_object_new_string(area));
 632    json_object_object_add(j, kKeyDrawingRect, j_rect);
 633
 634    int ret = afb_event_push(this->map_afb_event[evname], j);
 635    if (ret != 0) {
 636       HMI_DEBUG("wm", "afb_event_push failed: %m");
 637    }
 638 }
 639
 640 /**
 641  * proxied events
 642  */
 643 void App::surface_created(uint32_t surface_id) {
 644    auto layer_id = this->layers.get_layer_id(surface_id);
 645    if (!layer_id) {
 646       HMI_DEBUG("wm", "Newly created surfce %d is not associated with any layer!",
 647                surface_id);
 648       return;
 649    }
 650
 651    HMI_DEBUG("wm", "surface_id is %u, layer_id is %u", surface_id, *layer_id);
 652
 653    this->controller->layers[*layer_id]->add_surface(surface_id);
 654    this->layout_commit();
 655    // activate the main_surface right away
 656    /*if (surface_id == static_cast<unsigned>(this->layers.main_surface)) {
 657       HMI_DEBUG("wm", "Activating main_surface (%d)", surface_id);
 658
 659       this->api_activate_surface(
 660          this->lookup_name(surface_id).value_or("unknown-name").c_str());
 661    }*/
 662 }
 663
 664 void App::surface_removed(uint32_t surface_id) {
 665    HMI_DEBUG("wm", "surface_id is %u", surface_id);
 666
 667    // We cannot normally deactivate the main_surface, so be explicit
 668    // about it:
 669    if (int(surface_id) == this->layers.main_surface) {
 670       this->deactivate_main_surface();
 671    } else {
 672       auto drawing_name = this->lookup_name(surface_id);
 673       if (drawing_name) {
 674          this->api_deactivate_surface(drawing_name->c_str(), [](const char*){});
 675       }
 676    }
 677
 678    this->id_alloc.remove_id(surface_id);
 679    this->layers.remove_surface(surface_id);
 680 }
 681
 682 void App::emit_activated(char const *label) {
 683    this->send_event(kListEventName[Event_Active], label);
 684 }
 685
 686 void App::emit_deactivated(char const *label) {
 687    this->send_event(kListEventName[Event_Inactive], label);
 688 }
 689
 690 void App::emit_syncdraw(char const *label, char const *area, int x, int y, int w, int h) {
 691    this->send_event(kListEventName[Event_SyncDraw], label, area, x, y, w, h);
 692 }
 693
 694 void App::emit_flushdraw(char const *label) {
 695    this->send_event(kListEventName[Event_FlushDraw], label);
 696 }
 697
 698 void App::emit_visible(char const *label, bool is_visible) {
 699    this->send_event(is_visible ? kListEventName[Event_Visible] : kListEventName[Event_Invisible], label);
 700 }
 701
 702 void App::emit_invisible(char const *label) {
 703    return emit_visible(label, false);
 704 }
 705
 706 void App::emit_visible(char const *label) { return emit_visible(label, true); }
 707
 708 result<int> App::api_request_surface(char const *drawing_name) {
 709    auto lid = this->layers.get_layer_id(std::string(drawing_name));
 710    if (!lid) {
 711       /**
 712        * register drawing_name as fallback and make it displayed.
 713        */
 714       lid = this->layers.get_layer_id(std::string("Fallback"));
 715       HMI_DEBUG("wm", "%s is not registered in layers.json, then fallback as normal app", drawing_name);
 716       if(!lid){
 717           return Err<int>("Drawing name does not match any role, Fallback is disabled");
 718       }
 719    }
 720
 721    auto rname = this->lookup_id(drawing_name);
 722    if (!rname) {
 723       // name does not exist yet, allocate surface id...
 724       auto id = int(this->id_alloc.generate_id(drawing_name));
 725       this->layers.add_surface(id, *lid);
 726
 727       // set the main_surface[_name] here and now
 728       if (!this->layers.main_surface_name.empty() &&
 729           this->layers.main_surface_name == drawing_name) {
 730          this->layers.main_surface = id;
 731          HMI_DEBUG("wm", "Set main_surface id to %u", id);
 732       }
 733
 734       return Ok<int>(id);
 735    }
 736
 737    // Check currently registered drawing names if it is already there.
 738    return Err<int>("Surface already present");
 739 }
 740
 741 char const *App::api_request_surface(char const *drawing_name,
 742                                      char const *ivi_id) {
 743    ST();
 744
 745    auto lid = this->layers.get_layer_id(std::string(drawing_name));
 746    unsigned sid = std::stol(ivi_id);
 747
 748    if (!lid) {
 749       /**
 750        * register drawing_name as fallback and make it displayed.
