Add agl-service-windowmanager-2017

    Add a new binding agl-service-windowmanager-2017.
    A image about this see JIRA SPEC-915.

    [PatchSet2]
    Use aglwgt make package.

    [PatchSet3]
    Modify to wait until wayland compositor starts up.
    Bug-AGL: SPEC-925

Change-Id: I8729bb71b5e91d5b009a5bab77232d92605c43ea
Signed-off-by: zheng_wenlong <wenlong_zheng@nexty-ele.com>

1 files changed, 733 insertions, 0 deletions

diff --git a/src/app.cpp b/src/app.cpp
new file mode 100644
index 0000000..75df8d7
--- /dev/null
+++ b/src/app.cpp
@@ -0,0 +1,733 @@
+/*
+ * 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 "app.hpp"
+#include "json_helper.hpp"
+#include "layers.hpp"
+#include "layout.hpp"
+#include "util.hpp"
+#include "wayland.hpp"
+
+#include <cstdio>
+#include <memory>
+
+#include <cassert>
+
+#include <json-c/json.h>
+
+#include <algorithm>
+#include <bits/signum.h>
+#include <csignal>
+#include <fstream>
+#include <json.hpp>
+#include <regex>
+#include <thread>
+
+namespace wm {
+
+namespace {
+
+using nlohmann::json;
+
+result<json> file_to_json(char const *filename) {
+   std::ifstream i(filename);
+   if (i.fail()) {
+      return Err<json>("Could not open config file");
+   }
+   json j;
+   i >> j;
+   return Ok(j);
+}
+
+struct result<layer_map> load_layer_map(char const *filename) {
+   logdebug("loading IDs from %s", filename);
+
+   auto j = file_to_json(filename);
+   if (j.is_err()) {
+      return Err<layer_map>(j.unwrap_err());
+   }
+   json jids = j.unwrap();
+
+   return to_layer_map(jids);
+}
+
+}  // namespace
+
+//       _                    _                  _                 _
+//   ___| | __ _ ___ ___     / \   _ __  _ __   (_)_ __ ___  _ __ | |
+//  / __| |/ _` / __/ __|   / _ \ | '_ \| '_ \  | | '_ ` _ \| '_ \| |
+// | (__| | (_| \__ \__ \  / ___ \| |_) | |_) | | | | | | | | |_) | |
+//  \___|_|\__,_|___/___/ /_/   \_\ .__/| .__/  |_|_| |_| |_| .__/|_|
+//                                |_|   |_|                 |_|
+App::App(wl::display *d)
+   : api{this},
+     chooks{this},
+     display{d},
+     controller{},
+     outputs(),
+     config(),
+     layers(),
+     id_alloc{},
+     pending_events(false),
+     policy{} {
+   try {
+      {
+         auto l = load_layer_map(
+            this->config.get_string("layers.json").value().c_str());
+         if (l.is_ok()) {
+            this->layers = l.unwrap();
+         } else {
+            logerror("%s", l.err().value());
+         }
+      }
+   } catch (std::exception &e) {
+      logerror("Loading of configuration failed: %s", e.what());
+   }
+}
+
+int App::init() {
+   if (!this->display->ok()) {
+      return -1;
+   }
+
+   if (this->layers.mapping.empty()) {
+      logerror("No surface -> layer mapping loaded");
+      return -1;
+   }
+
+   this->display->add_global_handler(
+      "wl_output", [this](wl_registry *r, uint32_t name, uint32_t v) {
+         this->outputs.emplace_back(std::make_unique<wl::output>(r, name, v));
+      });
+
+   this->display->add_global_handler(
+      "ivi_controller", [this](wl_registry *r, uint32_t name, uint32_t v) {
+         this->controller =
+            std::make_unique<struct genivi::controller>(r, name, v);
+
+         // Init controller hooks
+         this->controller->chooks = &this->chooks;
+
+         // XXX: This protocol needs the output, so lets just add our mapping
+         // here...
