src/layers.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 <regex>
  18
  19 #include "layers.hpp"
  20 #include "json_helper.hpp"
  21 #include "hmi-debug.h"
  22
  23 namespace wm
  24 {
  25
  26 using json = nlohmann::json;
  27
  28 layer::layer(nlohmann::json const &j)
  29 {
  30     this->role = j["role"];
  31     this->name = j["name"];
  32     this->layer_id = j["layer_id"];
  33
  34     // Init flag of normal layout only
  35     this->is_normal_layout_only = true;
  36
  37     auto split_layouts = j.find("split_layouts");
  38     if (split_layouts != j.end())
  39     {
  40
  41         // Clear flag of normal layout only
  42         this->is_normal_layout_only = false;
  43
  44         auto &sls = j["split_layouts"];
  45         // this->layouts.reserve(sls.size());
  46         std::transform(std::cbegin(sls), std::cend(sls),
  47                        std::back_inserter(this->layouts), [this](json const &sl) {
  48                            struct split_layout l
  49                            {
  50                                sl["name"], sl["main_match"], sl["sub_match"]
  51                            };
  52                            HMI_DEBUG("wm",
  53                                      "layer %d add split_layout \"%s\" (main: \"%s\") (sub: "
  54                                      "\"%s\")",
  55                                      this->layer_id,
  56                                      l.name.c_str(), l.main_match.c_str(),
  57                                      l.sub_match.c_str());
  58                            return l;
  59                        });
  60     }
  61     HMI_DEBUG("wm", "layer_id:%d is_normal_layout_only:%d\n",
  62               this->layer_id, this->is_normal_layout_only);
  63 }
  64
  65 struct result<struct layer_map> to_layer_map(nlohmann::json const &j)
  66 {
  67     try
  68     {
  69         layer_map stl{};
  70         auto m = j["mappings"];
  71
  72         std::transform(std::cbegin(m), std::cend(m),
  73                        std::inserter(stl.mapping, stl.mapping.end()),
  74                        [](nlohmann::json const &j) {
  75                            return std::pair<int, struct layer>(
  76                                j.value("layer_id", -1), layer(j));
  77                        });
  78
  79         // TODO: add sanity checks here?
  80         // * check for double IDs
  81         // * check for double names/roles
  82
  83         stl.layers.reserve(m.size());
  84         std::transform(std::cbegin(stl.mapping), std::cend(stl.mapping),
  85                        std::back_inserter(stl.layers),
  86                        [&stl](std::pair<int, struct layer> const &k) {
  87                            stl.roles.emplace_back(
  88                                std::make_pair(k.second.role, k.second.layer_id));
  89                            return unsigned(k.second.layer_id);
  90                        });
  91
  92         std::sort(stl.layers.begin(), stl.layers.end());
  93
  94         for (auto i : stl.mapping)
  95         {
  96             if (i.second.name.empty())
  97             {
  98                 return Err<struct layer_map>("Found mapping w/o name");
  99             }
 100             if (i.second.layer_id == -1)
 101             {
 102                 return Err<struct layer_map>("Found invalid/unset IDs in mapping");
 103             }
 104         }
 105
 106         auto msi = j.find("main_surface");
 107         if (msi != j.end())
 108         {
 109             stl.main_surface_name = msi->value("surface_role", "");
 110             stl.main_surface = -1;
 111         }
 112
 113         return Ok(stl);
 114     }
 115     catch (std::exception &e)
 116     {
 117         return Err<struct layer_map>(e.what());
 118     }
 119 }
 120
 121 optional<int>
 122 layer_map::get_layer_id(int surface_id)
 123 {
 124     auto i = this->surfaces.find(surface_id);
 125     if (i != this->surfaces.end())
 126     {
