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 "hmi-debug.h"
  21
  22 namespace wm
  23 {
  24
  25 using json = nlohmann::json;
  26
  27 layer::layer(nlohmann::json const &j)
  28 {
  29       this->role = j["role"];
  30       this->name = j["name"];
  31       this->layer_id = j["layer_id"];
  32       this->rect = compositor::full_rect;
  33       if (j["area"]["type"] == "rect")
  34       {
  35             auto jr = j["area"]["rect"];
  36             this->rect = compositor::rect{
  37                 jr["width"],
  38                 jr["height"],
  39                 jr["x"],
  40                 jr["y"],
  41             };
  42       }
  43
  44       // Init flag of normal layout only
  45       this->is_normal_layout_only = true;
  46
  47       auto split_layouts = j.find("split_layouts");
  48       if (split_layouts != j.end())
  49       {
  50
  51             // Clear flag of normal layout only
  52             this->is_normal_layout_only = false;
  53
  54             auto &sls = j["split_layouts"];
  55             // this->layouts.reserve(sls.size());
  56             std::transform(std::cbegin(sls), std::cend(sls),
  57                            std::back_inserter(this->layouts), [this](json const &sl) {
  58                                  struct split_layout l
  59                                  {
  60                                        sl["name"], sl["main_match"], sl["sub_match"]
  61                                  };
  62                                  HMI_DEBUG("wm",
  63                                            "layer %d add split_layout \"%s\" (main: \"%s\") (sub: "
  64                                            "\"%s\")",
  65                                            this->layer_id,
  66                                            l.name.c_str(), l.main_match.c_str(),
  67                                            l.sub_match.c_str());
  68                                  return l;
  69                            });
  70       }
  71       HMI_DEBUG("wm", "layer_id:%d is_normal_layout_only:%d\n",
  72                 this->layer_id, this->is_normal_layout_only);
  73 }
  74
  75 struct result<struct layer_map> to_layer_map(nlohmann::json const &j)
  76 {
  77       try
  78       {
  79             layer_map stl{};
  80             auto m = j["mappings"];
  81
  82             std::transform(std::cbegin(m), std::cend(m),
  83                            std::inserter(stl.mapping, stl.mapping.end()),
  84                            [](nlohmann::json const &j) {
  85                                  return std::pair<int, struct layer>(
  86                                      j.value("layer_id", -1), layer(j));
  87                            });
  88
  89             // TODO: add sanity checks here?
  90             // * check for double IDs
  91             // * check for double names/roles
  92
  93             stl.layers.reserve(m.size());
  94             std::transform(std::cbegin(stl.mapping), std::cend(stl.mapping),
  95                            std::back_inserter(stl.layers),
  96                            [&stl](std::pair<int, struct layer> const &k) {
  97                                  stl.roles.emplace_back(
  98                                      std::make_pair(k.second.role, k.second.layer_id));
  99                                  return unsigned(k.second.layer_id);
 100                            });
 101
 102             std::sort(stl.layers.begin(), stl.layers.end());
 103
 104             for (auto i : stl.mapping)
 105             {
 106                   if (i.second.name.empty())
 107                   {
 108                         return Err<struct layer_map>("Found mapping w/o name");
 109                   }
 110                   if (i.second.layer_id == -1)
 111                   {
 112                         return Err<struct layer_map>("Found invalid/unset IDs in mapping");
 113                   }
 114             }
 115
 116             auto msi = j.find("main_surface");
 117             if (msi != j.end())
 118             {
 119                   stl.main_surface_name = msi->value("surface_role", "");
 120                   stl.main_surface = -1;
 121             }
 122
 123             return Ok(stl);
 124       }
 125       catch (std::exception &e)
 126       {
 127             return Err<struct layer_map>(e.what());
 128       }
 129 }
 130
 131 optional<int>
 132 layer_map::get_layer_id(int surface_id)
 133 {
 134       auto i = this->surfaces.find(surface_id);
 135       if (i != this->surfaces.end())
 136       {
 137             return optional<int>(i->second);
 138       }
 139       return nullopt;
 140 }
 141
 142 optional<int> layer_map::get_layer_id(std::string const &role)
 143 {
 144       for (auto const &r : this->roles)
 145       {
 146             auto re = std::regex(r.first);
 147             if (std::regex_match(role, re))
 148             {
 149                   HMI_DEBUG("wm", "role %s matches layer %d", role.c_str(), r.second);
 150                   return optional<int>(r.second);
 151             }
 152       }
 153       HMI_DEBUG("wm", "role %s does NOT match any layer", role.c_str());
 154       return nullopt;
 155 }
 156
 157 json layer::to_json() const
 158 {
 159       auto is_full = this->rect == compositor::full_rect;
 160
 161       json r{};
 162       if (is_full)
 163       {
 164             r = {{"type", "full"}};
 165       }
 166       else
 167       {
 168             r = {{"type", "rect"},
 169                  {"rect",
 170                   {{"x", this->rect.x},
 171                    {"y", this->rect.y},
 172                    {"width", this->rect.w},
 173                    {"height", this->rect.h}}}};
 174       }
 175
 176       return {
 177           {"name", this->name},
 178           {"role", this->role},
 179           {"layer_id", this->layer_id},
 180           {"area", r},
 181       };
 182 }
 183
 184 json layer_map::to_json() const
 185 {
 186       json j{};
 187       for (auto const &i : this->mapping)
 188       {
 189             j.push_back(i.second.to_json());
 190       }
 191       return j;
 192 }
 193
 194 void layer_map::setupArea(int output_w, int output_h)
 195 {
 196     compositor::rect rct;
 197     // setup normal.full
 198     std::string area = "normal.full";
 199     std::string role = "Fallback";
 200     auto l_id = this->get_layer_id(role);
 201     auto l = this->get_layer(*l_id);
 202     rct = l->rect;
 203     if(rct.w < 0)
 204         rct.w = output_w + 1 + rct.w;
 205     if(rct.h < 0)
 206         rct.h = output_h + 1 + rct.h;
 207     this->area2size[area] = rct;
 208     this->area2size["normalfull"] = rct;
 209
 210     // setup split.main
 211     area = "split.main";
 212     rct.h = rct.h / 2;
 213     this->area2size[area] = rct;
 214
 215     // setup split.sub
 216     area = "split.sub";
 217     rct.y = rct.y + rct.h;
 218     this->area2size[area] = rct;
 219
 220     // setup homescreen
 221     area = "fullscreen";
 222     role = "HomeScreen";
 223     rct = compositor::full_rect;
 224     if (rct.w <= 0)
 225         rct.w = output_w + rct.w + 1;
 226     if (rct.h <= 0)
 227         rct.h = output_h + rct.h + 1;
 228     this->area2size[area] = rct;
 229
 230     // setup onscreen
 231     area = "onscreen";
 232     role = "OnScreen";
 233     auto ons_id = this->get_layer_id(role);
 234     auto l_ons = this->get_layer(*ons_id);
 235     rct = l_ons->rect;
 236     if (rct.w < 0)
 237         rct.w = output_w + 1 + rct.w;
 238     if (rct.h < 0)
 239         rct.h = output_h + 1 + rct.h;
 240     this->area2size[area] = rct;
 241 }
 242
 243 compositor::rect layer_map::getAreaSize(const std::string &area)
 244 {
 245     return area2size[area];
 246 }
 247
 248 } // namespace wm