+         this->controller->add_proxy_to_id_mapping(
+            this->outputs.back()->proxy.get(),
+            wl_proxy_get_id(reinterpret_cast<struct wl_proxy *>(
+               this->outputs.back()->proxy.get())));
+      });
+
+   // First level objects
+   this->display->roundtrip();
+   // Second level objects
+   this->display->roundtrip();
+   // Third level objects
+   this->display->roundtrip();
+
+   return init_layers();
+}
+
+int App::dispatch_events() {
+   if (this->dispatch_events() == 0) {
+      return 0;
+   }
+
+   int ret = this->display->dispatch();
+   if (ret == -1) {
+      logerror("wl_display_dipatch() returned error %d",
+               this->display->get_error());
+      return -1;
+   }
+   this->display->flush();
+
+   return 0;
+}
+
+int App::dispatch_pending_events() {
+   if (this->pop_pending_events()) {
+      this->display->dispatch_pending();
+   return 0;
+}
+   return -1;
+}
+
+bool App::pop_pending_events() {
+   bool x{true};
+   return this->pending_events.compare_exchange_strong(
+      x, false, std::memory_order_consume);
+}
+
+void App::set_pending_events() {
+   this->pending_events.store(true, std::memory_order_release);
+}
+
+optional<int> App::lookup_id(char const *name) {
+   return this->id_alloc.lookup(std::string(name));
+}
+optional<std::string> App::lookup_name(int id) {
+   return this->id_alloc.lookup(id);
+}
+
+//  _       _ _       _                         _    ____
+// (_)_ __ (_) |_    | | __ _ _   _  ___  _   _| |_ / /\ \
+// | | '_ \| | __|   | |/ _` | | | |/ _ \| | | | __| |  | |
+// | | | | | | |_    | | (_| | |_| | (_) | |_| | |_| |  | |
+// |_|_| |_|_|\__|___|_|\__,_|\__, |\___/ \__,_|\__| |  | |
+//              |_____|       |___/                 \_\/_/
+int App::init_layers() {
+   if (!this->controller) {
+      logerror("ivi_controller global not available");
+      return -1;
+   }
+
+   if (this->outputs.empty()) {
+      logerror("no output was set up!");
+      return -1;
+   }
+
+   auto &c = this->controller;
+
+   auto &o = this->outputs.front();
+   auto &s = c->screens.begin()->second;
+   auto &layers = c->layers;
+
+   // XXX: Write output dimensions to ivi controller...
+   c->output_size = genivi::size{uint32_t(o->width), uint32_t(o->height)};
+
+   // Clear scene
+   layers.clear();
+
+   // Clear screen
+   s->clear();
+
+   // Quick and dirty setup of layers
+   // XXX: This likely needs to be sorted by order (note, we don't (yet?)
+   // do any zorder arrangement).
+   for (auto const &i : this->layers.mapping) {
+      c->layer_create(i.second.layer_id, o->width, o->height);
+      auto &l = layers[i.second.layer_id];
+      l->set_destination_rectangle(0, 0, o->width, o->height);
+      l->set_visibility(1);
+      logdebug("Setting up layer %s (%d) for surface role match \"%s\"",
+               i.second.name.c_str(), i.second.layer_id, i.second.role.c_str());
+   }
+
+   // Add layers to screen (XXX: are they sorted correctly?)
