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     this->area2size["normal"] = rct;
 210
 211     // setup split.main
 212     area = "split.main";
 213     rct.h = rct.h / 2;
 214     this->area2size[area] = rct;
 215
 216     // setup split.sub
 217     area = "split.sub";
 218     rct.y = rct.y + rct.h;
 219     this->area2size[area] = rct;
 220
 221     // setup homescreen
 222     area = "fullscreen";
 223     role = "homescreen";
 224     rct = compositor::full_rect;
 225     if (rct.w <= 0)
 226         rct.w = output_w + rct.w + 1;
 227     if (rct.h <= 0)
 228         rct.h = output_h + rct.h + 1;
 229     this->area2size[area] = rct;
 230
 231     // setup onscreen
 232     area = "on_screen";
 233     role = "on_screen";
 234     auto ons_id = this->get_layer_id(role);
 235     auto l_ons = this->get_layer(*ons_id);
 236     rct = l_ons->rect;
 237     if (rct.w < 0)
 238         rct.w = output_w + 1 + rct.w;
 239     if (rct.h < 0)
 240         rct.h = output_h + 1 + rct.h;
 241     this->area2size[area] = rct;
 242 }
 243
 244 compositor::rect layer_map::getAreaSize(const std::string &area)
 245 {
 246     return area2size[area];
 247 }
 248
 249 } // namespace wm