 751        */
 752       lid = this->layers.get_layer_id(std::string("Fallback"));
 753       HMI_DEBUG("wm", "%s is not registered in layers.json, then fallback as normal app", drawing_name);
 754       if(!lid){
 755           return "Drawing name does not match any role, Fallback is disabled";
 756       }
 757    }
 758
 759    auto rname = this->lookup_id(drawing_name);
 760
 761    if (rname) {
 762        return "Surface already present";
 763    }
 764
 765    // register pair drawing_name and ivi_id
 766    this->id_alloc.register_name_id(drawing_name, sid);
 767    this->layers.add_surface(sid, *lid);
 768
 769    // this surface is already created
 770    HMI_DEBUG("wm", "surface_id is %u, layer_id is %u", sid, *lid);
 771
 772    this->controller->layers[*lid]->add_surface(sid);
 773    this->layout_commit();
 774
 775    return nullptr;
 776 }
 777
 778 result<json_object *> App::api_get_display_info() {
 779    // Check controller
 780    if (!this->controller) {
 781       return Err<json_object *>("ivi_controller global not available");
 782    }
 783
 784    // Set display info
 785    compositor::size o_size = this->controller->output_size;
 786    compositor::size p_size = this->controller->physical_size;
 787
 788    json_object *object = json_object_new_object();
 789    json_object_object_add(object, kKeyWidthPixel,  json_object_new_int(o_size.w));
 790    json_object_object_add(object, kKeyHeightPixel, json_object_new_int(o_size.h));
 791    json_object_object_add(object, kKeyWidthMm,     json_object_new_int(p_size.w));
 792    json_object_object_add(object, kKeyHeightMm,    json_object_new_int(p_size.h));
 793
 794    return Ok<json_object *>(object);
 795 }
 796
 797 result<json_object *> App::api_get_area_info(char const *drawing_name) {
 798    HMI_DEBUG("wm", "called");
 799
 800    // Check drawing name, surface/layer id
 801    auto const &surface_id = this->lookup_id(drawing_name);
 802    if (!surface_id) {
 803       return Err<json_object *>("Surface does not exist");
 804    }
 805
 806    if (!this->controller->surface_exists(*surface_id)) {
 807       return Err<json_object *>("Surface does not exist in controller!");
 808    }
 809
 810    auto layer_id = this->layers.get_layer_id(*surface_id);
 811    if (!layer_id) {
 812       return Err<json_object *>("Surface is not on any layer!");
 813    }
 814
 815    auto o_state = *this->layers.get_layout_state(*surface_id);
 816    if (o_state == nullptr) {
 817       return Err<json_object *>("Could not find layer for surface");
 818    }
 819
 820    struct LayoutState &state = *o_state;
 821    if ((state.main != *surface_id) && (state.sub != *surface_id)) {
 822       return Err<json_object *>("Surface is inactive");
 823    }
 824
 825    // Set area rectangle
 826    compositor::rect area_info = this->area_info[*surface_id];
 827    json_object *object = json_object_new_object();
 828    json_object_object_add(object, kKeyX,      json_object_new_int(area_info.x));
 829    json_object_object_add(object, kKeyY,      json_object_new_int(area_info.y));
 830    json_object_object_add(object, kKeyWidth,  json_object_new_int(area_info.w));
 831    json_object_object_add(object, kKeyHeight, json_object_new_int(area_info.h));
 832
 833    return Ok<json_object *>(object);
 834 }
 835
 836 void App::activate(int id) {
 837    auto ip = this->controller->sprops.find(id);
 838    if (ip != this->controller->sprops.end()) {
 839       this->controller->surfaces[id]->set_visibility(1);
 840       char const *label =
 841          this->lookup_name(id).value_or("unknown-name").c_str();
 842
 843       // FOR CES DEMO >>>
 844       if ((0 == strcmp(label, "Radio"))
 845           || (0 == strcmp(label, "MediaPlayer"))
 846           || (0 == strcmp(label, "Music"))
 847           || (0 == strcmp(label, "Navigation"))) {
 848         for (auto i = surface_bg.begin(); i != surface_bg.end(); ++i) {
 849             if (id == *i) {
 850                // Remove id
 851                this->surface_bg.erase(i);
 852
 853                // Remove from BG layer (999)
 854                HMI_DEBUG("wm", "Remove %s(%d) from BG layer", label, id);
 855                this->controller->layers[999]->remove_surface(id);
 856
 857                // Add to FG layer (1001)
 858                HMI_DEBUG("wm", "Add %s(%d) to FG layer", label, id);
 859                this->controller->layers[1001]->add_surface(id);
 860
 861                for (int j : this->surface_bg) {