+   s->set_render_order(this->layers.layers);
+
+   this->layout_commit();
+
+   return 0;
+}
+
+void App::surface_set_layout(int surface_id, optional<int> sub_surface_id) {
+   if (!this->controller->surface_exists(surface_id)) {
+      logerror("Surface %d does not exist", surface_id);
+      return;
+   }
+
+   auto o_layer_id = this->layers.get_layer_id(surface_id);
+
+   if (!o_layer_id) {
+      logerror("Surface %d is not associated with any layer!", surface_id);
+      return;
+   }
+
+   uint32_t layer_id = *o_layer_id;
+
+   auto const &layer = this->layers.get_layer(layer_id);
+   auto rect = layer.value().rect;
+   auto &s = this->controller->surfaces[surface_id];
+
+   int x = rect.x;
+   int y = rect.y;
+   int w = rect.w;
+   int h = rect.h;
+
+   // less-than-0 values refer to MAX + 1 - $VALUE
+   // e.g. MAX is either screen width or height
+   if (w < 0) {
+      w = this->controller->output_size.w + 1 + w;
+   }
+   if (h < 0) {
+      h = this->controller->output_size.h + 1 + h;
+   }
+
+   if (sub_surface_id) {
+      if (o_layer_id != this->layers.get_layer_id(*sub_surface_id)) {
+         logerror(
+            "surface_set_layout: layers of surfaces (%d and %d) don't match!",
+            surface_id, *sub_surface_id);
+         return;
+      }
+
+      int x_off = 0;
+      int y_off = 0;
+
+      // split along major axis
+      if (w > h) {
+         w /= 2;
+         x_off = w;
+      } else {
+         h /= 2;
+         y_off = h;
+      }
+
+      auto &ss = this->controller->surfaces[*sub_surface_id];
+
+      logdebug("surface_set_layout for sub surface %u on layer %u",
+               *sub_surface_id, layer_id);
+
+   // configure surface to wxh dimensions
+      ss->set_configuration(w, h);
+      // set source reactangle, even if we should not need to set it.
+      ss->set_source_rectangle(0, 0, w, h);
+      // set destination to the display rectangle
+      ss->set_destination_rectangle(x + x_off, y + y_off, w, h);
+   }
+
+   logdebug("surface_set_layout for surface %u on layer %u", surface_id,
+            layer_id);
+
+   // configure surface to wxh dimensions
+   s->set_configuration(w, h);
+   // set source reactangle, even if we should not need to set it.
+   s->set_source_rectangle(0, 0, w, h);
+
+   // set destination to the display rectangle
+   s->set_destination_rectangle(x, y, w, h);
+
+   logdebug("Surface %u now on layer %u with rect { %d, %d, %d, %d }",
+            surface_id, layer_id, x, y, w, h);
+}
+
+void App::layout_commit() {
+   this->controller->commit_changes();
+   this->display->flush();
+}
+
+char const *App::api_activate_surface(char const *drawing_name) {
+   ST();
+   auto const &surface_id = this->lookup_id(drawing_name);
+
+   if (!surface_id) {
+      return "Surface does not exist";
+   }
+
+   if (!this->controller->surface_exists(*surface_id)) {
+      return "Surface does not exist in controller!";
+   }
+
+   auto layer_id = this->layers.get_layer_id(*surface_id);
+
+   if (!layer_id) {
+      return "Surface is not on any layer!";
+   }
+
+   auto o_state = *this->layers.get_layout_state(*surface_id);
+
+   if (o_state == nullptr) {
+      return "Could not find layer for surface";
+}
+
+   struct LayoutState &state = *o_state;
+
+   // disable layers that are above our current layer
+   for (auto const &l : this->layers.mapping) {
+      if (l.second.layer_id <= *layer_id) {
+         continue;
+      }
+
+      bool flush = false;
+      if (l.second.state.main != -1) {
+         this->deactivate(l.second.state.main);
+         l.second.state.main = -1;
+         flush = true;
+   }
+
+      if (l.second.state.sub != -1) {
+         this->deactivate(l.second.state.sub);
+         l.second.state.sub = -1;
+         flush = true;
+   }
+
+      if (flush) {
+         this->layout_commit();
+      }
+   }
+
+   if (state.main == *surface_id || state.sub == *surface_id) {
+      return "Surface already active";
+   }
+
+   if (state.main == -1) {
+      this->try_layout(
+         state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
+            this->surface_set_layout(*surface_id);
+            // XXX do we need to activate after enddraw?
