| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <fuchsia/ui/policy/cpp/fidl.h> |
| #include <lib/async-loop/cpp/loop.h> |
| #include <lib/component/cpp/startup_context.h> |
| #include <lib/ui/base_view/cpp/view_provider_component.h> |
| #include <lib/ui/scenic/cpp/view_token_pair.h> |
| #include <src/lib/fxl/command_line.h> |
| #include <src/lib/fxl/log_settings_command_line.h> |
| #include <trace-provider/provider.h> |
| #include <zircon/status.h> |
| #include <zircon/types.h> |
| |
| #include <cstring> |
| #include <memory> |
| |
| #include "garnet/examples/ui/simplest_app/view.h" |
| |
| using namespace simplest_app; |
| |
| int main(int argc, const char** argv) { |
| constexpr char kProcessName[] = "simplest_app"; |
| zx::process::self()->set_property(ZX_PROP_NAME, kProcessName, |
| sizeof(kProcessName)); |
| |
| async::Loop loop(&kAsyncLoopConfigAttachToThread); |
| trace::TraceProvider trace_provider(loop.dispatcher()); |
| |
| auto command_line = fxl::CommandLineFromArgcArgv(argc, argv); |
| if (!fxl::SetLogSettingsFromCommandLine(command_line)) { |
| return 1; |
| } |
| |
| FXL_LOG(INFO) << "Using root presenter."; |
| FXL_LOG(INFO) << "To quit: Tap the background and hit the ESC key."; |
| |
| // We need to attach ourselves to a Presenter. To do this, we create a |
| // pair of tokens, and use one to create a View locally (which we attach |
| // the rest of our UI to), and one which we pass to a Presenter to create |
| // a ViewHolder to embed us. |
| // |
| // In the Peridot layer of Fuchsia, the device_runner both launches the |
| // device shell, and connects it to the root presenter. Here, we create |
| // two eventpair handles, one of which will be passed to the root presenter |
| // and the other to the View. |
| auto [view_token, view_holder_token] = scenic::ViewTokenPair::New(); |
| |
| // Create a startup context for ourselves and use it to connect to |
| // environment services. |
| std::unique_ptr<component::StartupContext> startup_context = |
| component::StartupContext::CreateFromStartupInfo(); |
| fuchsia::ui::scenic::ScenicPtr scenic = |
| startup_context |
| ->ConnectToEnvironmentService<fuchsia::ui::scenic::Scenic>(); |
| scenic.set_error_handler([&loop](zx_status_t status) { |
| FXL_LOG(ERROR) << "Lost connection to Scenic with error " |
| << zx_status_get_string(status) << "."; |
| loop.Quit(); |
| }); |
| |
| // Create a |SimplestAppView| view. |
| scenic::ViewContext view_context = { |
| .session_and_listener_request = |
| scenic::CreateScenicSessionPtrAndListenerRequest(scenic.get()), |
| .view_token = std::move(view_token), |
| .incoming_services = nullptr, |
| .outgoing_services = nullptr, |
| .startup_context = startup_context.get(), |
| }; |
| auto view = std::make_unique<SimplestAppView>(std::move(view_context), &loop); |
| |
| // Display the newly-created view using root_presenter. |
| fuchsia::ui::policy::PresenterPtr root_presenter = |
| startup_context |
| ->ConnectToEnvironmentService<fuchsia::ui::policy::Presenter>(); |
| root_presenter->PresentView(std::move(view_holder_token), nullptr); |
| |
| loop.Run(); |
| } |