layers: add layer and layer_map to_json() helper

Signed-off-by: Marcus Fritzsch <marcus_fritzsch@mentor.com>

2 files changed, 41 insertions, 1 deletions

diff --git a/src/layers.cpp b/src/layers.cpp
index 1e44a1b..abf8303 100644
--- a/src/layers.cpp
+++ b/src/layers.cpp
@@ -22,7 +22,7 @@ layer::layer(nlohmann::json const &j) {
    }
    this->name = j["name"].get<std::string>();
    this->layer_id = get<int>(j["layer_id"]);
-   this->rect = genivi::rect{-1, -1, 0, 0};
+   this->rect = genivi::full_rect;
    if (j["area"]["type"] == "rect") {
       auto jr = j["area"]["rect"];
       this->rect = genivi::rect{
@@ -119,4 +119,36 @@ optional<genivi::rect> layer_map::get_layer_rect(int surface_id) {
    return e ? optional<genivi::rect>(e->rect) : nullopt;
 }
 
+json layer::to_json() const {
+   auto is_full = this->rect == genivi::full_rect;
+
+   json r{};
+   if (is_full) {
+      r = {{"type", "full"}};
+   } else {
+      r = {{"type", "rect"},
+           {"rect",
+            {{"x", this->rect.x},
+             {"y", this->rect.y},
+             {"width", this->rect.w},
+             {"height", this->rect.h}}}};
+   }
+
+   return {
+      {"id_min", this->id_min},
+      {"id_max", this->id_max},
+      {"name", this->name},
+      {"layer_id", this->layer_id},
+      {"area", r},
+   };
+}
+
+json layer_map::to_json() const {
+   json j{};
+   for (auto const &i: this->mapping) {
+      j.push_back(i.to_json());
+   }
+   return j;
+}
+
 }  // namespace wm
diff --git a/src/layers.hpp b/src/layers.hpp
index e2d2bf5..a775f7a 100644
--- a/src/layers.hpp
+++ b/src/layers.hpp
@@ -15,6 +15,8 @@
 namespace wm {
 
 struct layer {
+   using json = nlohmann::json;
+
    // Min and max surface ID mapped to this layer
    int id_min = -1;
    int id_max = -1;
@@ -36,11 +38,15 @@ struct layer {
    bool operator<(struct layer const &rhs) const {
       return this->id_max < rhs.id_max;
    }
+
+   json to_json() const;
 };
 
 // Actually, we shouldn't need a struct here ... but let's just keep it at that
 // for now, to contain its mapping type and the _single_ useful method.
 struct layer_map {
+   using json = nlohmann::json;
+
    typedef std::set<struct layer> storage_type;
    typedef std::vector<unsigned int> layers_type;
 
@@ -52,6 +58,8 @@ struct layer_map {
    layers_type::size_type get_layers_count() const {
       return this->layers.size();
    }
+
+   json to_json() const;
 };
 
 struct result<struct layer_map> to_layer_map(nlohmann::json const &j);