+            state = nl;
+            this->emit_syncdraw(drawing_name);
+            this->enqueue_flushdraw(state.main);
+         });
+   } else {
+      bool can_split = this->can_split(state, *surface_id);
+
+         if (can_split) {
+            this->try_layout(
+               state,
+               LayoutState{state.main, *surface_id},
+               [&] (LayoutState const &nl) {
+                  std::string main =
+                     std::move(*this->lookup_name(state.main));
+
+                  this->surface_set_layout(state.main, surface_id);
+                  if (state.sub != -1) {
+                     this->deactivate(state.sub);
+      }
+                  state = nl;
+
+                  this->emit_syncdraw(drawing_name);
+                  this->emit_syncdraw(main.c_str());
+                  this->enqueue_flushdraw(state.main);
+                  this->enqueue_flushdraw(state.sub);
+               });
+         } else {
+            this->try_layout(
+               state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
+                  this->surface_set_layout(*surface_id);
+                  this->deactivate(state.main);
+                  if (state.sub != -1) {
+                     this->deactivate(state.sub);
+   }
+                  state = nl;
+
+                  this->emit_syncdraw(drawing_name);
+                  this->enqueue_flushdraw(state.main);
+               });
+         }
+   }
+
+   // no error
+   return nullptr;
+}
+
+char const *App::api_deactivate_surface(char const *drawing_name) {
+   ST();
+   auto const &surface_id = this->lookup_id(drawing_name);
+
+   if (!surface_id) {
+         return "Surface does not exist";
+      }
+
+   if (*surface_id == this->layers.main_surface) {
+      return "Cannot deactivate main_surface";
+   }
+
+   auto o_state = *this->layers.get_layout_state(*surface_id);
+
+   if (o_state == nullptr) {
+      return "Could not find layer for surface";
+   }
+
+   struct LayoutState &state = *o_state;
+
+   if (state.main == -1) {
+      return "No surface active";
+   }
+
+   // XXX: check against main_surface, main_surface_name is the configuration
+   // item.
+   if (*surface_id == this->layers.main_surface) {
+      logdebug("Refusing to deactivate main_surface %d", *surface_id);
+      return nullptr;
+   }
+
+   if (state.main == *surface_id) {
+      if (state.sub != -1) {
+         this->try_layout(
+            state, LayoutState{state.sub, -1}, [&] (LayoutState const &nl) {
+               std::string sub = std::move(*this->lookup_name(state.sub));
+
+               this->deactivate(*surface_id);
+               this->surface_set_layout(state.sub);
+               state = nl;
+
+               this->layout_commit();
+               this->emit_syncdraw(sub.c_str());
+               this->enqueue_flushdraw(state.sub);
+            });
+      } else {
+         this->try_layout(state, LayoutState{-1, -1}, [&] (LayoutState const &nl) {
+            this->deactivate(*surface_id);
+            state = nl;
+            this->layout_commit();
+         });
+      }
+   } else if (state.sub == *surface_id) {
+      this->try_layout(
+         state, LayoutState{state.main, -1}, [&] (LayoutState const &nl) {
+            std::string main = std::move(*this->lookup_name(state.main));
+
+            this->deactivate(*surface_id);
+            this->surface_set_layout(state.main);
+            state = nl;
+
+            this->layout_commit();
+            this->emit_syncdraw(main.c_str());
+            this->enqueue_flushdraw(state.main);
+         });
+   } else {
+      return "Surface is not active";
+   }
+
+   return nullptr;
+}
+
+void App::enqueue_flushdraw(int surface_id) {
+   this->check_flushdraw(surface_id);
+   logdebug("Enqueuing EndDraw for surface_id %d", surface_id);
+   this->pending_end_draw.push_back(surface_id);
+}
+
+void App::check_flushdraw(int surface_id) {
+   auto i = std::find(std::begin(this->pending_end_draw),
+                      std::end(this->pending_end_draw), surface_id);
+   if (i != std::end(this->pending_end_draw)) {
+      auto n = this->lookup_name(surface_id);
+      logerror("Application %s (%d) has pending EndDraw call(s)!",
+               n ? n->c_str() : "unknown-name", surface_id);
+      std::swap(this->pending_end_draw[std::distance(
+                   std::begin(this->pending_end_draw), i)],
+                this->pending_end_draw.back());
+      this->pending_end_draw.resize(this->pending_end_draw.size() - 1);
+   }
+}
+
+char const *App::api_enddraw(char const *drawing_name) {
+   for (unsigned i = 0, iend = this->pending_end_draw.size(); i < iend; i++) {
+      auto n = this->lookup_name(this->pending_end_draw[i]);
+      if (n && *n == drawing_name) {
+         std::swap(this->pending_end_draw[i], this->pending_end_draw[iend - 1]);
+         this->pending_end_draw.resize(iend - 1);
+         // XXX: Please tell the compositor to thaw the surface...
