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 <algorithm>
  18 #include <regex>
  19
  20 #include "json_helper.hpp"
  21 #include "layers.hpp"
  22 #include "util.hpp"
  23 #include "hmi-debug.h"
  24
  25 namespace wm
  26 {
  27
  28 using json = nlohmann::json;
  29
  30 layer::layer(nlohmann::json const &j)
  31 {
  32       this->role = j["role"];
  33       this->name = j["name"];
  34       this->layer_id = j["layer_id"];
  35       this->rect = compositor::full_rect;
  36       if (j["area"]["type"] == "rect")
  37       {
  38             auto jr = j["area"]["rect"];
  39             this->rect = compositor::rect{
  40                 jr["width"],
  41                 jr["height"],
  42                 jr["x"],
  43                 jr["y"],
  44             };
  45       }
  46
  47       // Init flag of normal layout only
  48       this->is_normal_layout_only = true;
  49
  50       auto split_layouts = j.find("split_layouts");
  51       if (split_layouts != j.end())
  52       {
  53
  54             // Clear flag of normal layout only
  55             this->is_normal_layout_only = false;
  56
  57             auto &sls = j["split_layouts"];
  58             // this->layouts.reserve(sls.size());
  59             std::transform(std::cbegin(sls), std::cend(sls),
  60                            std::back_inserter(this->layouts), [this](json const &sl) {
  61                                  struct split_layout l
  62                                  {
  63                                        sl["name"], sl["main_match"], sl["sub_match"]
  64                                  };
  65                                  HMI_DEBUG("wm",
  66                                            "layer %d add split_layout \"%s\" (main: \"%s\") (sub: "
  67                                            "\"%s\")",
  68                                            this->layer_id,
  69                                            l.name.c_str(), l.main_match.c_str(),
  70                                            l.sub_match.c_str());
  71                                  return l;
  72                            });
  73       }
  74       HMI_DEBUG("wm", "layer_id:%d is_normal_layout_only:%d\n",
  75                 this->layer_id, this->is_normal_layout_only);
  76 }
  77
  78 struct result<struct layer_map> to_layer_map(nlohmann::json const &j)
  79 {
  80       try
  81       {
  82             layer_map stl{};
  83             auto m = j["mappings"];
  84
  85             std::transform(std::cbegin(m), std::cend(m),
  86                            std::inserter(stl.mapping, stl.mapping.end()),
  87                            [](nlohmann::json const &j) {
  88                                  return std::pair<int, struct layer>(
  89                                      j.value("layer_id", -1), layer(j));
  90                            });
  91
  92             // TODO: add sanity checks here?
  93             // * check for double IDs
  94             // * check for double names/roles
  95
  96             stl.layers.reserve(m.size());
  97             std::transform(std::cbegin(stl.mapping), std::cend(stl.mapping),
  98                            std::back_inserter(stl.layers),
  99                            [&stl](std::pair<int, struct layer> const &k) {
 100                                  stl.roles.emplace_back(
 101                                      std::make_pair(k.second.role, k.second.layer_id));
 102                                  return unsigned(k.second.layer_id);
 103                            });
 104
 105             std::sort(stl.layers.begin(), stl.layers.end());
 106
 107             for (auto i : stl.mapping)
 108             {
 109                   if (i.second.name.empty())
 110                   {
 111                         return Err<struct layer_map>("Found mapping w/o name");
 112                   }
 113                   if (i.second.layer_id == -1)
 114                   {
 115                         return Err<struct layer_map>("Found invalid/unset IDs in mapping");
 116                   }
 117             }
 118
 119             auto msi = j.find("main_surface");
 120             if (msi != j.end())
 121             {
 122                   stl.main_surface_name = msi->value("surface_role", "");
 123                   stl.main_surface = -1;
 124             }
 125
 126             return Ok(stl);
 127       }
 128       catch (std::exception &e)
 129       {
 130             return Err<struct layer_map>(e.what());
 131       }
 132 }
 133
 134 optional<int>
 135 layer_map::get_layer_id(int surface_id)
 136 {
 137       auto i = this->surfaces.find(surface_id);
 138       if (i != this->surfaces.end())
 139       {
 140             return optional<int>(i->second);
 141       }
 142       return nullopt;
 143 }
 144
 145 optional<int> layer_map::get_layer_id(std::string const &role)
 146 {
 147       for (auto const &r : this->roles)
 148       {
 149             auto re = std::regex(r.first);
 150             if (std::regex_match(role, re))
 151             {
 152                   HMI_DEBUG("wm", "role %s matches layer %d", role.c_str(), r.second);
 153                   return optional<int>(r.second);
 154             }
 155       }
 156       HMI_DEBUG("wm", "role %s does NOT match any layer", role.c_str());
 157       return nullopt;
 158 }
 159
 160 json layer::to_json() const
 161 {
 162       auto is_full = this->rect == compositor::full_rect;
 163
 164       json r{};
 165       if (is_full)
 166       {
 167             r = {{"type", "full"}};
 168       }
 169       else
 170       {
 171             r = {{"type", "rect"},
 172                  {"rect",
 173                   {{"x", this->rect.x},
 174                    {"y", this->rect.y},
 175                    {"width", this->rect.w},
 176                    {"height", this->rect.h}}}};
 177       }
 178
 179       return {
 180           {"name", this->name},
 181           {"role", this->role},
 182           {"layer_id", this->layer_id},
 183           {"area", r},
 184       };
 185 }
 186
 187 json layer_map::to_json() const
 188 {
 189       json j{};
 190       for (auto const &i : this->mapping)
 191       {
 192             j.push_back(i.second.to_json());
 193       }
 194       return j;
 195 }
 196
 197 } // namespace wm