 127         return optional<int>(i->second);
 128     }
 129     return nullopt;
 130 }
 131
 132 optional<int> layer_map::get_layer_id(std::string const &role)
 133 {
 134     for (auto const &r : this->roles)
 135     {
 136         auto re = std::regex(r.first);
 137         if (std::regex_match(role, re))
 138         {
 139             HMI_DEBUG("wm", "role %s matches layer %d", role.c_str(), r.second);
 140             return optional<int>(r.second);
 141         }
 142     }
 143     HMI_DEBUG("wm", "role %s does NOT match any layer", role.c_str());
 144     return nullopt;
 145 }
 146
 147 json layer::to_json() const
 148 {
 149     auto is_full = this->rect == compositor::full_rect;
 150
 151     json r{};
 152     if (is_full)
 153     {
 154         r = {{"type", "full"}};
 155     }
 156     else
 157     {
 158         r = {{"type", "rect"},
 159              {"rect",
 160               {{"x", this->rect.x},
 161                {"y", this->rect.y},
 162                {"width", this->rect.w},
 163                {"height", this->rect.h}}}};
 164     }
 165
 166     return {
 167         {"name", this->name},
 168         {"role", this->role},
 169         {"layer_id", this->layer_id},
 170         {"area", r},
 171     };
 172 }
 173
 174 json layer_map::to_json() const
 175 {
 176     json j{};
 177     for (auto const &i : this->mapping)
 178     {
 179         j.push_back(i.second.to_json());
 180     }
 181     return j;
 182 }
 183
 184 void layer_map::setupArea(double scaling)
 185 {
 186     compositor::rect rct;
 187
 188     rct = this->area2size["normal.full"];
 189     this->area2size["normalfull"] = rct;
 190     this->area2size["normal"] = rct;
 191
 192     for (auto &i : this->area2size)
 193     {
 194         i.second.x = static_cast<int>(scaling * i.second.x + 0.5);
 195         i.second.y = static_cast<int>(scaling * i.second.y + 0.5);
 196         i.second.w = static_cast<int>(scaling * i.second.w + 0.5);
 197         i.second.h = static_cast<int>(scaling * i.second.h + 0.5);
 198
 199         HMI_DEBUG("wm:lm", "area:%s size(after) : x:%d y:%d w:%d h:%d",
 200             i.first.c_str(), i.second.x, i.second.y, i.second.w, i.second.h);
 201     }
 202 }
 203
 204 compositor::rect layer_map::getAreaSize(const std::string &area)
 205 {
 206     return area2size[area];
 207 }
 208
 209 int layer_map::loadAreaDb()
 210 {
 211     HMI_DEBUG("wm:lm", "Call");
 212
 213     // Get afm application installed dir
 214     char const *afm_app_install_dir = getenv("AFM_APP_INSTALL_DIR");
 215     HMI_DEBUG("wm:lm", "afm_app_install_dir:%s", afm_app_install_dir);
 216
 217     std::string file_name;
 218     if (!afm_app_install_dir)
 219     {
 220         HMI_ERROR("wm:lm", "AFM_APP_INSTALL_DIR is not defined");
 221     }
 222     else
 223     {
 224         file_name = std::string(afm_app_install_dir) + std::string("/etc/areas.db");
 225     }
 226
 227     // Load area.db
 228     json_object *json_obj;
 229     int ret = jh::inputJsonFilie(file_name.c_str(), &json_obj);
 230     if (0 > ret)
 231     {
 232         HMI_DEBUG("wm:lm", "Could not open area.db, so use default area information");
 233         json_obj = json_tokener_parse(kDefaultAreaDb);
 234     }
 235     HMI_DEBUG("wm:lm", "json_obj dump:%s", json_object_get_string(json_obj));
 236
 237     // Perse areas
 238     HMI_DEBUG("wm:lm", "Perse areas");
 239     json_object *json_cfg;
 240     if (!json_object_object_get_ex(json_obj, "areas", &json_cfg))
 241     {
 242         HMI_ERROR("wm:lm", "Parse Error!!");
 243         return -1;
 244     }
 245
 246     int len = json_object_array_length(json_cfg);
 247     HMI_DEBUG("wm:lm", "json_cfg len:%d", len);
 248     HMI_DEBUG("wm:lm", "json_cfg dump:%s", json_object_get_string(json_cfg));
 249
 250     const char *area;
 251     for (int i = 0; i < len; i++)
 252     {
 253         json_object *json_tmp = json_object_array_get_idx(json_cfg, i);
 254         HMI_DEBUG("wm:lm", "> json_tmp dump:%s", json_object_get_string(json_tmp));