+         this->activate(this->pending_end_draw[i]);
+         this->layout_commit();
+         this->emit_flushdraw(drawing_name);
+         return nullptr;
+      }
+   }
+   return "No EndDraw pending for surface";
+}
+
+void App::api_ping() { this->dispatch_pending_events(); }
+
+//                      _          _   _____                 _
+//  _ __  _ __ _____  _(_) ___  __| | | ____|_   _____ _ __ | |_ ___
+// | '_ \| '__/ _ \ \/ / |/ _ \/ _` | |  _| \ \ / / _ \ '_ \| __/ __|
+// | |_) | | | (_) >  <| |  __/ (_| | | |___ \ V /  __/ | | | |_\__ \
+// | .__/|_|  \___/_/\_\_|\___|\__,_| |_____| \_/ \___|_| |_|\__|___/
+// |_|
+void App::surface_created(uint32_t surface_id) {
+   auto layer_id = this->layers.get_layer_id(surface_id);
+   if (!layer_id) {
+      logdebug("Newly created surfce %d is not associated with any layer!",
+               surface_id);
+      return;
+   }
+
+   logdebug("surface_id is %u, layer_id is %u", surface_id, *layer_id);
+
+   this->controller->layers[*layer_id]->add_surface(
+      this->controller->surfaces[surface_id].get());
+
+   // activate the main_surface right away
+   /*if (surface_id == static_cast<unsigned>(this->layers.main_surface)) {
+      logdebug("Activating main_surface (%d)", surface_id);
+
+      this->api_activate_surface(
+         this->lookup_name(surface_id).value_or("unknown-name").c_str());
+   }*/
+}
+
+void App::surface_removed(uint32_t surface_id) {
+   logdebug("surface_id is %u", surface_id);
+
+   // We cannot normally deactivate the main_surface, so be explicit
+   // about it:
+   if (int(surface_id) == this->layers.main_surface) {
+      this->deactivate_main_surface();
+   } else {
+      auto drawing_name = this->lookup_name(surface_id);
+      if (drawing_name) {
+         this->api_deactivate_surface(drawing_name->c_str());
+      }
+   }
+
+   this->id_alloc.remove_id(surface_id);
+   this->layers.remove_surface(surface_id);
+}
+
+void App::emit_activated(char const *label) {
+   this->api.send_event("active", label);
+}
+
+void App::emit_deactivated(char const *label) {
+   this->api.send_event("inactive", label);
+}
+
+void App::emit_syncdraw(char const *label) {
+   this->api.send_event("syncdraw", label);
+}
+
+void App::emit_flushdraw(char const *label) {
+   this->api.send_event("flushdraw", label);
+}
+
+void App::emit_visible(char const *label, bool is_visible) {
+   this->api.send_event(is_visible ? "visible" : "invisible", label);
+}
+
+void App::emit_invisible(char const *label) {
+   return emit_visible(label, false);
+}
+
+void App::emit_visible(char const *label) { return emit_visible(label, true); }
+
+result<int> App::api_request_surface(char const *drawing_name) {
+   auto lid = this->layers.get_layer_id(std::string(drawing_name));
+   if (!lid) {
+      // XXX: to we need to put these applications on the App layer?
+      return Err<int>("Drawing name does not match any role");
+   }
+
+   auto rname = this->lookup_id(drawing_name);
+   if (!rname) {
+      // name does not exist yet, allocate surface id...
+      auto id = int(this->id_alloc.generate_id(drawing_name));
+      this->layers.add_surface(id, *lid);
+
+      // XXX: we set the main_surface[_name] here and now,
+      // not sure if we want this, but it worked so far.
+      if (!this->layers.main_surface_name.empty() &&
+          this->layers.main_surface_name == drawing_name) {
+         this->layers.main_surface = id;
+         logdebug("Set main_surface id to %u", id);
+      }
+
+      return Ok<int>(id);
+   }
+
+   // Check currently registered drawing names if it is already there.
