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-rw-r--r--src/layers.cpp154
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diff --git a/src/layers.cpp b/src/layers.cpp
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+/*
+ * Copyright (C) 2017 Mentor Graphics Development (Deutschland) GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <algorithm>
+#include <regex>
+
+#include "json_helper.hpp"
+#include "layers.hpp"
+#include "util.hpp"
+
+namespace wm {
+
+using json = nlohmann::json;
+
+layer::layer(nlohmann::json const &j) {
+ this->role = j["role"];
+ this->name = j["name"];
+ this->layer_id = j["layer_id"];
+ this->rect = genivi::full_rect;
+ if (j["area"]["type"] == "rect") {
+ auto jr = j["area"]["rect"];
+ this->rect = genivi::rect{
+ jr["width"], jr["height"], jr["x"], jr["y"],
+ };
+ }
+ auto split_layouts = j.find("split_layouts");
+ if (split_layouts != j.end()) {
+ auto &sls = j["split_layouts"];
+ // this->layouts.reserve(sls.size());
+ std::transform(std::cbegin(sls), std::cend(sls),
+ std::back_inserter(this->layouts), [this](json const &sl) {
+ struct split_layout l {
+ sl["name"], sl["main_match"], sl["sub_match"] };
+ logdebug(
+ "layer %d add split_layout \"%s\" (main: \"%s\") (sub: "
+ "\"%s\")", this->layer_id,
+ l.name.c_str(), l.main_match.c_str(),
+ l.sub_match.c_str());
+ return l;
+ });
+ }
+}
+
+struct result<struct layer_map> to_layer_map(nlohmann::json const &j) {
+ try {
+ layer_map stl{};
+ auto m = j["mappings"];
+
+ std::transform(std::cbegin(m), std::cend(m),
+ std::inserter(stl.mapping, stl.mapping.end()),
+ [](nlohmann::json const &j) {
+ return std::pair<int, struct layer>(
+ j.value("layer_id", -1), layer(j));
+ });
+
+ // XXX: add sanity checks here?
+ // * check for double IDs
+ // * check for double names/roles
+
+ stl.layers.reserve(m.size());
+ std::transform(std::cbegin(stl.mapping), std::cend(stl.mapping),
+ std::back_inserter(stl.layers),
+ [&stl](std::pair<int, struct layer> const &k) {
+ stl.roles.emplace_back(
+ std::make_pair(k.second.role, k.second.layer_id));
+ return unsigned(k.second.layer_id);
+ });
+
+ std::sort(stl.layers.begin(), stl.layers.end());
+
+ for (auto i : stl.mapping) {
+ if (i.second.name.empty()) {
+ return Err<struct layer_map>("Found mapping w/o name");
+ }
+ if (i.second.layer_id == -1) {
+ return Err<struct layer_map>("Found invalid/unset IDs in mapping");
+ }
+ }
+
+ auto msi = j.find("main_surface");
+ if (msi != j.end()) {
+ stl.main_surface_name = msi->value("surface_role", "");
+ stl.main_surface = -1;
+ }
+
+ return Ok(stl);
+ } catch (std::exception &e) {
+ return Err<struct layer_map>(e.what());
+ }
+}
+
+optional<int> layer_map::get_layer_id(int surface_id) {
+ auto i = this->surfaces.find(surface_id);
+ if (i != this->surfaces.end()) {
+ return optional<int>(i->second);
+ }
+ return nullopt;
+}
+
+optional<int> layer_map::get_layer_id(std::string const &role) {
+ for (auto const &r : this->roles) {
+ auto re = std::regex(r.first);
+ if (std::regex_match(role, re)) {
+ logdebug("role %s matches layer %d", role.c_str(), r.second);
+ return optional<int>(r.second);
+ }
+ }
+ logdebug("role %s does NOT match any layer", role.c_str());
+ return 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 {
+ {"name", this->name}, {"role", this->role},
+ {"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.second.to_json());
+ }
+ return j;
+}
+
+} // namespace wm