 255
 256         area = jh::getStringFromJson(json_tmp, "name");
 257         if (nullptr == area)
 258         {
 259             HMI_ERROR("wm:lm", "Parse Error!!");
 260             return -1;
 261         }
 262         HMI_DEBUG("wm:lm", "> area:%s", area);
 263
 264         json_object *json_rect;
 265         if (!json_object_object_get_ex(json_tmp, "rect", &json_rect))
 266         {
 267             HMI_ERROR("wm:lm", "Parse Error!!");
 268             return -1;
 269         }
 270         HMI_DEBUG("wm:lm", "> json_rect dump:%s", json_object_get_string(json_rect));
 271
 272         compositor::rect area_size;
 273         area_size.x = jh::getIntFromJson(json_rect, "x");
 274         area_size.y = jh::getIntFromJson(json_rect, "y");
 275         area_size.w = jh::getIntFromJson(json_rect, "w");
 276         area_size.h = jh::getIntFromJson(json_rect, "h");
 277
 278         this->area2size[area] = area_size;
 279     }
 280
 281     // Check
 282     for (auto itr = this->area2size.begin();
 283          itr != this->area2size.end(); ++itr)
 284     {
 285         HMI_DEBUG("wm:lm", "area:%s x:%d y:%d w:%d h:%d",
 286                   itr->first.c_str(), itr->second.x, itr->second.y,
 287                   itr->second.w, itr->second.h);
 288     }
 289
 290     // Release json_object
 291     json_object_put(json_obj);
 292
 293     return 0;
 294 }
 295
 296 const char* layer_map::kDefaultAreaDb = "{ \
 297     \"areas\": [ \
 298         { \
 299             \"name\": \"fullscreen\", \
 300             \"rect\": { \
 301                 \"x\": 0, \
 302                 \"y\": 0, \
 303                 \"w\": 1080, \
 304                 \"h\": 1920 \
 305             } \
 306         }, \
 307         { \
 308             \"name\": \"normal.full\", \
 309             \"rect\": { \
 310                 \"x\": 0, \
 311                 \"y\": 218, \
 312                 \"w\": 1080, \
 313                 \"h\": 1488 \
 314             } \
 315         }, \
 316         { \
 317             \"name\": \"split.main\", \
 318             \"rect\": { \
 319                 \"x\": 0, \
 320                 \"y\": 218, \
 321                 \"w\": 1080, \
 322                 \"h\": 744 \
 323             } \
 324         }, \
 325         { \
 326             \"name\": \"split.sub\", \
 327             \"rect\": { \
 328                 \"x\": 0, \
 329                 \"y\": 962, \
 330                 \"w\": 1080, \
 331                 \"h\": 744 \
 332             } \
 333         }, \
 334         { \
 335             \"name\": \"software_keyboard\", \
 336             \"rect\": { \
 337                 \"x\": 0, \
 338                 \"y\": 962, \
 339                 \"w\": 1080, \
 340                 \"h\": 744 \
 341             } \
 342         }, \
 343         { \
 344             \"name\": \"restriction.normal\", \
 345             \"rect\": { \
 346                 \"x\": 0, \
 347                 \"y\": 218, \
 348                 \"w\": 1080, \
 349                 \"h\": 1488 \
 350             } \
 351         }, \
 352         { \
 353             \"name\": \"restriction.split.main\", \
 354             \"rect\": { \
 355                 \"x\": 0, \
 356                 \"y\": 218, \
 357                 \"w\": 1080, \
 358                 \"h\": 744 \
 359             } \
 360         }, \
 361         { \
 362             \"name\": \"restriction.split.sub\", \
 363             \"rect\": { \
 364                 \"x\": 0, \
 365                 \"y\": 962, \
 366                 \"w\": 1080, \
 367                 \"h\": 744 \
 368             } \
 369         }, \
 370         { \
 371             \"name\": \"on_screen\", \
 372             \"rect\": { \
 373                 \"x\": 0, \
 374                 \"y\": 218, \
 375                 \"w\": 1080, \
 376                 \"h\": 1488 \
 377             } \
 378         } \
 379     ] \
 380 }";
 381
 382 } // namespace wm