+   return Err<int>("Surface already present");
+}
+
+void App::activate(int id) {
+   auto ip = this->controller->sprops.find(id);
+   if (ip != this->controller->sprops.end() && ip->second.visibility == 0) {
+      this->controller->surfaces[id]->set_visibility(1);
+      char const *label =
+         this->lookup_name(id).value_or("unknown-name").c_str();
+      this->emit_activated(label);
+      this->emit_visible(label);
+   }
+}
+
+void App::deactivate(int id) {
+   auto ip = this->controller->sprops.find(id);
+   if (ip != this->controller->sprops.end() && ip->second.visibility != 0) {
+      this->controller->surfaces[id]->set_visibility(0);
+      char const *label =
+         this->lookup_name(id).value_or("unknown-name").c_str();
+      this->emit_deactivated(label);
+      this->emit_invisible(label);
+   }
+}
+
+void App::deactivate_main_surface() {
+   this->layers.main_surface = -1;
+   this->api_deactivate_surface(this->layers.main_surface_name.c_str());
+}
+
+bool App::can_split(struct LayoutState const &state, int new_id) {
+   if (state.main != -1 && state.main != new_id) {
+      auto new_id_layer = this->layers.get_layer_id(new_id).value();
+      auto current_id_layer = this->layers.get_layer_id(state.main).value();
+
+      // surfaces are on separate layers, don't bother.
+      if (new_id_layer != current_id_layer) {
+         return false;
+}
+
+      std::string const &new_id_str = this->lookup_name(new_id).value();
+      std::string const &cur_id_str = this->lookup_name(state.main).value();
+
+      auto const &layer = this->layers.get_layer(new_id_layer);
+
+      logdebug("layer info name: %s", layer->name.c_str());
+
+      if (layer->layouts.empty()) {
+         return false;
+}
+
+      for (auto i = layer->layouts.cbegin(); i != layer->layouts.cend(); i++) {
+         logdebug("%d main_match '%s'", new_id_layer, i->main_match.c_str());
+         auto rem = std::regex(i->main_match);
+         if (std::regex_match(cur_id_str, rem)) {
+            // build the second one only if the first already matched
+            logdebug("%d sub_match '%s'", new_id_layer, i->sub_match.c_str());
+            auto res = std::regex(i->sub_match);
+            if (std::regex_match(new_id_str, res)) {
+               logdebug("layout matched!");
+               return true;
+}
+         }
+      }
+   }
+
+   return false;
+}
+
+void App::try_layout(struct LayoutState & /*state*/,
+                     struct LayoutState const &new_layout,
+                     std::function<void(LayoutState const &nl)> apply) {
+   if (this->policy.layout_is_valid(new_layout)) {
+      apply(new_layout);
+   }
+}
+
+//                  _             _ _            _                 _
+//   ___ ___  _ __ | |_ _ __ ___ | | | ___ _ __ | |__   ___   ___ | | _____
+//  / __/ _ \| '_ \| __| '__/ _ \| | |/ _ \ '__|| '_ \ / _ \ / _ \| |/ / __|
+// | (_| (_) | | | | |_| | | (_) | | |  __/ |   | | | | (_) | (_) |   <\__ \
+//  \___\___/|_| |_|\__|_|  \___/|_|_|\___|_|___|_| |_|\___/ \___/|_|\_\___/
+//                                         |_____|
+void controller_hooks::surface_created(uint32_t surface_id) {
+   this->app->surface_created(surface_id);
+}
+
+void controller_hooks::surface_removed(uint32_t surface_id) {
+   this->app->surface_removed(surface_id);
+}
+
+void controller_hooks::surface_visibility(uint32_t /*surface_id*/,
+                                          uint32_t /*v*/) {}
+
+void controller_hooks::surface_destination_rectangle(uint32_t /*surface_id*/,
+                                                     uint32_t /*x*/,
+                                                     uint32_t /*y*/,
+                                                     uint32_t /*w*/,
+                                                     uint32_t /*h*/) {}
+
+}  // namespace wm