 862                  HMI_DEBUG("wm", "Stored id:%d", j);
 863                }
 864                break;
 865             }
 866          }
 867       }
 868       // <<< FOR CES DEMO
 869       this->layout_commit();
 870
 871       this->emit_visible(label);
 872       this->emit_activated(label);
 873    }
 874 }
 875
 876 void App::deactivate(int id) {
 877    auto ip = this->controller->sprops.find(id);
 878    if (ip != this->controller->sprops.end()) {
 879       char const *label =
 880          this->lookup_name(id).value_or("unknown-name").c_str();
 881
 882       // FOR CES DEMO >>>
 883       if ((0 == strcmp(label, "Radio"))
 884           || (0 == strcmp(label, "MediaPlayer"))
 885           || (0 == strcmp(label, "Music"))
 886           || (0 == strcmp(label, "Navigation"))) {
 887
 888          // Store id
 889          this->surface_bg.push_back(id);
 890
 891          // Remove from FG layer (1001)
 892          HMI_DEBUG("wm", "Remove %s(%d) from FG layer", label, id);
 893          this->controller->layers[1001]->remove_surface(id);
 894
 895          // Add to BG layer (999)
 896          HMI_DEBUG("wm", "Add %s(%d) to BG layer", label, id);
 897          this->controller->layers[999]->add_surface(id);
 898
 899          for (int j : surface_bg) {
 900             HMI_DEBUG("wm", "Stored id:%d", j);
 901          }
 902       }
 903       else {
 904          this->controller->surfaces[id]->set_visibility(0);
 905       }
 906       // <<< FOR CES DEMO
 907
 908       this->emit_deactivated(label);
 909       this->emit_invisible(label);
 910    }
 911 }
 912
 913 void App::deactivate_main_surface() {
 914    this->layers.main_surface = -1;
 915    this->api_deactivate_surface(this->layers.main_surface_name.c_str(), [](const char*){});
 916 }
 917
 918 bool App::can_split(struct LayoutState const &state, int new_id) {
 919    if (state.main != -1 && state.main != new_id) {
 920       auto new_id_layer = this->layers.get_layer_id(new_id).value();
 921       auto current_id_layer = this->layers.get_layer_id(state.main).value();
 922
 923       // surfaces are on separate layers, don't bother.
 924       if (new_id_layer != current_id_layer) {
 925          return false;
 926       }
 927
 928       std::string const &new_id_str = this->lookup_name(new_id).value();
 929       std::string const &cur_id_str = this->lookup_name(state.main).value();
 930
 931       auto const &layer = this->layers.get_layer(new_id_layer);
 932
 933       HMI_DEBUG("wm", "layer info name: %s", layer->name.c_str());
 934
 935       if (layer->layouts.empty()) {
 936          return false;
 937       }
 938
 939       for (auto i = layer->layouts.cbegin(); i != layer->layouts.cend(); i++) {
 940          HMI_DEBUG("wm", "%d main_match '%s'", new_id_layer, i->main_match.c_str());
 941          auto rem = std::regex(i->main_match);
 942          if (std::regex_match(cur_id_str, rem)) {
 943             // build the second one only if the first already matched
 944             HMI_DEBUG("wm", "%d sub_match '%s'", new_id_layer, i->sub_match.c_str());
 945             auto res = std::regex(i->sub_match);
 946             if (std::regex_match(new_id_str, res)) {
 947                HMI_DEBUG("wm", "layout matched!");
 948                return true;
 949             }
 950          }
 951       }
 952    }
 953
 954    return false;
 955 }
 956
 957 void App::try_layout(struct LayoutState & /*state*/,
 958                      struct LayoutState const &new_layout,
 959                      std::function<void(LayoutState const &nl)> apply) {
 960    if (this->policy.layout_is_valid(new_layout)) {
 961       apply(new_layout);
 962    }
 963 }
 964
 965 /**
 966  * controller_hooks
 967  */
 968 void controller_hooks::surface_created(uint32_t surface_id) {
 969    this->app->surface_created(surface_id);
 970 }
 971
 972 void controller_hooks::surface_removed(uint32_t surface_id) {
 973    this->app->surface_removed(surface_id);
 974 }
 975
 976 void controller_hooks::surface_visibility(uint32_t /*surface_id*/,
 977                                           uint32_t /*v*/) {}
 978
 979 void controller_hooks::surface_destination_rectangle(uint32_t /*surface_id*/,
 980                                                      uint32_t /*x*/,
 981                                                      uint32_t /*y*/,
 982                                                      uint32_t /*w*/,
 983                                                      uint32_t /*h*/) {}
 984
 985 }  // namespace wm